ТЕРМООБРАБОТКА ДЕТАЛИ ПОСРЕДСТВОМ МНОГОЧАСТОТНОГО ИНДУКЦИОННОГО НАГРЕВА

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Изобретение относится к технологии термообработки изделий из стали, преимущественно из высоколегированной стали. Изобретение может быть использовано при термообработке труб, в частности гофрированных труб, и других цилиндрических изделий различного сечения, в том числе сварных. Для улучшения коррозионной стойкости изделий и предотвращения коррозионного растрескивания изделий под влиянием остаточных механических напряжений при сохранении неизменной питтингостойкости изделия и предупреждении появления окалины осуществляют термическую обработку длинномерных изделий, которая включает индукционный нагрев при прохождении изделий через индукторы и последующее принудительное охлаждение. Нагрев ведут в среде инертного газа в две стадии. На первой стадии проводят нагрев до температуры в интервале 750-800°С при скорости нагрева 12-33°С/сек, а на второй стадии - до температуры в интервале 850-900°С при скорости нагрева 0,8-6,2°С/сек. Скорость движения изделия составляет 1-2,5 м/мин, а время нагрева ...

УСТРОЙСТВО ДЛЯ ИНДУКЦИОННОГО НАГРЕВА

Изобретение относится к области индукционного нагрева. Для повышения надёжности работы устройства для индукционного нагрева токопровод выполнен из восьми равных по длине гибких медных изолированных проводов, при этом попарно: первый-второй и седьмой-восьмой ряды прямой ветви, а третий-четвёртый и пятый-шестой ряды, расположенные по краям обратной ветви, на середине устройства перекрёстно меняются рядами, причём концы первого-второго и седьмого-восьмого рядов прямой ветви занимают средние ряды обратной ветви, а концы третьего-четвёртого и пятого-шестого рядов обратной ветви занимают средние ряды прямой ветви. 7 ил.

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Изобретение относится к электротермии, в частности к технологическим установкам индукционного нагрева токопроводящих тел. Техническим результатом является повышение производительности установки. В способе нагрева металлических заготовок для прессования кабельных оболочек осуществляют индукционный, неравномерный по длине заготовок, одновременный нагрев в двух цилиндрических индукторах, охватывающих заготовки снаружи, до температуры пластической деформации, а затем подают заготовки менее нагретыми концами в пресс-пушер пресса с обеих сторон и наносят кабельную оболочку на жгут проводов путем прессования и выдавливания оболочки в выходное отверстие пресс-пушера, оба индуктора и все их секции питают от одного источника питания с регулируемой частотой, при этом в процессе формирования заданной градиентной кривой конечного температурного состояния по длине заготовок осуществляют поочередное циклическое переключение во времени секций каждого из двух индукторов, причем длительность импульса мощности ...

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ИЗОЛИРОВАННАЯ КОНСТРУКЦИЯ КАТУШКИ ИНДУКЦИОННОГО НАГРЕВА

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ЗПОСОБ ТЕРМИЧЕСКОЙ ОБРАБОТКИ ИЗДЕЛИЙ ИЗ НИЗКО- И СРЕДНЕУГЛЕРОДИСТЫХ НЕЛЕГИРОВАННЫХ И МАЛОЛЕГИРОВАННЫХ СТАЛЕЙ

Способ термической обработки изделий из низко- и среднеуглеродистых, нелегированных и малолегированных сталей, включающий индукционный нагрев и последующее охлаждение, отличающийся тем, что нагрев изделия осуществляют до температуры в интервале от (Ac1-75)° С до (Aс1+25)° С со скоростями от 1000 до 2000° С/с, а охлаждение производят с интенсивностью теплоотвода (10-20)• 103 Вт/м2•°С.

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Способ обработки твердых материалов, включающий обработку материалов электрическим полем, отличающийся тем, что электрическое поле создают электродами, установленными с зазором между собой, в котором размещен обрабатываемый материал, при этом силовые линии поля замыкаются между электродами через образец.

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Изобретение относится к термической обработке и может быть использовано в оборудовании для индукционного нагрева деталей, например под пайку отрезных алмазных сегментных кругов. Цель изобретения - повышение качества обработки путем обеспечения стабильности нагрева. Устройство содержит индуктор 1, подключенный к Ю А ii L источнику нагрева ТВЧ, приспособления для размещения на нем обрабатываемой детали , выполненное в виде опорного стола - сопряженных цилиндрических сегментов 9 и 10 различного диаметра, продольные оси которых расположены взаимно перпендику; лярно и в одной плоскости, и стойки, блока управления нагревом с датчиком 15 в виде пьезокерамической пластины, при этом высота приспособления равна резонансной длине для частоты нагрева ТВЧ, а пьезоке- рамическая пластина закреплена на стойке в зоне пучности колебаний приспособления . Устройство позволяет вынести датчик из зоны нагрева и обеспечить стабильность нагрева обрабатываемых деталей. 1 з.п.ф- лы, 3 ил. ы Чи Ё ЗКйлокд цпрабленир ...

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Устройство для индукционного нагрева

Установка для индукционного нагрева полос

Изобретение относится к машиностроению и может быть использовано при индукционном нагреве полос, в частности рессорных листов. Цель изобретения - расширение технологических возможностей путем проведения дополнительной операции правки. Установка содержит накопитель 1 с приводом 2 поворота, механизм транспортирования в виде цепного конвейера 4 с захватами 5, ворошителем 6 и отсе- кателями 7, обеспечивающий поштучную выдачу изделий в механизмы ориентации изделий и правки, установленных между накопителем и индуктором Механизм ориентации выполнен в виде закрепленного на кронштейне с возможностью вертикального перемещения датчика 10 ориентации и соединенного с ним кантователя 12 с приводами подъема и поворота Механизм правки выполнен в виде рычага 17, имеющего возможность поворота, с датчиками 18 и 19 прогиба и соединенных с датчиками размещенных перпендикулярно направляющей элементов правки в форме прессов с пнев- моцилиндрами 20 и 21 и с упорами 22 и 23. обеспечивающих исправление деформации ...

Способ термической обработки режущих элементов сельскохозяйственных машин

Изобретение относится к металлургии, а именно к термической обработке, в частности , режущих элементов сельскохозяйственных машин. Цель изобретения повышение выхода годного путем исключения поводок и трещинообразования при сохранении твердости. Способ заключается-в индукционном нагреве сегментов режущих аппаратов из стали 65Г до закалочных температур , охлаждении и отпуске, причем охлаждение осуществляют движущимся потоком полимерсодержащего водного раствора сульфорицината при 35-55°Си скорости движения потока охлаждающей среды 0,2-0,4 м/с или потоком водного раствора полиакриламида в количестве 0,2-4,5 % и сульфорицината Е в количестве 1-15%. Охлаждение можно производить потоком водного раствора сополимера напритового латекса в количестве 0,8-2,0% и сульфорицината Е в количестве 1-10%. 1 табл. (Л С ...

Устройство для термообработки крупногабаритных полых деталей вращения

Изобретение относится к термической обработке с применением индукционного нагрева и может быть использовано для закалки крупногабаритных деталей вращения типа колец. Цель изобретения состоит в повышении качества термообработки. Устройство для термической обработки крупногабаритных полых деталей вращения состоит из разъемной по вертикальной оси закалочной камеры 1, в нижней неподвижной полукамере 2 которой расположен подъемный вдоль оси камеры -6 D (Л DO DO sJ СО ...

Способ закалки плоских пластинок

Индукционная установка для нагрева изделий током промышленной частоты

Способ термической обработки валков для холодной прокатки

Индукционный нагреватель

Погруженное электронагревательное устройство для нагрева жидких сред

Устройство для термической обработки цилиндрических деталей

Способ методического индукционного нагрева деталей

MACHINE TOOL FOR PROCESSING OF CYLINDRICAL ARTICLES

PEЦИPKУЛЯЦИOHHO-HAГPEBATEЛЬHAЯ УCTAHOBKA

Индуктор

Способ нагрева деталей

Способ нагрева металлов

CПOCOБ TEPMOOБPAБOTKИ ИЗДEЛИЙ

Станок для закалки деталей

СТАНОК ДЛЯ ЗАКАЛКИ ДЕТАЛЕЙ, .содержащий индуктдр, колонну, каретку с вертикальными направляющими и нижним центром, расположенные на направляюпщх каретки верхний центр и люнет с гайками, привод вращения нижнего центра, приводы перемещения каретки, верхнего центра и люнета. отличающийся тем, что, с целью снижения металлоемкости и повыоения стабильности закалки, он снабжен установленными на верхнем центре и люнете механизмами фиксации их положения на направляющих каретки, вьтолненньми каждый в виде рычагоа с закрепленными на их концах рейками и с фасками на наружной поверхности шестерни, серег, клинового ползуна, ролика и привода разворота рычагов, при зтом шестерня закреплена на гайке и зацеплена с рейками , серьги шарннрно соединены концами между собой и с- 1 1чагами, ролик установлен на соединенных между собой концах серег и подпружинен относительно ползуна для постоянного контакта с его клиновой поверхностью, ползун соединен с приводом разворота рычагов, а фаски последних взаимодействуют ...

Способ закалки с нагревом ТВЧ изделий с криволинейной поверхностью и станок для его осуществления

... 1. Способ закалки с нагревом ТВЧ изделий с криволинейной поверх-, ностью, образованной сопряжением участков окружностей различного радиуса , включающий нагрев и охлаждение криволинейной поверхности при непрерьтном повороте изделия, о тличающийся тем, что, с целью повьппения качества закалки, поворот изделия осуществляют последовательно относительно центров участков криволинейной поверхности, которые располагают в плоскости симметрии индуктора и на расстоянии друг от друга, равном разности радиусов окружностей сопрягаемьпс участков криволинейной поверхности.

Индуктор для термообработки зубьев пил

Изобретение относится к индукционной термической обработке. Целью изобретения является повышение качества термообработки пил и уменьшение энергозатрат на термообработку путем локальной закалки и низкого отпуска зубьев пил. При шаговом перемещении полотна пилы очередной зуб нагревают в закалочной секции 2 индуктора , а закаленные зубья перемещаются в отпускную секцию 3 индуктора. При этом силу тока в секциях индуктора регулируют шунтом 5, перекрывающим прорезь 4 в токоведущих шинах 1. 1 ил. 1 табл.

Устройство для изотермического отжига цилиндрических поковок

Способ индукционного нагрева изделий

Использование: индукционный нагрев, в частности снижение шума при обработке длинномерных изделий. Сущность изобретения: способ включает нагрев при непрерывном транспортировании изделия с одновременным шумоглушением с помощью звукоизоляционной камеры и проемных вставок, которые облицованы изнутри звукопоглощающим материалом, а также примыкающих к вставкам сменных полых заслонок, размещенных соссно с транспортируемым изделием. При этом на отрезке изделия длиной 2Аи. где Дм - длина волны изгибных колебаний в изделии, осуществляют демпфирование путем подачи воды струями под давлением. Причем струи отстоят друг от друга на расстоянии не более Ли /2, а силу давления каждой струи F выбирают из условия F Zex V. где ZBX - входное механическое сопротивление стенки изделия . V - колебательная скорость стенки изделия. 1 ил.

Индукционная установка

Изобретение относится к индукционному нагреву кольцевых заготовок под пластическую деформацию. Цель изобретения состоит в повышении равномерности нагрева кольцевых заготовок . Индукционная установка содержит корпус 1 с индуктором 2, обмотка которого состоит из двух;горизонтальных параллельно расположенных плоских спиральных катушек: верхней 3 ...

Устройство для непрерывно-последовательной закалки профильных изделий из проволоки малого сечения

Изобретение относится к области металлургии Р может быть использовано для термообработки профильных изделий из проволоки малого, сечения , а также в процессе навивки и закалки тангенциальных расширителей малосъемных поршневых колец тракторных и автомобиггьных двигателей повышенной мощности. Цель изобретения - улучшение качества изделия 3 процессе обработки. Дпя этого ...

Индукционная установка

Индукционная печь для нагрева цилиндрических изделий

ИНДУКЦИОННАЯ ПЕЧЬ ДЛЯ НАГРЕВА ЦИЛИНДРИЧЕСКИХ ИЗДЕЛИЙ, преимущественно проволоки в бунтах, содержащая ивдуктор с тепловой изоляцией и фланцами, продольные магнитопроводы, устано-пенные по образующим индуктора, продольные и торцовые изоляционные 1рокладки, отличающаяся .тем, что, с целью новышения КПД, печь снабжена закрепленными на фланцах радиальными торцовыми магкитопроводамв и регулировочными винтами, -опертыми на торцовые изоляционные рокладки и установленными на продольных магнитопроводах, а последние мЙстко связаны с фланцами.

Установка для индукционного нагрева заготовок

Изобретение относится к оборудованию кузнечно-прессовых и термических цехов и может быть использовано для индукционного нагрева заготовок под ковку, например заготовок деталей буровых замков. Цель изобретения - автоматизации и повышение надежности работы. Из бункера 1 заготовки 3 поштучно извлекаются с помощью магнитного захвата 5 автооператором 4 и переносятся на вращающиеся диски 6 механизма ориентации 7. Опущенная на диски 6 заготовка ориентируется осью вдоль транспортера 8. Транспортер 8 формирует столб заготовок и продвигает его сквозь П-образный кронштейн 9 на полотно транспортера 11 периодического действия. Одновременно с транспортером 11 срабатывает цилиндр 19, прижимая призму к столбу заготовок и проталкивая заготовки через индуктор 12. Нагретая заготовка транспортируется в раздвижную матрицу. Установка позволяет автоматизировать процесс загрузки и разгрузки за счет наличия механизмов поштучной загрузки, ориентирования, накопления и поштучной выгрузки ориентированной заготовки, ...

Способ изготовления холоднокатаных труб

Устройство для индукционного нагрева

Установка для индукционного нагревазАгОТОВОК

Установка для отпуска кромок листов

Сущность изобретения: установка включает загрузочное устройство, выполненное в виде рольганга, состоящего из двух секций 1, 2 роликов 3, объединенных приводами 4, 5, Ролики 3 рольгангов смонтированы на подшипниках в рамах 6, 7, 8 и 9. Между секциями роликов 3 в проеме смонтирована рама 10 с рельсовым путем (РП). На РП установлена тележка 11с размещенными на ней индукторами 12 и 13 нагрева поперечных кромок листа. В секции 1 роликов 3 выполнен проем, в котором смонтирована рэма 14 с РП и стационарный индуктор 15 нагрева продольной кромки. На РП рамы 14 установлена тележка 16, имеющая возможность настроечного перемещения с индуктором 17 нагрева продольной кромки листа. Система центрирования листа состоит из А -- , 6 21 21 3 22 (Л ...

Станок для закалки

Индукционный нагреватель

Устройство для индукционного нагрева длинномерных криволинейных изделий

Устройство для индукционного нагрева изделий

Способ управления процессом индукционного нагрева

Разъемный индуктор для поверхностной закалки токами высокой частоты шеек коленчатых валов или других деталей

Способ обработки металлической полосы и проволоки

Высокочастотное нагревательное устройство

INDUKTIONSOFEN.

Verfahren zur Erzielung einer besseren spanlosen Verformbarkeit, insbesondere beim Tiefziehen und Stanzen

Mit nichtrostendem Stahl plattierte Walzen in Stranggießmaschinen

Verfahren und Anlage zur Herstellung eines Nockenwellenbauteils

Die Offenbarung betrifft ein Verfahren und eine Fertigungsanlage (110) zur Herstellung einer Buchse (14)für eine Nockenwelle (10) für einen Ventiltrieb mit Hubverstellung. Das Verfahren umfasst die Schritte Bereitstellung eines Bauteils (16) in Form eines Halbzeugs; Bearbeitung des Bauteils (16), umfassend Erzeugung einer Drehmitnahmekontur (62) im Innenbereich des Bauteils (16), zur Kopplung mit einem Wellenbauteil (12); Erzeugung eines Rastabschnitts (30) mit zumindest einem Rastbereich, der insbesondere als Rastnut (32, 34) gestaltet ist; Wärmebehandlung des Bauteils (16), umfassend zumindest abschnittsweises induktives Härten des Bauteils (16) im Bereich des Rastabschnitts (30), Anlassen des Bauteils (16); und weitere mechanische Bearbeitung des Bauteils (16), nach der Wärmebehandlung, insbesondere im Bereich des Rastabschnitts (30).

Heating device

A heating device in which workpieces (1) are moved along a conveyor path under the influence of gravity and pass through an inductor (3, 4, 5) which extends in the direction of this conveyor path and in which retaining parts (10), which move through openings in the inductor, penetrate into its interior and block the conveyor path for the workpieces (1), a control device (16, 17, 18) being provided which pulls back the retaining parts (10) at times and releases the conveyor path for the workpieces (1). ...

STRUCTURAL ELEMENT WITH A HIGH CORROSION AND OXIDATION RESISTANCE MADE FROM A DISPERSION-HARDENED SUPERALLOY, AND PROCESS FOR ITS MANUFACTURE

VORRICHTUNG ZUM INDUKTIVEN BEHEIZEN UND ABSCHRECKEN VON LANGGESTRECKTEN WERKSTUECKEN

The heat-treatment of metals

In a method of heat treating a metal object, the object is subjected to high frequency induction heating whilst at least a portion of the surface of the object is isolated from the surrounding atmosphere by a coating of liquid silicone or other straight or branched chain liquid compound composed of silicon-oxygen chains having substituted groups comprising aliphatic, aromatic or ester radicals of low molecular weight carbon content. The object may be immersed or partially immersed in the liquid and there may be relative movement between the object and the liquid. Bubble formation on the surface of the object may be prevented by subjecting the liquid to pressure waves produced by magneto-striction, piezoelectricity or electromagnetism. In an example, a thin rod of steel is allowed to drop in a stream of liquid silicone through a high-frequency heating coil.

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 high frequency electric induction heaters or furnaces

... 670,099. Induction heating. BIRLEC, Ltd., and MAY, E. July 27, 1950 [April 27, 1949]. No. 11131/49. Class 39(iii). The power input to a magnetisable workpiece being heated by a surrounding workcoil is controlled by varying the distance between a closed auxiliary conductive winding, e.g. a copper cylinder, and the work-coil, or by moving the auxiliary winding axially within the primary winding of the transformer feeding the work-coil. The movement of the auxiliary winding may be effected manually by reference to meter readings or automatically in accordance with a predetermined plan.

INDUCTION HEATING APPARATUS

An induction strip heating assembly is provided having multiple induction coils disposed in coaxial tandem and including at least two coil power sources for generation of first and second inducing currents in the coils for the induction heating of a workpiece, such as steel strip, passing therethrough. It is a feature of the invention that the assembly includes a closed loop of electrically conductive material coaxially interposed relative to the induction coils and disposed for induction therein of a circulating current opposite to a one of the inducing currents whereby a magnetic field of the circulating current in opposition to an inducing magnetic field of the inducing current causes a reduction in net magnetic field strength on a side of the loop opposite of the inducing current. Such an assembly provides suppression of intercoil magnetic coupling so that the coils may be spaced adjacent one another with less space between them than would be required if no loops were used.

A METHOD OF PRODUCING MACHINE ELEMENTS FROM STEEL

Method and apparatus for correction tempering rolling part

A method and an apparatus for correction tempering a rolling part, in which the thermal treatment deformation of a steel rolling part is corrected in a very short period of time by utilizing the plasticity thereof occurring during the progress of variation of metallographic structure due to the low-temperature tempering of the same part. A rolling part (1A) which has been quenched is placed in correction molds (2, 3) and thermally pressurized at a maximum arrival temperature of 250-500{C by a heating means. Thus, the deformation of the part is corrected at a processing rate within the range in which this part remains in its elasticity region at room temperature. When the part is heated, a high-frequency induction hearing means can also be used besides a heat transfer hearing means. A product requiring a correction time of within 6 minutes, or not more than 30 seconds when a high-frequency induction heating means is used, and having an inner and outer diameter deviation correction rate of ...

Corrective tempering method and apparatus for rolling elements.

