УСТРОЙСТВО ДЛЯ УДАЛЕНИЯ МАСЛА, ПРЕДНАЗНАЧЕННОЕ ДЛЯ ОЧИСТКИ ТРУБ, СВЕРНУТЫХ БУХТАМИ

Изобретение относится к области очистки труб. Устройство для удаления масла предназначено для очистки труб, свернутых бухтами, и имеет печь для нагрева помещаемых в нее труб, в которой предусмотрена или не предусмотрена соответствующая зона охлаждения, а также имеет газопроводную систему, предназначенную для подачи продувочного газа в трубы и соответственно его отвода из труб и снабженную средствами для разъемного герметичного соединения с газоподводящим трубопроводом с одной стороны и газоотводящим трубопроводом с другой стороны. Техническим результатом изобретения является обеспечение возможности простого и надежного подсоединения газоподводящего и газоотводящего трубопроводов к очищаемым трубам. Устройство позволяет решить эту задачу благодаря тому, что оба конца каждой трубы по отдельности подсоединены к одной и той же соединительной головке, которая имеет газовпускное отверстие и расположенное на одной оси с ним газовыпускное отверстие, а концевой участок газоподводящего трубопровода ...

СПОСОБ НЕПРЕРЫВНОЙ РАЗЛИВКИ ПОЛОСЫ ИЗ ЭЛЕКТРОТЕХНИЧЕСКОЙ СТАЛИ С КОНТРОЛИРУЕМЫМ ОРОСИТЕЛЬНЫМ ОХЛАЖДЕНИЕМ

Изобретение относится к производству непрерывно-литой полосы из электротехнической стали с ориентированным зерном. В способе используется операция быстрого контролируемого охлаждения с использованием водяных форсунок с целью контроля ориентации зерна готовой продукции. Для получения в стальной полосе нужной ориентации зерна и хороших физических свойств, например минимальной склонности к растрескиванию после формирования непрерывно-литой полосы из электротехнической стали, ее подвергают начальному вторичному охлаждению до температуры от приблизительно 1150°С до приблизительно 1250°С и в заключение подвергают быстрому вторичному охлаждению, например, путем водяного оросительного охлаждения со скоростью от приблизительно 65°С/с до приблизительно 150°С/с до температуры, не превышающей приблизительно 950°С. 3 н. и 20 з.п. ф-лы, 5 табл., 1 ил.

СПОСОБ ВОССТАНОВИТЕЛЬНОЙ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ИЗДЕЛИЙ ИЗ ЖАРОСТОЙКИХ ХРОМОНИКЕЛЕВЫХ СТАЛЕЙ

Изобретение относится к металлургии, а именно к восстановительной термической обработке сменных деталей печного металлургического оборудования, преимущественно отработанных печных роликов, радиационных и жаровых труб, изготовленных из жаростойких сталей. Способ предусматривает аустенизацию с нагревом до 1000-1200oС со скоростью 15-30oС/ч, выдержку 5-40 ч и медленное охлаждение под колпаком печи до 300-400oС со скоростью 20-50oС/ч, осуществляемые в среде глубокоочищенного и осушенного водорода с точкой росы не выше -50oС, а дальнейшее охлаждение проводят в безокислительной атмосфере с выдержкой 2-5 ч при 300 - 400oС и последующим охлаждением на воздухе. Предлагаемый способ позволяет восстанавливать исходные физико-механические свойства сменных деталей металлургического оборудования за счет устранения поверхностных и внутренних дефектов структуры в сочетании с глубоким рафинированием по углероду, азоту и сере. 1 з.п.ф-лы, 3 табл., 5 ил.

ГАЗОПОГЛОТИТЕЛЬ

Изобретение относится к области термообработки, в частности к газопоглотителям, служащим для очистки от кислорода в воздушной среде печи термообрабатываемых в ней материалов, изделий и соответственно предотвращающих их окисление. Техническим результатом изобретения является повышение степени бесконтактной с газопоглотителем защиты от окисления изделий. Технический результат достигается применением отработанного твердосплавного режущего изделия для бурового инструмента, его отходов и некондиционных материалов в качестве высокотемпературного газопоглотителя кислорода защитного действия от окисления термообрабатываемых изделий, легко подвергаемых окислению. Газопоглотитель выполнен в виде многогранного изделия в форме блока или объемного многогранника из твердого сплава, содержащего композицию из карбида вольфрама с кобальтом. По сравнению с известными газопоглотителями применение твердосплавного режущего изделия значительно быстрей (в ~10-50 раз) защищает от окисления термообрабатываемые ...

СПОСОБ ТЕРМООБРАБОТКИ МЕТАЛЛИЧЕСКИХ ТРУБ (ВАРИАНТЫ)

Изобретение относится к способам термообработки на воздухе металлических изделий с внутренней полостью, например труб, профилей и других. Способ термообработки металлической трубы включает размещение трубы в нагревательной печи, нагрев при заданных температуре и времени термообработки и охлаждение на воздухе вне печи, при этом во внутренней полости трубы размещают полый вкладыш из кварца, керамики или фарфора с зазором относительно внутренней поверхности трубы и проводят термообработку с получением окисных защитных пленок и без образования окалины на внутренней поверхности трубы. В варианте способа во внутренней полости трубы размещают полый вкладыш из кварца, керамики или фарфора с зазором относительно внутренней поверхности трубы, наносят композицию для защитного покрытия на наружную поверхность трубы и проводят термообработку с получением окисных защитных пленок и без образования окалины на наружной и внутренней поверхностях трубы, при этом используют для защитного покрытия композицию ...

СПОСОБ ПОЛУЧЕНИЯ СТАЛЬНОЙ ДЕТАЛИ С ПОКРЫТИЕМ

Изобретение относится к способу получения стальной детали с покрытием. Способ включает следующие стадии: A) обеспечивают стальной лист для термообработки, на который заранее нанесено предварительное покрытие на основе алюминия; B) наносят предварительное покрытие толщиной от 10 до 550 нм, являющееся барьером для водорода, которое содержит по меньшей мере один элемент, выбранный из числа следующих: никель, хром, магний, алюминий и иттрий; C) отжигают стальной лист с предварительным покрытием в периодическом режиме для получения стального листа, покрытого сплавом в качестве предварительного покрытия, причем охлаждение после отжига в периодическом режиме осуществляют со скоростью 29,0°C⋅ч-1 или меньше; D) разрезают указанный стальной лист для получения заготовки; E. выполняют термообработку заготовки при температуре от 800 до 970°C в течение от 1 до 12 минут для получения полностью аустенитной микроструктуры в стали; F. переносят заготовку в прессовый штамп; G) выполняют горячее формование ...

УСТРОЙСТВО ДЛЯ УДАЛЕНИЯ МАСЛА, ПРЕДНАЗНАЧЕННОЕ ДЛЯ ОЧИСТКИ ТРУБ, СВЕРНУТЫХ БУХТАМИ

... 1. Устройство для удаления масла, предназначенное для очистки труб, свернутых бухтами (13), и имеющее печь, которая служит для нагрева помещаемых в нее труб и в которой предусмотрена или не предусмотрена соответствующая зона охлаждения, а также имеющее газопроводную систему (15, 16), предназначенную для подачи продувочного газа в трубы и соответственно его отвода из труб и снабженную средствами для разъемного герметичного соединения с газоподводящим трубопроводом (15) с одной стороны и газоотводящим трубопроводом (16) с другой стороны, отличающееся тем, что оба конца каждой трубы по отдельности подсоединены к одной и той же соединительной головке (4), которая имеет газовпускное отверстие (5) и расположенное на одной оси с ним газовыпускное отверстие (6), а концевой участок (7) газоподводящего трубопровода (15) и концевой участок (8) газоотводящего трубопровода (16) обращены навстречу друг другу и соединены с указанным газовпускным отверстием, соответственно газовыпускным отверстием герметичным ...

СПОСОБ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ЖАРОПРОЧНЫХ СТАЛЕЙ И СПЛАВОВ

Способ термической обработки жаропрочных сталей и сплавов, включающий нагрев в вакууме до температуры закалки и последующее охлаждение, отличающийся тем, что, с целью повышения физико-механических свойств за счет уменьшения сублимации легирующих элементов и интенсификации дегазации металла, нагрев до 800 - 1000oС проводят в вакууме 0,133 - 0,00133 Па (10-3 - 10-5 мм рт. ст. ), выдерживают при этих условиях в течение 10 - 60 мин, а дальнейший нагрев до температуры закалки осуществляют в вакууме 1,33 - 133 Па (10-2 - 1 мм рт.ст.) путем введения инертного газа.

Способ восстановительной термической обработки изделий из жаростойких хромоникелевых сталей

... 1. Способ восстановительной термической обработки изделий из жаростойких хромоникелевых сталей, включающий повторную аустенизацию с контролируемым охлаждением, отличающийся тем, что нагрев до 1000-1200°С со скоростью 15-30°С/ч, выдержку 5-40 ч и медленное охлаждение до 300-400°С со скоростью 20-50°С/ч осуществляют в среде глубокоочищенного и осушенного водорода с точкой росы не выше -50°С, а дальнейшее охлаждение проводят в безокислительной атмосфере с выдержкой 2-5 ч при температуре 300-400°C, и последующим охлаждением на воздухе. 2. Способ по п.1, отличающийся тем, что в процессе охлаждения производится дополнительная выдержка при 850-950°С в течение 3-6 ч.

СПОСОБ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ИЗДЕЛИЙ ИЗ ХИМИЧЕСКИ АКТИВНЫХ МАТЕРИАЛОВ

Изобретение относится к металлургии, в частности к термообработке изделий из химически активных материалов, и может быть использовано в авиационной и космической промышленности, судостроении, химическом машиностроении для получения особо чистых веществ и материалов. Решаемая техническая задача заключается в уменьшении газонасыщения изделий. Предложенный способ включает предварительное помещение изделий в контейнер, установленный в печи, напуск в контейнер инертного газа, нагрев до температуры термообработки, выдержку и охлаждение. Новым является то, что предварительно до напуска инертного осуществляют вакуумирование печи и контейнера, нагрев до температуры химической активности изделия, затем после напуска инертного газа осуществляют повторное вакуумирование, далее нагрев до температуры термообработки, выдержку и охлаждение, термообработку изделий осуществляют одновременно с циклами напуска инертного газа и вакуумирования.

СПОСОБ ПОВЫШЕНИЯ ЭКСПЛУАТАЦИОННЫХ СВОЙСТВ КОНСТРУКЦИОННЫХ МАТЕРИАЛОВ ПЕЧИ

Использование: в муфельных газонаполненных печах. Сущность: создание и поддержание нейтральной атмосферы в пространстве, занятом футеровкой печи внутри кожуха, путем подачи в кожух нейтрального по отношению к материалу футеровки газа, например азота. Вывод газа из кожуха объединяют с выводом газа из муфеля.

Способ закалки стали и чугуна

Способ эксплуатации печей с электронагревателями с контролируемой атмосферой

СПОСОБ ЭКСППУАТАЦЮ ПЕЧЕЙ С ЭЛЕКТРОНАГРЕВАТЕЛЯМИ С контрапи- (РУЕМОЙ АТМОСФЕРОЙ, включающий,.периодический прожиг рабочей камеры печи, отличающийся тем, что, с целью упрощения способа эксплуатации,измеряют напряженней силу тока в цепи каждого электронагревателя и при увеличении силы тока в цепи хотя бы одного электронагревателя на 3-10% по сравнению с номинальным током и при неизменном напряжении осуществляют прожиг. (Л ...

Карусельная электропечь с защитной атмосферой

Способ нагрева металлов и сплавов

Способ термической обработки деталей из нержавеющих аустенитных сталей

Способ безокислительного высокотемпературного нагрева стали

Установка для приготовления защитной атмосферы безокислительного нагрева

Установка для приготовления защитного газа для нагревательных печей

Способ повышения коррозийной стойкости изделий или полуфабрикатов из нержавеющих марок стали

Способ контроля магнитных свойств якорей микроэлектроклапанов

Изобретение относится к металлургии , конкретно к способам контроля магнитных свойств якорей микро- электроклаплнов из нержавеющих млг- ннтомягкнх сталей. Цель изобретения - сокращение трудоемкости, повышение технологичности при сохранении высокой точности определения коэрцитивной силы. Способ включает вакуумный отжиг, травление, измерение средней величины зерна и определение коэрцитивной силы по формуле Нс 24,88 + 1.32N - 6,69-10 zN - 1,48 , где N - среднее число зерен в 1 мм2. Способ позволяет существенно попыснть производительность контроля и точность измерения, улучшить стабильность рабочих характеристик микроклапанов. 1 з.п. ф-лы, 1 табл.

Способ термической обработки трансформаторной стали

Установка для термической обработки изделий в контролируемой атмосфере

Установка для получения защитной атмосферы

Печь для безокислительного нагрева

Способ изготовления инструмента

СПОСОБ ИЗГОТОВЛЕНИЯ ИНСТРУМЕНТА , преимущественно паяного с пластинами из твердого сплава, включающий заточку,вакуумную закалку путем нагрева до температуры закалки, вьщержку и охлаждение с регламентированной скоростью до 200°С и окончательную химико-термическую обработку в вакууме, отличающийс я тем, что, с целью повышения .износостойкости , твердости, прочности и жесткости инструмента, нагрев до. температуры закалки совмещают с пайкой , охлаждение до 200с производят со скоростью 45-65°С/с, заточку производят после закалки, а химико (Л термическую обработку осуществляют путем нитрооксидирования при 630680С .

Способ безокислительного нагрева изделий в пламенных печах

Способ термической обработки инструмента

Печь безокислительного нагрева металла

Способ отопления нагревательных печей

Способ изготовления биметаллических полых изделий цилиндрической формы

Аэродинамическое уплотнение рабочего окна печи безокислительного нагрева

Система получения и распределения эндогаза

Способ нагрева стальных изделий в печи

Изобретение относится к черной металлургии, к термообработке стали. Цель изобретения - повышение качества поверхностного слоя изделия за счет уменьшения толщины обезуглеро- женного слоя и уменьшения потерь металла в окалину при отжиге. Цель достигается тем, что в рабочем пространстве печи создают атмосферу, вклю- чаюшую продукты термического разложения железного купороса ( 7Н .0), причем железный купорос вводят в количестве 61-175 г на 1 м рабочего пространства печи при дополнительном введении в рабочее пространство печи особо чистого азота из расчета 1,2- 1,5 м /м рабочего пространства в 1 ч. Железный купорос может быть введен в рабочее пространство печи в виде порошка, 1 з.п. ф-лы, 3 табл. (Л ...

Установка для термообработки металлических материалов

Изобретение касается обо1 удова- ния для химико-термической обработки деталей из металлических материалов в регулируемой атмосфере. Цель изобретения - снижение расхода защитной атмосферы и упрощение обслуживания. Устройство для термообработки содержит расположенные в одну линию по крайней мере одну камерную нагревательную печь 1 с заслонкой 2, закалочную ванну 7, участок загрузки, механизм передачи обрабатьшаемого материала на технологические позиции установки и источник регулируемой атмосферы, соединенный с технологическими позициями установки. Механизм передачи обрабатываемого материала выполнен в виде манипулятора 8 с вильчатым захватом, заслонка 2 камерной печи 1, закалочная ванна 7 и вильчатый захват заключены в независимые защитные кожухи 3, 6, 10 с входными отверстиями 4, 5, 26 на боковой торцовой стороне, а в промежутках между участком загрузки, печью и ванной установлены отражательные плиты 14, имеющие вводы 17 регулируемой атмосферы и веерообразно расположенные раздающие трубки ...

Способ термической обработки изделий

СПОСОБ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ИЗДЕЛИЙ из легкоокисляющихся металлов и сплавов, включающий нагрев их в вакууме с последующим охлаждвнием в Зсшщтном газе, о т л и ч а ю щ и и с я тем, что, с целью повышения качества изделий путем исклю чения окисления и газонасыще ия их поверхности, в процессе охлаждения давление защитного газа увеличивают пропорционально снижению температуры изделий до атмосферного. (Л ...

Способ охлаждения рулонов стальной ленты в колпаковых печах

Сущность изобретения: способ включает подачу защитного газа через эжектор в подмуфельное пространство и его отвод , выдержку, после окончания которой газ из подмуфельного пространства в течение периода охлаждения направляют во внешний контур циркуляции, охлаждают до начальной температуры защитного газа, компримируют до давления 1500-1800 кгс/м и подают в смеситель эжектора, при этом давление смеси газов из внутреннего и внешнего контуров циркуляции на 5-15 кгс/М2 выше давления в печи, затем охлаждают рулоны.

Способ обработки нержавеющих сталей аустенитного и ферритного классов

Изобретение относится к области деформационной термической обработки стали и может быть использовано в черной металлургии при изготовлении труб. Цель изобретения - повышение жаропрочности,-термической устойчивости , упрочнения и улучшение качества поверхности путем уменьшения слоя окалины. Сущность изобретения заключается в том, что все операции нагрева и охлаждения стали осуществляют в защитной атмосфере, а ускоренное охлаждение производят сжиженным защитным газом до температуры (-80) -(190) С с последующим разогревом до комнатной температуры непосредственно перед пластической деформацией . В качестве сжиженного защитного газа применяется жидкий аммиак . 1 з.п. ф-лы, 1 табл.

Способ обезуглероживания листовой электротехнической стали

Способ регенерации защитнойАТМОСфЕРы B ТЕРМичЕСКОй пЕчи

Способ химико-термической обработки железокобальтовых сплавов

Способ эксплуатации электропечи с контролируемой углеродсодержащей атмосферой

Изобретение относится к химикотермической обработке металлов, а именно к электропечам с контролируемыми цементационными атмосферами. Цель изобретения - упрощение условий эксплуатации. Способ заключается в том, что в процессе эксплуатации электропечи в ее рабочем объеме наблюдается выделение сажи и с ростом накопления сажи, при рабочих равных условиях, для поддержания одного и того же углеродного потенциала необходим повьшенный расход углеводородной добавки (метана или пропан- бутана) . Для повышения надежности работы электропечи прожиг печи с целью выжигания сажи необходимо осуществлять при увеличении углеводородной добавки на 15-25% по сравнению с расходом углеводородной добавки, подаваемой после предыдущего прожига . 1 табл. S (Л ...

