ПРОКАТНАЯ КЛЕТЬ

Изобретение относится к прокатному производству. Задача изобретения - увеличение плоскостности полосы. В прокатной клети с рабочими валками, опирающимися непосредственно или через промежуточный валок на опорный валок, в частности имеющими возможность встречного осевого перемещения, оказывают воздействие на геометрию кромок валков прокатываемой полосы относительно точности профиля и плоскостности и уменьшают или предотвращают сжатие кромок полосы и заострение кромок, а также образование трещин на полосе благодаря тому, что по меньшей мере один валок по-разному изгибается по своей длине, в частности, выполнен на по меньшей мере отдельном участке вдоль бочки валка с более высокой характеристикой сплющиваемости. Концентрично оси выполнено конусное углубление определенной формы. Изобретение обеспечивает возможность воздействия на кромки полосы для выравнивания ее плоскостности. 8 ил.

ПРОКАТНАЯ КЛЕТЬ ДЛЯ ПРОКАТКИ ЛЕНТ

Изобретение относится к области прокатки металлов. Задача изобретения - упрощение воздействия на профиль и плоскостность кромки ленты. При прокатке лент различной ширины требуется приспосабливать бочкообразность рабочих валков, чтобы компенсировать воздействие промежуточных и опорных валков вблизи кромок ленты, так как рабочие валки вблизи этих кромок прогибаются. Рабочим, промежуточным и опорным валкам придается такой осевой сдвиг, что на кромках лент не проявляется утонение. В одном из торцов каждого рабочего валка и промежуточного валка выполнены кольцеобразные выемки. Верхний комплект валков развернут относительно нижнего на 180o. Осевые сдвиги рабочих и промежуточных валков производят на разное расстояние. Изобретение обеспечивает уменьшение смятия кромок ленты и их утонения. 2 с. и 1 з.п.ф-лы, 6 ил.

СИСТЕМА ДЛЯ ЗАМЕНЫ ПРОКАТНОГО ВАЛКА

Система для замены прокатного валка предназначена для усовершенствования процедуры контроля процесса прокатки на прокатном стане и повышения надежности технологического процесса прокатки. Устройство содержит систему для определения параметров, характеризующих идентичность и/или рабочее состояние прокатного заменяемого валка, который используется в клети прокатного стана, по меньшей мере, одно, размещенное на прокатном валке сенсорное устройство для запоминания параметров, которое выполнено с возможностью регистрации запоминаемого параметра идентичности заменяющего прокатного валка и устройство для считывания, выполненное с возможностью осуществления бесконтактного считывания уже зарегистрированных параметров из сенсорного устройства, при этом сенсорное устройство также выполнено с возможностью регистрации информации, касающейся параметра рабочего состояния прокатного валка и может эксплуатироваться при температуре прокатного валка, составляющей, по меньшей мере, 150°С, а также тележку, ...

ОПОРА ДЛЯ ВАЛКА ПРОКАТНОГО СТАНА

Изобретение относится к области прокатного производства. Опора (100) валка (10) с бочкой (25) валка и по меньшей мере одной шейкой (20) валка имеет подушку (60) валка с приемным отверстием для приема шейки (20) валка, причем внутренний диаметр приемного отверстия выполнен большим по сравнению с наружным диаметром шейки (20) валка с образованием между подушкой (60) валка и шейкой (20) валка кольцевого зазора(35) для приема смазочного средства (31), первый дроссельный элемент (70), который расположен без возможности проворота на обращенной к бочке валка торцевой стороне приемного отверстия подушки валка для уплотнения имеющегося там кольцевого зазора, и второй дроссельный элемент (71), который расположен без возможности проворота на удаленной от бочки валка торцевой стороне приемного отверстия подушки валка для уплотнения имеющегося там кольцевого зазора (35). Повышение гибкости настройки несущего усилия опоры валка обеспечивается за счет того, что первый и второй дроссельный элементы (70 ...

ВАЛКИ ПРОКАТНОГО СТАНА ДЛЯ ТЕХНОЛОГИЧЕСКОЙ ЛИНИИ ESP, ИМЕЮЩИЕ БОЛЬШОЙ РЕСУРС

Изобретение относится к области прокатки. Прокатная клеть, используемая на технологической линии ESP, имеет прокатные валки (3, 4), подшипниковый узел (2) и гидравлический цилиндр (1) сдвига валков. Возможность увеличения ресурса валков обеспечивается за счет того, что средняя часть поверхности валков (3, 4) выполнена вогнутой, один конец валков выполнен конической формы, с постепенным сужением в направлении к краю, в результате чего на поверхности валка возникает компенсационный наклон, и другой конец валков является цилиндрическим. Верхний валок (3) и нижний валок (4) имеют одинаковый профиль и ориентированы одинаковыми концами в противоположных направлениях. Способ включает компенсацию износа (Δr) верхнего валка (3) и нижнего валка (4), при этом верхний валок (3) сдвигают в первом направлении по горизонтали на расстояние, равное величине (s) сдвига валка, при помощи гидравлического цилиндра (1) сдвига валка, который соединен с верхним валком, а нижний валок (4) сдвигают во втором направлении ...

СПОСОБ КОМПЕНСАЦИИ АСИММЕТРИЧНОГО ПРОФИЛЯ ПЛАСТИНЫ СТАНА ДЛЯ ПРОКАТКИ

СИСТЕМА ДЛЯ ЗАМЕНЫ ПРОКАТНОГО ВАЛКА

... 1. Система (20) для замены прокатного валка, которая содержит систему (1) для определения параметров, характеризующих идентичность и/или рабочее состояние прокатного валка (21, 21') на промышленной установке, по меньшей мере, одно, размещенное на прокатном валке (В1, В2, В3, В4) сенсорное устройство (2, 2') для запоминания параметров, которое выполнено таким образом, что может регистрировать запоминаемый параметр идентичности прокатного валка (В1, В2, В3, В4), и устройство (3) для считывания, которое выполнено с возможностью осуществления бесконтактного считывания зарегистрированных параметров из сенсорного устройства (2, 2'), при этом сенсорное устройство (2, 2') выполнено также для регистрации параметра рабочего состояния прокатного валка (В1, В2, В3, В4), и может эксплуатироваться при температуре прокатного валка, составляющей, по меньшей мере, 150°С, а также тележку (22) смены валков, на которой может быть уложен прокатный валок (21, 21'), перемещаемый в клеть прокатного стана или выводимый ...

ВАЛОК АДАПТИВНОЙ ОРИЕНТАЦИИ

Изобретение относится к валку адаптивной ориентации. Валок содержит сердечник валка и бочку валка. Бочка валка включает в себя несколько секторных пластин, расположенных с интервалами вдоль окружного направления. Внутренняя стенка секторной пластины снабжена поворотной частью и двумя группами направляющих ограничительных механизмов. Поворотная часть соединена с сердечником валка с помощью шарнира, а ось шарнира перпендикулярна осевому направлению сердечника валка. Две группы направляющих ограничительных механизмов расположены по обеим сторонам поворотной части в осевом направлении сердечника валка. Направляющие ограничительные механизмы соединены с сердечником валка и используются для направления поворотного движения секторных пластин и ограничения поворота секторных пластин. В результате осуществляется автоматическое центрирование полосовой стали без внешнего вмешательства или датчиков контроля. 7 з.п. ф-лы, 2 ил.

Предварительно напряженный прокатный валок

Способ профилирования рабочих валков листопрокатной клети

Изобретение относится к прокатному производству, к профилированию рабочих валков чистовых клетей листовых станов. Целью изобретения является улучшение формы поперечного сечения листового проката и увеличение срока службы валков. Способ состоит в том, что величину вогнутости образующих бочек валков распределяют между валками в зависимости от диаметра валков и объема прокатываемого металла, причем вогнутость образующей валка с меньшей твердостью выполняют на участке 0,8-0,9 длины профилированного участка боч (Л ки -вллка с большей твердостью. 2 ил.

Узел валков для продольной прокатки сортовых профилей

Изобретение относится к прокатным клетям и может использоваться для продольной прокатки сортовых профилей , преимущественно круглого сечения . Цель изобретения - повышение качества поверхности готового профиля . При прокатке сортовых профилей охватывающие валок ограничительные элементы в виде торов 7 и 8 препятствуют образованию заусенцев в разъемах калибра 5. Торы могут охватывать либо один валок, либо различные. 1 з.п. ф-лы, 2 ил. (Л 8 00 :п D1 to . 1 ...

Рабочий валок листопрокатного стана

Изобретение относится к листопрокатному производству, конкретно к чистовым клетям широкополосных станов горячей прокатки. Цель изобретения - расширение сортамента прокатываемых полос по их ширине в течение одной кампании валков. Бочка 1 валка в средней части выполнена с вогнутой образуюшей с профилем на длине f, равной 0,5-0,8 длины бочки, в виде параболы. Концевые части бочки выполнены симметрично относительно указанной параболы в виде гиперболы. Обш.ая величина вогнутости образуюш,ей профиля лО/2 распределена между гиперболической и параболической кривыми в пределах 0,2-0,8. Рабочий валок обжимает в зависимости от ширины прокатываемой полосы вначале почти равномерно в зонах гиперболического профиля и параболического, затем но ходу прокатки от первой клети чистовой группы к последней доля обжатия на параболическом участке профиля возрастает, а гиперболическом уменьшается, а по величине вогнутости вначале доля гиперболического профиля незначительна, а затем максимальна по мере увеличения ...

Валок клети листопрокатного стана

Изобретение относится к листопрокатному производству и может быть использовано при производстве полос на широкополосных станах. Цель изобретения состоит В обеспечении повышения качества проката путем улучшения планшетности полосы. Это решается тем, что в валке клети листопрокатного стана, состоящем из шеек 2 и бочки 3 с переменной износостойкостью рабочей поверхности от торцов 3 к середине , по концам бочки, отстоящим на 0,05-0,15 длины бочки от края ее, выполнены симметрично расположенные относительно ее середины: профильные кольцевые проточки 4, заполненные наплавленным металлом с твердостью, большей твердости поверхности бочки, причем профиль образующей кольцевой проточки вьшолнен в виде сопряженных гиперболы с параболой так, что длина гиперболической части составляет 3-15 длин параболической, а глубина кольцевой проточки вьшолнена равной 0,02-0,002 диаметра .валка, при этом ширина кольцевой проточки составляет 0,1-0,3 длины бочки валка. Величина износа валков подстуженными кромками ...

Технологический инструмент для винтовой прокатки

Изобретение относится к прокатному производству и может быть использовано на прокатных станах для винтовой прокатки сплошных и полых изделий. Целью изобретения является повышение устойчивости процесса прокатки и срока службы валков. Технологический инструмент для винтовой прокатки содержит два валка 1 с износостойким элементом 2 на рабочей поверхности , расположенным по спирали с шагом, составляющим 0,03-0,15 от диаметра валка, и имеющим ширину, равную 0,5-0,9 шага спирали, при этом элементы на валках размещены с относительным смещением на величину, равную шагу, деленному на число валков . 2 ил., 1 табл. ел с ФигЛ ...

Обжимной калибр инструмента для продольной прокатки труб

Изобретение относится к трубопрокатному производству и может быть использовано при производстве труб на станах продольной прокатки труб. Цель изобретения - повышение качества труб. Обжимной калибр инструмента для продольной прокатки образован двумя валками с ручьями. Каждый из ручьев имеет центральную дугу с центром, лежащим на оси симметрии ручья и ниже плоскости разъема, и радиусные выпуски, плавно сопряженные с центральной дугой и выполненные радиусами, равными по величине радиусу центральной дуги. В предлагаемом обжимном калибре центры радиусных выпусков расположены на осях, составляющих с плоскостью разъема калибров, угол, определяемый из соотношения α = ARCCOS (2-B/H) где B - ширина калибра, H - высота калибра. Кроме того, сопряжения центральной дуги и радиусных выпусков выполнены радиусом, составляющим 0,5-0,9 радиуса чистового калибра. 1 з.п. ф-лы, 2 ил.

Вертикальный валок прокатной клети широкополосного стана

Изобретение относится к листопрокатному производству и может быть использовано в качестве вертикальных калиброванных валков в клетях черновой группы широкополосного стана горячей прокатки (ШСГП). Целью изобретения является повышение качества горячекатаных полос путем равномерной проработки боковых граней полок с учетом неравномерности температуры по толщине полос. Для этого в вертикальном валке широкополосного стана горячей прокатки, включающем бочку 1, по длине которой нарезан калибр CDEF, образованный сопряженными цилиндрическим участком DE и коническими выпусками CD и EF так, что выпуски ассиметричны между собой, угол Α1образующей верхнего конического участка выпуска по отношению к радиальной плоскости сечения валка, перпендикулярной продольной оси симметрии бочки валка, в 1,5-6 раз меньше угла Α2образующей нижнего конического участка выпуска так, что вместе между собой они составляют угол β=20-70°, а протяженность H1цилиндрического участка DE дна калибра составляет 0,45-0,95 максимальной ...

Вертикальный валок широкополосного стана горячей прокатки

Изобретение относится к прокатному производству. Цель изобретения - улучшение качества полос путем снижения дефектов на кромках раскатов. Сущность изобретения заключается в профилировке ручья с выпукло-вогнутым дном и симметричными выпусками с учетом условий прокатки накладываемых неравенством температур нижней широкой грани слябов по отношению к верхней широкой грани. Это условие приводит к растягивающим напряжениям и поперечным трещинам на кромках раскатов, а для его устранения предусматривается выполнение вогнутых участков дна по месту сопряжения с выпусками радиусами разной кривизны и глубиной этих участков ручья друг относительно друга. 1 з.п. ф-лы. 1 ил.

Прокатный валок

Изобретение относится к области прокатного, производства и может быть использовано в качестве рабочих валков на высокоскоростных листопрокатных станах. Цель изобрете- ния -повышение качества прокатьшаемых полос и снижение продольной разнотол- щинности путем создания условий вибрационной прокатки. Прокатный валок содержит бочку 1 с сегментной вставкой 2, установленной вдоль бочки со стороны ее торцовой поверхности, .причем длина вставки меньше длины бочки и вставка выполнена из материала плотностью, не равной плотности материала бочки. Предлагаемый валок может быть выполнен с четырьмя вставками, расположенными попарно симметрично относительно оси вращения валка и оси, перпендикулярной ей, причем вставки 2 расположены в направлении одной диагонали поперечного сечения валка и вьшолнены из материала одной плотности, а вставки 8, расположенные перпендикулярно в направлении другой диагонали поперечного сечения, выполнены из материала другой плотности. Эти Особенности конструкции при работе валка ...

Рабочий валок клети кварто широкополосного стана горячей прокатки,комплект рабочих валков клети кварто широкополосного стана горячей прокатки и способ калибровки комплектов рабочих валков клетей кварто чистовой группы широкополосных станов горячей прокатки

Изобретение относитс  к области прокатного производства и/может быть использовано в чистовых клет х непре-- рывных широкополосных станов гор чей прокатки. Цель изобретени  - повышение качества гор чекатаных полос путем снижени  их неплоскостности в виде коробоватости при последующей холодной прокатке. Рабочий валок дл  клети кварто имеет профилированную бочку, состо щую из трех участков: центрального с конической поверхностью прот женностью О,05...О,25 длины бочки и сопр женных с ним по обеим сторонам двух концевых в виде гиперболоидов. Этот рабочий валок может быть использован в паре с известным рабочим валком. Комплект рабочих валков клети кварто широкополосного стана гор чей прокатки состоит из нижнего и верхнего валков,, которые вьшолнены с идентичной профилировкой и имеют профиль внешней образующей указанного рабочего валка, причем в продольном сечении по длине бочек смежные конические поверхности образуют конус, равный 0,05...О,05%. Отмеченна  величина конусности компенсирует несимметричный тепловой профиль валков и непрерывньй, также несимметричный, износ рабочей поверхности бочек. Дальнейшее снижение неплоскостности можно получить, если в каждой последующей клети измен ть направление конусности центрального участка в комплекте валков на противоположное , т.е. валковый комплект каждой последующей клети разворачивают относительно предшествующей на 180° так, что вершины конусов межвалковых щелей в соседних клет х расположены на противоположных сторонах от оси прокатки. При использовании рабочего валка в паре с валком известной профилировки объем жести пониженных сортов составл ет 3,5%; при использовании предложенного комплекта валков снижение сортности прокатанного металла уменьшаетс  до 1,5%, а при использовании предлагаемой калибровки комплектов валков по ходу прокатки с ориентировкой на пр мой и обратный конус относительно направлени  прокатки обьем жести пониженных сортов уменьшаетс  до 0,5%. (f. С 4 К 4 ое ос х : The invention relates to the ...

Рабочий валок листопрокатного стана

РАБОЧИЙ ВАЛОК ЛИСТОПРОКАТНОГО СТАНА, содержащий бочку валка с вогнутым параболическим профилем, отличающийся тем, что, с целью улучшения формы поперечного сечения листов и полос, снижения расхода и сокращения времени на поДготовку валков, параболический профиль выполнен на среднем участке, равном 0,5-0;8 длины бочки валка с максимальной величиной вогнутости на середине бочки, определяемой по формуле W W(-tl-| , где W - величина вогнутости парабо-. лического исходного профиля на середине бочки рабочего валка при профилировании на среднем участке, мм; W - величина параболической б вогнутости на середине бочки рабочего валка при профилировании по: всей длине бочки , мм;, и - длина профилированного участка на середине бочки валка, мм; L - длина бочки валка, мм. СО ел ел ...

Вертикальный валок широкополосного стана горячей прокатки

Изобретение относится к области обработки металлов давлением и может быть использовано в листопрокатном производстве при профилировании вертикальных валков широкополосного стана горячей прокатки. Цель изобретения - уменьшение концевой и боковой обрези:полос. Вертикальный валок стана выполнен с кольцевым ручьем ящичного типа таким образом, что минимальная ширина ручья на дне калибра составляет 0,05-0,25 его максиг ;. мальной ширины, а профили боковых вьшусков описываются политропной кривой по зависимости. При обжатии вертикальными валками по проходам увеличивается угол наклона к горизонтали касательной бокового выпуска, что приводит к плавному изменению деформации на боковых кромках и снижению концевой обрези. 2 ил., 1 табл. с (Л С ...

Прокатный валок

ПРОКАТНЫЙ ВАЛОК, содержащий бочку с выпуклой образующей, отличающийся тем, что, с целью обеспечения центровки раската по оси валка и повышения производительности стана, вершина выпуклости бочки смещена относительно вертикальной оси валка на расстояние 0,2 - 0,25 длины бочки. СО VI 4 00 ...

Комплект листопрокатных валков

Изобретение относится к прокатному производству, в частности к производству листов и полос, и может быть осуществлено в прокатных цехах металлургических заводов. Целью изобретения является повышение стойкости валков и улучшение качества проката путем снижения поперечной разнотолщинности. В комплекте листопрокатных валков с односторонней конусностью их бочек конусность обоих валков обращена в сторону приводного края бочки, при этом разность диаметров по концам бочки валков составляет (0,23-0,93)10-4.D, где D - диаметр приводного края бочки, мм. Такой валковый комплект позволяет улучшить плоскостность полос и увеличить срок службы валков. 1 ил.

Прокатный валок

ПРОКАТНЫЙ ВАЛОК, содержащий бочку с выпуклой образующейj о т л ич а ю щ и и с я тем, что, с целью повьш1ения производительности стана за счет увеличения стойкости валка, образующая бочка выполнена несимметричной по длине валка, причем одна половина бочки - с цилиндрическим профилем , а другая - выпуклой криволинейной с уменьшением диаметра от середины к краю бочки на величину, .-4 Ч f ...

Устройство для обжатия слитков

ROLLER PROFILE BOTH FOR FORM PRICE INCREASE AND FOR FREEREGULAR ROLLING

LAGER UND DREHEINFÜHRUNG FÜR EINE GEKÜHLTE ROLLE

The invention relates to a bearing arrangement and a rotary inlet for a cooled roller. The aim of the invention is to provide a simple rotary inlet for a cooled roller while maintaining high reliability, such that firstly a seal element has only a small number of individual parts, and secondly a fast exchange of the seal element is possible. Said aim is achieved by means of a device of the type specified in the introduction, in which the coolant pipe (9) is connected to the roller body (4) via at least one sleeve-shaped sealing element (10) with an inner and an outer lateral surface (11,12), wherein the inner lateral surface (11) is sealingly connected to the stationary coolant pipe (9) and the outer lateral surface (12) is sealingly connected to the rotating roller body (4); and the sealing element (10) has at least one, preferably at least two static seal(s) (13) on the outer lateral surface (12) thereof, and has at least one, preferably at least two, dynamic seal(s) (14) on the inner ...

Verfahren zur Herstellung eines Blechprofils für eine Schubladen-Ausziehführung

Verfahren zur Herstellung eines, insbesondere aus Stahl bestehenden, Blechprofils (1, 32, 33, 37, 40) für eine Schubladen-Ausziehführung (2) mit zumindest einem von einerebenen Fläche (3, 43, 44, 45) des Blechprofils (1, 32, 33, 37, 40) seitlich, insbesondere senkrecht, abstehenden und sich in Längsrichtung (4) des Blechprofils (1, 32, 33, 37, 40)erstreckenden Steg (5, 35, 36, 38, 39, 41, 42), wobei in einem ersten Verfahrensschritt aus wenigstens einer ebenen Fläche (3, 43, 44, 45) eines Blechstrangs (6) zumindest einseitlich, insbesondere senkrecht, abstehender und sich in Längsrichtung (4) des Blechstrangs (6) erstreckender Steg (5, 35, 36, 38, 39, 41, 42) herausgequetscht wird, und der zumindest eine Steg (5, 35, 36, 38, 39, 41, 42) in wenigstens einem weiteren Verfahrensschritt, vorzugsweise in 10 bis 15 weiteren Verfahrensschritten, zusammengequetscht wird, d.h. in seiner Breite (7) reduziert und in seiner Höhe (8) vergrößert wird.

ROLLER AS WELL AS SPACER RING FOR IT

PROCEDURE FOR THE PRODUCTION OF SHEET METALS, IN PARTICULAR FROM HEAVY PLATES, AND MECHANISM TO DURCHFUHRUNG THE PROCEDURE

ARRANGEMENT TO TOLERANCE ARMS ROLLERS THE WORK MATERIAL FORMED BY STRANGFOERMIGEM.

DEVICE FOR THE COMPENSATION OF THE LENGTH VARIATIONS OF AT LEAST TWO WIRES OR STAFFS IN A DRAWING MECHANISM

PROCEDURE FOR THE PRODUCTION OF A HOT-ROLLED STEEL STRIP

PROCEDURE FOR THE PRODUCTION OF SHEET METALS, IN PARTICULAR FROM HEAVY PLATES, AND MECHANISM TO THE EXECUTION OF THE PROCEDURE

AVOIDANCE OF SELFEXCITED RATTERSCHWINGUNGEN IN ROLLING PLANTS

ROLL STAND FOR ROLLING VOLUMES

Rolling apparatus and method of making product of miscellaneous cross section with use of same

Roll stand for rolling strip

Roll arrangement for rolling strips

TWO-HIGH ROLLING STAND

ROLLED SURFACES HAVING A DULLED GLOSS FINISH

This application discloses cold rolled surfaces having a dulled gloss finish. The finish has a fairly uniform glossiness with a slightly matted appearance and with minimal directionality. The surfaces are prepared from work rolls having an Ra value of from 0.2 to 0.4 µm and an Rz value of less than 3.0 µm. Methods of preparing the surfaces are also described herein.

ROLLED SURFACES HAVING A DULLED GLOSS FINISH

This application discloses cold rolled surfaces having a dulled gloss finish. The finish has a fairly uniform glossiness with a slightly matted appearance and with minimal directionality. The surfaces are prepared from work rolls having an Ra value of from 0.2 to 0.4 µm and an Rz value of less than 3.0 µm. Methods of preparing the surfaces are also described herein.

Vorrichtung zum Verformen von stab- und drahtförmigem Material

Verfahren zum Schliessen von Hohlräumen in gegossenem Halbzeug

Mounting plate for a pressure sensor as well as measuring role with a pressure sensor.