Improvements in inductive-heating furnaces

... 977,743. Heat treatment furnaces. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 19, 1961 [Dec. 22, 1960], No. 45451/61. Heading F4B. In a continuous metal-heating furnace, workpieces 3 are passed through an inductor coil 1 on a rollerway conveyer comprising a pair of tubes 2 supplied with steel balls 8 from hoppers 7 and formed in the region of the induction coil as open channels through which the balls protrude sufficiently to carry the workpieces. Each tube 2 is formed with a watercooling pipe 11 and has an opening 9 through which the balls fall into a container 10 as the workpieces are pushed through the furnace by a ram 5. Balls are automatically returned from the containers 11 to the hoppers 7 which are of such a height that the weight of the balls therein does not cause unassisted movement along the tubes 2.

A method of soft annealing light-metal-plated steel

Steel which has been clad with a light metal is heated, possibly by induction, while the clad face is cooled, the conditions being such that the bulk of the steel is heated to above 540 DEG C. while the zone of the bond does not exceed 525 DEG C. Cooling may be effected by protective gas, compressed air or water, or by contact with a cooled metallic or non-metallic plate.

Stainless steel surface claddings of continuous caster rolls

Improvements in or relating to the treatment of metal articles to change a dimensionthereof

... 538,241. Heating by electromagnetic induction. BUDD INDUCTION HEATING, Inc. March 12, 1940, No. 4650. Convention date, April 8, 1939. Drawings to Specification. [Class 39 (iii)] [Also in Group XXII] To reduce the internal diameter of a wheel hub which has been inadvertently overbored, the inner layers are heated to a plastic state by electromagnetic induction while retaining the remainder within the elastic limit, and the hub is then slowly cooled. The method is used to change the dimensions of any article made of magnetic material. The surface of the article is subsequently hardened by re-heating and quenching. Specification 490,514 is referred to.

INDUCTION HEATING APPARATUS

... 1522955 Induction heating ROLLS-ROYCE Ltd 19 Nov 1975 [3 Dec 1974] 52310/74 Heading H5H An induction heating coil comprises a flexible copper strip 42 within a flexible sleeve 44, the sleeve defining a cooling fluid passage 46, and the strip, of rectangular cross-section, having its longer sides parallel to the axis of the coil, 47. The coil has lugs 28 attached, connected by pins 30 to cam followers 32, 34. The cam followers may be fixed to a carriage 24 (as cam followers 32 in Fig. 2) or slide therein (as cam followers 34). In use, cams 36 have the shape of a workpiece to be produced and are arranged such that on relative movement between workpiece and coil, and on elongation of a workpiece 10 as it is being drawn the coil will maintain a constant distance from the workpiece. Except at points on the workpiece with a small radius where the heating effect would be too great, the distance of separation is 3/ 16 in. The coil is made by laying a polytetrafluoroethylene mandrel along ...

Induction heating coil furnace with a mechanism for conveying workpieces therethrough in steps

For inductive heating of elongate metal workpieces 5 in an induction heating coil furnace 2 wherein the workpieces are placed with their longitudinal axes lying in the direction of the axis of the coil, and they are conveyed in discrete steps in a direction of conveyance running transversely of the axis of the coil, there is apparatus which is characterized in that a plurality of workpiece rests 7 are provided along the path of progression of the workpieces, and a conveyor mechanism is provided comprising a lifting mechanism moved by driving means to and fro in the direction of conveyance and which acts as a bearer 10 of catcher members (30, 32), Fig. 2 (not shown) engageable with each end of a workpiece 5 and which engages the workpiece from below. ...

METHOD AND APPARATUS FOR PRODUCING CAN BODIES

TEMPERATURE EQUALIZING FURNACE FOR IN THE RUN PROCEDURE FOR WARMING UP METALLIC WORKPIECES

VERFAHREN UND VORRICHTUNG ZUR WARMEBEHANDLUNG VON BANDSTAHL

INDUCTION THERMAL TREATMENT PIECES FORMED BY COMPLEX

VERFAHREN UND ANLAGE ZUM HERSTELLEN VON HOCHDUKTILEM STAHLDRAHT AUS WARMGEWALZTEM WALZDRAHT

VERFAHREN ZUR KURZZEITHARTUNG VON OBERFLACHEN STAHLERNER WERKSTUCKE

PROCEDURE FOR KURZZEITHARTUNG OF UPPERFLAT STAHLERNER WORK STUCCO

PROCEDURE AND DEVICE FOR THE WARM TREATMENT OF STRIP STEEL

PROCEDURE AND DEVICE FOR THE TENSION DISMANTLING USING SEVERAL ENERGY SOURCES

PROCEDURE AND DEVICE FOR RECOMPENSING STEEL STRIPS

VERFAHREN UND VORRICHTUNG ZUR VORBEHANDLUNG EINES WALZGUTS VOR DEM WARMWALZEN

The invention relates to a method and a device for pretreating a rolled good (3). The aim of the invention is to find a method and a device with which the rolled good (3) can be both energy-efficiently heated and thoroughly descaled before hot rolling. Said problem is solved by the following method steps: preheating the rolled good (3) in a preheating furnace (4) by a plurality of burners (11); descaling the preheated rolled good (3) in a descaling device (5); heating the descaled rolled good (3) in a heating furnace by means of a plurality of burners (11), wherein the burners substoichiometrically burn a carbon carrier so that the rolled good (3) is held in a reducing atmosphere in the heating furnace (7) by the exhaust (12, 13) created during combustion; introducing a first part of the exhaust (12) and oxygen (15) into the preheating furnace (4); post-combusting the first part of the exhaust (12) in the preheating furnace (4), wherein the volume of oxygen (15) is chosen so that the rolled ...

INDUCTION FURNACE.

ARRANGEMENT FOR INDUCTIVE WARMING UP OF METALLIC STRAND PROPERTY.

PROCEDURE AND DEVICE FOR THE WARM TREATMENT OF STRIP STEEL

INDUCTION FURNACE FOR MELTING METALS

THERMAL TREATMENT OF STEEL

Method and apparatus for heating sheet material

A method and an apparatus for heating a sheet material made of an electrically conductive, non-magnetic material, the apparatus including at least one coil arrangement with DC-carrying windings that is made to rotate around an axis oriented perpendicular to the sheet material and to thereby induce eddy currents in the sheet material.

MECHANICAL COMPONENT AND METHOD OF SURFACE HARDENING

Mechanical component () having a hole () extending therethrough and having a minimum thickness (T) of 7 mm, measured from an interior surface () constituting the outer perimeter of the hole () radially outwards to an outer surface of said mechanical component (). The maximum transverse dimension (d) of said hole () is 31.75 mm or less and that at least one part () of interior surface () material of the mechanical component () constituting the outer perimeter of said hole () comprises a martensitic microstructure produced by induction hardening using an electromagnetic induction coil () positioned inside said hole () followed by immediate quenching using a quenching device () that is positioned inside said hole () when the electromagnetic induction coil () has been removed from said hole () or while the electromagnetic induction coil () is being removed from said hole (). 1. A mechanical component comprisinga cylindrically shaped body having a hole extending therethrough and having a minimum thickness of 7 mm, measured from an interior surface constituting the outer perimeter of the hole radially outwards to an outer surface of said cylindrically shaped body,of said hole is having a maximum transverse dimension of 31.75 mm or less, andat least one part of interior surface material of the cylindrically shaped body constituting the outer perimeter of said hole comprises a martensitic microstructure produced by induction hardening using an electromagnetic induction coil positioned inside said hole followed by immediate quenching using a quenching device that is positioned inside said hole when one of:a) the electromagnetic induction coil has been removed from said hole, orb) while the electromagnetic induction coil is being removed from said hole.2. The mechanical component according to claim 1 , wherein said at least one part of the interior surface extends to a depth that is of one of 0.2 claim 1 , 0.3 claim 1 , 0.4 claim 1 , 0.5 claim 1 , 0.75 claim 1 , 1.0 mm below ...

HEATING COIL

A heating coil includes a pair of linear lead portions adapted to be connected to a power supply, and a ring-shaped or coil-shaped head portion having end portions connected to the lead portions respectively. A flow path through which a cooling medium flows is formed inside the lead portions and the head portion. An outer circumferential surface of the head portion has a circular or elliptical cross section and is configured to face a heating target portion of an inner circumferential surface of a work extending, the heating target portion extending in a circumferential direction of the work. Each of the lead portions has a straight side portion in a plane intersecting a longitudinal direction of the lead portions, the straight side portions of the lead portions being arranged in proximity to each other. 1. A heating coil comprising:a pair of linear lead portions adapted to be connected to a power supply; anda ring-shaped or coil-shaped head portion having end portions connected to the lead portions respectively,wherein a flow path through which a cooling medium flows is formed inside the lead portions and the head portion,wherein an outer circumferential surface of the head portion has a circular or elliptical cross section and is configured to face a heating target portion of an inner circumferential surface of a work, the heating target portion extending in a circumferential direction of the work, andwherein each of the lead portions has a straight side portion in a plane intersecting a longitudinal direction of the lead portions, the straight side portions of the respective lead portions being arranged in proximity to each other.2. The heating coil according to claim 1 , wherein each of the lead portions has a rectangular cross section taken along the plane intersecting the longitudinal direction of the lead portions claim 1 , and wherein one side of the rectangular cross section forms the straight side portion.3. The heating coil according to claim 2 , wherein ...

METHOD AND APPARATUS FOR TREATING A STEEL ARTICLE

A method for forming and treating a steel article of a high strength and high ductility alloy particularly suited for use as armor plate. The method includes the steps of providing a starting material for the steel article, heating the starting material to a peak temperature range in less than ten seconds, holding the heated steel composition at the peak temperature range for between two and six seconds, quenching the heated steel composition from the peak temperature range to below 100° C. (212° F.) at a temperature rate reduction of 400 and 3000° C./sec (752 and 5432° F./sec), removing residual quench media from the surface of the quenched steel composition, tempering the quenched steel composition at a temperature of 100 to 260° C. (212 to 500° F.); and air cooling the tempered steel composition to less than 100° C. (212° F.) to form a steel having desired mechanical properties. 1. A method for treating a steel article to form a high hardness and ductile alloy comprising the steps of:(a) providing a steel composition having a material thickness less than 0.5 inches (12.7 mm), having an initial microstructure of ferrite and pearlite, and having a composition of, by weight,carbon between 0.25 and 0.55%silicon between 0.15 and 0.35%,manganese between 0.40 and 1.0%,chromium between 0.80 and 1.10%,molybdenum between 0.15 and 0.25%,sulfur less than 0.040%,phosphorus less than 0.035%;(b) heating the provided steel composition to a peak temperature of between 850° C. (1562° F.) and 1150° C. (2102° F.) in less than ten seconds;(c) holding the heated steel composition at the peak temperature range for between two and ten seconds;(d) quenching the heated steel composition from the peak temperature range to below 100° C. (212° F.) at a temperature rate reduction of between 400 and 3000° C./sec (752-5432° F./sec);(e) removing residual quench media from the surface of the quenched steel composition;(f) tempering the quenched steel composition at a temperature from 100° C. to ...

HORSESHOE NAIL AND METHOD FOR MANUFACTURING SUCH HORSESHOE NAIL

A horseshoe nail for nailing a horseshoe to a hoof. The horseshoe nail is made from steel with a carbon weight percentage between 0.18 and 0.25. The horseshoe nail contains a shank with a tip at one end and a widened head at the other end. The head is at least hardened over a part of its length from its free end. The shank is not hardened over its entire or almost entire length from the tip. 1. A horseshoe nail for nailing a horseshoe to a hoof , the horseshoe nail is made from steel with a carbon weight percentage between 0.18 and 0.25 , whereby the horseshoe nail contains a shank with a tip at one end and a widened head at the other end and whereby the head is at least hardened over a part of its length from its free end , whereas the shank is not hardened over its entire or almost entire length from the tip.2. The horseshoe nail according to claim 1 , wherein the horseshoe nail is made from steel with a carbon weight percentage of at least 0.18.3. The horseshoe nail according to claim 1 , wherein that only the head is hardened up to a length from 1.9 mm to 3.9 mm from its free end.4. The horseshoe nail according to claim 1 , wherein a hardened section of the head has a hardness HRC of 30 or more.5. The horseshoe nail according to claim 4 , wherein a cross-section of both the head and the shank of the horseshoe nail is rectangular claim 4 , whereby longest sides of both the cross-sections are parallel with each other.6. A combination of horseshoe and horseshoe nail claim 1 , whereby the horseshoe is provided with one or more grooves with one or more nail holes in a base whereby in a mounted condition of the horseshoe under a hoof claim 1 , the nail is partly sunken with its head in the groove with an end protruding from the groove claim 1 , wherein that the horseshoe nail is a horseshoe nail according to in which at least a protruding section of the head is hardened.7. The combination according to claim 6 , wherein that only the protruding section of the head is ...

Plant and method for the production of metal

Plant for the production of metal products comprising: a main rolling line configured to roll thin slabs; a main casting line of thin slabs associated downstream to a heating and/or maintenance furnace to heat and/or maintain the cast thin slabs at a uniform temperature, the main casting line being positioned upstream of and aligned with said main rolling line, the main rolling line being configured to roll the thin slabs arriving at least from the heating and/or maintenance furnace; an auxiliary rolling line provided with at least one rolling unit configured to roll conventional slabs and obtain thin slabs, and with a transfer unit positioned downstream of the rolling unit and configured to transfer the thin slabs rolled by the latter to the heating and/or maintenance furnace.

Variable Hardening Depth In Track Link For A Ground-Engaging Track

A track link for a ground-engaging track includes an elongate link body having a lower hardness material forming a lower mounting surface for mounting a track shoe, and a sacrificial higher hardness material forming an upper rail surface for contacting rotatable track engaging elements. The lower hardness and higher hardness materials transition at a material interface within the elongate link body, and the material interface is longitudinally non-uniform, such that the sacrificial higher hardness material has a varying depth from the upper rail surface to retard scalloping.

Bolt-like fastening element, in particular drilling screw, and connection established thereby

A bolt-like fastening element ( 30 ), which is preferably in the form of a drilling screw shaped by pressing and/or rolling, having a head portion (LK), which has a holding region (LH) and has a starting hardness, and also having an initial portion (LA), which adjoins the head portion (LK) by way of a transition region (LÜ) and is additionally inductively hardened. The fastening element ( 30 ) is produced by cold forming from a blank made of a carbon steel having a starting tensile strength of at least 800 N/mm2. The induction hardening of the fastening element extends only to the initial portion thereof, i.e. in the case of a drilling screw to the drill bit ( 24 ) and the first turns of the thread ( 36 ). After the induction hardening, the drilling screw substantially has the starting tensile strength and is ductile in the head portion (LK). In the initial portion (LA) as far as into the central axis ( 33 ), the drilling screw is fully hardened to a hardness which is at least twice the magnitude of the starting hardness in the head portion (LK). The notched-impact energy in the head portion (LK) of the bolt-like fastening element is at least three times that in the initial portion (LA).

WIRE HEATING SYSTEM AND WIRE HEATING METHOD

A wire heating system includes an induction heating apparatus having a power supply and an induction coil arranged to heat a wire rod by an induction heating using current supplied from the power supply, and a controller configured to control the current to be supplied to the induction coil based on a feeding speed of the wire rod. The induction heating apparatus has a heating section in which the wire rod is heated by the induction heating using the induction coil, and a soaking section located downstream of the heating section to homogenize the temperature distribution of the induction-heated wire rod. The controller is configured to control the current to be supplied to the induction coil such that a temperature of the wire rod at a downstream end of the soaking section becomes a target temperature. 1. A wire heating system comprising:an induction heating apparatus comprising a power supply and an induction coil arranged to heat a wire rod by an induction heating using current supplied from the power supply; anda controller configured to control the current to be supplied to the induction coil based on a feeding speed of the wire rod,wherein the induction heating apparatus has a heating section in which the wire rod is heated by the induction heating using the induction coil, and a soaking section disposed downstream of the heating section to homogenize the temperature distribution of the wire rod induction-heated by the induction coil such that the temperature of the wire rod at a downstream end of the soaking section becomes a target temperature, andwherein the controller is configured to control the current to be supplied to the induction coil such that the temperature of the wire rod at the downstream end of the soaking section becomes the target temperature.2. The wire heating system according to claim 1 , wherein the controller controls the current to be supplied to the induction coil so as to satisfy I=k×v claim 1 , wherein I is the current to be supplied ...

CONCURRENT, ADJACENT HEAT TREATMENT AND COOLING IN METAL ANNEALING

The present invention is a system of concurrent, adjacent heat treatment and vigorous cooling in section-annealing of metal workpieces. The invention process is especially advantageous in induction heating for annealing of one section of a workpiece while maintaining relatively non-annealed properties in an adjacent section. 1. A heating and cooling process for a metal workpiece of substantially the same metal composition comprising simultaneously heating an upper heat treating zone to substantially above ambient temperature and cooling a lower cooling zone to substantially below ambient temperature so that a crystal structure of the metal of the upper heat treating zone is modified and a crystal structure of the lower cooling zone is less modified.2. The process of wherein a transition zone is formed between the upper heat treating zone and the lower cooling zone.3. The process of wherein the transition zone is relatively narrow compared to a height of the upper heat treating zone.4. The process of wherein the transition zone is relatively narrow compared to a height of the lower cooling zone.5. The process of wherein the transition zone is less than six inches of the workpiece.6. The process of wherein the transition zone is less than four inches of the workpiece.7. The process of wherein the transition zone is from one fourth inch to one inch of the workpiece.8. The process of wherein the metal workpiece comprises a metal or metals whose line slope of on a plot of thermal conductivity to temperature curve is equal to or less than that of pure aluminum.9. The process of wherein the metal workpiece comprises a metal or metals whose line slope of on a plot of thermal conductivity to temperature curve is equal to or greater than 0.004 watts/inch-degree F per degree F.10. The process of wherein the metal workpiece comprises aluminum or its alloys.11. The process of wherein the upper heat treating zone is heated to above 600 degrees F.12. The process of wherein the ...

HIGH FREQUENCY INDUCTION CONTINUOUS HEATING METHOD AND HIGH FREQUENCY INDUCTION CONTINUOUS HEATING APPARATUS

A high frequency induction continuous heating method and a high frequency induction continuous heating apparatus are provided, and they can improve a working efficiency of a heating treatment and can also improve an uniformity of the heating treatment for an entirety of a work piece corresponding to multiple types of work pieces. In the high frequency induction continuous heating method in which a work piece (W) placed on a conveyance surface () of a conveyor () is conveyed, and the work piece (W) on the conveyance surface () is heated by high frequency induction heating coils () which are disposed at both ends of the conveyor () in a crosswise direction perpendicular to a conveyance direction (shown by an arrow (D) in the drawing), the work piece (W) is rotated around an axis which is extended so as to be perpendicular to the conveyance surface (), at a certain rotation angle (θ) in mid-flow of the conveyance of the work piece (W) to change an orientation of the work piece (W). The high frequency induction continuous heating apparatus () uses the above-described method. 1. A high frequency induction continuous heating apparatus comprising:a conveyance surface on which a work piece is placed;a conveyor configured to convey the work piece on the conveyance surface;high frequency induction heating coils disposed at both ends of the conveyor in a crosswise direction perpendicular to a conveyance direction, and configured to heat the work piece on the conveyance surface; anda work piece rotating mechanism configured so as to rotate the work piece around an axis which is extended so as to be perpendicular to the conveyance surface, at a certain rotation angle in mid-flow of conveyance of the work piece so that an orientation of the work piece is changed.2. The high frequency induction continuous heating apparatus according to claim 1 , whereinafter the work piece is rotated by the work piece rotating mechanism in a state in which the conveyance of the work piece has been ...

HEAT TREATMENT APPARATUS FOR VEHICLE BODY COMPONENT

An heat treatment apparatus for a vehicle body component includes, a jig base, a lower fixed die fixedly installed on the jig base and supporting the vehicle body component that is press-molded into a predetermined shape, a heating unit installed on the lower fixed die and locally heating the vehicle body component, a plurality of side movable dies that can move reciprocally disposed at both sides of the lower fixed die, installed on the jig base, and selectively combinable with the lower fixed die, a cooling unit installed on each side movable die and cooling a heating portion of the vehicle body component, and an upper movable die that can move reciprocally in the up and down direction correspondingly to the lower fixed die, and configured to clamp the vehicle body component through the lower fixed die and at least one of the side movable dies combined together. 1. A heat treatment apparatus for a vehicle body component , the heat treatment apparatus comprising:a jig base;a lower fixed die fixedly installed on the jig base and configured to support the vehicle body component;a heating unit installed on the lower fixed die and configured to locally heat the vehicle body component;a plurality of side movable dies disposed at both sides of the lower fixed die and installed on the jig base, wherein the plurality of side movable dies is configured to move reciprocally and is selectively assembled with the lower fixed die;a cooling unit installed on each side movable die of the plurality of side movable dies and configured to cool a heating portion of the vehicle body component; andan upper movable die configured to move reciprocally in an up and down direction correspondingly to the lower fixed die, and clamp the vehicle body component through the lower fixed die and at least one side movable die of the plurality of side movable die assembled together.2. The heat treatment apparatus of claim 1 , wherein the heating unit is configured to locally induction-heat a portion ...

