СПОСОБ ЗАКАЛКИ НА ТВЕРДЫЙ РАСТВОР ДЕФОРМИРОВАННОЙ ПРИ НИЗКИХ ТЕМПЕРАТУРАХ ЗАГОТОВКИ ИЗ ПАССИВНОГО СПЛАВА И ДЕТАЛЬ, ЗАКАЛЕННАЯ НА ТВЕРДЫЙ РАСТВОР С ПОМОЩЬЮ СПОСОБА

Изобретение относится к области термической обработки заготовок из пассивного сплава на основе железа. Для повышения коррозионной стойкости осуществляют закалку на твердый раствор деформированной при низких температурах заготовки из пассивного сплава, причем способ включает первый этап растворения по меньшей мере азота в заготовке при температуре T1, которая выше температуры растворимости для карбида и/или нитрида, а также ниже точки плавления пассивного сплава, и последующий второй этап растворения азота и/или углерода в заготовке при температуре T2, которая ниже температуры, при которой в пассивном сплаве образуются карбиды и/или нитриды. 2 н. и 19 з.п. ф-лы, 9 ил., 6 пр.

КОВАНЫЙ ВАЛОК, СООТВЕТСТВУЮЩИЙ ТРЕБОВАНИЯМ ПРОИЗВОДСТВА ХОЛОДНОКАТАНЫХ ИЗДЕЛИЙ И СПОСОБ ПОЛУЧЕНИЯ ТАКОГО ВАЛКА

Заявленное изобретение относится к металлургии. Валок содержит сталь следующего состава, в мас.%: С 0,8-1, Mn 0,2-0,5, Si 0,2-2,0, Cr 7,0-13,0, Мо 0,6-1,6, V 1,0-3,0, остальное Fe и возможные случайные примеси. Микроструктура валка включает отпущенный мартенсит с содержанием остаточного аустенита менее 5 об.% и открытую сетку эвтектических карбидов с содержанием с эвтектических карбидов менее 5 об.%. Валок имеет твердость по Виккерсу от 780 до 840 и внутренние напряжения сжатия от -300 МПа до -500 МПа. Обеспечивается улучшение поверхности валка. 12 н. и 36 з.п. ф-лы, 19 ил., 4 табл., 4 пр.

СТАЛЬ, ПРОДУКТ, ПРОИЗВЕДЕННЫЙ ИЗ ТАКОЙ СТАЛИ, И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Сталь, характеризующаяся тем, что ее состав, мас. %, представляет собой: 10,0≤Ni≤24,5; 1,0≤Mo≤12,0; 1,0≤Со≤25,0; 20,0≤Мо+Со+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29,0; Со+Мо≥20,0; Ni+Co+Mo≥29; следовые количества≤Al≤4,0; следовые количества≤Ti≤0,1; следовые количества≤N≤0,0050; следовые количества≤Si≤2,0; следовые количества≤Mn≤4,0; следовые количества≤C≤0,03; следовые количества≤S≤0,0020; следовые количества≤Р≤0,005; следовые количества≤В≤0,01; следовые количества≤Н≤0,0005; следовые количества≤О≤0,0025; следовые количества≤Cr≤5,0; следовые количества≤Cu≤2,0; следовые количества≤W≤4,0; следовые количества≤Zr≤4,0; следовые количества≤Ca≤0,1; следовые количества≤Mg≤0,1; следовые количества≤Nb≤4,0; следовые количества≤V≤4,0; следовые количества≤Ta≤4,0; остаток - железо и неизбежные примеси. Техническим результатом является изготовление стали с улучшенными механическими свойствами. 8 н. и 27 з.п. ф-лы, 3 ил., 7 табл.

ГОРЯЧЕШТАМПОВАННАЯ ДЕТАЛЬ И СПОСОБ ЕЕ ИЗГОТОВЛЕНИЯ

Изобретение относится к области металлургии. Для повышения прочности на растяжение и ударной вязкости при низких температурах горячештампованная деталь имеет химический состав, мас.%: С 0,120-0,400, Si 0,005-2,000, Mn, или Cr, или оба из них: в совокупности 1,00-3,00, Al 0,005-0,100, B 0,0003-0,0020, P не более 0,030, S не более 0,0100, О не более 0,0070, N не более 0,0070, Ti 0-0,100, Nb 0-0,100, V 0-0,100, Ni 0%-2,00, Cu 0-2,00, Mo 0-0,50, Ca, или редкоземельный металл (REM), или оба из них: в совокупности 0-0,0300, Fe и примеси - остальное и структуру, представленную: долей участков мартенсита, или бейнита, или обоих из них: в совокупности не менее 95%, коэффициентом покрытия границы бывших аустенитных зерен карбидами на основе железа: не более 80%, и численной плотностью карбидов на основе железа в бывших аустенитных зернах: не менее 45/мкм. 2 н. и 3 з.п. ф-лы, 1 ил., 7 табл.

СПОСОБ ПРОИЗВОДСТВА КОМПОНЕНТА С ИСПОЛЬЗОВАНИЕМ ПРОЦЕССА АДДИТИВНОГО ПРОИЗВОДСТВА

Изобретение относится к способу производства компонента для газовых турбин и турбинной установки. Способ содержит этапы, на которых обеспечивают набор данных, задающий компонент для использования в процессе аддитивного производства, при этом по меньшей мере два разных компонентных объема (CA1-CA3) задаются в компоненте до этапа производства, а для выполнения процесса аддитивного производства выбирается по меньшей мере два разных параметра (A, B) процесса, которые обуславливают разные движущие силы для рекристаллизации и, таким образом, разные характеристики рекристаллизации в материале упомянутого компонента. Произведенный компонент подвергается термообработке (HT) при температуре (T_HT) выдерживания, причем температура (T_HT) выдерживания превышает температуру рекристаллизации по меньшей мере одного из упомянутых по меньшей мере двух компонентных объемов. Технический результат заключается в оптимизации способа производства компонента и улучшении свойств компонента. 13 з.п. ф-лы, 13 ил.

ФИКСИРУЮЩИЙ ИНСТРУМЕНТ ДЛЯ ТЕРМИЧЕСКОЙ ОБРАБОТКИ МЕТАЛЛИЧЕСКИХ ДЕТАЛЕЙ

Изобретение относится к фиксирующему инструменту (100) для фиксации, по меньшей мере, одной металлической детали (150), подлежащей термообработке или формованию в горячем состоянии. Инструмент содержит неподвижную опорную конструкцию (110), имеющую форму, соответствующую общей форме каждой фиксируемой металлической детали. Первые фиксирующие элементы (1161-1261), расположенные с одной стороны каждой детали, вторые фиксирующие элементы (1162-1262), расположенные с другой стороны каждой детали. Упругий элемент (130-134) пружинного типа, расположенный между опорной конструкцией (110) и каждым первым или вторым фиксирующим элементом (1161-1261; 1162-1262) для обеспечения фиксации детали в течение продолжительности термообработки. Причем указанные неподвижная опорная конструкция (110), первые и вторые фиксирующие элементы (1161-1261; 1162-1262) и упругий элемент (130-134) изготовлены из термоконструкционного композиционного материала. Технический результат заключается в получении точной геометрии ...

НИТРОЦЕМЕНТИРОВАННАЯ СТАЛЬНАЯ ДЕТАЛЬ С ИНДУКЦИОННОЙ ЗАКАЛКОЙ С ПОВЫШЕННОЙ УСТАЛОСТНОЙ ПРОЧНОСТЬЮ ПОВЕРХНОСТИ ПРИ ВЫСОКОЙ ТЕМПЕРАТУРЕ И СПОСОБ ЕЕ ПРОИЗВОДСТВА

Изобретение относится к области металлургии, а именно к изготовлению стальных деталей, используемых в качестве конструкционных компонентов машин. Используют сталь, содержащую в мас.%: С: 0,005-0,8, Si: 2,0 и менее, Mn: 0,2-3,0, P: 0,03 и менее, S: 0,005-0,10, Ni: 3,0 и менее, включая 0, Сr: 5,0 и менее, включая 0, Мо: 2,0 и менее, включая 0, W: 1,0 и менее, включая 0, В: 0,0050 и менее, включая 0, О: 0,0050 и менее и N: 0,003-0,03, и, кроме того, содержащую один или оба Аl: 0,005-0,2 и Ti: 0,005-0,2 и один или оба V: 0,3 и менее, включая 0, и Nb: 0,3 и менее, включая 0, железо и неизбежные примеси остальное. Подвергают сталь нитроцементации, последующей закалке в масле или соли, последующему индукционному нагреву и закалке водой или полимерным закалочным веществом при температуре менее 40°С. Получают деталь с концентрацией N на поверхности 0,1-0,8 мас.%, суммой концентраций N и С 1,0-2,0% по мас., количеством остаточного аустенита на поверхности менее 15 об.%, глубиной неполностью закаленного ...

МАРТЕНСИТНАЯ НЕРЖАВЕЮЩАЯ СТАЛЬ С ВЫСОКОЙ УДАРНОЙ ВЯЗКОСТЬЮ И ИЗГОТОВЛЕННЫЙ ИЗ НЕЕ НАСОС ВОЗВРАТНО-ПОСТУПАТЕЛЬНОГО ДЕЙСТВИЯ

Изобретение относится к насосам возвратно-поступательного действия. Насос возвратно-поступательного действия может содержать приводную часть и напорную часть, функционально соединенную с приводной частью. Напорная часть может включать в себя плунжер, цилиндр, выполненный с возможностью функционально сцепляться с плунжером, и головку. Плунжер, цилиндр и головка напорной части могут быть, каждый, изготовлены из мартенситной нержавеющей стали с высокой ударной вязкостью, содержащей, мас.%: до 0,06 углерода, от 11,50 до 17,00 хрома, от 3,50 до 6,00 никеля, от 0,30 до 1,50 молибдена, от 0,01 до 0,20 ванадия, до 0,060 алюминия, остальное - железо. Обеспечивается повышение прочности, коррозионной стойкости и ударной вязкости материала, увеличение стойкости деталей насоса к воздействию агрессивных и абразивных сред. 3 н. и 13 з.п. ф-лы, 3 табл., 7 ил., 1 пр.

СПОСОБ ПРОИЗВОДСТВА ДЕТАЛЕЙ ШАССИ ИЗ МИКРОЛЕГИРОВАННОЙ СТАЛИ, ХАРАКТЕРИЗУЮЩЕЙСЯ УЛУЧШЕННОЙ ДЕФОРМИРУЕМОСТЬЮ В ХОЛОДНОМ СОСТОЯНИИ

Изобретение относится к способу производства детали шасси из микролегированной стали, характеризующейся улучшенной перерабатываемостью в холодном состоянии у кромок листового металла, затвердевших в холодном состоянии после механического отделения, включающему следующие далее стадии способа: получение горячекатаного штрипса или горячекатаного листового штрипса из листового металла, характеризующихся заявленной композицией сплава в массовых процентах; резка заготовки при комнатной температуре и необязательное осуществление дополнительных операций пробивки или резки; нагревание исключительно областей кромок листового металла до температуры, составляющей по меньшей мере 700°С, при времени выдержки, составляющем самое большее 10 секунд, и последующее охлаждение при использовании воздуха; холодная формовка заготовки в одну или несколько стадий для получения детали шасси при комнатной температуре. 2 н. и 13 з.п. ф-лы.

ЗАКАЛЕННАЯ МАРТЕНСИТНАЯ СТАЛЬ С НИЗКИМ СОДЕРЖАНИЕМ КОБАЛЬТА, СПОСОБ ПОЛУЧЕНИЯ ДЕТАЛИ ИЗ ЭТОЙ СТАЛИ И ДЕТАЛЬ, ПОЛУЧЕННАЯ ЭТИМ СПОСОБОМ

... 1. Сталь, отличающаяся тем, что ее состав следующий, вес.%: ! - C от 0,18 до 0,30% включительно ! - Co от 1,5 до 4% включительно ! - Cr от 2 до 5% включительно ! - Al от 1 до 2% включительно ! - Mo+W/2 от 1 до 4% включительно ! - V следы до 0,3% включительно ! - Nb следы до 0,1% включительно ! - B след, до 30 ppm включительно ! - Ni от 11 до 16% включительно, причем Ni≥7+3,5 Al ! - Si следы до 1,0% включительно ! - Mn следы до 2,0% включительно ! - Ca следы до 20 ppm включительно ! - редкоземельные элементы следы до 100 ppm включительно ! - если N≤10 ppm, то Ti+Zr/2 следы до 100 ppm включительно, причем Ti+Zr/2<10 N ! - если 10 ppm Подробнее

ТЕПЛОСТОЙКАЯ СТАЛЬ

... 1. Теплостойкая сталь, отличающаяся тем, что она имеет следующий химический состав, мас.%: ! 0,30-0,50 C ! 0-1,5 Si ! 1 Подробнее

СПОСОБ УПРОЧНЕНИЯ ПЯТНИКА ЕДИНИЦЫ ЖЕЛЕЗНОДОРОЖНОГО ПОДВИЖНОГО СОСТАВА И УСТРОЙСТВО ДЛЯ ЕГО ОСУЩЕСТВЛЕНИЯ

ТРУБА ИЗ НЕРЖАВЕЮЩЕЙ АУСТЕНИТНОЙ СТАЛИ С ОТЛИЧНОЙ СТОЙКОСТЬЮ К ОКИСЛЕНИЮ ПАРОМ И СПОСОБ ЕЕ ПОЛУЧЕНИЯ

... 1. Труба из аустенитной нержавеющей стали с отличной стойкостью к окислению водяным паром, которая содержит, в мас.%, от 14 до 28% Cr и от 6 до 30% Ni, причем в структуре металла на глубине от 5 до 20 мкм от внутренней поверхности стальной трубы существует область, удовлетворяющая формуле (1)где g в формуле (1) является величиной, рассчитываемой из формулы (2),где значения символов в формуле (2) следующие:g: объемное отношение (%);α: полная сумма числа пикселей на цифровом изображении в зоне, в которой разупорядоченность ориентации соседних кристаллов, обнаруженная на диаграмме направленности обратного рассеяния электронов, составляет от 5° до 50°С;β: полное число пикселей на цифровом изображении в зоне измерения при использовании диаграммы направленности обратного рассеяния электронов;ε: ширина шага при анализе диаграммы направленности обратного рассеяния электронов (мкм);δ: ширина межзеренной границы (мкм).2. Труба по п.1, в которой размер кристаллического зерна в стальной трубе равен ...

СПОСОБ ИЗВЛЕЧЕНИЯ ИЗ ФОРМЫ ДЛЯ ЛИТЬЯ ЛИТОЙ ЗАГОТОВКИ, ОТЛИТОЙ ИЗ ЛЁГКОГО СПЛАВА

СПОСОБ ИЗГОТОВЛЕНИЯ МЕТАЛЛИЧЕСКОЙ ДЕТАЛИ

... 1. Способ изготовления (200) металлической детали (30), в котором:- позиционируют на этапе (230), по меньшей мере, одну извилистую металлическую полоску (102, 102'), выполненную из гибкой металлической фольги, содержащей множество выемок, на формующем оборудовании (410, 420), при этом упомянутая металлическая извилистая полоска выполнена деформируемой вручную в холодном состоянии в трех направлениях в пространстве (X, Y, Z);- производят на этапе (240) изостатическое прессование упомянутой, по меньшей мере, одной металлической извилистой полоски (102, 102') в оборудовании (400), осуществляющем спекание упомянутой металлической извилистой полоски (102, 102') для получения упомянутой металлической детали (30).2. Способ по п.1, отличающийся тем, что перед упомянутым этапом (230) позиционирования вырезают на этапе (220) множество выемок (110), по меньшей мере, в одной гибкой металлической извилистой полоске (101) для формирования, по меньшей мере, одной извилистой металлической полоски (102, ...