Bei einer Halterung (1) für einen Drucksensor (2), der eine von oben auf ihn wirkende Druckkraft messen kann, ist ein erstes oberhalb der für den Drucksensor vorgesehenen Einbauposition angeordnetes Innenkeilelement (6) mit einer zu der Einbauposition des Drucksensors weisenden Innenfläche (7) vorgesehen. Weiter ein erstes Aussenkeilelement (13) mit einer zu der Einbauposition des Drucksensors (2) weisenden Innenfläche (14), mit der das Aussenkeilelement (13) auf der Aussenfläche (15) des ersten Innenkeilelements (6) aufliegt, ein zweites unterhalb der für den Drucksensor vorgesehenen Einbauposition angeordnetes Innenkeilelement (9) mit einer zu der Einbauposition des Drucksensors weisenden Innenfläche (10) und ein zweites Aussenkeilelement (16) mit einer zu der Einbauposition des Drucksensors weisenden Innenfläche (17), mit der das Aussenkeilelement (16) auf der Aussenfläche des zweiten Innenkeilelements (9) aufliegt. Es ergibt sich eine verbesserte Halterung, die es ermöglicht, den Sensor ...

COMPOUND ROLL

Roll for hot rolling

A roll for hot rolling

Centrifugally cast composite roll for hot rolling

Composite casting shaped roll and its preparation method

Improvements to the cylinders for shaping bars

Improvements relating to the cylinders and pinions of rolling mills

Forming cylinder for cardboard making , marking or embossing machine

La présente invention concerne un cylindre de façonnage massif comportant un noyau central cylindrique (1) et deux poupées axiales (3). Ce cylindre est caractérisé en ce que: chacune des faces de base (2) du noyau cylindrique (1) comporte, - soit une cavité axiale (5,5') la poupée (3) associée comportant un bossage axial (9) de forme complémentaire de la cavité axiale (5,5'), de façon que son flanc périphérique externe vienne en appui sur la totalité de la périphérie de la cavité (5, 5'), - soit un bossage axial (9) la poupée (3) associée étant creusée d'une cavité axiale (5,5') de forme complémentaire du bossage axial (9), de façon que le flanc périphérique interne de cette cavité (5,5') vienne en appui sur la totalité de la périphérie externe du bossage (9), la poupée (3) comportant une surface de contact (7a) adjacente à son bossage axial (9) ou à sa cavité (5,5'), qui est perpendiculaire à son axe longitudinal (uu'), cette surface de contact (7a) étant appliquée, par des moyens de maintien ...

armação de laminador para laminação de um material especialmente metálico

METHOD FOR MANUFACTURING T-SHAPED STEEL AND ROLLING EQUIPMENT

... [Problem] To provide a method for manufacturing T-shaped steel and provide rolling equipment that can manufacture T-shaped steel with different flange widths without changing rolls. [Solution] The present invention has: a rough rolling step that roughly forms a billet into a substantially T-shape; an intermediate rolling step that reduces the roughly formed T-shaped steel piece by a universal rolling machine and an edger rolling machine; and a finishing rolling step that rolls the T-shaped steel obtained from the intermediate rolling step to product dimensions. Letting the difference in reduction rate (rf-rw) be the difference between flange reduction rate (rf) and web reduction rate (rw) when the web and flange thicknesses are reduced by the universal rolling machine in the intermediate rolling step, at least one pass is carried out in which rolling in a range of difference in reduction rate of 5 - 15% is provided in the first half pass of the intermediate rolling step, and, in the first ...

METHOD AND DEVICE FOR APPLYING AN ADJUSTABLE TENSILE-STRESS DISTRIBUTION, IN PARTICULAR IN THE EDGE REGIONS OF COLD-ROLLED METAL STRIPS

The invention relates to a method and a device for applying an adjustable tensile-stress distribution, in particular in the edge regions during the cold-rolling of metal strips (16), in particular metal foil, in order to reduce the risk of an excessive build-up of tension and cracks at the edges of the strip, which can lead as a negative consequence to cracks in the strip and to a reduction in production, and in order to improve the surface of the strip and its planarity, even for a relatively high strip displacement speed, and also to reduce strip trimming widths. To achieve these aims, at least one or a combination of two of the following measures are implemented: a) separation of lubrication and cooling of the working rolls by lubricating on the run-in side and cooling on the discharge side, b) additional influencing of the strip edges using a hot edge spray", in particular by spraying (21) rolling oil with differing temperatures in zones, c) use of a special cross-sectional configuration ...

Support roller

A support roller, particularly for rolling mill systems or equipment for casting, conveying or straightening metal products, including a cylindrical roller axle, a hollow cylindrical outer ring arranged concentrically in relation to the roller axle, and a plurality of rolling bodies arranged between the roller axle and the outer ring. The roller axle further including a cavity, at least in certain sections between its central axis and a load introduction point. Due to the provision of the cavity the load rating and the service life of the support roller are increased.

LAMINATION PROCESS AND APPARATUS FOR ALKALI METALS OR ALLOYS THEREOF

An apparatus for and method of manufacturing lithium or lithium alloy anodes for electrochemical cells by a lamination process wherein a lithium or lithium alloy sheet is reduced into a thin lithium or lithium alloy film. The method and apparatus provide adjustments of the profile defined by the meeting surfaces of a pair of working rollers to compensate for thermal dilation of the working rollers or to compensate for irregular thickness of the lithium or lithium alloy sheet to control the shape and profile of the lithium or lithium alloy film being laminated.

Device to compensate the elongation of at least two wire rods or round bars, which is associated with a drawing assembly

Прокатный валок

Изобретение может быть использовано для получения прокатных валков для производства листовых изделий с заданными характеристиками шероховатости поверхности. На поверхности валка образован набор кратеров (K, Z), имеющих различные геометрические параметры и расположенных в соответствии со случайным распределением. Отдельные кратеры (K, Z) в указанном наборе частично перекрывают друг друга. Кратеры (K) имеют круглую форму, а кратеры (Z) имеют овальную форму. Кратеры могут быть получены с помощью импульсного лазерного луча путем изменения длительности его воздействия в пределах заданных интервалов времени с использованием лазера в режиме постоянной мощности. Прокатный валок имеет поверхность с широким диапазоном параметров шероховатости. 8 з.п. ф-лы, 12 ил.

СПОСОБ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКОГО ЛИСТА С ГРЕБНЯМИ, МЕТАЛЛИЧЕСКИЙ ЛИСТ С ГРЕБНЯМИ И КОНСТРУКТИВНЫЙ ЭЛЕМЕНТ

Изобретение относится к области изготовления и использования металлического листа. В способе изготовления металлического листа используется прокатный стан, включающий рабочую клеть, и изготавливается металлический лист, имеющий на каждой из верхней и нижней поверхностей множество гребней, проходящих в направлении прокатки. Способ содержит этап подготовки, этап установки и этап формования. На этапе подготовки подготавливают калиброванные валки, каждый из которых имеет на внешней периферийной поверхности множество ручьев. На этапе установки устанавливают калиброванные валки в рабочую клеть в качестве верхнего валка и нижнего валка, соответственно. На этапе формования прокатывают обрабатываемую деталь при помощи прокатного стана и превращают ее в металлический лист с гребнями, образованными в соответствии с ручьями калиброванных валков. Изобретение обеспечивает возможность улучшения качества изделия и снижение стоимости производства. 3 н. и 6 з.п. ф-лы, 22 ил., 1 табл.

Способ винтовой прокатки

Изобретение относится к винтовой прокатке сплошных заготовок. Осуществляют нагрев заготовок, деформацию имеющими обжимной и калибрующий участки валками, развернутыми на угол подачи и раскатки так, что оси валков по отношению к оси прокатки являются скрещивающимися прямыми. Угол скрещивания составляет 18-27°, а величина угла раскатки составляет не более 0,3 от угла скрещивания. Угол наклона образующей поверхности валка на обжимном участке составляет 0,23-0,65 от угла скрещивания, а перепад диаметров валка по длине не превышает 15%. В результате повышается качество и точность геометрических размеров проката при сокращении массы оборудования. 1 ил., 1 пр.

ПРОКАТНАЯ КЛЕТЬ С ПАРОЙ CVC-ВАЛКОВ

Изобретение относится к области прокатного производства, а именно к конфигурации валков прокатной клети. Задача изобретения - уменьшение осевого усилия на опоры валков. В прокатной клети с парой CVC-валков, преимущественно парой рабочих CVC-валков и парой опорных валков, имеющих зону (bcont) контакта, действует горизонтальный момент (М), приводящий к разводке валков и за счет этого к возникновению осевых усилий в опорах валков. Для того чтобы поддерживать минимальные осевые усилия в опорах валков, момент (М) уменьшают за счет выбора контура CVC-валков, определяемого полиномиальным выражением. CVC-контур при условии поддержания его оптимизированной клиновидности выполнен так, что касательная к концевому диаметру и выпуклому участку валка и касательная к другому концевому диаметру и вогнутому участку валка, проходят параллельно друг другу и наклонены относительно осей валков на оптимальный угол клина. Изобретение обеспечивает уменьшение моментов, действующих на опоры валков в горизонтальном ...

УЗЕЛ ПОДАЮЩЕГО ВАЛКА

... 1. Узел подающего валка и стриппер для прокатного стана, причем узел подающего валка и стриппер содержат по меньшей мере один подающий валок как с входной стороны, так и с выходной стороны относительно пары рабочих валков; и стриппер как с входной стороны, так и с выходной стороны относительно пары рабочих валков, где стриппер установлен на узле подающего валка; где каждый стриппер содержит наконечник стриппера; где стрипперы и подающие валки приспособлены для того, чтобы иметь регулируемое отделение по вертикали от одного из рабочих валков, согласно направлению движения материала через рабочие валки; отделение по вертикали по меньшей мере одного из стрипперов и подающих валков от одного из рабочих валков на одной из числа входной и выходной сторон отличается от отделения по вертикали другого из по меньшей мере одного из стрипперов и подающих валков от одного из рабочих валков на одной из числа входной и выходной сторон; и где каждый наконечник стриппера отделен от одного из рабочих валков ...

СОСТАВНОЙ ВАЛОК

ВАЛОК ДЛЯ ФОРМИРОВАНИЯ ТЕПЛОПЕРЕДАЮЩИХ ЭЛЕМЕНТОВ ТЕПЛООБМЕННИКОВ

... 1. Валок для формирования теплопередающих элементов теплообменников, содержащий:центральный вал, имножество элементов валка, каждый из которых образует внешнюю периферию, причем каждый элемент валка содержит геометрическую конфигурацию, выполненную на всей его внешней периферии, при этом множество элементов валка выполнено с возможностью укладки друг на друга на центральном валу,причем элементы валка, уложенные друг на друга на центральном валу, образуют валок с периферийной поверхностью, соответствующей геометрической конфигурации уложенных друг на друга элементов валка, для формирования теплопередающих элементов, соответствующих периферийной поверхности.2. Валок по п. 1, в котором каждый элемент валка содержит вырез, образующий внутреннюю периферию, противоположную внешней периферии, посредством которой каждый элемент валка уложен друг на друга на центральном валу.3. Валок по п. 2, дополнительно содержащий устройство зацепления, обеспечивающее возможность укладки множества элементов валка ...

СПОСОБ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКОГО ЛИСТА С ГРЕБНЯМИ, МЕТАЛЛИЧЕСКИЙ ЛИСТ С ГРЕБНЯМИ И КОНСТРУКТИВНЫЙ ЭЛЕМЕНТ

СПЛОШНОЙ РОЛИК ДЛЯ ОПРЕДЕЛЕНИЯ ОТКЛОНЕНИЙ ОТ ПЛОСКОСТНОСТИ

... 1. Сплошной ролик для определения отклонений от плоскостности при обработке полосового материала, в частности металлической полосы, содержащий расположенные в выемках датчики, отличающийся тем, что датчики (7) выполнены аксиально доступными. 2. Ролик по п.1, отличающийся тем, что датчики (7) расположены в параллельных оси ролика отверстиях (3). 3. Ролик по п.2, отличающийся тем, что параллельные оси ролика отверстия (3) проходят насквозь от одной торцевой стороны до другой. 4. Ролик по п.3, отличающийся тем, что параллельные оси ролика отверстия (3) имеют разную длину. 5. Ролик по п.1, отличающийся тем, что несколько датчиков (7) заклинены в отверстиях (3). 6. Ролик по п.2, отличающийся тем, что датчики (7) заклинены в отверстиях (3). 7. Ролик по п.6, отличающийся тем, что датчики (7) с плоскопараллельными поверхностями расположены между двумя удерживающими элементами (13,14). 8. Ролик по п.7, отличающийся тем, что плоскопараллельные поверхности датчиков (7) проходят параллельно оси ролика ...

КАЛИБР ТРЕХВАЛКОВОЙ КЛЕТИ ПРОКАТНОГО СТАНА

Изобретение относится к калибру трехвалковой клети прокатного стана. Калибр прокатного стана образован ручьями валков, профиль поперечного сечения каждого из которых образован расположенными симметрично относительно оси калибра, перпендикулярной оси вращения валка, центральной дугой, сопряженными с ней радиусными выпусками и дугами периферийных участков профиля поперечного сечения валка, сопряженными с соответствующими упомянутыми радиусными выпусками. Радиусные выпуски образованы касательными, соединенными с дугами периферийных участков профиля поперечного сечения валка, имеющих радиус, находящийся в пределах от 2 до 4 мм. Угол, соответствующий центральной дуге, α составляет от 67 до 69°. Зазор между соседними валками клети S равен от 1 до 2 мм. Проекция упомянутой касательной профиля поперечного сечения валка на продольную ось валка имеет длину Е, мм, определяемую по математическому выражению, приведенному в формуле изобретения. В результате обеспечивается минимизация выхода материала ...

Способ ремонта прокатных валков

Изобретение относится к прокатному оборудованию, в частности к ремонту прокатных валков. После съема изношенного бандажа 1 с оси, отработавшего заявленный ресурс по катающему диаметру d и по ширине бандажа h, производят изготовление бандажа из бандажа 1 на меньшие габариты, определяемые в зависимости: D1=D·K1 , h1=h·K2, d1=d K3, где D – посадочный диаметр бандажа 1, мм, D1 – переточенный посадочный диаметр бандажа, мм, h – ширина бандажа, мм, h1 – ширина переточенного бандажа, мм, d - катающий диаметр бандажа, мм, d1 - переточенный диаметра бандажа, мм. Разбандажирование валка, включающего нагревание бандажа до температуры 250-380°С, снятие его с оси, последующую сборку бандажа с осью другой клети, после чего производят расточку калибра на назначенный профиль валка. Изобретение позволяет увеличить срок службы составных прокатных валков с увеличением срока службы изношенных бандажей за счет переточки их с уменьшением габаритных размеров и установки по технологической цепочке в другую клеть ...

Вертикальный валок универсальной клети

ВЕРТИКАЛЬНЫЙ ВАЛОК УНИВЕРСАЛЬНОЙ КЛЕТИ с ручьями ящичного калибра с уменьшением диаметра по длине бочки, отличающийся тем, что, с целью, повышения производительности и точности проката по ширине путем исключения зинтообразования раската при прокатке, каждый ящичный калибр выполнен с уменьшением глубины и ширины к нижнему краю валка по длине бочки, причем- уменьшение глубины ящичных калибров составляет 0,028-0,006 радиуса бочки валка. (Л Ot) 00 ...

Валковый комплект

Изобретение относится к прокатному производству и предназначено для листовых и полосовых станов квар- то. Цель изобретения - повышение ресурса комплекта путем выравнивания износа по длине контактной поверхности валков. В процессе прокатки происходит износ валков преимущественно в центральной части бочки, что снижает качество проката и производительность стана из-за частых перевалок. При конической профилировке опорного валка 1 из-за разности его диаметров по длине бочки на краях по отношению к центру возникает разница в окружных скоростях и проскальзывание на краях бочки между опорным 1 и рабочим 2 валками. Это приводит к увеличению износа крайних участков бочек валков, и достигается выравнивание износа по длине бочки. От использования изобретения количество перевалок снижается на 300, в связи с чем повышается производительность, а за счет выравнивания износа по длине бочек noBFj- шается качество проката. 1 ил. (Л ...

Составной прокатный валок

СОСТАВНОЙ ПРОКАТНЫЙ ВАЛОК, содержащий приводную несущую ось с симметричными относительно вертикальной ее оси концевыми частями большего диаметра, чем центральной части, бандаж со ступенчатой посадочной поверхностью, у которой диаметр центральной части соответственно меньше концевых, -причем по обеим сторонам от вертикальной оси между концевыми частями оси и байдажа образованы кольцевые полости с установленными в «их телами кй чения, отличающийся тем, что, с целью улучшения rtnocкости полос путем обеспечения пере- менной жесткости с регулируемой величиной шага по диаметру концевых частей бандаЖа, в качестве тел качения установлены ролики с возможностью регулирования межшагового расстояния. 2. Валок по п.I, отличающийся тем, что, с целью изменеi ния межшагового-расстояния меаду роликами, несущая ось снабжена (Л приводом с регулируемым числом оборотов. . о 4j Ч СЛ hl rфиг . 1 ...

Комплект валков 20-валкового прокатного стана

Изобретение относится к прокат- ному производству, в частности к конструкциям комплектов валков для рабочих клетей 2и-валковых прокатных станов..Целью изобретения является повьшение качества проката за счет снижения его разнотолщинностн и не- плоскостности. На участке неприводных опорных промежуточных валков второго ряда комплектаi расположенном над основанием конуса конусных учасхков первых промежуточных валках, вшюл- нены кольцевые выемки, позволяющие компенсировать локальный прогиб рабочих валков на участке длины бочки, соответствующем зоне перехода от цилиндрической части бочки в коническую на первых промежуточных валках, что, в свою очередь, приводит к снижению локальной разнотолщинности и неплоскостности в этой зоне прока- тьшаемой полосы. 2 ил., I табл. i (Л ...

Валок прокатного стана

Узел валков прокатного стана

Способ изготовления ролика

Валковый узел клети кварто

ВАЛКОВЬЙ УЗЕЛ КЛЕТИ КВАРТО, содержащий опорные валки с выпуклой образуклчей бочки и рабочие валки с , вогнутой образукмчей бочки, отличающийся тем, что, с целью повышения устойчивости процесса прокатки и улучшения тем самым качества проката, образующая опорных валков выполнена в соответствии с уравнением л..«-ьз l - ...

Ящичный калибр для прокатки заготовок

Изобретение относится к прокатному производству и быть использовано при изготовлении ящичных калибров блюмингов, непрерывно-заготовочных и сортовых станов. Цель изобретения - повышение долговечности калибров и качества боковых поверхностей заготовок. Согласно изобретению ящичный калибр состоит из боковых стенок 1, дна вогнутой формы 2 и сопрягающих элементов 3, которые выполнены вогнутой формы со смещением максимума 4 вогнутости 5 относительно биссектрисы 6 угла между боковыми стенками и дном калибра в сторону боковых стенок. При этом величина смещения и стрела прогиба вогнутости определяются в зависимости от величины вогнутости дна калибра. Долговечность калибра и качество боковых поверхностей заготовок по- выщаются за счет расположения вогнутого элемента сопряжения у боковой стенки ка- ,дибпя 9. ил. (Л со ю со 00 ел со cfJue.i ...

Горизонтальный валок слябинга

Валок стана винтовой прокатки

Рабочий валок для прокатки полос и листов

Изобретение относится к прокатному производству и может быть использовано при производстве полос и листов на листопрокатных станах. Цель изобретения - увеличение выхода годного проката. На бочке рабочего валка симметрично вертикальной оси, делящей бочку на равные части, выполняется вогнутость, величина которой определяется по эмперической зависимости. Такое выполнение рабочего валка, обеспечивающего прокатку узких полос и листов, позволяет увеличить выход годного проката за счет сокращения боковой обрези на подкате для последующей холодной прокатки. 1 ил.

Walze, Walzring und Verfahren zur Herstellung einer solchen Walze

Querwalzmaschine

Bei einer Querwalzmaschine, umfassend zwei in einem Maschinenrahmen gelagerte, in gleicher Drehrichtung rotierende, gemeinsam angetriebene Walzen, die auf ihrem Umfang mit Werkzeuge bildenden Arbeitsflächen versehen sind, ist das Werkzeug als Halbschale ausgebildet und auf einem Werkzeugträger angeordnet, der mit einer in Richtung der Walzenlängsachse durchgängigen und an seiner von dem Werkzeug abgewandten Seite offenen Trägerausnehmung auf die Walzenachse aufstülpbar und mit dieser zu einer festen Walzeneinheit verbindbar ist.

Hülsenförmige Verbundwalze und Verfahren zu ihrer Herstellung

ROLL FOR ROLLING MILL

ROLLING OF METAL STRIP

Rolling Mills.

... 1,177,629. Rolling. DAVY & UNITED ENG. CO. Ltd. 26 May, 1967 [7 April, 1966], No. 15727/66. Heading B3M. The roll gap in a 4-high mill is determined either by lands 21 (Fig. 1) at the ends of the work rolls 12, 13 or by rollers 36 (Fig. 7) acting on the suitably profiled ends of the rolls. The rollers are horizontally movable within yokes in the housings, and are driven by the work rolls. A prestressing force P is applied to the bearings of the backing rolls 15, 16 to control the pressure between the contacting lands 21 or the profiled roll ends to thereby control the roll gap. A bending moment may be applied to the journals of the rolls 15, 16 to counteract bending of the work rolls under load. Gauge control of a strip 14 may be enhanced by the additional use of a screwdown controlled in response to measured strip thickness, or by controlling the strip tension. The end portions of the backing rolls may be supported in 180 degrees hydrodynamic or hydrostatic bearings. (For Figures see next ...

Rolling of metal strip

A rolling mill for rolling metal strip has a pair of work rolls 12 and a pair of back-up rolls 16. At least one of the work rolls is relieved at its ends so that its barrel length is not significantly longer than the width of the strip 13 to be rolled in the mill, and the work rolls are not in contact with each other outside the lateral edges of the strip being rolled, thereby ensuring that the strips is elongated equally across its width. ...

APPARATUS FOR SHAPING METAL BILLETS

... 1471833 Rolling mills EISENWERK GES MAXIMILIANSHUTTE mbH 8 May 1975 [21 May 1974] 19496/75 Heading B3M A metal billet 1 is tapered by grooved rolls 4 which are drawn along the billet, the path of the rolls being determined by adjustable guides 7. The billet is held fixed between the arms 11 of a fork on which the rolls 4 are freely rotatably mounted. The fork is moved by a ram 9 to draw the rolls over the billet to taper it according to the positions of the guides 7. Rollers 6, carried on the same axles as the rolls 4, contact the guides. Handwheels 16 and 21 enable the positions of the guides (and hence the billet taper) to be adjusted.

Role for Rollvorrichtungen for deforming staff and drahtförmigem, metallic or non-metallic material

LAMINATING PROCESS AND DEVICE FOR ALKALI METALS AND ALLOYS

TUNGSTEN CARBIDE COMPOUND ROLLER TO STRIP MILL ROLLERS

Составной валок

Составной валок, включающий полый вал и цилиндрическую обечайку, которые снабжены конструктивными элементами для охлаждения валка путем подачи и отвода теплоносителя, при этом рабочая поверхность валка выполнена в виде чередующихся выступов и впадин, продольных оси вращения валка, при этом наружная поверхность выступов выполнена плоской, боковые поверхности выступов также выполнены плоскими, причем каждый выступ выполнен из двух слоев, один из которых выполнен из низкоуглеродистой стали, а другой выполнен из износостойкого сплава, при этом слои, выполненные из износостойкого сплава, размещены со стороны наружных поверхностей выступов, впадины выполнены не плоскими с неравномерным (непериодическим) профилем поверхности, а ширина выступов выбрана из соотношения: где L - ширина выступов, - ширина впадин. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 187 172 U1 (51) МПК B21B 27/02 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B21B 27/02 (2006.01) (21)(22) Заявка: 2018114412, 19.04.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Общество с ограниченной ответственностью "НПО ВТОРМ" (RU) 22.02.2019 (56) Список документов, цитированных в отчете о поиске: RU 158778 U1, 20.01.2016. RU (45) Опубликовано: 22.02.2019 Бюл. № 6 1 8 7 1 7 2 R U (54) СОСТАВНОЙ ВАЛОК (57) Реферат: Составной валок, включающий полый вал и цилиндрическую обечайку, которые снабжены конструктивными элементами для охлаждения валка путем подачи и отвода теплоносителя, при этом рабочая поверхность валка выполнена в виде чередующихся выступов и впадин, продольных оси вращения валка, при этом наружная поверхность выступов выполнена плоской, боковые поверхности выступов также выполнены плоскими, причем каждый выступ выполнен из двух слоев, один из которых Стр.: 1 2211101 C2, 27.08.2003. RU 2006302 C1, 30.01.1994. US 4271575 A, 09.06.1981. выполнен из низкоуглеродистой стали, а другой выполнен из ...