Heat treatment method

To reduce the roughening of a surface of a workpiece whose hardness is increased by heat treatment. In a workpiece such as a guide plate (11), not a surface (11a1) of a groove (11a) that is a desired part for hardening (hardening target position) but a surface (11a2) opposite the surface (11a1) is heat-treated as a surface to be heated that is to be directly heated by an induction heating device. This can inhibit the surface (11a1) of the hardening target position from being roughened by the heat treatment and becoming lower in surface precision than before the heat treatment. Further, according to the present invention, the use of the induction heating device makes it possible to heat-treat only a necessary part.

HIGH FORMABILITY DUAL PHASE STEEL

To improve the formability of dual phase steels, the martensite phase is tempered. It may form a ferrite-carbide structure. The tempering step occurs after martensite has been formed in the dual phase steel. The tempering step can occur in a box annealing step or it can be performed in a continuous fashion, such as on a continuous annealing, continuous tempering heat treating, or continuous coating line. The tempering step can further comprise a temper rolling on a temper mill after the heating step. 1. A method of improving the formability of a dual phase steel strip comprising ferrite and martensite , the method comprising the step of temper heat treating the dual phase steel strip at a temperature and for a time sufficient to transform at least a portion of the martensite to ferrite and cementite.2. The method of further comprising the step of temper rolling the dual phase steel after the temper heat treating step.3. The method of wherein the temper heat treating step occurs after the strip has been cold rolled.4. The method of wherein the temper heat treating step occurs after the strip has been coated with a coating.5. The method of wherein the temper heat treating step is a box annealing step.6. The method of wherein the temper heat treating step is a continuous temper heating step.7. The method of wherein the continuous temper heating is provided by induction heating.8. A method of improving the formability of a dual phase steel having a nominal tensile strength of 780 MPa comprising the step of temper heat treating the dual phase steel strip at a temperature for a time such that yield x<110 micrometers.9. The method of wherein the yield x<90 micrometers.10. A method of improving the formability of a dual phase steel having a nominal tensile strength of 980 MPa comprising the step of temper heat treating the dual phase steel strip at a temperature for a time such that yield x<100 micrometers.11. The method of claim 10 , wherein the yield x<10 micrometers.12. ...

Metal strip induction heating method and induction heating apparatus

An induction heating method for a metal strip is provided to heat a continuously conveyed metal strip using an induction heating device disposed at a first position on a pass line. The induction heating method includes a step of detecting a displacement from a predetermined datum line of a width direction center line of the metal strip at a second position on the pass line that is different from the first position, a step of computing an estimated displacement of the width direction center line of the metal strip at the first position by temporal and spatial extrapolation of the displacement based on a function expressing a time series of changes in the displacement, and a step of controlling a relative positional relationship between the induction heating device and the metal strip in a width direction of the metal strip based on the estimated displacement.

STUD-WELDABLE REBAR

A stud-weldable rebar and a method for making the rebar are disclosed. The rebar has a steel body with a weld end and a diameter that is substantially uniform along a length of the body. A tip portion at the weld end includes a hardened zone and a base portion is formed of the remaining steel body. The hardened zone has a hardness that is about 1.5-3.0 times greater than a hardness of the base portion. Induction hardening is used to form the hardened zone. 112-. (canceled)13. A method of forming a stud-weldable rebar comprising:providing a steel body with a weld end and a diameter that is substantially uniform along a length of the body;heating a portion of the weld end for about 4-9 seconds until the portion of the weld end reaches a target temperature of about 1,300-1,700° F.;allowing the heated portion of the weld end to rest for a dwell time of about 2 seconds; and,cooling the heated portion of the weld end by quenching in a cooling medium for about 5-12 seconds,wherein a hardness of the weld end portion is increased by about 1.5-3 times a hardness of a remaining portion of the steel body.14. The method of claim 13 , wherein the hardness of the hardened weld end portion is about 20-50 HRC.15. The method of claim 13 , wherein the length of the hardened weld end portion is about 40% the diameter of the steel body.16. The method of claim 13 , further comprising providing a steel body having a chemical composition of 0.08-0.23 wt % of carbon claim 13 , 0.95-1.2 wt % of manganese claim 13 , less than 0.04 wt % of phosphorous claim 13 , less than 0.05 wt % of sulfur claim 13 , 0.2-0.4 wt % of silicon claim 13 , less than 0.25 wt % of copper claim 13 , less than 0.15 wt % of nickel claim 13 , less than 0.15 wt % of chromium claim 13 , 0.001-0.05 wt % of molybdenum claim 13 , 0.001-0.02 wt % of aluminum claim 13 , 0.03-0.08 wt % vanadium claim 13 , less than 0.0005 wt % of boron claim 13 , and less than 0.02 wt % of nitrogen.17. The method of claim 13 , further ...

TRACK LINK FOR A TRACK JOINT ASSEMBLY HAVING WEAR BAND WITH LENGTHWISE-VARIED HARDNESS AND METHOD OF MAKING SAME.

A track link for a ground-engaging track system includes an elongate link body having an upper rail surface located in part upon each of a first link strap, a second link strap, and a middle section of the track link. The upper rail surface is formed by a wear band of sacrificial wear material having a hardness that is varied lengthwise along the upper rail surface to retard scalloping of the track link during service and forming relatively softer zones in the first and second link straps and a relatively harder zone within the middle section. Methodology for making such a track link is also disclosed. 1. A method of making a track link comprising:heat treating an elongate link body having a first link strap, a second link strap, a middle section, and an upper rail surface, such that a material extending throughout the elongate link body is hardened to form a harder material;tempering the elongate link body such that a portion of the harder material that forms the upper rail surface is softened to form a softer material;forming, by way of the heat treating of the elongate link body and the tempering of the elongate link body, a scallop-retarding pattern of material hardness that is varied lengthwise along the upper rail surface; andthe scallop-retarding pattern of material hardness forming relatively softer zones of the softer material in each of the first link strap and the second link strap, a relatively harder zone of the harder material in the middle section, and a wear band of the harder material extending lengthwise between an outer end of the first link strap and an outer end of the second link strap and depthwise between each of the relatively softer zones and a first bore in the first link strap and a second bore in the second link strap, respectively.2. The method of wherein the forming of a scallop-retarding pattern of material hardness further includes forming the relatively harder zone such that the relatively harder zone is continuous and extends into ...

HEATING COIL, HEAT TREATMENT APPARATUS, AND HEAT TREATMENT METHOD FOR ELONGATED WORKPIECE

A heating coil of a heat treatment apparatus is configured to inductively heat an elongated workpiece having a recessed lateral surface. The heating coil includes a base conductor and a projected conductor. A width of the projected conductor is narrower than a width of the base conductor. The projected conductor is arranged to project toward the recess from a position of the base conductor. The base conductor and the projected conductor are arranged to extend in a longitudinal direction of the workpiece. A heat treatment apparatus includes a cooling section and the heating coil. A heat treatment method uses the heating coil described above. 1. A heating coil configured to inductively heat an elongated workpiece , the workpiece having a first lateral surface and a second lateral surface adjoining each other along a corner portion , wherein the first lateral surface has a recess at a location spaced away from the corner portion , and the first lateral surface , the second lateral surface and the recess extend continuously in a longitudinal direction of the workpiece , the heating coil comprising:a base conductor configured to face the first lateral surface; anda projected conductor configured to face the recess,wherein a width of the projected conductor is narrower than a width of the base conductor,the projected conductor is arranged to project toward the recess from a position of the base conductor, andthe base conductor and the projected conductor are arranged to extend in the longitudinal direction.2. The heating coil according to claim 1 , wherein the base conductor is arranged to overlap the projected conductor.3. The heating coil according to claim 1 , wherein the projected conductor is longer than the base conductor in the longitudinal direction.4. The heating coil according to claim 1 , wherein at least a portion of the projected conductor is arranged to project from the base conductor in the longitudinal direction.5. The heating coil according to claim 1 , ...

Workpiece for induction hardening

A workpiece for an induction hardening is provided. The workpiece has a first inclined surface, a second inclined surface, and a connecting surface connecting the first inclined surface and the second inclined surface on a side toward which the first inclined surface and the second inclined surface approach each other. The connecting surface has a recessed portion. A hardened layer formed at the first inclined surface and another hardened layer formed at the second inclined surface do not overlap each other at the recessed portion.

METHOD FOR MANUFACTURING STEEL SHEET FOR COLD PRESS AND METHOD FOR MANUFACTURING PRESS COMPONENT

A method that improves stretch flange formability of a steel sheet by individual treatment matching a material of the steel sheet without performing heat treatment in a die. This method is a method for manufacturing a steel sheet for cold press, and the steel sheet is manufactured by heating an edge of the steel sheet to a temperature within a heating temperature range preset according to a microstructure of the steel sheet and cooling the steel sheet. A region, within an edge of the steel sheet subjected to shearing in a shearing step, where it is estimated that a stretch flange crack is likely to occur when a press component is formed by cold pressing is determined, and a site to be heated and cooled is set within the region. By press-forming the manufactured steel sheet, a target press component is manufactured. 1. A method for manufacturing a steel sheet for cold press , the method being a method for manufacturing a steel sheet for cold press subjected to cold pressing and comprising:a shearing step of subjecting at least a portion of an edge of the steel sheet to shearing;an analysis step of determining, within the edge of the steel sheet subjected to shearing in the shearing step, a region where it is estimated that a stretch flange crack is likely to occur when the steel sheet is formed by cold pressing; anda heating and cooling step of heating, within the edge of the steel sheet, a site included in the region determined in the analysis step to a temperature within a heating temperature range preset according to a microstructural composition of the steel sheet and cooling the site, whereinwhen, as the steel sheet, a steel sheet the principal microstructure of which is composed of a single phase of martensite is used, the method sets the heating temperature range to a heating temperature range of 500° C. or more and 700° C. or less,when, as the steel sheet, one of a steel sheet the principal microstructure of which is composed of a composite microstructure of ...

Induction hardening control system

The present invention includes: a hardening control unit ( 70 ) for controlling an induction hardening apparatus ( 10, 10 A) based on setup conditions data regarding the induction hardening apparatus ( 10, 10 A); a hardening monitoring unit ( 20 ) that measures, as measurement data, the electric quantity in an electric circuit configured to include a high-frequency inverter ( 11 ), a capacitor ( 12 ), and a heating coil ( 14, 14 A, 14 B) and that monitors an induction hardening status; and a data collecting unit ( 80 ) that collects the data from various sensors in the induction hardening apparatus ( 10, 10 A, 10 B) obtained when the induction hardening apparatus ( 10 ) subjects the work ( 15, 15 A, 15 B) to an induction hardening based on the setup conditions data outputted from the hardening control unit ( 70 ) and that collects the measurement data from the hardening monitoring unit ( 20 ) to store the collected data from the various sensors and the measurement data so that the collected data from the various sensors and the measurement data are associated to each other.

ADJUSTABLE SPACER WITH HARDENED ENDS

An adjustable spacer with a non-hardened intermediate portion therebetween is mountable between a pair of roller bearings also mounted on a shaft such an axle or spindle or the like. The intermediate portion allows the spacer to collapse in the axial direction to maintain desired axial loads on the bearings. 1. An adjustable spacer comprising:an annular spacer comprising a first end portion comprising a first material, and a second end portion opposite said first end portion; andan intermediate portion of said annular spacer located between said first end portion and said second end portion, said intermediate portion comprising a second material of lesser hardness than the first material and more deformable than that first material.2. The spacer of wherein the second material is similar to the first material.3. The spacer of wherein the second material is different than the first material.4. The spacer of wherein the second end portion comprises a material which is harder than the second material.5. The spacer of wherein the first end portion and second end portion comprise the first material.6. The spacer of wherein said first end portion and second end portion are formed separately from said first end portion or second end portion to be assembled together.7. The spacer of wherein the intermediate portion is formed separately from said first end portion and second end portion.8. An assembly comprising:a shaft;an annular spacer mounted on said shaft, said annular spacer comprising a first end portion comprising a first material and a second opposite end portion; andan intermediate portion of said annular spacer, located between said first end portion and said second end portion, said intermediate portion comprising a second material of lesser hardness than the first material and more deformable than the first material.9. The assembly of wherein the second material is different than the first material.10. The assembly of wherein the second end portion comprises a ...

METHOD FOR PRODUCING A COMPONENT FROM STEEL BY HOT FORMING

The invention relates to a method for producing a component from transformable steel by hot forming, in which a plate first is cut out of a strip or sheet as the pre-material, and is then heated to forming temperature and pre-formed, having an at least partially martensitic transformation structure after forming. Instead of a press mould hardening, the at least partially martensitic transformation structure is created in the pre-material, or in the plate to be formed, by austenitisation and quenching already before forming, and then the thus-conditioned plate is reheated after forming, while maintaining the at least partially martensitic transformation structure, to a temperature below the Ac1 transformation temperature, and formed at this temperature. 117-. (canceled)18. A method for the production of a component from malleable steel , comprising:cutting to size a blank as source material from a strip or metal sheet;austenitizing and quenching the blank to produce an at least partly martensitic transformation microstructure;{'sub': '1', 'heating the blank to a forming temperature below the Actransformation temperature, while maintaining the at least partly martensitic transformation microstructure; and'}{'sub': '1', 'forming the blank at the forming temperature below the Actransformation temperature.'}19. The method of claim 18 , further comprising coating the blank with a metallic coating.20. The method of claim 18 , wherein austenitizing and quenching includes heating the blank to an austenitizing temperature within a continuous or discontinuous annealing process claim 18 , and subsequently quenching the blank.21. The method of claim 20 , wherein the continuous annealing process is a run-through annealing process.22. The method of claim 21 , further comprising applying a coating on the blank by a hot dip process after the run-through annealing process.23. The method of claim 18 , further comprising tempering the blank after undergoing quenching.24. The method of ...

TOOLING FOR STRESS RELIEVING A TURBINE WHEEL AND SHAFT

A tool system for stress relieving a turbocharger turbine wheel longitudinally welded to a hardened rotor shaft. The shaft has a journal bearing region and a turbine-end body forming an A datum surface for receiving an axial bearing. The tool system includes an induction coil and an electronic oscillator, and a tool. The tool forms an opening configured to receive the rotor shaft such that the journal bearing region of the shaft extends into the tool housing while the A datum surface adjoins an end of the tool housing. The induction coil is positioned around the turbine-end body. The housing forms an annular cooling chamber surrounding the journal bearing region of the shaft. The housing forms an inlet passage to provide cooling fluid to the annular chamber, and an outlet passage to remove cooling fluid from the annular chamber. 1. A tool system for stress relieving a turbocharger turbine wheel longitudinally welded to an end region of a hardened rotor shaft , the shaft having a journal bearing region of the shaft for receiving at least one radial journal bearing , and the shaft having a turbine-end body forming an A datum surface for receiving an axial bearing , comprising:an electromagnetic induction coil;an electronic oscillator electronically attached to the induction coil, and being adapted to drive the induction coil with alternating current to create an alternating electromagnetic field; anda tool, including a tool housing;wherein the tool forms an opening sized to receive the rotor shaft such that the journal bearing region of the shaft extends into the tool housing while the A datum surface adjoins an end of the tool housing;wherein the induction coil is sized to be positioned around the turbine-end body such that an electromagnetic field from the induction coil surrounds the turbine-end body of the hardened rotor shaft;wherein, with the rotor shaft received in the opening of the tool, the housing forms an annular cooling chamber surrounding the journal ...

APPARATUS FOR LASER MATERIALS PROCESSING

An apparatus for laser materials processing including a laser () for generating a laser beam and a laser head () which is movable along at least one spatial direction and is connected to the laser via a light guide, and which emits a laser beam () capable of processing a material. The present invention also relates to an apparatus for selective laser melting or selective laser sintering having an apparatus for laser materials processing. 1. A method for operating an apparatus for laser materials processing , the apparatus including a laser for generating a laser beam; and a laser head movable along at least one spatial direction and connected to the laser via a light guide , the laser head emitting a laser beam capable of processing a material , wherein the laser head includes a suction device , the method comprising:processing the material using the laser beam, the processing creating gas fumes; anddrawing the gas fumes away using the suction device.2. The method as recited in wherein the processing includes moving the laser head translationally along at least two independent spatial directions.3. The method as recited in wherein the laser head is translationally moved within or along a plane.4. The method as recited in wherein the laser is a fiber laser.5. The method as recited in wherein the suction device creates a suction flow parallel to the direction of the laser beam.6. The method as recited in wherein the suction device creates a suction flow offset from the laser beam.7. The method as recited in wherein the suction flow is concentric with the laser beam.8. The method as recited in wherein the apparatus further includes a temperature conditioning device.9. The method as recited in wherein the temperature conditioning device includes a heater.10. The method as recited in wherein the heater includes an induction coil.11. The method as recited in wherein the induction coil is disposed around the laser beam.12. The method as recited in wherein the induction ...

TEMPERATURE-CONTROL STATION WITH HEATING BY INDUCTION

A temperature-control station of a thermoforming assembly for hot forming and press hardening a metallic structure includes a heat source in the form of at least one flat inductor which is provided on a lower tool and/or upper tool. A temperature-control plate is placed upon the inductor for support of the structure. The temperature-control plate is configured to accommodate at least one cooling channel for passage of a gaseous coolant so that two zones of the structure are adjustable to temperatures that are different from one another. 1. A temperature-control station , comprising:a member selected from the group consisting of a lower tool and an upper tool;a heat source in the form of at least one flat inductor provided on the member; anda temperature-control plate placed upon the inductor for support of a structure, said temperature-control plate being configured to accommodate at least one cooling channel for passage of a gaseous coolant so that two zones of the structure are adjustable to temperatures that are different from one another.2. The temperature-control station of claim 1 , wherein the heat source includes two of said flat inductor arranged side-by-side on the member and forming a flat inductor field.3. The temperature-control station of claim 1 , wherein the temperature-control plate is formed of at least two parts spaced to define a gap there between.4. The temperature-control station of claim 3 , further comprising insulating material arranged in the gap.5. The temperature-control station of claim 3 , wherein the cooling channel is arranged in close proximity to the gap.6. The temperature-control station of claim 1 , wherein the temperature-control plate has a plurality of cooling channels spaced from one another such as to define a cooler zone.7. The temperature-control station of claim 3 , wherein the temperature-control plate has a plurality of cooling channels positioned with successively increasing distance to the gap and having a cooling ...

LOCALIZED HEAT TREATMENT

Embodiments are described herein of a bifurcated heat treatment apparatus and methods for localized heat treatment of a golf club hosel or golf club head. The heat treating method comprises a bifurcated process in which the golf club head is treated in the first heating unit via induction heating and then moved to the second heating unit for convection heating. Both steps are to localize the hosel heat treatment. The heat treatment apparatus may also include a cooling component, such as a heat sink, to ensure the body of the club head remains at the correct temperature during the second heating stage when the hosel is heated in isolation. The overall bifurcated method and apparatus of the localized heat treatment leads to a hosel or golf club head with at least two different hardness values to allow for manipulation of the material without cracking or fracturing. 1. An apparatus comprising: a power supply;', 'a coiled tube coupled to the power supply at a first end of the coiled tube and a second end of the coiled tube; and', 'a device, wherein the device is configured to position a hosel of a golf club head inside a first localized heating area within the coiled tube;, 'a first heating unit located at a first position and a second heating unit located at a second position adjacent to the first position, wherein the first heating unit is an induction heater comprising an electric heater including a second localized heating area; and', 'a device wherein the device is configured to position the hosel of the golf club head in the second localized heating area of the electric heater., 'wherein the second heating unit comprises2. The apparatus of wherein claim 1 , the first and second heating units have temperature ranges of approximately 740-860° C. for a 17-4 steel alloy or approximately 640-800° C. for a 431 steel alloy claim 1 , carbon steel alloy claim 1 , or Chromium-Molybdenum steel alloy.3. The apparatus of wherein claim 1 , the second heating unit further ...