Способ нагрева деталей

Способ термической обработки сталей аустенитного и аустенитно-ферритного классов

Герметизирующее устройство контейнера для безокислительного нагрева изделий

Способ обработки сопрягаемых деталей из мартенситно-стареющих сталей

Эндо-экзогенератор

Способ одноступенчатой термической обработки листов из белого чугуна

Способ вакуумной термической обработки сталей

Способ подготовки поверхности чугунных изделий под эмалирование

Способ получения взрывобезопасной нейтральной защитной атмосферы

Способ улучшения обрабатываемости резанием сталей и сплавов

Печь для термообработки в контролируемой атмосфере

Способ получения безокислительной атмосферы

Способ обработки деталей

Способ отжига рулонов стального листа в колпаковых печах

Способ нагрева стали

Способ получения контролируемых атмосфер

Печь для непрерывной термической обработки металлической ленты

DREHRETORTENOFEN

VERFAHREN UND VORRICHTUNG ZUR VERMINDERUNG DER ZUNDERBILDUNG BEIM WARMUMFORMEN VON METALL, INSBESONDERE VON STAHL

VERFAHREN UND VORRICHTUNG ZUM REKRISTALLISATIONSGLUEHEN VON TOMBAKPLATTIERTEN NAEPFCHEN

Process for thermal treatment of metal strip reeled into coils

The invention relates to a process and a device for thermally treating metal strip reeled into coils, especially grain-oriented Si steel strip. In order to carry out the thermal treatment, one or more coils are placed on a movable base and enclosed by a hood which is sealed against the surrounding atmosphere and filled with protective gas. In order to heat and cool the coil(s) according to a predefined temperature curve, the base is moved through different temperature zones of a tunnel furnace. Prior to the base being moved into the tunnel furnace, the annealing chamber sealed by the protective hood is flushed with protective gas. During the movement through the tunnel furnace, the annealing chamber remains connected to a protective-gas source, in order to be able to set the desired composition of the protective-gas atmosphere in accordance with the temperature profile. ...

Wärmebehandlung von Metallerzeugnissen mit einer nicht entflammbaren Prozessatmosphäre

Eine verfahrenstechnische Änderung der Zusammensetzung der Prozessgasatmosphäre bei der Wärmebehandlung von Metallerzeugnissen (hier zum Beispiel Zahnräder eines Getriebes) in Wärmebehandlungsanlagen, dadurch gekennzeichnet,dassdie Zusammensetzung der Prozessgasatmosphäre für die gesamte Zeit der Wärmebehandlung aus Stickstoff (N2) besteht und der für den jeweiligen Wärmebehandlungsabschnitt benötigte Kohlenstoff (C), zu den Prozesszeitabschnitten der Notwendigkeit, der Prozessgasatmosphäre zugeführt wird.

Gassperre zum Trennen zweier Gasraeume in oder an Industrie- und Versuchsoefen

Nitrierofen.

Bright annealing steel sheet in furnace - contg steel turnings which cool before the sheet, and absorb any oxygen

In a process for bright annealing steel sheet or strip in a moving atmos. in a furnace, the sheet or strip is annealed with an oxidisable material (I) present in the colder part of the furnace, at least during the cooling of the furnace. Material (I) is pref. iron or steel, esp. iron or steel turnings, with a temp. 50-100 degrees C lower than the sheet or strip during the cooling cycle, i.e. the turnings cool first. The process is pref. undertaken in a furnace in which the inner wall is coated with material (I). Process for example, prevents the oxidn. and/or temper colours forming on the sheet which interferes with phostating.

Vorrichtung, um eine Seltenerdmetall-Legierung einem Hydrierungsverfahren zu unterziehen und Verfahren zur Herstellung eines Seltenerdmetall-Sintermagneten unter Verwendung der Vorrichtung

Oxygen removal from heat treatment furnaces - in which a protective atmosphere is maintained during operation

In a method for removing oxygen from receivers in heat treatment furnaces, the receiver is evacuated to a press. of 10-1 Torr whilst cold, and the protective gas is allowed to flow into the evacuated receiver. The method is quicker and requires less protective gas than oxygen displacement through purging with protective gas at atmospheric press., which may take 2 1/2 hours.

Verfahren zur Behandlung von wenigstens einem Teil aus weichmagnetischem verschleißfesten Teil und seine Verwendung

Wärmebehandlungsanlage

VERFAHREN UND VORRICHTUNG ZUR UEBERWACHUNG VON STROMSTARKEN GLIMMENTLADUNGEN

VERFAHREN FÜR DIE HERSTELLUNG EINER SKIKANTE

Verfahren nebst Gluehgefaess zum Blankgluehen

Verfahren zum Blankgluehen, insbesondere von schwer blankgluehbaren Metallen

Mit Schutzgas betriebener Gluehofen, insbesondere Blankgluehofen fuer ununterbrochenen Betrieb

KONTINUIERLICHES VERFAHREN, UM IN EINEM OFEN METALLISCHES MATERIAL ZU ERHITZEN

Verfahren und Vorrichtung fuer die Waermebehandlung von Metallgegenstaenden

Heat treatment furnace system - with multiaccess ante-chambers

In the furnace installation, which comprises one or two multi access gas tight antechambers fitted with turntables and conveyor connections the first ante chamber is connected to a tunnel furance at the end of which is provided a further antechamber for one or several heat treatment furnaces and/or an unloading table or a further tunnel furnace. The system provides max. flexibility in heat treatment plants.

GAS GENERATOR

... 1349799 Making combustible gas VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT ELEKTROTERMICHESKOGO OBORUDOVANIA 18 June 1971 [17 July 1970] 28639/71 Heading C5E A gas generator which simultaneously produces two different protective gases comprises a hermetically sealed container 1 enclosing a retort 4 and one or more burners 2, fuel-air mixtures being supplied at 2, 6. A portion of the hot gases from the burners 2 is passed out at 3 over a catalyst 20, the rest being directed as heating gases through a pipe 9 surrounded by catalyst 5 in the retort 4, from which product gas from the burner 6 leaves at 7. A portion of the gases at 3 is recycled through a cooler 11 and an adjustable valve 12 to one or more of the burners 2, and a valve 17 is controlled in response to variations in the temperature of the catalyst 5. The air fuel volume ratio to the burners 2 is less than 1.

Apparatus for Annealing Metallic Articles.

... 4188. Kreidler, A. Feb. 19. Annealing. - In annealing - apparatus of the kind in which articles are conveyed through an atmosphere of non-oxidizing gas, the conveyer f is made to describe a curve c inside the retort b, and both the feed and return portions of the conveyer move inside a common pipe e, or two adjacent pipes separated by a thin partition. One end d of the pipe e is connected to the retort while the other end is open, and the whole may slope in a straight line, the curve c being highest. Non-oxidizing gas is supplied through a pipe i.

ANNEALING FURNACE AND METHOD FOR ITS OPERATION

... 1394198 Continuous heat treatment furnaces ALLEGHENY LUDLUM INDUSTRIES Inc 15 Sept 1972 [17 Sept 1971] 27139/74 Divided out of 1394197 Heading F4B [Also in Division C7] The subject-matter of this Specification is substantially the same as that disclosed in Specification 1,394,197, but the claims are concerned with a method for heat treating strip material in coil form which comprises positioning a coil in vestibule means at the entrance end of an elongated furnace, sealing said vestibule means and purging the same of gaseous contaminants, thereafter transferring the coil from the vestibule means to the furnace and moving said coil from the entrance end of the furnace through successive heating and cooling zones of the furnace while circulating through said furnace a non-oxidizing gas, and finally removing the coil from the exit end of said furnace, said coil being heated within an initial furnace section and after it has been transferred into the furnace from the vestibule means while the ...

Improvements in, or relating to, continuous furnaces

... 695,624. Heat treatment furnaces. BIRLEC, Ltd., METAL & PLASTIC COMPACTS, Ltd., and WILSDON, S. C. Jan. 3, 1951 [Oct. 5, 1949]. No. 25561/49. Class 51(ii) A continuous heat treatment furnace of the type wherein the charge is enveloped in a protective gaseous atmosphere of an explosive nature supplied from an external source and comprising a heating chamber 1 and a cooling chamber 2, is supplied with atmosphere gas, e.g. cracked ammonia, from a main supply pipe 4 through a central branch pipe 6, control valve 7, and flowmeter 8 at the zone where the heating and cooling sections meet and is also supplied with the atmosphere gas to burners 15 in canopies 11 formed at each end of the furnace. Branch pipes 9 and 10 incorporating valves 16 and flowmeters 17 feed the burners 15 which are disposed below a screen 19' which may be made vertically adjustable, the said burners 15 projecting a curtain of flame across the work inlet and outlet openings in order to prevent the inadvertent admission of ...

FURNACE ATMOSPHERE MONITOR

If a gas supply sensor detects an excessively high oxygen concentration, a supply side interlocking means closes a valve for the pipe system and disconnects a power source for a furnace in a high pressure vessel. A flow switch is connected to a safety pipe system having a safety device, and a thermocouple is provided for each of the safety and processing gas pipe systems and a relief pipe system. When the flow switch detects processing gas being spouted from the safety pipe system and/or when one of temperature signals from the thermocouples exceeds a preset value, a relief side interlocking means closes the processing gas pipe system, opens the relief pipe system, stops a gas compressor and disconnects the power source. …… ...

Continuous annealing furnace, rolling bearing, annealing metho, and method of manufacturing inner and outer races of deeply groove ball bearing

A continuous annealing furnace wherein high carbon bearing steel is subjected to spheroidizing annealing continuously, characterized in that the furnace comprises not less than two processing chambers having mutually different carburizing gas atmospheres and connected together continuously, an intermediate chamber provided between these processing chambers and partitioned off therefrom via openable doors, and transfer means for transferring a material to be processed in the processing chambers and intermediate chamber; and an annealing method characterized in that an annealing process is carried out by using such a continuous annealing furnace. A rolling bearing characterized in that a maximum carburization rate and a carburized depth of a raceway surface of a complete product of the rolling bearing comprising high carbon bearing steel processed in the above-mentioned manner are 0.1-20% and 0.1-0.5 mm respectively.

Heat treatment atmosphere generator

... 234,779. Giesecke, F. May 30, 1924, [Convention date]. Annealing. - In a device for annealing, in which the annealing pot is surrounded by an inert gas during the cooling period, the gas is maintained at a particular vacuum in order that the annealed material will come into contact as little as possible with injurious gases. The pot a is supported in a container b provided with a cover c closed by a liquid seal formed by a liquid d in a trough e. A tank g in the trough e contains the liquid for producing the inert gas, this liquid passing through a container n having means to control the supply to a pipe h having a nozzle i arranged above an evaporating pan k and below a hood m. The container n is provided with a float p actuating a needle valve o, the liquid space of the container communicating with a pipe r into which the end of the pipe h projects. Liquid can only pass from the container n into the pipe h when the vacuum in the pipe is of such magnitude that the liquid in the pipe r ...

REDUCING VOLUME OF ATMOSPHERE INTO HEAT TREATMENT FURNACE

Improvements in or relating to the heat treatment of metal articles and apparatus therefor

... 390,570. Annealing. WELLMAN SMITH OWEN ENGINEERING CORPORATION, Ltd. and WEBB, A. W. OGILVY-, Victoria Station House, Victoria Street, London. Dec. 5, 1931, No. 33810. [Class 72.] In apparatus for annealing metal articles comprising a heating chamber 1 and a cooling chamber 3, waste gases are withdrawn from the chamber 1 at 13, cooled to any desired temperature in a device 21, and re-introduced by a fan 25 at points 33, 35 adjacent the junction of the heating and cooling chambers. The cooled gases delivered at 33 are preferably directed downwardly on to the articles, while those entering at 35 pass upwardly through the conveyer 7. An additional supply of waste gases is drawn by the fan 25 through a pipe 51 into the cooler 21 from a point 55 located towards the cooler end of the chamber 3, a valve in the withdrawal conduit 13 being preferably so set that the amount of gases withdrawn at 13 is only sufficient to make good leakage losses. To prevent entry of air through the outlet end 5 of ...

SAFETY INTERLOCKS FOR HOT ISOSTATIC PRESSURIZING EQUIPMENT

HEAT TREATMENT OF METALS

Improvements relating to batch-type controlled-atmosphere heat-treatment furnaces

... 910,741. Heat-treatment furnaces. EFCO FURNACES Ltd. Jan. 2, 1959 [Oct. 2, 1957], No. 30896/57. Class 51 (2). A gas or electrically fired radiant-tube horizontal batch-type furnace for the heat-treatment e.g. carburizing of metal workpieces in a suitable gaseous atmosphere of controlled composition and temperature comprises a purge chamber 1, Fig. 1, a main heating chamber 2 and a heated storage compartment 4 of L-shape which forms a holding chamber 22 and a lock chamber 24, Fig. 2, at right angles thereto having metal heatconducting walls. Pneumatically operated vertically sliding doors 3, 5, 13, 25, 26 maintain an endothermic gas mixture within the chambers which is introduced therein through pipes 30, 34 and circulated by fans 31, 35. The door 5 is gas tight to allow heating of the chamber 2 without effecting conditions in the compartment 4, and the exit doors 13, 26 have bleeder holes which allow the gas to escape to the outside air to ensure a continuous supply of fresh gas. A flame ...

IMPROVEMENTS IN OR RELATING TO CONTINUOUS CARBURISING

... 1,208,134. Continuous carburizing furnaces. GIBBONS BROS. Ltd. 18 March, 1968 [22 March, 1967], No. 13551/67. Heading F4B. [Also in Division C7] In a continuous carburizing furnace comprising a heating chamber 19, a carburizing chamber 20 and a diffusing chamber 21, work to be treated is transferred from the heating chamber 19 to the carburizing chamber 20 through interconnecting door means 45 when the furnace inlet door 34 and the outlet door 61 are both closed. The work is carried on trays which are in turn supported on trackways (see Figs. 3 and 5). Pushers 139, 41, 44, 55 and 60 are provided where shown to advance the work through the furnace. The heating and carburizing chambers are each provided with radiant tube burners and with roof fans (see Figs. 2 and 4). The work, on leaving the diffusing chamber 21 via outlet door 61, thereafter passes through a quench tank 11, a washer 12 and a tempering furnace 13. Energization of the pushers and of the interconnecting door means is controlled ...

APPARATUS FOR SEALING AN OPENING IN A CLOSED ATMOSPHERE CHAMBER

... 1317718 Furnace seals ALLEGHENY LUDLUM INDUSTRIES Inc 19 April 1971 [2 Feb 1970] 22150/71 Heading F4B The vestibule 4 of an annealing furnace 6 operating under a special atmosphere is provided with baffles 14 to each of which are loosely pivoted about a shaft 15 a row of substantially U-shaped baffles 18 each having two planar substantially triangular sides 22 joined by a partition 24, the sides 22 being so dimensioned that when one or more of the baffles is displaced by a workpiece W adjacent sides remain overlapping. The baffles 18 rest on supports 38 between driven rollers 20 making an angle A with the vertical and individual baffles are slightly wider than the workpieces. Liftplates (40, Fig. 2) attached to shaft 15 engage the baffles enabling all of them to be lifted by external rotation of said shaft. A heat shield 8 is disposed adjacent the furnace 6.

Improvements in or relating to the annealing and like heat treatment of metals

... 462,240. Annealing; annealing-boxes. GENERAL ELECTRIC CO., Ltd., HARLOW, E. C. G., and WILLIAMS, S. V. Aug. 29, 1935, No. 24162. [Class 72] Vessels for annealing or like heat-treatment of metals have walls so thin that they would collapse under the external pressure that would be generated by heating the vessel to the annealing temperature, sealing it and cooling it to atmospheric temperature, and are provided with a non-return valve to allow air to escape during heating, and with means comprising a tap to connect the vessels to a supply of inert or reducing gas during cooling. The vessel 1, of rectangular cross-sections and whose walls are too thin to support the plates to be annealed, is provided with an annular trough 2 filled with sealing liquid. A block 4 of refractory material is supported on the bottom of an iron lid 5 provided with a groove 6, and a projection 8 which is supported on a rubber washer 9 on a ledge 10 in the trough 2, the lid 4 being clamped to the trough by bolts ...

METHOD AND APPARATUS FOR ANNEALING SILICON STEEL

HOVER FURNACES

Method and apparatus for controlling a furnace pressure of a continuous annealing furnace

A method for controlling furnace pressure of a continuous annealing furnace is disclosed. The method comprises detecting a coal gas flow volume and an air flow volume in each section by use of a coal gas flow volume detector and an air flow volume detector disposed in each section of a continuous annealing furnace, respectively, adding up the coal gas flow volume detected in each section to obtain a total input coal gas flow volume; adding up the air flow volume detected in each section to obtain a total input air flow volume, and calculating a pre-combustion gas pressure in the furnace based on the total input coal gas flow volume and the total input air flow volume; detecting compositions of the coal gas and a ratio of the coal gas to the air by use of a composition detector; detecting a pre-combustion gas temperature in the furnace by use of a thermocouple; predicting post-combustion gas compositions and a total gas volume based on chemical combustion reaction equations and based on the total input coal gas flow volume, the total input air flow volume, the coal gas compositions and the ratio of the coal gas to the air; igniting the coal gas and the air in the furnace; and detecting a post-combustion gas temperature in the furnace by use of a thermocouple; calculating a post-combustion gas pressure in the furnace based on the pre-combustion gas pressure in the furnace, pre-combustion gas temperature in the furnace and the post-combustion gas temperature in the furnace; and calculating an opening degree for an exhaust gas fan based on the pre-combustion gas pressure in the furnace and the post-combustion gas pressure in the furnace and by use of a gas increment pass algorithm, and using the opening degree to control the exhaust gas fan.

Vapor-reinforced expanding volume of gas to minimize the contamination of products treated in a melting furnace

Systems and corresponding methods are described herein that provide an effective inert blanket over a metal surface (hot solid (charge) metal or molten metal) in a container such as an induction furnace. The system includes a container of metal and a system configured to delivery biphasic inert cryogen toward the metal. The delivery system may include a lance disposed at the top of the container. The lance has a hood that directs both a flow of liquid cryogen and a flow of vaporous gas toward the metal surface. The liquid cryogen contacts the metal surface, generating a volume of expanding gas over the metal surface. The vaporous cryogen creates a reinforcing vapor that slows the expansion rate of the expanding gas, localizing the expanding gas over the metal surface.