Бандаж валка вертикальной валковой мельницы

Полезная модель относится к оборудованию для измельчения материалов и может быть использована для изготовления бандажей валков вертикальных валковых мельниц, предназначенных для обработки высокоабразивных материалов. Задачей полезной модели является повышение срока эксплуатации бандажа и возможность восстановления поверхности повторной наплавкой. Бандаж 1 выполнен из конструкционной стали. Рабочая поверхность основы бандажа покрыта слоем защиты от износа. Защитный слой нанесён полностью на всю рабочую поверхность и состоит из двух слоёв. Первый слой 2 из аустенитного наплавочного материала нанесён наплавкой непосредственно на поверхность основы бандажа. Второй, поверхностный слой 3, наплавлен на первый самозащитной порошковой проволокой. Технический результат заключается в равномерной защите от износа всей поверхности бандажа валка и за счёт этого в увеличении срока службы валка мельницы, без остановки оборудования на ремонт или замену бандажей и в возможности неоднократного восстановления изношенной поверхности бандажа путем повторной наплавки, 2 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 199 756 U1 (51) МПК B21B 27/02 (2006.01) B02C 4/30 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК B21B 27/02 (2020.02); B02C 4/30 (2020.02) (21)(22) Заявка: 2020104025, 30.01.2020 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Общество с ограниченной ответственностью «Техноинком» (RU) Дата регистрации: 18.09.2020 (45) Опубликовано: 18.09.2020 Бюл. № 26 1 9 9 7 5 6 R U (54) Бандаж валка вертикальной валковой мельницы (57) Реферат: Полезная модель относится к оборудованию для измельчения материалов и может быть использована для изготовления бандажей валков вертикальных валковых мельниц, предназначенных для обработки высокоабразивных материалов. Задачей полезной модели является повышение срока эксплуатации бандажа и возможность восстановления поверхности повторной наплавкой. Бандаж 1 ...

ROLL PRESS APPARATUS

A roll press apparatus performs press working on objects to be shaped and a sheet, on which the objects to be treated are disposed in a gap between first and second rolls that are disposed parallel to each other so as to face each other. Crown shapes of the first and second rolls include inclined areas that are inclined with respect to rotation axes of the first and second rolls. The roll press apparatus includes a roll moving unit that moves the first and second rolls in opposite directions along rotation axis directions of the first and second rolls.

METHOD FOR MANUFACTURING ROLL FOR REDUCING ROLLING, AND ROLL FOR REDUCING ROLLING

A method for manufacturing a roll for reducing rolling capable of suppressing the occurrence of fin flaws and edge flaws includes preparing a roll for reducing rolling for use on a three-roll type reducing-rolling mill. A ridge part () is formed in the adjacent portion between a caliber part and a flange part is rounded by cutting the ridge part () while rotating the roll for reducing rolling around the roll axis. In rounding the ridge part, in a ridge part region (RA) within the range of 3.0 mm in a roll axis direction with the top of the ridge part () being the center, the average of radiuses of curvature measured at a 0.5 mm pitch is made in the range of 2.5 to 3.0 mm, and the difference between the maximum value and the minimum value of the radiuses of curvature is made at most 1.0 mm. 1. A method for manufacturing a roll for reducing rolling , which roll is used on a three-roll type reducing-rolling mill for reducing-rolling steel pipes , and comprises a caliber part having a groove of an arched shape in transverse cross section and flange parts adjacent to the caliber part , comprising the steps of:preparing the roll for reducing rolling; androunding a ridge part formed in the adjacent portion between the caliber part and the flange part by cutting the ridge part while rotating the roll for reducing rolling around the roll axis, whereinin the step of rounding the ridge part,in a ridge part region within the range of 3.0 mm in a roll axis direction with the top of the ridge part being the center, the average of radiuses of curvature measured at a 0.5 mm pitch is made in the range of 2.5 to 3.0 mm, and the difference between the maximum value and the minimum value of the radiuses of curvature is made at most 1.0 mm.2. A roll for reducing rolling which is used on a three-roll type reducing-rolling mill for reducing-rolling steel pipes , comprising:a caliber part having a groove of an arched shape in transverse cross section; andflange parts adjacent to the ...

Variable thickness roll-formed blank and roll-forming system and method

A variable thickness roll forming system for forming a variable thickness blank including at least two sets of cylindrical shaped rollers. Each of the sets of rollers include: a first roller including a face which is linear where the first roller contacts the metal sheet; and a second roller including multiple shaping faces positioned about a perimeter and directed toward the face of the first roller. Each roller set incrementally alters a thickness of a metal sheet in a direction transverse to a metal sheet feed direction when the metal sheet is passed between the first and second rollers. The metal sheet after passing between the first and second rollers forms a roll formed blank having a first portion and a second portion positioned in the direction transverse to the feed direction with respect to the first portion, the first portion thicker than the second portion.

METHOD FOR PRODUCING H-SHAPED STEEL AND ROLLING APPARATUS

To efficiently and stably produce an H-shaped steel product with a flange width larger than a conventional flange width, and separately shape by the same roll H-shaped steels different in flange width in the H-shaped steel product with a large flange width. A rolling mill that performs a rough rolling step is engraved with a plurality of calibers configured to shape a material to be rolled, the number of the plurality of calibers being seven or more; the plurality of calibers include a plurality of wedging calibers as calibers at a previous stage provided with projections configured to create splits vertically with respect to a width direction of the material to be rolled, and a plurality of bending calibers as calibers at a subsequent stage configured to bend flange corresponding portions of the material to be rolled formed by the wedging calibers; the wedging calibers include calibers configured to create two kinds of splits different in length; the bending calibers include calibers having dimensions according to two kinds of flange corresponding portions different in length formed in the material to be rolled in the wedging calibers; and in the bending calibers, reduction is performed in a state where end surfaces of the material to be rolled are in contact with peripheral surfaces of the calibers in shaping in at least one pass or more. 1. A method for producing H-shaped steel , the method comprising:a rough rolling step;an intermediate rolling step; anda finish rolling step, wherein:a rolling mill that performs the rough rolling step is engraved with a plurality of calibers configured to shape a material to be rolled, the number of the plurality of calibers being seven or more;shaping in one or a plurality of passes is performed on the material to be rolled in the plurality of calibers;the plurality of calibers comprise a plurality of wedging calibers as calibers at a previous stage provided with projections configured to create splits vertically with respect ...

METHOD FOR THE MANUFACTURE OF MULTIMATERIAL ROLL AND THE MULTIMATERIAL ROLL

In the present there is presented a method to manufacture multimaterial rolls, comprising method to produce base material containing part of the roll, joining of special material containing part for that, hot working at least part of the length of the roll ingot containing base material and special material, —so that at least requested roll ingot length and diameter are achieved as well as final treatment of the roll ingot—to manufacture finished roll. This method enables manufacture of large rolls, for example having length more than 3 meters as one integrated component without welding or mechanical joint—so, that in the working surfaces of the rolls is used steel with high amount of alloying elements and carbide forming alloying elements. 1. Method for the manufacture of multimaterial rolls comprising following steps:Base material containing part of the roll ingot is produced based on the selected method so, that the base material is such ferrous material which contains other alloying elements than iron maximum 15 weight-%,Special material containing part is joined to the base material containing parts of the roll ingot, which is produced using a suitable method so that special material density is at least 90% of its theoretical density and it forms 5-40 volume-% of the total volume of base material and special materials, The length of the roll is longer than roll ingot length before hot working, and/or', 'The diameter of the roll is smaller than roll ingot diameter before hot working, and/or', 'Roll shaft diameter is smaller than base material diameter before hot working, and', 'Multimaterial special material layer thickness is at least 5 mm,, 'The base material and special material containing part of the roll ingot is hot worked at least for the part of the length of the roll ingot so, that following is reached after hot working;'}wherein, before hot working at least the special materials containing parts of the roll ingot is encapsulated by capsule using at ...

ROLL FOR HOT ROLLING

A roll for hot-rolling includes a body, wherein at least a part of an envelope surface of the body is made of a high speed steel that with reference to its chemical composition consists of the following elements, in weight %: 1-3 Carbon (C), 3-6 Chromium (Cr), 0-7 Molybdenum (Mo), 0-15 Tungsten (W), 3-14 Vanadium (V), 0-10 Cobalt (Co), 0-3 Niobium (Nb), 0-0.5 Nitrogen (N), 0.2-1 Yttrium (Y), and remainder iron (Fe) and unavoidable impurities. 1. A roll for hot-rolling comprising a body , wherein at least a part of an envelope surface of said body is made of a high speed steel that with reference to its chemical composition consists of the following elements , in weight %:1-3 Carbon (C)3-6 Chromium (Cr)0-7 Molybdenum (Mo)0-15 Tungsten (W)3-14 Vanadium (V)0-10 Cobalt (Co)0-3 Niobium (Nb)0-0.5 Nitrogen (N)0.2-1 Yttrium (Y), andremainder iron (Fe) and unavoidable impurities, wherein Mo+0.5W=2-10 weight %.2. A roll for hot-rolling according to claim 1 , wherein said body includes an axially extending core claim 1 , and an axially extending sleeve arranged radially outside said core.3. A roll for hot-rolling according to claim 2 , wherein said sleeve is made of said high speed steel.4. A roll for hot-rolling according to claim 2 , wherein said sleeve is made of a consolidation of a powder of said high speed steel claim 2 , which powder is subjected to elevated heat and elevated pressure causing consolidation.54. A roll for hot-rolling according to claim 2 , wherein said core is made of cast steel or cast iron or forged steel.6. A roll for hot-rolling according to to claim 2 , wherein a material of said sleeve has carbide particles that have a mean carbide particle size<3 μm.7. A roll for hot-rolling according to claim 2 , wherein the sleeve has an isotropic microstructure.8. A roll for hot-rolling according to claim 2 , wherein said sleeve is shrink fit on said core.9. A roll for hot-rolling according to claim 1 , wherein the yttrium (Y) content of said high speed steel ...

Roller tool for a machine tool, roller tool system, and method for the linear forming of a metal sheet

A roller tool for a machine tool for the linear forming of a metal sheet comprises a housing, a tool head which for reversibly interacting with a ram of the machine tool is mounted so as to be rotatable relative to the housing about a tool longitudinal axis, having an impact face for transmitting a contact pressure force that is oriented so as to be parallel to the tool longitudinal axis from the ram to the tool head, and a rotary engagement for transmitting a rotating movement about the tool longitudinal axis from the ram to the tool head, and a roller installation for interacting with the metal sheet, having at least one roller body that is capable of being rotatingly driven by way of the tool head. 2. The roller tool according to claim 1 , comprising at least one of the group comprising a bevel gear mechanism and a worm gear mechanism for transmitting the rotating movement between the tool head and the roller body.3. The roller tool according to claim 1 , comprising a spur gear mechanism for transmitting the rotating movement between the tool head and the roller body.4. The roller tool according to claim 1 , comprising at least two shafts which for transmitting the rotating movement between the tool head and the roller body are oriented so as to be perpendicular to the tool longitudinal axis and are disposed so as to be mutually spaced apart along the tool longitudinal axis.5. The roller tool according to claim 1 , comprising a safety clutch for limiting a maximum torque transmittable between the tool head and the roller body.6. The roller tool according to claim 5 , wherein a driving part of the safety clutch is connected directly to the tool head.7. The roller tool according to claim 1 , wherein the roller installation has a secondary roller body which for interacting with the metal sheet is mounted on a roller shaft that transmits the rotating movement so as to be rotatable relative to the roller body.8. The roller tool according to claim 7 , comprising a ...

CALCIUM-BEARING MAGNESIUM AND RARE EARTH ELEMENT ALLOY AND METHOD FOR MANUFACTURING THE SAME

A calcium-bearing magnesium and rare earth element alloy consists essentially of, in mass percent, zinc (Zn): 1-3%; aluminum (Al): 1-3%; calcium (Ca): 0.1-0.4%; gadolinium (Gd): 0.1-0.4%; yttrium (Y): 0-0.4%; manganese (Mn): 0-0.2%; and balance magnesium (Mg). 1. A magnesium alloy consisting essentially of:about 1 to about 3 percent by weight zinc;about 1 to about 3 percent by weight aluminum;about 0.1 to about 0.4 percent by weight calcium;about 0.1 to about 0.4 percent by weight gadolinium;zero to about 0.4 percent by weight yttrium;zero to about 0.2 percent by weight manganese; andbalance magnesium.2. The magnesium alloy of claim 1 , wherein said yttrium is present at a non-zero quantity.3. The magnesium alloy of claim 1 , wherein said manganese is present at a non-zero quantity.4. The magnesium alloy of wherein:said zinc is present at about 1 to about 2 percent by weight;said aluminum is present at about 1 to about 2 percent by weight;said calcium is present at about 0.1 to about 0.2 percent by weight;said gadolinium is present at about 0.1 to about 0.2 percent by weight;said yttrium is present at about 0 to about 0.2 percent by weight; andsaid manganese is present at about 0 to about 0.2 percent by weight.5. A sheet formed from the magnesium alloy of .6. A method for manufacturing the magnesium alloy of comprising:weighting raw materials to obtain a desired composition;charging said raw materials into a vacuum induction melting furnace to obtain a molten mass;casting said molten mass to yield a magnesium alloy ingot;solid solution treating said magnesium alloy ingot to yield a treated magnesium alloy ingot;hot rolling said treated magnesium alloy ingot to yield a rolled material;cutting defects from said rolled material to obtain an alloy sheet; andannealing said alloy sheet.7. The method of claim 6 , wherein said raw materials comprise:a magnesium ingot of no less than 99.99 mass percent purity;an aluminum ingot of no less than 99.9 mass percent purity;a zinc ...

COMPENSATION METHOD FOR ASYMMETRIC PLATE PROFILE OF PLATE/STRIP ROLLING MILL

A compensation method of an asymmetric strip shape of a strip rolling mill, for compensating the asymmetric strip shape of a strip caused in a machining process of the strip rolling mill in the prior art. The compensation method is realized by generating a non-linear asymmetric no-load roll-shaped profile curve through polishing an upper working roll and a lower working roll of a rolling mill and forming a non-linear asymmetric no-load roll gap between a transmission side and a working side of the upper and lower working rolls. The strip rolling mill in the prior art refers to a presently commonly used two-roll rolling mill driven by the transmission side of the working roll, a four-roll rolling mill equipped with a support roll and a multi-roll rolling mill equipped with a middle roll. 16-. (canceled)7. A compensation method for an asymmetric plate profile of a plate/strip rolling mill for compensating an asymmetric profile of a plate/strip rolled in plate/strip rolling , characterized in that: the compensation method is achieved by a non-linear asymmetric no-load roll gap of a transmission side and an operation side between an upper work roll and a lower work roll; the asymmetric no-load roll gap is obtained by a non-linear asymmetric no-load roll contour profile curve corresponding to the upper work roll and the lower work roll; the non-linear asymmetric no-load roll contour profile curve includes a differentiated degree of asymmetry between the upper work roll and the lower work roll , and grinding only one of the upper work roll or the lower work roll of the rolling mill with non-linear asymmetric roll contour profile curve; the non-linear asymmetric no-load roll gap height curve formed between the upper and lower work rolls includes a three or higher order polynomial equation , wherein an axial coordinate of a roller is used as a variable of the polynomial equation , and a coefficient of a highest odd-ordered term is not zero , the polynomial equation is ...

CASTING PRODUCT REDUCTION APPARATUS

The present invention is a casting product reduction apparatus that applies reduction to a casting product drawn from a mold with a sufficient reduction force and thereby can surely decrease center segregation and porosity and suppress occurrence of internal cracks so as to manufacture a high-quality casting product and includes: a pair of casting product press rolls that hold and press the casting product therebetween; backup rolls that support the casting product press rolls; and a pair of frames arranged to face each other, wherein three or more sets of the casting product press roll and the backup roll are arranged in a casting product drawing direction on each of the frames, and wherein a reduction means that decreases and increases a distance between the frames is provided at two or more places on the pair of frames. 1. A casting product reduction apparatus for applying reduction to a casting product drawn from a mold , comprising:a pair of casting product press rolls that hold and press the casting product therebetween; backup rolls that support the casting product press rolls; and a pair of frames arranged to face each other,wherein three or more sets of the casting product press roll and the backup roll are arranged in a casting product drawing direction on each of the frames, andwherein a reduction means that decreases and increases a distance between the pair of frames is provided at two or more places on the pair of frames.2. The casting product reduction apparatus according to claim 1 ,wherein at least one of the casting product press rolls forming a pair across the casting product has a large-diameter portion projecting outward in a diameter direction at a middle portion in an axial direction.3. The casting product reduction apparatus according to claim 1 ,wherein the backup roll is divided into a plurality of parts in an axial direction of the casting product press roll.4. The casting product reduction apparatus according to claim 1 ,wherein the ...

Roller with Compound Angle Flange

An inner roller used for roll forming pipe elements has a flange extending radially from a body. The flange has a surface divided into annular surface portions. The surface portions have orientation angles measured relatively to the axis of rotation of the inner roller. The orientation angles of surface portions farther from the body have greater orientation angles than the surface portions nearer to the body to mitigate adverse frictional effects between the pipe element and the flange during roll forming. 1. A roller for roll forming pipe elements , said roller comprising:a body rotatable about an axis;a flange extending circumferentially about said body and projecting radially outwardly therefrom relative to said axis, said flange comprising a surface having at least a first surface portion oriented angularly with respect to said axis at a first orientation angle, and a second surface portion oriented angularly with respect to said axis at a second orientation angle.2. The roller according to claim 1 , wherein said body is substantially cylindrical in shape claim 1 , said axis being co-axial with a longitudinal axis thereof.3. The roller according to claim 1 , wherein said flange has a circular perimeter.4. The roller according to claim 1 , wherein said first and second surface portions are contiguous with one another.5. The roller according to claim 4 , wherein each of said first and second surface portions has an annular shape.6. The roller according to claim 1 , wherein said first surface portion has an annular shape.7. The roller according to claim 1 , where said second surface portion has an annular shape.8. The roller according to claim 1 , wherein said first surface portion is positioned closer to said body than said second surface portion.9. The roller according to claim 8 , wherein said first orientation angle is from about 91° to about 93°.10. The roller according to claim 8 , wherein said first orientation angle is about 92°.11. The roller according to ...

Roller For Roll Forming

A roller for engaging an outer surface of a pipe element during roll forming has a perimeter region defined by three faces. A channel is positioned in one of the faces. The channel extends circumferentially around the perimeter region and provides a void space that reduces the contact area between the face and the side surface of a circumferential groove formed in the pipe element during roll forming. The reduced contact area reduces frictional heating of the pipe and roller as well as the tendency of the roller to slip relative to the floor surface of the groove due to axial force engendered when an asymmetrical groove is formed. 1. A roller for roll forming pipe elements , said roller comprising:a body having an axis of rotation and a perimeter region positioned radially distal to and surrounding said axis, said perimeter region comprising:a first face oriented transversely to said axis;a second face, contiguous with said first face;a third face, contiguous with said second face and oriented transversely to said axis;a channel positioned in said third face and extending around said perimeter region.2. The roller according to claim 1 , wherein said body has a cylindrical cross section.3. The roller according to claim 2 , wherein said axis of rotation is coaxial with said cylindrical cross section.4. The roller according to claim 1 , wherein said first face is angularly oriented with respect to said axis.5. The roller according to claim 4 , wherein said third face is oriented substantially perpendicularly to said axis.6. The roller according to claim 3 , wherein said second face is oriented substantially parallel to said axis.7. The roller according to claim 1 , wherein said first face is angularly oriented with respect to said axis.8. The roller according to claim 7 , wherein said first face has an orientation angle from about 30° to about 70° with respect to said axis.9. The roller according to claim 7 , wherein said first face has an orientation angle of about 50 ...

ROLLING MILL ROLL

A rolling mill roll according to the present invention includes: a shaft member which rotates around an axial line; a rolling ring which is fitted to an outer circumferential surface of the shaft member; a support portion which is provided on the outer circumferential surface of the shaft member; an interposed ring which is fitted to the outer circumferential surface of the shaft member and is provided on the other side of the rolling ring in the axial line direction; a pressing nut which is screwed onto the outer circumferential surface of the shaft member and is disposed to be adjacent to the other side of the interposed ring; a screw hole which is formed to penetrate the pressing nut in the axial line direction; and a screw shaft which is screwed into the screw hole and which is capable of pressing the interposed ring toward the one side in the axial line direction. 1. A rolling mill roll , comprising:a shaft member which rotates around an axial line;a rolling ring which is fitted to an outer circumferential surface of the shaft member;a support portion which is provided on the outer circumferential surface of the shaft member and restrains a movement of the rolling ring toward one side in an axial line direction, with respect to the shaft member;an interposed ring which is fitted to the outer circumferential surface of the shaft member and is provided on the other side of the rolling ring in the axial line direction;a pressing nut which is screwed onto the outer circumferential surface of the shaft member and is disposed to be adjacent to the other side of the interposed ring in the axial line direction;a screw hole which is formed to penetrate the pressing nut in the axial line direction; anda screw shaft which is screwed into the screw hole and which is capable of pressing the interposed ring toward the one side in the axial line direction,wherein at least a portion between the pressing nut and the interposed ring is sealed so as to restrain passage of a ...

METHOD FOR PRODUCING HOT-DIP GALVANIZED STEEL SHEET HAVING EXCELLENT PRESS FORMABILITY AND IMAGE CLARITY AFTER PAINTING, AND HOT-DIP GALVANIZED STEEL SHEET PRODUCED THEREBY

Provided is a hot-dip galvanized steel sheet used for an automobile outer panel and so forth and, more specifically, to a method for producing a hot-dip galvanized steel sheet having excellent press formability and clarity after painting, and to a hot-dip galvanized steel sheet produced by the method. 1. A method of manufacturing a hot-dip galvanized steel sheet having excellent press formability and image clarity after painting , comprising:manufacturing a hot-dip galvanized steel sheet by hot-dip zinc coating a matrix steel sheet; andcharging the hot-dip galvanized steel sheet in a skin-pass mill and skin-pass-rolling the hot-dip galvanized steel sheet,wherein the skin-pass-rolling uses a roll having roughness skewness (Rsk) of −0.2 or lower, average roughness (Ra) of 2 μm or less, excluding 0, and the number of peaks (RPc) in each unit length of 140 count/cm or higher.2. The method of claim 1 , wherein the skin-pass-rolled hot-dip galvanized steel sheet has roughness skewness (Rsk) of −0.33 or higher claim 1 , and an oil pocket area (V2) of 350 nmor greater.3. The method of claim 1 , wherein the skin-pass-rolled hot-dip galvanized steel sheet has surface long-wavelength waviness (Wsa1-5) of 0.35 μm or less claim 1 , excluding 0 claim 1 , and the number of peaks (RPc) in each unit length of 75 count/cm or higher after processing at a strain rate of 5%.4. A hot-dip galvanized steel sheet having excellent press formability and image clarity after painting claim 1 , comprising:a matrix steel sheet and a hot-dip galvanized layer formed on the matrix steel sheet,{'sup': '2', 'wherein the hot-dip galvanized steel sheet has roughness skewness (Rsk) or −0.33 or higher, and an oil pocket area (V2) of 350 nmor greater.'}5. The hot-dip galvanized steel sheet of claim 4 , wherein the hot-dip galvanized steel sheet has surface long-wavelength waviness (Wsa1-5) of 0.35 μm or less claim 4 , and the number of peaks (RPc) in each unit length of 75 count/cm or higher after ...