Затрубный барьер, имеющий скважинный разжимной трубчатый элемент

СПОСОБ РЕМОНТА ПЕРА ЛОПАТКИ

... 1. Способ ремонта пера лопатки, при котором на пере лопатки выбирают линию ремонтного сечения и отрезают дефектную часть пера лопатки, сборку вставки и пера лопатки осуществляют в замок по линии ремонтного сечения, электронно-лучевую сварку ведут со сквозным проплавлением при постоянной фокусировке и скорости сварки, а затем осуществляют термическую обработку сварного соединения, отличающийся тем, что линию ремонтного сечения выбирают в зоне несовпадения максимальных вибрационных нагрузок, входную кромку пера устанавливают на полке вставки, на спинке пера с перекрытием входной кромки пера размещают пластину, причем суммарная толщина пластины и пера лопатки по всему ремонтному сечению равна толщине профиля пера в ремонтном сечении, сварку сквозным проплавлением ведут от торца пера к выходной кромке пера, второй проход осуществляют со смещением электронного луча на вставку, а термическую обработку производят сканирующим электронным лучом. 2. Способ ремонта пера лопатки по п.1, отличающийся ...

СТАЛЬ ДЛЯ ХОЛОДНОЙ ОБРАБОТКИ И ИНСТРУМЕНТ ДЛЯ ХОЛОДНОЙ ОБРАБОТКИ

... 1. Сталь для холодной обработки, отличающаяся тем, что она имеет следующий химический состав, мас.%: 0,60-0,85 С от следовых количеств до 1,5 (Si+Al) 0,1-2,0 Mn 3,0-7,0 Cr 1,5-4,0 (Mo+W/2), однако максимум 1,0 W 0,3-0,65 V максимум 0,1 каждого из Nb, Ti и Zr максимум 2,0 Со максимум 2,0 Ni остаток составляют железо и неизбежные примеси. 2. Сталь для холодной обработки по п.1, отличающаяся тем, что она содержит по меньшей мере 0,63, предпочтительно по меньшей мере 0,68 С. 3. Сталь для холодной обработки по п.2, отличающаяся тем, что она содержит максимум 0,8, предпочтительно максимум 0,78 С. 4. Сталь для холодной обработки по п.1, отличающаяся тем, что она содержит по меньшей мере 0,35, предпочтительно по меньшей мере 0,42 V. 5. Сталь для холодной обработки по п.4, отличающаяся тем, что она содержит максимум 0,6, предпочтительно максимум 0,55 V. 6. Сталь для холодной обработки по п.1, отличающаяся тем, что она содержит приблизительно 0,72 С и приблизительно 0,50 V. 7. Сталь для холодной ...

DEVICE FOR COOLING OF ROLLED PROFILE

Formstahl hoher Festigkeit, Zähigkeit und Hitzebeständigkeit und Formstahlherstellungsverfahren durch Walzen

Verfahren und Vorrichtung zum kontinuierlichen Behandeln im Magnetfeld von Transformatorenkernen aus amorphen Metallen

Verfahren zur Herstellung von einer spanabhebenden Bearbeitung unterzogenen und hiernach waerme-behandelten Schlagwerkzeugen

Verfahren zur Herstellung eines durch U-O-Formen hergestellten Blechumformbauteils sowie Blechumformbauteil

Die Erfindung betrifft ein Verfahren zur Herstellung eines Blechumformbauteils 1 aus einer Platine mittels U-O Formen, wobei zunächst eine Vorform 5 durch das U-Formen erzeugt wird und anschließend eine Endformgebung zu einer Endform 13 durch das O-Formen durchgeführt wird, wobei die Vorform 5 in einem Querschnitt eine maximale Breite B5 aufweist, die kleiner ist als die maximale Breite B13 der nach dem O-Formen hergestellten Endform 13.

Verfahren zur Herstellung eines pressgehärteten Bauteils

Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Stahlbauteils umfassend ein Substrat und einen Überzug, ein entsprechendes Stahlbauteil und dessen Verwendung im Automobilsektor.

Ferritischer Werkstoff für ein Antriebssystem

Die vorliegende Erfindung betrifft einen ferritischen Werkstoff für ein Antriebssystem (1), insbesondere eines Kraftfahrzeugs (2).Eine verbesserte Beständigkeit des Werkstoffs bei zugleich niedrigen Herstellungskosten wird durch folgende Zusammensetzung erreicht:- C: 1,5 - 3,5 Gew.-%,- Cr: 30 - 37 Gew.-%,- Mo: 3,0 - 8,0 Gew.-%,- V: 1,5 - 5,5 Gew.-%,- Si 1,5 -4,0 Gew.-%,- Mn: 0,2 - 1,5 Gew.-%,- Ni: 0 - 1 Gew.-%,- N: 0-0,5% Gew.-%,- Restanteil mit Fe als Hauptbestandteil,- herstellungsbedingte Verunreinigungen.Die Erfindung betrifft des Weiteren ein Antriebssystem (1) mit einem solchen Werkstoff.

Martensitic age-hardening process for esp. alloyed steel inlet valves

Uni-metallic valves, esp. alloyed steel inlet valves for internal combustion engines, undergo martensitic age-hardening using a process involving annealing at approximately 950 deg C, quenching, then tempering at 200\!20 deg C, resulting in a hardness of 57\!3 HRC.

Component for transmission of power and motion, has power transmission elements, particularly toothing or thread, and power transmission elements are molded under hot shaping by compression mold

The component has power transmission elements, particularly a toothing (1) or a thread. The power transmission elements are molded under hot shaping by a compression mold or heat treated under cooling down by a compression mold from a preset initial temperature to a preset end temperature in a preset period. The component is manufactured from a material hardened by the heat treatment.

ZWEISTUFIGE WARMUMFORMUNG VON STAHL

Verfahren für das Presshärten von Stahllegierungen, die aus mittlerem Mn bestehen, werden bereitgestellt. Die pressgehärtete Stahllegierung kann eine Zugfestigkeit von mindestens 1700 MPa und eine Zugdehnung von mindestens 8 % aufweisen. Die pressgehärtete Stahllegierung kann in zwei Formungsschritten oberhalb der martensitischen Endtemperatur geformt werden. Der pressgehärtete Stahl kann eine Mikrostruktur aufweisen, die Martensit mit mehr als oder gleich etwa 80 % bis weniger als oder gleich etwa 98 % und Restaustenit mit weniger als oder gleich etwa 20 % bis mehr als oder gleich etwa 2 % umfasst.

KALTGEFORMTE, FLACHGEWALZTE STAHLPROFILE

Verfahren zur Herstellung eines Formgedächtnis-Bauteils mit Umwandlungsfunktionalität

Die Erfindung betrifft ein Verfahren zur Herstellung eines Formgedächtnis-Bauteils mit einer Umwandlungsfunktionalität. Die Umwandlungsfunktionalität ist einmalig aktivierbar. Das Verfahren weist die folgenden Schritte auf:A) Bereitstellen eines Rohlings, bestehend aus einer Fe-basierten Formgedächtnislegierung,B) Umformen des Rohlings von einem Ausgangszustand in einen ersten Umformzustand derart, dass sich im Rohling wenigstens eine erste Martensitphase und eine zweite Martensitphase bilden,C) Wärmebehandeln des in Schritt B umgeformten Rohlings,D) Umformen des in Schritt C wärmebehandelten Rohlings. Die Erfindung betrifft zudem ein Formgedächtnis-Bauteil.

Verfahren zur Herstellung und Reparatur eines integral beschaufelten Rotors

Verfahren und Vorrichtung zur Beschichtung oder Wärmebehandlung von BLISK- Scheiben für Fluggasturbinen

Verfahren zur Oberflächenbehandlung von Bauteilen aus Stahl und oberflächenbehandelte Bauteile aus Stahl

Leichtbau-Kurbeltrieb und Herstellungsverfahren desselben

Leichtbau-Kurbeltrieb mit Komponenten aus ultrahochkohlenstoffhaltigem Leichtbaustahl (UHC-Leichtbaustahl), umfassend eine Kurbelwelle, ein Pleuel mit einem großen und einem kleinen Pleuelauge und einen Kolbenbolzen, wobei die Kurbelwelle in dem großen Pleuelauge und der Kolbenbolzen in dem kleinen Pleuelauge gelagert sind, wobei alle der Komponenten Kurbelwelle, Pleuel und Kolbenbolzen aus dem UHC-Leichtbaustahl bestehen und wobei der Kolbenbolzen eine Hartstoff-Beschichtung aufweist. dadurch gekennzeichnet, dass das Kurbelwellenlager in dem großen Pleuelauge aus zumindest zwei thermischen Spritzschichten gebildet wird, die aus unterschiedlichen Lager-Metalllegierungen bestehen und dass eine die Oberfläche des großen Pleuelauges bildende Spritzschicht durch eine Aluminium-Wismut-Legierung und die unter der Aluminium-Wismut-Legierungs-Spritzschicht liegende Schicht aus einer Lager-Metalllegierung aus Bronze, Messing, einer Aluminiumbronze oder einer Aluminium-Wismut-Legierung gebildet ist ...

Improvements in or relating to steel pellets

Steel pellets for use in blast cleaning and blast peening are made of a steel having the composition C 0.1-1.7 per cent; Si 0.3-1.0 per cent; Mn 0.3-2.0 per cent; Fe the balance. The alloy may also include one or more of the following elements: Cr up to 5.0 per cent; Mo up to 5.0 per cent; V up to 0.4 per cent; Ni up to 2.5 per cent; Cu up to 1.0 per cent.

Process for producing constant velocity joint having improved cold workability and strength

Disclosed is a process for producing a constant velocity having improved rolling fatigue life and torsional strength properties without sacrificing cold workability, such as cold forgeability or machinability. The process for producing a constant velocity joint having improved cold workability, rolling fatigue life, and torsional strength comprises the steps of: rolling or forging an alloy at a heating temperature of Ac3 to 1000{C with a reduction in area of not less than 30%, said alloy comprising by weight carbon: 0.52 to 0.60%, silicon: 0.03 to 0.15%, manganese: 0.10 to 0.40%, chromium: 0.05 to 0.30%, molybdenum: 0.10 to 0.30%, sulfur: 0.003 to 0.020%, boron: 0.0005 to 0.005%, titanium: 0.02 to 0.05%, nitrogen: not more than 0.01%, aluminum: 0.005 to 0.05%, and manganese + chromium + molybdenum: 0.35 to 0.80% with the balance consisting of iron and unavoidable impurities; spheroidizing the rolled or forged alloy in such a manner that, after heating to Ac1 to 770{C, ...

Thermal processing apparatus and method

There is disclosed apparatus (10) for use in the thermal processing of a component (1) such as an aero-engine turbine or compressor blade. The apparatus (10) comprises holding means (13) for retaining a first part of the component (1) in a fixed position and forming means (21) spaced from the holding means (13) and adapted to hold a second part of the component (1) in a desired position and/or orientation relative to the first part. In use, a component (1) is mounted within the apparatus (10) such that a first part of the component (1) is retained by the holding means (13) in a fixed position. The forming means (21) is then applied to a second part of the component (1) such that it is held in a desired position and/or orientation relative to the first part. The component (1), whilst held in the apparatus (10) is then subjected to thermal treatment, eg by being placed in a preheated oven, typically at 500-700{C for a period of several hours.

Steel profile and method of processing steel

Method of manufacturing an aerofoil

MANUFACTURING HOOKES JOINT CROSS-MEMBER

Device for treating body panels

Manufacturing dog spikes

This invention provides a method of manufacturing dog spikes and a preferred furnace for use with this method wherein the method comprises cutting mild steel sheet into strips, heating the strips to red heat and cutting dog spikes from the red hot strips using a nail cutting machine, thereby avoiding an annealing step required by prior art methods. The preferred furnace comprises a furnace casing provided with portions which are adapted to receive strips of mild steel plate whereby the strips are supported across the width of the furnace which enables uniform heating of the strips.

HEAT TREATMENT METHOD AND APPARATUS

DIFFERENTIAL COOLING OF SURFACES OF COMPONENT

THERMAL TREATMENT AND SAND DISTANCE OF CAST PARTS

VERFAHREN ZUR HERSTELLUNG EINES EROSIONSSCHUTZES FUER TURBINENSCHAUFELN

PROCEDURE FOR THE PRODUCTION AND THERMAL TREATMENT OF A MAJORITY OF METALLGUSTEILEN

PROCEDURE FOR THE PRODUCTION OF A VALVE FOR A COMBUSTION ENGINE AND THEREBY MANUFACTURED A VALVE

PROCEDURE FOR THE PRODUCTION OF A HIGH-STRENGTH PART

PROCEDURE FOR THE PRODUCTION OF AN EROSION PROTECTION FOR TURBINE BLADES

PROCEDURE AND DEVICE FOR ZONENHARTUNG DUNNWANDIGER STEEL PLANT STUCCO, IN PARTICULAR OF SCRATCH CHAIN DEMAND GUTTERS

PROCEDURE FOR THE PRODUCTION OF HARDENING THROW SHOVELS FOR CENTRIFUGAL FORCE RADIATION DEVICES

PROCEDURE AND DEVICE FOR THE HEAT TREATING OF WORKPIECES

DEVICE AND PROCEDURE FOR FORMING AND DETERRING A CARRIER

VERFAHREN ZUM ERWÄRMEN EINES FORMBAUTEILS FÜR EIN ANSCHLIESSENDES PRESSHÄRTEN SOWIE DURCHLAUFOFEN ZUM BEREICHSWEISEN ERWÄRMEN EINES AUF EINE VORGEGEBENE TEMPERATUR VORGEWÄRMTEN FORMBAUTEILS AUF EINE HÖHERE TEMPERATUR

TIFF 00000011.TIF 294 208 TIFF 00000012.TIF 294 208 ...

VORRICHTUNG ZUR WÄRMEBEHANDLUNG VON BLECHZUSCHNITTEN

Es wird eine Vorrichtung zur Wärmebehandlung von Blechzuschnitten (11) mit einem über Brenner (8) beheizbaren Durchlaufofen (1) und mit einer Fördereinrichtung für die Blechzuschnitte (11) beschrieben. Um eine kurze Ofenlänge zu erreichen, wird vorgeschlagen, dass der Durchlaufofen (1) der Höhe nach in eine untere mit den Brennern (8) versehene Heizkammer (3) und eine von dieser Heizkammer (3) durch eine Zwischendecke (2) mit Rauchgasdurchtritten (16) getrennte Vorwärmkammer (4) unterteilt ist, dass die Fördereinrichtung einen die Vorwärmkammer (4) durchsetzenden Förderer (5) und zwei übereinander angeordnete, die Heizkammer (3) durchsetzende Förderer (6, 7) umfasst, die eine zum Förderer (5) der Vorwärmkammer (4) entgegengesetzte Förderrichtung mit einer der halben Fördergeschwindigkeit des Förderers (5) in der Vorwärmkammer (4) entsprechenden Fördergeschwindigkeit aufweisen, und dass zwischen dem Ablauf des Förderers (5) der Vorwärmkammer (4) und den Zulaufen der beiden Förderer (6, 7 ...

In-Line Verfahren und In-Line Fertigungsanlage

The invention relates to an in-line method for producing workpieces or assemblies (2), in which method workpieces or assemblies (2) pass through a number of successive work stations (4) by means of a conveyor device (3). Said method is characterised by a hardening step that is carried out in one of the work stations (4), during which step at least one region of the workpiece or assembly (2) is hardened by the application of at least one laser hardening trace (6) by means of a laser device (5), in particular a laser with programmable focussing optics (PFO), or a linear laser. The invention also relates to a corresponding in-line production plant.

Verfahren zur Herstellung von Schneidmessern

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Einweg- Schneidmessern, mit profiliertem Querschnitt für eine Einrichtung zum Spanen von Holz und ein Einweg-Schneidmesser. Um eine verbesserte Messergüte sicherzustellen, einen hochwirtschaftlichen Betrieb der Einrichtung zum Spanen von Holz zu ermöglichen und eine hohe Güte der Spane mit geringstem Abfall zu erreichen, ist erfindungsgemäß vorgesehen, dass in einem ersten Schritt ein Vormaterial aus härtbarem Stahl oder aus einer härtbaren Legierung im weichgeglühten Zustand und mit bearbeiteter Oberfläche auf eine Temperatur von über der Raumtemperatur, jedoch unterhalb der Umwandlungstemperatur Ac1, also im Bereich der kubisch-raumzentrierten Atomstruktur des Werkstoffes erwärmt und zu einem Profilrohteil mit im Querschnitt zumindest einem maßgenauen Führungspfad (22) im Grundkörper (2) und mit erhöhter Dicke zumindest eines Kantenbereiches (3), vorzugsweise mit überfülltem Kaliber gewalzt wird, worauf in einem zweiten ...