METHOD, FURNACE INSTALLATION AND SYSTEM FOR THE HOT STAMPING OF WORKPIECES

A system for the hot stamping of workpieces having a furnace installation, in which workpieces can be heated to a forming temperature, and a forming installation, in which the heated workpieces can undergo forming. A transfer device is provided for transferring workpieces from the furnace installation to the forming installation. The transfer device is arranged in a transfer space, which is delimited at least in certain regions by a housing and largely bridges the space between the furnace installation and the forming installation. Also provided is a method for the hot stamping of workpieces. 2. The system as claimed in claim 1 , wherein the housing comprises an access via which one or more workpieces can be introduced into the transfer space.3. The system as claimed in claim 2 , wherein the access is designed as an access lock claim 2 , by means of which the atmosphere of the transfer space remains separated from the surrounding atmosphere.4. The system as claimed in claim 1 , wherein a temperature lock region is formed between the furnace installation and the transfer device.5. The system as claimed in claim 4 , wherein the temperature lock region comprises a flow device claim 4 , by means of which a fluid flow curtain can be produced in front of the furnace installation.6. The system as claimed in claim 1 , wherein the housing comprises an outlet claim 1 , via which a workpiece removed from the furnace installation can be transferred to the forming installation and which can be closed or opened by means of a gate unit.7. The system as claimed in claim 1 , wherein the transfer device is designed as an articulated-arm robot.8. The system as claimed in claim 1 , wherein the transfer device is designed as a suspended system.9. The system as claimed in claim 1 , wherein one or more filler bodies are accommodated in the transfer space. The invention relates to a system for the hot stamping of workpieces, havingMoreover, the invention relates to a method for hot ...

STAINLESS STEEL FOIL AND METHOD OF PRODUCTION OF SAME

The present invention has as its object to provide thickness 60 μm or less ultra-thin stainless steel foil which secures high thickness precision and simultaneously secures plastic deformability and good elongation at break, that is, secures good press-formability (deep drawability). The present invention solves this problem by ultra-thin stainless steel foil which has three or more crystal grains in a thickness direction, has a recrystallization rate of 90% to 100%, and has a nitrogen concentration of a surface layer of 1.0 mass % or less. For this reason, there is provided a method of production of stainless steel foil comprising rolling stainless steel sheet, then performing final annealing and making a thickness 5 μm to 60 μm, wherein a rolling reduction ratio at rolling right before final annealing is 30% or more, a temperature of final annealing after rolling is 950° C. to 1050° C. in the case of austenitic stainless steel and 850° C. to 950° C. in the case of ferritic stainless steel, and a nitrogen content in atmospheric gas in final annealing is 0.1 vol % or less, whereby ultra-thin stainless steel foil can be produced. 1. Stainless steel foil with a thickness of 5 μm to 60 μm , which has three or more crystal grains in a thickness direction , has a recrystallization rate of 90% to 100% , and has a nitrogen concentration of a surface layer of 1.0 mass % or less.2. Stainless steel foil according to claim 1 , where said thickness is 5 μm to 40 μm.3. Stainless steel foil according to claim 1 , wherein a surface roughness Rz is 100 nm or more and 1/10 or less of the thickness.4. Stainless steel foil according to claim 1 , wherein an elongation at break is 10% or more.5. Stainless steel foil according to claim 1 , wherein said stainless steel foil is ferritic stainless steel.6. Stainless steel foil according to claim 1 , wherein said stainless steel foil is austenitic stainless steel.7. Ultra-thin stainless steel foil according to claim 1 , wherein at least one ...

ANNEALING LINE FOR A STEEL STRIP

An annealing line for a steel strip, a device for use in such an annealing line and a method for annealing a steel strip. The annealing line including a connecting chamber connecting a first heating section and a second heating section, wherein one or more devices, located in the connecting chamber, are arranged on one or both sides of the steel strip for oxidising the steel strip using an oxidising gas mixture, each device having a body including an internal chamber and one or more openings to project the oxidising gas mixture onto the surface of the steel strip. 1. An annealing line for a steel strip comprising a connecting chamber connecting a first heating section and a second heating section ,wherein one or more devices, located in the connecting chamber, are arranged on one or both sides of the steel strip for oxidising the steel strip using an oxidising gas mixture, each device having a body comprising an internal chamber and one or more openings to project the oxidising gas mixture onto the surface of the steel strip,wherein the internal chamber is divided into three or more compartments.2. The annealing line according to claim 1 , wherein three said compartments of the internal chamber comprises respectively a central compartment and a first pair of outer compartments claim 1 , each outer compartment is positioned adjacent to the central compartment.3. The annealing line according to claim 2 , wherein the internal chamber further comprises a second pair of outer compartments claim 2 , each outer compartment is positioned adjacent to the first pair of outer compartments.4. The annealing line according to claim 3 , wherein the internal chamber further comprises one or more additional pairs of outer compartments claim 3 , each outer compartment of each additional pair of outer compartments is positioned adjacent to an outer compartment of another pair of outer compartments.5. The annealing line according to claim 1 , wherein the device has an elongated shape.6 ...

COOLING METHOD AND DEVICE FOR COOLING A WIRE AND CORRESPONDING WIRE-PROCESSING INSTALLATION

Cooling device () for cooling a wire (), comprising a first chamber () and a second cooling chamber () through which the wire () passes. The device also comprises cooling liquid driving means () for driving the cooling liquid from the first chamber () to the second chamber () through at least one coding liquid inlet (). Through the driving means () and the cooling liquid inlet (), a jet of coding liquid is projected on the wire path at a mean speed of at least 0.6 m/s, and at a distance between 6 and 13 times the diameter of the wire (). Cooling is performed in an inert gas atmosphere inside the second chamber (). The invention also relates to a corresponding installation and a corresponding wire cooling method. 1. A cooling method for cooling a wire running along a wire path in a cooling device for cooling a wire , comprising:a first containing chamber for containing a cooling liquid, further comprising:a second cooling chamber comprising a wire inlet and a wire outlet arranged with respect to one another such that they define a wire path and at least one cooling liquid inlet and one cooling liquid outlet,cooling liquid driving means fluidically connecting said first and second chambers for driving said cooling liquid from said first chamber to said second chamber through said at least one cooling liquid inlet,said cooling liquid outlet furthermore extending into said first chamber, such that when said cooling device is in operation, the distal end of said cooling liquid outlet is submerged in the cooling liquid held in said first chamber,said driving means and the cross-section of said at least one cooling liquid inlet being dimensioned to project a jet of cooling liquid on said wire path, whereinthe device further comprises means for introducing inert gas, functionally associated with said second chamber to create an inert gas atmosphere inside said second chamber during the cooling of said wire, andthe method further comprises:a cooling liquid projection step, ...

ASSEMBLY COMPONENT

The present invention relates to an assembly component of an alloy based on iron, nickel and/or cobalt containing at least 10% (w/w) chromium, the assembly component having an annular shape with an inner surface and an outer surface and a thickness between the inner surface and the outer surface in the range of 0.1 mm to 5 mm, the alloy having a content of nitrogen in solid solution providing a microhardness in the range of 250 HVto 370 HVat a depth from the surface in the range of 0 μm to 100 μm. The invention also relates to an assembly with the assembly component. 1. An assembly component of an alloy based on iron , nickel and/or cobalt containing at least 10% (w/w) chromium , the assembly component having an annular shape with an inner surface and an outer surface and a thickness between the inner surface and the outer surface in the range of 0.1 mm to 5 mm , the alloy having a content of nitrogen in solid solution providing a microhardness in the range of 250 HVto 370 HVat a depth from the surface in the range of 0 μm to 100 μm.2. The assembly component according to claim 1 , wherein the microhardness is in the range of 280 HVto 320 HVat a depth from the surface in the range of 0 μm to 100 μm.3. The assembly component according to claim 1 , wherein the assembly component has an average microhardness in the range of 280 HVto 320 HVover the thickness of the assembly component as calculated from at least 5 microhardness measurements claim 1 , which at least 5 microhardness measurements deviate with up to 15% from the average hardness.4. The assembly component according to claim 1 , wherein the nitrogen content is in the range of 0.1% (w/w) to 0.8% (w/w) at a depth from the surface in the range of 0 μm to 100 μm.5. The assembly component according to claim 3 , wherein the nitrogen content is in the range of 0.1% (w/w) to 0.8% (w/w) over the thickness of the assembly component.6. The assembly component according to claim 5 , wherein the nitrogen content deviates ...

SEALING DEVICE

A sealing device is installed in heating treatment equipment through which a steel strip passes, the device including a rotary damper which is placed above the steel strip so as to be in contact with the steel strip, and a roll which is placed below the steel strip so that the roll opposes the rotary damper to form a pair consisting of the rotary damper and the roll opposing each other, the steel strip passing through a gap, which is formed between the rotary damper and the roll opposing each other, in which two pairs each of which is the pair consisting of the rotary damper and the roll opposing each other are arranged in tandem in a moving direction of the steel strip in the heating treatment equipment, and an inert gas is fed into a space defined by the two pairs arranged in tandem. 15-. (canceled)6. A sealing device installed in heating treatment equipment through which a steel strip passes , the device comprising:a rotary damper placed above the steel strip to be in contact with the steel strip; anda roll placed below the steel strip so that the roll opposes the rotary damper to form a pair consisting of the rotary damper and the roll opposing each other, the steel strip passing through a gap formed between the rotary damper and the roll opposing each other,wherein two pairs each of which is the pair consisting of the rotary damper and the roll opposing each other are arranged in tandem in a moving direction of the steel strip in the heating treatment equipment, and an inert gas is fed into a space defined by the two pairs arranged in tandem.7. The sealing device according to claim 6 , wherein the rotary damper has holes arranged in a width direction of the steel strip and through which the inert gas is sprayed onto the steel strip.8. The sealing device according to claim 6 , wherein a pressure of the inert gas in the space is 5 mmHO to 100 mmHO.9. The sealing device according to claim 6 , wherein the sealing device is placed in a CVD treatment furnace in the ...

POST-MANUFACTURING PROCESSES FOR SUBMERGED COMBUSTION BURNER

A portion of a submerged combustion burner is disposed into a pressure vessel. The portion of the submerged combustion burner has a welded area that has a first microstructure defined by a first number of voids. The vessel is filled with an inert gas, pressurized, and heated. Pressurizing and heating operations are performed for a time and at a temperature and a pressure sufficient to produce a second microstructure in the welded area of the burner. The second microstructure is defined by a second number of voids less than the first number of voids. 1. A method comprising:disposing at least a portion of a submerged combustion burner into a pressure vessel, wherein the portion of the submerged combustion burner has a first microstructure defined by a first number of voids;filling the vessel containing the portion of the submerged combustion burner with an inert gas;pressurizing the vessel containing the portion of the submerged combustion burner; andheating the vessel containing the portion of the submerged combustion burner, wherein the pressurizing and heating operations are performed for a time and at a temperature and a pressure sufficient to produce a second microstructure in the burner, wherein the second microstructure is defined by a second number of voids less than the first number of voids.2. The method of claim 1 , wherein the portion comprises at least one of a burner body claim 1 , a burner tip claim 1 , and a burner base claim 1 , and wherein the portion comprises a weld.3. The method of claim 1 , wherein the temperature is in a range from about 2200 degrees F. to about 3000 degrees F.4. The method of claim 3 , wherein the temperature is in a range from about 2450 degrees F. to about 2750 degrees F.5. The method of claim 4 , wherein the temperature is about 2600 degrees F.6. The method of claim 1 , wherein the time is in a range from about 100 minutes to about 1000 minutes.7. The method of claim 6 , wherein the time is in a range from about 200 minutes ...

SURFACE MODIFICATION APPARATUS FOR ALLOY STEEL COMPONENT, SURFACE MODIFICATION METHOD FOR ALLOY STEEL COMPONENT, AND METHOD FOR MANUFACTURING ALLOY STEEL COMPONENT

Provided are a surface modification apparatus for an alloy steel component, a surface modification method for an alloy steel component, and a method for manufacturing an alloy steel component, which can provide a deep and homogeneous hard layer for a steel component with a wide shape or a large amount of such steel components. A surface modification apparatus includes a process furnace , and the process furnace performs a surface modification process on an alloy steel component including an alloy steel material to which at least one kind of nitride formation element such as chromium, molybdenum, or aluminum is added. The surface modification apparatus forms a compound layer on a surface of the alloy steel component by exposing the alloy steel component for at least 180 minutes to an atmosphere in the process furnace maintained to have an ammonia gas concentration of 80% or more and a temperature of 620° C. 1. A surface modification apparatus for an alloy steel component , which performs surface modification on an alloy steel component including an alloy steel material containing a nitride formation element , the apparatus comprisinga surface modification processing unit for modifying a surface of the alloy steel component by exposing the alloy steel component for at least 180 minutes to an atmosphere with an ammonia gas concentration of 80% or more and a temperature of 610° C. or more and 630° C. or less.2. The surface modification apparatus for an alloy steel component according to claim 1 , wherein the temperature is set to 620° C. by the surface modification processing unit.3. The surface modification apparatus for an alloy steel component according to claim 1 , wherein the alloy steel component includes at least one of a corner portion with an acute shape and a hole portion with a diameter of 8 mm or less.4. A surface modification method for an alloy steel component including an alloy steel material containing a nitride formation element claim 1 , the method ...

HEAT TREATMENT APPARATUS, HEAT TREATMENT METHOD FOR STEEL WORKPIECE, AND HOT BENDING METHOD FOR STEEL WORKPIECE

A heat treatment apparatus of one aspect of the present disclosure includes: a feed device that feeds a heat treatment workpiece downstream in a feed direction along a heat treatment workpiece pass-line; a heating device that includes a heating coil disposed downstream of the feed device in the feed direction and encircling the pass-line; a cooling device that is disposed adjacent to the heating coil, downstream of the heating coil in the feed direction, and encircling the pass-line; and a gas supply device that is disposed upstream of the heating coil in the feed direction, directly connected to the heating coil and encircling the pass-line, and that includes a plurality of gas compartments configured by internally partitioning the gas supply device in the feed direction. 1. A heat treatment apparatus , comprising:a feed device that feeds a heat treatment workpiece downstream in a feed direction along a heat treatment workpiece pass-line;a heating device that includes a heating coil disposed downstream of the feed device in the feed direction and encircling the pass-line;a cooling device that is disposed adjacent to the heating coil, downstream of the heating coil in the feed direction, and encircling the pass-line; anda gas supply device that is disposed upstream of the heating coil in the feed direction, directly connected to the heating coil and encircling the pass-line, and that includes a plurality of gas compartments configured by internally partitioning the gas supply device in the feed direction.2. The heat treatment apparatus of claim 1 , wherein the heating coil includes two turns claim 1 , and a filler is disposed between neighboring portions of the heating coil in the feed direction such that there are no gaps between the neighboring portions.3. A heat treatment apparatus claim 1 , comprising:a feed device that feeds a heat treatment workpiece downstream in a feed direction along a heat treatment workpiece pass-line;a heating device that includes a two- ...

METHOD FOR PRODUCING POWDER FOR MAGNET

Provided are a method for producing powder for a magnet, and methods for producing a powder compact, a rare-earth-iron-based alloy material, and a rare-earth-iron-nitrogen-based alloy material. Magnetic particles constituting the powder each have a texture in which grains of a phase of a hydride of a rare-earth element are dispersed in a phase of an iron-containing material. The uniform presence of the phase of the iron-containing material in each magnetic particle results in powder having excellent formability, thereby providing a powder compact having high relative density. The powder is produced by heat-treating rare-earth-iron-based alloy powder in a hydrogen atmosphere to separate the rare-earth element and the iron-containing material and then forming a hydride of the rare-earth element. The powder is compacted. The powder compact is heat-treated in vacuum to form a rare-earth-iron-based alloy material. The rare-earth-iron-based alloy material is heat-treated in a nitrogen atmosphere to form a rare-earth-iron-nitrogen-based alloy material. 18-. (canceled)9. A method for producing a rare-earth-iron-nitrogen-based alloy material used for a rare-earth magnet , the method comprising:a preparation step of preparing an alloy powder composed of a rare-earth-iron-based alloy that contains a rare-earth element serving as an additional element;a hydrogenation step of heat-treating the rare-earth-iron-based alloy powder in a hydrogen element-containing atmosphere at a temperature equal to or higher than the disproportionation temperature of the rare-earth-iron-based alloy to form a powder for a magnet, wherein the powder is constituted by magnetic particles, each of the magnetic particles contains a hydride of a rare-earth element in an amount of less than 40% by volume and the balance being an iron-containing material that contains Fe, wherein a phase of the hydride of the rare-earth element is adjacent to a phase of the iron-containing material, and an interval between ...

SURFACE HARDENING OF CEMENTED CARBIDE BODY

A cemented carbide body includes WC in a metallic binder phase. The cemented carbide body has a bulk portion and a surface portion. The grain size of the WC in the surface portion is smaller than the grain size in the bulk portion of the body and this gives an increased surface hardness and an increased wear resistance. The median grain thickness, tg, of WC in the surface portion is 20-300 nm and the average grain size in the bulk portion is 0.5-8 μm. A method of surface hardening a cemented carbide body is also provided. 1. A body of cemented carbide , the cemented carbide including WC in a metallic binder phase , wherein the body comprises a bulk portion and a surface portion , the metallic binder phase content in the surface portion being 50-120 vol % of the metallic binder phase content in the bulk portion , and an average grain size of WC in the bulk portion being 0.5-8 μm , wherein a median grain thickness , tg , of WC in the surface portion is 20-300 nm.2. The body in accordance with claim 1 , wherein an average thickness of said surface portion as measured in a direction perpendicular from a surface of the body and towards the bulk portion is 0.5-20 μm.3. The body in accordance with wherein the WC content in the cemented carbide body is at least 60 wt %.4. The body in accordance with claim 1 , wherein the surface portion has plate-like and/or needle-like WC grains with a WC grain length claim 1 , lg.5. The body in accordance with claim 3 , wherein the ratio lg/tg of the plate-like and/or needle-like WC grains is >3.6. The body in accordance with claim 1 , wherein an extension of the surface portion at the surface of the body is at least 2 mm.7. The body in accordance with claim 1 , further comprising a wear resistant CVD coating and/or PVD coating.8. A method of making a surface hardening of a cemented carbide body comprising the steps of:providing a cemented carbide body of sintered cemented carbide having WC and a metallic binder phase, wherein said ...