Method and System for Selectively Softening Hot Stamped Parts by Induction Heating

A method and system are disclosed for treating a press hardened part by induction heating localized areas of the part to have reduced hardness. The method and system monitor an ambient temperature, cycle time, outgoing part property requirements, and outgoing part hardness in local areas. A time value and temperature value are set by a computer system for a plurality of induction heaters. A local area of the part is induction heated to soften the part in localized areas. The hardness of the localized areas is tested after induction heating. 1. A method of treating a press hardened part comprising:monitoring an ambient temperature, system inputs including cycle time and outgoing part property requirements, outgoing part hardness in local areas, and at least one table of material properties;setting a time value and temperature value for a plurality of induction heaters;induction heating a local area of the part; anddetermining outgoing part hardness of the local area of the part after induction heating.2. The method of further comprising:determining a temperature distribution of the part following induction heating.3. The method of further comprising:determining a temperature distribution of the part following a hot stamping operation and prior to induction heating.4. The method of further comprising:imaging the part thermally following induction heating.5. The method of further comprising:imaging the part thermally following a hot stamping operation and prior to induction heating.6. The method of further comprising:measuring a material property of the outgoing part and converting the measurement of the material property to a hardness value;providing the hardness value to a computer system; andsetting the time value and temperature value for the induction heaters for a subsequent part.7. The method of further comprising:measuring a material property of a part during induction heating to obtain a real-time in process temperature distribution data; andproviding the real ...

POWDER-BED ADDITIVE MANUFACTURING DEVICES AND METHODS

The disclosure relates to an apparatus for manufacturing a metallic component, and corresponding methods. The apparatus may include a build plate with a build surface and an aperture. The apparatus may also include an actuator operable to translate a metallic component such that an end portion of the metallic component is positioned within the aperture of the build plate and below the build surface. The apparatus may further include a seal coupled within the aperture of the build plate and configured to engage the end portion of the metallic component. The aperture of the build plate, the seal, and the end portion of the metallic component may cooperate to form a powder bed to hold metallic powder therein. The apparatus may also include an external heat control mechanism operable to form a predetermined temperature profile of the end portion of the component to prevent cracking of the component. 1. An apparatus for manufacturing a metallic component or portion thereof , comprising:a build plate including a build surface, a bottom surface and an aperture extending through the build plate between the bottom surface and the build surface;an actuator operable to translate a metallic component with respect to the build plate such that an end portion of the metallic component is positioned within the aperture of the build plate and below the build surface;a seal coupled within the aperture of the build plate and configured to engage the end portion of the metallic component; andan external heat control mechanism positioned proximate to the bottom surface of the build plate and operable to form a predetermined temperature profile of the end portion to prevent cracking of the component,wherein the aperture of the build plate, the seal, and the end portion of the metallic component cooperate to form a powder bed configured to hold metallic powder of a predetermined composition therein.2. The apparatus of claim 1 , wherein the aperture of the build plate includes a first ...

HEAT-PROCESSING DEVICE AND HEAT-PROCESSING METHOD

Provided is a heat treatment apparatus (), including: a heating unit (), which is configured to inductively heat a workpiece (W) to a target temperature; and a drive mechanism, which is configured to move a plurality of the coaxially held workpieces (W) relative to the heating unit () being in an energized state in an axial direction of the workpiece (W), wherein the heating unit () includes: a plurality of coil members () respectively including a ring-shaped coil portion () arranged coaxially with the workpiece (W) so as to be capable of surrounding the workpiece (W); and a frame body (), which is configured to support each of the plurality of coil members () so as to be movable in the axial direction of the workpiece while maintaining the coaxial arrangement between the coil portions (). 1. A heat treatment apparatus , comprising:a heating unit, which is configured to inductively heat a workpiece to a target temperature; anda drive mechanism, which is configured to move a plurality of the coaxially held workpieces relative to the heating unit being in an energized state in an axial direction of the workpiece, a plurality of coil members respectively including a coil portion arranged coaxially with the workpiece so as to be capable of surrounding the workpiece, each parts of the coil portion in an extending direction of the coil portion being positioned on the same plane; and', 'a frame body, which is configured to support each of the plurality of coil members so as to be movable in the axial direction of the workpiece while maintaining the coaxial arrangement between the coil portions., 'wherein the heating unit comprises2. The heat treatment apparatus according to claim 1 , wherein the heating unit further comprises a connecting component claim 1 , which is configured to electrically connect two of the plurality of coil members being adjacent to each other in the axial direction of the workpiece.3. The heat treatment apparatus according to claim 2 , wherein the ...

METHOD FOR PRODUCING A METAL STRIP BY CASTING AND ROLLING

A method for producing a metal strip () by casting and rolling, wherein first a slab () is cast in a caster () by dispensing metal from a mold (), wherein the slab () is deflected from the vertical direction to the horizontal direction in the region of a strand guide (), wherein the slab () is then tempered in a furnace (), wherein the slab () is rolled in a rolling train () after the furnace () and wherein the slab () is processed either in discontinuous batch operation or in continuous or semi-continuous operation in dependence on a specified manner of operation. According to the invention, in order to create optimal process conditions for all desired operating modes, the slab () to be rolled or the metal strip () being rolled is subjected to heating in the region of the rolling train () at least between two roll stands () by means of an inductor (). 1132435363763. Method of producing a metal strip () by casting and rolling , wherein first a slab () is cast in a caster () by dispensing metal from a mold () , wherein the slab () is deflected from a vertical direction to the horizontal direction in a region of a strand guide () , wherein the slab () is the tempered in a furnace () , wherein the slab () is rolled in a rolling train () after the furnace () , and wherein , the slab () is processed either in discontinuous batch operation or in continuous or semi-continuous operation in dependence on a specified manner of operation , characterized in that{'b': 3', '1', '7', '8', '9', '10', '11', '12', '13', '14', '15, 'the slab () to be rolled or the metal strip () being rolled is subjected to heating in the region of the rolling train () at least between two roll stands (, , , , , , ) by means of an inductor ().'}271589. The method of claim 1 , characterized in that the rolling train () is a tandem rolling train claim 1 , wherein heating takes place claim 1 , by the inductor () located claim 1 , viewing in the transportation direction claim 1 , between first two rolling ...

A METHOD FOR HEAT TREATING AN IRON-CARBON ALLOY

The present disclosure discloses a method for heat treating an iron-carbon alloy. The method comprises acts of heating the iron-carbon alloy to a first pre-determined temperature at a pre-determined heating rate, holding the iron-carbon alloy at the first pre-determined temperature for a pre-set period of time. The method further comprises acts of cooling the iron-carbon alloy to a second pre-determined temperature at a pre-determined cooling rate and inducing magnetic field on the iron-carbon alloy selectively during at least one of heating and cooling of the iron-carbon alloy. The induction of magnetic field on the iron-carbon alloy results in microstructural changes to improve formation of pearlitic structure in the iron-carbon alloy. 1. A method for heat treating an iron-carbon alloy , the method comprising acts of:heating, the iron-carbon alloy to a first pre-determined temperature at a pre-determined heating rate;holding, the iron-carbon alloy at the first pre-determined temperature for a pre-set period of time;cooling, the iron-carbon alloy to a second pre-determined temperature at a pre-determined cooling rate; andinducing, magnetic field on the iron-carbon alloy during the heating and the cooling of the iron-carbon alloy, to improve formation of pearlitic structure.2. The method as claimed in comprises act of selectively inducing the magnetic field on the iron-carbon alloy during holding of the iron-carbon alloy at the first pre-determined temperature for the pre-set period of time.3. The method as claimed in claim 1 , wherein the first predetermined temperature is above austenization temperature of the iron-carbon alloy.4. The method as claimed in claim 1 , wherein the first pre-determined temperature ranges from about 800° C. to about 1000° C.5. The method as claimed in claim 1 , wherein the pre-determined heating rate ranges from 0.01° C./second to about 5° C./second.6. The method as claimed in claim 1 , wherein the pre-set period of time ranges from ...

METHOD FOR PRODUCING A METAL STRIP IN A CAST-ROLLING INSTALLATION

A method for producing a metal strip in a cast-rolling installation, the cast-rolling installation includes the following: a casting machine, a first furnace, a first shear, a roughing train, a second furnace, a second shear, a finishing train, a cooling section, a reeling system, and a third shear. In order to allow a flexible reaction to different operating conditions, at least one of the following operating modes is selected in order to produce the strip: a) a continuous rolling, in which the casting machine, the roughing train, and the finishing train are operatively connected together; b) a continuous rolling in the roughing train and a single-strip rolling in the finishing train; c) a single-strip rolling in the roughing train and a single-strip rolling in the finishing train; and d) a semi-continuous rolling in the roughing train and/or a semi-continuous rolling in the finishing train. 112-. (canceled)13. A method for producing a metallic strip in a cast-rolling installation , wherein the cast-rolling installation comprises:a casting machine for casting a slab;a first furnace and/or a first rolling table damping section, either or both following in a conveying direction of the metallic strip of the casting machine;a first shear disposed between the casting machine and the first furnace and/or the first rolling table damping section;a roughing train having a number of roll stands;a second furnace and/or a second rolling table damping section, either or both following in the conveying direction of the metallic strip of the roughing train;a second shear disposed between the roughing train and the second furnace and/or the second rolling table damping section;a finishing train having a number of roll stands;a cooling section;a reeling installation having at least two reels or one reversing reel; anda third shear disposed between the cooling section and the reeling installation,the method including choosing one of the following operating modes for producing the ...

METHOD FOR PRODUCING A CAMSHAFT

A method for producing a camshaft may include: providing at least two metallic components; and welding the at least two components to one another via a combined induction/friction welding method. According to an implementation, one of the at least two components is a camshaft tube and the other of the at least two components is a drive element. 1. A method for producing a camshaft comprising:providing at least two metallic components; andwelding the at least two components to one another via a combined induction/friction welding method.2. The method according to claim 1 , wherein providing the at least two components includes arranging a drive element as one of the at least two components on a longitudinal end of a camshaft tube as the other of the at least two components.3. The method according to claim 1 , wherein the combined induction/friction welding method includes:heating opposite surfaces of the at least two components via an induction heater to a predetermined temperature that is greater than a re-crystallization point of the at least two components in a non-oxidizing atmosphere;continuously moving at least one component relative to the other component of the at least two components parallel to the opposite surfaces;bringing together the opposite surfaces of the at least two components to be connected to one another with an axial force while at least one of the at least two components is in motion to weld the opposite surfaces of the at least two components to one another, wherein at least approximately 90% of the welding energy is contributed by the induction heater and the equalizing welding energy is contributed by common friction welding, and wherein a loss of total length of the at least two components is less than 1.0 axial millimeters per millimeter of a wall thickness of the at least two components.4. The method according to claim 3 , wherein heating the opposite surfaces of the at least two components to the predetermined temperature is performed ...

CARTRIDGE CASE INDUCTION ANNEALING APPARATUS

The invention relates to an induction annealing apparatus able to anneal cartridge cases to improve their reusability. The apparatus may comprise a power supply unit and a plurality of annealing units, each comprising a magnetic core having ends separated by an air gap. An induction coil is wound around the magnetic core to generate a magnetic field in the air gap. A cartridge case holder holds the cartridge case such that the neck of the cartridge case is positioned in one of the air gaps. The power supply unit selectively connects to the annealing units to supply power for a predetermined length of time, and the size of the air gap of the magnetic cores of each of the annealing units may differ. In other embodiments, the size of the air gap may be adjustable, a temperature sensor or a ferrite stake may be provided. 1. A system for induction annealing a neck of a cartridge case , the system comprising:a power supply unit comprising a power supply controller; and a magnetic core having a first end and a second end separated by an air gap;', 'an induction coil wound around the magnetic core and configured to generate a magnetic field in the magnetic core and the air gap; and', 'a power supply connector electrically connected to the induction coil;, 'a plurality of annealing units, each annealing unit comprisingthe system further comprising a cartridge case holder for holding the cartridge case such that the neck of the cartridge case is positioned in one of the air gaps,wherein the power supply unit is configured to be selectively electrically connected to the power supply connector of any one of the annealing units,wherein the power supply controller is operable to supply power to the annealing unit connected to the power supply unit for a predetermined length of time, andwherein the size of the air gap of the magnetic cores of each of the annealing units differs.2. A system as claimed in claim 1 , wherein the power supply controller is operable to select the ...

Induction heating device of blank

An induction heating device of a blank is provided. The device includes an induction heating member that is disposed on a table while being spaced apart from an inducting heating target by a predetermined interval. Additionally, a power unit is configured to supply power to the induction heating member to cause the induction heating member to heat a part of the induction heating target and a cooling unit is configured to cool the induction heating member.

Induction Hardening Apparatus, Induction Hardening Method, Induction Heating Coil, Heat Treatment Apparatus, and Heat Treatment Method

According to an embodiment, an induction heating coil includes a heating conductor portion which is formed of a conductor member and has a zigzag shape in which a bent portion opened to one side in a first direction and a bent portion opened to the other side in the first direction are alternately continuously arranged in opposite directions along a second direction crossing the first direction 1. An induction hardening method comprising a moving and heating step of arranging heating coils , which have heating conductor portions that inductively heat different parts of a treatment target portion of a treatment object in an axial direction crossing a circumferential direction , to face at least a part of the treatment target portion and relatively moving the treatment target portion and the heating coils along the circumferential direction of the treatment target portion while performing a heat treatment on the treatment target portion using the heating coils ,respective regions of the treatment target portion being heated by the heating conductor portions of the heating coils form one continuous heating region,at least one of the heating coils having a zigzag shape in which a bent portion opened to one side in the axial direction and a bent portion opened to the other side in the axial direction are alternately continuously arranged in opposite directions along the circumferential direction.2. The method according to claim 1 , comprising a cooling step of cooling the treatment target portion after the moving and heating step with respect to a whole stroke of the treatment target portion in the circumferential direction.3. An induction heating coil claim 1 , comprising:a heating conductor portion which faces at least a part of a treatment target portion and performs a heat treatment for the treatment target portion while relatively rotationally moving with respect to the treatment target portion, the heating conductor portion comprising a conductor portion that ...

Induction Heat-Treating Apparatus and Process

An apparatus for induction heat treating and quenching a metallic part with rolls to convey, guide and restrain the part during processing. The apparatus includes a heating coil assembly with two sections of coils wound in opposite directions. The apparatus may include a quenching station with individual quenching sections having different pressures and flows of a liquid. A process for induction heat treating and quenching a metallic part in a series of rolls includes induction heating the part in a counter-wound coil assembly; quenching the part with a liquid while under restraint, and induction heating the part again after quenching. Controlling varying speed and the proximity of the metallic part to the coil assembly is ideal. 1. A process for induction heat treating including quenching a metallic part of a vehicle structural frame in an apparatus , the process comprising:controlling speed of the part through the apparatus;induction heating the part in a counter-wound coil assembly;quenching the part with a liquid while under restraint, including the step of restraining the part in a series of restraining rolls during quenching; andinduction heating the part again after quenching.2. The process of wherein an exit speed of the part from the apparatus differs from an entrance speed of the part into the apparatus.3. The process of wherein the quenching occurs in individual quenching sections with different pressures and flows.4. The process of wherein the quenching is done longitudinally and perpendicularly.5. The process of wherein proximity of the part to the coil assembly is controlled by a computer.6. The process of in which induction heating after quenching is done in a counter-wound coil assembly with heating coil sections wound in opposite directions to temper the part.7. The process of including a step of controlling speed and acceleration of the part through the apparatus with rolls.8. The process of further comprising a step of controlling proximity of the ...

HEAT TREATMENT DEVICE, HEAT TREATMENT METHOD, AND RAIL STEEL

An object of the present invention is to provide a heat treatment device, a heat treatment method, and a rail steel which are suitable for preventing the occurrence of brittle fractures which originate in a base portion of a weld of the rail steel. A heat treatment device of the present invention includes a coil and heats a bottom surface of the base portion of the weld of the rail steel by induction heating. When a region in the weld which is heated to an Ac1 point or higher during welding is represented by HAZ, and the length of the HAZ in a length direction of the rail on the bottom surface of the base portion is represented by Lh, and a width of the rail steel is represented by W, the length of an outer region of the coil in the length direction of the rail is 1.2 times or more Lh and the length of the outer region of the coil in a width direction of the rail is 1.1 times or more W when viewed from opposite the bottom surface of the base portion. 1. A heat treatment device which includes a coil and heats a bottom surface of a base portion of a weld of a rail steel by induction heating ,wherein when a region in the weld which is heated to an Ac1 point or higher during welding is represented by HAZ, and a length of the HAZ in a length direction of the rail on the bottom surface of the base portion is represented by Lh, and a width of the rail steel is represented by W,when viewed in a line of sight against the bottom surface of the base portion, a length of an outer region of the coil in the length direction of the rail is 1.2 times or more Lh and a length of the outer region of the coil in a width direction of the rail is 1.1 times or more W.2. The heat treatment device according to claim 1 ,wherein the length of the outer region of the coil in the length direction of the rail is 40 mm or more.3. The heat treatment device according to claim 1 ,wherein the length of the outer region of the coil in the width direction of the rail is 1.2 times or more W.4. The heat ...

Process for Local Hardening

A process for the local hardening of a workpiece by means of local induction hardening includes performing a local perlitization grain transformation on the workpiece after a local inductive diffusion heat treatment and before a local induction hardening on the workpiece. 1. A process for the local hardening of a workpiece comprising:performing a local inductive diffusion heat treatment on the workpiece;performing a local perlitization grain transformation on the workpiece after the local inductive diffusion heat treatment; andperforming a local induction hardening on the workpiece after preforming the local perlitization grain transformation on the workpiece.2. The process according to claim 1 , wherein a duration of the local inductive diffusion heat treatment is brief compared to a duration of the local induction hardening.3. The process according to claim 2 , wherein a duration of the local perlitization grain transformation is comparable to the duration of the local induction hardening.4. The process according to claim 3 , wherein the local diffusion heat treatment is carried out at a temperature which is the same or slightly lower than a temperature at which the local induction hardening is carried out.4. The process according to claim 4 , wherein the local perlitization grain transformation is carried out at a temperature which is significantly lower than the temperature at which the local induction hardening is carried out.6. The process according to claim 3 , wherein the local perlitization grain transformation is carried out at a temperature which is significantly lower than a temperature at which the local induction hardening is carried out.7. The process according to claim 3 , whereinthe local diffusion heat treatment is carried out at a temperature which is the same or slightly lower than a temperature at which the local induction hardening is carried out; andthe local perlitization grain transformation is carried out at a temperature which is ...

TRACK LINK FOR A TRACK JOINT ASSEMBLY HAVING WEAR BAND WITH LENGTHWISE-VARIED HARDNESS

A track link for a ground-engaging track system includes an elongate link body having an upper rail surface located in part upon each of a first link strap, a second link strap, and a middle section of the track link. The upper rail surface is formed by a wear band of sacrificial wear material having a hardness that is varied lengthwise along the upper rail surface to retard scalloping of the track link during service and forming relatively softer zones in the first and second link straps and a relatively harder zone within the middle section. Methodology for making such a track link is also disclosed. 1. A track link for a ground-engaging track system in a machine comprising:an elongate link body including a first link strap having a track pin bore formed therein, a second link strap having a bushing bore formed therein, and a middle section connecting between the first link strap and the second link strap;the elongate link body further including a lower shoe-mounting surface, and an upper rail surface, the upper rail surface being located in part upon each of the first link strap, the second link strap, and the middle section, and formed by a wear band of sacrificial wear material; andthe sacrificial wear material having a hardness that is varied lengthwise along the upper rail surface to form a first relatively softer zone located in the first link strap, a second relatively softer zone located in the second link strap, and a relatively harder zone located at least in part within the middle section.2. The track link of wherein the relatively harder zone extends into each of the first link strap and the second link strap.3. The track link of wherein the relatively harder zone is continuous.4. The track link of wherein a lengthwise extent of the relatively harder zone within each of the first link strap and the second link strap is about 20% or less of a full length of the upper rail surface within the corresponding first or second link strap.5. The track link of ...