COLD WORK STEEL AND COLD WORK TOOL

VERFAHREN ZUR HERSTELLUNG EINES EROSIONSSCHUTZES FUER TURBINENSCHAUFELN

Method of manufacturing a sintered component

Die Erfindung betrifft ein Verfahren zur Herstellung eines Sinterbauteils umfassend die Schritte: Bereitstellen eines metallischen Pulvers; Einfüllen des Pulvers in eine Pulverpresse, Pressen des Pulvers zu einem Grünling, Entfernen des Grünlings aus der Pulverpresse, Sintern des Grünlings zum Sinterbauteil mit Poren, Gegebenenfalls Nachverdichten des Sinterbauteils, Härten des Sinterbauteils, wobei die Poren des Sinterbauteils vor dem Härten zumindest im Bereich der Oberfläche des Sinterbauteils, der einer Härtung unterzogen wird, zumindest teilweise mit einem Füllmittel gefüllt werden.

PROCEDURES FOR THE PRODUCTION AND REPAIR AN INTEGRAL BLADED ROTOR

DEVICE FOR THE WATER COOLING OF FORMED WORK MATERIAL

PROCEDURE FOR ARRANGING SECTIONAL STEEL WITH SIMULTANEOUS MINIMIZATION OF THE INTERNAL VOLTAGES

PROCEDURE FOR THE CHANGE OF THE CHARACTERISTICS OF WORKPIECE SURFACES

PROCEDURE FOR THE PRODUCTION OF STRUCTURE PARTS IN THE AUTOMOTIVE MANUFACTURE

Scallop resistant idler heat treatment

An idler wheel (200) for use with a track chain (302) of a vehicle that includes a plurality of track pins (306) and bushings (308) comprises a main body (202) that includes a generally cylindrical configuration defining an axis of rotation (A), a circumferential direction (C) and a radial direction (R), the main body (202) including a central portion (204) disposed along the axis of rotation (A) defining an axial extremity of the radial portion, and at least a first outside portion (208) disposed along the axis of rotation (A) that includes alternating regions (244, 246) adjacent each other circumferentially having a different hardness relative to each other.

Method of near-net-shape forged molding of coupler knuckle of railway vehicle

The present invention provides a method of near-net-shape forged molding of the coupler knuckle of the railway vehicle. The present invention solves the problems that the manufacturing the forged coupler knuckle is difficult, and the process is complex, etc. The method of the present invention includes the following steps: material preparation, heating, blank prefabrication, pre-forging, closed-die forging, quenched tempered heat treatment using waste heat, finish machining, flaw detection, etc. With the closed-die forging technology, the near-net-shape molding of the coupler knuckle can be achieved. The energy and the material are saved. The contour shape and the size do not need to be machined. The use ratio of the material can reach more than 92%. Moreover, during the entire molding, the workpiece is in the three-dimensionally stressed state all the time. The product has a dense texture, a high toughness, a good fatigue resistance, and a long lifetime. The defects of the existing casted ...

Annular barrier having a downhole expandable tubular

The present invention relates to an annular barrier to be expanded in an annulus between a well tubular structure and an inside face of a casing or borehole downhole for providing zone isolation between a first zone and a second zone of the casing or borehole, the annular barrier having an axial extension and comprising : a tubular part, the tubular part being a separate tubular part or a casing part for mounting as part of the well tubular structure; a downhole expandable tubular to be expanded in the annulus downhole from a first outer diameter to a second outer diameter to abut against the inner face of the casing or borehole, the downhole expandable tubular having a first end section, a second end section and an intermediate section between the first end section and the second end section, the downhole expandable tubular surrounding the tubular part, each end section of the downhole expandable tubular being connected with the tubular part and extending along the axial extension, and ...

Steel and mould tool for plastic materials made of the steel

A forged roll meeting the requirements of the cold rolling industry and a method for production of such a roll

This invention relates in general to the field of forged rolls and to production of forged rolls. More particularly the present invention relates to forged rolls for use in the cold rolling industry. The present invention relates to a forged roll for use in the cold rolling industry and a method for production of such a roll. Said forged roll, comprises a steel composition and a microstructure that comprises: - tempered martensite with a retained austenite rate less than (<) 5 % per volume; and - an open eutectic carbide network with eutectic carbides of less than (<) 5 % per volume; and wherein the roll exhibits: - a hardness between 780-840HV; and - internal compressive between -300 to -500 MPa in absolute values.

RAPID COOLING OF HOT ROLLED METAL BARS

METHOD OF PROTECTING TURBO-MACHINE BLADES AGAINST STRESS CORROSION CRACKING

AUSTENITIC STAINLESS STEEL PIPE EXCELLENT IN STEAM OXIDATION RESISTANCE AND MANUFACTURING METHOD THEREFOR

Provided is an austenitic stainless steel tube having excellent steam oxidation resistance. The steam oxidation-resistant austenitic stainless steel tube contains, by mass %, 14-28% of Cr, and 6-30% of Ni, and has a region in the metal structure thereof at a depth of 5-20µm from the internal surface which fulfils the following formula. (a/ß)×d/e×100 = 0.3, with the symbols in general formula (1) representing the following. a is the total of the number of pixels in a digital image of a region in which the orientation difference detected using electron backscatter diffraction is 5-50 degrees between adjacent crystals; ß is the total number of pixels in the digital image of the region measured using electron backscatter diffraction pattern; e is the analysis pitch (µm) of the electron backscatter diffraction; and d is the grain boundary width (µm).

METHOD FOR INDUCTIVELY HEATING VALVE SEAT INSERTS

METHOD FOR INDUCTIVELY HEATING VALVE SEAT INSERTS ( ) A method for heating a conical valve seat surface on a ferrous seat ring insert which is fixedly received by a bore in an aluminum engine component. The method involves high power induction heating including the steps of locating an inductor adjacent the valve seat surface and then energizing the inductor by a power source having some predetermined frequency and elevated power rating. The method also includes the step of maintaining the inductor in an energized condition for some predetermined period of time to transform the metal forming the valve seat into an austenitic structure to a preselected depth. The steps of energizing and maintaining are coordinated such that the desired transformation is obtained in a very short time interval. This then advantageously prevents deleterious expansion of the insert heat transfer through the insert to the aluminum engine component which would otherwise adversely affect the close fitting relationship ...

BUCKET TOOTH AND METHOD OF MANUFACTURING THE SAME

A bucket tooth capable of preventing a bolt from being loosened during operation is provided. In order to allow the bucket tooth to generate a resilient return force after attachment, a warp is caused by resilient deformation so that a face on the bucket lip side becomes a concave face. As another means, a spot facing portion is formed around a bolt hole into which a fastening bolt is inserted, on the side facing the bucket lip.

RAILWAY WHEEL

Provided is a railway wheel having exceptional corrosion fatigue resistance characteristics. The railway wheel according to the present embodiment has a chemical composition containing, in mass%, 0.65-0.80% of C, 0.10-1.0% of Si, 0.10-1.0% of Mn, 0.030% or less of P, 0.030% or less of S, 0.05-0.20% of Cr, 0.005-0.50% of Sn, 0.010-0.050% of Al, 0.0020-0.015% of N, 0-0.20% of Cu, 0-0.20% of Ni, 0-0.20% of Mo, 0-0.20% of V, 0-0.030% of Nb, and 0-0.030% of Ti, the balance being Fe and impurities. The matrix structure of a sheet portion comprises pearlite.

AUSTENITIC STAINLESS STEEL AND PRODUCTION METHOD THEREFOR

An austenite stainless steel that has a chemical composition containing, in mass%, 0.015% or less of C, 1.00% or less of Si, 2.00% or less of Mn, 0.05% or less of P, 0.030% or less of S, not less than 16.0% but less than 22.0% of Cr, 11.0-16.0% of Ni, 2.5-5.0% of Mo, not less than 0.07% but less than 0.15% of N, 0.20-0.50% of Nb, 0.005-0.040% of Al, 0-0.080% of Sn, 0-0.0060% of Zn, and 0-0.030% of Pb, the remaining portion being Fe and impurities, and that satisfies [MoSS/Mo = 0.98] (MoSS: amount of Mo solids dissolved in Mo steel).

RAILWAY WHEEL

Provided is a railway wheel having exceptional corrosion fatigue resistance characteristics. The railway wheel according to the present embodiment has a chemical composition containing, in mass%, 0.65-0.80% of C, 0.10-1.0% of Si, 0.10-1.0% of Mn, 0.030% or less of P, 0.030% or less of S, 0.05-0.20% of Cr, 0.005-0.50% of Sn, 0.010-0.050% of Al, 0.0020-0.015% of N, 0-0.20% of Cu, 0-0.20% of Ni, 0-0.20% of Mo, 0-0.20% of V, 0-0.030% of Nb, and 0-0.030% of Ti, the balance being Fe and impurities. The matrix structure of a sheet portion comprises pearlite.

METHOD FOR MANUFACTURING CORE PLATE

Provided is a method for manufacturing a core plate (1) which has an annular core back (11) and a plurality of teeth (12) extending from the core back toward the center (O) thereof. The core plate is obtained by performing a punching step, a winding step, a strain machining step, and an annealing step. In the strain machining step, a compressive strain is imparted to the core back or a strip-shaped core back (21) that is to be formed into the core back after winding. In the annealing step following the strain machining step, the core back or the strip-shaped core back is recrystallized by annealing. This configuration enables improvement of magnetic properties in the teeth, and also enables prevention of deterioration in magnetic properties in the core back.

METHOD FOR MANUFACTURING CORE PLATE

Provided is a method for manufacturing a core plate (1) which has an annular core back (11) and a plurality of teeth (12) extending from the core back toward the center (O) thereof. The core plate is obtained by performing a punching step, a winding step, a strain machining step, and an annealing step. In the strain machining step, a compressive strain is imparted to the core back or a strip-shaped core back (21) that is to be formed into the core back after winding. In the annealing step following the strain machining step, the core back or the strip-shaped core back is recrystallized by annealing. This configuration enables improvement of magnetic properties in the teeth, and also enables prevention of deterioration in magnetic properties in the core back.

COLD FORMED FLAT-ROLLED STEEL STRUCTURAL MEMBERS

A method of making high-strength steel structural members is disclosed by providing a flat-rolled blank of high strength steel having a ferrite-pearlite microstructure and high-strength mechanical properties and cold forming the blank by rolling or the like to provide a structural member having a desired geometric cross- section while the mechanical strength of the structural member remains substantially the same or greater than the flat-rolled blank.

METHOD AND TOOL PRODUCT OF DIFFERENTIAL HEAT TREATMENT PROCESS

A tool having a relatively ductile working end for engaging workpieces and a relatively hard non-working portion for driving the tool is disclosed, and a process for making same. The tool is formed with the material in a first state, such as by cold-working, and then only the non--working portion is heat treated to a second state. The working end is thus maintained in the ductile state while the non-working portion is hardened, thus imparting different materials performance characteristics to working end and non-working portion.

STEEL STRUCTURE FOR HYDROGEN GAS, METHOD FOR PRODUCING HYDROGEN STORAGE TANK, AND METHOD FOR PRODUCING HYDROGEN LINE PIPE

Provided is a steel structure for hydrogen, such as a pressure accumulator for hydrogen or a line pipe for hydrogen, which has a reduced fatigue crack growth rate, and superior hydrogen embrittlement resistance in a high-pressure hydrogen environment compared to conventional steel. The steel structure for hydrogen, which has excellent hydrogen embrittlement resistance in high-pressure hydrogen gas, has a steel composition having either 10-95% bainite by surface area, 10-95% martensite by surface area, or 10-95% pearlite by surface area, with the remainder substantially comprising ferrite.

IMPACT RESISTANT DUCTILE IRON CASTINGS

A highly impact resistant ductile iron casting is made from a specified high nickel content ductile iron composition and post-treated with a specified heating and cooling profile to achieve an elongation exceeding the ASTM A536 ("60-40-18") standard, and meeting or exceeding Charpy V Notch impact resistance at -20°F of greater than 11.0 ft.cndot.lbs.

AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING THE SAME

There is provided an austenitic stainless steel having a high strength and an excellent hydrogen brittleness resistance and further having an excellent machinability. The austenitic stainless steel of the present embodiment has a chemical composition including: in mass%, C: 0.10% or less; Si: 1.0% or less; Mn: 2.1 to 6.0%; P: 0.045% or less; S: 0.1% or less; Ni: 8.0 to 16.0%; Cr: 15.0 to 30.0%; Mo: 1.0 to 5.0%; N: 0.05 to 0.45%; Nb: 0 to 0.50%; and V: 0 to 0.50%, with the balance being Fe and impurities, and satisfying Formula (1). The austenitic stainless steel of the present embodiment has a grain size number of less than 8.0 and a tensile strength of 690 MPa or more. 15 <= 12.6C + 1.05 Mn + Ni + 15N (1) ...

METHOD FOR MANUFACTURING A COMPONENT USING AN ADDITIVE MANUFACTURING PROCESS

The invention relates to a method for manufacturing a component (10), especially for gas turbines and other thermo machinery, comprising the steps of: Providing a data set defining said component (10) for being used in an additive manufacturing process; manufacturing said component (10) by means of said additive manufacturing process according to said data set; and subjecting said manufactured component (10) to a heat treatment (HT) in order to change the microstructure of said manufactured component (10). The properties of the component are improved in that: at least two different component volumes (CA1-CA3) are defined within said component (10) prior to the manufacturing step; at least two different process parameters (A, B) are chosen for said additive manufacturing process, which process parameters (A, B) result in different driving forces for a recrystallization and therefore a different recrystallization behavior in the material of said component (10); and said additive manufacturing ...

CORROSION AND WEAR RESISTANT COLD WORK TOOL STEEL

The invention relates to a corrosion and wear resistance cold work tool steel. The steel comprises the following main components (in wt. %): C0.3 0.8 N1.0 2.2 (C+N)1.3 2.2 C/N0.17 0.50 Si=1.0 Mn0.2 2.0 Cr13-30 Mo0.5 3.0 V2.0 5.0 balance optional elements, iron and impurities.

METHOD FOR MANUFACTURING PRESS-MOLDED ARTICLE, AND PRESS-MOLDED ARTICLE

Provided is a manufacturing method useful for obtaining a press-molded article having excellent softening prevention characteristics in heat-affected zones (HAZ), the press-molded article being able to achieve a high level of balance between high strength and stretchability by the following steps being performed: heating a steel plate for hot-pressing to a temperature of 900-1100°C inclusive, the steel plate for hot-pressing having a prescribed chemical composition, Ti-containing deposits included in the steel plate having an equivalent circular diameter of 30nm or less and an average equivalent circular diameter of 6nm or less, the amount of deposited Ti and the total amount of Ti in the steel satisfying a prescribed relationship; commencing press-molding after the steel plate is heated; cooling the steel plate during press-molding or after press-molding is completed inside the mold such that the steel plate reaches a temperature of at or below 100°C less than the bainite transformation ...

MAGNETOCALORIC MATERIALS

What are described are magnetocaloric materials of the general formula (MnxFe1-?)2+z P1-ySiy where 0.55 = x < 1 0.4 = y = 0.8 -0.1 = z = 0.1.

RAIL ANCHOR

Methods, systems, and apparatus, including an apparatus that is a rail anchor comprising a head, a tail, and a belly section. The belly section comprises a top surface, a bottom surface, and two side surfaces. Each side surface comprises a contact-bearing surface area. The head comprises a bend along a length of the head. The tail comprises a notch. Each contact-bearing surface area has a surface area of at least 3 square inches and is adapted to extend at least 1.5 inches downward from the top of a railroad track crosstie along a side of the railroad track crosstie.