PLATE AND STRIP ROLLING PROCESS ORIENTED EFFICIENT AND STABLE CURRENT APPLYING MANIPULATOR AND METHOD THEREOF

A plate and strip rolling process oriented efficient and stable current applying manipulator is provided, which aims to effectively avoid potential safety hazards caused integral electrifying of the rack during normal current applying, can improve the defects that current loss is caused by a normal current applying way and the service life of the roller is shortened, and the difficulty in applying pulse current to plate strips while rolling plate strips with limited length dimensions at a higher temperature, and can realize stable loading of pulse current with limited dimension, and effectively act pulse current within a rolling region. 112131. A plate and strip rolling process oriented current applying manipulator , comprising: a rolling mill () , a first rack () arranged at a charge side of the rolling mill () , and a second rack () arranged at a discharge side of the rolling mill () ,{'b': ['4', '2', '3', '4'], '#text': 'wherein a plurality of ceramic rollers () for feeding are separately arranged on the first rack () and the second rack (), and pulse current applying assemblies are arranged at two sides of each of the ceramic rollers (); and'}{'b': ['4', '2', '1', '4'], '#text': 'wherein a material thickness detecting mechanism is arranged above the ceramic rollers () on the first rack (), and a pressing mechanism for flattening plates is arranged between the discharge side of the rolling mill () and the ceramic rollers ().'}25450155015. The plate and strip rolling process oriented current applying manipulator according to claim 1 , wherein the pulse current applying assembly comprises flexible baffle plates () which are symmetrically arranged above the ceramic rollers () claim 1 , rollers () are rotatably connected on opposite side surfaces of two of the flexible baffle plates () claim 1 , pulse power sources are externally connected to the rollers () claim 1 , and bottoms of the flexible baffle plates () are connected to aligning clamping parts. ...

COMPOSITE ROLLING MILL ROLL AND ROLLING METHOD

A composite rolling mill roll according to the present invention includes: a steel roll shaft; and an outer layer provided around the roll shaft, in which the outer layer includes a sintered body including a base metal which is an iron alloy, a fibrous inclusion which consists of a ceramic and has an average diameter of 1 to 30 μm and an average aspect ratio of 10 to 500, and a particulate inclusion which consists of a ceramic and has an average diameter of powder 1 to 100 μm, an amount of the fibrous inclusion is 5 to 40 volume % relative to the volume of the sintered body, and an amount of the particulate inclusion is 5 to 30 volume % relative to the volume of the sintered body. 1. A composite rolling mill roll comprising:a steel roll shaft; andan outer layer provided around the roll shaft, whereinthe outer layer includes a sintered body including a base metal which is an iron alloy, a fibrous inclusion which consists of a ceramic and has an average diameter of 1 to 30 μm and an average aspect ratio of 10 to 500, and a particulate inclusion which consists of a ceramic and has an average diameter of 1 to 100 μm,an amount of the fibrous inclusion is 5 to 40 volume % relative to a volume of the sintered body, andan amount of the particulate inclusion is 5 to 30 volume % relative to the volume of the sintered body.2. The composite rolling mill roll according to claim 1 , wherein a chemical composition of the base metal of the sintered body comprises:0.8 to 3.5 wt % of C;1 to 13 wt % of Cr;0 to 18 wt % of Mo;0 to 28 wt % of W;0 to 15 wt % of Ni;0 to 18 wt % of Co;2 to 20 wt % of one or more of elements in total, the elements being selected from a group consisting of V, Nb, Ti, Ta, Zr, and Hf; anda remainder including Fe and an impurity.3. The composite rolling mill roll according to claim 1 , whereinthe particulate inclusion and the fibrous inclusion are one or more of an oxide, a nitride, and a carbide.4. The composite rolling mill roll according to claim 3 , ...

METHOD FOR PRODUCING H-SHAPED STEEL

[Object] To enable an improvement in material-passing property and an improvement in dimensional accuracy in the following manner: when splits are created on end surfaces of a material (e.g., slab) by using projections with acute-angle tip shapes, and flange portions formed by the splits are sequentially bent in a plurality of calibers, a wedge-portion height of each caliber is set to a height satisfying a predetermined condition. 1. A method for producing H-shaped steel , the method comprising:a rough rolling step;an intermediate rolling step; anda finish rolling step,wherein a slab material whose slab width/slab thickness is equal to or more than 6.0 and equal to or less than 7.7 is used as a material to be rolled,in a rolling mill that performs the rough rolling step, a plurality of calibers to shape the material to be rolled are engraved, the number of the plurality of calibers being four or more,shaping of one or a plurality of passes is performed on the material to be rolled in the plurality of calibers,in a first caliber and a second caliber among the plurality of calibers, projections to create splits vertically with respect to a width direction of the material to be rolled are formed, andthe projections formed in the first caliber are designed to have a height of 100 mm or more, and the projections formed in the first caliber and the second caliber have a tip angle of 40° or less.2. The method for producing H-shaped steel according to claim 1 , wherein the slab material has a slab width of 1800 mm or more and a slab thickness of 300 mm or more at a start of shaping in the first caliber.3. The method for producing H-shaped steel according to claim 1 , wherein the slab material has a slab width of 1200 mm or more and a slab thickness of 250 mm or more at a start of shaping in the first caliber.4. The method for producing H-shaped steel according to claim 1 , wherein the projections formed in the first caliber and the second caliber have a tip angle of equal ...

ROLLED PIPE THREAD PROCESSING METHOD, ROLLING HEAD, APPARATUS, MODULE, PRODUCTION LINE, AND PRODUCT THEREOF

Provided is a method for performing an external pipe thread process on a hollow blank by at least twice rolling: firstly, the first rolling wheel group rolls the outer surface of the hollow blank into a threaded cylindrical surface or a threaded conical surface or a threaded cylindrical conical mixing surface, and secondly, the second rolling wheel group rolls again for the outer surface of the hollow blank which has processed in step 1, and rolling to form an external pipe thread; wherein the number of rolling wheels in a rolling wheel group, used in any two back-to-back rolling processes in a processing sequence, are different in parity. Further provided are various rolling head, module, apparatuses and production line for pipe thread, achieving the above processing method and having a simple structure, portability and practicality. When preforming an external pipe thread rolling process of the hollow blank, thereby improving a processing yield; in addition, the invention also provides a threaded cylindrical surface or a threaded conical surface or threaded cylindrical conical mixing surface products by the first rolling wheel group. 1. A method for rolling an external pipe thread , comprising rolling a hollow blank by a first rolling wheel group and a second rolling wheel group sequentially , wherein the first rolling wheel group comprises at least three circumferentially arranged first rolling wheels , and the second rolling wheel group comprises at least two circumferentially arranged second rolling wheels , the outer surface of the first rolling wheels have pre-formed thread , and the outer surface of the second rolling wheels have external pipe thread forming portion , andthe method includes the following steps:step 1: the first rolling wheel group rolls the outer surface of the hollow blank into a threaded cylindrical surface, a threaded conical surface, or a threaded cylindrical conical mixing surface;step 2: the second rolling wheel group rolls the outer ...

Apparatus and Method for Producing a Peripheral Groove in an End Portion of a Metal Tube

The invention relates to an apparatus () for producing a peripheral groove () in an end portion () of a metal tube (), in particular a metal tube () which is to be coated on the inside, the groove () being set up for receiving tube connectors, having a first, rotationally driven roller (), a second, freely rotating roller (), the first roller () having a roughened or structured surface () relative to the second roller (), a pressing device () for producing a relative movement between the first and second roller (), between a first and a second position, the rollers () assuming a first spacing from one another in the first position, which first spacing permits an introduction of a wall of the tube between the rollers (), and assuming a smaller, second spacing from one another in the second position, which second spacing is smaller than a material thickness (M) of the wall of the tube. 1. An apparatus for producing a peripheral groove in an end portion of a metal tube which is to be coated on an inside of the metal tube , the peripheral groove being set up for receiving tube connectors , the apparatus , comprising:a first, rotationally driven roller,a second, freely rotating roller, the first roller having a roughened or structured surface relative to the second roller, anda pressing device for producing a relative movement between the first and second roller, between a first and a second position, the rollers assuming a first spacing from one another in the first position, which first spacing permits an introduction of a wall of the metal tube between the rollers, and assuming a smaller, second spacing from one another in the second position, which second spacing is smaller than a material thickness of the wall of the metal tube,wherein the first, driven roller is set up to grip the metal tube from an outside of the metal tube in the second position and to rotate it such that a peripheral groove is pressed into the metal tube in the second position when the first ...

Compound roll

A compound roll includes a sintered inner core of a first cemented carbide and at least one sintered outer sleeve of a second cemented carbide disposed around the inner core. The outer sleeve and inner core each have a joining surface, wherein when the inner core and outer sleeve are assembled each joining surface contact to form a bonding interface therebetween. When the assembled, sintered inner core and outer sleeve are heated to a predetermined temperature the sintered inner core and outer sleeve are fused together at the bonding interface to form the unitary compound roll. To reduce the overall cost of the compound roll, a lower cost cemented carbide, or a cemented carbide with a lower density can be used for the inner core and fused to an outer sleeve of a virgin cemented carbide, thereby reducing the powder cost and/or reducing the overall mass of the compound roll.

CALCIUM-BEARING MAGNESIUM AND RARE EARTH ELEMENT ALLOY AND METHOD FOR MANUFACTURING THE SAME

A calcium-bearing magnesium and rare earth element alloy consists essentially of, in mass percent, zinc (Zn): 1-3%; aluminum (Al): 1-3%; calcium (Ca): 0.1-0.4%; gadolinium (Gd): 0.1-0.4%; yttrium (Y): 0-0.4%; manganese (Mn): 0-0.2%; and balance magnesium (Mg). 1. A magnesium alloy consisting essentially of:about 1 to about 3 percent by weight zinc;about 1 to about 3 percent by weight aluminum;about 0.1 to about 0.4 percent by weight calcium;about 0.1 to about 0.4 percent by weight gadolinium;zero to about 0.4 percent by weight yttrium;zero to about 0.2 percent by weight manganese; andbalance magnesium.2. The magnesium alloy of wherein the yttrium is present at a non-zero quantity.3. The magnesium alloy of wherein the manganese is present at a non-zero quantity.4. The magnesium alloy of wherein the yttrium is present at a non-zero quantity and the manganese is present at a non-zero quantity.5. The magnesium alloy of wherein the zinc is present at about 1 to about 2 percent by weight.6. The magnesium alloy of wherein the aluminum is present at about 1 to about 2 percent by weight.7. The magnesium alloy of wherein the calcium is present at about 0.1 to about 0.2 percent by weight.8. The magnesium alloy of wherein the gadolinium is present at about 0.1 to about 0.2 percent by weight.9. The magnesium alloy of wherein the yttrium is present at about 0 to about 0.2 percent by weight.10. The magnesium alloy of wherein the manganese is present at about 0 to about 0.2 percent by weight.11. The magnesium alloy of wherein:the zinc is present at about 1 to about 2 percent by weight;the aluminum is present at about 1 to about 2 percent by weight;the calcium is present at about 0.1 to about 0.2 percent by weight;the gadolinium is present at about 0.1 to about 0.2 percent by weight;the yttrium is present at about 0 to about 0.2 percent by weight; andthe manganese is present at about 0 to about 0.2 percent by weight.12. The magnesium alloy of in a form of a sheet.13. The magnesium ...

SEAMLESS SLEEVE AND SEAMLESS SUBSTRATE

A seamless, embossed or cast substrate is formed using a seamless sleeve having a seamless surface relief formed thereon and configured to slide over an cylindrical base in an embossing or casting assembly. The substrate is a flat web, foil, or film of, for example, paper, polyester, polypropylene, metal or other elongated flat material. The surface relief can be applied through interfering ablation, non-interfering ablation, ink jet printing, or other techniques wherein a seamless surface relief is formed onto the seamless sleeve. A method of making a seamless, embossed or cast substrate includes expanding a diameter of a seamless sleeve having a seamless surface relief formed thereon, sliding the expanded seamless sleeve onto a cylindrical base, allowing the diameter of the seamless sleeve to contract around the cylindrical base, and conveying a substrate through the embossing or casting assembly and embossing or casting the seamless surface relief into the substrate. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. A seamless sleeve for use with a cylindrical base in an embossing or casting assembly comprising:a seamless sleeve; anda seamless surface relief applied on an exterior surface of the seamless sleeve, the seamless sleeve configured to slide over the cylindrical base in the embossing or casting assembly.7. The seamless sleeve of wherein the surface relief is formed on an exterior surface of the seamless sleeve through interfering ablation claim 6 , non-interfering ablation claim 6 , micro-etching claim 6 , or ink jet printing.8. The seamless sleeve of wherein the seamless sleeve further includes a laser-ablatable surface.9. The seamless sleeve of wherein an exterior surface of the seamless sleeve is directly laser-ablatable.10. The seamless sleeve of wherein an exterior surface of the sleeve is coated with a laser ablatable coating.11. The seamless sleeve of wherein the laser ablatable coating is UV or EB curable.12. The seamless ...

METHOD FOR PRODUCING H-SHAPED STEEL

[Object] To suppress occurrence of shape defects in a material to be rolled and enable efficient and stable production of an H-shaped steel product with a flange width larger than a conventional flange width by creating deep splits on end surfaces of a material (e.g., slab) using projections with acute-angle tip shapes, and sequentially bending formed flange portions. 1. A method for producing H-shaped steel , the method comprising:a rough rolling step;an intermediate rolling step; anda finish rolling step,wherein in a rolling mill that performs the rough rolling step, a plurality of calibers to shape a material to be rolled are engraved, the number of the plurality of calibers being four or more,shaping of one or a plurality of passes is performed on the material to be rolled in the plurality of calibers,in a first caliber and a second caliber among the plurality of calibers, projections to create splits vertically with respect to a width direction of the material to be rolled are formed,in a second caliber and subsequent calibers among the plurality of calibers, reduction is performed in a state where end surfaces of the material to be rolled are in contact with caliber peripheral surfaces in shaping of at least one pass,in two or more of a third caliber and subsequent calibers among the plurality of calibers, a step of sequentially bending divided parts formed by the splits is performed, andthe projections formed in the first caliber and the second caliber have a tip angle of 40° or less.2. The method for producing H-shaped steel according to claim 1 , wherein the pass in which reduction is performed in a state where the end surfaces of the material to be rolled are in contact with the caliber peripheral surfaces is a final pass in shaping of a plurality of passes using each of the second caliber and subsequent calibers among the plurality of calibers.3. The method for producing H-shaped steel according to claim 1 , wherein in the second caliber claim 1 , ...

CENTRIFUGALLY CAST COMPOSITE ROLL FOR ROLLING AND METHOD OF MANUFACTURING THE SAME

There is provided a centrifugally cast composite roll for rolling having excellent wear resistance and surface deterioration resistance at levels of a high-speed steel cast iron roll and having rolling incident resistance at a level of a high alloy grain cast iron roll. Its outer layer includes chemical components by mass ratio: C: 1.5 to 3.5%; Si: 0.3 to 3.0%; Mn: 0.1 to 3.0%; Ni: 1.0 to 6.0%; Cr: 1.5 to 6.0%; Mo: 0.1 to 2.5%; V: 2.0 to 6.0%; Nb: 0.1 to 3.0%; B: 0.001 to 0.2%; N: 0.005 to 0.070%; and the balance being Fe and inevitable impurities, wherein: a chemical composition of the outer layer satisfies Formula (1) and has 5 to 30% of MC carbide by area ratio; an outer layer Shore hardness (A) of a roll surface satisfies Formula (2); and a residual stress (B) of the roll surface satisfies Formula (3), 1. A centrifugally cast composite roll for rolling having an outer layer ,the outer layer comprising chemical components by mass ratio:C: 1.5 to 3.5%;Si: 0.3 to 3.0%;Mn: 0.1 to 3.0%;Ni: 1.0 to 6.0%;Cr: 1.5 to 6.0%;Mo: 0.1 to 2.5%;V: 2.0 to 6.0%;Nb: 0.1 to 3.0%;B: 0.001 to 0.2%;N: 0.005 to 0.070%; andthe balance comprising Fe and inevitable impurities, wherein:{'sub': '3', 'a chemical composition of the outer layer satisfies following Formula (1) and has 5 to 30% of MC carbide by area ratio;'}an outer layer Shore hardness (A) of a roll surface satisfies following Formula (2); and [{'br': None, '2×Ni+0.5×Cr+Mo>10.0\u2003\u2003(1)'}, {'br': None, 'Hs75≤A≤Hs85\u2003\u2003(2)'}, {'br': None, '100 MPa≤B≤350 MPa\u2003\u2003(3).'}], 'a residual stress (B) of the roll surface satisfies following Formula (3),'}2. The centrifugally cast composite roll for rolling according to claim 1 , wherein Ti: 0.005 to 0.3%;', 'W: 0.01 to 2.0%;', 'Co: 0.01 to 2.0%; and', 'S: 0.3% or less., 'the outer layer further comprises one or more of chemical components by mass ratio3. A method of manufacturing the centrifugally cast composite roll for rolling according to claim 1 , whereinin a ...

ROLLER HEMMING DEVICE AND ROLLER HEMMING METHOD

A roller hemming device includes a large diameter roller having a large tapered surface and a small diameter roller having a small cylindrical surface. The small diameter roller is coaxially disposed with the large diameter roller. The small diameter roller and the large diameter roller enable to relatively move in an axial direction. The outer diameter of the small cylindrical surface is smaller than the minimum outer diameter of the large tapered surface. 1. A roller hemming device comprising:a large diameter roller which has a large tapered surface for performing a preliminary bending on a flange of a workpiece at a predetermined bending angle; anda small diameter roller which has a small cylindrical surface for performing a regular bending to fold the flange,wherein the small diameter roller is coaxially disposed with the large diameter roller,the small diameter roller and the large diameter roller enable to relatively move in an axial direction, andan outer diameter of the small cylindrical surface is smaller than a minimum outer diameter of the large tapered surface.2. The roller hemming device according to claim 1 ,wherein the small diameter roller protrudes from the large diameter roller through an axial pressing operation.3. The roller hemming device according to claim 1 ,wherein the large diameter roller has a large cylindrical surface which continuously extends from a rear end side of the large tapered surface, andthe small diameter roller has a small tapered surface which continuously extends from a front end side of the small cylindrical surface.4. A roller hemming method using a roller hemming device which includes a large diameter roller which has a large tapered surface and a small diameter roller which has a small cylindrical surface claim 1 , is coaxially disposed with the large diameter roller claim 1 , and enables to move relative to the large diameter roller in an axial direction claim 1 , the method comprising:a preliminary bending step in ...

Milling apparatus

A milling apparatus includes a plurality of milling roller units each including one milling roller that is made contact with, by pressing, one surface of one of a plurality of differently angled plate parts of an elongated metal milling material and another milling roller that is made contact with another surface of the plate part by pressing. At least one of the milling roller units mills a plate part different from a plate part milled by any other milling roller unit. A plurality of the milling roller units configured to mill an identical plate part are installed in a longitudinal direction of the plate part. The one milling roller and the other milling roller of at least one of the milling roller units are movable in axial directions thereof.

ROLLER LEVELER AND PLATE FLATTENING METHOD USING THE SAME

A roller leveler includes: a leveling roll unit having a plurality of leveling rolls configured to rotate so as to pass a plate while sandwiching and pressing the plate; a pushing cylinder provided at each of an entrance side and a discharge side of the leveling roll unit, at which the plate enters and is discharged, respectively, and configured to press the plate via the leveling rolls; and a driving mechanism configured to rotate the leveling rolls to pass the plate. At least one of the plurality of leveling rolls has a stepped structure, including a lateral center portion with a large diameter, corresponding to a center portion of the plate with respect to a plate width direction, and lateral end portions with a small diameter, corresponding to edge portions of the plate with respect to the plate width direction. 1. A roller leveler for flattening a plate by passing the plate through a pass line , the roller leveler comprising:a leveling roll unit including a plurality of leveling rolls arranged on upper and lower sides of the pass line in a staggered manner and configured to rotate so as to pass the plate while flattening the plate sandwiched therebetween;a pushing cylinder provided at each of an entrance side and a discharge side of the leveling roll unit, at which the plate enters and is discharged, respectively, and configured to press the plate via the leveling rolls; anda driving mechanism configured to rotate the leveling rolls to pass the plate,whereinat least one of the plurality of leveling rolls has a stepped structure, the at least one of the plurality of leveling rolls including a lateral center portion with a large diameter, corresponding to a center portion of the plate with respect to a plate width direction, and a lateral end portion with a small diameter, corresponding to an edge portion of the plate with respect to the plate width direction.2. The roller leveler according to claim 1 , whereinthe plurality of leveling rolls include a plurality ...

CENTRIFUGALLY CAST COMPOSITE ROLL FOR ROLLING AND ITS PRODUCTION METHOD

A centrifugally cast composite roll for rolling comprising an outer layer and an inner layer, which are integrally fused to each other, the outer layer being made of an Fe-based alloy comprising by mass 1.70-2.70% of C, 0.3-3% of Si, 0.1-3% of Mn, 1.1-3.0% of Ni, 4.0-10% of Cr, 2.0-7.5% of Mo, 3-6.0% of V, 0.1-2% of W, 0.2-2% of Nb, 0.01-0.2% of B, and 0.01-0.1% of N, the balance being Fe and inevitable impurities, and the inner layer being made of ductile cast iron. 1. A centrifugally cast composite roll for rolling comprising an outer layer and inner layer , which are integrally fused to each other;said outer layer being made of an Fe-based alloy comprising by mass 1.70-2.70% of C, 0.3-3% of Si, 0.1-3% of Mn, 1.1-3.0% of Ni, 4.0-10% of Cr, 2.0-7.5% of Mo, 3-6.0% of V, 0.1-2% of W, 0.2-2% of Nb, 0.01-0.2% of B, and 0.01-0.1% of N, the balance being Fe and inevitable impurities; andsaid inner layer being made of ductile cast iron.2. The centrifugally cast composite roll for rolling according to claim 1 , wherein said outer layer has circumferential residual compressive stress of 150-350 MPa at the discard diameter.3. The centrifugally cast composite roll for rolling according to claim 1 , wherein said outer layer has Shore hardness of 70-90 at the initial diameter.4. A method for producing a centrifugally cast composite roll for rolling comprising an outer layer and an inner layer claim 1 , which are integrally fused to each other claim 1 , said outer layer being made of an Fe-based alloy comprising by mass 1.70-2.70% of C claim 1 , 0.3-3% of Si claim 1 , 0.1-3% of Mn claim 1 , 1.1-3.0% of Ni claim 1 , 4.0-10% of Cr claim 1 , 2.0-7.5% of Mo claim 1 , 3-6.0% of V claim 1 , 0.1-2% of W claim 1 , 0.2-2% of Nb claim 1 , 0.01-0.2% of B claim 1 , and 0.01-0.1% of N claim 1 , the balance being Fe and inevitable impurities claim 1 , and said inner layer being made of ductile cast iron claim 1 , comprising the steps of centrifugally casting said outer layer in a rotating ...

Rolled copper foil for negative electrode current collector of secondary battery, negative electrode of secondary battery and secondary battery using the rolled copper, and method for manufacturing rolled copper foil for negative electrode current collector of secondary battery

The present invention is intended to provide a rolled copper foil for a secondary battery negative electrode current collector which can satisfactorily suppress rupture of the copper foil caused by stress generation or the like due to volume change of an active material. A rolled copper foil for a secondary battery negative electrode current collector, wherein a tensile strength in a direction parallel to the rolling direction is 600 MPa or more, and a breaking elongation in the direction parallel to the rolling direction is 2.0% or more; and wherein a tensile strength in a direction orthogonal to the rolling direction is 640 MPa or more, and a breaking elongation in the direction orthogonal to the rolling direction is 3.5% or more.

MANUFACTURING METHOD FOR EMBOSSING ROLL AND EMBOSSING ROLL

Provided are a manufacturing method for an embossing roll which is capable of being manufactured in a wide variety in small quantities and has uneven patterns formed uniformly and precisely without irregularities, and the embossing roll. The manufacturing method for the embossing roll comprises: a step of preparing a cylindrical base material; and a modeling step of modeling embossing onto a surface of the cylindrical base material with a three-dimensional printer based on three-dimensional processing data. It is preferred that the three-dimensional processing data is created by subjecting an embossing roll model to three-dimensional scanning. 1. A manufacturing method for an embossing roll , the manufacturing method comprising:preparing a cylindrical base material; andmodeling embossing onto a surface of the cylindrical base material with a three-dimensional printer based on three-dimensional processing data.2. A manufacturing method for an embossing roll according to claim 1 , wherein the three-dimensional processing data is created by subjecting an embossing roll model to three-dimensional scanning3. A manufacturing method for an embossing roll according to claim 1 , wherein the modeling embossing comprises sintering powder to be sintered laid on the surface of the cylindrical base material.4. A manufacturing method for an embossing roll according to claim 3 , wherein the sintering powder to be sintered is sintered with a laser.5. A manufacturing method for an embossing roll according to claim 1 , wherein the cylindrical base material and the modeling embossing onto the surface of the cylindrical base material are performed with a fully automatic laser plate-making system.6. An embossing roll claim 1 , which is manufactured by preparing a cylindrical base material and modeling embossing onto a surface of the cylindrical base material with a three-dimensional printer based on three-dimensional processing data.7. A manufacturing method for an embossing roll ...