PRECIPITATION HARDENING STEEL WITH IMPROVED TOUGHNESS AND METHOD

In some aspects, a heat treatment process is described for precipitation hardening steel. The heat treatment process can include a solution treatment for a precipitation hardening steel part. The solution treatment includes heating the precipitation hardening steel part to an austenitizing temperature. The heat treatment process can also include a quenching or cooling treatment, in which the precipitation hardening steel part is cooled to a martensitizing temperature. The heat treatment process can also include an aging treatment, in which the precipitation hardening steel part is heated to a temperature of 1000° F. and held at that temperature for five or more hours until a fracture toughness of the precipitation hardening steel part is greater than 120 ksi√in. 1. A heat treatment process for precipitation hardening steel comprising:a solution treatment for a precipitation hardening steel part, wherein the precipitation hardening steel part is heated in a furnace to an austenitizing temperature;a cooling treatment for a precipitation hardening steel part, wherein the precipitation hardening steel part is cooled to a martensitizing temperature of at least −100° F.; andan aging treatment for a precipitation hardening steel part, including heating the precipitation hardening steel part in a furnace at a temperature of at least 950° F. for at least 6 hours until a fracture toughness of the precipitation hardening steel part is greater than 120 ksi√in and until a yield strength is greater than 175 ksi.2. The heat treatment process of claim 1 , wherein the quenching treatment includes cooling the stainless steel part in a protective atmosphere.3. The heat treatment process of claim 1 , wherein the austenitizing temperature is a temperature of 1700° F.4. (canceled)5. The heat treatment process of claim 1 , wherein the temperature for the aging treatment is 1000° F. or greater.6. (canceled)7. The heat treatment process of claim 1 , wherein the aging treatment is for at ...

R-T-B BASED SINTERED MAGNET

An R-T-B based sintered magnet includes RTB crystal grains. A grain boundary formed by the two or more adjacent RTB crystal grains includes an R—N—O—C concentrated part having higher concentrations of “R”, N, O, and C than those in the RTB crystal grains. “R” of the R—N—O—C concentrated part includes Y. A ratio of Y atom to “R” atom in the R—N—O—C concentrated part is 0.65 or more and 1.00 or less. A ratio of O atom to “R” atom in the R—N—O—C concentrated part is more than 0 and 0.20 or less. A ratio of N atom to “R” atom in the R—N—O—C concentrated part is 0.03 or more and 0.15 or less. 1. An R-T-B based sintered magnet comprising RTB crystal grains , wherein{'sub': 2', '14', '2', '14, 'a grain boundary formed by the two or more adjacent RTB crystal grains includes an R—N—O—C concentrated part having higher concentrations of “R”, N, O, and C than those in the RTB crystal grains,'}“R” of the R—N—O—C concentrated part includes Y,a ratio of Y atom to “R” atom in the R—N—O—C concentrated part is 0.65 or more and 1.00 or less,a ratio of O atom to “R” atom in the R—N—O—C concentrated part is more than 0 and 0.20 or less, anda ratio of N atom to “R” atom in the R—N—O—C concentrated part is 0.03 or more and 0.15 or less.2. The R-T-B based sintered magnet according to claim 1 , wherein an area ratio of the R—N—O—C concentrated part occupied in an area of the grain boundary on a cut surface of the R-T-B based sintered magnet is 0.20 or more and 0.75 or less. 1. Field of the InventionThe present invention relates to an R-T-B based sintered magnet, and particularly relates to a magnet excellent in corrosion resistance.2. Description of the Related ArtR-T-B based sintered magnets containing a tetragonal RTB compound (“R” represents a rare earth element, “T” represents one kind transition metal element of Fe or two or more kind transition metal elements of Fe and other element(s), and “B” represents boron) as the main phase are known to exhibit excellent magnetic properties, and ...

STAINLESS STEEL RESISTANT TO DELAYED CRACKING AND A METHOD FOR ITS PRODUCTION

The invention relates to a stainless steel exhibiting transformation-induced plasticity (TRIP) effect resistant to delayed cracking and to the method for producing the stainless steel. The resistance to delayed cracking in the stainless steel is achieved limiting the total hydrogen content of the stainless steel measured by inert gas fusion method below 4 weight ppm, preferably below 3 weight ppm by a heat treatment performed at the temperature range between 100° C. and 700° C. for 0.1-300 hours, preferably at 200-600° C. for 1-100 hours, and more preferably at 250-500° C. for 1-100 hours. 1. Stainless steel exhibiting transformation-induced plasticity (TRIP) effect resistant to delayed cracking , characterized in that the resistance to delayed cracking for a flat stainless steel product is achieved limiting the total hydrogen content of the steel measured by inert gas fusion method below 4 weight ppm , by a heat treatment performed at the temperature range between 100° C. and 700° C. for 0.1-300 hours , preferably at 200-600° C. for 1-100 hours.2. Stainless steel exhibiting transformation-induced plasticity (TRIP) effect according to the claim 1 , characterized in that the stainless steel is an austenitic stainless steel containing in weight % 0-0.15% C claim 1 , 0-3% Si claim 1 , 0-15% Mn claim 1 , 10-30% Cr claim 1 , 0-8% Ni claim 1 , 0-3% Mo claim 1 , 0-3% Cu claim 1 , 0-0.5% N claim 1 , 0-0.5% Nb claim 1 , 0-0.5% Ti claim 1 , 0-0.5% V claim 1 , the balance of Fe and inevitable impurities including hydrogen.3. Stainless steel exhibiting transformation-induced plasticity (TRIP) effect according to the claim 1 , characterized in that the stainless stainless steel is a duplex austenitic-ferritic stainless steel whose microstructure contains 10-95% ferrite phase and which contains in weight % 0-0.10% C claim 1 , 0-2% Si claim 1 , 0-10% Mn claim 1 , 10-30% Cr claim 1 , 0-8% Ni claim 1 , 0-3% Mo claim 1 , 0-3% Cu claim 1 , 0-0.4% N claim 1 , 0-0.5% Nb claim 1 , 0-0.5% ...

MANUFACTURING METHOD FOR DEPOSITION MASK, METAL PLATE USED FOR PRODUCING DEPOSITION MASK, AND MANUFACTURING METHOD FOR SAID METAL SHEET

The present invention provides a metal sheet, on a first surface of which a resist pattern having a narrow width can be stably provided. This manufacturing method for a metal sheet includes a preparation step of preparing a sheet material comprising an iron alloy that contains nickel. When a composition analysis of the first surface of the metal sheet obtained from the sheet material is performed using X-ray photoelectron spectroscopy, the ratio A1/A2 obtained by the result of the X-ray photoelectron spectroscopy does not exceed 0.4, where A1 is the sum of the peak area value of nickel oxide and the peak area value of nickel hydroxide, and A2 is the sum of the peak area value of iron oxide and the peak area value of iron hydroxide. 1. A metal plate used for manufacturing a deposition mask having a plurality of through-holes formed therein ,whereinwhen a composition analysis of a first surface of the metal plate is performed by using an X-ray photoelectron spectroscopy, a ratio A1/A2 obtained by the result of the X-ray photoelectron spectroscopy is 0.4 or less, where A1 is a sum of a peak planar dimension value of nickel oxide and a peak planar dimension value of nickel hydroxide, and A2 is a sum of a peak planar dimension value of iron oxide and a peak planar dimension value of iron hydroxide; andin the composition analysis of the first surface of the metal plate by means of the X-ray photoelectron spectroscopy, an incident angle of an X-ray emitted to the metal plate on the first surface is 45 degrees, and an acceptance angle of photoelectrons discharged from the metal plate is 90 degrees.2. The metal plate according to claim 1 , wherein a thickness of the metal plate is 85 μm or less.3. The metal plate according to claim 1 , wherein a thickness of the metal plate is 20 μm or less.4. The metal plate according to claim 1 , whereinthe metal plate is for manufacturing the deposition mask by exposing and developing a dry film attached to the first surface of the metal ...

NI-BASE SUPERALLOY AND MANUFACTURING METHOD THEREOF

According to the present invention, a Ni-base superalloy is comprised 2.0 to 6.0 wt. % of cobalt (Co), 8.0 to 12.0 wt. % of chromium (Cr), 5.0 to 9.0 wt. % of tungsten (W), 3.5 to 6.0 wt. % of aluminum (Al), 3.0 wt. % or less of titanium (Ti), 5.0 to 10.0 wt. % of tantalum (Ta), 0.05 to 0.15 wt. % of carbon (C), 0.02 wt. % or less of boron (B), 0.05 wt. % or less of zirconium (Zr), with the remainder being composed of nickel (Ni) and unavoidable impurities. 1. A Ni-base superalloy comprising:2.0 to 6.0 wt. % of cobalt (Co), 8.0 to 12.0 wt. % of chromium (Cr), 5.0 to 9.0 wt. % of tungsten (W), 3.5 to 6.0 wt. % of aluminum (Al), 3.0 wt. % or less of titanium (Ti), 5.0 to 10.0 wt. % of tantalum (Ta), 0.05 to 0.15 wt. % of carbon (C), 0.02 wt. % or less of boron (B), 0.05 wt. % or less of zirconium (Zr), with the remainder being composed of nickel (Ni) and unavoidable impurities.2. A Ni-base superalloy comprising:4.0 wt. % of cobalt (Co), 10.0 wt. % of chromium (Cr), 7.0 wt. % of tungsten (W), 5.0 wt. % of aluminum (Al), 1.0 wt. % of titanium (Ti), 7.5 wt. % of tantalum (Ta), 0.07 wt. % of carbon (C), 0.015 wt. % of boron (B), 0.01 wt. % of zirconium (Zr), with the remainder being composed of nickel (Ni) and unavoidable impurities.3. The Ni-base superalloy of claim 1 ,{'sub': 23', '6', '6, 'wherein the Ni-base superalloy has MC- and MC-type precipitates at a grain boundary, and uniformly distributed γ′ precipitates of 0.3 to 0.4 μm in average size within a γ matrix.'}4. The Ni-base superalloy of claim 3 ,wherein the Ni-base superalloy has a creep life of 600 hours or more under the creep conditions of 871° C./310 MPa.5. The Ni-base superalloy of claim 3 ,wherein the Ni-base superalloy has a creep life of 150 hours or more under the creep conditions of 982° C./187 MPa.6. The Ni-base superalloy of claim 3 ,{'sup': '2', 'wherein the Ni-base superalloy has a change in weight of 10 mg/cmor less when an cyclic oxidation test, in which the Ni-base superalloy is kept at 1100° C ...

HEAT TREATMENT APPARATUS FOR CYLINDER BLOCK AND HEAT TREATMENT METHOD FOR CYLINDER BLOCK

A heat treatment apparatus for a cylinder block, performs heat treatment by feeding gas. The heat treatment apparatus comprises a first feed part configured to feed the gas toward bores of the cylinder block, from a first side or a second side of the bores in an axis direction of the bores. 1. A heat treatment apparatus for a cylinder block , the heat treatment apparatus performing heat treatment by feeding gas , the heat treatment apparatus comprising:a first feed part configured to feed the gas toward bores of the cylinder block, from a first side or a second side of the bores in an axis direction of the bores.2. The heat treatment apparatus according to claim 1 , further comprising a second feed part configured to feed the gas toward a lateral surface of the cylinder block from the first side or the second side claim 1 , the lateral surface of the cylinder block extending in an array direction of the bores.3. The heat treatment apparatus according to claim 2 , wherein:the first feed part includes a first feed hole that is a jet orifice for the gas;the second feed part includes a second feed hole that is a jet orifice for the gas; andat least one of the first feed hole and the second feed hole is a slit along the array direction the bores of the cylinder block.4. The heat treatment apparatus according to claim 3 , wherein:the cylinder block includes a plurality of cylinder blocks; andthe first feed hole and the second feed hole are longer in the array direction of the bores than a cylinder block that is of the cylinder blocks to be subjected to the heat treatment and that has the longest length in the array direction of the bores.5. The heat treatment apparatus for the cylinder block according to claim 3 , wherein:the cylinder block includes a plurality of cylinder blocks;the second feed hole is arranged, with respect to a predetermined direction perpendicular to the axis direction and the array direction of the bores, outside both lateral surfaces of a cylinder ...

STAINLESS STEEL FOIL

The present invention provide a ferritic stainless steel foil having a high thickness precision even with a thickness 60 μm or less ultrathin stainless steel foil and simultaneously having a plastic deformation ability and good elongation at break, that is, having a good press-formability (deep drawing ability). 1. A stainless steel foil having a thickness of 5 μm to 60 μm , wherein a recrystallization ratio of said stainless steel foil is 90% to 100% ,a surface layer of said stainless steel foil has a nitrogen concentration of 1.0 mass % or less,three or more crystal grains are contained in the thickness direction of said stainless steel foil, an average crystal grain diameter “d” of said crystal grains is 1 μm to 10 μm, and,when said thickness is “t” (μm), an area ratio of crystal grains having a crystal grain diameter of t/3 (μm) or more is 20% or less.2. The stainless steel foil according to claim 1 , wherein said thickness is 5 μm to 25 μm.3. The stainless steel foil according to claim 1 , wherein a surface roughness Rz is 100 nm or more claim 1 , and 1/10 or less of the thickness.4. The stainless steel foil according to claim 1 , wherein an elongation at break is 10% or more.5. The stainless steel foil according to claim 1 , wherein said stainless steel foil is ferritic stainless steel foil.6. The stainless steel foil according to claim 1 , wherein said stainless steel foil is austenitic stainless steel foil.7. The stainless steel foil according to claim 1 , wherein a resin film is laminated on at least one surface of said stainless steel foil.8. The stainless steel foil according to claim 2 , wherein a surface roughness Rz is 100 nm or more claim 2 , and 1/10 or less of the thickness.9. The stainless steel foil according to claim 2 , wherein an elongation at break is 10% or more.10. The stainless steel foil according to claim 3 , wherein an elongation at break is 10% or more.11. The stainless steel foil according to claim 2 , wherein said stainless steel foil ...

CONCURRENT FLOW OF ACTIVATING GAS IN LOW TEMPERATURE CARBURIZATION

Low temperature gas carburization of stainless steel using acetylene as the carburizing specie is carried out under soft vacuum conditions in the presence of hydrogen or other companion gas. Carburization is made to go faster by including HCl or other carbon-free, halogen-containing activating compound in the carburizing gas being fed to the carburization reactor. 1. A process for surface hardening a workpiece made from an iron , nickel and/or chromium based alloy by gas carburization in which an unsaturated hydrocarbon is contacted with the workpiece inside a carburization reactor under a pressure of about 3.5 to 100 torr and at an elevated carburization temperature to cause carbon to diffuse into the workpiece surfaces thereby forming a hardened primary surface layer which is essentially free of carbide precipitates as well as a thermal oxide film , the process further comprising increasing the rate at which carburization occurs by feeding a carbon-free , halogen-containing activating compound to the carburization reactor simultaneously with feeding the unsaturated hydrocarbon to the carburization reactor , wherein the concentration of the of the unsaturated hydrocarbon inside the carburization reactor is about 8 to 35 vol. % and the concentration of the carbon-free , halogen-containing activating compound inside the carburization reactor is about 0.5 to 3 vol. %.2. The process of claim 1 , wherein the carbon-free claim 1 , halogen-containing activating compound is HF claim 1 , HCl claim 1 , NF claim 1 , F claim 1 , Clor a mixture thereof.3. The process of claim 2 , wherein the workpiece is made from stainless steel and further wherein claim 2 , prior to contact of the workpiece with the unsaturated hydrocarbon claim 2 , the workpiece is not activated to remove the coherent claim 2 , impervious layer of chromium oxide which inherently forms on the surface of the steel.4. The process of claim 3 , wherein the workpiece is made from an AISI 300 or 400 series ...

Method of carburizing

A method of carburizing ferrous metal parts that includes the steps of providing a furnace for heating the metal parts and a process chamber, purging the air atmosphere from the process chamber and heating said process chamber to a temperature of at least 1100° F., feeding a gas to the process chamber and a source of air at a constant flow rate to the process chamber, boosting the process chamber by feeding an enriching gas to the process chamber to create a carbon potential of at least 0.5%, and more preferably of at least 1.4%, cleaning the process chamber by decreasing the flow of enriching gas to the process chamber to create a carbon potential of less than about 0.25%, repeating the boosting step after performing said cleaning step, and repeating the cleaning step after performing said boosting step.

HEAT TREATMENT METHOD AND METHOD OF MANUFACTURING MACHINE PART

A heat treatment method includes the steps of: measuring a hot section temperature; measuring a cold section temperature; adjusting a temperature of a workpiece; and determining quenching timing for the workpiece. The step of adjusting a temperature includes the steps of: heating the workpiece by high energy heating; and controlling heating based on the hot section temperature. In the step of determining quenching timing, the quenching timing is determined based on the hot section temperature and the cold section temperature so as to achieve a predetermined solid-dissolved state of carbon on a TTA diagram in the entire workpiece. The TTA diagram is derived by a calculation formula obtained by conducting a regression analysis of a result of an experiment performed for examining a relation between the solid-dissolved state of carbon and each of a heating temperature and a heating time of steel. 1. A high-energy heat treatment method of heating a surface layer of a workpiece made of steel for implementing quench-hardening , said heat treatment method comprising the steps of:measuring a hot section temperature corresponding to a temperature of a portion in which the temperature rises most in said workpiece;measuring a cold section temperature corresponding to a temperature of a portion in which the temperature rises least in said workpiece;adjusting the temperature of said workpiece; anddetermining quenching timing for said workpiece, heating said workpiece by high energy heating, and', 'controlling heating of said workpiece by said high energy heating based on said hot section temperature,, 'said step of adjusting the temperature of said workpiece including the steps of'}in said step of determining quenching timing for said workpiece,said quenching timing being determined based on said hot section temperature and said cold section temperature such that said steel forming said workpiece exhibits a predetermined solid-dissolved state of carbon on a TTA diagram in entire ...