STEEL FOR STEAM TURBINE BLADE WITH EXCELLENT STRENGTH AND TOUGHNESS

The present invention aim at providing a steel for steam turbine blades which is excellent in terms of strength and toughness. The steel of the present invention has a composition which contains, in terms of % by mass, 0.02-0.10% of C, up to 0.25% of Si, 0.001-0.10% of Mn, up to 0.010% of P, up to 0.010% of S, 8.5-10.0% of Ni, 10.5-13.0% of Cr, 2.0-2.5% of Mo, 0.001-0.010% of N, 1.15-1.50% of Al, less than 0.10% of Cu, up to 0.20% of Ti, and the remainder being incidental impurities and Fe, and which satisfies 6.0<=Ni/Al<=8.0, 9.0<=Nieq<=11.0 and 17.0<=Creq<=19.0, in which Nieq = [Ni]+0.11 [Mn]-0.0086([Mn]2)+0.44[Cu]+18 .4 [N] +24 .5 [C] Creq = [Cr]+1.21[Mo]+0.48[Si]+2.2[Ti]+2.48[Al].

STRUCTURAL STAINLESS STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AT WELD AND METHOD FOR MANUFACTURING SAME

Disclosed are: a structural stainless steel sheet which can be highly efficiently produced at low cost and has excellent corrosion resistance in a welded part; and a method for producing the structural stainless steel sheet. Specifically disclosed is a structural stainless steel sheet which contains, in mass%, 0.01-0.03% of C, 0.01-0.03% of N, 0.01-0.40% of Si, 1.5-2.5% of Mn, 0.04% or less of P, 0.02% or less of S, 0.05-0.15% of Al, 10-13% of Cr, 0.5-1.0% of Ni, and 4 × (C + N) or more but 0.3% or less of Ti, while controlling V to 0.05% or less, Ca to 0.0030% or less and O to 0.0080% or less. The structural stainless steel sheet is further characterized in that the F value obtained by Cr + 2 × Si + 4 × Ti - 2 × Ni - Mn - 30 × (C + N) is 11 or less, the FFV value obtained by Cr + 3 × Si + 16 × Ti + Mo + 2 × Al - 2 × Mn - 4 × (Ni + Cu) - 40 × (C + N) + 20 × V is 9.0 or less, and the balance of the structural stainless steel sheet is made up of Fe and unavoidable impurities.

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 Acl, 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.

HIGH-STRENGTH STEEL PARTS AND METHOD OF MAKING

High strength steel parts and method of making are disclosed by providing a blan k of high-strength steel material having a tensile strength of at least about 120,000 psi and a yield strength or at least about 90,000 psi and warm forming the blank to provide the part of desired geometric configuration while substantially maintain ing or increasing the strength properties of the blank.

Method and apparatus for hot forming and hardening a blank

A blank cut from a strip of hardenable hot-formed steel is heated in a furnace to a temperature which is smaller than an Ac 3 transformation point in an iron carbon diagram. A first region of the blank is then heated in a conductive heating station to a temperature above the Ac 3 transformation point and subsequently hardened in a hot forming and hardening tool to produce a steel part with at least two microstructured regions of different ductility.

Method for producing partially hardened steel components

The invention relates to a method for producing partially hardened steel components in which a blank is subjected to a temperature increase that is sufficient for a quench-hardening and after reaching a desired temperature, the blank is transferred to a forming tool in which the blank is quench-hardened or the blank is cold-formed and the component obtained by the cold-forming is then subjected to a temperature increase. During the heating of the blank or component, absorption masses rest against and/or are spaced with a small gap apart from regions that are intended to have a lower hardness and/or higher ductility; with regard to its expansion and thickness, its thermal conductivity, and its thermal capacity and/or with regard to its emissivity, the absorption mass is dimensioned so that the thermal energy acting on the component in the region to remain ductile flows through the component into the absorption mass.

Method for the local heat treatment of gas turbine blades

A method for heat-treating gas turbine blades, namely for locally heat-treating at least one gas turbine blade in a blade section thereof; a blade root section, which is not to be heat-treated, of the gas turbine blade being positioned in a holding receptacle to prevent an unacceptable heating of the particular blade root section, which is not to be heat-treated, during the heat treatment of the particular blade section. The blade root section of the gas turbine blade is positioned in an interior space in a way that allows a remaining interior space of the holding receptacle, to be filled with a filler material; the holding receptacle, together with the gas turbine blade, being subsequently positioned in a heat treatment chamber to enable the gas turbine blade in the heat treatment chamber to undergo local heat treatment under vacuum.

Austenitic stainless steel pipe excellent in steam oxidation resistance and manufacturing method therefor

There is provided an austenitic stainless steel pipe excellent in steam oxidation resistance. The austenitic stainless steel pipe excellent in steam oxidation resistance contains, by mass percent, 14 to 28% of Cr and 6 to 30% of Ni, and is configured so that a region satisfying the following Formula exists in a metal structure at a depth of 5 to 20 μm from the inner surface of the steel pipe: (α/β)×δ/ε×100≧0.3 where the meanings of symbols in the above Formula are as follows: α: sum total of the number of pixels of digital image in region in which orientation difference of adjacent crystals detected by electron backscattering pattern is 5 to 50 degrees β: the number of total pixels of digital image in region of measurement using electron backscattering pattern ε: analysis pitch width of electron backscattering pattern (μm) δ: grain boundary width (μm).

Automobile chassis part excellent in low cycle fatigue characteristics and method of production of same

An automobile chassis part which is excellent in low cycle fatigue characteristics, characterized by being formed by steel which contains, by mass %, C: 0.02 to 0.10%, Si: 0.05 to 1.0%, Mn: 0.3 to 2.5%, P: 0.03% or less, S: 0.01% or less, Ti: 0.005 to 0.1%, Al: 0.005 to 0.1%, N: 0.0005 to 0.006%, and B: 0.0001 to 0.01 and has a balance of Fe and unavoidable impurities, in which 80% or more of the part structure comprises a bainite structure and in which a portion where a ratio R/t of the thickness “t” and external surface curvature radius R is 5 or less has an X-ray half width of an (211) plane of 5 (deg) or less.

ALLOY CAST IRON AND MANUFACTURING METHOD OF ROLLING PISTON USING THE SAME

An alloy cast iron, and a method of manufacturing a rolling piston for a rotary compressor includes, by weight, 3.0˜3.5% carbon (C), 2.2˜2.4% silicon (Si), 0.5˜1.0% manganese (Mn), 0.1˜0.3% phosphorus (P), 0.06˜0.08% sulfur (S), 0.7˜1.0% chrome (Cr), 0.6˜1.0% copper (Cu), and a residue formed of Fe and inevitable impurities, wherein 3˜8 vol % steadite structure is formed. 1. An alloy cast iron comprising , by weight:3.0˜3.5% carbon (C);2.2˜2.4% silicon (Si);0.5˜1.0% manganese (Mn);0.1˜0.3% phosphorus (P);0.06˜0.08% sulfur (S);0.7˜1.0% chrome (Cr);0.6˜1.0% copper (Cu); anda residue formed of Fe and inevitable impurities,wherein 3˜8 vol % steadite structure is formed.2. The alloy cast iron of claim 1 , wherein the alloy cast iron undergoes a thermal processing including quenching and tempering.3. The alloy cast iron of claim 2 , wherein the quenching is performed by maintaining the alloy cast iron at 900±10° C. for 90˜150 minutes claim 2 , then by oil-cooling the alloy cast iron to 50˜90° C. claim 2 , and then by maintaining the alloy cast iron at 50˜90° C. for 5˜7 hours.4. The alloy cast iron of claim 3 , wherein the tempering is performed by maintaining the alloy cast iron at 250±10° C. for 150˜210 minutes claim 3 , and then by cooling the alloy cast iron to room temperature in air.5. The alloy cast iron of claim 4 , wherein the tempered alloy cast iron has a Rockwell hardness of 45˜55.6. A method of manufacturing a rolling piston for a rotary compressor claim 4 , the method comprising:a melting step of preparing a molten metal comprising, by weight, 3.0˜3.5% carbon (C), 2.2˜2.4% silicon (Si), 0.5˜1.0% manganese (Mn), 0.1˜0.3% phosphorus (P), 0.06˜0.08% sulfur (S), 0.7˜1.0% chrome (Cr), 0.6˜1.0% copper (Cu), and a residue formed of Fe and inevitable impurities;a casting step of pouring the molten metal in a mold and cooling thereby preparing a semi-product in which 3˜8 vol % steadite structure is formed;a grinding step of grinding the cooled semi-product to a ...

Structural stainless steel sheet having excellent corrosion resistance at weld and method for manufacturing same

A structural stainless steel sheet which can be manufactured at a low cost and with high efficiency, and possesses excellent welded-part corrosion resistance and a manufacturing method thereof are provided. The structural stainless steel sheet has a composition which contains by mass % 0.01 to 0.03% C, 0.01 to 0.03% N, 0.10 to 0.40% Si, 1.5 to 2.5% Mn, 0.04% or less P, 0.02% or less S, 0.05 to 0.15% Al, 10 to 13% Cr, 0.5 to 1.0% Ni, 4×(C+N) or more and 0.3% or less Ti, and Fe and unavoidable impurities as a balance, V, Ca and O in the unavoidable impurities being regulated to 0.05% or less V, 0.0030% or less Ca and 0.0080% or less O, wherein an F value expressed by Cr+2×Si+4×Ti−2×Ni−Mn−30×(C+N) satisfies a condition that F value≦11 and an FFV value expressed by Cr+3×Si+16×Ti+Mo+2×Al−2×Mn−4×(Ni+Cu)−40×(C+N)+20×V satisfies a condition that FFV value≦9.0.

WATCH-MAKING OR CLOCK-MAKING COMPONENT COMPRISING AN AMORPHOUS METAL ALLOY

The invention relates to a watch-making or clock-making component comprising an amorphous metal alloy corresponding to the formula: FeCoNiNbVBTa, in which: 0 Подробнее

OXIDATION RESISTANT FERRITIC STAINLESS STEEL, METHOD OF MANUFACTURING THE STEEL, AND FUEL CELL INTERCONNECT USING THE STEEL

An oxidation-resistant ferritic stainless steel including a ferritic stainless steel base material, and a Cu-containing spinel-structured oxide. 1. An oxidation-resistant ferritic stainless steel comprising:a ferritic stainless steel base material comprising Fe, Cr, Mn, and Cu; anda spinel-structured oxide containing Cu and at least one of Mn and Cr.2. The oxidation-resistant ferritic stainless steel of claim 1 , wherein an amount of Cu contained in the ferritic stainless steel base material is about 1.5 wt % to about 7.5 wt %.3. The oxidation-resistant ferritic stainless steel of claim 2 , wherein an amount of Cu contained in the ferritic stainless steel base material is about 1.5 wt% to about 3.4 wt%.4. The oxidation-resistant ferritic stainless steel of claim 1 , wherein the ferritic stainless steel base material further comprises Al claim 1 , Ti claim 1 , C claim 1 , and N.5. The oxidation-resistant ferritic stainless steel of claim 1 , wherein the ferritic stainless steel base material comprises about 10 to about 30 wt % of Cr claim 1 , about 0.3 wt % or less of Al claim 1 , about 0.1 to about 2.0 wt % of Mn claim 1 , about 0.02 to about 0.5 wt % of Ti claim 1 , about 0.2 wt % or less of C claim 1 , about 0.1 wt % or less of N claim 1 , about 0.01 to about 0.5 wt % of La claim 1 , about 1.5 to about 7.5 wt % of Cu claim 1 , and the rest of Fe.6. The oxidation-resistant ferritic stainless steel of claim 1 , wherein the spinel-structured oxide comprises at least one of an oxide represented by (Cu claim 1 , Cr)Oand an oxide represented by (Cu claim 1 , Mn)O.7. The oxidation-resistant ferritic stainless steel of claim 1 , wherein the spinel-structured oxide comprises at least one of an oxide represented by CuCrOand an oxide represented by CuMnO.8. The oxidation-resistant ferritic stainless steel of claim 1 , wherein the spinel-structured oxide comprises an oxide represented by CuCrO.9. A method of manufacturing an oxidation-resistance ferritic stainless steel claim ...

METHOD OF PREDICTING QUENCH CRACKING IN COMPONENTS FORMED BY HIGH DEFORMATION PROCESSES

A process for heat treating a component formed of an alloy. The process includes manipulating uniaxial strain test data of the alloy using a triaxiality factor to determine an equivalent multiaxial stress state. Conditions are then applied to the multiaxial stress state to identify a cooling path for the component. The cooling path includes boundaries for heat treatment temperatures and cooling rates that do not exceed predetermined stresses or strains and/or avoid predetermined residual stress patterns in the alloy. The component is then heated to a heat treatment temperature and quenched according to the cooling path identified in the applying step. 1. A process of heat treating a component formed of an alloy , the process comprising:manipulating uniaxial strain test data of the alloy using a triaxiality factor to determine an equivalent multiaxial stress state;applying conditions to the multiaxial stress state to identify a cooling path for the component, wherein the cooling path comprises boundaries for heat treatment temperatures and cooling rates that do not exceed predetermined stresses or strains and/or avoid predetermined residual stress patterns in the alloy; and thenheating the component to a heat treatment temperature and quenching the component according to the cooling path identified in the applying step.2. The process of to claim 1 , wherein the alloy is a precipitation-strengthened alloy.3. The process of claim 2 , wherein the precipitation-strengthened alloy is a nickel-base alloy comprising gamma prime precipitates.4. The process of claim 2 , further comprising performing uniaxial strain tests on the alloy to obtain the uniaxial strain test data prior to the manipulating step.5. The process of to claim 2 , wherein the temperature of the heating step is a supersolvus temperature of the precipitation-strengthened alloy.6. The process according to claim 2 , wherein the precipitation-strengthened alloy has a gamma prime volume fraction of about 49% and ...

BEARING STEEL AND INGOT MATERIAL FOR BEARING HAVING EXCELLENT ROLLING CONTACT FATIGUE LIFE CHARACTERISTICS AND METHOD FOR MANUFACTURING THE SAME

The present invention provides bearing steel, comprising a chemical composition including by mass %, C: 0.56%≧[% C]≦0.70%, Si: 0.15%≦[% Si]<0.50%, Mn: 0.60%≦[% Mn]≦1.50%, Cr: 0.50%≦[% Cr]≦1.10%, Mo: 0.05%≦[% Mo]≦0.5%, P: [% P]≦0.025%, S: [% S]≦0.025%, Al: 0.005%≦[% Al]≦0.500%, O: [% O]≦0.0015%, N: 0.0030%≦[% N]≦0.015%, and remainder as Fe and incidental impurities. 1. Bearing steel , comprising a chemical composition including by mass % ,C: 0.56% to 0.70% (inclusive of 0.56% and 0.70%),Si: 0.15% to 0.50% (inclusive of 0.15% and exclusive of 0.50%)Mn: 0.60% to 1.50% (inclusive of 0.60% and 1.50%),Cr: 0.50% to 1.10% (inclusive of 0.50% and 1.10%),Mo: 0.05% to 0.5% (inclusive of 0.05% and 0.5%),P: 0.025% or less,S: 0.025% or lessAl: 0.005% to 0.500% (inclusive of 0.005% and 0.500%),O: 0.0015% or lessN: 0.0030% to 0.015% (inclusive of 0.0030% and 0.015%), and remainder as Fe and incidental impurities, [{'br': None, 'i': 'Ec', '=(−0.07×[% Si]−0.03×[% Mn]+0.04×[% Cr]−0.36×[% Al]+0.79)−[% C]\u2003\u2003(1)'}, {'br': None, 'i': C', '/C, 'sub': Mo(max)', 'Mo(ave), 'Degree of segregation=\u2003\u2003(2)'}], 'wherein “eutectic carbide formation index Ec” represented by following formula (1) is in the range of 0 Подробнее

AUTOMOBILE PART, MANUFACTURING METHOD FOR SAME AND MANUFACTURING DEVICE OF SAME

Provided is a manufacturing apparatus for an automobile part, comprising: a conveying path () for transferring an outer joint member () which is made of a metal and has an outer surface coated with a coating agent after induction quenching; and high-frequency induction coils () arranged along an automobile part transferring direction of the conveying path (), for simultaneously performing tempering of the outer joint member () and baking of the coating agent. 1. A manufacturing method for an automobile part , comprising:induction quenching an automobile part made of a metal;applying a coating agent onto an outer surface of the automobile part after the induction quenching; andperforming tempering of the automobile part and baking of the coating agent simultaneously by high-frequency induction heating.2. A manufacturing method for an automobile part according to claim 1 , wherein the coating agent comprises a powder coating.3. A manufacturing method for an automobile part according to claim 1 , wherein the automobile part comprises an outer joint member for forming a constant velocity universal joint.4. A manufacturing method for an automobile part according to claim 1 , wherein the automobile part comprises an intermediate shaft for forming a drive shaft.5. A manufacturing apparatus for an automobile part claim 1 , comprising:a conveying path for transferring an automobile part which is made of a metal and has an outer surface coated with a coating agent after induction quenching; anda high-frequency induction coil arranged along an automobile part transferring direction of the conveying path, for simultaneously performing tempering of the automobile part and baking of the coating agent.6. A manufacturing apparatus for an automobile part according to claim 5 , wherein the high-frequency induction coil is arranged so that a part of the high-frequency induction coil extends in a straight manner along the automobile part transferring direction on both sides of the ...