ROLLING STAND FOR TUBES OR ROUNDS

A rolling stand for tubes or rounds comprising two or more rolls () defining a rolling section of the rolling stand that is coaxial to a rolling axis Y of the same stand, each roll having a respective rolling surface (S) defining a respective straight line of symmetry (B) passing through the rolling axis and through the center of symmetry of the respective surface, thus determining a first half and a second half of the respective surface, two gap zones having a radial distance of value H2 from the rolling axis and a groove bottom zone () having a radial distance of value H1 from the rolling axis at the intersecting point of the respective surface with the respective straight line of symmetry, characterized in that it provides, for each roll on said respective rolling surface, at least one first pushing zone () and at least one second pushing zone (). 1. A rolling stand for tubes or rounds comprising two or more rolling rolls defining a rolling section of the rolling stand that is coaxial to a rolling axis of the rolling stand , each roll havinga respective rolling surface defining a respective straight line of symmetry passing through the rolling axis and through a center of symmetry of the respective surface thus determining a first half and a second half of the respective surface,two gap zones having a radial distance of value H2 from the rolling axis, each gap zone being located at an adjacent roll,and a groove bottom zone having a radial distance of value H1 from the rolling axis at an intersecting point of the respective surface with the respective straight line of symmetry,wherein there are provided, for each roll on said respective rolling surface, at least three pushing zones, a first pushing zone of which is arranged on the respective straight line of symmetry at said groove bottom zone, a second pushing zone is circumferentially arranged in the first half of the respective surface between the respective groove bottom zone and the adjacent gap zone, at an ...

Exterior décor panel for home appliance and apparatus of manufacturing the same

An exterior decor panel for a home appliance includes a metal sheet having a first surface and a second surface opposite the first surface. The metal sheet includes a first patterned portion having successive recesses formed in the first surface, where each of the successive recesses have a prescribed depth, and a second patterned portion having successive protrusions formed at the second surface, where the successive protrusions correspond to the successive recesses. The successive recesses are formed by applying a force to the first surface, thereby transferring the force to the second surface to form the successive protrusions

ROLL ASSEMBLY FOR ROLLS IN A ROLLING MILL

To increase the load-carrying capacity or rolling capacity of a roll assembly in a rolling mill, throttle elements are used, which shut off the lateral flow of the lubricating film in a partial region between the roll neck and the bearing surface of the roll neck bearing assembly, thereby bringing about an increase in pressure in the lubricating film. At least one throttle element is embodied as an annular segment, forming an angular shut-off region for the lubricant in the annular gap. The invention makes it possible for existing installations to be easily retrofitted, without the need for structural modifications. In the case of new installations, the same load-carrying capacity as before can be provided while the dimensions of the installation space are reduced. The load-carrying capacity of the bearing assembly can be flexibly adjusted based on the dimensions of the shut-off region for the flow of lubricant. 1100. A roll assembly () for rolls in a rolling mill , comprising:{'b': 10', '25', '20, 'a roll () having a roll barrel () and at least one roll neck ();'}{'b': 60', '20', '20', '35', '31', '60', '20, 'a chock () having a receiving opening for receiving the roll neck (), wherein the inner diameter of the receiving opening is greater than the outer diameter of the roll neck () such that an annular gap () for receiving a lubricant () is formed between the chock () and the roll neck ();'}{'b': '70', 'a first throttle element (), which is disposed in a rotationally fixed manner on the roll barrel-side end face of the receiving opening of the chock for sealing the annular gap there; and'}{'b': 71', '35, 'a second throttle element (), which is disposed in a rotationally fixed manner on the end face of the receiving opening of the chock that is distant from the roll barrel, for sealing the annular gap () there;'}characterized in that{'b': 70', '71', '52', '31', '35', '52', '20', '60', '11', '10, 'the first and second throttle elements (, ) each form an angular shut ...

DEEP ROLLING TOOL FOR BLADE FATIGUE LIFE ENHANCEMENT

A device and methods are provided for deep rolling. In one embodiment, a deep rolling tool for applying compressive stress with rolling elements includes a fork having a base section and a plurality of fork arms, each fork arm extends outwardly from the base section and the fork arms are separated from one another to form an opening. The deep rolling tool may also include rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool. 1. A deep rolling tool for applying compressive stress , the deep rolling tool comprising:a first fork arm and a second fork arm each extending outwardly from a base section, wherein the first fork arm and the second fork arm are separated from one another to form an opening;a first rolling element rotatably secured to a distal end of the first fork arm;a second rolling element rotatably secured to a distal end of the second fork arm;wherein the first fork arm and the second fork arm are configured to locate the first rolling element and the second rolling element in a facing spaced relationship with respect to each other; andwherein the first rolling element and the second rolling element are configured to apply a compressive stress to an article received in the opening, wherein the first rolling element and the second rolling element each have a crowned roller, the crowned roller having a minor radius for contacting the article received by the rolling tool, and a major diameter adapted to provide a load capacity.2. The deep rolling tool of claim 1 , wherein the deep rolling tool is configured to apply residual stress to the article and the article is at least one of a turbine blade claim 1 , a compressor blade claim 1 , a fan blade claim 1 , a bladed disk claim 1 , a bladed element and a metal object.3. The deep rolling tool of claim 1 , wherein the compressive stress improves at least one of ...

DEEP ROLLING TOOL FOR BLADE FATIGUE LIFE ENHANCEMENT

A device and methods are provided for deep rolling. In one embodiment, a deep rolling tool for applying compressive stress with rolling elements includes a fork having a base section and a plurality of fork arms, each fork arm extends outwardly from the base section and the fork arms are separated from one another to form an opening. The deep rolling tool may also include rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool. 1. A deep rolling tool for applying compressive stress with rolling elements , the deep rolling tool comprising:a fork having a base section and a plurality of fork arms, wherein each fork arm extends outwardly from the base section and wherein the fork arms are separated from one another to form an opening; anda plurality of rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool.2. The deep rolling tool of claim 1 , wherein the fork provides a compressive force based claim 1 , at least in part claim 1 , on the flexural stiffness of the plurality of fork arms.3. The deep rolling tool of claim 1 , wherein each rolling element includes a crowned roller claim 1 , the crowned roller having a minor radius for contacting articles received by the rolling tool claim 1 , and a major diameter providing a load capacity.4. The deep rolling tool of claim 1 , wherein the deep rolling tool is configured to apply residual stress to at least one of a turbine blade claim 1 , compressor blade claim 1 , fan blade claim 1 , bladed disk claim 1 , bladed element and metal object in general.5. The deep rolling tool of claim 1 , wherein the compressive stress improves at least one of fatigue life of the article claim 1 , surface finish of the article and ...

MACHINE FOR DEEP ROLLING TOOL POSITIONING

A device and methods are provided for deep rolling. In one embodiment, a machine includes a deep rolling tool having a plurality of rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool. The machine may also include a positioning element coupled to the deep rolling tool, wherein the positioning element is configured to position the deep rolling tool and apply the deep rolling tool to an article. 1. A machine comprising:a deep rolling tool having a plurality of rolling elements, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool; anda positioning element coupled to the deep rolling tool, wherein the positioning element is configured to position the deep rolling tool and apply the deep rolling tool to an article.2. The machine of claim 1 , wherein the deep rolling tool includes a fork having a base section and a plurality of fork arms claim 1 , wherein each fork arm extends outwardly from the base section and wherein the fork arms are separated from one another to form an opening.3. The machine of claim 1 , wherein the machine is a 5-axis machine and the positioning element is configured to position the deep rolling tool in three dimensions claim 1 , and rotate the tool in two dimensions.4. The machine of claim 1 , wherein a block of the deep rolling tool is mounted to the positioning element claim 1 , and a fork is perpendicular to the positioning element.5. The machine of claim 1 , wherein the deep rolling tool may be rotated along a central axis of the rolling tool by the positioning element.6. The machine of claim 1 , wherein the positioning element is configured to move the rolling tool in an alternating motion from a retracted position to an extended position.7 ...

DEEP ROLLING TOOL WITH FORCE ADJUSTMENT

A device and methods are provided for deep rolling. In one embodiment, a deep rolling tool for applying compressive stress with rolling elements includes a flexible fork having a base section and a plurality of fork arms and a plurality of rolling elements, wherein each rolling element is mounted to a fork arm with eccentric roller bushings, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool. 1. A deep rolling tool for applying compressive stress with rolling elements , the deep rolling tool comprising:a flexible fork having a base section and a plurality of fork arms; anda plurality of rolling elements, wherein each rolling element is mounted to a fork arm with eccentric roller bushings, wherein each rolling element is mounted at the distal end of a fork arm, and wherein the rolling elements are configured to apply a compressive stress to articles received by the deep rolling tool.2. The deep rolling tool of claim 1 , wherein the flexible fork provides a compressive force based claim 1 , at least in part claim 1 , on the flexural stiffness of the plurality of fork arms and the position of the eccentric roller bushings.3. The deep rolling tool of claim 1 , wherein each rolling element includes a crowned roller claim 1 , the crowned roller having a minor radius for contacting articles received by the rolling tool claim 1 , and a major diameter providing a load capacity.4. The deep rolling tool of claim 1 , wherein the deep rolling tool is configured to apply residual stress to at least one of a turbine blade claim 1 , compressor blade claim 1 , fan blade claim 1 , bladed disk claim 1 , bladed element and metal object in general.5. The deep rolling tool of claim 1 , wherein the compressive stress improves at least one of fatigue life of the article claim 1 , surface finish of the article and aerodynamic performance of the ...

DEEP ROLLING TOOL FOR PROCESSING BLADE ROOT

A device and methods are provided for deep rolling. In one embodiment, a deep rolling tool includes a fork having a base section and a plurality of fork arms, wherein each fork arm extends outwardly from the base section and wherein the fork arms are separated from one another to form an opening. The deep rolling tool may also include a plurality of rolling elements configured to apply a compressive stress to articles received by the deep rolling tool, wherein each rolling element is mounted at the distal end of a fork arm, and wherein each rolling element includes a cantilever shaft retained by a fork arm and a crowned roller. 1. A deep rolling tool comprising:a fork having a base section and a plurality of fork arms, wherein each fork arm extends outwardly from the base section and wherein the fork arms are separated from one another to form an opening; anda plurality of rolling elements configured to apply a compressive stress to articles received by the deep rolling tool, wherein each rolling element is mounted at the distal end of a fork arm, and wherein each rolling element includes a cantilever shaft retained by a fork arm and a crowned roller.2. The deep rolling tool of claim 1 , wherein the each fork arm includes a mounting hole to receive and retain a cantilever shaft of each rolling element.3. The deep rolling tool of claim 1 , wherein each crowned roller includes a minor radius for contacting articles received by the rolling tool claim 1 , and a major diameter providing a load capacity.4. The deep rolling tool of claim 1 , wherein the diameter of each crowned roller is greater than the diameter of each cantilever shaft.5. The deep rolling tool of claim 1 , wherein the each crowned roller is mounted below the bottom surface of a distal end of a fork arm.6. The deep rolling tool of claim 1 , wherein the each crowned roller is angularly offset from a central axis of a fork arm.7. The deep rolling tool of claim 1 , wherein the deep rolling tool is configured ...

METHOD FOR MANUFACTURING STEEL PLATES

Provided is a method for manufacturing a steel plate that includes plastic working as preliminary processing before press working and is capable of keeping the press formability of the steel plate after the preliminary processing. A method for manufacturing a steel plate used for press working, and the method includes: preparing a steel plate containing C: 0.03 to 0.50 mass % and Mn: 2.0 to 20 mass % and having a ratio of residual austenite in a metallographic structure that is 20 to 50 volume %; and plastic working at least a part of the prepared steel plate while heating the steel plate at 50° C. or higher for preliminary processing before press working. 1. A method for manufacturing a steel plate used for press working , the method comprising:preparing a steel plate containing C: 0.03 to 0.50 mass % and Mn: 2.0 to 20 mass % and having a ratio of residual austenite in a metallographic structure that is 20 to 50 volume %; andplastic working at least a part of the prepared steel plate while heating the steel plate at 50° C. or higher for preliminary processing before press working.2. The method for manufacturing the steel plate according to claim 1 , wherein the plastic working for the preliminary processing rolls the prepared steel plate to have different plate thicknesses. The present application claims priority from Japanese patent application JP 2018-212680 filed on Nov. 13, 2018, the content of which is hereby incorporated by reference into this application.The present disclosure relates to a method for manufacturing a steel plate used for press working.Conventionally pressed components have been manufactured by press working of a blank, such as a steel plate. JP 2012-148305 A, for example, proposes a press-working method based on deformation-induced transformation to transform residual austenite into martensite during plastic working. This press-working method heats a steel material containing 5 volume % or more of residual austenite in the temperature range ...

SYSTEMS, METHODS AND DEVICES FOR 3D ROLLING OF MULTI-GAUGE PARTS

Disclosed are metalworking rollers for fabricating multi-gauge sheet metal parts, methods for making and methods for using such rollers, and rolling mill machines employing variable-radius metalworking rollers for fabricating multi-gauge metal components. A metalworking roller for a rolling mill machine is disclosed. The metalworking roller includes a cylindrical roller body that rotatably and drivingly connects to the rolling mill machine. An outer diameter surface spanning around the roller body circumference includes an outermost peak region and an innermost valley region recessed radially inward from the outermost peak region and elongated circumferentially around the roller body. During operation of the rolling mill machine, the outermost and innermost regions of the roller body's outer diameter surface sequentially press against and thereby modify the gauge of a metal workpiece. Each region has a respective transverse width and circumferential length extending across and around the longitudinal length and circumference, respectively, of the roller body. 1. A metalworking roller for a rolling mill machine operable to modify a gauge of a metal workpiece , the rolling mill machine including a drive mechanism and a roll stand , the metalworking roller comprising:a cylindrical roller body configured to rotatably attach to the roll stand and drivingly connect to the drive mechanism, the roller body including an outer diameter surface spanning continuously around the circumference of the roller body, the outer diameter surface including an outermost peak region and an innermost valley region recessed radially inward from the outermost peak region and elongated circumferentially around the roller body,wherein the outermost peak region and the innermost valley region are configured to sequentially press against and thereby modify the gauge of the metal workpiece.2. The metalworking roller of claim 1 , wherein the innermost valley region has a first transverse width ...

DEEP ROLLING TOOL AND METHOD

An embodiment of a tool assembly includes a robotic assembly, a tool mount, and a non-axisymmetric deep rolling tool. The robotic assembly includes a plurality of linear arms connected in series between a base end and a working end. Adjacent ones of the plurality of arms are connected via a corresponding plurality of multi-axis joints such that the working end is articulated by movement of one or more of the plurality of arms relative to one or more of the plurality of multi-axis joints. The tool mount is connected to one of the linear arms or one of the multi-axis joints at the working end of the robotic assembly. The non-axisymmetric deep rolling tool is connected to the tool mount, and includes a spring-loaded shaft assembly disposed along a first axis. A hub has an upper hub portion adjacent to the distal end of the spring-loaded shaft assembly aligned with the first axis, and a lower hub portion extending along a second axis, forming a nonzero angle relative to the first axis. A roller disk is joined to the lower portion of the hub and is rotatable about the second axis parallel to the second portion of the hub. 1. A tool assembly comprising:a robotic assembly including a plurality of linear arms connected in series between a base end and a working end, adjacent ones of the plurality of arms connected via a corresponding plurality of multi-axis joints such that the working end is articulated by movement of one or more of the plurality of arms relative to one or more of the plurality of multi-axis joints;a tool mount connected to an arm or a multi-axis joint at the working end of the robotic assembly; and a spring-loaded shaft assembly disposed along a first axis;', 'a hub connected to a distal end of the spring-loaded shaft assembly, the hub having an upper hub portion adjacent to the distal end of the spring-loaded shaft assembly aligned with the first axis, and a lower hub portion extending along a second axis, the second axis forming a nonzero angle relative ...

SHEET ROLL FORMING METHOD, AND RUNNING CUTTER AND ROUND BENDER APPLIED THERETO

A sheet roll forming method is disclosed. The sheet roll forming method includes an uncoiling step for uncoiling a coil by an uncoiler provided at a start of a process line, a straightening step for straightening the coil from the uncoiler to be a flat panel, a piercing step for forming holes for various purposes in the panel fed from the straightening step by a piercing press, a sheet roll forming step for cutting the panel to be a sheet with a predetermined dimension by a running cutter and for successively bending the cut sheet to be a shaped beam by a multi-stage roll forming unit, and a bending step for curvature forming the shaped beam to be a shaped product by a round bender. 1. A sheet roll forming method comprising:an uncoiling step for uncoiling a coil by an uncoiler provided at a start of a process line;a straightening step for straightening the coil from the uncoiler to be a flat panel;a piercing step for forming holes for various purposes in the panel fed from the straightening step by a piercing press;a sheet roll forming step for cutting the panel to be a sheet with a predetermined dimension by a running cutter and for successively bending the cut sheet to be a shaped beam by a multi-stage roll forming unit; anda bending step for curvature forming the shaped beam to be a shaped product by a round bender.2. The sheet roll forming method of claim 1 , wherein the sheet roll forming step comprises:a feeding step for supplying the pierced panel to the next step by roll feeders after the piercing step;a blanking step for cutting the panel with a predetermined dimension to be the sheet after the feeding step by the running cutter operating synchronized with feeding speed of the panel; anda rolling forming step for successively bending the sheet to be the shaped beam by the multi-stage roll forming unit after the blanking step.3. The sheet roll forming method of claim 2 , wherein the shaped product has a predetermined curvature claim 2 , a predetermined ...

ROLL FORMING DEVICE

A first roll () and a second roll () of a roll forming device are provided with a plurality of stacked cutting blades () and retainers (). The retainers () pass through the stacked cutting blades () and receive a first rotating shaft () and a second rotating shaft (). Projections () are formed on end portions of the retainers (). When the cutting blades () are stacked, the projections () control positioning operation of the cutting blades (). With this constitution, when the cutting blades () are joined in a stacked state to the retainers (), the cutting blades () in the stacking direction is controlled with the retainers (). 1. A roll forming device comprising a plurality of stacked cutting blades , wherein the roll forming device roll-forms a workpiece by rotating a pair of rolls each attached to corresponding one of a pair of rotary shafts , each of the rolls includesa corresponding number of the stacked cutting blades, anda retainer, which allows the corresponding rotary shaft to pass through and extends through the cutting blades, the retainer is one of a plurality of retainers adjacent to each other, and each of the retainers has at an end portion a controlling portion for controlling positioning of the cutting blades during stacking of the cutting blades.2. The roll forming device according to claim 1 , wherein the controlling portion functions as a preventing portion that prevents the cutting blades from coming off the retainer during stacking of the cutting blades.3. The roll forming device according to claim 2 , wherein the preventing portion is one of a plurality of preventing portions separated from each other.4. The roll forming device according to claim 3 , wherein each of the preventing portions is a projecting portion projecting from an end surface of the retainer.5. The roll forming device according to claim 4 , wherein each of the projecting portions is formed integrally with an end surface of a corresponding retainer and is received in a receiving ...

ROLL MOLDING DEVICE

In the present invention, when synchronization is lost due to backlash, and deviation between the rotational phases of a first processing roll and a second processing roll occurs, deviation between the rotational phases of dummy rotating bodies also occurs, and dummy blade parts of the dummy rotating bodies interfere with each other before blade parts of cutting blades of the first processing roll and the second processing roll () interfere with each other. Thus, interference between the blade parts is prevented. 1. A roll forming machine comprising:a pair of processing rolls arranged to face each other, the pair of processing rolls each including cutting parts formed on an outer circumferential portion such that the cutting parts mesh with each other to machine a sheet inserted between the processing rolls; andinterference preventing means including a pair of dummy rotating bodies arranged on rotary shahs of the pair of processing rolls, each dummy rotating body including dummy cutting parts the number of which is equal to the number of the cutting parts of each processing roll, wherein, when rotational phase deviation occurs between the processing rolls, the interference preventing means prevents interference between the cutting parts of the processing rolls based on rotational phase deviation that simultaneously occurs between the dummy rotating bodies.2. The roll forming machine according to claim 1 , wherein the interference preventing means sets a first clearance between the dummy cutting claim 1 , parts of the dummy rotating bodies to be smaller than a second clearance between the cutting parts of the processing rolls claim 1 , and when rotational phase deviation occurs claim 1 , the interference preventing means causes interference to occur between the dummy cutting parts of the dummy rotating bodies.3. The roll forming machine according to claim 2 , wherein the thickness of the dummy cutting parts is set greater than the thickness of the cutting parts.4. ...

ROLLED SURFACES HAVING A DULLED GLOSS FINISH

This application discloses cold rolled surfaces having a dulled gloss finish. The finish has a fairly uniform glossiness with a slightly matted appearance and with minimal directionality. The surfaces are prepared from work rolls having an Ra value of from 0.2 to 0.4 μm and an Rz value of less than 3.0 μm. Methods of preparing the surfaces are also described herein. 1. A work roll , comprising:a surface having an Ra value of from 0.2 to 0.4 μm and an Rz value of less than 3.0 μm.2. The work roll of claim 1 , wherein the surface has an Ra value of from 0.27 μm to 0.3 μm and an Rz value of less than 2.5 μm.3. The work roll of claim 1 , wherein the work roll is a cold mill work roll.4. A method of preparing a work roll for applying a dulled gloss finish on a metal substrate surface claim 1 , comprising:(a) roughening an unfinished work roll surface to form a roughened work roll surface, wherein the roughened work roll has an Ra of 0.20 μm or less and an Rz of 2.00 μm or less;(b) polishing the roughened work roll surface to form a polished work roll surface having an Ra of less than 0.015 μm and an Rz of less than 0.25 μm;(c) uniformly roughening the polished work roll surface to form a uniformly roughened work roll surface having an Ra of from 0.35 μm to 0.45 μm and an Rz of less than 5 μm; and(d) finishing the uniformly roughened work roll surface to form a work roll surface, wherein the work roll surface has an Ra value of from 0.2 to 0.4 μm and an Rz value of less than 3.0 μm.5. A work roll prepared according to the method of .6. A method of forming a dulled gloss finish on a metal substrate claim 4 , comprising:(a) roughening an unfinished work roll surface to form a roughened work roll surface, wherein the roughened work roll has an Ra of 0.20 μm or less and an Rz of 2.00 μm or less;(b) polishing the roughened work roll surface to form a polished work roll surface having an Ra of less than 0.015 μm and an Rz of less than 0.25 μm;(c) uniformly roughening the ...

CENTRIFUGALLY CAST COMPOSITE ROLL AND ITS PRODUCTION METHOD

A centrifugally cast composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer, the outer layer being made of an Fe-based alloy comprising by mass 1.3-3.7% of C, 0.3-3% of Si, 0.1-3% of Mn, 1-7% of Cr, 1-8% of Mo, at least one of 2.5-7% of V, 0.1-3% of Nb and 0.1-5% of W (V is indispensable), and 0.01-0.2% of B and/or 0.05-0.3% of S, the balance being substantially Fe and inevitable impurities, the outer layer having a structure containing no graphite; the inner layer comprising a core portion fused to the outer layer, and a drive-side shaft portion and a free-side shaft portion integrally extending from both ends of the core portion; the total amount of Cr, Mo, V, Nb and W being 0.35-2% by mass in an end portion of the drive-side shaft portion and 0.15-1.8% by mass in an end portion of the free-side shaft portion, the former being larger than the latter by 0.2% or more by mass. 1. A centrifugally cast composite roll comprising an outer layer formed by a centrifugal casting method , and an inner layer made of ductile cast iron and integrally fused to said outer layer;said outer layer being made of an Fe-based alloy comprising by mass 1.3-3.7% of C, 0.3-3% of Si, 0.1-3% of Mn, 1-7% of Cr, 1-8% of Mo, at least one element selected from the group consisting of 2.5-7% of V, 0.1-3% of Nb and 0.1-5% of W, V being indispensable, and 0.01-0.2% of B and/or 0.05-0.3% of S, the balance being substantially Fe and inevitable impurities, said outer layer having a structure containing no graphite;said inner layer comprising a core portion fused to said outer layer, and a drive-side shaft portion and a free-side shaft portion integrally extending from both ends of said core portion; andthe total amount of Cr, Mo, V, Nb and W in an end portion of said drive-side shaft portion being 0.35-2% by mass, and the total amount of Cr, Mo, V, Nb and W in an end portion of said free-side ...