INDUCTION HARDENED PROCESSING SHAFT AND METHOD OF MAKING SAME

An induction hardened processing shaft of a part-processing apparatus and method of manufacturing includes exposing a shaft to a partial induction hardening process. An induction hardening process may be applied to only the portion of the shaft that may be exposed to processing spray or shot peening material. The portion of the shaft exposed to induction hardening will include a harder surface material that can better withstand its composition and structure during impact, minimizing or reducing the amount of wear on the surface from exposure to processing material utilized in the part-processing apparatus. By limiting the induction hardening process to less than the full length of the shaft, the shaft is less likely to experience substantial deformation, and further permits screws and fasters to be driven into the shaft to secure the shaft at specific locations with the processing apparatus. 1. A part processing assembly comprising a support shaft configured to support a part within the processing assembly , the support shaft including a first section extending into a processing field of the processing assembly and a second section extending outside of the processing field , wherein , before installation in the processing assembly , at least a portion of the first section is subjected to an induction hardening technique and the second section is not subjected to an induction hardening technique.2. The part processing assembly of claim 1 , wherein the support shaft is configured to rotate a part within the processing assembly.3. The part processing assembly of claim 2 , wherein the support shaft is coupled to a spindle assembly claim 2 , the spindle assembly located outside of the processing field.4. The part processing assembly of claim 3 , wherein the support shaft is coupled to the spindle assembly through screws or fasteners inserted into the support shaft.5. The part processing assembly of claim 3 , wherein the spindle assembly rotates the support shaft as parts ...

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- ...

APPARATUS AND METHODS FOR THE DRYING TREATMENT OF AN INDUCTOR

An apparatus for the off-line drying treatment, or dry out, of an inductor for billets that includes a coil and a protection body made of refractory material that defines a transit channel for the billets. 1. An apparatus for the off-line drying treatment , or dry out , of an inductor for billets , comprising: a coil and a protection body made of refractory material and defining a transit channel for the billets , wherein said apparatus comprises a heating device comprising at least one electric resistance configured to transform the electrical energy received into radiant heat and to act as a false billet , wherein said electric resistance has size and characteristics correlated to the sizes and characteristics of a real billet intended to be made to pass in the transit channel of the inductor , with an oblong development along a longitudinal axis and located , during use , inside the transit channel of the inductor , a support structure configured to support said resistance cantilevered in such a way that its axis of longitudinal development is oriented substantially horizontally , power supply devices configured to supply electrical energy to said resistance , and a control and command unit configured to command said power supply devices and regulate the functioning of said resistance according to a predefined program.2. The apparatus as in claim 1 , comprising temperature detection sensors configured to detect the temperature of said resistance claim 1 , wherein said temperature detection sensors comprise at least one thermocouple associated with said at least one resistance.3. The apparatus as in claim 2 , wherein said control and command unit is configured to modulate the supply voltage of said resistance on the basis of a feedback control in a closed loop of a detected temperature of said resistance and/or of a temperature of said refractory material estimated on the basis of a thermal mathematical model of the inductor to be subjected to drying treatment.4. ...

PRODUCTION PROCESS FOR STAMPED PARTS OF HIGH MECHANICAL RESISTANCE, THROUGH CONTROLLED ELECTRIC HEATING

A production process for stamped parts carried out from bales of sheets (), a first moving robot (), a heating device () with a liquid cooling unit (), a second moving robot (), a hydraulic press () with a specific molding tool, a third moving robot (), and a conveyor belt (), controlled by an electronic control unit. Said specific molding tool is provided with channels for cooling done through heat exchange, via water circulation, where the cooling rate is controlled by means of the liquid's flow and temperature control. 1123456879) A production process for stamped parts of high mechanical resistance , through controlled electric heating , wherein a sheet (part) , from bales of sheets () , is transferred via a first moving robot () to an electric heating device () and after heating , via a second moving robot () , transferred to a specific molding tool () with a liquid cooling unit () arranged in a hydraulic press () , and after being formed , via a third moving robot () , is withdrawn as finished product , all the equipment being controlled by an electronic control unit ().23) The production process according to claim 1 , wherein the electric heating equipment () employing the joule heating theory to quickly raise the temperature of the plate (part) to values close to 900° C.355) The production process according to claim 1 , wherein the specific stamping tool () is cooled by a liquid cooling unit () containing channels for cooling claim 1 , by heat exchange via water circulation claim 1 , which promotes the phase change of the microstructure of the sheet (part) and the consequent hardening of the material claim 1 , the cooling being done at a temperature of approximately 5° C. in the channels and the water generated from a ice water unit with high nominal capacity claim 1 , and the cooling rate of the stamping tool to promote the necessary change of strength for each product claim 1 , as well as the flow rate that circulates in the stamping tool claim 1 , are ...

SEAMLESS STEEL PIPE, METHOD OF PRODUCING A HIGH STRENGTH SEAMLESS STEEL PIPE, USAGE OF A SEAMLESS STEEL PIPE AND PERFORATION GUN

According to the present invention, a seamless steel pipe for use in cases where internal pressure is applied is disclosed, the seamless steel pipe having been produced by tempering a tubular steel body at a holding temperature of >450° C., the seamless steel pipe having a length extending between a first end and a second end, the seamless steel pipe having a high burst strength and at least over part of the length having a yield strength Rp0.2 of >1050 MPa, and the seamless steel pipe having a grain structure with an average grain size of <15 μm, and the tubular steel body having been manufactured from a steel alloy, which steel alloy comprises, besides iron and inevitable impurities, the following alloying elements in mass-%: 1. A seamless steel pipe for use in cases where internal pressure is applied , the seamless steel pipe having been produced by tempering a tubular steel body at a holding temperature of >450° C. , the seamless steel pipe having a length extending between a first end and a second end , the seamless steel pipe having a high burst strength and at least over part of the length having a yield strength Rp0.2 of >1050 MPa , and the seamless steel pipe having a grain structure with an average grain size of <15 μm , and the tubular steel body having been manufactured from a steel alloy , which steel alloy comprises , besides iron and inevitable impurities , the following alloying elements in mass-%:C 0.22-0.30%Mn 0.7-1.2%Si 0.13-0.38%Cr 0.7-1.2%Mo 0.5-0.8%.2. A seamless steel pipe according to claim 1 , characterized in that the yield strength Rp0.2 over at least part of the length of the pipe is >1200 MPa.3. A seamless steel pipe according to claim 1 , characterized in that the seamless steel pipe has a martensitic structure with at least 80% tempered martensite and characterized in that the notch toughness determined according to a Charpy Test at a longitudinal sample is at least 50 J and at a transverse specimen is at least 28 J.4. A seamless steel ...

PROCESS FOR WARM FORMING A HARDENED ALUMINUM ALLOY

Described are processes for shaping a hardened heat treatable, age-hardenable aluminum alloys, such as hardened 2XXX, 6XXX and 7XXX aluminum alloys, or articles made from such alloys, including aluminum alloy sheets. The processes involve heating the article, which may be in a form of a sheet or a blank, before and/or concurrently with a forming step. In some examples, the alloy is heated to a specified temperature in the range of 125-425° C. at a specified heating rate within the range of about 3-200° C./s, for example, 3-90° C./s or 90-150° C./s. Such a combination of the temperature and the heating rate can result in an advantageous combination of article properties. 1. A process of shaping an article made from a hardened age-hardenable , heat treatable aluminum alloy , comprising:heating the article to a temperature of about 125° C. to about 425° C. at a rate between about 3° C./s to about 200° C./s; andshaping the article.2. The process of claim 1 , wherein the article is a sheet or a blank.3. The process of claim 1 , wherein the hardened age-hardenable claim 1 , heat treatable aluminum alloy is a 2XXX claim 1 , a 6XXX or a 7XXX series alloy.4. The process of claim 1 , wherein the article is heated to a temperature of about 150° C. to about 200° C.5. The process of claim 1 , wherein the article is heated at a rate between about 90° C./s to about 150° C./s.6. The process of claim 1 , wherein the article is heated at a rate between about 3° C./s to about 90° C./s.7. The process of claim 1 , wherein the article is in T6 or T61 temper before the heating step.8. The process of claim 1 , wherein the article is in T6 or T61 temper before and after the heating step.9. The process of claim 1 , further comprising a step of cooling the shaped article.10. The process of claim 9 , wherein the shaping step is a first shaping step and further comprising a second shaping step after the cooling step.11. The process of claim 10 , wherein elongation of the article resulting from ...

METHOD AND APPARATUS FOR HARDENING A COMPONENT OR SEMI-FINISHED PRODUCT

Example methods and apparatus for hardening a component or any semi-finished product formed from a steel workpiece that has been shaped in a shaping tool may involve introducing the component into a receiving region of a hardening tool. The hardening tool may then be closed around the component in a form-fitting manner so as to surround the component and maintain a substantially constant distance between the component and at least one induction coil integrated into the hardening tool. The induction coil of the hardening tool may then be used to heat the component. The component may then be cooled within the receiving region or by removing the component from the receiving region and exposing the component to air external to the receiving region. 113-. (canceled)14. A method for hardening a component formed from a steel workpiece that has been shaped in a shaping tool , the method comprising:introducing the component into a receiving region of a hardening tool;closing the hardening tool around the component so as to surround the component in a form-fitting manner and maintain a substantially constant distance between the component and at least one induction coil integrated into the hardening tool;heating the component inductively by the at least one induction coil; andcooling the component.15. The method of wherein the steel workpiece is an air-hardening steel claim 14 , wherein the step of cooling the component comprises removing the component from the receiving region of the hardening tool and exposing the component to air external to the receiving region.16. The method of wherein the step of cooling the component comprises using a coolant to cool the component within the receiving region of the hardening tool while the hardening tool is closed around the component.17. The method of further comprising maintaining the component within the receiving region of the hardening tool in the form-fitting manner during the steps of heating and cooling.18. The method of ...

METHOD FOR MANUFACTURING JOINED MEMBER AND APPARATUS FOR MANUFACTURING THE SAME

To provide a method and apparatus for manufacturing a joined member that inhibit occurrence of cracks in a joined member even when the joined portion is quenched when members are welded together. The method includes placing the first member D and the second member E with a joint target portion Df and a joint target portion Ef being in contact with each other, welding the joint target portions by heating, subjecting the first member D after the welding to a process for inhibiting occurrence of cracks, and tempering a portion where the first and second members have been welded to each other by electromagnetic heating. The apparatus includes a first electrode to contact with the first member D; a second electrode to contact with the second member E; and an induction heating coil for performing induction heating of a portion where a joint target portions Df and Ef have been contacted and joined to each other, and the induction heating coil is placed between the two electrodes and when the induction heating is performed. 1. A method for manufacturing a joined member by joining a first member formed of a metal material having a possibility of undergoing quenching and a second member formed of a metal material , the method comprising:a contact-placing step of placing the first member and the second member with a joint target portion of the first member and a joint target portion of the second member being in contact with each other;a welding step of welding the joint target portions of the first member and the second member by heating;a crack-inhibition step of subjecting the first member after the welding step to a process for inhibiting occurrence of cracks;an electromagnetic heating step of tempering a portion where the first member and the second member have been welded to each other by electromagnetic heating;wherein the welding step is a step of performing resistance welding of the joint target portions of the first member and the second member with simultaneous ...

TRIPOD UNIVERSAL JOINT FAIRWAY HEAT TREATMENT DEVICE AND HEAT TREATMENT METHOD

The present disclosure discloses a tripod universal joint fairway heat treatment device. A magnetizer includes a middle induction area and two-end induction areas, wherein the middle induction area includes magnetic conductive sheets stacked together; and the two-end induction areas include magnetic conductive sheets and magnetic conductive insulation sheets crosswise stacked together. Controllable deformation of an inner cavity fairway of a tripod universal joint during intermediate frequency quenching is realized by changing an arrangement form of the magnetic conductive sheets in the magnetizer, thereby avoiding a condition that three pivot shafts and bearing rings cannot be installed due to excessive deformation at a fairway opening after quenching, and greatly improving a qualified rate of products and safety performance of the products during use. 1. A tripod universal joint fairway heat treatment device , comprising:{'b': 1', '2', '1', '2', '3', '4', '3', '4', '5, 'at least one effective coil (), at least one magnetizer () arranged on the effective coil (); the magnetizer () comprises a middle induction area () and two-end induction areas (); the middle induction area () is provided between the two-end induction areas () and comprises magnetic conductive sheets () stacked together;'}{'b': 4', '5', '6, 'and the two-end induction areas () comprise magnetic conductive sheets () and magnetic conductive insulation sheets () crosswise stacked together.'}2644343. The tripod universal joint fairway heat treatment device according to claim 1 , wherein the quantity of the magnetic conductive insulation sheets () stacked in the two-end induction areas () is gradually decreased from one end of the two-end induction areas () far away from the middle induction area () to one end of the two-end induction areas () close to the middle induction area ().356. The tripod universal joint fairway heat treatment device according to claim 1 , wherein the magnetic conductive sheets ...

METHOD FOR PRODUCING CUTTING BLADES

Disposable cutting blades and method for producing disposable cutting blades with profiled cross sections for a device for chipping wood. The method includes heating a primary material of a hardenable material in a soft-annealed state having a worked surface to a temperature above room temperature, but below a conversion temperature Ac1, rolling the primary material to form a profile blank with at least one precisely gaged guide path in a base body in cross section and with an increased thickness of at least one edge region, a metal-removing working of at least one edge region in a longitudinal direction of the profile blank to form a cutting edge and to form scratching edges in a spaced manner directed perpendicularly to the cutting edge, and continuously hardening the edge regions of the cutting blade. 1. A method for producing disposable cutting blades with profiled cross sections for a device for chipping wood , the method comprising:heating a primary material of a hardenable material in a soft-annealed state having a worked surface to a temperature above room temperature, but below a conversion temperature Ac1;rolling the primary material to form a profile blank with at least one precisely gaged guide path in a base body in cross section and with an increased thickness of at least one edge region;a metal-removing working of at least one edge region in a longitudinal direction of the profile blank to form a cutting edge and to form scratching edges in a spaced manner directed perpendicularly to the cutting edge; andcontinuously hardening the edge regions of the cutting blade.2. The method according to claim 1 , wherein the hardenable material comprising hardenable steel or a hardenable alloy.3. The method according to claim 1 , wherein the temperature is achieved within a range of a cubic-space-centered atomic structure of the material.4. The method according to claim 1 , wherein the profile blank is rolled with an overfilled groove.5. The method according to ...

METHOD FOR MANUFACTURING JOINED MEMBER AND APPARATUS FOR MANUFACTURING THE SAME

To provide a method and apparatus for manufacturing a joined member that inhibit occurrence of cracks in a joined member even when the joined portion is quenched when members are welded together. The method includes placing the first member D and the second member E with a joint target portion Df and a joint target portion Ef being in contact with each other, welding the joint target portions by heating, subjecting the first member D after the welding to a process for inhibiting occurrence of cracks, and tempering a portion where the first and second members have been welded to each other by electromagnetic heating. The apparatus includes a first electrode to contact with the first member D; a second electrode to contact with the second member E; and an induction heating coil for performing induction heating of a portion where a joint target portions Df and Ef have been contacted and joined to each other, and the induction heating coil is placed between the two electrodes and when the induction heating is performed. 1. A method for manufacturing a joined member by joining a first member formed of a metal material having a possibility of undergoing quenching and a second member formed of a metal material , the method comprising:a contact-placing step of placing the first member and the second member with a joint target portion of the first member and a joint target portion of the second member being in contact with each other;a welding step of welding the joint target portions of the first member and the second member by heating;a crack-inhibition step of subjecting the first member after the welding step to a process for inhibiting occurrence of cracks;an electromagnetic heating step of tempering a portion where the first member and the second member have been welded to each other by electromagnetic heating;wherein the welding step is a step of performing resistance welding of the joint target portions of the first member and the second member with simultaneous ...

System and method for induction heating a helical rotor using a coil

Embodiments of the invention provide a system and method for induction heating a helical rotor of a progressing cavity pump in order to reduce the surface roughness of the rotor. In order to heat the rotor most evenly, it is desired to space the coil as closely around the rotor as possible. The invention provides a mechanism for threading the helical rotor through an induction coil having an interior diameter which is less than the major diameter of the rotor. The induction coil may include one loop and overlapping ends. The rotor to be heated is rotated about its longitudinal axis and advanced axially through the coil as it rotates. The axial speed and rotational speed are synchronized so that the rotor moves one pitch through the coil for each complete rotation.

Method and Furnace Installation for Heat Treating Metal Strip

A method for heat-treating a metal strip, where the metal strip is pre-heated continuously in a pre-heating zone with the aid of hot gas and subsequently undergoes further heat treatment in a directly fired furnace in a reducing and/or oxidizing atmosphere. The metal strip is pre-heated in the pre-heating zone with hot inert gas and further heated with an electric heating system before entering the directly fired furnace. A furnace plant for implementing the process and a related heat recovery system are also disclosed. 19-. (canceled)101. A method for treating a metal strip () , comprising:{'b': 1', '6', '3, '(a) pre-heating the metal strip () with a hot gas () in a pre-heating zone () to reach a pre-heated metal strip;'}{'b': 8', '8', '11, '(b) further heating the pre-heated metal strip after step (a) in a directly fired furnace () in one or more of a reducing atmosphere and an oxidizing atmosphere, the directly fired furnace () generating exhaust gases (), wherein'}{'b': 1', '6', '3', '5', '8', '11', '8', '6', '3, 'the metal strip () is pre-heated with the aid of inert gas () in the pre-heating zone () of step (a) and further heated by an electric heating system () before it enters the directly heated furnace () in step (b), where heat in the exhaust gases () from the directly fired furnace () is used to pre-heat the inert gas () for the pre-heating zone ().'}11. The method of claim 10 , wherein the electric heating system is an induction heating system.1213. The method of claim 10 , wherein the metal strip () is heated to more than 200° C. in the inert gas atmosphere in the pre-heating zone ().1313. The method of claim 12 , wherein the metal strip () is heated to up to approximately 300° C. in the inert gas atmosphere in the pre-heating zone ().141. The method of claim 12 , wherein the metal strip () is heated to more than approximately 350° C. by the electric heating system.151. The method of claim 14 , wherein the metal strip () is heated to more than ...

Transverse flux induction heating device

The transverse flux induction heating device allows an alternating magnetic field to intersect the sheet face of a conductive sheet which is conveyed in one direction, thereby inductively heating the conductive sheet. The transverse flux induction heating device includes a heating coil disposed such that a coil face faces the sheet face of the conductive sheet; a core around which the heating coil is coiled; and a shielding plate formed of a conductor and disposed between the core and a side end portion in a direction perpendicular to the conveyance direction of the conductive sheet, wherein the shielding plate has a protruded portion, and the side surface of the protruded portion represents a closed loop when viewed from a direction perpendicular to the coil face.

APPARATUS TO QUENCH A RING-SHAPED ARTICLE

An apparatus for quenching a ring shaped article includes a heating station for heating the ring shaped article to a quenching temperature; a primary cooling station for cooling the ring shaped article to a deformation correction initiating temperature; and a secondary cooling station for cooling the ring shaped article down to a temperature lower than a martensitic transformation point. The heating station includes a preheating station for heating by induction heating the ring shaped article to a predetermined preheating temperature near to the quenching temperature and a soaking station for heating the ring shaped article, which has been heated to the preheating temperature by the preheating station, to the quenching temperature within a continuous heating furnace. The preheating station includes a rotary table and a heating coil arranged to straddle between inner and outer peripheral surfaces of the ring shaped article. 1a heating station for heating the ring shaped article to a quenching temperature;a primary cooling station for cooling the ring shaped article, which has been heated to the quenching temperature by the heating station, down to a deformation correction initiating temperature, which is higher than a martensitic transformation point; anda secondary cooling station for cooling the ring shaped article, which has been cooled down to the deformation correction initiating temperature by the primary cooling station, down to a temperature lower than the martensitic transformation point by, while a pair of receiving rolls are held in contact with an outer peripheral surface of such ring shaped article for rolling motion about an axis of rotation, which is parallel to a center of the ring shaped article, pressing a press roll, rotatable about an axis of rotation parallel to the center of the ring shaped article, against the ring shaped article from one side of the ring shaped article opposite to a point intermediate between the receiving rolls,wherein the ...