Rail anchor

Methods, systems, and apparatus, including an apparatus that is a rail anchor comprising a head, a tail, and a belly section. The belly section comprises a top surface, a bottom surface, and two side surfaces. Each side surface comprises a contact-bearing surface area. The head comprises a bend along a length of the head. The tail comprises a notch. Each contact-bearing surface area has a surface area of at least 3 square inches and is adapted to extend at least 1.5 inches downward from the top of a railroad track crosstie along a side of the railroad track crosstie.

Ultra-High Strength Stainless Alloy Strip, a Method of Making Same, and a Method of Using Same for Making a Golf Club Head

A stainless steel strip article is disclosed. The article is formed from a corrosion resistant alloy having the following composition in weight percent, about: 2. An elongated strip article as claimed in wherein the strip has a thickness of about 0.02 to 0.16 inches.3. An elongated strip article as claimed in wherein the alloy has an average grain size not greater than about ASTM 7-8 in major dimension.4. An elongated strip article as claimed in which has a hardness of about 53-54 HRC.6. A method as claimed in wherein the step of heat treating the elongated strip material comprises the steps of:heating the elongated strip material at a temperature of about 1900-2000° F.; and thenheating the elongated strip material at a temperature of about 900° F. to about 950° F.7. A method as claimed in wherein the first heating step comprises heating the alloy at a temperature of about 1900-1950° F. and the method comprises the following steps between the heating steps:rapidly cooling the alloy to about −100° F.; and thenholding the alloy at about −100° F. for a period of time to substantially completely transform any austenite in the alloy to martensite.8. A method as claimed in wherein the step of mechanically working the ingot comprises the steps of:pressing the ingot to form a billet; and thenhot rolling the billet to form the elongated strip material.9. A method as claimed in wherein the step of mechanically working the ingot comprises hot rolling the ingot to form the elongated strip material.10. A method as claimed in wherein the hot rolling step comprises heating the billet to about 1900-2250° F.12. A method as claimed in wherein the step of heat treating the golf club heat assembly comprises the steps of:heating the elongated strip material at a temperature of about 1900-2000° F.; and thenheating the elongated strip material at a temperature of about 900° F. to about 950° F.13. A method as claimed in wherein the first heating step comprises heating the golf club heat ...

METALLIC GLASS ORTHODONTIC APPLIANCES AND METHODS FOR THEIR MANUFACTURE

An orthodontic appliance for use in orthodontic treatment. The orthodontic appliance is selected from the group consisting of an orthodontic bracket, an orthodontic archwire, an orthodontic tool, and a discrete component thereof. The orthodontic appliance is made of a metallic glass. The orthodontic appliance may be an orthodontic bracket for coupling an archwire with a tooth. The orthodontic bracket comprises a bracket body including an archwire slot, the bracket body being made of a metallic glass. The orthodontic bracket further comprises a movable member made of a metallic glass and operatively coupled to the bracket body and movable between an opened position in which the archwire is insertable into the archwire slot and a closed position in which the movable member retains the archwire in the archwire slot. The orthodontic bracket further comprises a pin coupling the movable member to the bracket body. 1. An orthodontic appliance for use in orthodontic treatment selected from the group consisting of an orthodontic bracket , an orthodontic archwire , an orthodontic tool , and a discrete component thereof , the orthodontic appliance being made of a metallic glass.2. The orthodontic appliance of wherein the orthodontic appliance is an orthodontic bracket for coupling an archwire with a tooth claim 1 , the orthodontic bracket comprising:a bracket body including an archwire slot, the bracket body being made of a metallic glass;a movable member made of a metallic glass and operatively coupled to the bracket body and movable between an opened position in which the archwire is insertable into the archwire slot and a closed position in which the movable member retains the archwire in the archwire slot; anda pin coupling the movable member to the bracket body.3. The orthodontic appliance of wherein the movable member is a ligating slide having a plate-like configuration including an archwire slot covering portion extending over the archwire slot when the ligating slide ...

PRIMARY MATERIAL FOR MOLDS ADAPTED TO MOLD PLASTICS

A mold material having a material hardness higher than 340 HB and a fine-grain structure. The mold material having a composition in weight percent that includes: 2. The primary material of claim 1 , wherein the material hardness is between 355 HB and 410 HB.3. The primary material of claim 1 , wherein C is between 0.30 and 0.34 weight percent.4. The primary material of claim 1 , wherein Ni is between 0.38 and 0.90 weight percent.5. The primary material of claim 1 , wherein the composition satisfies the formula D=Mn+2Ni and has a value between 2.20 and 3.50.6. The primary material of claim 1 , wherein Mo is between 0.40 and 0.70 weight percent.7. The primary material of claim 1 , wherein V is between 0.015 and 0.18 weight percent.8. The primary material of claim 1 , wherein N is between 0.005 and 0.01 weight percent.9. The primary material of claim 1 , wherein S is than 0.01 weight percent.10. The primary material of claim 1 , wherein the impurities are manufacturing-specific impurities.12. The material of claim 11 , wherein the material hardness is between 355 HB and 410 HB.13. The material of claim 11 , wherein C is between 0.30 and 0.34 weight percent.14. The material of claim 11 , wherein Ni is between 0.38 and 0.90 weight percent.15. The material of claim 11 , wherein the composition satisfies the formula D=Mn+2Ni and has a value between 2.20 and 3.50.16. The material of claim 11 , wherein Mo is between 0.40 and 0.70 weight percent.17. The material of claim 11 , wherein V is between 0.015 and 0.18 weight percent.18. The material of claim 11 , wherein N is between 0.005 and 0.01 weight percent.19. The material of claim 11 , wherein S is than 0.01 weight percent. The present application claims priority under 35 U.S.C. §119 of German Patent Application No. 202012003298.4, filed Mar. 30, 2012, the disclosure of which is expressly incorporated by reference herein in its entirety.1. Field of the InventionThe invention relates to a primary material utilized in making a ...

Impeller manufacturing method

The present invention relates to an impeller manufacturing method in which a thermal cycle is performed on an assembly body with a brazing material formed of a Ni-containing Au alloy being placed at a bond portion of at least two impeller constituent members. The thermal cycle includes a temperature increasing process with a temperature increasing rate of 20° C./hr. to 100° C./hr., the process including a first intermediate retention and a second intermediate retention each keeping the temperature, the first intermediate retention performed in a temperature range of 500° C. to 850° C. and the second intermediate retention performed in a temperature range of 850° C. to 950° C. (but not including 850° C.). In the thermal cycle, the temperature is increased in a temperature range exceeding 950° C. after the second intermediate retention at a rate lower than that before the second intermediate retention.

Method for manufacturing high-strength steel sheet parts subject in use to fatigue stresses

The manufacturing method comprises the steps of: carrying out one or more forming operations so as to give the desired geometry to the part; and subjecting the part thus formed to a single heat treatment having only a stress relieving treatment, which is preferably carried out at a temperature in the range from 530° C. to 580° C. for a time in the interval from 45 to 60 minutes and is followed by cooling of the part in air. By virtue of the formed part being subjected to a stress relieving heat treatment, the residual stress state due to the initial forming process and to the bead welding, if any, is eliminated or at least significantly reduced.

Hot stamped article, method of producing hot stamped article, energy absorbing member, and method of producing energy absorbing member

A hot stamped article has a component composition containing, in terms of % by mass, 0.002% to 0.1% of C, 0.01% to 0.5% of Si, 0.5% to 2.5% of Mn+Cr, 0.1% or less of P, 0.01% or less of S, 0.05% or less of t-Al, 0.005% or less of N, and 0.0005% to 0.004% of B which is optionally contained in a case where the Mn+Cr is 1.0% or more, the remainder being Fe and unavoidable impurities. The hot stamped article has a microstructure composed of, in terms of an area ratio, 0% or more and less than 90% of martensite, 10% to 100% of bainite, and less than 0.5% of unavoidable inclusion structures, or a microstructure composed of, in terms of an area ratio, 99.5% to 100% of bainitic ferrite, and less than 0.5% of unavoidable inclusion structures.

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 ...

Hot-press formed product and method for manufacturing same

Provided is a hot-press molded article that can achieve a high level of balance between high strength and extension by region and has a region corresponding to an energy absorption site and a shock resistant site within a single molded article without applying a welding method by means of having first region having a metal structure containing both 80-97 area % of martensite and 3-20 area % of residual austenite, the remaining structure comprising no more than 5 area %, and a second region having a metal structure comprising 30-80 area % of ferrite, less than 30 area % (exclusive of 0 area %) of bainitic ferrite, no greater than 30 area % (exclusive of 0 area %) of martensite, and 3-20 area % of residual austenite.

BATCH ANNEALING FURNACE FOR COILS

A batch annealing furnace includes a coil support base on which an end face of a coil is mounted and that supports the coil with an axis of the coil being upright, an inner cover that covers an entire body of the coil mounted on the coil support base, and a cooling pipe that extends downward from the upper part of the inner cover to a cavity of the inner peripheral part of the coil mounted on the coil support base and cools the coil from the inner surface side by passing a coolant through the inside of the cooling pipe. 1. A batch annealing furnace for coils configured to anneal a coil in which a steel sheet is wound , the batch annealing furnace comprising:a coil support base on which an end face of the coil is mounted and that supports the coil with an axis of the coil being upright;an inner cover that covers an entire body of the coil mounted on the coil support base; anda cooling pipe that extends downward from an upper part of the inner cover to a cavity of an inner peripheral part of the coil mounted on the coil support base and cools the coil from an inner surf ace side by passing a coolant through inside of the cooling pipe.2. The batch annealing furnace for coils according to claim 1 , whereinthe cooling pipe comprises a double pipe comprising a cylindrical inner pipe and a cylindrical outer pipe that surrounds the inner pipe, the inner pipe serves as an introduction pipeline that introduces the coolant from the upper part of the inner cover toward the coil support base, and an area between the outer pipe and the inner pipe serves as a return pipeline that returns the coolant from the coil support base toward the upper part of the inner cover, andat a location where a direction of flow of the coolant passing through the introduction pipeline and the return pipeline changes, a bottom plate having a semispherical shape convex downward whose diameter is half the radius of the outer pipe or more reverses the direction.3. The batch annealing furnace for coils ...

TITANIUM-FREE ALLOY

Titanium-free alloy which has great resistance to pitting and crevice corrosion and a high yield point in the strain-hardened state and includes (in wt %) a maximum of 0.02% C, a maximum of 0.01% S, a maximum of 0.03% N, 20.0-23.0% Cr, 39.0-44.0% Ni, 0.4-<1.0% Mn, 0.1-<0.5% Si, >4.0-<7.0% Mo, a maximum of 0.15% Nb, >1.5-<2.5% Cu, 0.05-<0.3% Al, a maximum of 0.5% Co, 0.001-<0.005% B, 0.005-<0.015% Mg, the remainder consisting of Fe and smelting-related impurities. 4: Alloy according to claim 1 , which if necessary contains (in wt %) V>0-1.0% claim 1 , especially 0.2-0.7%.5: Process for the manufacture of an alloy that has a composition according to claim 1 , whereina) the alloy is melted openly in continuous or ingot casting,b) to eliminate the segregations caused by the increased molybdenum content, a homogenizing annealing of the produced blooms/billets is performed at 1150-1250° C. for 15 to 25 h, whereinc) the homogenizing annealing is performed in particular following a first hot forming.6: Use of the alloy according to as a structural part in the oil and gas industry.7: Use according to claim 6 , wherein the structural parts exist in the production forms sheet claim 6 , strip claim 6 , pipe (longitudinally welded and seamless) claim 6 , bar or as forging. The invention relates to a titanium-free alloy with high pitting and crevice corrosion resistance as well as high offset yield strength and tensile strength in the cold-worked condition.The high-corrosion-resistant material Alloy 825 is used for critical applications in the chemical industry and in the offshore technology. It is marketed under the material number 2.4858 and has the following chemical composition: C≦0.025%, S≦0.015%, Cr 19.5-23.5%, Ni 28-46%, Mn≦1%, Si≦0.5%, Mo 2.5-3.5%, Ti 0.6-1.2%, Cu 1.5-3%, Al≦0.2%, Co≦1%, Fe the rest.For new applications in the oil and gas industry, the pitting and crevice corrosion resistance (problem 1) as well as the offset yield strength and tensile strength (problem 2 ...

Turbine component having a low residual stress ferromagnetic damping coating

A turbine component having a low residual stress ferromagnetic damping coating. The ferromagnetic damping coating may include a ferromagnetic damping material applied in powder form, which may be directed at a surface of the substrate at an application velocity so that it causes partial plastic deformation of the surface while adhering to the surface of the substrate to create a ferromagnetic damping coating. The ferromagnetic damping coating has a balanced coating residual stress, including a tensile quenching stress component and a compressive peening stress component. The resulting coated substrate exhibits a high damping capacity.

CONTROLLED THERMAL COEFFICIENT PRODUCT SYSTEM AND METHOD

A controlled thermal coefficient product manufacturing system and method is disclosed. The disclosed product relates to the manufacture of metallic material product (MMP) having a thermal expansion coefficient (TEC) in a predetermined range. The disclosed system and method provides for a first material deformation (FMD) of the MMP that comprises at least some of a first material phase (FMP) wherein the FMP comprises martensite randomly oriented and a first thermal expansion coefficient (FTC). In response to the FMD at least some of the FMP is oriented in at least one predetermined orientation. Subsequent to deformation, the MMP comprises a second thermal expansion coefficient (STC) that is within a predetermined range and wherein the thermal expansion of the MMP is in at least one predetermined direction. The MMP may be comprised of a second material phase (SMP) that may or may not transform to the FMP in response to the FMD. 1. A controlled thermal coefficient product manufacturing method comprising:(1) plastically deforming a metallic material; and(2) texturing said metallic material in at least one selected material direction in response to said plastic deforming;wherein: [{'sub': 100-A-B', 'A', 'B, '(1) a material characterized by a general formula FeMnX, wherein X is at least one of Ga, Ni, Co, Al, Ta, Si, or combinations thereof, and A is in a range from 0 to 50 atomic percent composition, and B is in a range from 0 to 50 atomic percent composition such that A plus B is less than 100;'}, {'sub': 100-A-B', 'A', 'B, '(2) a material characterized by a general formula FeNiX, wherein X is at least one of Ga, Mn, Co, Al, Ta, Si, or combinations thereof, and A is in a range from 0 to 50 atomic percent composition, and B is in a range from 0 to 50 atomic percent composition such that A plus B is less than 100;'}, {'sub': 100-A-B-C', 'A', 'B', 'C', 'D, '(3) a material characterized by a general formula FeNiCoAlX, wherein X is at least one of Ti, Ta, Nb, Cr, W or ...