COMPACTING OF GAS ATOMIZED METAL POWDER TO A PART

A process for making full dense components of a carbon-containing steel, comprises the steps of: a) making a powder of the carbon-containing steel by gas atomization wherein the carbon content is low, less than 0.15 wt %, b) agglomerating the powder from step a) with at least one hydrocolloid and elemental carbon, c) compacting the agglomerated powder from step b) to a density of at least 80% of theoretical density, with the proviso that the compacted agglomerated powder still is porous allowing transport of gas to and from its interior, and d) sintering the compacted powder to a density of more than 98% of theoretical density, preferably more than 99% of theoretical density, wherein a gas comprising carbon is added during sintering and finally subjecting the component to HVC. Advantages include that it is possible to manufacture a dense component of powders which otherwise are difficult to compact. 1. A process for making full dense components with a density of more than 98% , of the theoretical density of a material selected from the group consisting of a carbon-containing steel and a carbon containing alloy , said process comprising the steps of:a) making a powder of the carbon-containing steel by gas atomization, wherein the carbon content is less than 0.15 wt %,b) agglomerating the powder from step a) with at least one hydrocolloid, wherein carbon in elemental form is added in the form of a colloid of insoluble particles comprising carbon suspended throughout a liquid, during the agglomeration,c) compacting the agglomerated powder from step b) in a first compacting step to a density of at least 80% of theoretical density, with the proviso that the compacted agglomerated powder still is porous allowing transport of gas to and from its interior,d) further compacting the compacted agglomerated powder from step c) to a density of more than 98% of theoretical density using at least sintering followed by HVC (high velocity compacting) with a ram speed exceeding 5 m/s ...

Patent DE9108520U1

Method and device for heat treating metallic workpieces

Method and device of pressure control in continuous annealing furnace

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy. The procedure consists of the following stages: flowrate of coal gas and air is determined in each section using flowrate transmitter of coal gas and air flowrate transmitter. Coal gas and air flowrates are summed to determine total input flowrate. Pressure in furnace is calculated before combustion based on the total input flowrate of the coal gas and total input flowrate of air. The following is determined: coal gas components, ratio between coal gas and air, gas temperature in furnace before combustion using thermocouple. Gas components after combustion and total gas volume are predicted based on equations of the chemical reactions of combustion, and input flowrates of the coal gas and air, the coal gas components, and ration between the coal gas and air. Gas temperature in furnace after combustion is determined, and gas pressure in furnace after combustion is calculated based on the gas pressure in the furnace before combustion, gas temperature before combustion, and gas temperature after combustion. Degree of spent gas fan opening is determined based on the gas pressure in the furnace before combustion, and gas pressure in furnace after combustion is calculated, and this degree is used to control spent gas fan. EFFECT: enhanced control quality. 6 cl, 5 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 553 783 C2 (51) МПК C21D 11/00 (2006.01) C21D 9/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013123985/02, 14.04.2011 (24) Дата начала отсчета срока действия патента: 14.04.2011 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 10.12.2014 Бюл. № 34 (45) Опубликовано: 20.06.2015 Бюл. № 17 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 27.05.2013 (86) Заявка PCT: CN 2011/072769 (14.04.2011) (87) Публикация заявки PCT: 2 5 5 3 7 8 3 (56) Список документов, цитированных в отчете о поиске: (см. прод ...

一种低碳合金钢的真空渗碳工艺

本发明公开了一种低碳合金钢的真空渗碳工艺，采用脉冲式真空渗碳设备进行渗碳，包括下述的步骤：S1.将低碳合金钢加热到900±5℃进行均热；S2.在均热温度下，进行第一段渗碳、扩散和第二段渗碳，然后升温到920±5℃进行第二段扩散；第一段渗碳、扩散时间分别为42‑50分钟与115‑122分钟，第二段渗碳时间60‑70分钟，第二段扩散时间160‑200分钟，第一段渗碳和第二段渗碳采用脉冲式通入渗碳剂；S3.降温到830±5℃，在保温后进行淬火。采用本发明的工艺，在热处理后表面无氧化、碳化物1‑2级，从而实现产品避免后续断裂及开裂的风险，提升产品的使用寿命。

对稀土合金进行氢化处理的装置和利用该装置制造稀土烧结磁体的方法

一种对稀土合金块进行氢化处理的装置，它包括外壳、气体入口和气体出口、用于产生气流而设置的部件和防风板。该外壳限定一个容纳容器的内部空间。容器包括一个上开口并且其中存有稀土合金块。通过气体入口将氢气和惰性气体引入内部空间并且通过气体出口将其从内部空间排出。例如通过风扇在内部空间产生气流。将防风板置于内部空间产生气流的上游，并且该防风板使容器的上开口附近产生的气流流速减小。

Способ изготовления горячеплакированных изделий из тонкой стальной полосы непосредственно из расплавленной стали без травления

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2016 152 000 A (51) МПК C21D 1/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2016152000, 23.12.2014 (71) Заявитель(и): БАОШАН АЙРОН ЭНД СТИЛ КО., ЛТД. (CN) Приоритет(ы): (30) Конвенционный приоритет: 30.05.2014 CN CN 201410240643.3; 30.05.2014 CN CN 201410240632.5 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 30.12.2016 CN 2014/094611 (23.12.2014) (87) Публикация заявки PCT: WO 2015/180462 (03.12.2015) A Адрес для переписки: 192007, Санкт-Петербург, а/я 146, ООО "АИС поли-ИНФОРМ-патент" R U (57) Формула изобретения 1. Способ изготовления горячеплакированных изделий из тонкой стальной полосы непосредственно из расплавленной стали без травления, включающий выплавку и рафинирование для получения рафинированной расплавленной стали, непрерывное литье тонкой стальной полосы, низкий отжиг, нанесение покрытия горячим способом, при этом: - на стадии непрерывного литья тонкой стальной полосы рафинированную расплавленную сталь заливают из сталеразливочного ковша через разливочное устройство в двухвалковую литейную установку, при этом под охлаждающим действием валков литейной установки сталь остывает и затвердевает в виде заготовки стальной полосы, причем процесс литья заготовки осуществляют в закрытой плавильной печи в среде смешанного газа, представляющего собой смесь инертного и восстановительного газа, при этом на поверхности заготовки стальной полосы образуется пленка из окислов железа; - на стадии низкого отжига отлитую заготовку стальной полосы направляют в печь низкого отжига, в которую также вводят смешанный газ, представляющий собой смесь инертного и восстановительного газа, при этом происходит восстановление пленки окислов железа в железистый металл; - на стадии нанесения покрытия горячим способом литую стальную полосу после Стр.: 1 A 2 0 1 6 1 5 2 0 0 0 (54) СПОСОБ ИЗГОТОВЛЕНИЯ ГОРЯЧЕПЛАКИРОВАННЫХ ИЗДЕЛИЙ ИЗ ТОНКОЙ СТАЛЬНОЙ ПОЛОСЫ НЕПОСРЕДСТВЕННО ...

Способ и устройство управления давлением в печи отжига непрерывного действия

1. Способ управления давлением в печи отжига непрерывного действия, отличающийся тем, что включает следующие стадии:определяют расход каменноугольного газа и расход воздуха в каждой секции с использованием датчика расхода каменноугольного газа и датчика расхода воздуха, расположенных в каждой секции печи отжига непрерывного действия соответственно, складывают расход каменноугольного газа, определенного в каждой секции, чтобы получить общий входной расход каменноугольного газа, складывают расход воздуха, определенный в каждой секции, чтобы получить общий входной расход воздуха, и вычисляют давление в печи до сгорания, исходя из общего входного расхода каменноугольного газа и общего входного расхода воздуха;определяют составляющие каменноугольного газа и соотношение каменноугольного газа к воздуху с использованием детектора составляющих;определяют температуру газа в печи перед сгоранием с использованием термопары;прогнозируют составляющие газа после сгорания и общий объем газа, исходя из уравнений химической реакции горения и исходя из общего входного расхода каменноугольного газа, общего входного расхода воздуха, составляющих каменноугольного газа и соотношения каменноугольного газа к воздуху;воспламеняют каменноугольный газ и воздух в печи и определяют температуру газа в печи после сгорания с использованием термопары;вычисляют давление газа в печи после сгорания, исходя из давления газа в печи до сгорания, температуры газа в печи до сгорания и температуры газа в печи после сгорания; ивычисляют степень открытия вентилятора отработанного газа, исходя из давления газа в печи до сгорания и дав РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК C21D 9/00 (13) 2013 123 985 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013123985/02, 14.04.2011 (71) Заявитель(и): БАОШАНЬ АЙРОН ЭНД СТИЛ КО., ЛТД. (CN) Приоритет(ы): (30) Конвенционный приоритет: 26.10.2010 CN 201010519941.8 (85) Дата начала рассмотрения заявки PCT на ...

Absorption type wire grid polarizer having a excellent durability and manufacturing method thereof

본 발명은, 광 흡수형 물질로 이루어진 선 격자 패턴으로 이루어진 편광 분리층을 포함하고, 상기 편광 분리층에 200mW 세기의 자외선을 3시간 이상 조사한 후에 측정한 편광비 감소율이 20% 이하인 흡수형 선 격자 편광판 및 그 제조 방법에 관한 것이다. The present invention relates to a polarizing plate comprising a polarized light separating layer made of a line grating pattern made of a light absorbing material and having a polarizing loss reduction ratio of 20% or less measured after irradiating the polarized light separating layer with ultraviolet rays of 200 mW intensity for 3 hours or more, A polarizing plate and a method of manufacturing the same.

Method of making metal strips and production line to this end

FIELD: process engineering. SUBSTANCE: proposed method comprises heat treatment of cast rough strip, rolling, coiling or piling. Flexible production of preset-quality strips suitable for transportation or storage comprises subjecting cast rough strip to effects of protective gas atmosphere during first annealing by maintaining temperature of 900-1000°C, reducing temperature by 200°C or increasing temperature by 250°C. After first homogenisation, it is subjected to the other heat treatment by maintaining temperature of 880-940°C to be reduced by 50°C or increased by 50°C. Then, it is subjected to hot rolling with reduction lower than 49%. Then, the strip is subjected to second homogenisation at specified conditions. Now, it is fed via separator synchronised with transfer speed to separate hot-rolled strip from rough strip. Proposed production line incorporated appropriate equipment. EFFECT: higher quality of rolled stock. 14 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 481 903 (13) C2 (51) МПК B21B 1/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011128420/02, 09.12.2009 (24) Дата начала отсчета срока действия патента: 09.12.2009 (73) Патентообладатель(и): СМС ЗИМАГ АГ (DE) R U Приоритет(ы): (30) Конвенционный приоритет: 09.12.2008 DE 102008061206.5 08.07.2009 DE 102009032358.9 (72) Автор(ы): ФРАНЦ Рольф (DE), ШПИТЦЕР Карл-Хайнц (DE), АЙХХОЛЬЦ Хелльфрид (DE), ШЕПЕРКЕТЕР Маркус (DE) (43) Дата публикации заявки: 20.01.2013 Бюл. № 2 2 4 8 1 9 0 3 (45) Опубликовано: 20.05.2013 Бюл. № 14 (56) Список документов, цитированных в отчете о поиске: WO 2006066551 A1, 29.06.2006. RU 2138344 C1, 27.09.1999. SU 1839682 A3, 30.12.1993. RU 2234542 C2, 20.08.2004. 2 4 8 1 9 0 3 R U (86) Заявка PCT: EP 2009/008795 (09.12.2009) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.07.2011 (87) Публикация заявки РСТ: WO 2010/066412 (17.06.2010) Адрес для переписки: 129090, Москва, ул. Б. ...

Device for removing particle in vertical furnace

본 발명의 수직 소둔로 내의 이물질 제거장치는 스트립을 고온의 환원 분위기로 열처리 하는 상하 방향으로 길게 형성되는 가열대와, 상하 방향으로 길게 형성되어 상기 가열대의 내부에 설치되고 외부가 연소가스에 의해 가열되는 머플을 포함하는 수직 소둔로에 있어서, 상기 스트립이 관통되는 관통부를 포함하며, 상기 머플의 상부 및 하부에 설치되는 상부 플러그 및 하부 플러그; 및 상기 관통부의 양측면에 배치되며, 이물질이 상기 관통부로 낙하되도록 하는 제1 스프레이 헤드가 구비되는 이물질 제거부를 포함하는 것을 특징으로 한다. 본 발명에 따르면 머플의 상부 플러그 및 아웃 플러그에 낙하하는 이물질을 제거함으로써 이물질로 인한 제품의 품질 저하를 방지하고, 제품의 생산 도중에 이물질 제거 작업을 손쉽게 수행할 수 있는 효과가 있다. The apparatus for removing foreign substances in a vertical annealing furnace according to the present invention comprises a heating stand formed to be long in the vertical direction for heat treating the strip in a high temperature reducing atmosphere, A vertical annealing furnace comprising a muffle, comprising: an upper plug and a lower plug which are provided at upper and lower portions of the muffle, including penetrations through which the strip passes; And a foreign matter removing unit disposed on both sides of the penetrating unit and having a first spray head for allowing foreign matter to fall down to the penetrating unit. According to the present invention, it is possible to prevent deterioration of product quality due to foreign matter by removing foreign substances falling on the upper plug and the out plug of the muffle, and to perform the foreign matter removal operation easily during production of the product.

Manufacturing method of high magnetic flux density oriented electrical steel with excellent magnetic and coating properties

이 발명은 상자소둔로 없이도 안정적인 억제제를 형성시켜 자기특성과 피막특성이 양호한 방향성 전기강판을 제조하게 하려는 것이다. 이 발명에 따른 방향성 전기강판의 제조방법은 방향성 전기강판의 슬랩을 1,250℃이하의 저온에서 재가열하고 열간압연한 후, 열연판소둔을 행한 다음, 냉간압연하여 최종판 두께를 얻으며, 탈탄 및 질화에 의해 질소를 강 속에 넣고, 고온하에서 최종소둔하는 단계를 포함하며, 최종소둔단계에 진입하기 전에 소량의 Si 3 N 4 가 혼입된 MgO 슬러리를 강판에 도포하고, 최종소둔단계는 100% 수소분위기에서 행한다. 전기강판 슬랩은 0.1 중량% 이하의 C와, 1.0-4.8 중량%의 Si와, 0.010-0.05 중량%의 Al과, 0.05-2.0 중량%의 Mn과, 100ppm 이하의 N와, 0.01 중량%의 S 및, 잔부를 이루는 Fe 및 불가피한 불순물을 함유한다. 전기강판 슬랩에는 Cu, Cr 및 Ni이 함유됨으로써 최종적으로 AlN계통의 질화물을 억제제로 이용하거나, 또는, B가 함유됨으로써 BN를 억제제로 이용할 수 있다. The present invention is to produce a grain-oriented electrical steel sheet having good magnetic properties and coating properties by forming a stable inhibitor without the box annealing furnace. In the method for manufacturing a grain-oriented electrical steel sheet according to the present invention, the slab of the grain-oriented electrical steel sheet is reheated at a low temperature of 1,250 ° C. or lower, hot rolled, and then hot-rolled sheet is annealed, and then cold-rolled to obtain a final sheet thickness, by decarburization and nitriding. Nitrogen is introduced into the steel, and the final annealing is carried out at a high temperature. Before entering the final annealing step, a small amount of Si 3 N 4 mixed MgO slurry is applied to the steel sheet, and the final annealing step is performed in a 100% hydrogen atmosphere. . Electrical steel slab is 0.1 wt% or less of C, 1.0-4.8 wt% of Si, 0.010-0.05 wt% of Al, 0.05-2.0 wt% of Mn, 100 ppm or less of N, and 0.01 wt% of S And Fe, which forms the remainder, and unavoidable impurities. Cu, Cr, and Ni are contained in the electrical steel slab to finally use an AlN-based nitride as an inhibitor, or, by containing B, BN can be used as an inhibitor.

Verfahren und Vorrichtung zum Abdichten von Kuehlbehaeltern zum Blankgluehen von Draht o. dgl. mittels Tauchverschlusses

Method and furnace for heat processing of high-strength steel strip containing temperature homogenization chamber

FIELD: heat engineering. SUBSTANCE: invention relates to the heat processing of a high-strength steel strip. The strip is heated in a zone for heating with direct flame. Thermal homogenization of the strip is carried out in a homogenization chamber containing at least one radiation heating pipe in order to homogenize a temperature of the strip after passing through the zone for heating with direct flame of the previous stage. Oxidation of the strip is provided in an oxidation chamber with an oxidizing atmosphere having a volumetric oxygen concentration of more than 1%. The strip is restored in a restoration zone. EFFECT: oxide layer with uniform and controlled thickness is obtained on the strip surface. 15 cl, 3 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 766 264 C2 (51) МПК C21D 1/34 (2006.01) C21D 1/52 (2006.01) C21D 9/46 (2006.01) C21D 9/56 (2006.01) C23C 8/18 (2006.01) C23C 8/10 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА C23C 8/80 (2006.01) ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ F27B 9/28 (2006.01) (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21D 1/34 (2021.08); C21D 1/52 (2021.08); C21D 9/46 (2021.08); C21D 9/56 (2021.08); C23C 8/18 (2021.08); C23C 8/10 (2021.08); C23C 8/80 (2021.08); F27B 9/28 (2021.08) (21)(22) Заявка: 2019142708, 20.12.2019 20.12.2019 Дата регистрации: 10.02.2022 Приоритет(ы): (30) Конвенционный приоритет: 23.01.2019 BE BE2019/5038 (43) Дата публикации заявки: 21.06.2021 Бюл. № 18 (56) Список документов, цитированных в отчете о поиске: US 2017137906 A1, 18.05.2017. SU 377349 A1, 17.04.1973. RU 2485202 C1, 20.06.2013. US 2010173072 A1, 08.07.2010. (54) СПОСОБ И ПЕЧЬ ДЛЯ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ВЫСОКОПРОЧНОЙ СТАЛЬНОЙ ПОЛОСЫ, СОДЕРЖАЩИЕ КАМЕРУ ТЕМПЕРАТУРНОЙ ГОМОГЕНИЗАЦИИ (57) Реферат: Изобретение относится к термической пламенем предыдущего этапа. Обеспечивают обработке высокопрочной стальной полосы. окисление полосы в камере окисления с Осуществляют нагревание полосы в зоне для окислительной атмосферой, имеющей объемную нагревания прямым пламенем. Производят ...