HARDFACED METAL SURFACE AND METHOD OF MANUFACTURE

An apparatus is disclosed as including a first material volume with at least a hardened portion and a second material volume that includes at least two layers. The first material volume is composed of at least a hardenable alloy of steel. The at least two layers is located adjacent to a first surface comprising the hardened portion of the first material volume. The at least two layers includes a first layer composed of at least a ductile low-carbon alloy of steel and a second layer composed of at least a cobalt-based hardfacing over the first layer. The apparatus is applicable in preparing shear ram blocks and shear ram blades to provide a hardened blade edge with an adjacent hardfacing surface. 1. A shear ram blade comprising:a material volume comprising a hardenable alloy of steel as a base of the shear ram blade and comprising a heat-treated portion of the hardenable alloy of steel as an edge of the shear ram blade, the heat-treated portion of a different hardness than the base.2. The shear ram blade of claim 1 , further comprising:at least two layers to form an overlay located adjacent to a surface of the heat-treated portion.3. The shear ram blade of claim 2 , further comprising:at least a low-carbon alloy of steel forming a first of the at least two layers and a cobalt-based hardfacing over the first of the at least two layers to form a second of the at least two layers.4. The shear ram blade of claim 1 , further comprising:CrMoV Steel, NiCrMo Steel, or CrNiMo Steel as the material volume.5. The shear ram blade of claim 1 , further comprising:the heat-treated portion formed from an induction hardening process applied to the hardenable alloy of steel.6. The shear ram blade of claim 1 , further comprising:a transition zone formed adjacent to the heat-treated portion and in the material volume.7. A blow-out preventer (BOP) stack assembly comprising:a shear ram housing comprising at least one upper ram shear block, at least one lower ram shear block, and at least ...

HEATING APPARATUS, HEAT TREATMENT APPARATUS, AND HEATING METHOD

A heating apparatus, a heat treatment apparatus, and a heating method are provided. The heating apparatus includes a workpiece support on which a ring-shaped workpiece is placed, a rotary drive assembly, and a heater configured to heat the workpiece. The workpiece support includes a plurality of rotating rollers arranged in a circumferential direction. The rotary drive assembly is configured to rotate the plurality of rotating rollers to rotate the workpiece placed on the workpiece support along a ring shape of the workpiece. The heater includes a heating coil configured to induction-heat the workpiece on the workpiece support at a heating position, and an actuator configured to move the heating coil at the heating position relative to the workpiece to adjust a distance between the workpiece and the heating coil. 113-. (canceled)14. A heating method comprising:placing a ring-shaped workpiece on a plurality of rotating rollers arranged in a circumferential direction;setting the workpiece at a heating position to face a heating coil;moving the heating coil to adjust a position of the heating coil relative to the workpiece;rotating the rotating rollers to rotate the workpiece along a ring shape of the workpiece; andinduction-heating the workpiece.15. The heating method according to claim 14 , wherein the rotating rollers are connected to a central structure unit and arranged in the circumferential direction around the central structure unit claim 14 , and the workpiece is placed on the rotating rollers such that the workpiece surrounds the central structure unit claim 14 , the method further comprising:after the placing is carried out in a loading section, conveying the workpiece together with the rotating rollers from the loading section to a heating section, in which the heating coil is provided, such that central structure unit is suspended. The present application claims priority from Japanese Patent Applications No. 2011-057309 filed on Mar. 15, 2011, and No. 2011 ...

HEATING APPARATUS, HEAT TREATMENT APPARATUS, AND HEATING METHOD

A heating apparatus, a heat treatment apparatus, and a heating method are provided. The heating apparatus includes a workpiece support on which a ring-shaped workpiece is placed, a rotary drive assembly, and a heater configured to heat the workpiece. The workpiece support includes a plurality of rotating rollers arranged in a circumferential direction. The rotary drive assembly is configured to rotate the plurality of rotating rollers to rotate the workpiece placed on the workpiece support along a ring shape of the workpiece. The heater includes a heating coil configured to induction-heat the workpiece on the workpiece support at a heating position, and an actuator configured to move the heating coil at the heating position relative to the workpiece to adjust a distance between the workpiece and the heating coil. 115-. (canceled)16. A jig of a heating apparatus , the jig being configured to support a ring-shaped workpiece when conveying and heating the workpiece , the jig comprising:a central structure unit;a rotary drive mechanism accommodated in the central structure unit; anda workpiece support connected to the central structure unit and configured such that the workpiece is placed on the workpiece support to surround the central structure unit,wherein the workpiece support comprises a plurality of rotating rollers arranged in a circumferential direction around the central structure unit,wherein the central structure unit comprises:a conveyor connecting portion configured to suspend the workpiece support together with the workpiece placed on the workpiece support; anda driver connecting portion from which a driving force is input to the rotary drive mechanism, andwherein the rotary drive mechanism is configured to rotate the rotating rollers by the driving force to rotate the workpiece along a ring shape of the workpiece.17. The jig according to claim 16 , wherein the driver connecting portion is disposed above the workpiece supported on the workpiece support.18. ...

STRUCTURAL MEMBER FOR AUTOMOBILE BODY

A deformed part in a case in which the application of a collision load causes bending deformation in a structural member for an automobile body having a hardness distribution (strength distribution) composed of a quenched part, a base metal hardness part, and a transition part in a longitudinal direction is used as the base metal hardness part to avoid plastic strain concentration in the quenched part. 1. A structural member for an automobile body comprising:a hollow steel main body having a closed cross section, a quenched part subjected to quenching;', 'a base metal hardness part having a same hardness as a hardness of a base metal; and', 'a transition part provided between the quenched part and the base metal hardness part in the axial direction, a strength of the transition part changing from a strength of the base metal harness part to a strength of the quenched part;, 'the hollow steel main body having, in an axial direction {'br': None, 'sup': −1', '−1, 'i': 'LA/I≦', '0.006 (mm)<0.2 (mm) \u2003\u2003(1).'}, 'in a case in which a cross-sectional area of the main body is A and a moment of inertia of area of the main body is I, a length L of the transition part in the axial direction satisfies the relationship of the following equation (1)2. The structural member for an automobile body according to claim 1 , wherein a tensile strength of the base metal hardness part is 700 MPa or less claim 1 , and a tensile strength of the quenched part is 1470 MPa or more.3. The structural member for an automobile body according to claim 1 ,wherein respective hardness distributions of the quenched part, the base metal hardness part, and the transition part in the vertical cross section to the axial direction are substantially constant.4. The structural member for an automobile body according to claim 1 , further comprising:a to-be welded part which is provided in the base metal hardness part or the transition part and is to be welded to another structural member for an ...

ADJUSTABLE SPACER WITH HARDENED ENDS

An adjustable spacer with hardened end portions and a non-hardened intermediate portion therebetween is mountable between a pair of roller bearings also mounted on a shaft such an axle or spindle or the like. The hardened material contacts the faces of the roller bearings but helps prevent wear therebetween and unwanted movement of the bearings on the shaft. The unhardened material allows the spacer to collapse in the axial direction to maintain desired axial loads on the bearings. 1. An adjustable spacer system comprising:an annular spacer configured to be mounted on a shaft to apply a force to one or more roller bearings mounted on said shaft, the annular spacer comprising a first end portion and a second end portion opposite said first end portion, the first end portion and the second end portion of said annular spacer comprising a hardened material; andan intermediate portion of said annular spacer located between said first end portion and said second end portion, said intermediate portion comprising a non-hardened material, the intermediate portion being more deformable than that first end portion.2. The system of wherein said annular spacer is configured to be assembled on a shaft between two roller bearings to apply a force axially on said two roller bearings.3. The system of wherein the first end portion comprises a first face exposed in an axial direction claim 2 , the first face being formed of a hardened material.4. The system of wherein the second end portion comprises a second face exposed in an axial direction claim 3 , the second face being formed of a hardened material.5. The system of wherein said annular spacer is formed from a first starting material and wherein the first end portion and second end portion are hardened from said first starting material.6. The system of wherein said first end portion and second end portion are hardened without hardening the intermediate portion of said annular spacer.7. The system of wherein the intermediate ...

High Strength Iron-Based Alloys, Processes for Making Same, and Articles Resulting Therefrom

A new iron based alloy prepared by extremely rapid heating followed substantially immediately by extremely rapid cooling. Methods and materials made by optionally initially spheroidized annealing of raw iron based alloys into a precursor material are disclosed. After optional spheroidized annealing, the precursor material is rapidly heated to a temperature above the austenitizing temperature of the material and rapidly cooled to yield a high strength iron based alloy. Methods and materials for realizing a corrosion resistant high strength iron based alloy are disclosed, as are methods, materials and articles which exhibit the ability to form bend radii of nearly folding over itself. 1. A method to produce an advanced high strength steel in excess of 900 megapascals from plain carbon, or minimally alloyed steel which is capable of bend radii less of less than two material thickness. This application claims the benefit of priority of the following Provisional Patent Applications: Appln. No. 62/013,396, filed Jun. 17, 2014, Appln. No. 62/093,731, filed Dec. 18, 2014 and Appln. No. 62/100,373, filed Jan. 6, 2015.Not ApplicableNot ApplicableU.S. patent application Ser. No. 14/404,007, filed Nov. 25, 2014U.S. Pat. No. 8,480,824 B2, Issued Jul. 9, 2013U.S. patent application Ser. No. 12/485,785, filed Jun. 16, 2009U.S. patent application Ser. No. 12/444,242, filed Apr. 3, 2009This invention relates to advanced high strength iron-based alloys, and more particularly relates to processes for transforming and/or shaping the same. Such alloys are capable of being formed to minimal bend radii and can be obtained by treating low, medium, and high carbon steel. Such iron based alloys can also be designed to be corrosion resistant by phosphoric alloying while avoiding grain boundary embrittlement.Traditionally, metallurgists have wanted to take low quality metals, such as low carbon steel, and turn them into high quality steels and more desirable products through inexpensive ...

HEATING COIL AND QUENCHING DEVICE

To provide a heating coil and a quenching device that are capable of stably forming an unquenched region at an opening side end of a roller guide groove, and to reduce the manufacturing cost of a tripod type constant velocity joint and its outer ring. 1. A heating coil used for induction heating of a roller guide groove formed on an inner peripheral surface of an outer ring of a tripod type constant velocity joint , comprising:a coil body inserted into the outer ring through an opening on one end side of the outer ring; anda plurality of shield members disposed to face an inner peripheral surface of an opening side end of the outer ring, whereinthe coil body includesthree heaters that are disposed at intervals in a circumferential direction around a central axis and each housed in the roller guide groove, andthree connectors that are interposed between the two heaters adjacent to each other in the circumferential direction and project from the opening of the outer ring, the three connectors connecting the three heaters in series with a power supply,the heater has a first heating conductor and a second heating conductor disposed to face each other on both side surfaces of the roller guide groove, which are a pair of heating conductors extending along the central axis,the connector has a first connection conductor extending from the second heating conductor of one heater of the two heaters adjacent to each other in the circumferential direction, and a second connection conductor extending from the first heating conductor of another heater, which are a pair of connection conductors extending along the central axis,the shield member is provided for each of the connectors, and is disposed between the first connection conductor and the second connection conductor of the connector, anda circumferential distance between the first connection conductor and the second connection conductor of the connector is larger than a circumferential distance between the second heating ...

METHODS FOR PROCESSING BONDED DUAL ALLOY ROTORS INCLUDING DIFFERENTIAL HEAT TREATMENT PROCESSES

Methods for processing bonded dual alloy rotors are provided. In one embodiment, the method includes obtaining a bonded dual alloy rotor including rotor blades bonded to a hub disk. The rotor blades and hub disk are composed of different alloys. A minimum processing temperature (T) for the hub disk and a maximum critical temperature for the rotor blades (T) is established such that Tis less than T. A differential heat treatment process is then performed during which the hub disk is heated to processing temperatures equal to or greater than T, while at least a volumetric majority of each of the rotor blades is maintained at temperatures below T. Such a targeted differential heat treatment process enables desired metallurgical properties (e.g., precipitate hardening) to be created within the hub disk, while preserving the high temperature properties of the rotor blades and any blade coating present thereon. 1. A method for processing a bonded dual alloy rotor that includes rotor blades composed of a first alloy that are bonded to a hub disk composed of a second alloy different than the first alloy , the method comprising the steps of:{'sub': DISK_PROCESS_MIN', 'BLADE_MAX, 'performing a differential heat treatment process on the bonded dual alloy rotor during which the hub disk is heated to processing temperatures equal to or greater than a minimum processing temperature (T), while at least a volumetric majority of each of the rotor blades is maintained at temperatures below a maximum critical temperature (T),'}{'sub': BLADE_MAX', 'DISK_PROCESS_MIN, 'wherein Tis less than T.'}2. The method of wherein performing the differential heat treatment process comprises:{'sub': 'DISK_PROCESS_MIN', 'heating the hub disk to processing temperatures equal to or greater than Tover a peak heating period; and'}{'sub': DISK_PROCESS_MIN', 'BLADE_MAX, 'controlling heat transfer to and from the bonded dual alloy rotor during the differential heat treatment process such the magnitude of any ...

METHOD AND DEVICE FOR PARTIALLY HARDENING SEMIFINISHED PRODUCTS

Methods for using a mold to partially harden semifinished products, which are comprised of hardenable steel and have at least partially an open-profile or closed-profile cross section, may involve a number of steps. For example, such methods may involve heating regions of a semifinished product above an Actemperature, positioning the semifinished producing in a mold, positioning an active mold cooling element adjacent to or in contact with the heated regions of the semifinished product, and cooling the regions of the semifinished product at a defined cooling rate so that a hardened microstructure in the cooled regions. These methods and corresponding devices provide low cost solutions that dispense with complete hardening of semifinished products and/or employing welded connections to provide various mechanical properties.” 117.-. (canceled)18. A method for partially hardening a semifinished product in a mold , the semifinished product comprising hardenable steel and having at least partially an open-profile or a closed-profile cross-section , the method comprising:{'sub': '1', 'heating at least one region of the semifinished product to a temperature above an Actemperature of a composition of the semifinished product;'}placing at a minimum the at least one region of the semifinished product in the mold;positioning at least one active mold cooling element adjacent to or in contact with the at least one region; andcooling the at least one region at a defined cooling rate to produce a hardened microstructure in the at least one region.19. The method of wherein the at least one region of the semifinished product extends at least partially in at least one of an axial direction or a radial direction claim 18 , wherein the at least one region is hardened by the at least one active mold cooling element.20. The method of wherein the at least one region comprises a first region and a second region claim 19 , wherein the cooling of the first and second regions to produce the ...

A TIRE RASP BLADE

Methods and apparatus for treating a shaped tire rasp blade for mounting on a rasp hub, said tire rasp blade comprising a blade body and blade teeth, wherein the method comprises an austenitising process for austenitising the main part of the tire rasp blade by heating it to an austenitisation temperature, a subsequent quenching process and finally a tempering process for tempering the tire rasp blade. The austenitising process is performed by using induction heating for heating of said tire rasp blade, increasing the durability of a rasp blade by 30-50%. Induction heating is fast (austenitisation temperature can be reached within 15 seconds), wherein energy is focused into the rasp blade, enabling austenitisation temperature to be reached quite fast throughout the entire rasp blade. 1. A method for producing a tire rasp blade for mounting on a rasp hub , the tire rasp blade comprising a blade body and blade teeth , wherein the method comprises:induction heating a main part of the tire rasp blade to an austentization temperature; andtempering the tire rasp blade by starting quenching of the tire rasp blade before stopping the induction heating of the tire rasp blade.2. A method according to claim 1 , wherein the austentization temperature is at a temperature above 880 degrees Celsius and the quenching is started to ensure that the austentization temperature is not exceeded.3. A method according to claim 1 , wherein the induction heating is performed by orienting coils to minimize induction heating of neighboring coils.4. A method according to claim 1 , wherein the main part of the rasp blade comprises the blade teeth.5. A method according to claim 1 , wherein the tire rasp blade is quenched immediately after the induction heating.6. A method according to claim 1 , wherein the induction heating and quenching is performed in less than 30 seconds.7. A method according to claim 1 , wherein the rasp blade is fixated at a transporting device during shaping and tempering ...

APPARATUS FOR INDUCTION HARDENING

An apparatus for magnetic induction hardening of a workpiece includes a magnetic tool having a body portion formed of a generally non-magnetic material. The body portion has a surface configured to be positioned in close proximity to the workpiece being hardened. The apparatus further includes a magnetic arrangement coupled to the body portion at or adjacent the surface of the body portion and configured to provide regions of alternating polarity. A workpiece holder is configured to support the workpiece in close proximity to the surface of the magnetic tool. A drive arrangement for rotating the magnetic tool relative to the workpiece holder about an axis of rotation is provided to induce heating of the workpiece to achieve a temperature in the austenitic range of the workpiece resulting in hardening of the workpiece through a microstructural transformation. 1. An apparatus for magnetic induction hardening of a workpiece , the apparatus comprising: a body portion formed of a generally non-magnetic material, the body portion having a surface configured to be positioned in close proximity to the workpiece being hardened, the surface of the body being a radially inwardly-facing circumferential surface configured for induction hardening an outer surface of the workpiece; and', 'a magnetic arrangement coupled to the body portion at or adjacent the surface of the body portion and configured to provide regions of alternating polarity;, 'a magnetic tool having'}a workpiece holder configured to support the workpiece in close proximity to the surface of the magnetic tool such that the workpiece is received in a bore formed in the magnetic tool and is surrounded by the magnetic arrangement; anda drive arrangement for rotating the magnetic tool relative to the workpiece holder about an axis of rotation to induce heating of the workpiece to achieve a temperature in the austenitic range of the workpiece for hardening of the workpiece through a microstructural transformation.2. ...

BRACKET-INTEGRATED DOUBLE-LAYER DOOR IMPACT BEAM, APPARATUS AND METHOD FOR MANUFACTURING THE SAME

An apparatus for manufacturing a bracket-integrated double-layer door impact beam is provided. The apparatus includes a lower mold having a lower cavity formed with a base material molded to have a “U”-shaped cross section and a predetermined length. The base material is seated on the lower cavity. A lower electrode terminal is disposed in the lower mold to contact the base material. An upper mold has an upper cavity therein and is coupled with the lower mold to pressurize both end portions of the “U”-shaped cross section of the base material inward to form the base material with an “O”-shaped cross section. An upper electrode terminal is disposed in the upper mold to contact the base material. 1. An apparatus for manufacturing a bracket-integrated double-layer door impact beam , comprising:a lower mold having a lower cavity formed with a base material molded to have a “U”-shaped cross section and a predetermined length, wherein the base material is seated on an inner surface of the lower cavity;a lower electrode terminal disposed in the lower mold to contact the base material;an upper mold having an upper cavity formed therein and coupled with the lower mold to pressurize both end portions of the “U”-shaped cross section of the base material inward to form the base material to have an “O”-shaped cross section; andan upper electrode terminal disposed in the upper mold to contact the base material,wherein the apparatus further includes a power supply device configured to be electrically connected to each of the upper electrode terminal and the lower electrode terminal.2. The apparatus of claim 1 , wherein one surface of the lower electrode terminal is exposed to an inner side of the lower cavity to contact the base material.3. The apparatus of claim 2 , wherein the upper electrode terminal contacts the base material at the same time that the “O”-shaped cross section of the base material is formed.4. The apparatus of claim 3 , wherein the upper electrode terminal is ...