CENTRIFUGALLY CAST, HOT-ROLLING COMPOSITE ROLL

A centrifugally cast, hot-rolling composite roll comprising an outer layer formed by a centrifugal casting method, and an inner layer made of ductile cast iron and integrally fused to the outer layer; the outer layer having a chemical composition comprising by mass 1-3% of C, 0.4-3% of Si, 0.3-3% of Mn, 1-5% of Ni, 2-7% of Cr, 3-8% of Mo, 3-7% of V, and 0.01-0.12% of B, the balance being Fe and inevitable impurities, and meeting the relation expressed by Cr/(Mo+0.5W)<−2/3┌C−0.2(V+1.19Nb)┐+11/6, wherein W=0, and Nb=0, when W and Nb are not contained; and containing by area 1-15% of MC carbide, 0.5-20% of carboboride, and 0.5-20% of Mo-based carbide. 2. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein said outer layer further comprises 3% or less by mass of Nb and/or 4% or less by mass of W.3. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein said outer layer further comprises 0.05-0.3% by mass of S.4. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein said outer layer further comprises 0.01-0.07% by mass of N.5. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein said outer layer further comprises by mass at least one selected from the group consisting of 5% or less of Co claim 1 , 0.5% or less of Zr claim 1 , 0.5% or less of Ti claim 1 , and 0.5% or less of Al.6. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein said outer layer meets the relation expressed by the following formula (2):{'br': None, '30.23+2.74×(area ratio of MC carbide)+4.01×(area ratio of Mo-based carbide)−5.63×(area ratio of carboboride)≦50 \u2003\u2003(2).'}7. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein said outer layer has Vickers hardness Hv of 500 or more.8. The centrifugally cast claim 1 , hot-rolling composite roll according to claim 1 , wherein ...

ROLLER MEMBER FOR USE IN AN APPARATUS FOR CLOSING PITTSBURGH SEAMS ASSOCIATED WITH DUCT ASSEMBLIES AND OTHER BOX-SHAPED MEMBERS

A vertical Pittsburgh Seam closing apparatus having a base supporting surface, a track mechanism for moving a carriage assembly which holds seam forming members used to close a Pittsburgh Seam, a pair of upper and lower guide members for guiding the duct section into a proper vertical position, and upper and lower clamping members positioned inside the duct section and adjacent the inside portion of the Pittsburgh Seam to be closed, the upper guide members and clamping member being selectively movable and adjustable for accommodating different duct section lengths. In one embodiment, the seam forming assembly includes three roller members mounted in vertical arrangement to each other, one roller member being V-shaped in configuration and the other two roller members being substantially cylindrical in shape. The V-shaped roller member may also include one or more projecting members for forming dimples in the closing process to prevent shifting and/or slipping of the closed seam. 1. A substantially V-shaped roller member for use in an apparatus for closing a Pittsburgh Seam associated with a duct section , the duct section having first and second end portions , the Pittsburgh Seam to be closed having a male portion , a female portion , and an overlapping edge portion , the substantially V-shaped roller member comprising:first and second side portions forming the V-shaped configuration of said roller member, said first and second side portions each having a surface portion for engaging the outside portion of the Pittsburgh Seam to be closed, said first and second side portions forming an apex at their joinder;at least one bore extending through at least a portion of one of said first and second side portions of said V-shaped roller member; andat least one projection member extending through said at least one bore, said at least one projection member having a portion thereof extending beyond at least one surface portion of said first and second side portions.2. The ...

Roll surface layer material for hot rolling with excellent fatigue resistance produced by centrifugal casting, and composite roll for hot rolling produced through centrifugal casting

There is provided a roll surface layer material including a roll surface layer with excellent fatigue resistance. The roll surface layer material has a composition including, on a mass % basis, C: 2.3% to 2.9%, Si: 0.2% to 0.8%, Mn: 0.2% to 1.0%, Cr: 5.0% to 7.5%, Mo: 4.4% to 6.5%, V: 5.3% to 7.0%, Nb: 0.6% to 1.5%, and Co: 0.1% to 4.0% so as to satisfy 14.0≦(Mo+1.7V)≦17.0 (where Mo represents a content (mass %) of Mo and V represents a content (mass %) of V) and further including Al: 0.001% to 0.03% and/or REM: 0.001% to 0.03%, wherein a carbide is contained at an area fraction of 13% to 40%. A composite roll obtained by integrally welding a shaft member to the roll surface layer member is treated as a centrifugal cast roll that includes a surface layer with excellent fatigue resistance.

Tubular structure reinforcing

Tubular structures, systems, and methods are generally directed to support structures having structural properties similar to thick-walled structures while being formed using materials having thickness amendable to rolling and welding and, thus, useful for rapid and cost-effective fabrication.

CENTRIFUGAL CAST CALIBER ROLL FOR HOT ROLLING MILL (AS AMENDED)

A centrifugal cast caliber roll for a hot rolling mill has excellent abrasion resistance, fatigue resistance, and slip resistance. The roll has a chemical composition containing, by mass %, C: 1.8% or more and 3.0% or less, Si: 0.2% or more and 1.0% or less, Mn: 0.2% or more and 1.5% or less, Cr: 5% or more and 9% or less, Mo: 4.0% or more and 7.0% or less, V: 4.0% or more and 7.0% or less, Nb: 0.5% or more and 2.0% or less, and the balance being Fe and inevitable impurities, in which the relationship 0.6≦(C−0.24V−0.13Nb)≦1.4 (where C, V, and Nb each denote the content (mass %) of the corresponding chemical element) is satisfied, and has a surface hardness of Hs 67 or higher and Hs 76 or lower in terms of shore hardness. 1. A centrifugal cast caliber roll for a hot rolling mill , {'br': None, '0.6≦(C−0.24V−0.13Nb)≦1.4\u2003\u2003(1),'}, 'the roll having a chemical composition containing, by mass %, C: 1.8% or more and 3.0% or less, Si: 0.2% or more and 1.0% or less, Mn: 0.2% or more and 1.5% or less, Cr: 5% or more and 9% or less, Mo: 4.0% or more and 7.0% or less, V: 4.0% or more and 7.0% or less, Nb: 0.5% or more and 2.0% or less, and the balance being Fe and inevitable impurities, in which relational expression (1) below is satisfied, and having a surface hardness of Hs 67 or higher and Hs 76 or lower in terms of Shore hardnesswherein C, V, and Nb each denote the content (mass %) of the corresponding chemical element.2. The centrifugal cast caliber roll for a hot rolling mill according to claim 1 , the roll being a rolling roll for a seamless steel pipe. This is the U.S. National Phase application of PCT/JP2015/003239, filed Jun. 26, 2015, and claims priority to Japanese Patent Application No. 2014-132083, filed Jun. 27, 2014, the disclosures of both applications being incorporated herein by reference in their entireties for all purposes.The present invention relates to a centrifugal cast roll for a hot rolling mill, in particular, to a roll having a caliber ...

TOOL CHANGEOVER SYSTEM AND METHOD AS WELL AS ROLL

To minimize the setup times in the case of a tool changeover on rolls, the movement sequences are separated into transverse movements and vertical movements using a tool changeover system and method for changeover of at least one tool disposed on a roll shaft in a working position. In one aspect, the tool changeover system includes a tool changeover rack, a vertical transport and a transverse transport. A drawing frame separate from the tool changeover rack can be transported transversely separately with reference to the tool changeover rack. The tool changeover rack has a device for connecting with the vertical transport and a tool accommodation for accommodating the tool. The drawing frame has a device for connecting with the transverse transport and a device for connecting with the tool. 1. A tool changeover system for changeover of at least one tool disposed on a roll shaft in a working position comprising:(a) a vertical transport;(b) a tool changeover rack comprising a device for connecting with the vertical transport and a tool accommodation for accommodating the at least one tool;(c) a transverse transport; and(d) a drawing frame separate from the tool changeover rack and separately transportable transversely with reference to the tool changeover rack, wherein the drawing frame comprises a device for connecting with the transverse transport and a device for connecting with the tool.2. A tool changeover system for changeover of at least one tool disposed on a roll shaft in a working position comprising:(a) a vertical transport;(b) a tool changeover rack;(c) a guide support; and(d) a changeover rack guide configured as a motion link guide between the tool changeover rack and the guide support, wherein the motion link guide comprises a guide track having an open top portion comprising a guide track opening, and wherein the guide track comprises a constant vertical track component guiding the tool changeover rack to the changeover position with reference to the ...

METHOD FOR PRODUCING HOT-ROLLED SEAMLESS PIPES HAVING THICKENED ENDS

A method for producing hot-rolled, seamless pipes having at least one wall thickening which can be arranged at any positions over the length of the pipe, wherein by means of a multiple-stand mandrel bar rolling mill, the rolls roll a hollow shell on a mandrel bar as an inner tool to a required nominal wall thickness and produce at specified positions over the length of the pipe a required wall thickening on the outer side of the pipe by opening the rolls in the rolling stands. The thickened wall is produced and finish-rolled by two rolling stands that are consecutive as seen in the rolling direction, in which the deviations of the finished contour of the thickening from an ideal circular cross-section are minimised, wherein the rolling stands located upstream are likewise opened as to avoid any contact of the rolls of these rolling stands with the previously produced thickening. 1. A method for producing hot-rolled , seamless pipes having at least one wall thickening which can be arranged at any positions over the length of the pipe , comprising rolling with rolls of a multiple-stand mandrel bar rolling mill having at least three rolling stands and at least two rolls per stand a hollow shell on a mandrel bar as an inner tool to a required nominal wall thickness and producing at specified positions over the length of the pipe a required wall thickening on the outer side of the pipe in comparison with the nominal wall thickness by opening the rolls in the rolling stands , wherein the thickened wall is produced and finish-rolled only by means of the two rolling stands , which are consecutive as seen in the rolling direction , at the specified positions , in which the deviations of the finished contour of the thickening from an ideal circular cross-section , which are produced by the roll contours when the rolls are being opened , are minimised , wherein the rolling stands located upstream thereof as seen in the rolling direction are likewise opened for a required wall ...

ROLLER MEMBER FOR USE IN AN APPARATUS FOR CLOSING PITTSBURGH SEAMS ASSOCIATED WITH DUCT ASSEMBLIES AND OTHER BOX-SHAPED MEMBERS

A vertical Pittsburgh Seam closing apparatus having a base supporting surface, a track mechanism for moving a carriage assembly which holds seam forming members used to close a Pittsburgh Seam, a pair of upper and lower guide members for guiding the duct section into a proper vertical position, and upper and lower clamping members positioned inside the duct section and adjacent the inside portion of the Pittsburgh Seam to be closed, the upper guide members and clamping member being selectively movable and adjustable for accommodating different duct section lengths. In one embodiment, the seam forming assembly includes three roller members mounted in vertical arrangement to each other, one roller member being V-shaped in configuration and the other two roller members being substantially cylindrical in shape. The V-shaped roller member may also include one or more projecting members for forming dimples in the closing process to prevent shifting and/or slipping of the closed seam. 1. A substantially V-shaped roller member for use in an apparatus for closing a Pittsburgh Seam associated with a duct section , the duct section having first and second end portions , the Pittsburgh Seam to be closed having a male portion , a female portion , and an overlapping edge portion , the substantially V-shaped roller member comprising:first and second side portions forming the V-shaped configuration of said roller member, said first and second side portions each having a surface portion for engaging the outside portion of the Pittsburgh Seam to be closed, said first and second side portions forming an apex at their joinder;at least one bore extending through at least a portion of one of said first and second side portions of said V-shaped roller member; andat least one projection member extending through said at least one bore, said at least one projection member having a portion thereof extending beyond at least one surface portion of said first and second side portions.2. The ...

Roll body for a hydrostatic rolling tool and hydrostatic rolling tool with the roll body

A roll body for a hydrostatic rolling tool includes a center, an axis of rotation running through the center, and a machining zone for rolling a workpiece. The roll body is rotatable about the axis of rotation and the machining zone has a working profile line formed in a cross-section of the roll body. The working profile line has a first working arc extending around a first machining center and a second working arc extending around a second machining center. The first machining center is arranged offset to the center, and the second machining center is arranged offset to the center and offset to the first machining center. In an example embodiment, the roll body has a parallel to the axis of rotation, the first machining center lies in the cross-section on the parallel, and the second machining center lies in the cross-section on the parallel. 110.-. (canceled)11. A roll body for a hydrostatic rolling tool , comprising:a center;an axis of rotation running through the center; the roll body is rotatable about the axis of rotation;', 'the machining zone comprises a working profile line formed in a cross-section of the roll body;', a first working arc extending around a first machining center; and', 'a second working arc extending around a second machining center;, 'the working profile line comprises, 'the first machining center is arranged offset to the center; and', 'the second machining center is arranged offset to the center and offset to the first machining center., 'a machining zone for rolling a workpiece, wherein12. The roll body of claim 11 , further comprising a parallel to the axis of rotation claim 11 , wherein:the first machining center lies on the parallel in the cross-section; andthe second machining center lies on the parallel in the cross-section.13. The roll body of claim 11 , further comprising a central axis running through the center and perpendicular to the axis of rotation claim 11 , wherein the central axis forms an axis of symmetry for the ...

GLASSY CARBON ROLL-TYPE MOLD MANUFACTURING METHOD FOR FINE PATTERN FORMATION, AND GLASSY CARBON ROLL-TYPE MOLD MANUFACTURED BY THE METHOD

Provided is a glassy carbon roll-type mold manufacturing method for fine pattern formation. The method is for manufacturing a glassy carbon roll-type mold configured to form a fine pattern having a micro-nano structure on a substrate including glass or a metal. The method includes: preparing a roll precursor including a thermosetting resin material, the roll precursor having a roll shape with a circumferential surface on which a pattern corresponding to the fine pattern is formed, the roll precursor being configured to press the substrate while rotating on the substrate; and carbonizing the roll precursor. 1. A method of manufacturing a glassy carbon roll-type mold for forming a fine pattern having a micro-nano structure on a substrate including glass or a metal , the method comprising:preparing a roll precursor comprising a thermosetting resin material, wherein the roll precursor has a roll shape with a circumferential surface on which a pattern corresponding to the fine pattern is formed, and the roll precursor presses the substrate while rotating relative to the substrate; andcarbonizing the roll precursor.2. The method of claim 1 , wherein the preparing of the roll precursor comprises:preparing a cylindrical mold having an inner surface on which a pattern corresponding to the fine pattern is formed;placing a core mold in a center portion of the cylindrical mold to form a ring-shaped space between the cylindrical mold and the core mold; andinjecting a high carbon polymer material into the ring-shaped space, thermosetting the high carbon polymer material, and separating the high carbon polymer material from the cylindrical mold.3. The method of claim 2 , wherein the thermosetting of the high carbon polymer material comprises primarily incompletely hardening the high carbon polymer material in the cylindrical mold at a first temperature and secondarily completely hardening the high carbon polymer material at a temperature higher than the first temperature after ...

WIRE OUTLET NOZZLE ARRANGEMENT

A wire nozzle outlet arrangement includes a plurality of wire nozzle outlets situated parallel to one another. The wire outlet nozzles each guide a winding wire in a wire feed direction, wherein the wire outlet nozzles include an outlet opening, through which the winding wire guided in the wire outlet nozzle exits the respective wire outlet nozzle. The wire outlet nozzle arrangement includes a repositioning device, which is designed to change the sequence of the wire outlet nozzles by repositioning the wire outlet nozzles. 1300302301302301302302. A wire nozzle outlet arrangement () , comprising a plurality of wire nozzle outlets () situated parallel to one another , each of which guides a winding wire () in a wire feed direction (X) , wherein the wire outlet nozzles () include an outlet opening , through which the winding wire () guided in the wire outlet nozzle () exits the respective wire outlet nozzle () ,wherein{'b': 320', '330', '302', '302, 'the wire outlet nozzle arrangement includes a repositioning device (, ) for changing the sequence of the wire outlet nozzles () by repositioning the wire outlet nozzles ().'}2300. The wire outlet nozzle arrangement () according to claim 1 ,wherein{'b': 302', '301, 'the outlet openings of the wire outlet nozzles () having a rectangular cross section, wherein the winding wire () also has a rectangular cross section.'}3300. The wire outlet nozzle arrangement () according to claim 1 ,further comprising{'b': 320', '330', '6', '2', '302, 'at least two repositioning shafts (, ), each mounted so as to rotate about an axis (P; P) perpendicular to the wire feed direction (X) spaced apart from one another, between which the wire outlet nozzles () are situated.'}4300. The wire outlet nozzle arrangement () according to claim 3 ,wherein{'b': 320', '330, 'the repositioning shafts (; ) move relative to one another parallel to their direction of longitudinal extension and perpendicular to the wire feed direction (X).'}5300. The wire outlet ...

METHOD FOR ROLLING METAL SHEETS WITH VARIABLE THICKNESS

Described herein is a method for rolling metal sheets of variable thickness. The method makes it possible to impress, during rolling, any distribution of areas of increased thickness within a figure corresponding to the plane development of a motor-vehicle component prior to the pressing operation. Impression of the desired distribution of areas of increased thickness envisages simultaneous impression, during rolling, of a further distribution of areas of increased thickness, or compensation areas. 1. A method for rolling metal sheets with variable thickness , the method including:determining a first distribution of areas (having an increased thickness with respect to a nominal rolling thickness of the sheet, said first distribution of areas including one or more areas,determining, for each area of said first distribution, an increase of volume of material corresponding to the difference between the volume of material underlying each area with the thickness assigned on the basis of said first distribution, and the volume of material underlying the corresponding area with the nominal rolling thickness,determining a second distribution of areas (having an increased thickness with respect to the nominal rolling thickness, wherein said second distribution of areas includes one or more areas,assigning, to each area of said second distribution an increase of volume of material corresponding to the difference between the volume of material underlying each area with the thickness assigned on the basis of said second distribution, and the volume of material underlying the corresponding area with the nominal rolling thickness, wherein the overall increase of volume of the one or more areas of said second distribution is equal or higher to the overall increase of volume of the one or more areas of said first distribution,positioning the one or more areas of said first distribution along said sheet in a desired position within a figure that corresponds to a plane development of ...

ROLLING DEVICE AND THE METHOD THEREOF

A rolling device for three-dimensional curved surface forming or thin sheet rolling of a sheet metal, comprising a forming roll (), a supporting mechanism, an adjusting mechanism and a driving mechanism. The forming roll () comprises an upper forming roll () and a lower forming roll (); the supporting mechanism is a multi-point supporting mechanism () or an overall supporting mechanism () for supporting the forming roll; the adjusting mechanism is a multi-point shape adjusting mechanism () and/or an overall displacing mechanism for adjusting the shape and/or relative height of the forming roll (); and the driving mechanism applies a torque to one or two ends of the upper forming roll () and/or the lower forming roll (). The present invention also provides a method for sheet rolling by using the rolling device. The rolling device and rolling method can achieve three-dimensional curved surface rolling or thin sheet rolling of a sheet metal simply, quickly and at a low cost. 1. A rolling device , comprising a forming roll , a supporting mechanism , an adjusting mechanism and a driving mechanism , characterized in that ,the forming roll comprises an upper forming roll and a lower forming roll, which have small diameters and are easy to be bending deformed;the supporting mechanism is a multi-point supporting mechanism or an overall supporting mechanism for supporting the forming roll;the adjusting mechanism is a multi-point shape adjusting mechanisms and/or an overall displacing mechanism, capable of adjusting the shape and/or relative height of the forming roll;the driving mechanism is capable of applying a torque to one or two ends of the upper forming roll and/or the lower forming roll, so that the upper forming roll and/or the lower forming roll are/is caused to rotate, and whereby a sheet metal is passed through a roll gap between the upper forming roll and the lower forming roll and is roll formed.2. The rolling device according to claim 1 , characterized in that ...

METHOD FOR MANUFACTURING SHAPED STEEL THE CROSS-SECTIONAL SHAPE OF WHICH CHANGES IN THE LONGITUDINAL DIRECTION, AND ROLL FORMING DEVICE

A roll forming device, for roll forming for the purpose of manufacturing shaped steel the cross-sectional shape of which varies in the longitudinal direction, is equipped with: first die rolls having an annular ridge part the cross-sectional shape of which varies in the circumferential direction; second die rolls having an annular groove part the cross-sectional shape of which varies in the circumferential direction; and a drive device for the first die rolls and the second die rolls. A gap is provided at the side surfaces of the annular ridge part of the first die rolls, across the entire circumference in the circumferential direction, such that the gap with respect to the side surfaces of the annual groove parts of the second die rolls widens inward in the radial direction. 1. A method of producing a shaped steel which varies in cross-sectional shape in the longitudinal direction from a sheet by roll forming , comprising:a step of preparing a first rolling die which has a rotation shaft and an annular ridge part which varies in cross-sectional shape in a circumferential direction which is centered about said rotation shaft;a step of arranging said first rolling die so that the rotation shaft of said first rolling die becomes perpendicular to a sheet feed direction;a step of preparing a second rolling die which has a rotation shaft and an annular groove part which varies in cross-sectional shape in a circumferential direction which is centered about said rotation shaft;a step of arranging said second rolling die so that a gap which is equal to a thickness of said sheet is formed between said first rolling die and second rolling die and the annular ridge part of said first rolling die and the annular groove part of said second rolling die engage;a step of making said first rolling die and said second rolling die rotate synchronized; anda step of feeding a sheet between said first rolling die and second rolling die,wherein the side surfaces of the annular ridge part ...

SHIMLESS SPACER

A spacer for adjusting the width between rollers of roller tooling for machines operable to form metal products has an annular male member with lateral bosses and an annular female member having different depth pockets accommodating the bosses to adjust the combined width of the male and female members. 1. An adjustable width spacer comprising:an annular male member,said annular male member having an annular circumferential first side face and an annular circumferential second side face opposite the first side face,a continuous cylindrical outer surface,a continuous cylindrical inner surface, said inner surface being concentric with the outer surface,three bosses joined to the second side face of the annular male members, adjacent bosses being circumferentially spaced 120 degrees from each other and each boss having a length projected laterally away from the second side face of the annular male member,an annular female member,said annular female member having an annular circumferential first side face and an annular circumferential second side face,a continuous cylindrical outer surface,a continuous cylindrical inner surface,six pockets extended from the second side face of the annular female member laterally into the annular female member, adjacent pockets being circumferentially spaced 60 degrees from each other,said six pockets comprise three first pockets circumferentially spaced 120 degrees apart and open to the second side face of the annular female member and three second pockets circumferentially spaced 120 degrees apart and open to the second side face of the annular female member,each of the first pockets having a first depth corresponding to the lengths of the bosses whereby when the bosses are located in the first pockets, the second side faces of the male and female members are in surface engagement and the combined male and female members have a first width, each of the second pickets having a second depth, said second depth being less than the first ...

ROLLS OF WINDING EQUIPMENT IN HOT-ROLLING FACTORY

In rolls of winding equipment in a hot-rolling factory, each roll includes a lower cladding layer formed on the surface of the roll barrel and a self-fluxing alloy layer formed on the lower cladding layer by thermal spraying and containing carbide particles dispersed therein. The lower cladding layer includes an Fe-based cladding layer which has a Shore hardness of 60 or greater and which contains, in terms of mass %, 0.1-0.4 C, up to 2.0 Si, up to 3.0 Mn, 1.0-15.0 Cr, and 2.5-5.0 Ni. The lower cladding layer further contains one or more of Mo, V, and Co, the contents of Mo, V, and Co being 0.1-5.0 mass %, 0.1-3.0 mass %, and 0.5-5.0 mass %, respectively. 1. A roll of winding equipment in a hot-rolling factory , the roll including a lower cladding layer formed on a surface of a barrel of the roll and a self-fluxing alloy layer formed on the lower cladding layer by thermal spraying and containing carbide particles dispersed therein , whereinthe lower cladding layer includes an Fe-based cladding layer which has a Shore hardness of 60 or more and contains 0.1 to 0.4 mass % C, 2.0 mass % or less Si, 3.0 mass % or less Mn, 1.0 to 15.0 mass % Cr, and 2.5 to 5.0 mass % Ni.2. The roll of winding equipment in a hot-rolling factory according to claim 1 , wherein the lower cladding layer further contains one or more of Mo claim 1 , V claim 1 , and Co claim 1 , and contents of Mo claim 1 , V claim 1 , and Co are 0.1 to 5.0 mass % claim 1 , 0.1 to 3.0 mass % claim 1 , and 0.5 to 5.0 mass % claim 1 , respectively.3. The roll of winding equipment in a hot-rolling factory according to claim 1 , wherein the lower cladding layer has a Shore hardness of 60 or more even when the self-fluxing alloy thermally-sprayed layer is fused a plurality of times. The present invention relates to rolls of winding equipment in a hot-rolling factory, and in particular, a composition of a coating layer which coats the surface of each roll.Rolls provided in winding equipment in a hot-rolling factory ...