WASTEGATE COMPONENT COMPRISING A NOVEL ALLOY

The present invention relates to a waste gate component for a turbo charger comprising an alloy comprising about 30 to about 42 wt.-% Ni, about 15 to about 28 wt.-% Cr, about 1 to about 5 wt.-% Cr, about 1 to about 4 wt.-% Ti, and at least about 20 wt.-% Fe, and to processes for preparing such a waste gate component. 2. Waste gate component according to claim 1 , wherein the alloy comprises Nb in an amount of 1 to 4 wt.-% Nb claim 1 , and/or Win an amount of 0.1 to 3 wt.-% claim 1 , and/or Mo in an amount of 0.5 to 4 wt.-% claim 1 , and C in the alloy is less than 0.1 wt.-%.3. Waste gate component according to claim 1 , wherein the alloy comprises between 1 and 10 wt.-% of one or more elements selected from Mn claim 1 , Al claim 1 , and Si.4. Waste gate component according to claim 3 , wherein the alloy comprises 0.5-4 wt.-% Mo claim 3 , 0.1 to 2 wt.-% Al claim 3 , and 0.1 to 3 wt.-% W.5. Waste gate component according to claim 1 , wherein the alloy comprises 0.5-4 wt.-% Mo claim 1 , 0.1 to 2 wt.-% Al claim 1 , 0.1 to 3 wt.-% Mn claim 1 , 0.1 to 3 wt.-% W claim 1 , 0.5 to 4 wt.-% Si claim 1 , and 1 to 4 wt.-% Nb.7. Waste gate component according to claim 1 , wherein the alloy comprises 1.0 to 3.0 wt.-% Mo claim 1 , 0.3 to 0.8 wt.-% Al claim 1 , 0.5 to 2.5 wt.-% Mn claim 1 , 0.5 to 2.5 wt.-% W claim 1 , 0.6 to 2.4 wt.-% Si claim 1 , and 1.7 to 2.5 wt.-% Nb.8. Waste gate component according to claim 1 , wherein the alloy comprises less than 0.1 wt.-% claim 1 , less than 0.05 wt.-% P claim 1 , less than 0.05 wt.-% S claim 1 , and less than 300 ppm claim 1 , by weight claim 1 , of N.9. Waste gate component according to claim 1 , wherein the alloy has been subjected to solution heat treatment claim 1 , precipitation hardening claim 1 , or both.10. Waste gate component according to claim 1 , wherein the alloy has an austenitic microstructure and comprises second phase particles or aggregates of said second phase particles claim 1 , wherein said particles have an average ...

STAINLESS STEEL FOIL AND METHOD OF PRODUCTION OF SAME

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

Hot press processing method and processing device

A hot press processing device 1 includes steps of: a heating step of heating a workpiece W; a press step of press-molding the workpiece W heated in the heating step; a cooling step of cooling a part of the workpiece W press-molded in the press step and causing it to undergo martensite transformation to form a hard zone Zh in the workpiece W, and cooling another part of the workpiece W and causing it to undergo ferrite/bainite transformation to form a soft zone Zs in the workpiece W. In the cooling step, the hot press processing device 1 cools a predetermined portion Zb in the soft zone Zs after increasing rigidity and hardness of the predetermined portion Zb.

Process For Producing A Catalyst

A process for producing a catalyst having a heating element that is formed from an electrically conductive metal alloy. In the production process, the catalyst undergoes at least a first heat treatment, during which the catalyst is at least partly heated in defined fashion and cooled in a defined fashion. The steps include heating at least a subregion of the catalyst to a predeterminable temperature of at least 550 degrees celsius, holding the temperature at a constant temperature level for at least two minutes, and cooling the at least one subregion of the catalyst at a temperature transient of at least 500 Kelvin per minute.

IMPACT AND WEAR RESISTANT COMPONENT, AND METHOD FOR PRODUCING THE SAME

A ripper shank as the impact and wear resistant component is made of a steel of a specific component composition which has a hardness of HRC 53 or more and HRC 57 or less. The steel includes a matrix including a martensite phase and a residual austenite phase, and first nonmetallic particles dispersed in the matrix and including at least one species selected from the group consisting of MnS, TiCN, and NbCN. The steel does not include a M23C6 carbide. 1. An impact and wear resistant component made of a steel containing not less than 0.41 mass % and not more than 0.44 mass % C , not less than 0.2 mass % and not more than 0.5 mass % Si , not less than 0.2 mass % and not more than 1.5 mass % Mn , not less than 0.0005 mass % and not more than 0.0050 mass % S , not less than 0.6 mass % and not more than 2.0 mass % Ni , not less than 0.7 mass % and not more than 1.5 mass % Cr , not less than 0.1 mass % and not more than 0.6 mass % Mo , not less than 0.02 mass % and not more than 0.03 mass % Nb , not less than 0.01 mass % and not more than 0.04 mass % Ti , not less than 0.0005 mass % and not more than 0.0030 mass % B , and not less than 20 mass ppm and not more than 60 mass ppm N , with the balance consisting of iron and unavoidable impurities , and having a hardness of HRC 53 or more and HRC 57 or less , a matrix including a martensite phase and a residual austenite phase, and', 'first nonmetallic particles dispersed in the matrix and including at least one species selected from the group consisting of MnS, TiCN, and NbCN,, 'the steel including'}{'sub': 23', '6, 'the steel not including a carbide represented as MC(where M represents the metallic elements constituting the steel).'}2. The impact and wear resistant component according to claim 1 , wherein the steel further contains at least one species selected from the group consisting of not less than 0.05 mass % and not more than 0.20 mass % V claim 1 , not less than 0.01 mass % and not more than 0.15 mass % Zr claim 1 , ...

DIE STEEL AND METHOD FOR PRODUCING SAME

A mold steel that is a steel having a composition containing, in terms of mass %: 0.07 to 0.15% of C; more than 0 and less than 0.8% of Si; more than 0 and not more than 1.0% of Mn; less than 0.05% of P; less than 0.02% of S; more than 0 and not more than 0.5% of Ni; more than 0 and less than 0.8% of Mo and W, either alone or as a complex (Mo+1/2W); more than 0 and less than 0.15% of V; and 0.25 to 1.5% of Cu, with the balance consisting of Fe, Cr and unavoidable impurities, wherein the content of Cr is more than 4.9% and not more than 5.3% and the hardness of the mold steel is 30 to 42 HRC. 2. The mold steel according to claim 1 , wherein a value of following Expression 1 satisfies not greater than 1.70 by mass % claim 1 , and a value of following Expression 2 satisfies not greater than 6.90 by mass %:{'br': None, '70×[C %]+6×[Si %]−[Cr %]−3×[(Mo+1/2W)%]−3×[V %]−0.5×[Cu %];and\u2003\u2003Expression 1'}{'br': None, '[Cr %]+3.3×[(Mo+1/2W)%],\u2003\u2003Expression 2'}where characters in brackets [ ] indicate a content of each element by mass %.3. The mold steel according to claim 1 , wherein Al claim 1 , N and O in the inevitable impurities are regulated claim 1 , respectively claim 1 , to less than 0.1% claim 1 , less than 0.06% and less than 0.0055% claim 1 , by mass %.4. A method for producing a mold steel claim 1 , comprising quenching the steel and tempering the steel at a temperature of not lower than 530° C. to regulate a hardness of the steel to 30 to 42 HRC claim 1 , the steel having a composition comprising claim 1 , by mass %:0.07% to 0.15% of C;more than 0% and less than 0.8% of Si;more than 0% to 1.0% of Mn;less than 0.05% of P;less than 0.02% of S;more than 0% to 0.5% of Ni;one or both of Mo and W, where an amount of (Mo+1/2W) is in a range of more than 0% and less than 0.8%;more than 0% and less than 0.15% of V;0.25% to 1.5% of Cu, andthe balance of Fe, Cr and inevitable impurities, wherein a Cr content is more than 4.9% and not more than 5.3%.5. The ...

MAGNET CORE FOR LOW-FREQUENCY APPLICATIONS AND METHOD FOR PRODUCING A MAGNET CORE FOR LOW-FREQUENCY APPLICATIONS

A magnet core for low-frequency applications and method for producing a magnet core for low-frequency applications is provided. The magnet core is made of a spiral-wound, soft-magnetic, nanocrystalline strip. The strip essentially has the alloy composition FeCoCuNbSiBC, wherein a, b, c, d, e and f are stated in atomic percent and 0≦a≦1; 0.7≦b≦1.4; 2.5≦c≦3.5; 14.5≦d≦16.5; 5.5≦e≦8 and 0≦f≦1, and cobalt may wholly or partially be replaced by nickel. The magnet core has a saturation magnetostriction λof λ<2 ppm, a starting permeability μof μ>100 000 and a maximum permeability μof μ>400 000. In addition, a sealing metal oxide coating is provided on the surfaces of the strip. 1. A method for producing a magnet core for low-frequency applications from a spiral-wound , soft-magnetic , nanocrystalline strip , the strip essentially having the alloy composition FeCoCuNbSiBC , wherein a , b , c , d , e and f are stated in atomic percent and 0≦a≦1; 0.7≦b≦1.4; 2.5≦c≦3.5; 14.5≦d≦16.5; 5.5≦e≦8 and 0≦f≦1 , and cobalt may wholly or partially be replaced by nickel , wherein the strip is provided with a coating with a metal oxide solution and/or an acetyl-acetone-chelate complex with a metal , which coating forms a sealing metal oxide coating during a subsequent heat treatment for the nanocrystallisation of the strip , and wherein , in the heat treatment for the nanocrystallisation of the strip , a saturation magnetostriction λof |λ|<2 ppm is set.2. The method according to claim 1 , wherein an element selected from the group of Mg claim 1 , Zr claim 1 , Be claim 1 , Al claim 1 , Ti claim 1 , V claim 1 , Nb claim 1 , Ta claim 1 , Ce claim 1 , Nd claim 1 , Gd claim 1 , further elements of the 2and 3main groups and of the group of rare earth metals is used as a metal for the coating.3. The method according to claim 1 , wherein a saturation magnetostriction λof |λ|<1 ppm claim 1 , preferably |λ|<0.5 ppm claim 1 , is set in the heat treatment process.4. The method according to claim 1 , ...

RAILWAY WHEEL

The chemical composition of the railway wheel of the present embodiment consists of: in mass %, C: 0.80 to 1.60%, Si: 1.00% or less, Mn: 0.10 to 1.25%, P: 0.050% or less, S: 0.030% or less, Al: 0.010 to 0.650%, and N: 0.0030 to 0.0200%, with the balance being Fe and impurities, and wherein, in a microstructure of the web part of the railway wheel, an area fraction of pearlite is 85.0% or more, an area fraction of pro-eutectoid cementite is 0.90 to 15.00%, and an average value of a width W of the pro-eutectoid cementite defined by Formula (1) is less than 0.70 μm: 1. A railway wheel , comprising:a rim part,a hub part, anda web part which is disposed between the rim part and the hub part and is linked to the rim part and the hub part, whereina chemical composition of the railway wheel consists of: in mass %,C: 0.80 to 1.60%,Si: 1.00% or less,Mn: 0.10 to 1.25%,P: 0.050% or less,S: 0.030% or less,Al: 0.010 to 0.650%,N: 0.0030 to 0.0200%,Cr: 0 to 0.60%, andV: 0 to 0.12%, withthe balance being Fe and impurities, and wherein {'br': None, 'i': W=', 'P/', 'P/', 'A, 'sup': 2', '1/2, '½×(2−((2)−4))\u2003\u2003(1)'}, 'in a microstructure of the web part of the railway wheel, an area fraction of pearlite is 85.0% or more, an area fraction of pro-eutectoid cementite is 0.90 to 15.00%, and an average value of a width W of the pro-eutectoid cementite defined by Formula (1) is 0.95 μm or less{'sup': '2', 'where, A in Formula (1) is an area (μm) of the pro-eutectoid cementite, and P is a circumference length (μm) of the pro-eutectoid cementite.'}2. The railway wheel according to claim 1 , whereinin a microstructure of the hub part of the railway wheel, an area fraction of pearlite is 85.0% or more, an area fraction of the pro-eutectoid cementite is 0.90 to 15.00%, and an average value of a width W of the pro-eutectoid cementite defined by Formula (1) is 0.95 μm or less.3. A railway wheel comprising:a rim part,a hub part, anda web part which is disposed between the rim part and the ...

Method for Fabricating a Tow Hook Assembly

A method for manufacturing a tow hook assembly begins with heating a first steel blank to within a range of 2200° F. and 2300° F. to create a first heated steel blank. A second steel blank is heated to within the range of 2200° F. at 2300° F. to create a second heated steel blank. The first heated steel blank is forged into a tow hook. The second heated steel blank is forged into a flange plate. The tow hook in the flange plate are welded together to form the tow hook assembly. This method reduces waste by minimizing the size of the first and second steel blanks.

Wear Part with Hardfacing and Method of Making Same

A wear part includes a body and a cladding layer. The body includes an outer surface. The body is made from a base material. The cladding layer is connected to the outer surface of the body. The cladding layer is constructed with the body via additive manufacturing. The cladding layer is made from a surfacing material which is harder than the base material.

SOFT MAGNETIC METAL POWDER, METHOD FOR PREPARING THE SAME, AND ELECTRONIC COMPONENTS INCLUDING THE SAME AS CORE MATERIAL

Disclosed herein are a soft magnetic metal powder having a pearlite lamellar structure in which ferrite structures and cementite structures are repeated, a method for preparing the same, and an electronic component including the same as a core material. 1. A soft magnetic metal powder having a pearlite lamellar structure in which ferrite structures and cementite structures are repeated.2. The soft magnetic metal powder according to claim 1 , wherein the ferrite structure is made of α-Fe.3. The soft magnetic metal powder according to claim 1 , wherein the cementite structure is made of FeC.4. The soft magnetic metal powder according to claim 1 , wherein a particle size of the soft magnetic metal powder is 1 to 100 μm.5. The soft magnetic metal powder according to claim 1 , wherein the ferrite structure and the cementite structure are controlled by a carbon content.6. The soft magnetic metal powder according to claim 5 , wherein the carbon content is 2 wt % or less based on a content of an α-Fe powder forming the ferrite structure.7. The soft magnetic metal powder according to claim 1 , wherein it is usable at a high frequency of 0.1 to 30 MHz.8. A method for preparing a soft magnetic metal powder having a pearlite lamellar structure in which ferrite structures and cementite structures are repeated claim 1 , the method comprising:infiltrating carbon into an α-Fe powder; andheat-treating the α-Fe powder having the carbon infiltrated thereinto.9. The method according to claim 8 , wherein the carbon is infiltrated in a content of 2 wt % or less based on a content of the α-Fe powder.10. The method according to claim 8 , wherein the heat-treating is performed at 740 to 800.11. The method according to claim 8 , wherein the ferrite structure is made of α-Fe.12. The method according to claim 8 , wherein the cementite structure is made of FeC formed by combining the α-Fe powder and the carbon with each other.13. An electronic component comprising the soft magnetic metal powder ...

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 ...

Cold work tool steel

The invention relates cold work tool steel. The steel includes the following main components (in wt. %): C 2.2-2.4, Si 0.1-0.55, Mn 0.2-0.8, Cr 4.1-5.1, Mo 3.1-4.5, V 7.2-8.5, balance optional elements, iron and impurities.

METHOD FOR PRODUCING A MOTOR VEHICLE COMPONENT, AND A BODY COMPONENT

A method for producing a structural and/or safety-related motor vehicle component having at least one hot-formed and press-hardened part constructed from high-strength steel includes the steps of partially heat-treating a region of the motor vehicle component by heating the region to a heat-up temperature in a temperature range between 500° C. and 900° C.; maintaining the heat-up temperature for a duration of a holding time; and cooling down from the heat-up temperature in one or more phases. A body component constructed as a structural and/or safety-related motor vehicle component from a steel sheet blank that has been hot-formed and press-hardened includes joining flanges and/or coupling locations and/or safety-related parts, wherein the joining flanges, coupling locations and/or safety-related parts are partially heat-treated in several steps with the disclosed method.

HARDFACING PROCESS AND PARTS PRODUCED THEREBY

A hardfacing process includes depositing a clad layer having a thickness greater than about 1 mm (0.04 in) on a surface of the component by arc welding, and creating a heat affected zone directly below the clad layer due to the depositing. The heat affected zone may be a region of the component where a lowest hardness is more than 40% lower than a base hardness of the component below the heat affected zone. The method may also include heat treating the component after the deposition such that the lowest hardness in the heat affected zone is restored to within about 15% of the base hardness of the component.