HIGHLY ALLOYED STAINLESS STEEL FORGINGS MADE WITHOUT SOLUTION ANNEAL

The post forging solution anneal step normally carried out on hot forgings made from highly alloyed metals can be eliminated while still avoiding the formation of deleterious intermetallic phases by adopting a number separate features in connection the way the forging is made. 1. A process for making a hot forging from a highly alloyed metal comprising (1) selecting as the billet to be forged only those billets which are essentially free of deleterious intermetallic phases , (2) heating the billet up to its forging temperature in a manner so that the heated billet is free or essentially free of deleterious intermetallic phases , (3) carrying out forging in a manner so that no intermetallic phases form in the core of the billed and forging made therefrom during this step , and (4) cooling the forging so obtained rapidly enough to substantially prevent formation of any intermetallic phases.2. The process of claim 1 , wherein the billet is heated to its forging temperature in step (2) by means of resistance or induction heating.3. The process of claim 2 , wherein heating of the billet is accomplished rapidly enough during heating step (2) so that formation of deleterious intermetallic phases is avoided essentially completely during the period of time in which the temperature of the billet is in the critical temperature range of the highly alloyed metal during this heating step.4. The process of claim 1 , wherein the billet is heated to its forging temperature in step (2) so that the billet remains above the upper critical temperature for intermetallic phase formation longer than the billet remains in its critical temperature range.5. The process of claim 1 , wherein forging step (3) is carried out in a manner so that the period of time which elapses between termination of the heating of the billet to its forging temperature in step (2) and initiation of cooling of the forging in step (4) is short enough so that the temperature of the core of the billet and forging ...

METHOD FOR PRODUCING A COMPONENT, COMPONENT AND PRESS FOR PRODUCING A COMPONENT

A method to produce a component from a workpiece via a press which includes at least one die to form the workpiece. The workpiece comprises at least one of a metal, a metal alloy and a coating and has a form of a hollow part. The method includes internal high-pressure forming and/or hydraulic back-pressure forming the workpiece via a fluid and the at least one die at a temperature below a first hardening temperature of the workpiece, and subsequently partially or completely hardening the workpiece by heating the workpiece above the first hardening temperature and then immediately cooling the workpiece. The heating and the cooling are each essentially conducted without a forming so that a fabricated component results. 111-. (canceled)12. A method to produce a component from a workpiece via a press which comprises at least one die to form the workpiece , wherein the workpiece comprises at least one of a metal , a metal alloy and a coating and has a form of a hollow part , the method comprising:internal high-pressure forming and/or hydraulic back-pressure forming the workpiece via a fluid and the at least one die, the internal high-pressure forming and/or the hydraulic back-pressure forming being conducted at a temperature below a first hardening temperature of the workpiece; andsubsequently partially or completely hardening the workpiece by heating the workpiece above the first hardening temperature and then immediately cooling the workpiece, the heating and the cooling each being essentially conducted without a forming so that a fabricated component results.13. The method as recited in claim 12 , wherein claim 12 ,the first hardening temperature is below a melting point of zinc phases; andthe heating of the workpiece above the first hardening temperature is to a temperature of above 700° C.14. The method as recited in claim 13 , wherein the temperature is above 840° C.15. The method as recited in claim 12 , wherein the fluid comprises at least one of water claim 12 , ...

METHOD AND APPARATUS FOR TREATING A STEEL ARTICLE

A method for forming and treating a steel article of a high strength and high ductility alloy particularly suited for use as armor plate. The method includes the steps of providing a starting material for the steel article, heating the starting material to a peak temperature range in less than ten seconds, holding the heated steel composition at the peak temperature range for between two and six seconds, quenching the heated steel composition from the peak temperature range to below 100° C. (212° F.) at a temperature rate reduction of 400 and 3000° C./sec (752 and 5432° F./sec), removing residual quench media from the surface of the quenched steel composition, tempering the quenched steel composition at a temperature of 100 to 260° C. (212 to 500° F.); and air cooling the tempered steel composition to less than 100° C. (212° F.) to form a steel having desired mechanical properties. 1. A method for treating a steel article to form a high yield strength and ductile alloy comprising the steps of:(a) providing a steel composition having a material thickness less than 0.5 inches (12.7 mm), having an initial microstructure of ferrite and pearlite, and having a composition of, by weight,carbon between 0.25 and 0.55%silicon between 0.15 and 0.35%,manganese between 0.40 and 1.0%,chromium between 0.80 and 1.10%,molybdenum between 0.15 and 0.25%,sulfur less than 0.040%,phosphorus less than 0.035%,balance with iron and other elements and compounds in making steel;(b) preheating the provided steel composition at least 0.7° C. (33.3° F.) per second to not more than 538° C. (1000° F.);(c) heating the preheated steel composition to a peak temperature of between 850° C. (1562° F.) and 1150° C. (2102° F.) in less than ten seconds;(d) holding the heated steel composition at the peak temperature range for between two and ten seconds;(e) quenching the heated steel composition from the peak temperature range to below 100° C. (212° F.) at a temperature rate reduction of between 400 and ...

High Magnetic Hardening Assembly and Method

The present invention relates to an apparatus, system and method for heat treating metal parts that are stacked together and moved through an induction heating system and quench system. The present invention is specifically directed to an Induction Thermo Magnetic Processing (ITMP) apparatus, method and system which uses a magnetic field processing with induction high-frequency heat treatment to process metal components so as to inductively hardening materials. 1. A method for inductively heating comprising:a. providing a carbon-containing metal part;b. providing a heating apparatus, said heating apparatus including a magnet system and an induction heating system, said magnet system designed to create a magnetic field with a magnetic flux density of at least 0.8 tesla, said induction heating system including at least one induction coil;c. moving said metal part in to said magnetic field; and,d. induction heat treating said metal part as said metal part passes through said high magnetic field so that about 65%-75% of the carbon in said metal part enters into solution during the induction heating process.2. The method as defined in claim 1 , including the step of quenching said heat treated metal part.3. The method as defined in claim 1 , wherein said metal part is vertically moved and rotated through said high magnetic field and said induction heating system.4. The method as defined in claim 2 , wherein said metal part is vertically moved and rotated through said high magnetic field and said induction heating system.5. The method as defined in claim 1 , wherein said metal part is connected to a column of metal parts claim 1 , said metal part passed through said magnetic field and inductively heated while connected to said column of metal parts.6. The method as defined in claim 4 , wherein said metal part is connected to a column of metal parts claim 4 , said metal part passed through said magnetic field and inductively heated while connected to said column of metal ...

System and Method for Induction Hardening of Metal Rings

System and method for induction hardening of metal rings, which includes two heads, each of which is attached to an induction medium; a system for vertical approximation of the two induction media to the metal ring; a system for horizontal approximation of the induction media to walls of an internal surface of the metal ring; and an oscillating circuit, wherein the system of vertical approximation displaces simultaneously in a vertical direction the two induction media until they are introduced into the metal ring; the system of horizontal approximation separates the two induction media from each other in a horizontal direction to bring each induction medium closer to the walls of the inner surface of the metal ring to heat it for a pre-established time, and to displace vertically the two induction media simultaneously until they reach a shower position to obtain the hardening of the metal ring. 1. A system for induction hardening of metal rings comprising:two heads arranged opposite each other, where each head is attached to an induction medium;a system for vertical and simultaneous approximation of the two heads together with the two induction media to the metal ring;a system for horizontal and simultaneous approximation of the two heads together with the two induction media to the walls of an inner surface of the metal ring; andan oscillating circuit which fixes a working frequency for the system,whereinthe vertical approximation system displaces simultaneously in a vertical direction the two induction media until the two induction media are introduced into the metal ring,the horizontal approximation system separates the two induction media from each other, to bring each half inductor closer to the walls of the inner surface of the metal ring to heat the metal ring for a pre-established time, anddisplace the two induction media vertically and simultaneously until they reach the shower position to obtain hardening of the metal ring.2. The system for induction ...

HOT STAMPING METHOD FOR MANUFACTURING VEHICLE BODY PARTS

Provided is a hot stamping method for manufacturing high strength vehicle body parts. The hot stamping method includes: high frequency induction heating a blank in a first heating furnace while transferring the blank; heating the heated blank to an austenitization temperature or more of a corresponding blank while transferring the heated blank from the first heating furnace to a second heating furnace; and drawing the blank heated to the austenitization temperature or more in the second heating furnace to form and cool the blank by using a press forming apparatus. According to the hot stamping method, it is possible to achieve excellent productivity and reduce energy. 1. A hot stamping method for manufacturing vehicle body parts , the hot stamping method comprising:a) performing a high frequency induction heating on a blank in a first heating furnace while transferring the blank, wherein the blank is obtained by blanking a boron steel sheet so as to have a size and a shape required for hot stamping and is not intentionally cooled in the high frequency induction heating;b) heating the blank transferred from the first heating furnace while transferring the blank in a second heating furnace, wherein the second heating furnace is a indirect heating furnace configured to transfer heat energy to the blank through at least one of radiation and convection; andc) forming and cooling the blank transferred from the second heating furnace in a press forming apparatus, wherein the press forming apparatus comprises an upper die and a lower die each having a cooling channel formed therein.2. The hot stamping method of claim 1 , wherein the first heating furnace comprises pairs of upper and lower rollers arranged in a transfer direction of the blank claim 1 ,wherein the blank is transferred by the lower rollers and the upper rollers are spaced apart from the blank so as not to contact the blank while the blank is transferred,a separation distance between the upper rollers and the ...

TOOL FOR HEATING AND QUENCHING A STRUCTURE

A structure is heated in a tool. The structure is quenched in the tool such that a shape of the structure is maintained, in which quenching is performed by contacting the structure with a quenching medium. 1. A method comprising:heating a structure in a tool; andquenching the structure in the tool such that a shape of the structure is maintained, in which quenching is performed by contacting the structure with a quenching medium.2. The method of claim 1 , wherein heating the structure comprises inductively heating the smart susceptors of the tool in contact with the structure.3. The method of claim 1 , wherein quenching the structure in the tool comprises flowing the quenching medium through apertures in smart susceptors of the tool.4. The method of claim 3 , wherein quenching the structure in the tool comprises flowing the quenching medium through apertures designed to maintain surface characteristics of the structure.5. The method of claim 1 , wherein the tool is an induction tool claim 1 , the method further comprising:loading the structure into the induction tool; andmoving at least one of a first tooling die of the induction or a second tooling die of the induction tool relative to each other to close the induction tool.6. The method of claim 5 , wherein the induction tool remains closed during and between the heating and the quenching.7. The method of claim 1 , wherein the structure is a metallic structure claim 1 , and wherein heating and quenching the structure in the tool comprises solution heat treating the metallic structure.8. The method of claim 1 , wherein quenching the structure in the tool comprises quenching the structure while the structure is held in a fixed position.9. The method of claim 1 , wherein the structure is a component of an aircraft.10. A tooling die comprising:a plurality of dielectric laminates having air gaps defined between adjacent dielectric laminates;a ceramic facing connected to at least some of the plurality of dielectric ...

STEEL PLATE MEMBER AND METHOD OF PRODUCING THE SAME

A method of producing a steel plate member includes: heating a steel plate member to a temperature higher than an austenite transformation finish temperature and subsequently cooling the steel plate member at a cooling rate higher than an upper critical cooling rate; and softening the steel plate member by reheating the steel plate member after the cooling of the steel plate member. 1. A method of producing a steel plate member , comprising:heating a steel plate member to a temperature higher than an austenite transformation finish temperature and subsequently cooling the steel plate member at a cooling rate higher than an upper critical cooling rate; andsoftening the steel plate member by reheating the steel plate member after the cooling of the steel plate member,wherein the softening of the steel plate member includes, without reheating a first region of the steel plate member, reheating a second region of the steel plate member to a temperature between an austenite transformation start temperature and the austenite transformation finish temperature and subsequently cooling the steel plate member at a cooling rate higher than the upper critical cooling rate to form a hard region containing martensite in the first region, a soft region containing the martensite and tempered martensite in the second region, and a region consisting of the tempered martensite in a boundary region between the first region and the second region.2. The method of producing a steel plate member according to claim 1 , wherein in the softening of the steel plate member claim 1 , the second region is reheated by induction heating.3. The method of producing a steel plate member according to claim 1 , wherein the steel plate member is press-formed after the heating of the steel plate member and before the cooling of the steel plate member.4. The method of producing a steel plate member according to claim 2 , wherein the second region is reheated by a high-frequency induction heating apparatus ...

CARTRIDGE CASE INDUCTION ANNEALING APPARATUS

The present disclosure relates to an induction annealing apparatus adapted to anneal cartridge cases to improve their reusability. In one implementation, the apparatus includes a power supply unit and a plurality of annealing units, each including a magnetic core having ends separated by an air gap. An induction coil is wound around the magnetic core to generate a magnetic field in the air gap. A cartridge case holder holds the cartridge case such that the neck of the cartridge case is positioned in one of the air gaps. The power supply unit selectively connects to the annealing units to supply power for a predetermined length of time, and the size of the air gap of the magnetic cores of each of the annealing units may differ. In other implementations, the size of the air gap may be adjustable, and a temperature sensor or a ferrite stake may be included. 1a power supply unit comprising a power supply controller; and a magnetic core having a first end and a second end separated by an air gap;', 'an induction coil wound around the magnetic core and configured to generate a magnetic field in the magnetic core and the air gap; and', 'a power supply connector electrically connected to the induction coil;, 'a plurality of annealing units, each annealing unit comprisingthe system further comprising a cartridge case holder for holding the cartridge case such that the neck of the cartridge case is positioned in one of the air gaps,wherein the power supply unit is configured to be selectively electrically connected to the power supply connector of any one of the annealing units,wherein the power supply controller is operable to supply power to the annealing unit connected to the power supply unit for a predetermined length of time, and whereinthe size of the air gap of the magnetic cores of each of the annealing units differs.. A system for induction annealing a neck of a cartridge case, the system comprising: This application is a continuation of U.S. application Ser. No. 14 ...

HEATING APPARATUS AND HEATING METHOD

A heating apparatus and a heating method are provided. The heating apparatus includes a coil configured to receive AC power to form a magnetic field that inductively heats a workpiece, a spray unit configured to spray cooling fluid including a liquid to the coil in a form of mist at least during a period in which the AC power is supplied to the coil. Alternatively, the spray unit may be configured to spray the cooling fluid in the form of mist to a heating target portion of the workpiece placed in the magnetic field at least during the period in which the AC power is supplied to the coil. 14-. (canceled)5. A heating method comprising:inductively heating a workpiece with a magnetic field formed by a coil to which AC power is supplied; andspraying cooling fluid including a liquid to the coil in a form of mist at least during a period in which the AC power is supplied to the coil.6. The heating method according to claim 5 , wherein the cooling fluid is sprayed to a gap between the coil and the workpiece at least during the period in which the AC power is supplied to the coil.7. The heating method according to claim 6 , wherein the workpiece is inductively heated using the coil having a core.8. The heating method according to claim 5 , further comprising moving the coil relative to workpiece to inductively heat the workpiece continuously in a direction in which the coil is moved relative to the workpiece.910-. (canceled)11. A heating method comprising:inductively heating a workpiece with a magnetic field formed by a coil to which AC power is supplied; andspraying cooling fluid including a liquid to a heating target portion of the workpiece placed in the magnetic field in a form of mist at least during a period in which the AC power is supplied to the coil.12. The heating method according to claim 11 , wherein the cooling fluid is sprayed to an easily overheated part of the heating target portion of the workpiece in the form of mist at least during the period in which ...

RAPID HEATING APPARATUS OF CONTINUOUS ANNEALING LINE

In a continuous annealing line for steel sheets comprising a heating zone, a soaking zone and a cooling zone, two or more induction heating devices are arranged in series in a front half part of the heating zone, and a heating stop region of 1˜30 m in length or a slow heating region having a heating rate of more than 0° C./s but not more than 10° C./s is provided in a temperature zone that the temperature of the steel sheet between two or more induction heating devices is 250° C. to 600° C. Even if the steel sheet is rapidly heated at a heating rate of not less than 50° C./s with such a rapid heating apparatus of the heating zone, the temperature distribution in the steel sheet is uniformized to realize the quality improvement of steel sheet shape or magnetic properties and so on. 18-. (canceled)9. A rapid heating apparatus in a continuous annealing line of a steel sheet comprising a heating zone , a soaking zone and a cooling zone , wherein two or more induction heating devices are arranged in series in a front half portion of the heating zone and a heating rate adjusting region is provided between the two or more induction heating devices.10. The rapid heating apparatus according to wherein the heating rate adjusting region is a heating stop region.11. The rapid heating apparatus according to claim 9 , wherein the heating rate adjusting region is a slow heating region.12. The rapid heating apparatus according to claim 11 , wherein the heating rate adjusting region is provided with a heating apparatus of heating the steel sheet at a heating rate of more than 0° C./s but not more than 10° C./s.13. The rapid heating apparatus according to claim 9 , wherein the heating rate adjusting region is disposed in a temperature zone that the steel sheet is 250˜600° C.14. The rapid heating apparatus according to claim 12 , wherein the heating rate adjusting region is disposed in a temperature zone that the steel sheet is 250˜600° C.15. The rapid heating apparatus according to ...

DEVICE FOR TREATING, BY HEAT TEMPERING, A METAL ELEMENT OF THE TUBE OR BAR TYPE HAVING ARCHED PORTIONS

The invention relates to a device for treating, by heat tempering, a metal element () of the tube or bar type having arched portions. The device includes heat treatment means having an induction coil () and a sprinkler ring (). According to the invention, this device includes means () for holding the metal element () that is composed of a clip () arranged so as to clamp around an end portion, referred to as the top, of the metal element and to keep the metal element freely suspended under said clip. The device also includes multi-axis robots () suitable for moving the induction coil () and the sprinkler ring () simultaneously along the metal element () starting from an end portion, referred to as the bottom, of the metal element that is opposite the top portion thereof. 1. A thermal quenching treatment device of a metal element , of the tube or bar type , having curved sections , comprising:a heat treatment device comprising an induction coil and a cooling device comprising spray nozzles integrated into an annular sprinkler ring,a holding device for the metal element,and a displacement device, the holding device and the heat treatment device are adapted to produce a relative displacement of the metal element inside the induction coil, and the annular sprinkler ring is arranged in close proximity to both the holding device and the heat treatment device,the holding device for maintaining the metal element is composed of a clamp arranged in such a way as to tighten a stretch of an end of the metal element, and to maintain the metal element freely suspended under the clamp, and there is provided a travel device that is capable of simultaneously moving the induction coil and the annular sprinkler ring along the metal element suspended under the clamp, from an end section of the metal element opposite to an upper section.2. The thermal quenching treatment device according to claim 1 , wherein the clamp retaining the metal element is carried by a rotational drive of the ...

METHOD FOR HEAT TREATING WITH A GRADUAL TEMPERATURE PROFILE

A method for heat treating a crankshaft for a vehicle propulsion system, or other work piece, includes heating at least a portion of the crankshaft to a gradual temperature profile. The temperature profile has gradually lower temperatures from the surface to the core of the crankshaft. The temperature profile includes a midpoint temperature at a midpoint between the surface and an innermost part of the core, the midpoint temperature being at least 50% of the surface temperature as measured in the Celsius scale. The surface temperature is within a transformation range of the crankshaft material. The method further includes quenching the surface of the crankshaft journal. The material of the crankshaft is preferably a carbon steel alloy having a DI less than 1.7 and having greater than 0.3 wt % carbon. 1. A method for heat treating a crankshaft for a vehicle propulsion system , the crankshaft being formed of a crankshaft material and having an outer surface , the method comprising:heating at least a portion of the crankshaft to a temperature profile having a surface temperature at the outer surface, the temperature profile including gradually lower temperatures from the outer surface to a core of the crankshaft, the temperature profile including a midpoint temperature at a midpoint between the outer surface and an innermost part the core, the midpoint temperature being at least 50% of the surface temperature as measured in the Celsius scale, the surface temperature being within a transformation range of the crankshaft material; and subsequently quenching the outer surface of the crankshaft.2. The method of claim 1 , wherein heating the portion of the crankshaft includes induction heating the portion of the crankshaft.3. The method of claim 2 , wherein the temperature profile includes a 25th percentile temperature at a 25percentile point that is halfway between the midpoint and the outer surface claim 2 , the 25percentile temperature being within 10% of the surface ...

Split multiple coil electric induction heat treatment systems for simultaneous heating of multiple features of a bearing component

A master inductor circuit is connected to an alternating current power source and a passive inductor circuit are assembled as a separable split inductor assembly to form at least one pair of a master heating inductor and a passive heating inductor where the master and passive inductor circuits are electromagnetically coupled without physical connection. A bearing component can be brought into the presence of the magnetic flux field created by the master and passive heating inductors to simultaneously induction heat one or more bearing features on the bearing component with subsequent quenching down austenitized bearing features on the bearing component.