METHOD FOR PRODUCING A SHEET METAL PROFILE FOR A DRAWER PULL-OUT GUIDE AND SHEET METAL PROFILE PRODUCED THEREBY AND DRAWER PULL-OUT GUIDE PRODUCED THEREBY

The invention relates to a method for producing a sheet metal profile, in particular consisting of steel, for a drawer pull-out guide having at least one web projecting laterally, in particular perpendicularly, from a flat surface of the sheet metal profile and extending in the longitudinal direction of the sheet metal profile, wherein, in a first method step, from at least one flat surface of a sheet metal billet there is extruded at least one web projecting laterally, in particular perpendicularly and extending in the longitudinal direction of the sheet metal billet, and in at least one further method step, preferably in 10 to 15 further method steps, the at least one web is squeezed together, i.e. is reduced in width and increased in height. The invention further relates to a sheet metal profile produced in this manner and to a drawer pull-out guide that comprises such a profile. 1. A method for producing a sheet metal profile , in particular consisting of steel , for a drawer extension guide having at least one web projecting laterally , in particular perpendicularly , from a flat surface of the sheet metal profile and extending in the longitudinal direction of the sheet metal profile , whereini) a first method step comprises squeezing out of at least one flat surface of an elongate sheet metal profile at least one web projecting laterally, in particular perpendicularly and extending in the longitudinal direction of the elongate sheet metal portion, andii) the at least one web is squeezed together in at least one further method step, preferably in between 10 and 15 further method steps, that is to say it is reduced in its width and increased in its height.2. The method as set forth in claim 1 , wherein during the first and/or the at least one further method step a return flow of the sheet metal material into the at least one flat surface of the elongate sheet metal portion is inhibited by delimiting material incisions.3. The method as set forth in claim 1 , ...

METHOD FOR MANUFACTURING PLATED STEEL SHEET HAVING EXCELLENT CLARITY OF IMAGE AFTER COATING, AND PLATED STEEL SHEET MANUFACTURED THEREBY

Provided is a method of manufacturing a plated steel sheet having excellent image clarity after coating. The method includes: providing a cold rolled steel sheet by cold rolling; plating the cold rolled steel sheet to manufacture a plated steel sheet; and temper rolling the plated steel sheet by inserting the plated steel sheet into a temper rolling mill. A long-wavelength waviness (Wsa1-5) of a final stand rolling roll is 0.4 μm or less (not including 0) during the cold rolling. 1. A method of manufacturing a plated steel sheet having excellent image clarity after coating , comprising:providing a cold rolled steel sheet by cold rolling;plating the cold rolled steel sheet to manufacture a plated steel sheet; andtemper rolling the plated steel sheet by inserting the plated steel sheet into a temper rolling mill,wherein a long-wavelength waviness (Wsa1-5) of a final stand rolling roll is 0.4 μm or less (not including 0) during the cold rolling.2. The method of claim 1 , wherein the cold rolled steel sheet has a long-wavelength waviness (Wsa1-5) of 0.2 μm or less (not including 0).3. The method of claim 1 , wherein the plating the cold rolled steel sheet is performed to allow a plating amount on a single surface to be 45 g/mor greater.4. The method of claim 1 , wherein claim 1 , in the temper rolling the plated steel sheet claim 1 , a roll having a long-wavelength waviness (Wsa1-5) of 0.4 μm or less (not including 0) is used.5. The method of claim 1 , wherein the plated steel sheet is provided as one of a hot-dip galvanized steel sheet claim 1 , a hot-dip aluminized steel sheet claim 1 , an aluminum alloy plated steel sheet claim 1 , an electro-galvanized steel sheet claim 1 , an alloy electro-galvanized steel sheet claim 1 , and a hot-dip galvannealed steel sheet.6. A plated steel sheet having excellent image clarity after coating claim 1 , comprising:a cold rolled steel sheet and a plating layer formed on the cold rolled steel sheet,wherein the cold rolled steel ...

Composite casting special-shaped roll and preparation process therefore

A composite casting special-shaped roll is compounded of two parts: an inner layer and an outer layer. The shape of body of the roll is curved surface, and a center hole is arranged for mount the shaft in that central axis of roll. The casting mold is designed into two parts, namely inner cast mold and outer cast mold through the curved surface design and mold design of the roll body. The composite casting special-shaped roll with the wear-proof working layer of the roll body that is resistant to impact, rapid cooling and heating resistance and the high-strength and high-toughness core is prepared by separate casting. It meets the requirements of the service conditions of rolls used by the steel pipe and cold forming sectional steel rolling mill and other equipment, improves the service life of the roll, saves the alloy material and reduces the manufacturing cost.

METHOD OF MANUFACTURING RECTANGULAR TUBE HAVING STEPPED PORTION

A method of manufacturing a rectangular tube having a stepped portion includes: forming V-shaped grooves on a rectangular tube at surfaces of an end thereof in a direction parallel to a longitudinal direction thereof; and pressing each of the surfaces having the V-shaped grooves formed thereon with a rotating roll from outside to inside, whereby the end of the rectangular tube is radially reduced. 1. A method of manufacturing a rectangular tube having a stepped portion comprising:forming V-shaped grooves on a rectangular tube at surfaces of an end thereof in a direction parallel to a longitudinal direction thereof; andpressing each of the surfaces having the V-shaped grooves formed thereon with a rotating roll from outside to inside, whereby the end of the rectangular tube is radially reduced.2. The method of manufacturing the rectangular tube having the stepped portion according to claim 1 , whereinsaid forming the V-shaped grooves on the rectangular tube at the surfaces of the end thereof comprises:placing an internal die having a V-shaped concave portion formed thereon inside the end of the rectangular tube;placing a V-shaped roll having a V-shaped convex portion formed thereon at a position that is opposite to the concave portion and is outside the end of the rectangular tube; andpressing the V-shaped roll against the rectangular tube at each of the surfaces of the end thereof while causing the V-shaped roll to rotate.3. The method of manufacturing the rectangular tube having the stepped portion according to claim 1 , whereinsaid end of the rectangular tube is radially reduced by:shifting a relative position of the rotating roll with respect to the rectangular tube in a longitudinal direction thereof while keeping a status that the rectangular tube is pressed with the rotating roll from outside to inside.4. The method of manufacturing the rectangular tube having the stepped portion according to claim 2 , whereinsaid end of the rectangular tube is radially ...

MULTI-ROLL TABLE RING-ROLLING MILL AS WELL AS METHOD FOR ROLLING RINGS IN A MULTI-ROLL TABLE RING-ROLLING MILL

In a multi-roll table ring-rolling mill and method, a mandrel roll can be switched from a rolling state into a free-running state, when a predetermined ring diameter is reached, even if the roll gap minimum has not yet been reached, in order to improve the size accuracy of the rolled rings. 1. A multi-roll table ring-rolling mill comprising:(a) a mandrel roll table rotating about a mandrel table axle;(b) at least one main roll rotating about a main roll axle and first and second mandrel rolls mounted in the mandrel roll table; and(c) a relief device for relieving at least the first mandrel roll of rolling forces;wherein the main roll axle and the mandrel roll table axle are mounted in unchangeable manner and eccentric to one another at least during a rolling process; andwherein the relief device acts independent of the main roll axle and the mandrel roll table axle being eccentric to one another.2. The multi-roll table ring-rolling mill according to claim 1 , further comprising a measurement device for measuring a ring diameter of a ring situated and rolled between the first mandrel roll and the main roll or between the second mandrel roll and the main roll.3. A multi-roll table ring-rolling mill comprising:(a) a mandrel roll table rotating about a mandrel table axle;(b) at least one main roll rotating about a main roll axle and first and second mandrel rolls mounted in the mandrel roll table; and(c) a measurement device for measuring a ring diameter of a ring situated and rolled between the first mandrel roll and the main roll or between the second mandrel roll and the main roll;wherein the main roll axle and the mandrel roll table axle are mounted in unchangeable manner and eccentric to one another at least during a rolling process.4. The multi-roll table ring-rolling mill according to claim 1 , wherein the relief device comprises a releasable mandrel roll lock of the first mandrel roll on the mandrel roll table.5. The multi-roll table ring-rolling mill according ...

WATER-BASED HIGH-TEMPERATURE-RESISTANT TITANIUM-STEEL ANTI-BONDING COATING AND USE THEREOF

The invention relates to a coating for preventing intermetallic bonding, in particular to a water-based high-temperature-resistant titanium-steel anti-bonding coating and its use in the preparation process of titanium ingot. The water-based high-temperature-resistant titanium-steel anti-bonding coating of the invention includes the following components in parts by weight: 50-150 parts of water-based film-forming agent, 0-50 parts of Zn powder, 400-450 parts of AlOpowder, and 250-350 parts of talcum powder. The coating of the invention can avoid the bonding reaction with a roller or a winch of the steel equipment in the rolling or perforation process of a titanium tube at 900° C., so as to improve the yield and the production efficiency of titanium material processing. Moreover, the process is simple and easy to operate, the coating is environment-friendly and pollution-free, and easy to prepare. 1. A water-based high-temperature-resistant titanium-steel anti-bonding coating , comprising the following components in parts by weight:50-150 parts of a water-based film-forming agent,0-50 parts of a Zn powder,{'sub': 2', '3, '400-450 parts of an AlOpowder,'}250-350 parts of a talcum powder,1-2 parts of a curing agent,0.5-1 parts of a dispersant, and1-5 parts of water.2. The water-based high-temperature-resistant titanium-steel anti-bonding coating according to claim 1 , comprising the following components in parts by weight:50-150 parts of the water-based film-forming agent,10-50 parts of the Zn powder,{'sub': 2', '3, '400-450 parts of the AlOpowder,'}250-350 parts of the talcum powder,1-2 parts of the curing agent,0.5-1 part of the dispersant, and1-5 parts of water.3. (canceled)4. The water-based high-temperature-resistant titanium-steel anti-bonding coating according to consisting of the following components in parts by weight:50-150 parts of the water-based film forming agent,10-50 parts of the Zn powder,{'sub': 2', '3, '400-450 parts of the AlOpowder,'}250-350 parts ...

WEAR-RESISTANT MEMBER

A wear-resistant member that is slidingly contacted with a hard member, wherein the wear-resistant member is formed of an alloy in which hard particles having an average particle size of 10 to 150 μm are bonded by a bonding portion. 1. A wear-resistant member that is slidingly contacted with a hard member ,wherein the wear-resistant member is formed of an alloy in which hard particles having an average particle size of 10 to 150 μm are bonded by a bonding portion.2. The wear-resistant member according to claim 1 , wherein the hard member that is slidingly contacted with the wear-resistant member has a Rockwell hardness of 80 or more.3. The wear-resistant member according to claim 1 , wherein the bonding portion comprises one or more selected from Ni and Co.4. The wear-resistant member according to claim 1 , wherein the hard particles comprise one or more selected from carbides claim 1 , nitrides claim 1 , silicides claim 1 , and oxides of W claim 1 , Ti claim 1 , Zr claim 1 , Hf claim 1 , V claim 1 , Nb claim 1 , Ta claim 1 , Cr and Mo.5. The wear-resistant member according to claim 4 , wherein the hard particles comprise WC.6. The wear-resistant member according to claim 1 , wherein the wear-resistant member has a volume ratio of the bonding portion to the hard particles of 30:70 to 80:20.7. The wear-resistant member according to claim 6 , wherein the volume ratio of the bonding portion to the hard particles is 40:60 to 60:40. The present invention relates to a wear-resistant member.Wear-resistant members are used in abrasion portions of various machines, parts, tools and the like.For example, Patent Literature 1 proposes a technique for improving wear resistance of a rolling compound roll by providing a homogeneous outer layer of MC-type carbide to the rolling compound roll used in a hot strip mill for hot rolling by centrifugal casting.Further, Patent Literature 2 proposes a technique for forming a lubricating film having improved wear resistance at a portion ...

Automatic guide adjustment from feedback of rolling parameters

In a rolling mill in which a hot rolled product is directed by a guide along a delivery path into a roll pass aligned on a mill pass line, a control system is disclosed for correcting any transverse misalignment of the delivery path with respect to the mill pass line. The system compromises an adjustment mechanism for shifting the guide transversely with respect to the mill pass line. Detectors measure a selected parameter indicative of the transverse misalignment and generate status signals representative thereof. A controller responds to the status signals and automatically and remotely operates the adjustment mechanism to correct the misalignment by transversely shifting the guide with respect to the mill pass line.

METHOD FOR PRODUCING METAL SHEET WITH RAISED LINES, METAL SHEET WITH RAISED LINES, AND STRUCTURAL COMPONENT

A method for producing a metal sheet with raised lines uses a rolling mill including a roll stand and produces a metal sheet including, on each of an upper surface and a lower surface, a plurality of raised lines extending in a rolling direction. The method includes a preparing step, an incorporating step, and a forming step. In the preparing step, grooved rolls are prepared, each of the grooved rolls including a plurality of grooves in an outer peripheral surface. In the incorporating step, the grooved rolls are incorporated in the roll stand as an upper roll and a lower roll, respectively. In the forming step, a workpiece is rolled by the rolling mill and is formed into a metal sheet with raised lines formed corresponding to the respective grooves of the grooved rolls. 1. A method for producing a metal sheet by use of a rolling mill including a roll stand , the metal sheet including , on each of an upper surface and a lower surface , one or more raised lines extending in a rolling direction , the method comprising:a preparing step of preparing grooved rolls, each of the grooved rolls including, in an outer peripheral surface, one or more grooves extending in a circumferential direction;an incorporating step of incorporating the grooved rolls in the roll stand as an upper roll and a lower roll, respectively;a forming step of rolling a workpiece by the rolling mill incorporating the grooved rolls, thereby forming the workpiece into a metal sheet with raised lines formed corresponding to the respective grooves of the grooved rolls.2. The method for producing a metal sheet with raised lines according to claim 1 , whereinin a longitudinal section of each of the grooved rolls, the grooves are in a bilaterally symmetric arrangement.3. The method for producing a metal sheet with raised lines according to claim 1 , whereinthe grooves are arranged such that, in longitudinal sections of the respective grooved rolls, the arrangement of the grooves of the grooved roll ...

METHOD FOR PREPARING ULTRAFINE-GRAINED SUPERALLOY BAR

A method for preparing an ultrafine-grained superalloy bar, the method including: 1) designing a rolling machine including two rollers and two guide plates, where each of the two rollers includes a first roller and a second roller; the first roller includes a first curve and the second roller includes a second curve; the first curve and the second curve form a generatrix of the two rollers; 2) disposing the two guide plates with two curved surfaces thereof opposite to each other; disposing the two rollers to be between the two guide plates; where the two rollers and the two guide plates form a deformation zone of the rolling machine; and 3) driving the two rollers to rotate around their central axes, heating and introducing a superalloy blank from a gap between two first rollers to the deformation zone of the rolling machine; advancing the superalloy blank towards two second rollers. 1. A method , comprising:1) designing a rolling machine comprising two rollers and two guide plates, wherein each of the two rollers is in the shape of a quasi-circular truncated cone and comprises a first roller and a second roller; each first roller comprises a first curve and the second roller comprises a second curve; the first curve and the second curve form a generatrix of each of the two rollers, and the generatrix is a working surface of the rolling machine; the two guide plates each comprises a curved surface;2) disposing the two guide plates with two curved surfaces thereof opposite to each other; disposing the two rollers to be between the two guide plates; wherein the two rollers and the two guide plates form a deformation zone of the rolling machine; a ratio of a maximum distance between two working surfaces of the two guide plates and a distance between two working surfaces of the two rollers in a cross section of the deformation zone is an ovality of the deformation zone; the ovality of the deformation zone is constant, and the cross section refers to a surface ...

HARD DISK DRIVE COVER AND METHODS OF MANUFACTURING

A hard disk drive cover with a smooth bottom (inner) surface and a textured outer surface is provided for covering a hard disk drive base assembly. A method of manufacturing the hard disk includes providing a metal material. The metal material is worked into a metal strip having a textured surface and an opposing smooth surface. A hard disk drive cover is stamped from the worked metal strip with the smooth surface being the inner surface of the stamped cover. The smooth inner surface of the hard disk drive advantageously enhances cleanliness within the base assembly. The smooth surface finish on the inner surface also advantageously enhances shear strength of a bond between a gasket and the inner surface. 1. A hard disk drive cover for covering a hard disk drive base assembly , comprising:an outer surface having a predetermined roughness average; andan inner surface having a predetermined roughness average that is less than the predetermined roughness average of the outer surface.2. The hard disk drive cover of claim 1 , wherein the predetermined roughness average of the outer surface is at least 0.127 micrometers greater than the predetermined roughness average of the inner surface.3. The hard disk drive cover of claim 1 , wherein the predetermined roughness average of the inner surface is greater than or equal to 0.051 micrometers and less than or equal to 0.254 micrometers.4. The hard disk drive cover of claim 1 , wherein the predetermined roughness average of the outer surface is 2-10 times the predetermined roughness average of the inner surface.5. The hard disk drive cover of claim 1 , wherein the predetermined roughness average of the outer surface is 5-8 times the predetermined roughness average of the inner surface.6. The hard disk drive cover of claim 1 , wherein the hard disk drive cover is made of a steel alloy.7. The hard disk drive cover of claim 1 , wherein the hard disk drive cover is made of an alloy of steel claim 1 , nickel claim 1 , and at least ...

SHAPED ROLLER FOR A PROFILING LINE

A shaped roller for a profiling line, comprising a conical portion () and an end portion (), concentric with respect to a rotating axis (Z), wherein the conical portion () is equipped with a vertex section (), and wherein the end portion () has a greater diameter than the vertex section () that defines a shoulder from the surface of the first conical portion (). 1232233232. A shaped roller for a profiling line , characterised in that it includes a conical portion () and an end portion () , concentric respect to a rotating axis (Z) , wherein the conical portion () is equipped with a vertex section () , and wherein the end portion () has greater diameter than the vertex section () that defines a shoulder from the surface of the first conical portion ().23223. The shaped roller according to claim 1 , wherein the end portion () is conical and connected to the conical portion () at the vertex section ().323. The shaped roller according to claim 2 , wherein the angle included between the tapers of the conical portion () and of the end portion () is greater than or equal to a right angle.4121213122. An operating unit for a profiling line arranged to receive at the inlet a profiled element that has a cross section defined by a lower side (B) claim 1 , two sides (S claim 1 , S) and two upper sides (T claim 1 , T) sloped upward so as to be converging towards each other claim 1 , characterised in that it includes two shaped rollers () according to claim 1 , positioned with the end portions () facing each other and positioned in such a way that the upper sides (T claim 1 , T) of the profiled element are in contact with the conical portion ().5312. The operating unit according to claim 4 , wherein the end portions () are arranged to come into contact with the end edges of the upper sides (T claim 4 , T).61. The operating unit according to claim 4 , including adjustment means to allow the movement of the shaped rollers () along one or more horizontal directions and/or along a ...

Outer layer of rolling roll and composite roll for rolling

An outer layer of a rolling roll having a chemical composition comprising by mass 1.3-2.8% of C, 0.3-1.8% of Si, 0.3-2.5% of Mn, 0-6.5% of Ni, 1-10% of Cr, 0.9-6% of Mo, 0-8% of W, 0.5-6% of V, 0-3% of Nb, and 0% or more and less than 0.01% of B, the balance being Fe and inevitable impurities, and meeting the formulae (1): 1000≤1177−52C+14Si−11Mn+6.8Cr+1W+0.65Mo+12V+15Nb≤1115, and (2): 5≤Cr+Mo+0.5W+V+1.2Nb≤15, wherein C, Si, Mn, Cr, W, Mo, V and Nb represent % by mass of these elements, and a structure containing eutectic carbide without graphite.

METHOD FOR PRODUCING METAL SHEET WITH RAISED LINES, METAL SHEET WITH RAISED LINES, AND STRUCTURAL COMPONENT

A method for producing a metal sheet with raised lines uses a rolling mill including roll stands. In a preparing step, a grooved roll is prepared, the grooved roll including grooves. In a choosing step, a stand at least one stage before the last stand is chosen. In an incorporating step, the grooved roll is incorporated in as an upper roil of the chosen, specified stand. In a forming step, a workpiece is formed into a metal sheet with raised lines formed corresponding to the respective grooves. In the forming step, a maximum rolling reduction achieved by rolls of the specified stand is set to a provisional value that is lower than a required value. After the leading edge of the workpiece reaches the stand next to the specified stand, the maximum rolling reduction of the specified stand is changed to the required value. 1. A method for producing a metal sheet by use of a rolling mill including at least two roll stands , the metal sheet including , on an upper surface or a lower surface , one or more raised lines extending in a rolling direction , the method comprising:a preparing step of preparing a grooved roll, the grooved roll including, in an outer peripheral surface, one or more grooves extending in a circumferential direction;a choosing step of choosing a roll stand at least one stage before a last roll stand, from the roll stands;an incorporating step of incorporating the grooved roll in the rolling mill as an upper roll or a lower roll of the chosen, specified roll stand; anda forming step of rolling a workpiece by the rolling mill incorporating the grooved roll, thereby forming the workpiece into a metal sheet with raised lines formed corresponding to the respective grooves of the grooved roll, whereinin the forming step, until a leading edge of the workpiece reaches a roll stand next to the specified roll stand, a maximum rolling reduction achieved by rolls of the specified roll stand is set to a provisional value that is less than a required value, and ...

Mill rolls capable of rolling long kilometers for esp production line

Mill rolls capable of rolling long kilometers used for ESP production line and a method for rolling long kilometers using the mill rolls. The mill rolls include rolls (3, 4), a bearing box (2) and a roll shifting hydraulic cylinder (1), wherein the middle portion of the surface of the roll sinks inwards, one end of the rolls is frustum-shaped, smaller and smaller outwards, so that the roll surface forms a compensation ramp, and the other end of the rolls is cylindrical. The upper roll (3) and the lower roll (4) have the same roll profile and are positioned in the opposite direction. The mill rolls are characterized by reduced runaway of the rolled product and a longer service life.

METHOD FOR REGENERATING AND/OR INCREASING THE DURABILITY OF A MILL ROLL

A method for regenerating and increasing durability of a mill roll, which is characterized in that lateral working surfaces () of a mill roll (), having the width of 20 mm to 400 mm, are covered preferably by means of the laser cladding with a layer of metallic material () having the thickness of 0.1 to 4.0 mm, preferably 1.5 to 2.0 mm. 15-. (canceled)63. A method for regenerating and increasing durability of a mill roll designed for producing H-sections wherein lateral working surfaces of the mill roll for producing H-sections , having the width of 20 to 400 mm , are covered by means of the laser cladding with a layer of metallic material () with the thickness of 0.1 to 4.0 mm , preferably 1.5 to 2.0 mm.7. The method according to claim 6 , wherein the metallic material comprises 0.01-0.03% of C claim 6 , 1.0-2.0% of Mn claim 6 , 0.1-1.1% of Si claim 6 , 17.0-19.0% of Cr claim 6 , 2.0-3.5% of Mo claim 6 , 12.0-16.0% of Ni claim 6 , and the rest is Fe and unavoidable impurities.8. The method according to claim 6 , wherein the metallic material comprises 0.9-1.4% of C claim 6 , 27.0-32.0% of Cr claim 6 , 4.0-6.0% of W claim 6 , and the rest is Co and Nb blend with 7.0-15.0% of Nb included in the Co and Nb blend and unavoidable impurities.9. The method according to claim 6 , wherein prior the laser cladding step a layer of native material is removed to the depth of 0.1 to 4.0 mm claim 6 , preferably up to 2.0 mm claim 6 , from the worn out lateral working surface of the mill roll claim 6 , and then the layer of metallic material with the thickness of 0.1 to 4.0 mm claim 6 , preferably up to 2.0 mm claim 6 , is applied on the exposed lateral working surface by means of laser cladding claim 6 , and next the layer of metallic material is preferably adjusted to the basic size.10. The method according to claim 6 , wherein the dimensions of the lateral working surface of the mill roll are understated at production to the depth of 0.1 to 4.0 mm claim 6 , preferably up to 2.0 ...