One kind being used for cold rolled annealed nitrogen hydrogen retrieval system and method

一种用于冷轧退火氮氢回收系统，包括冷却器、金属过滤器、储气罐、稳压罐、除氧器、催化脱氧器、水冷却器、干燥器、过滤器，所述冷却器、金属过滤器、储气罐、稳压罐、除氧器、催化脱氧器、水冷却器、干燥器、过滤器依次连接，所述冷却器的气体入口通过总管连接连续退火炉氮气和氢气混合保护气出口，所述过滤器通过管道连接连续退火炉炉前氮氢混器。与现有技术相比，本发明的有益效果是：1)通过氮氢混合保护气的回收，节省氢气和氮气制作及外购的费用；2)氮氢混合回收装置简单、占地面积小、性能可靠；3)解决了能源浪费问题，同时降低了废气排放，保护环境。

Patent RU2016152000A3

ВИ“? 2016152000” АЗ Дата публикации: 22.10.2018 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж Я «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2016152000/02(083291) 23.12.2014 РСТ/СМ№2014/094611 23.12.2014 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. СМ 201410240643.3 30.05.2014 СМ 2. СМ 201410240632.5 30.05.2014 СМ Название изобретения (полезной модели): [ЖХ] - как заявлено; [ ] - уточненное (см. Примечания) СПОСОБ ИЗГОТОВЛЕНИЯ ГОРЯЧЕПЛАКИРОВАННЫХ ИЗДЕЛИЙ ИЗ ТОНКОЙ СТАЛЬНОЙ ПОЛОСЫ НЕПОСРЕДСТВЕННО ИЗ РАСПЛАВЛЕННОЙ СТАЛИ БЕЗ ТРАВЛЕНИЯ Заявитель: БАОШАН АЙРОН ЭНД СТИЛ КО.., ЛТД., СМ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) В220 11/06 (2006.01) В21В 1/46 (2006.01) С21О 8/02 (2006.01) С21О 1/74 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) В22011/00-11/12, В21В1/00-1/46, С21108/00-8/12, С2101/00-1/74 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): Езрасепе%, ]-Р ...

Method and equipment for controlling furnace pressure of continuous annealing furnace

本发明揭示了连续退火炉炉压控制方法，包括：通过煤气流量检测器和空气流量检测器检测各区的煤气流量和空气流量，相加得到煤气输入总量和空气输入总量，计算燃烧前炉内气体压力；通过成分检测器检测煤气成分以及煤气与空气的配比；通过热电偶检测燃烧前炉内气体温度；根据燃烧化学方程式、煤气输入总量、空气输入总量、煤气成分以及煤气与空气的配比预测燃烧后的气体成分和气体总量；通过热电偶检测燃烧后炉内气体温度；根据燃烧前炉内气体压力、燃烧前炉内气体温度和燃烧后炉内气体温度计算燃烧后炉内气体压力；根据燃烧前后炉内气体压力，基于气体的增量通过算法计算出废气风机开度，并使用该废气风机开度控制废气风机。

A kind of stainless steel tube elbow protective atmosphere heat treatment gas operated device

本发明提供一种不锈钢管弯头保护气氛热处理导气装置，箱体由隔板分割构成弯管放置区和保护气进气区，保护气进气区位于弯管放置区的正下方，保护气进气区侧面下部设有保护气进气孔，在保护气进气区内通过导流板分隔构成往返折流的保护气进气通道，保护气进气通道的下端与保护气进气孔相通，弯管放置区通过均匀分布在隔板上的聚气孔与保护气进气区相通；箱体侧面顶部设有放置管弯头的开口，通过开口与弯管放置区的空腔相通。本发明通过在箱体内设置导流板，将保护气进气区分隔构成往返折流的保护气进气通道，同时在隔板上均匀设置聚气孔，这样在热处理过程中，就可以解决空气无法排净的问题，提高保护气氛的纯度，可以解决电加热弯头热处理内、外表面氧化的难题，有效提高钢管耐腐蚀性能。

Method for producing a directional electric steel plate having high magnetic property and thin profile

이 발명은 상자소둔로 없이도 안정적인 억제제를 형성시켜 두께가 얇으면서도 자기특성과 피막특성이 양호한 방향성 전기강판을 제조하게 하려는 것이다. 이 발명에 따른 방향성 전기강판의 제조방법은 방향성 전기강판의 슬랩를 1,250℃이하의 저온에서 재가열하고, 열간압연한 후, 1.45-1.55mm의 두께로 1차 냉간압연하고 열연판소둔을 행한 다음, 2차 냉간압연하여 0.20mm 이하의 얇은 판 두께를 얻으며, 탈탄 및 질화에 의해 질소를 강 속에 넣고, 고온하에서 최종소둔하는 단계를 포함하며, 열연판소둔단계에서의 최고도달온도가 1,120℃ 이상이며, 최고도달온도까지의 승온시간이 90초 이내이고, 2차 냉간압연단계에서의 압연율이 85-90%이며, 최종소둔단계에 진입하기 전에 소량의 Si 3 N 4 가 혼입된 MgO 슬러리를 강판에 도포하고, 최종소둔단계는 100% 수소분위기에서 행한다. 전기강판 슬랩은 0.1 중량% 이하의 C와, 1.0-4.8 중량%의 Si와, 0.010-0.05 중량%의 Al과, 0.05-2.0 중량%의 Mn과, 100ppm 이하의 N와, 0.01 중량%의 S 및, 잔부를 이루는 Fe 및 불가피한 불순물을 함유한다. 전기강판 슬랩에는 Cu, Cr 및 Ni이 함유됨으로써 최종적으로 AlN계통의 질화물을 억제제로 이용하거나, 또는, B가 함유됨으로써 BN를 억제제로 이용할 수 있다. The present invention is to form a stable inhibitor without a box annealing furnace to produce a grain-oriented electrical steel sheet having a thin thickness but good magnetic properties and coating properties. In the method for producing a grain-oriented electrical steel sheet according to the present invention, the slab of the grain-oriented electrical steel sheet is reheated at a low temperature of 1,250 ° C. or lower, hot rolled, and then first cold rolled to a thickness of 1.45-1.55 mm and subjected to hot rolled sheet annealing Cold rolling is used to obtain a thin plate thickness of 0.20mm or less, including nitrogen in the steel by decarburization and nitriding, and final annealing at a high temperature. The maximum reaching temperature in the hot-rolled sheet annealing step is 1,120 ° C or more. The temperature rise time to the maximum reaching temperature is within 90 seconds, the rolling rate in the second cold rolling stage is 85-90%, and the MgO slurry containing a small amount of Si 3 N 4 mixed into the steel sheet before entering the final annealing stage. After application, the final annealing step is carried out in a 100% hydrogen atmosphere. Electrical steel slab is 0.1 wt% or less of C, 1.0-4.8 wt% of Si, 0.010-0.05 wt% of Al, 0.05-2.0 wt% of Mn, 100 ppm or less of N, and 0.01 wt% of ...

One kind improves the coercitive method of rare-earth magnet

本发明公开了一种提高稀土磁体矫顽力的方法，所述方法包括如下步骤:步骤101，准备预烧结磁体，其中所述预烧结磁体的密度低于7.9g/cm 3 ；步骤102，准备扩散涂覆液，所述覆涂液中不含重稀土元素；步骤103，对所述预烧结磁体涂覆所述扩散涂覆液；步骤104，对所述预烧结磁体进行热处理。本发明提高稀土磁体矫顽力的方法无需使用贵重的稀土元素，也无需使用常规晶界扩散工艺之外的额外的设备，并且磁体剩磁和方形度没有降低或降低极少。

A kind of production technology of fluid pressure line stainless steel tube

本发明公开了一种液压管路用不锈钢管的生产工艺，依次按如下步骤，对不锈钢管坯进行加热穿孔和打头；对不锈钢管进行第一次酸洗，并进行修磨和润滑；对处理后的不锈钢管进行冷拔加工；对不锈钢管进行脱脂处理；对不锈钢管进行固溶热处理；对不锈钢管进行矫直、切管；对不锈钢管进行酸洗钝化处理对台不锈钢管进行涡流探伤、管体检验、超声波探伤；检验和探伤合格后的不锈钢管喷标入库。本发明所涉及的一种液压管路用不锈钢管的生产工艺，所包括的固溶热处理和酸洗钝化处理能够使得生产出来不锈钢管满足液压管路标准的内外表面光洁度和耐腐蚀等要求。

assembly parts

본 발명은 10 %(w/w) 이상의 크롬을 함유하는 철, 니켈 및/또는 코발트에 기초한 합금의 조립 부품에 관한 것이고, 상기 조립 부품은 내부 표면 및 외부 표면을 갖는 환형 형상을 가지며 0.1mm 내지 5mm 범위의 내부 표면과 외부 표면 사이의 두께를 가지며, 상기 합금은 표면으로부터 0 μm 내지 100 μm 범위의 깊이에서 250 HV 0.05 내지 370 HV 0.05 범위의 마이크로 경도를 제공하는 고용체 내의 질소 함량을 갖는다. 본 발명은 또한 조립 부품을 구비한 조립품에 관한 것이다.

Manufacturing method of thick-specification high-precision cold-rolled low-alloy high-strength steel strip

本发明公开了一种厚规格高精度冷轧低合金高强钢带的制造方法，包括厚规格高精度冷轧低合金高强钢带，厚规格高精度冷轧低合金高强钢带厚度大于3mm，冷轧钢带满足相关标准要求的力学性能；厚规格高精度冷轧低合金高强钢带尺寸精度达到冷轧标准PT.B级别；厚规格高精度冷轧低合金高强钢带的脱碳层+晶间氧化层的深度为<15μm；厚规格高精度冷轧低合金高强钢带晶粒度达到6级以上；本发明具有非常好的汽车应用背景及现实的切入市场，在充分研发的基础上进行产业化探索具有很好的指导作用，前景广阔。为新一代冷轧技术应用研究，能够带动相关产业国产化及推动我国在该技术前沿的国际地位，对全面推动钢材深加工和特种需求钢材国产化意义重大。

Continuous stress relief annealing process for cold-rolled stainless steel strip

本发明涉及一种冷轧不锈钢带连续去应力退火的工艺，包括步骤S1、退火炉加温；步骤S2、放料：将不锈钢带，放在退火炉卷取机上并将不锈钢带带头以及带尾进行焊接；步骤S3、清洗：利用喷淋装置对不锈钢带进行喷淋清洗；步骤S4、去应力退火：将清洗后的不锈钢带通过连续退火炉；步骤S5、冷却卷取。通过温度检测装置精准控制退火炉加温的加热温度、对不锈钢带的清洗、冷却以及最后的卷材成型的一套完整处理工艺，使得本发明具备操作简便、效率高、去应力退火后产品表面良好，并且能够很好的消除残余应力，提高冷轧不锈钢带材后期的加工性能，解决了冷轧后不锈钢带材残余应力大的缺点问题。

Heat treatment method

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Online annealing method for stainless steel composite plate strip

本发明涉及不锈钢复合板带退火技术领域，尤其是一种不锈钢复合板带在线退火方法，具体步骤如下；S1:从不锈钢板、碳钢板中剪裁宽幅为1200‑1600mm，厚度为0.3‑2.0mm的板块；S2:将S1中的不锈钢板块放入退火炉内以150‑180℃/h的加热速度加热到850‑900℃，保温4‑5h，然后降低到室温；S3:将S1中的碳钢板块放入退火炉内以180‑220℃/h的加热速度加热到650‑700℃，保温3‑4h，然后在炉内降低到室温；S4:采用开卷机，将经过上述S2、S3处理后的板块进行开卷、矫直；S5:采用焊机对经S4处理的板材进行复合焊接；S6:将S5复合焊接的不锈钢复合板放在加热炉内加热；S7:使用专业制造的温轧复合轧机对板材进行复合轧制，制成不锈钢复合板带，本发明能够提高碳钢、不锈钢的切削加工性能，降低加工难度。

Method of manufacture of multilayer thin-walled bellows from stainless steel

FIELD: rocket engine manufacture; applicable also in other fields of engineering where bellows are operated under wide ranges of temperatures and pressures. SUBSTANCE: round billets are produced from preliminary cut sheets of preset sizes and welded by pulsed arc welding in medium of protective gases. Assembled multilayer package is welded up from both ends and subjected to heat treatment in protective medium at temperature of 1000- 1130 C with holding at this temperature for 20-45 min and subsequent cooling. EFFECT: improved product operating characteristics. 5 cl, 2 ex дс ПЧ Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ "” 2 157 415 ^^ С1 (51) МПК? О 15/00 С 210 8/10, Е 16 4 3/04, В 21 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 99102054/02, 04.02.1999 (24) Дата начала действия патента: 04.02.1999 (46) Дата публикации: 10.10.2000 (56) Ссылки: К.Н. БУРЦЕВ. Металлические сильфоны. - Машгиз, 1963, с.8-11,80. КУ 2100675 СЛ, 27.12.1992. КУ 2064106 СЛ, 20.07.1994. КУ 2075392 СЛ, 20.03.1992. КЦ 2053078 СЛ, 27.01.1996. ЗЦ 10561781 АЛ, 10.10.1999. $Ц 113689, 18.01.1958. (98) Адрес для переписки: 141400, Московская обл., г. Химки, ул. Бурденко 1, ОАО НПО "Энергомаш им. академика В.П. Глушко", начальнику отдела Судакову В.С. (71) Заявитель: Открытое акционерное общество НПО "Энергомаш имени академика В.П. Глушко" (72) Изобретатель: Семенов В.Н., Бобков В.И., Зыков М.И., Полушин В.Г., Каторгин Б.И., Деркач Г.Г., Чванов В.К. , Мовчан Ю.В., Пестов Ю.А., Огибалин П.И. , Авсенюк Т.М., Вычеров А.Н. (73) Патентообладатель: Открытое акционерное общество НПО "Энергомаш имени академика В.П. Глушко" (54) СПОСОБ ИЗГОТОВЛЕНИЯ МНОГОСЛОЙНЫХ ТОНКОСТЕННЫХ СИЛЬФОНОВ ИЗ НЕРЖАВЕЮЩЕЙ СТАЛИ (57) Реферат: Изобретение относится к ракетному двигателестроению и может быть использовано в других областях техники, где требуются сильфоны, работающие в условиях широкого диапазона температур и давления. Задачей изобретения является улучшение эксплуатационных ...

Steel pipe forming device

本发明一种钢管成型装置，包括钢板卷曲装置和钢管成型装置，所述钢管成型装置的出料端设置有钢管表面热处理装置，所述钢管表面热处理装置包括底座，所述底座上设置有支架箱，所述支架箱上设置有处理管，所述钢管由处理管一端伸入处理管内部，钢管由处理管的另一端伸出，所述处理管的一端设置有第一密封机构，处理管的另一端设置有第二密封机构，所述处理管连接有惰性气体输气管；还包括涡流加热装置，本技术方案中增加了表面热处理装置，并且通过氩气作为惰性气体避免钢管在高温的热处理状态下与空气中的气体发生反应，影响表面热处理的效果。该表面热处理装置通过涡流的方式来对钢管进行加热，该方法较安全，避免了对环境的影响。

A kind of middle low temperature oil bath tempering equipment

本发明提供了一种中低温油浴回火设备,包括炉体、抽真空保护气氛系统、热油循环系统、冷油循环系统，抽真空保护气氛系统包括三通气管、通过三通气管与炉体内腔连通的真空泵以及储藏惰性气体的钢瓶，钢瓶与三通气管连接；热油循环系统包括热油罐、第一热油泵、加热器和两端连通炉体的热油循环管路，热油罐、第一热油泵、加热器依次连接在热油循环管路上；冷油循环系统包括第二热油泵、冷油罐和两端连通炉体的冷油循环管路，第二热油泵和冷油罐均连接在冷油循环管路上。通过使回火油在完全密封的条件下进行加热和保温，消除回火油因与空气接触发生氧化而导致的老化，同时消除油烟，并能获得更高的回火温度，同时在完成回火加工后。

Furnace loading device for the heat treatment of small metal parts.

Charging device for a thermic treatment furnace for small metalic articles

Improvements to charging devices for heat treatment furnaces

Charging device for a thermic treatment furnace for small metalic articles

The charging device for a thermic treatment furnace for small metallic articles in a continuous chamber, which run through the furnace on an internally situated conveyor belt and the inlet to which conveyor is shielded by a shield (12), in which a lock (3) is arranged, is characterised in that the lock (3) is mounted on a force measuring device (7) and is inserted into the shield (12) by means of a flexible diaphragm (5). <IMAGE>

METHOD FOR PRODUCING STRIPES FROM METAL AND PRODUCTION INSTALLATION FOR IMPLEMENTING THIS METHOD

1. Способ непрерывного или периодического изготовления горячекатаных полос из литого металла в частности стали, в соответствии с которым литая полоса в виде черновой полосы подвергается по меньшей мере одному процессу термообработки и в котором она затем в виде горячекатаной полосы наматывается или укладывается в штабель,отличающийся тем,что полученная после процесса разливки черновая полоса подвергается воздействию атмосферы защитного газа при одновременном первом процессе гомогенизации структуры, по выбору, путем поддержания температуры примерно 900-1000°C, путем понижения температуры примерно на 200°C, или путем повышения температуры примерно на 250°C, причемчерновую полосу после первого процесса гомогенизации подвергают по меньшей мере одной другой термообработке, по выбору, путем поддержания температуры примерно 880-940°C, путем понижения температуры примерно на 50°C или путем повышения температуры примерно на 50°C,причем черновую полосу в дальнейшем процессе подвергают включающему в себя по меньшей мере один проход процессу горячей прокатки, при котором черновую полосу подвергают уменьшению толщины, равному менее 49%,причем черновую полосу после этого подвергают второму процессу гомогенизации или, соответственно, рекристаллизации микроструктуры, по выбору, путем поддержания температуры примерно 700-900°C, путем понижения температуры примерно на 100°C или путем повышения температуры примерно на 50°C, ичто черновую полосу затем подают через синхронизированное со скоростью транспортировки или полосы разделительное устройство, и затем в виде прокатанной горячекатаной полосы отделяют от остальной черновой по� РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2011 128 420 A (51) МПК B21B 1/26 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2011128420/02, 09.12.2009 (71) Заявитель(и): СМС ЗИМАГ АГ (DE) Приоритет(ы): (30) Конвенционный приоритет: 09.12.2008 DE 102008061206.5; 08.07.2009 DE 102009032358.9 (85) Дата начала ...