OBJECT-PROCESSING METHOD AND DEVICE

An object-processing method applies a specific process to an object to be processed by connecting a power source to the object to be processed. 1. An object-processing method , comprising:applying a specific process to an object to be processed by connecting a power source to the object to be processed.2. The object-processing method according to claim 1 , wherein the specific process is a cooling process on the object to be processed.3. The object-processing method according to claim 1 , wherein the specific process is a transformation-limiting process on a structure of the object to be processed.4. The object-processing method according to claim 1 , wherein the power source causes free electrons in the object to be processed to be emitted to outside by being connected to the object to be processed.5. The object-processing method according to claim 4 , wherein the power source collects the free electrons emitted to outside from the object to be processed.6. The object-processing method according to claim 4 , wherein at the time the power source is connected to the object to be processed claim 4 , no other power source that supplies an electric current to the object to be processed is connected to the object to be processed.7. The object-processing method according to claim 1 , wherein the object to be processed is a metal body that generates heat by forging claim 1 , andthe specific process is applied to the metal body heated before forging, the metal body generating heat during forging, or the metal body that has generated heat by forging.8. An object-processing device claim 1 , comprising:a power source; andan electrode that is connected to the power source and comes into contact with an object to be processed.9. The object-processing device according to claim 8 , wherein the power source is configured to cause free electrons in the object to be processed to be emitted to outside by being connected to the object to be processed through the electrode.10. The ...

ALUMINUM CYLINDER BLOCK AND METHOD OF MANUFACTURE

A cast cylinder block for an internal combustion engine includes a first and a second cylinder bore and a shared bore wall. The first cylinder bore includes a first bore wall and the second cylinder bore includes a second bore wall. The shared cylinder bore wall includes a first portion and a second portion. A portion of the first bore wall combines with a portion of the second bore wall to form the shared cylinder bore wall. The first portion of the shared bore wall is an as-cast portion. The second portion of the shared bore wall is a metal matrix composite. 1. A cast cylinder block for an internal combustion engine , the cylinder block comprising:a first cylinder bore and a second cylinder bore, and wherein the first cylinder bore includes a first bore wall, the second cylinder bore includes a second bore wall, the first bore wall includes a first portion that is adjacent to the second cylinder bore, and the second bore wall includes a second portion that is adjacent to the first cylinder bore, anda shared cylinder bore wall comprising the first portion of the first bore wall and the second portion of the second bore wall, and wherein the shared cylinder bore wall further includes a third portion and a fourth portion.2. The cast cylinder block of wherein the third portion of the shared cylinder bore wall is an as-cast parent metal portion and the second portion of the shared cylinder bore wall is a metal matrix composite portion.3. The cast cylinder block of wherein the cylinder block and the as-cast parent metal portion are a cast aluminum alloy.4. The cast cylinder block of wherein the metal matrix composite portion includes at least one of an intermetallic powder claim 2 , an oxide claim 2 , a carbide claim 2 , and a nitride.5. The cast cylinder block of wherein the metal matrix composite portion further comprises at least one retainer and the at least one retainer is partially disposed in the metal matrix composite portion claim 4 , partially disposed in the ...

METHOD OF REMANUFACTURING A ROCKER ARM

A method of remanufacturing a rocker arm is provided. The rocker arm includes a body defining a center hole for receipt of a shaft, a first arm extending radially away from the center hole, and a second arm extending radially away from the center hole in a direction opposite the first arm. The second arm is configured to be operatively engaged with a valve mechanism and includes a contact surface configured to engage with a braking member. The contact surface includes a worn upper hardened surface. The method includes machining the contact surface to a depth less than a predefined tolerance limit to remove the worn upper hardened surface and create a generally planar unhardened contact surface. The method further includes hardening the unhardened contact surface using a laser to create a repaired contact surface with a surface hardness of greater than at least Rockwell C 50. 1machining the contact surface to a depth less than a predefined tolerance limit to remove the worn upper hardened surface and create a generally planar unhardened contact surface; andhardening the unhardened contact surface using a laser to create a repaired contact surface with a surface hardness of greater than at least Rockwell C 50.) A method of remanufacturing a rocker arm, the rocker arm including a body defining a center hole for receipt of a shaft, a first arm extending radially away from the center hole for engaging a camshaft, and a second arm extending radially away from the center hole in a direction opposite the first arm, the second arm configured to be operatively engaged with a valve mechanism and having a contact surface configured to engage with a braking member, the contact surface having a worn upper hardened surface, the method comprising: The present disclosure relates to a method of remanufacturing a rocker arm.Rocker arms are typically used in an engine to actuate various valve train components, such as intake and exhaust valves. During normal operation of the engine, ...

HIGH STRENGTH NODULAR CAST IRON POLE AND PREPARATION TECHNOLOGY THEREOF

The invention discloses a high strength nodular cast iron pole and a preparation technology thereof. The preparation technology is characterized by comprising the following steps: (1) preparation before pole casting, to be specific, preparation of raw materials, smelting of iron, adding of alloying elements and nodulizing; (2) a pole casting procedure, to be specific, casting and inoculation treatment; and (3) heat treatment. The invention also provides the high strength nodular cast iron pole prepared by adopting the preparation technology, comprising multiple tower poles which are sequentially connected in an inserted manner, wherein each tower pole is a cone-frustum hollow column which has the conicity of 1000: 11-26; the top end of the high strength nodular cast iron pole is equipped with a tower cap. The high strength nodular cast iron pole has the advantages of high bearing capacity, thin wall thickness, light weight, low manufacturing cost and the like. 1. A preparation technology of a high strength nodular cast iron pole , characterized by comprising the following steps:{circle around (1)} preparation before pole casting, including preparation of raw materials, iron smelting, adding of alloying elements and nodulizing process;A1: preparation of raw materials is the adopted raw materials include 90-95 wt % of foundry pig iron or blast-furnace molten iron and 5-10 wt % of steel scrap;A2: iron smelting, including weighing raw materials according to above-mentioned percentage by mass, sequentially adding the raw materials into a medium frequency furnace, starting a power source and raising temperature of the furnace to 1470-1500° C. to melt the raw materials;A3: adding of the alloying elements, to be specific, is adding Cu, Mo, Ni and V according to the performances of the product, and then the mass percentages of various elements in the molten iron are:C: 3.4-3.8%, Si: 1.2-2.6%, Mn: 0.3-0.5%, Cu: 0.15-0.5%, Mo: 0.3-1.0%, Ni: 1-2%, V: 0.3-0.5%, P≦0.06%, S≦0.025 ...

Friction plate provided with core plate and manufacturing method therefor

A method for manufacturing a friction plate provided with a core plate includes subjecting a spline portion formed at an outer periphery or an inner periphery of the core plate to a hardening process by laser.

METHOD OF MANUFACTURING A PIN FOR A MOLD FOR A DIE CASTING PROCESS

A method of manufacturing a pin () for a o mold () includes forming the pin () to include a substantially uniform initial hardness throughout the entire structure of the formed pin (). The formed pin () is then processed with a hardening process, such that the processed pin() exhibits a hardness defining a hardness gradient that gradually increases from the initial hardness at a central interior region () of the pin () to an increased surface hardness at an exterior surface () of the pin (). After processing the pin () with the hardening process, a coating () maybe deposited onto the exterior surface () of the pin () with a physical vapor deposition process. The coating () exhibits a hardness that is greater than the hardness of the increased surface hardness of the exterior surface () of the pin (). The pin () may include, for example, a core pin, a squeeze pin, or an ejector pin. 1. A method of manufacturing a pin for a mold for a die casting process , the method comprising:forming the pin from a metal material to define a desired shape, such that the pin includes a substantially uniform initial hardness throughout the entire structure of the formed pin; andprocessing the formed pin with a hardening process such that the processed pin exhibits a hardness that gradually increases from the initial hardness at a central interior region of the pin to an increased surface hardness at an exterior surface of the pin.2. The method set forth in further comprising depositing a coating onto the exterior surface of the pin with a physical vapor deposition process claim 1 , wherein the coating exhibits a hardness that is greater than the hardness of the increased surface hardness of the exterior surface of the pin.3. The method set forth in wherein the coating is a ceramic coating.4. The method set forth in wherein the coating exhibits a hardness greater than HRC80 as defined by the Rockwell hardness test.5. The method set forth in wherein the initial hardness of the pin is ...

IRON-BASED COMPOSITION FOR FUEL ELEMENT

Disclosed embodiments include fuel assemblies, fuel element, cladding material, methods of making a fuel element, and methods of using same.

METHOD OF TRACK LINK MANUFACTURE

A method of fabricating a track link comprises creating a rail portion of a track link from a high alloy steel, creating a main body portion of a track link from a low alloy steel, and friction adhering the rail portion onto the main body portion. 1. A track link for use with a track chain of a vehicle that includes a plurality of track pins and bushings , the track link comprising:a main body portion that defines a plurality of apertures for receiving a track pin or bushing, the main body portion comprising a low alloy steel; anda rail portion that that comprises a high alloy steel.2. The track link of wherein the rail portion is attached to the main body portion using linear friction adhesion.3. The track link of wherein the hardness of the rail portion of the track link is RCW C50-55.4. The track link of wherein the hardness of the main body portion is RCW C33-37.5. The track link of wherein the rail portion defines a consistent rail thickness.6. The track link of wherein the minimum distance from the rail portion to any aperture of the main body portion is 4-8 mm.7. The track link of wherein the rail thickness ranges from 4 to 20 mm.8. A track chain assembly for use with a vehicle that includes an endless track drive claim 5 , the track chain comprising:a plurality of track pins and track bushings disposed about the track pins; anda plurality of track links that are connected to each other by either a track pin or a track bushing, wherein at least one track link comprises a main body portion that defines a plurality of apertures for receiving a track pin or bushing, the main body portion comprising a low alloy steel, and a rail portion that that comprises a high alloy steel.9. The track chain of wherein the rail portion is attached to the main body portion using linear friction adhesion.10. The track chain of wherein the hardness of the rail portion of the track link is RCW C50-55.11. The track chain of wherein the hardness of the main body portion is RCW C33-37 ...

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.

AUSTENITIC STAINLESS STEEL AND METHOD FOR PRODUCING THE SAME

There is provided an austenitic stainless steel having a high strength and an excellent hydrogen brittleness resistance and further having an excellent machinability. The austenitic stainless steel of the present embodiment has a chemical composition including: in mass %, C: 0.10% or less; Si: 1.0% or less; Mn: 2.1 to 6.0%; P: 0.045% or less; S: 0.1% or less; Ni: 8.0 to 16.0%; Cr: 15.0 to 30.0%; Mo: 1.0 to 5.0%; N: 0.05 to 0.45%; Nb: 0 to 0.50%; and V: 0 to 0.50%, with the balance being Fe and impurities, and satisfying Formula (1). The austenitic stainless steel of the present embodiment has a grain size number of less than 8.0 and a tensile strength of 690 MPa or more. 16-. (canceled)7. An austenitic stainless steel comprising a chemical composition consisting of , in mass %:C: 0.10% or less;Si: 1.0% or less;Mn: 2.1 to 6.0%;P: 0.045% or less;S: 0.1% or less;Ni: 8.0 to 16.0%;Cr: 15.0 to 30.0%;Mo: 1.0 to 5.0%;N: 0.05 to 0.45%;Nb: 0 to 0.50%; andV: 0 to 0.50%,with the balance being Fe and impurities, andsatisfying Formula (1), {'br': None, '15≦12.6C+1.05 Mn+Ni+15N \u2003\u2003(1)'}, 'the austenitic stainless steel having a grain size number of less than 8.0 and a tensile strength of 690 MPa or morewhere symbols of elements in Formula (1) are to be substituted by contents of the corresponding elements (in mass %).8. The austenitic stainless steel according to claim 7 , comprising one or more elements selected from the group consisting ofNb: 0.01 to 0.50% andV: 0.01 to 0.50%.9. The austenitic stainless steel according to claim 7 , wherein the grain size number is 3.0 or more.10. The austenitic stainless steel according to claim 8 , wherein the grain size number is 3.0 or more.11. The austenitic stainless steel according to claim 7 , wherein a mixed grain ratio of a crystal grain micro-structure is 20% or less.12. The austenitic stainless steel according to claim 8 , wherein a mixed grain ratio of a crystal grain micro-structure is 20% or less.13. The austenitic ...

GAS TURBINE ENGINE AIRFOIL IMPINGEMENT COOLING

A method of manufacturing an airfoil includes the steps of depositing multiple layers of powdered metal onto one another. The layers are joined to one another with reference to CAD data relating to a particular cross-section of an airfoil. The airfoil is produced with leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface. An exterior wall provides the exterior airfoil surface at the leading edge. An impingement wall is integrally formed with the exterior wall to provide an impingement cavity between the exterior wall and the impingement wall. Multiple impingement holes are provided in the impingement wall. The impingement holes are spaced laterally across the impingement wall. 1. A method of manufacturing an airfoil comprising the steps of:depositing multiple layers of powdered metal onto one another;joining the layers to one another with reference to CAD data relating to a particular cross-section of an airfoil; andproducing the airfoil with leading and trailing edges joined by spaced apart pressure and suction sides to provide an exterior airfoil surface, an exterior wall providing the exterior airfoil surface at the leading edge, an impingement wall integrally formed with the exterior wall to provide an impingement cavity between the exterior wall and the impingement wall, and multiple impingement holes provided in the impingement wall, the impingement holes spaced laterally across the impingement wall.2. The method according to claim 1 , comprising the step processing the airfoil to provide desired structural characteristics.3. The method according to claim 2 , wherein the processing step includes heating the airfoil to reconfigure the joined layers into a single claim 2 , crystalline structure.4. The method according to claim 1 , wherein the impingement wall includes a surface from which a first leg extends outward claim 1 , a second leg adjoins the first leg at an angle to provide a scoop arranged ...

HOLLOW ELEMENT MANUFACTURING METHOD AND ROTARY MACHINE MANUFACTURING METHOD

A method of manufacturing a hollow element which has an internal space and of which the internal space is cryogenically used, the method comprising a base material forming step of forming a base material which has a space to serve as the internal space; a filling step of filling the internal space of the formed base material with fluid having a temperature equal to or lower than a temperature at which the base material is subjected to solid-phase transformation and causing the base material to be subjected to the solid-phase transformation; and a finishing step of finishing the base material after the base material is subjected to phase transformation. 1. A method of manufacturing a hollow element which has an internal space and of which the internal space is cryogenically used , the method comprising:a base material forming step of forming a base material which has a space to serve as the internal space;a filling step of filling the internal space of the formed base material with fluid having a temperature equal to or lower than a temperature at which the base material is subjected to solid-phase transformation and causing the base material to be subjected to the solid-phase transformation; anda finishing step of finishing the base material after the base material is subjected to phase transformation.2. The method of manufacturing a hollow element according to claim 1 ,wherein the hollow element is assembled with a plurality of members, a temporary assembling step of temporarily assembling each of the base materials respectively corresponding to the plurality of members which are formed through the base material forming step, and', 'wherein the filling step is carried out with respect to the temporarily assembled base material., 'wherein the method further comprises3. The method of manufacturing a hollow element according to claim 1 ,wherein in the filling step, a core is disposed in the internal space in a state of being separated from a surface defining the ...

PRESSING TOOL AND METHOD FOR MANUFACTURING A PRESSING TOOL

A method for manufacturing a pressing tool includes shaping a blank, which is able to be hardened, at least in part, to a final size of a pressing jaw. Then, a laser beam is applied to at least one selected region of a surface of the pressing jaw so as to form at least one hardened surface layer. 1. A method for manufacturing a pressing tool , comprising:i) shaping a blank, which is able to be hardened, at least in part, to a final size of a pressing jaw; and thenii) applying a laser beam to at least one selected region of a surface of the pressing jaw so as to form at least one hardened surface layer.2. The method according to claim 1 , wherein the pressing jaw comprises or consists of a metal alloy.3. The method according to claim 2 , wherein the metal alloy is highly tempered steel.4. The method according to claim 1 , wherein the at least one hardened surface layer has a thickness of approximately 0.2 to approximately 1.5 mm.5. The method according to claim 4 , wherein the thickness is 0.5 mm to 1.2 mm.6. The method according to claim 1 , wherein the pressing jaw has a die and at least one end face configured to form a sealing joint claim 1 , the at least one selected region being positioned in a transition from the die to the at least one end face.7. The method according to claim 6 , wherein the at least one selected region is positioned adjacent to at least one edge or at a distance from at least one adjacent edge in the transition from the die to the end face.8. The method according to claim 6 , wherein only a portion or portions at a smallest distance from a central axis of the die is/are lased in the transition from the die to the end face.9. The method according to claim 1 , wherein the pressing jaw comprises at least one contact face having at least one contact surface configured to be brought into operative contact with a running or sliding element claim 1 , the at least one selected region being positioned on the at least one contact surface.10. The ...