CENTRIFUGALLY CAST HOT-ROLLING COMPOSITE ROLL

A centrifugally cast hot-rolling composite roll comprising (a) an outer layer made of cast iron having a chemical composition comprising by mass 2.5-3.5% of C, 1.3-2.4% of Si, 0.2-1.5% of Mn, 3.5-5.0% of Ni, 0.8-1.5% of Cr, 2.5-5.0% of Mo, 1.8-4.0% of V, and 0.2-1.5% of Nb, the balance being Fe and inevitable impurities, a mass ratio of Nb/V being 0.1-0.7, and a mass ratio of Mo/V being 0.7-2.5, and meeting the condition of 2.5≦V+1.2Nb≦5.5, and having a structure comprising 0.3-10% by area of a graphite phase; (b) a shaft portion made of ductile cast iron in which the area ratio of ferrite is 35% or less; and (c) an intermediate cast iron layer. 1. A centrifugally cast hot-rolling composite roll comprising (a) an outer layer made of cast iron having a chemical composition comprising by mass 2.5-3.5% of C , 1.3-2.4% of Si , 0.2-1.5% of Mn , 3.5-5.0% of Ni , 0.8-1.5% of Cr , 2.5-5.0% of Mo , 1.8-4.0% of V , and 0.2-1.5% of Nb , the balance being Fe and inevitable impurities , a mass ratio of Nb/V being 0.1-0.7 , and a mass ratio of Mo/V being 0.7-2.5 , and meeting the condition of 2.5≦V+1.2Nb≦5.5 , and having a structure comprising 0.3-10% by area of a graphite phase; (b) a shaft portion made of ductile cast iron; and (c) an intermediate cast iron layer.2. The centrifugally cast hot-rolling composite roll according to claim 1 , wherein the total amount of V and Nb in said intermediate layer near the boundary with the shaft portion is 70% or less of that at said discard diameter of the outer layer; and wherein the Cr content in said intermediate layer near the boundary with the shaft portion is 80% or more of that at said discard diameter of the outer layer.3. The centrifugally cast hot-rolling composite roll according to claim 1 , wherein said outer layer further comprises 0.1-5.0% of W.4. The centrifugally cast hot-rolling composite roll according to claim 3 , wherein the chemical composition of said outer layer meets the conditions of the following formulae (1)-(3 ...

OUTER PANEL FOR PILLAR OF VEHICLE, AND METHOD AND ROLLING APPARATUS FOR MANUFACTURING THE SAME

An outer panel for a pillar of a vehicle includes a central portion, flanges at opposite sides thereof for bonding to an inner panel, and opposite side portions between the central portion and the flange portions in a transverse sectional shape, wherein each of the side portions located at opposite sides of the central portion has a collision energy absorbing section having a thickness that is smaller than that of the central portion. 15-. (canceled)6. A rolling apparatus for generating a thickness difference by tailor-rolled-blank (TRB) rolling a steel plate that is a material of an outer panel to manufacture the outer panel having a collision energy absorbing section in which side portions located at opposite sides of a central portion have reduced thicknesses as compared with the central portion , comprising:two rollers disposed in a direction parallel to a lengthwise direction of the outer panel manufactured of the steel plate such that the steel plate passes between the two rolling rollers by making a widthwise direction of the steel plate passing through the upper rolling roller and the lower rolling roller the same as a lengthwise direction of the outer panel, and one of the upper rolling roller and the lower rolling roller is a roller having a sectional shape in which a protrusion is formed at one side of a circular cross-section.7. The rolling apparatus of claim 6 , wherein the other of the upper rolling roller and the lower rolling roller is a roller having a circular cross-section.8. The rolling apparatus of claim 7 , wherein the upper rolling roller is a roller having a sectional shape in which a protrusion is formed at one side of the circular shape and the lower rolling roller is a roller having a circular cross-section.9. A method of manufacturing an outer panel in which side portions located at opposite sides of a central portion have collision energy absorbing sections in which thicknesses thereof are smaller than a thickness of the central portion ...

ROLLED SURFACES HAVING A DULLED GLOSS FINISH

This application discloses cold rolled surfaces having a dulled gloss finish. The finish has a fairly uniform glossiness with a slightly matted appearance and with minimal directionality. The surfaces are prepared from work rolls having an Ra value of from 0.2 to 0.4 μm and an Rz value of less than 3.0 μm. Methods of preparing the surfaces are also described herein. 1. A method of preparing a work roll for applying a dulled gloss finish on a metal substrate surface , comprising:(a) roughening an unfinished work roll surface to form a roughened work roll surface, wherein the roughened work roll has an Ra of 0.20 μm or less and an Rz of 2.00 μm or less;(b) polishing the roughened work roll surface to form a polished work roll surface having an Ra of less than 0.015 μm and an Rz of less than 0.25 μm;(c) uniformly roughening the polished work roll surface to form a uniformly roughened work roll surface having an Ra of from 0.35 μm to 0.45 μm and an Rz of less than 5μm; and(d) finishing the uniformly roughened work roll surface to form a work roll surface, wherein the work roll surface has an Ra value of from 0.2 to 0.4 μm and an Rz value of less than 3.0 μm.2. The method of claim 1 , wherein the work roll surface has an Ra value of from 0.22 μm to 0.37 μm.3. The method of claim 1 , wherein the work roll surface has an Ra value of from 0.25 μm to 0.35 μm.4. The method of claim 1 , wherein the work roll surface has an Rz value of less than 2.5 μm.5. The method of claim 1 , wherein the work roll surface has an Rz value of less than 2.0 μm.6. The method of claim 1 , further comprising treating one or both sides of the work roll.7. The method of claim 6 , wherein the treating comprises one or more of texturing claim 6 , controlled surface modification claim 6 , media blasting claim 6 , chrome coating claim 6 , and embossing.8. A work roll prepared according to the method of .9. A method of forming a dulled gloss finish on a metal substrate claim 1 , comprising:(a) roughening ...

Method and device for structurally conditioning a roll

The object of providing a method for conditioning a working roll with which the material properties of a working roll can be set in a process-reliable and uniform manner is achieved by a method in which a roll and at least one pressure tool are rotated relative to each other, in which pressure is applied locally to the roll by means of the at least one pressure tool, comprising at least one pressure element, via the at least one pressure element, and in which a deep rolling process is carried out.

Rolling roll and plated steel sheet produced thereby

Provided is a rolling roll including: a rolling roll body ( 112 ) installed to a rolling mill and used for rolling a material; and a surface treatment part formed on a surface of the rolling roll body ( 112 ) and coming into contact with the material, wherein the surface treatment part is formed to have fine concave and convex patterns forming ridges and valleys on a surface thereof, wherein the fine concave and convex patterns are formed such that the roughness skewness, indicating the difference between the height of the ridges and the depth of the valleys, has a negative (−) value.

ROLL FOR ROLLING SURFACE TOPOGRAPHY OF STEEL PLATE AND METHOD FOR MANUFACTURING SAME

A roll for rolling surface topography of a steel plate is disclosed. A plurality of raised textured points are arranged on a roll surface. The shape formed by a joint between each single textured point and the roll surface is circular or approximately circular. The circular shape has a diameter of 50˜150 μm. Each single textured point has a raised height of 2˜12 μm, and the overlap among adjacent textured points is lower than 10%. The quantity variance of the textured points per square millimeter of the roll surface is lower than 20%, and the coverage area ratio of the textured points in each square millimeter is 30˜90%. The method comprises performing surface treatment on a feed roll to control the surface roughness Ra of the roll to be smaller than 0.5 μm; and performing layer-by-layer ablation on a surface material of the roll to form the textured points. 1. A roll for rolling a surface topography of a steel plate , characterized in that a plurality of raised textured points are arranged on a roll surface; a shape formed by a joint between each single textured point and the roll surface is circular or approximately circular , and the circular shape has a diameter of 50˜150 μm; the each single textured point has a raised height of 2˜12 μm , and the overlap among adjacent textured points is lower than 10%; and the quantity variance of the textured points per square millimeter of the roll surface is lower than 20% , and the coverage area ratio of the textured points in each square millimeter is 30˜90%.2. The roll for rolling the surface topography of the steel plate according to claim 1 , characterized in that bottom diameters of the raised textured points are not smaller than top diameters.3. The roll for rolling the surface topography of the steel plate according to claim 1 , characterized in that the overlap among adjacent textured points is lower than 5%.4. The roll for rolling the surface topography of the steel plate according to claim 3 , characterized in ...

CONTINUOUS CASTING EQUIPMENT

Continuous casting equipment includes a casting product reduction apparatus and a casting product drawing apparatus, the casting product reduction apparatus including a pair of casting product reduction rolls that sandwich and apply pressure to a casting product and being configured to apply reduction to the casting product, the casting product drawing apparatus being provided in a following stage of the casting product reduction apparatus and configured to sandwich and draw the casting product with a pair of casting product drawing rolls. At least one of the pair of casting product reduction rolls includes a large-diameter part that projects radially outward in an axial-direction center region and applies pressure to a width-direction center region of the casting product. The casting product that is subjected to reduction by the casting product reduction apparatus has a depressed part corresponding to the large-diameter part. At least one of the pair of casting product drawing rolls of the casting product drawing apparatus includes a depressed part supporting part that contacts with and supports the depressed part, and is driven by a driving mechanism An axial-direction length Lof the depressed part supporting part and an axial-direction length Lof the large-diameter part of the casting product reduction roll satisfy 0.5×L≦L Подробнее

COMPOSITE ROLL FOR ROLLING

The present invention provides a composite roll for rolling including an outer layer having excellent wear resistance, surface roughening resistance, crack resistance, and accident resistance due to segregation of MC carbides being suppressed to adjust the amount of graphite to be crystallized. The composite roll for rolling of the present invention is a composite roll for rolling that has an outer layer and is produced through centrifugal casting, and the outer layer contains C in an amount of 2.2 mass % to 3.2 mass %, Si in an amount of 1.0 mass % to 3.0 mass %, Mn in an amount of 0.3 mass % to 2.0 mass %, Ni in an amount of 3.0 mass % to 7.0 mass %, Cr in an amount of 0.5 mass % to 2.5 mass %, Mo in an amount of 1.0 mass % to 3.0 mass %, V in an amount of 2.5 mass % to 5.0 mass %, Nb in an amount of more than 0 mass % and 0.5 mass % or less, and a remaining portion including Fe and inevitable impurities, and a condition (a): Nb mass %/V mass %<0.1, and a condition (b): 2.1×C mass %+1.2×Si mass %−Cr mass %+0.5×Mo mass %+(V mass %+Nb mass %/2)≤13.0 mass % are satisfied. 15-. (canceled)6. A composite roll for rolling that has an outer layer and is produced through centrifugal casting ,wherein the outer layer contains C in an amount of 2.2 mass % to 3.01 mass %, Si in an amount of 1.0 mass % to 3.0 mass %, Mn in an amount of 0.3 mass % to 2.0 mass %, Ni in an amount of 3.0 mass % to 7.0 mass %, Cr in an amount of 0.5 mass % to 2.5 mass %, Mo in an amount of 1.0 mass % to 3.0 mass %, V in an amount of 2.5 mass % to 5.0 mass %, Nb in an amount of more than 0 mass % and 0.5 mass % or less, and a remaining portion including Fe and inevitable impurities, anda condition (a): Nb mass %/V mass %<0.1, anda condition (b): 2.1×C mass %+1.2×Si mass %−Cr mass %+0.5×Mo mass %+(V mass %+Nb mass %/2)≤13.0 mass % are satisfied.7. The composite roll for rolling according to claim 6 ,wherein Mo of the outer layer is in an amount of more than 1.55 mass % and 3.0 mass % or less.8. A ...

SYSTEMS AND METHODS FOR CONTAINING VISCOUS MATERIALS IN ROLL PROCESSING

Provided herein are systems and methods for containing a viscous material, such as a coolant, on a roll and/or a roll processed engineering material (e.g., a metal strip). In particular, a viscous material containment system can include a movable seal and a gas delivery device. A method for cooling a roll can include applying a viscous material, such as a coolant, to the roll and containing the viscous material on the roll using the viscous material containment system. In some cases, the viscous material containment system can be used to facilitate removal of the viscous material from the roll and/or the roll processed engineering material. 1. A system for containing a viscous material applied to a surface , comprising:a seal movable between a first position and a second position, wherein a contacting edge of the seal contacts the surface in the first position and is separated from the surface by a gap in the second position; anda gas delivery system configured to contain the viscous material to a side of the seal when the seal is in the second position and separated from the surface by the gap.2. The system of claim 1 , wherein the surface is a moving surface claim 1 , wherein the moving surface comprises a roll or a roll processed engineering material.3. The system of claim 2 , wherein the moving surface carries the viscous material toward the seal claim 2 , wherein the moving surface comprises a roll or a roll processed engineering material.4. The system of claim 1 , wherein the viscous material comprises a liquid claim 1 , a gel claim 1 , a sol-gel claim 1 , a glass claim 1 , or any combination thereof claim 1 , wherein the viscous material further comprises a cleaner claim 1 , a lubricant claim 1 , a treatment claim 1 , a pretreatment claim 1 , an aesthetic coating claim 1 , a coolant claim 1 , or any combination thereof.5. The system of claim 2 , wherein the roll comprises a work roll claim 2 , a backup roll claim 2 , or an intermediate roll claim 2 , wherein ...

ROLLER MEMBER FOR USE IN AN APPARATUS FOR CLOSING PITTSBURGH SEAMS ASSOCIATED WITH DUCT ASSEMBLIES AND OTHER BOX-SHAPED MEMBERS

A vertical Pittsburgh Seam closing apparatus having a base supporting surface, a track mechanism for moving a carriage assembly which holds seam forming members used to close a Pittsburgh Seam, a pair of upper and lower guide members for guiding the duct section into a proper vertical position, and upper and lower clamping members positioned inside the duct section and adjacent the inside portion of the Pittsburgh Seam to be closed, the upper guide members and clamping member being selectively movable and adjustable for accommodating different duct section lengths. In one embodiment, the seam forming assembly includes three roller members mounted in vertical arrangement to each other, one roller member being V-shaped in configuration and the other two roller members being substantially cylindrical in shape. The V-shaped roller member may also include one or more projecting members for forming dimples in the closing process to prevent shifting and/or slipping of the closed seam. 1. An apparatus for closing a Pittsburgh Seam associated with a duct section , the duct section having first and second end portions , the Pittsburgh Seam to be closed having a male portion , a female portion , and an overlapping edge portion , the apparatus comprising:a base member having a supporting surface for positioning a duct section in a vertical orientation thereon;a lower guide assembly for guiding the Pittsburgh Seam to be closed associated with the first end portion of the duct section into proper position on the supporting surface of the base member;an upper guide assembly for guiding the Pittsburgh Seam to be closed associated with the second end portion of the duct section into proper position on the apparatus;a lower clamping member positionable inside the first end portion of the duct section adjacent the inside portion of the Pittsburgh Seam to be closed;an upper clamping member positionable inside the second end portion of the duct section adjacent the inside portion of the ...

スラブの粗圧延機

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Валковые узлы непрерывного прокатного стана

ВАЛКОВЫЕ УЗЛЫ НЕПРЕРЫВНОГ,0 ПРОКАТНОГО СТАНА, содержащие рабочие валки с выпуклой образунмцей бочки и опорные валки с концевыми скосами бочки, отличающи ес  тем, что, с целью повышени  производительности стана за счет уменьшени  обрывов полос, длина концевых скосов бо3 «-, Ы «ИБЛЙ01 КА чек опорного валка,. установленнь1х в каждой последующей клети, меньше длины концевых скосов, установленных в каждой предвдущей клети в 1, ,2 раза, а выпуклость образующей бочки рабочих валков равна ,f2K ,2i{o,e5-h) U,f( , Где j - базова  величина выпуклости шлифованных рабочих валков клети при максимальной ширине полосы и минимальной длине скосов на бочках опорных валков , (5 I С длина бочки опорного валка, длина концевого скоса (вреза ) опорного валка-, К коэффициент , учитываниций шероховатость валков (К 1 а дл  шлифованных валков; ,25 - дл  насеченных валков); коэффициент, учитывающий длину нагруженной части ра- .бочего валка полосой (,55-0,90).

Wide strip rolling mill rolling roll

ПРОКАТНЫЙ ВАЛОК КЛЕТИ ШИРОКОПОЛОСНОГО СТАНА; форма образующей бочки которого включает рабочий участок, имеющий параболическую поверхность с радиусом сечени  валка менее 0,6,6 длины рабочего участка и примыкающие к ней с обеих сторон конические поверхности, о т л и - ; чающийс  тем, что, с.цельюj уменьшени  расхода прокатываемого металла путем уменьшени  неравномерности деформаций поперечной разнотолщинности и трещинообраэовани  проката в зонах уширени ,переход параболической поверхности в кони- ; ческую выполнен на рассто нии, определ емом отношением -|- 0,1-0,15,, где S - рассто ние от краев рабочего з астка валка к его д середине {( R - радиус среднего сечени  (Л ббчки валка. 42 ffi ROLLED FELT CLEES OF THE BROADBAND MILL; the shape of the drum-forming unit includes a working section having a parabolic surface with a roll cross-section radius less than 0.6.6 the length of the working section and conic surfaces adjacent to it on both sides, about t and u; Considering that, the goal of reducing the consumption of rolled metal by reducing the non-uniformity of the deformations of the transverse thickness and cracking of the rolled metal in the broadening zones, the transition of the parabolic surface to the horse; is made at a distance determined by the ratio - | - 0.1-0.15, where S is the distance from the edges of the working roll to its midpoint {(R is the radius of the average cross section (L bbchka roll. 42 ffi

Crown roller controlling profile and rolled strip flatness

FIELD: metallurgy. SUBSTANCE: invention refers to pressure metal processing, particularly to shape of mill frame rollers for strip manufacturing. Mill frame for rolled strip (1) manufacturing includes work rollers (10, 11) supported by bearing rollers (30, 31) or by intermediate rollers (20, 21) and bearing rollers (30, 31), if required. Work rollers (10, 11) and/or intermediate rollers (20, 21) and/or bearing rollers (30, 31) can perform axial movement. Body length (L) of each intermediate roller (20, 21) in six-roller frame or of each work roller in four-roller frame is comprised by cylindrical body section (Z) and curved convex body section R(x). Transition point (A) between cylindrical and curved sections is set within L/2<=x<L distance from cylindrical body section end. Curved contour running along a part of roller length in direction of body end and on respectively opposite sides of both rollers (20, 21) is described by polynomial formula R(x)=a 0 +…a n x n , where n>=5. EFFECT: homogeneous change of effort applied to rolls from metal side, resulting in prolonged service life of crown rollers. 8 cl, 8 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 391 154 (13) C2 (51) МПК B21B 13/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2006132233/02, 09.09.2005 (24) Дата начала отсчета срока действия патента: 09.09.2005 (73) Патентообладатель(и): СМС ЗИМАГ АКЦИЕНГЕЗЕЛЛЬШАФТ (DE) (43) Дата публикации заявки: 20.03.2008 2 3 9 1 1 5 4 (45) Опубликовано: 10.06.2010 Бюл. № 16 (56) Список документов, цитированных в отчете о поиске: DE 3624241 A1, 28.01.1988. DE 69115746 T2, 04.07.1996. EP 0049798 A2, 21.04.1982. RU 2210446 C2, 20.08.2003. 2 3 9 1 1 5 4 R U (86) Заявка PCT: EP 2005/009717 (09.09.2005) C 2 C 2 (85) Дата перевода заявки PCT на национальную фазу: 07.09.2006 (87) Публикация PCT: WO 2006/029770 (23.03.2006) Адрес для переписки: 129090, Москва, ул. Б.Спасская, 25, ...

Method of forming shape of sheet rolling mill rolls

자동차 외판용 합금화 용융아연도금강판 제조 방법

본 발명은 표면외관 및 내크레터링성이 우수한 자동차 외판용 합금화 용융아연도금강판의 제조 방법에 관한 것이다. 본 발명은 도금소재인 냉연강판을 방전달롤 또는 전자빔달롤로 평균조도가 1.0㎛이하, 피크수(PPI)가 350이상이 되도록 압연하고 합금화 용융아연도금을 실시하는 것을 특징으로 하는 자동차 외판용 합금화 용융아연도금강판 제조 방법을 제공한다. 본 발명에 의하면, 표면외관 및 도장선영성이 우수한 GA재를 용이하게 제조할 수 있다. 특히 합금화 처리후 고압하로 조질압연을 행하는 기존 방법에 비해서 표면손상이 없기 때문에 가공시 파우더링 결함 발생 방지 효과 및 도금층이 검게 변하는 흑점을 방지할 수 있는 효과를 가진다.

A casting equipment for continuous strip

본 발명은 알루미늄 및 마그네슘을 연속 주조시에 고액계면이 비대칭 형상이 되도록 제어 가능한 판재 연속 주조장치에 관한 것이다. The present invention relates to a plate continuous casting apparatus which can be controlled so that the solid-liquid interface becomes an asymmetrical shape during continuous casting of aluminum and magnesium. 본 발명에 의한 판재 연속 주조장치는, 한 쌍의 회전하는 롤러(124)가 구비되어 용탕에 압력을 가하는 압연수단(120)과, 상기 압연수단(120)의 동작을 제어하기 위한 제어수단(140)과, 재료에 열을 가하여 용탕을 형성하는 용해로(160)와, 상기 용해로(160)로부터 용탕을 제공받아 상기 압연수단(120)으로 용탕을 주입하는 용탕주입수단(180)을 포함하여 구성되며, 상기 용탕주입수단(180)은 한 쌍의 롤러(124) 중 상측에 위치한 롤러(124)와 하측에 위치한 롤러(124)에 서로 다른 접촉면적을 갖도록 설치되는 것을 특징으로 한다. 이와 같은 구성에 의하면, 크랙 등의 불량이 감소하는 이점이 있다. Sheet continuous casting apparatus according to the present invention is provided with a pair of rotating rollers 124 to apply pressure to the molten metal and the control means 140 for controlling the operation of the rolling means 120 ), A melting furnace 160 that forms a molten metal by applying heat to the material, and a molten metal injection means 180 that receives the molten metal from the melting furnace 160 and injects the molten metal into the rolling means 120. The molten metal injection means 180 is installed to have a different contact area between the roller 124 located above and the roller 124 located below the pair of rollers 124. According to such a structure, there exists an advantage that defects, such as a crack, reduce. 압연수단, 노즐, 비대칭, 연속주조 Rolling means, nozzles, asymmetrical, continuous casting

Rolling roll and coated steel sheet manufactured thereby

본 발명은 도금강판의 표면에 규칙적인 미세요철을 부여하여 프레스 성형시 발생하는 골링을 방지하도록 하는 압연롤 및 이에 의해 제조된 도금강판에 관한 것으로, 압연롤은, 롤본체; 및 상기 롤본체의 표면에 형성되고, 볼록부와 오목부를 구비한 요철패턴을 포함하고, 상기 볼록부는 상기 볼록부의 주변을 가공하는 양각 가공에 의해 형성되며, 상기 요철패턴은 조도 스큐니스(Rsk)가 음(-)의 값을 갖도록 형성된다. The present invention relates to a rolling roll for imparting regular fine concavities and convexities to the surface of a coated steel sheet to prevent goring occurring during press forming, and a coated steel sheet produced thereby. And a concavo-convex pattern formed on a surface of the roll body, the concavo-convex pattern having convex portions and concave portions, the convex portions being formed by embossing processing for processing the convex portions, Is set to have a negative value.

Roll for rolling seamless pipes

A roll for rolling seamless pipes which has a roll neck and a roll body, wherein the surface layer of the roll body comprises by mass: C: 1.5 to 2.5%, Si: 1.3 to 3.5%, Mn: 0.1 to 2.0%, Ni: 0.5 to 8.0%, Cr: 0.1 to 2.0%, Mo: 0.2 to 5.0%, V: 0.1 to 5.0%, W: 0.1 to 5.0%, Nb: 0.1 to 5.0%, and Co: 0.05 to 2.0% with the balance being Fe and impurities, and further contains 0.5 to 5.0% of graphite by area ratio. The roll has high abrasion resistance and excellent biting properties.