A kind of carbonization treatment method of high-density alloy product

本发明公开了一种高比重合金产品的脱碳处理方法，其包括制备半烧结填料、制备氢气烧结填料、半烧结炉脱碳处理、氢气烧结炉脱碳处理；制备半烧结填料包括：准确称量氧化铝粉末、炭黑粉末并进行干式混合‑过筛后获得半烧结填料成品；制备氢气烧结填料包括准确称量氢气烧结填料粉末‑氢气烧结填料粉末加入无水酒精球磨‑过筛‑烘干箱干燥处理‑干燥器中冷却‑过筛后获得氢气烧结填料成品；半烧结炉脱碳处理包括选取石墨舟皿‑放置高比重合金产品‑半烧结炉烧结‑高压风清理；氢气烧结炉脱碳处理包括选取石墨舟皿‑放置高比重合金产品‑氢气烧结炉烧结‑降温出炉‑高压风清理后喷砂处理。本发明的脱碳处理方法能有效对高比重合金产品进行脱碳处理。

Heat-treating apparatus

The technique and its device of a kind of annealing furnace tail gas recycle purification

本发明公开了一种退火炉尾气回收净化的工艺及其装置。该工艺包括如下步骤：(1)对退火炉尾气进行冷凝处理，收集第一尾气；(2)对所述第一尾气进行第一过滤处理，收集第二尾气；(3)向所述第二尾气中补充氮气，得到第三尾气；(4)对所述第三尾气进行第二过滤处理，收集第四尾气；(5)对所述第四尾气依次进行加热处理和脱氧处理，收集第五尾气；(6)对所述第五尾气进行吸附处理，收集净化气。通过上述工艺及与其配套的装置，能有效去除退火炉尾气中的粉尘、乳化液、轧制油和氧气等杂质，最终净化气满足保护气要求、可直接进入退火炉中进行循环利用，具有显著的经济效益和社会环保效益。

Control method for high-temperature annealing of oriented silicon steel

本发明公开一种取向硅钢高温退火的控制方法，钢液转炉或电炉冶炼，连铸成板坯，板坯加热，进行热轧形成热轧板，热轧板退火，冷轧至0.23mm厚度，进行脱碳退火和渗氮处理后，表面涂覆MgO涂层获得脱碳退火钢卷，然后进行高温退火；在高温退火过程中，将高保温温度至玻璃膜底层形成温度之间的平均冷却速度控制在‑6℃/h～‑15℃/h；将高保温温度至出炉时的总冷却速度控制在‑6℃/h～‑25℃/h；当钢卷冷却至低于出炉温度时，将钢卷出炉，再将钢卷采用空冷或在保护气氛中进行离线冷却，所述出炉温度≤500℃。本发明通过合理控制高温退火的冷却速度，可在不增加制造成本的情况下，有效减少取向硅钢高温退火后的一些板形缺陷。

High-temperature tempering process for communication part die steel

本发明公开了一种通讯件模具钢的高温回火工艺，包括以下步骤：将模具零件放入第一回火炉内加热至420℃‑470℃进行回火，然后进行第一次回火保温；模具零件转入至充满惰性气体的冷却环境内，直至表面温度达到100℃；然后将模具零件转至第二回火炉内快速升温至605℃‑625℃进行回火，快速地进行第二次回火保温；模具零件转出并快速风冷至室温。通过在第一次回火时采取420℃‑470℃温度能消除模具零件的内应力和提高模具零件弹性极限，把淬火马氏体转变为回火托氏体，然后通过605℃高温快速回火使其马氏体分解，消除内部全部应力，使部分组织转变为具有优良综合机械性能的回火索氏体，使模具达到既有一定的强度，又有良好的塑性及冲击韧性的综合机械性能的效果。

Hot rolling on-line mobile heat preservation heat treatment process

一种热轧在线移动保温热处理工艺，板坯经加热、轧制、层冷、卷取至热卷状态，热卷卸卷打捆完毕后在30min内对热卷加装在线移动保温装置，对热卷开始进行热处理，并同时在线运至热卷保温处理区域；热处理时间1～48h后，采用空冷方式冷却后将钢卷送入库；其中，卷取温度控制在250～750℃之间。本发明热轧在线移动保温热处理工艺有效结合热卷卷取工艺温度，第一时间对热卷进行高效保温热处理，保温处理的热卷随保温装置在线移动，确保实现差异化的热处理工艺需求，不仅可以有效改善产品性能，且一次投资低，满足高节奏的大生产需求，节约能源。

Non Oxygen Annealing Furnace System with internal Rx generator

Rx 가스 발생기 내장형 무산화 열처리 설비를 개시한다. 본 발명에 따른 Rx 가스 발생기 내장형 무산화 열처리 설비는, 내부 환경이 Rx 가스 분위기로 유지되는 열처리로, Rx 가스 생성용 반응 촉매를 수용하는 내부 개질기, Rx 가스의 생성 원료가 되는 원료가스에 공기를 소정의 비율로 혼합하여 상기 내부 개질기에 공급하는 원료 공급수단, 열처리로의 내부 온도를 소둔 처리에 필요한 온도까지 가열시키기 위해 설치되는 가열수단 및 상기 가열수단의 온/오프 및 연소부하 제어를 통해 상기 열처리로 내부의 온도를 조절할 수 있도록 구비되는 제어기를 포함하며, 내부 개질기는 열처리로 내에 장입되고 가열수단으로 축열식 라디안트 튜브 버너가 적용됨을 구성의 요지로 한다.

Radial amorphous iron core and preparation method thereof

本发明提供一种径向非晶铁芯及其制备方法，包含如下步骤：将非晶带材按规定尺寸制得冲片，然后依次通过退火处理、粘结剂浸润处理和固化处理后，制得非晶铁芯，所述粘结剂浸润处理中的粘结剂包含如下组分：硅酸钠54‑68wt％，环氧树脂30‑40wt％，OP乳化剂1‑3wt％，甘油1‑3wt％；非晶铁芯由上述制备方法制备而成。本申请制得的非晶铁芯具有较高的磁学性能、低损耗和较高的使用温度，其综合性能较好。

A kind of heat treatment process of crystal grain orientation pure iron

本发明公开了一种晶粒取向纯铁的热处理工艺，涉及取向纯铁生产技术领域。本发明先将纯铁板坯进行脱碳退火，其中脱碳退火温度为775～825℃，退火时间为2～5min；将脱碳退火处理后的纯铁板坯进行二次退火，其中二次退火包括升温段、净化段和降温段；升温段的平均升温速率为85～131℃/h；净化段的净化温度为升温段的最终到达温度，净化时间为8～12h，降温段的平均降温速率为166～305℃/h。本发明使得纯铁中达到合适的碳含量，避免纯铁中多余的碳导致电磁性能的恶化；并且通过二次退火二次再结晶形成单一的高斯织构{110}<001>，进而有利于最终晶粒取向纯铁产品电磁性能的提高。

Processes for producing articles with stress-free slit edges

무응력 에지를 구비하는 제품의 생산 방법은, 구리 재료의 스트립을 제공하기 위해, 구리 또는 구리 합금시트를 슬릿하는 공정, 보호 분위기하에서 200 내지 250℃에서 노내에서 스트립을 가열하는 공정, 및 상온까지 스트립을 냉각하는 공정을 포함하고, 이와 같이 생산된 스트립은 압형된 제품을 제조하는데 유용하다. Processes for the production of products with stress-free edges include the steps of slitting copper or copper alloy sheets, heating the strip in a furnace at 200 to 250 ° C. under a protective atmosphere, and up to room temperature to provide a strip of copper material. The process includes cooling the strip, and the strip thus produced is useful for producing a pressed product. 무응력 에지, 스트립, 보호 분위기. 환원 분위기, 슬릿. Stress-free edges, strips, protective atmosphere. Reducing atmosphere, slit.

Induction field heat treatment method and apparatus for amorphous alloy

본 발명은 전력용 변압기 철심, 각종코어, 가포화리액터, 쵸크코일등의 전자기 부품에 사용되는 연자성 재료인 비정질 합금의 유도자장에 의한 열처리방법 및 그 장치에 관한 것으로써, 고주파 유도가열로를 이용하여 비정질코어에 유도자기장에 의해 열과 자장을 동시에 가해주므로서, 자기적 특성이 우수한 비정질코어(비정질재료)를 제조할 수있는 자장열처리 방법 및 그 장치를 제공하고자 하는데, 그 목적이 있다. 본 발명은 비정질코어(비정질합금)를 열처리하는 장치에 있어서, 고주파를 발생시키는 유도가열로(5); 개스주입관(12) 및 개스 배출관(14)이 구비되어 있는 석영튜브(8); 유도가열로(5)에 연결되고 상기 석영튜브(8)의 외부를 에워싸도록 형성되는 유도코일(6); 비정질코어(3)를 상기 석영튜브(8)의 내부로 이송시키는 코어트래이(9); 상기 석영튜브(8)내에 설치되는 더미코어(11); 및 그 일단이 상기 더미코어(11)의 외부표면에 부착되고, 그 타단이 유도가열로(5)와 연결되는 연결대(7)를 포함하여 구성됨을 특징으로 하는 비정질 합금의 유도자장 열처리장치 및 이를 이용한 유도자장 열처리방법을 그 요지로 한다.

For the treatment of the control method of protective gas atmosphere in the protective gas room of metal band

所述发明的主题是由一种用于对金属条带（3）连续处理的保护性气体室（2）中的气氛进行控制的方法形成的。在此，该金属条带（3）经由多个锁（4）而被引导进入和离开该保护性气体室（2）。至少一个锁（4）具有至少两个密封元件（5，6）以用于该金属条带（3）从中通过，其结果是在这两个密封元件（5，6）之间形成了一个密封室（7）。根据本发明，测量了在该保护性气体室（2）中的以及在该锁（4）的密封室（7）中的气体压力（P2，P D ），并且对密封室（7）中的压力（P D ）进行调节，准确的说是其方式为使得在运行过程中，该保护性气体室（2）与该密封室（7）之间的压力差被保持为尽可能与一个最佳值一致。

Method of making hot-plated articles from thin steel strip directly from molten steel without etching

FIELD: metallurgy. SUBSTANCE: invention relates to the field of metallurgy. In method involving melting and refining for obtaining of refined molten steel, continuous casting of thin steel strip, low annealing, hot coating application, according to the invention, at the stage of continuous casting of a thin steel strip, the refined molten steel is poured into a two-roll casting machine, wherein under the cooling action of the rolls of the casting machine, the steel cools and solidifies in the form of a steel strip blank, wherein the casting process of the workpiece is carried out in a medium of a mixture of inert and reducing gas, wherein on the surface of the steel strip blank a film of iron oxides is formed; at the low annealing step, the cast workpiece is fed into the low-annealing furnace into which the mixed gas is also fed, wherein iron oxide film is reduced to ferruginous metal; at hot coating step, cast steel strip after cooling in protective atmosphere is directed into plating bath for application of zinc coating or other alloys, after that steel strip is cooled and wound. EFFECT: method is provided for making hot-clad articles from a thin steel strip directly from molten steel without etching, which enables to provide mass production, by reducing the number of production steps caused by excluding the etching operation and combining the production of the thin steel strip by the continuous casting method with hot-coating application; metal is extracted, practically, up to 100 %. 16 cl, 9 dwg, 5 tbl, 5 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 701 242 C2 (51) МПК B22D 11/06 (2006.01) B21B 1/46 (2006.01) C21D 8/02 (2006.01) C21D 1/74 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B22D 11/06 (2019.05); B21B 1/46 (2019.05); C21D 8/02 (2019.05); C21D 1/74 (2019.05) (21)(22) Заявка: 2016152000, 23.12.2014 (24) Дата начала отсчета срока действия патента: Дата регистрации: 25.09.2019 30.05.2014 CN CN ...

Differential drive gear for transmission and method for manufacturing the same

본 발명은 자동차 변속기용 디퍼렌셜 드라이브 기어와 그 제조방법에 관한 것으로서, 디퍼렌셜 드라이브 기어의 제조공정 중 가공 및 침탄열처리 공정에 앞서 열간단조 및 공냉 후 실시하게 되는 열처리 공정(Normalinzing)을 침탄열처리 온도 이상의 고온에서 1차 및 2차의 열처리로 나누어 실시하는 단계적 결정립 미세화 열처리 방식으로 개선하여 제조함으로써, 결정립 미세화를 보다 극대화 하여 굽힘피로강도를 크게 향상시킨 자동차 변속기용 디퍼렌셜 드라이브 기어와 그 제조방법에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a differential drive gear for a vehicle transmission and a method of manufacturing the same, wherein a heat treatment process (Normalinzing) performed after hot forging and air cooling prior to processing and carburizing heat treatment during the manufacturing process of the differential drive gear is performed at a temperature higher than the carburizing heat treatment temperature. The present invention relates to a differential drive gear for a vehicle transmission and a method of manufacturing the same, which are improved by a stepwise grain refining heat treatment method performed by dividing into primary and secondary heat treatments, thereby maximizing grain refinement and greatly improving bending fatigue strength.

Method of manufacturing an article having a stress-free cut end

(57)【要約】 銅シートまたは銅合金シートを細長く切断して銅材料片を製造する工程と、炉内の保護雰囲気下、200〜250℃の温度で材料片を加熱する工程と、材料片を常温まで冷却する工程とを含む、応力のない切断端を有する物品の製造方法。このようにして製造された材料片は、打ち抜きによる物品を製造する上で有用である。

Cold rolling forming equipment and method for preparing channel by using carbon steel or stainless steel

一种利用碳钢或不锈钢制备槽道的冷轧成型设备与方法，属于金属材料制备技术领域，该种设备特征在于主要由3‑4台冷轧机构成的初轧机组、光亮退火炉窑、压齿机组、由2‑3台冷轧机构成的精轧机组、预成形和终成形机组、感应加热器和计算机控制装置组成，感应加热器位于各机组的前面，利用上述设备可通过冷轧成形，连续作业，制造出主立面厚度为6.0～12.0mm、宽度为40～200mm的槽道成品。和普通的热轧成型技术相比，成品表面无损伤，而且产品硬度是热轧产品的1.6倍，因其一次成型，其生产效率可提高30％。

Surface Treatment Method For High Strength Steel

본 발명은 고강도강을 가열할 때 발생하는 표면의 Mn계 산화물, Al계 산화물, 및 Si계 산화물 중 하나 이상을 제거하여 도금이 가능하게 만드는 것을 목적으로 하며, 이를 달성하기 위하여, Si계 산화물, Mn계 산화물, Al계 산화물 중 하나 이상이 형성된 고강도강을 공급하는 단계; 네트워크 또는 아일랜드형으로 형성된 상기 산화물에 우선적으로 플라즈마가 도달하도록 플라즈마와 함께 플라즈마 아크를 상기 고강도강 표면에 조사하는 플라즈마 처리단계를 포함하는 고강도강의 표면 처리 방법을 제공한다. The present invention aims to make plating possible by removing one or more of Mn-based oxides, Al-based oxides, and Si-based oxides on the surface generated when heating high-strength steel, and to achieve this, Si-based oxides, Supplying a high strength steel on which at least one of an Mn oxide and an Al oxide is formed; Provided is a method for surface treatment of high strength steel, comprising a plasma treatment step of irradiating a plasma arc onto the high strength steel surface together with a plasma to preferentially reach the oxide formed in a network or island type.

Production method of SPCC-W black skin steel plate

本发明公开了一种SPCC‑W黑皮钢板的生产方法，1、钢中的硅含量为：0.02%≤[Si]≤0.030%；2、黑皮钢卷厚度为3.0mm，冷轧压下率为66.6%；冷轧卷的卷曲张应力控制在30Mpa以内；3、罩式退火工艺设计如下，保护介质采用氮气保护，0～440℃温度加热区间采用85～90℃/h的加热速度，在440℃保温3小时，确保轧制钢卷表面的乳化液残留物充分挥发，440～675℃采用41～51℃/h加热速度进行加热，退火保温温度设定为675℃，保温8小时，带加热罩冷却时间设定为0.5小时，摘加热罩温度630～650℃，温度高于650℃时继续带罩冷却；摘加热罩后再用冷却罩，空冷+水冷6小时，冷到280℃±10℃出炉，在终冷台上通风氧化，快速氧化形成特殊氧化层，外层形成以Fe 2 O 3 为主的致密氧化层。

Continuos type atmosphere heat treating furnace

Controlled atmosphere continuous heat treatment furnace for ferrous metals consists first of a charge chamber having a heating means and recirculating fan. This chamber is separated from a second heat treatment chamber by a door, and gas at the desired controlled gas composition is admitted to this furnace at the desired temperature, whiles the charge chamber is being purged the charge system chamber is sealed by a door at the inlet to the furnace, and the heating chamber sealed by a door at the exit to the furnace. The work piece passes continuously through the furnace in a heated controlled atmosphere. Cooling and reciprocation of the furnace is also covered by the invention.