Friction stir welding method for steel sheets and method of manufacturing joint

A friction stir welding method for welding steel sheets together includes a heating device disposed ahead of a rotating tool in an advancing direction that preheats an unwelded portion before the welding thereof by the rotating tool and at the time of preheating, the surface temperature distribution in a direction perpendicular to the advancing direction in a position at which the welding by the rotating tool is initiated is set such that given that T Ac1 is the Ac 1 point of a steel sheet, the maximum temperature (T U ) thereof is 0.6×T Ac1 <T U <1.8×T Ac1 , and given that L is the width of the heating region exceeding a temperature (T L )=0.6×T Ac1 , 0.3×d≦L≦2.0×d is satisfied with a diameter (d) of the shoulder.

METHOD FOR HEAT-TREATING RING-SHAPED MEMBER AND METHOD FOR PRODUCING RING-SHAPED MEMBER

A method for heat-treating a ring-shaped member includes the steps of: forming, by relatively rotating an coil along the circumferential direction of the formed body, an annular heated region in the formed body, the heated region having the steel austenitized therein; and simultaneously cooling a whole of the heated region to a temperature of not more than an Mpoint. In the step of forming the heated region, the heating is performed to repeatedly change over for a plurality of times between a state in which each region of the rolling contact surface has a temperature exceeding a temperature of an Apoint and a state in which each region of the rolling contact surface has a temperature that is less than the temperature of the Apoint and that maintains a supercooled austenite state. 1. A method for heat-treating a ring-shaped member comprising the steps of:forming, by relatively rotating an induction heating member arranged to face part of a circumferential surface of a ring-shaped member made of steel for induction-heating said ring-shaped member along the circumferential direction of said ring-shaped member, an annular heated region in said ring-shaped member, said heated region having said steel austenitized therein; and{'sub': 's', 'simultaneously cooling a whole of said heated region to a temperature of not more than an Mpoint,'}{'sub': 1', '1, 'in the step of forming said heated region, the heating being performed to repeatedly change over for a plurality of times between a state in which each region of said circumferential surface has a temperature exceeding a temperature of an Apoint and a state in which each region of said circumferential surface has a temperature that is less than the temperature of the Apoint and that maintains a supercooled austenite state.'}2. The method for heat-treating the ring-shaped member according to claim 1 , wherein a plurality of said induction heating members are arranged along the circumferential direction of said ring-shaped ...

SINGLE SHOT INDUCTOR FOR HEAT TREATMENT OF CLOSELY SPACED MULTIPLE ECCENTRIC CYLINDRICAL COMPONENTS ARRANGED ALONG THE LONGITUDINAL AXIS OF A WORKPIECE

A single shot inductor is provided to induction heat treat closely spaced multiple eccentric cylindrical components arranged along the longitudinal axis of a workpiece. The single shot inductor has multiple planar arcuate single turn coil sections separated from each other by an axial coil section so that each of the multiple planar arcuate single turn coil sections sequentially heat treats the closely spaced multiple eccentric cylindrical components inserted within the single shot inductor. 1. A single shot inductor for an induction heat treatment of a workpiece comprising at least one group of closely spaced multiple eccentric cylindrical components arranged along the longitudinal axis of the workpiece , the single shot inductor comprising a sequential series of alternating planar arcuate single turn coil sections and axial coil sections forming a single turn coil in which at least the series of alternating planar arcuate single turn coil sections sequentially induction heat treat selected combinations of the at least one group of closely spaced multiple eccentric cylindrical components when the at least one group of closely spaced multiple eccentric cylindrical components is inserted in the single shot inductor and axially rotated through 360 degrees.2. The single shot inductor of wherein the sequential series of alternating planar arcuate single turn coil sections and axial coil sections comprises a first planar arcuate single turn coil section; a first axial coil section; a second planar arcuate single turn coil section; a second axial coil section; and a third planar arcuate single turn coil section.3. The single shot inductor of wherein the first planar arcuate single turn coil section claim 2 , the first axial coil section claim 2 , the second planar arcuate single turn coil section claim 2 , the second axial coil section claim 2 , and the third planar arcuate single turn coil section have a common longitudinal central axis and the first and the second axial ...

Large Scale Metal Forming

In certain embodiments described herein, a heated line forming system includes a heating coil system configured to produce a heated line on a surface of a metal part. The heated line forming system also includes an air knife cooling system configured to maintain a dry area for the heated line, and to direct a coolant (e.g., cooling water, liquified gases such as liquid argon, solidified gases such as carbon dioxide snow, and so forth) around the heated line via a spray mechanism such that the coolant does not flow or splash into the heated line on the metal part. In certain embodiments, the heated line forming system includes multiple induction coils arranged along a line and spaced a short distance apart, but which, when operated simultaneously together, form a heated line on a surface of a metal part. 122-. (canceled)23. A thermal forming system comprising:one or more thermal forming assemblies, each thermal forming assembly comprising one or more heating heads to heat a surface of a metal plate to manipulate a shape of the metal plate;one or more positioning devices operable to position the one or more thermal forming assemblies with respect to a support structure based on positioning control signals from an automated control system, wherein each thermal forming assembly is secured to a support structure by the one or more positioning devices operable to move a respective thermal forming assembly relative to the surface of the metal plate; andone or more sensors to monitor a temperature of a heated region of the metal plate and provide temperature data to the automated control system, the automated control system to adjust the positioning control signals and the heating control signals in response to the temperature data, the one or more heating heads operable to generate heat in the metal plate in response to heating control signals from the automated control system.24. The thermal forming system of claim 23 , wherein the positioning control signals are to ...

HEATING METHOD AND HEATING APPARATUS FOR CENTER PILLAR FOR VEHICLE

A heating method capable of changing thermal hysteresis for each part of the center pillar for the vehicle is provided. A heating method includes heating, when the center pillar for the vehicle is annealed, the center pillar by induction heating so that: a strength of a part of the first part other than the flange part becomes higher than that of the flange part of the first part, and the strength of the flange part of the first part becomes higher than that of the second part; and toughness of the second part becomes higher than that of the flange part of the first part, and the toughness of the flange part of the first part becomes higher than that of the part of the first part other than the flange part. 1. A method for heating a center pillar for a vehicle when the center pillar for the vehicle is annealed , the center pillar for the vehicle being made of hardened steel and including a first part located on an upper side of the vehicle with respect to a bead and a second part located on a lower side of the vehicle with respect to the bead , the first part including a flange part in at least a part of its fringe part , the method comprising:heating, when the center pillar for the vehicle is annealed, the center pillar for the vehicle by induction heating so that: a strength of a part of the first part other than the flange part becomes higher than that of the flange part of the first part, and the strength of the flange part of the first part becomes higher than that of the second part; and toughness of the second part becomes higher than that of the flange part of the first part, and the toughness of the flange part of the first part becomes higher than that of the part of the first part other than the flange part, whereinthe heating by induction heating comprises:heating the flange part of the first part by induction heating; andheating the second part by induction heating so that a temperature of the second part becomes higher than that of the flange part of ...

METHOD FOR PRODUCING STEEL TUBE FOR AIR BAG

A method for producing a steel tube of high strength and toughness for air bag subjects a steel tube to high-frequency induction heating such that the outer surface temperature T1 (° C.) of the tube measured at the end of high-frequency induction heating is within the range defined by TAc3+40° C.≦T1≦1100° C., TAc3 is the temperature (° C.) of Actransformation point. Using the measured outer surface temperature of the tube, time x (second) elapsed from when the outer surface temperature of steel tube reaches the temperature of Actransformation point by high-frequency induction heating is calculated. Based on the calculated time x, time t (second) required from measurement of the outer surface temperature of steel tube to the start of rapid cooling is controlled so that the time t is within the range defined by 0 (sec) Подробнее

Ultra High Strength Alloy for Severe Oil and Gas Environments and Method of Preparation

A high strength, corrosion resistant alloy suitable for use in oil and gas environments includes, in weight percent: 0-15% Fe, 18-24% Cr, 3-9% Mo, 0.05-3.0% Cu, 4.0-6.5% Nb, 0.5-2.2% Ti, 0.05-1.0% Al, 0.005-0.040% C, balance Ni plus incidental impurities and deoxidizers. A ratio of Nb/(Ti+Al) is equal to 2.5-7.5.

REGENERATIVE HEAT TREATMENT METHOD FOR HEAT-RESISTANT METAL MEMBER SUFFERING FROM CREEP DAMAGE

A heat-resistant metal member suffering from creep damage is covered by a heat-resistant covering member and secured so as to contact an outer periphery of the heat-resistant metal member, and the heat-resistant metal member covered by the heat-resistant covering member is heated to a temperature of 1000° C. or greater. A compressive force accordingly acts on the heat-resistant metal member undergoing thermal expansion toward the outer periphery, enabling efficient regenerative heat treatment to be performed on the heat-resistant metal member suffering from creep damage, while restraining thermal expansion in the direction toward the outer periphery of the heat-resistant metal member. 1. A regenerative heat treatment method for a heat-resistant metal member suffering from creep damage , the method comprising:covering the heat-resistant metal member by a heat-resistant covering member and securing so as to contact an outer periphery of the heat-resistant metal member; andheating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000° C. or greater.2. The method according to claim 1 , wherein claim 1 ,{'sub': '1', 'after heating the heat-resistant metal member covered by the heat-resistant covering member to a temperature of 1000° C. or greater, the heat-resistant metal member covered by the heat-resistant covering member is cooled and re-heated to a temperature of an Atransformation point or greater.'} The present invention relates to a regenerative heat treatment method for a heat-resistant metal member suffering from creep damage.Hitherto, as a method to regenerate locations degraded by creep damage in high temperature members, such as those employed in thermal or nuclear power plants, or chemical plants (for example, high temperature resistant welds of boilers and turbines, and base material for high temperature pipes, headers, nozzles and the like), a method has been developed in which, for example, the high ...

METHOD FOR THERMALLY TREATING RING-SHAPED MEMBER

When a plurality of outer rings (R) are sequentially and inductively heated to a target temperature by energizing a heating coil () elongated more than each of the plurality of outer rings (R), which are made of steel and retained coaxially by a retaining unit (), while relatively moving the outer rings (R) and the heating coil () in an axial direction, an output of the heating coil () is varied in consideration of the number of outer rings (R) present in an opposing region of the heating coil (). 1. A heat treatment method for a ring-shaped member , comprising a heating step of sequentially and inductively heating a plurality of ring-shaped members to a target temperature by energizing a heating coil elongated more than each of the plurality of ring-shaped members , which are made of steel and retained coaxially with each other , while relatively moving the plurality of ring-shaped members and the heating coil in an axial direction of the each of the plurality of ring-shaped members ,the heating step comprising varying an output of the heating coil in consideration of a number of ring-shaped members present in an opposing region of the heating coil.2. The heat treatment method for a ring-shaped member according to claim 1 , an output increasing step of increasing the output of the heating coil in a stepped manner; and', 'an output decreasing step of decreasing the output of the heating coil in a stepped manner., 'wherein the heating step comprises3. The heat treatment method for a ring-shaped member according to claim 2 , wherein an output increase pattern of the heating coil in the output increasing step and an output decrease pattern of the heating coil in the output decreasing step are different from each other.4. The heat treatment method for a ring-shaped member according to claim 1 , further comprising a cooling step of cooling the ring-shaped member inductively heated to the target temperature.5. The heat treatment method for a ring-shaped member according ...

Annealing Parameter Determination

This disclosure relates to determining a material transition point such as a melt-point, and to determining an annealing parameter based on the determined material transition point. Changes in a parameter associated with an electromagnetic circuit coupled to an object subject to heating are monitored. A material transition point is determined upon detecting a predetermined change in the parameter. The annealing parameter is derived from the determined material transition point.

DEVICE AND METHOD FOR MANUFACTURING METAL CLAD STRIPS CONTINUOUSLY

The device and method for manufacturing metal clad strip continuously provided by the present invention, combines casting, rolling and heat treatment used for the single material manufacture with the continuous and large-scale manufacture method for the clad strip, greatly improves the productivity of clad strip. The present invention can be used for manufacturing single-sided or double-sided clad strips with different thickness specifications, wherein the base layer material or the clad layer material can be selected in a wide range, including carbon steel, stainless steel, special alloy steel, titanium, copper and the like. In the present application, continuous casting and rolling clad strip is implemented, which decrease the energy consumption and costs. 11234567. A device for manufacturing metal clad strips continuously , comprising base material supplying equipment consisting of decoiler () , pinch roll () , shot blasting machine () , welding equipment () , welding pinch roll () , induction heating apparatus () , and guiding roll () , wherein ,{'b': 1', '2', '3', '4', '5', '6', '7', '8', '9, 'base material strip (A) are transported by the base material supplying equipment through decoiler (), pinch roll (), shot blasting machine (), welding equipment (), welding pinch roll (), induction heating apparatus () and guiding roll () to the mold () where the base material and molten steel are merged; the base material strip enters the mold along the middle inside from above, and pass through the mold from below, wherein the two inner walls of the mold being sealed with side seal plates; two tundishes () for casting molten steel is provided above the mold; the molten steel flows from tundish into the mold and contact with the two sides of the base material strip in the mold, so that a preliminary melt merging takes place;'}{'b': 10', '11', '12', '13', '14', '15', '16, 'upon preliminary melt merging, the base material strip (A) forms a clad slab (B) which passes ...

DEVICE AND METHOD FOR MANUFACTURING METAL CLAD PLATES IN WAY OF CONTINUOUS CASTING AND ROLLING

The device and method for manufacturing metal clad plates in way of continuous casting and rolling provided by the present invention, combines the continuous casting, rolling and heat treatment methods used for single material production with the continuous and large-scale production method of composite strip, greatly improves the production efficiency of composite plates. The present invention can be used for producing single-sided or double-sided composite plates with different thickness specifications, wherein the base material or the composited material can be selected in a wide range, including carbon steel, stainless steel, special alloy steel, titanium, copper and the like. The invention realizes the production of composite plates by continuous casting and rolling, and reduces energy consumption and costs. 11234567. A device for manufacturing metal clad plates in way of continuous casting and rolling , comprising base material supplying equipment including an uncoiler () , a pinch roller () , a shot blasting machine () , a welding equipment () , a welding pinch roller () , an induction heating apparatus () , and a guiding roller (); wherein ,{'b': 1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '12', '14', '15', '16, 'the device comprises two base material supplying equipment lines, two base material strips (A) are transported through the uncoiler (), the pinch roller (), the shot blasting machine (), the welding equipment (), the welding pinch roller (), the induction heating apparatus () and the guiding roller () at different lines, to a mould () where a base material and a molten steel are merged; a base material strip enters the mould from above and passes through from below along inner walls of two sides of the mould, wherein the inner walls of two sides of the mould being sealed with side seal plates; a tundish () for casting a molten steel is provided above the mould; the molten steel flows from the tundish into the mould and comes ...

HEAT TREATMENT EQUIPMENT AND HEAT TREATMENT METHOD

Provided is a heat treatment apparatus (), including: a conveying device (), which is configured to convey a rod-shaped workpiece (W) at a predetermined velocity along an axial direction of the workpiece (W); and a heating device () including a heating coil () configured to inductively heat the workpiece (W) being conveyed to a quenching temperature, wherein the heating coil () includes a first heating section (A) and a second heating section (B), which are coupled to each other in series along the axial direction of the workpiece (W), and is electrically connected to a single high-frequency power supply (), and wherein a coil pitch (D) of the second heating section (B) arranged relatively on a front side in a conveying direction for the workpiece (W) is larger than a coil pitch (D) of the first heating section (A) arranged relatively on a rear side in the conveying direction. 1. A heat treatment apparatus , comprising:a conveying device, which is configured to convey a rod-shaped workpiece having an outer peripheral surface with a circular cross section at a predetermined velocity along an axial direction of the rod-shaped workpiece; anda heating device comprising a heating coil configured to inductively heat the rod-shaped workpiece being conveyed to a quenching temperature,wherein the heating coil comprises a first heating section and a second heating section, which are coupled to each other in series in the axial direction of the rod-shaped workpiece, and is electrically connected to a single high-frequency power supply, andwherein a coil pitch of the second heating section arranged relatively on a front side in a conveying direction for the rod-shaped workpiece is larger than a coil pitch of the first heating section arranged relatively on a rear side in the conveying direction for the rod-shaped workpiece.2. The heat treatment apparatus according to claim 1 , wherein the second heating section has a longer axial dimension than an axial dimension of the first ...

Post-heating treatment device and post-heating treatment method

A post-heating treatment device performs a post-heating treatment for a welded section of a rail, after an induction heating coil is automatically disposed at a predetermined position based on the welded section. The device includes welded section detecting unit for detecting the position of a welded section on a rail, a first coil and a second coil that form an induction heating coil, first coil moving unit for moving the first coil to a position spaced apart from the rail at a predetermined distance, second coil moving unit for moving the second coil to a position separated from the rail at a predetermined distance, where the second coil is contacted to the first coil, clamping unit for pressing against the contact portion between the first coil and the second coil, and current applying unit for applying a predetermined current to the formed induction heating coil.

Electric Induction Heating of a Rail Head with Non-Uniform Longitudinal Temperature Distribution

A method is provided for making the longitudinal temperature distribution of the bulbous end of a longitudinally oriented workpiece, such as a rail's head, generally uniform when the head has a non-uniform longitudinal temperature distribution. A combination of crown and skirt electric inductors is used to achieve the generally uniform temperature distribution by modulating the magnetic field intensity produced by current flow through one or more of the combination of crown and skirt inductors as required for the non-uniformly heated regions of the rail's head. 1. A method of electric induction heating of a bulbous end of a longitudinally oriented workpiece , wherein at least the bulbous end is electrically conductive , the method comprising:alternately passing the longitudinally oriented workpiece through an at least one crown inductor and an at least one skirt inductor with the bulbous end oriented beneath the at least one crown inductor and between the at least one skirt inductor, the at least one crown inductor comprising a central longitudinal section under which the top of the bulbous end passes through, and a right flank longitudinal section and left flank longitudinal section within which the flanks of the bulbous end passes though, the at least one skirt inductor comprising opposing right and left side skirt inductor sections which the sides of the bulbous end passes through; andapplying alternating current power to the at least one crown inductor and the at least one skirt inductor to generate a magnetic field around the at least one crown inductor and the at least one skirt inductor so that magnetic flux couples with the electrically conductive bulbous end to induce heating by eddy current.2. The method of further comprising moving at least one of the at least one crown inductor or the at least one skirt inductor while alternately passing the longitudinally oriented workpiece through the at least one crown inductor and the at least one skirt inductor.3. ...

Transverse flux strip heating with dc edge saturation

Induction heating apparatus and methods are disclosed for selective workpiece heating such as strip heating, in which DC windings around one or more laminations proximate to a workpiece edge are selectively energized using DC electrical power for controlled partial or full saturation of the one laminations to control edge overheating in a transverse flux induction heating system, in which certain implementations further employ a copper shield between the induction heating coil and the strip workpiece proximate the edge of the workpiece to control the edge heating effect.

Highway safety protective fence and method for manufacturing the same

A highway safety protective fence includes a processed steel guardrail board and a protective sleeve, wherein the protective sleeve is sleeved to an outer surface of the processed steel guardrail board. Furthermore, a method for manufacturing the highway safety protective fence includes steps of: conveying an original steel guardrail board to a quenching furnace through a temperature withstanding ceramic stick, quenching, conveying to a constant temperature furnace, staying, conveying to a quenching oil solution tank, cooling in sequence and obtaining a processed steel guardrail board; conveying the processed steel guardrail board to a rubber coating machine through a conveying belt, and packaging the processed steel guardrail board with the protective sleeve to obtain the highway safety protective fence. In the highway safety protective fence provided by the present invention, the steel guardrail board is quenched to greatly increase the safety factor.

Induction heating apparatus and induction heating method

Provided is an induction heating apparatus including a conveying device, which is configured to convey a rotatable workpiece along a linear guiding conveyance path, and a heating coil, which is configured to inductively heat the workpiece being conveyed along the guiding conveyance path. The conveying device includes a first shaft member and a second shaft member, which are arranged in parallel so as to be separated from each other, and a rotary mechanism, which is configured to rotationally drive at least one of the first shaft member and the second shaft member about an axis thereof. The second shaft member is formed of a threaded shaft having a helical convex portion formed along an outer periphery of the second shaft member. The guiding conveyance path is formed by a groove bottom surface of a helical groove defined on the second shaft member by the helical convex portion.