Annealing installation with m-shaped strip treatment tunnel

本发明公开了一种退火设备，其用于引导穿过所述设备的金属带材的连续退火，包括入口滑槽2、第一顶部辊室3、加热工位4、5、6、冷却工位7、8、第二顶部辊室9和排出滑槽10，它们一起限定M形蜿蜒的隧道，所述隧道具有四个腿部，所述腿部经由两个顶部辊室和下侧转向段彼此连接。入口滑槽沿着第一个腿部延伸，加热工位和冷却工位沿着第二个腿部、所述下侧转向段和第三个腿部延伸，排出滑槽沿着第四个腿部延伸。设置带材进料装置和带材排出装置，以用于在退火工艺期间使作为自由悬挂环的所述带材在两个顶部辊室之间连续引导穿过加热和冷却工位。

Heat treatment method of tool steel

Retort furnace for thermal treatment of metallic workpieces

Method and apparatus for refining magnetic domains grain-oriented electrical steel

설비와 공정을 최적화함으로써, 이를 통해 자구 미세화 효율을 높이고 작업성을 개선하여 처리 능력을 증대시킬 수 있도록. 생산라인을 따라 진행하는 강판을 지지하면서 상기 강판의 상하 방향 위치를 제어하는 강판지지롤 위치 조절단계, 강판 표면에 레이저빔을 조사하여 상기 강판을 용융시켜 강판의 표면에 홈을 형성하는 레이저 조사 단계를 포함하고, 상기 레이저 조사단계는 강판에 레이저 빔을 조사하는 광학계가 강판에 대해 회전하여 강판의 폭방향에 대해 레이저빔의 조사선 각도를 변환하는 각도 변환 단계를 포함하며, 상기 강판의 폭 방향을 따라 레이저 빔의 초점거리 변화에 맞춰 강판을 지지하는 강판지지롤의 기울기를 변화하는 초점거리 유지 단계를 더 포함하는 방향성 전기강판의 자구미세화 방법을 제공한다.

Method for manufacturing iron-based parts of color television picture tube

Annealing furnace for water removal unit with a gas flow rate measuring device and its control method

Disclosed is a gas flow rate measuring unit for an annealing furnace having a water removal unit. The gas flow rate measuring unit for the annealing furnace includes: a plurality of bodies spaced apart from each other by a predetermined distance on the gas flow rate measuring unit; a differential pressure generator to collect a gas dynamic pressure and a gas static pressure in the annealing furnace; an dynamic pressure impulse line connected with a dynamic port of the differential pressure generator; a static pressure impulse line connected with the static port of the differential generator; a differential voltage measuring unit to measure the differential voltage between the dynamic voltage and the static voltage transmitted through the impulse lines, respectively; a moisture removal unit to remove moisture by cleaning the inner part of each impulse line by nitrogen; a dynamic pressure valve block interposed between the dynamic impulse line of the body and the differential pressure measuring unit to connect the dynamic impulse line with the differential pressure measuring unit; a static pressure valve block interposed between the static impulse line of the body and the differential voltage measuring unit to connect the static pressure impulse line with the differential pressure measuring unit; and a differential voltage zero valve to allow the dynamic valve block and the static valve block to selectively communicate with atmosphere to make the differential voltage a zero voltage.

Continuous atmosphere heat treatment furnace

Supercarburizing steel for machine structure with high anti-pitting fatigue strength and supercarburizing heat treatment method

The steel sheet according to the present invention is excellent in fitting resistance and has a chemical composition of 0.15 to 0.25 wt% of C, 0.90 to 1.20 wt% of Si, 0.45 to 0.65 wt% of Mn, 0.020 wt% or less of P, 0.015 wt% or less of S , Ni: not more than 0.20 wt%, Cr: 2.10 to 2.80 wt%, Mo: not more than 0.15 wt% (not included), V: 0.002 to 0.08 wt%, Nb: 0.020 to 0.040 wt% , N: 0.010 to 0.015% by weight, and the balance of Fe and unavoidable impurities. The present invention also provides a mechanical structural component in which the high carbon carburizing steel is subjected to a cutting process and a high carbon carburizing heat treatment. (A) carburizing the steel material at 1,000 DEG C for 42 minutes; (b) carburizing / spreading at 860 ° C for 159 minutes; (c) carburizing / spreading at 860 ° C for 159 minutes; And (d) heating at 860 ° C for 30 minutes, followed by tempering with He gas.

Annealing method

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Preventing method for coloring of cold rolled high tensile steel sheet

Method of preparing grain powder barium ferrite

Input the 1st ferrite water solution of 0.5 mol, blow non-oxidative gas, nitrogen gas into it at the speed of 3l/min, add up the alkali, sodium hydroxide equivalent, stir up at speed 200rpm, keeping the temperature of the reactor at 50 degree C, replace the non-oxidative gas with oxidative gas, and blow in at speed of 3l/min, stir up for 8 hours and proceed to the oxidative reaction, producing the sediment of 1st ferrite sodium hydrate. Add up in the equivalent ratio of 10,15,20 of the needle type 2nd ferrite sodium hydrate, 9.77gm, Ba(OH2).8H20 3.155gm, citric acid 2.58gm and make a wet mixture, and dry up at the temperature 100 degree C.

Patent JPS4848702A

Passivation method of corrosion-resistant steel for high-purity pipe

本发明属于防不锈钢管腐蚀的技术领域，尤其涉及一种高纯净管用耐腐蚀钢钝化方法。一种高纯净管用0Cr 15 Ni 10 MnMoWTiAlSc耐腐蚀钢钝化方法，包括以下步骤：预钝化处理、光亮退火处理、电解处理、溶液钝化处理。本发明钝化方法可使0Cr 15 Ni 10 MnMoWTiAlSc合金制品具有良好的防吸气渗入特性、抗尘化腐蚀性能。使用寿命比经普通钝化处理的0Cr15Ni10MnMoWTiAlSc超纯净管用合金在相同高纯特气中的工作环境下的使用寿命高0.5倍以上。

Method for Manufacturing Hot Rolled Steel Sheet with Good Fatigue Resistance and Corrosion Resistance

본 발명은 열연강판을 제조하는 방법에 관한 것으로서, 산세공정을 생략시킬 수 있을 뿐만 아니라 열연 공정의 잔열을 이용하여 열연 스케일층을 환원열처리하여 순철로 변태시킨 후 표면층에 침입형 합금원소를 강제 삽입시키는 온라인(on-line) 열처리를 실시함으로써 표면층 경화, 피로강도 및 내식성이 우수한 복합 기능의 열연강판을 제조하는 방법을 제공하고자 하는데, 그 목적이 있는 것이다. The present invention relates to a method for manufacturing a hot rolled steel sheet, and can not only omit the pickling process, but also by using the residual heat of the hot rolling process by reducing heat treatment of the hot rolled scale layer to transform it into pure iron and forcibly inserting an invasive alloy element into the surface layer. It is an object of the present invention to provide a method for producing a composite hot rolled steel sheet having excellent surface layer hardening, fatigue strength and corrosion resistance by performing on-line heat treatment. 본 발명은 강을 열간마무리압연한 다음, 권취하여 열연강판을 제조하는 방법에 있어서, 열간마무리압연한 다음, 권취하기 전에 열연판 표면온도가 570℃ 이상이 유지 되도록 하여 650-800℃의 온도 및 10% 이상의 수소농도분위기하에서 환원열처리하여 열연 스케일층을 80% 이상의 순철로 환원시킨 후, 500℃~750℃의 온도 및 암모니아 가스 혹은 암모니아 및 흡열성 가스 혼합가스 분위기하에서 200 초 이상 표면경화열처리한 다음, 급냉하여 피로강도 및 내식성이 우수한 열연강판을 제조하는 방법을 그 요지로 한다. The present invention is a method of manufacturing a hot rolled steel sheet by hot-rolling and then winding steel, hot-rolled and then hot rolled sheet surface temperature is maintained at 570 ℃ or more before winding, the temperature of 650-800 ℃ Reduction heat treatment under a hydrogen concentration atmosphere of 10% or more to reduce the hot rolled scale layer to 80% or more pure iron, and then surface hardening heat treatment for 200 seconds or more under a temperature of 500 ° C. to 750 ° C. and ammonia gas or ammonia and endothermic gas mixed gas atmosphere. Next, a method of manufacturing a hot rolled steel sheet having excellent fatigue strength and corrosion resistance by quenching is made the point. 피로강도, 내식성, 열연강판, 표면경화, 환원 Fatigue Strength, Corrosion Resistance, Hot Rolled Steel, Surface Hardening, Reduction

Cold formability 65Mn hot rolled steel plate Fast Spheroidizing Annealing method

本发明公开了一种冷成型用65Mn热轧钢板快速球化退火方法，包括连续两次退火等步骤。本发明具有退火周期短、球化效率高的有益效果。

Method and device for continuous heat treatment

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Manufacture the method and the object of object by coating, by hot work hardening

本发明涉及一种用于制造被镀层的、通过热加工硬化的物体、尤其是机动车的车身构件或者结构构件、例如B柱、A柱或者车门槛的方法，所述物体由用金属材料预先镀层的原料体构成，所述原料体由金属构成。在此，原料体在一个方法步骤中被奥氏体化。在该方法步骤之前预先镀层的原料体的镀层被人工氧化。根据本发明的方法在此并不局限于应用在汽车领域，而是能够用在所有这样的技术领域中，即使用和/或制造热加工件。根据所述方法制造的物体具有厚度为0.05μm至30μm的氧化层。

Surface treatment method of Aluminium using plasma

본 발명에 따른 알루미늄 표면개질방법은, 알루미늄(130)의 표면을 플라즈마(100)로 처리함으로써 알루미늄의 표면 친수성이 향상되도록 하는 것을 특징으로 한다. 플라즈마(100)는 대기 상태에서 형성되는 것이 바람직하다. 알루미늄(130)은 플라즈마(100)를 왕복으로 지나치도록 함으로써 알루미늄(130)의 표면이 플라즈마(100)로 처리되는 것이 바람직하다. 이 때 알루미늄(130)이 플라즈마(100)를 지나치는 횟수는 2 내지 6회인 것이 바람직하다. 플라즈마(100)는 방전전극(110)과 접지전극(120) 사이에서 형성되며 방전전극(110) 및 접지전극(120) 중 어느 하나는 유전체(140)로 가로막혀 있는 것이 바람직하다. 접지전극(120)은 회전가능하게 설치되며, 알루미늄(130)은 접지전극(120)의 회전에 의하여 이동하도록 설치되는 것이 바람직하다. 본 발명에 의하면, 진공시스템을 사용하지 않기 때문에 알루미늄을 플라즈마 내에서 왕복운동하도록 할 수 있으며, 따라서 알루미늄의 왕복횟수를 제어함으로써 별도의 다른 공정조건을 변화시킴이 없이 간단하게 표면개질을 제어할 수 있게 된다. 또한 별도의 코팅제나 화학용액을 사용하지 않기 때문에 인체 위해성이 덜하고 친환경적이다. The aluminum surface modification method according to the present invention is characterized in that surface hydrophilicity of aluminum is improved by treating the surface of aluminum (130) with plasma (100). The plasma 100 is preferably formed in a standby state. It is preferable that the surface of the aluminum 130 is treated with the plasma 100 by allowing the aluminum 130 to pass over the plasma 100 in a reciprocating manner. At this time, the number of times that the aluminum (130) passes the plasma (100) is preferably 2 to 6 times. The plasma 100 may be formed between the discharge electrode 110 and the ground electrode 120 and any one of the discharge electrode 110 and the ground electrode 120 may be blocked by the dielectric 140. Preferably, the ground electrode 120 is rotatably installed, and the aluminum 130 is installed to move by the rotation of the ground electrode 120. According to the present invention, since the vacuum system is not used, the aluminum can be reciprocated in the plasma. Therefore, by controlling the number of reciprocations of the aluminum, the surface modification can be easily controlled without changing any other process conditions . Also, it does not use any special coating or chemical solution, so it is less harmful and environmentally friendly.

Vacuum carburizing process for low-carbon alloy steel

本发明公开了一种低碳合金钢的真空渗碳工艺，采用脉冲式真空渗碳设备进行渗碳，包括下述的步骤：S1.将低碳合金钢加热到900±5℃进行均热；S2.在均热温度下，进行第一段渗碳、扩散和第二段渗碳，然后升温到920±5℃进行第二段扩散；第一段渗碳、扩散时间分别为42‑50分钟与115‑122分钟，第二段渗碳时间60‑70分钟，第二段扩散时间160‑200分钟，第一段渗碳和第二段渗碳采用脉冲式通入渗碳剂；S3.降温到830±5℃，在保温后进行淬火。采用本发明的工艺，在热处理后表面无氧化、碳化物1‑2级，从而实现产品避免后续断裂及开裂的风险，提升产品的使用寿命。

Method and apparatus for reducing contamination of workpieces

How to Reduce Nitrogen Oxides in a Strip Processing Furnace

본 발명은 금속 스트립(5)이 안내되어 통과하는 직화로(1)에서 금속 스트립(5)을 처리하는 방법에 관한 것이다. 직화로(1)는 가스 버너에 의해 직접적으로 연소되고, 스트립 진행 방향으로 보았을 때 연소 구역(2)의 바로 앞에 비-연소 구역(7)을 구비하고, 연소 구역(2)에서 오는 배기가스(14)가 유동하여 금속 스트립(5)을 예열한다. 비-연소 구역(7)을 빠져나온 배기가스는 애프터버너 챔버(9)에서 후-연소된다. 본 발명에 따르면, 비-연소 구역(7)에서 배기가스(14) 내로 메탄이 분사되어, 배기가스(14) 내에 포함되어 있는 질소산화물이 시안화수소로 변환된다. The present invention relates to a method for processing a metal strip (5) in a direct fire furnace (1) through which the metal strip (5) is guided. The direct fire furnace 1 is directly combusted by a gas burner, has a non-combustion zone 7 immediately in front of the combustion zone 2 as viewed in the direction of strip travel, and the exhaust gas coming from the combustion zone 2 ( 14) flows to preheat the metal strip (5). Exhaust gas exiting the non-combustion zone (7) is post-combusted in the afterburner chamber (9). According to the present invention, methane is injected into the exhaust gas 14 in the non-combustion zone 7 so that the nitrogen oxides contained in the exhaust gas 14 are converted to hydrogen cyanide.

Method and apparatus for generating a heat treatment atmosphere

본 발명은 CO 및 H 2 가 탄화수소의 산화의 주요 생성물로서 생성되는 내열발생기를 제공하는 것으로서, 플라티늄(Pt) 및 특히 로듐(Rh)과 같은 귀금속 촉매는 다공성 쎄라믹 지지체 예를들어, 알루미나 담체상에 실려지고, 내 발생기 반응기에 있어서, 느리고 그리고 에너지가 강화된 개질반응에 의해 CO 및 H 2 적거나 전혀 생성되지 않고 이것은 보조가열수단을 포함하지 않고도 느리고 높은 공간속도로, 자체 열적으로 조작되어 반응기가 소형이 되게 하고, 그리고 여기서 공간속도는 촉매담체의 입방피트당 출력가스의 시간당 일정수의 표준입방피트로서 규정되고, 바람직한 탄화수소는 메탄 또는 프로판이고 바람직한 산화제는 5% 내지 100%이하의 산소를 갖춘 질소/산소 혼합물이고, 본 발명의 내 발생기는 희박한 대기 및 낮은 탄소 포텐셜을 필요로 하는 열처리 적용은 위해 필요로 되는 환원가스 CO 및 H 2 를 생성하는 공정 및 장치를 제공하고, 본 발명은 자체 열적으로 조작되고 매우 높은 공간속도가 달성되는 반응기를 제공하며, 본 발명의 반응기는 열처리로내에서 완충적인 대기를 수득하도록 요구된 환원원소를 저가로 제공할 수 있어서 이에따라 막 또는 PSA에 의해 생성된 저가의 질소를 로내로 유입할 수 있도록 한다. *선택도 제3도

METHOD AND FURNACE FOR HEAT TREATMENT OF HIGH-STRENGTH STEEL STRIP, CONTAINING A TEMPERATURE HOMOGENIZATION CHAMBER

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 142 708 A (51) МПК B21B 1/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019142708, 20.12.2019 (71) Заявитель(и): ДРЕВЕР ЭНТЕРНАСЬОНАЛЬ (BE) Приоритет(ы): (30) Конвенционный приоритет: 23.01.2019 BE BE2019/5038 Адрес для переписки: 129090, Москва, ул. Большая Спасская, д. 25, строение 3, ООО "Юридическая фирма Городисский и Партнеры" Стр.: 1 A 2 0 1 9 1 4 2 7 0 8 R U A (57) Формула изобретения 1. Способ термической обработки перемещающейся высокопрочной стальной полосы (5), включающий следующие этапы: a) нагревание полосы (5) в зоне (10) для нагревания прямым пламенем; b) температурная гомогенизация полосы (5) в камере (20) гомогенизации, содержащей по меньшей мере одну трубу (25) радиационного нагрева, чтобы гомогенизировать температуру полосы (5) после прохождения зоны (10) для нагревания прямым пламенем предыдущего этапа; c) окисление полосы (5) в камере (30) окисления с окислительной атмосферой, имеющей объемную концентрацию кислорода более чем 1%; d) восстановление полосы (5) в зоне (40) восстановления. 2. Способ по п.1, отличающийся тем, что зона (40) восстановления содержит восстановительную атмосферу, имеющую объемную концентрацию водорода более 3%. 3. Способ по любому из предшествующих пунктов, отличающийся тем, что этап окисления выполняют при температуре полосы (5) 650°C–750°C. 4. Способ по любому из предшествующих пунктов, отличающийся тем, что упомянутая объемная концентрация кислорода составляет 1,5–5%, предпочтительно 2–5%. 5. Способ по любому из предшествующих пунктов, отличающийся тем, что этап температурной гомогенизации выполняют при температуре полосы (5) 650°C–750°C. 6. Способ по любому из предшествующих пунктов, отличающийся тем, что этап a) нагревания выполняются так, чтобы получить температуру полосы (5) 650°C–750°C. 7. Способ по любому из предшествующих пунктов, отличающийся тем, что этап температурной гомогенизации выполняют в ...

Method and industrial furnace for using a residual protective gas as a heating gas

一种用加热用气体和保护气体运行以便对材料进行热处理的工业炉(1)，为了提高该工业炉的能效，第一燃烧器(3.1)在加热方面优先于第二燃烧器(1.2)运行，当所述第一燃烧器(3.1)低于所述工业炉(1)达到温度额定值所需要的功率时，接通并运行所述第二燃烧器(3.2)，达到所述温度额定值时，切断所述第二燃烧器(3.2)，使其停止运行。