IRON-BASED ALLOYS AND METHODS OF MAKING AND USE THEREOF

An iron-based alloy includes, in weight percent, carbon from about 2 to about 3 percent; manganese from about 0.1 to about 0.4 percent; silicon from about 0.3 to about 0.8 percent; chromium from about 11.5 to about 14.5 percent; nickel from about 0.05 to about 0.6 percent; vanadium from about 0.8 to about 2.2 percent; molybdenum from about 4 to about 7 percent; tungsten from about 3 to about 5 percent; niobium from about 1 to about 3 percent; cobalt from about 3 to about 5 percent; boron from zero to about 0.2 percent; and the balance containing iron and incidental impurities. The alloy is suitable for use in elevated temperature applications such as in valve seat inserts for combustion engines. 1. An iron-based alloy comprising , in weight percent:carbon from about 2 to about 3 percent;manganese from about 0.1 to about 0.4 percent;silicon from about 0.3 to about 0.8 percent;chromium from about 11.5 to about 14.5 percent;nickel from about 0.05 to about 0.6 percent;vanadium from about 0.8 to about 2.2 percent;molybdenum from about 4 to about 7 percent;tungsten from about 3 to about 5 percent;niobium from about 1 to about 3 percent;cobalt from about 3 to about 5 percent;boron from zero to about 0.2 percent; andbalance iron and incidental impurities.2. The alloy according to claim 1 , wherein the carbon content of the alloy is from about 2.4 to about 2.7 weight percent.3. The alloy according to claim 1 , wherein the alloy contains at least about 0.08 weight percent boron.4. The alloy according to claim 1 , wherein the alloy contains at least about 2.4 weight percent carbon and at least about 0.08 weight percent boron.5. The alloy according to claim 1 , wherein the cobalt content of the alloy is from about 3.5 to about 4 weight percent.6. The alloy according to claim 1 , wherein the alloy comprises intradendritic regions containing tempered martensite and interdendritic regions comprising eutectic reaction phases.7. The alloy according to claim 1 , wherein the alloy is ...

Heat treatment method and heat treatment device

The invention relates to a method and to a device for the heat treatment of a steel component directed specifically at individual zones of the component. In one or more first regions of the steel component a primarily austenitic structure can be set, from which, by quenching, a predominantly martensitic structure can be produced, and in one or more second regions of the steel component there is a predominantly ferritic-pearlitic structure. The steel component is first of all heated in a first furnace to a temperature below the Ac3 temperature, and the steel component is then transferred into a handling station. During the transfer the steel component can cool, and in the handling station, one or more second regions of the steel component are cooled within a residence time t150 to a final cooling temperature ϑS, and is then transferred to a second furnace, in which heat is delivered to the steel component. The temperature of the one or more second regions increases again during the residence time t130 to a temperature below the Ac3 temperature, whilst the temperature of the one or more first regions is heated in the same residence time t130 to a temperature above the Ac3 temperature.

CAST STEEL PROJECTION MATERIAL

A cast steel shot media for performing a blasting treatment, including, at a weight ratio, 0.8% or more and 1.2% or less of C, 0.35% or more and 1.2% or less of Mn, and 0.4% or more and 1.5% or less of Si, in which a remainder has a hyper-eutectoid composition including Fe and inevitable impurities, and the cast steel shot media has a structure having a fine pearlite structure as a main constituent. 1. A cast steel shot media for performing a blasting treatment , comprising , at a weight ratio0.8% or more and 1.2% or less of C,0.35% or more and 1.2% or less of Mn, and0.4% or more and 1.5% or less of Si,wherein a remainder has a hyper-eutectoid composition including Fe and inevitable impurities, andthe cast steel shot media has a structure having a fine pearlite structure as a main constituent.2. The cast steel shot media according to claim 1 , further comprising 0.05% or less of P and 0.05% or less of S at a weight ratio as the inevitable impurities.3. The cast steel shot media according to claim 1 , further comprising a mixed structure of a fine pearlite structure and pro-eutectoid cementite.4. The cast steel shot media according to claim 1 , wherein Rockwell hardness is HRC 35 or more and HRC 50 or less.5. The cast steel shot media according to claim 1 , wherein the cast steel shot media is formed in a substantially spherical shape having an average particle diameter of 0.3 mm or more and 3.5 mm or less.6. The cast steel shot media according to claim 1 , wherein the cast steel shot media is used for grinding of a casting.7. The cast steel shot media according to claim 1 , wherein a passive film is formed on the surface.8. The cast steel shot media according to claim 1 , wherein a weight ratio of C is 0.8% or more and 1.1% or less.9. The cast steel shot media according to claim 1 , wherein a weight ratio of Mn is 0.6% or more and 1.1% or less.10. The cast steel shot media according to claim 1 , wherein a weight ratio of Si is 0.6% or more and 1.0% or less.11. The ...

Stator Magnetic Core Brushless Motor Apparatus, System and Methods

A stator magnetic core and manufacturing process thereof and brushless motor comprising the stator magnetic core, wherein the stator magnetic core is made of iron-based amorphous material containing Co and V, and the composition of the iron-based amorphous material by weight percentage is: Co 0.8-1.4%, V 0.6-1.2%, B 2.7-3.3%, Si 6.5-8%, and Fe for the rest. A brushless DC motor, comprising a rotor spindle, a front end cover, a housing, a stator magnetic core and a rear end cover, wherein the stator magnetic core is assembled inside the housing, a stator coil is disposed inside the stator magnetic core, and the stator magnetic core and the stator core don't contact each other and an insulating layer is formed between them. The stator magnetic core in the present invention is made of iron-based amorphous material containing Co and V. Through addition of Co and V elements, the stator magnetic core refines crystalline grain and raises material toughness. It not only overcomes the previous problem of difficult machining and shaping but also raises the efficiency of the brushless DC motor containing this stator magnetic core. It is a breakthrough process. 1. A stator magnetic core , comprising: an iron-based amorphous material comprising Co and V , wherein the composition of the iron-based amorphous material by weight percentage is Co 0.8-1.4% , V 0.6-1.2% , B 2.7-3.3% , Si 6.5-8% , and Fe for the rest.2. The stator magnetic core of claim 1 , wherein the iron-based amorphous material by weight percentage is about Co 1% claim 1 , V 0.8% claim 1 , B 3.2% claim 1 , Si 7.5% claim 1 , and Fe 87.5%.3. A manufacturing process of the stator magnetic core of claim 1 , wherein a vacuum heat treatment process of the stator magnetic core comprises steps for: raising a first temperature to 310° C.; holding the first temperature for 20-25 min at first; raising the first temperature to a second temperature at 345° C.; holding the second temperature for about 15-20 min; raising the ...

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 ...

Plating Process to Increase Coin Blank Surface Hardness

A method is for plating metal or alloy blanks. The method includes heating the metal or alloy blanks at a recrystallization temperature sufficient to soften the steel for minting; plating the softened metal or alloy blanks with one or more layers of metal or alloy; and heating the plated blanks at a temperature sufficient to reduce plating stresses but below the recrystallization temperature of the outermost plating layer. 2. The method according to claim 1 , wherein the metal or alloy blanks are steel.3. The method according to claim 1 , wherein the metal or alloy blanks are 60Cu/40Zn alloys claim 1 , 70Cu/30Zn alloys claim 1 , 80Cu/20Zn alloys claim 1 , Cu/Zn/Sn alloys claim 1 , white bronze claim 1 , or cupro-nickel blanks.4. The method according to claim 2 , wherein the blanks are steel blanks and are heated at a recrystallization temperature between about 725° C. and about 950° C.5. The method according to claim 2 , wherein the blanks are copper blanks and are heated at a recrystallization temperature between about 625° C. and about 675° C.6. The method according to claim 2 , wherein the blanks are brass blanks and are heated at a recrystallization temperature between about 650° C. and about 700° C.7. The method according to claim 2 , wherein the blanks are aluminum/bronze blanks and are heated at a recrystallization temperature between about 700° C. and about 750° C.8. The method according to claim 2 , wherein the blanks are steel blanks and are heated for about 1 hour.9. The method according to claim 1 , wherein the plated blanks are heated to reduce plating stresses at a temperature above 400° C. and below 500° C.10. The method according to claim 1 , wherein the plated blanks are heated to reduce plating stresses for about 1 hour.11. The method according to claim 1 , wherein the plated blanks are heated from room temperature to the temperature sufficient to reduce plating stresses and cooled back down to room temperature over the course of about 1.5 to about ...

Press-formed article and method for manufacturing same

A method for manufacturing a press-formed article, said method comprising forming a galvanized steel sheet or an alloyed hot-dip galvanized steel sheet by hot press forming, wherein, after heating the steel sheet and holding the same, the forming is started at a temperature of 680-750° C. inclusive, while allowing liquid zinc to remain on the surface of the steel sheet, and the forming is performed while regulating the strain rate in a plastic deformation part of the steel sheet to 0.5 sec −1 or lower.

INTEGRALLY CAST EXCAVATOR BUCKET AND MANUFACTURING METHOD THEREOF

The present invention provides an integrally cast excavator bucket and a manufacturing method thereof. The integrally cast excavator bucket comprises a lifting lug, a top plate, two side plates and a bottom plate connected with the two side plates. A method for manufacturing the integrally cast excavator bucket by adopting the cast steel comprises the following steps: putting cast steel components into a melting furnace, and carrying out modification treatment before furnace after melting is finished; manufacturing models and a template, coating, heating, vacuumizing, placing sandboxes, adding sand, molding, carrying out mold closing, casting, quenching, tempering and cooling to room temperature to finish casting of the excavator bucket. The integrally cast excavator bucket is formed by once casting from a low-alloy steel material by adopting a vacuum sealing technology, and is high in product strength, resistant to wear and corrosion, high in impact resistance and long in service life. 11343134. An integrally cast excavator bucket , comprising a lifting lug () , a top plate , two side plates () and a bottom plate () connected with the two side plates () , wherein the lifting lug () , the top plate , the two side plates () and the bottom plate () are of an integral structure.2. The integrally cast excavator bucket according to claim 1 , wherein claim 1 ,{'b': 8', '3', '2', '1, 'a side toothed plate () is provided on the side plate (), and a lifting lug reinforcing rib () is provided at a position where the lifting lug () is connected with the top plate.'}3. The integrally cast excavator bucket according to claim 1 , wherein claim 1 ,{'b': 5', '6', '7', '3', '5', '3', '4', '9', '3', '4', '10', '4, 'a plurality of wear-resistant blocks () and wear-resistant spheres () are provided in an area, close to a front edge () of the bucket, of the side plate (), and the wear-resistant blocks () are close to a position where the side plate () is connected with the bottom plate ...

METHOD FOR PRODUCING FE-BASED NANOCRYSTALLINE ALLOY RIBBON, METHOD FOR PRODUCING MAGNETIC CORE, FE-BASED NANOCRYSTALLINE ALLOY RIBBON, AND MAGNETIC CORE

A method for producing an Fe-based nanocrystalline alloy ribbon, the method including a step of supplying a molten Fe-based alloy onto a rotating chill roll, and rapidly solidifying the molten Fe-based alloy that has been supplied onto the chill roll, thereby obtaining an Fe-based amorphous alloy ribbon having a free solidified surface and a roll contact surface, and a step of heat-treating the Fe-based amorphous alloy ribbon, thereby obtaining an Fe-based nanocrystalline alloy ribbon; wherein an outer peripheral part of the chill roll is composed of a Cu alloy, and a thermal conductivity of the outer peripheral part is from 70 W/(m·K) to 225 W/(m·K). 111-. (canceled)12. A method for producing an Fe-based nanocrystalline alloy ribbon , the method comprising:supplying a molten Fe-based alloy onto a rotating chill roll, and rapidly solidifying the molten Fe-based alloy that has been supplied onto the chill roll, thereby obtaining an Fe-based amorphous alloy ribbon having a free solidified surface and a roll contact surface, and having a width of from 5 mm to 65 mm and a thickness of from 10 μm to 15 μm; andheat-treating the Fe-based amorphous alloy ribbon, thereby obtaining an Fe-based nanocrystalline alloy ribbon,wherein an outer peripheral part of the chill roll is composed of a Cu alloy, and a thermal conductivity of the outer peripheral part is in a range of from 110 W/(m·K) to 225 W/(m·K), and a Vickers hardness of the outer peripheral part is in a range of from 250 HV to 400 HV.13. The method for producing an Fe-based nanocrystalline alloy ribbon according to claim 12 , wherein the molten Fe-based alloy has an alloy composition represented by the following Composition Formula (A):{'br': None, 'sub': 100−a−b−c−d−e', 'a', 'b', 'c', 'd', 'e, 'FeCuSiBNbC\u2003\u2003Composition Formula (A)wherein, in Composition Formula (A), each of 100−a−b−c−d−e, a, b, c, d, and e represents an atomic percent of a relevant element when a total of Fe, Cu, Si, B, Nb, and C is 100 atom ...

METHOD FOR PRODUCING MOLD STEEL, MOLD STEEL, METHOD OF PRODUCING PRE-HARDENED MOLD MATERIAL, AND PRE-HARDENED MOLD MATERIAL

A method of producing a mold steel, the method including a first process of preparing a molten steel A that is obtained after vacuum refining and has a component composition including from 0.005% to 0.1% by mass of C, from 1.0% to 5.0% by mass of Ni, from 3.0% to 8.0% by mass of Cr, more than 0% but less than or equal to 2.0% by mass of Mo, more than 0% but less than or equal to 3.5% by mass of Cu, and more than 0% but less than or equal to 2.0% by mass of Al, in which an amount of O is 0.005% by mass or less and an amount of N is 0.03% by mass or less; a second process of reducing the amount of O and the amount of N in the molten steel A, by slag refining the molten steel A, to obtain a molten steel B; and a third process of casting the molten steel B, is provided. 1. A method of producing a mold steel , the method comprising:a first process of preparing a molten steel A that is obtained after vacuum refining and has a component composition comprising from 0.005% to 0.1% by mass of C, from 1.0% to 5.0% by mass of Ni, from 3.0% to 8.0% by mass of Cr, more than 0% but less than or equal to 2.0% by mass of Mo, more than 0% but less than or equal to 3.5% by mass of Cu, and more than 0% but less than or equal to 2.0% by mass of Al, wherein an amount of O is 0.005% by mass or less and an amount of N is 0.03% by mass or less;a second process of reducing the amount of O and the amount of N in the molten steel A, by slag refining the molten steel A, to obtain a molten steel B; anda third process of casting the molten steel B.2. The method of producing a mold steel according to claim 1 , wherein the molten steel B comprises more than 0% but less than or equal to 0.05% by mass of S.3. The method of producing a mold steel according to claim 1 , wherein claim 1 , in the molten steel B claim 1 , the amount of O is 0.001% by mass or less and the amount of N is 0.01% by mass or less.4. The method of producing a mold steel according to claim 1 , wherein the molten steel B comprises ...

STEEL, PRODUCT MADE OF SAID STEEL, AND MANUFACTURING METHOD THEREOF

Disclosed is a steel composition including specified ranges of Ni; Mo; Co; Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C; Co+Mo; Ni+Co+Mo; and traces of Al; Ti; N; Si; Mn; C; S; P; B; H; O; Cr; Cu; W; Zr; Ca; Mg; Nb; V; and Ta in specified ranges; the remainder being iron and impurities. The inclusion population, as observed by image analysis over a polished surface measuring 650 mmif hot-formed or hot-rolled; and measuring 800 mmif cold-rolled, does not contain non-metallic inclusions of diameter >10 μm, and, in the case of a hot-rolled sheet, does not contain more than four non-metallic inclusions of diameter 5-10 μm over 100 mm, the observation being performed by image analysis over a polished surface measuring 650 mm. 1. Steel , characterised in that its composition , in percentages by weight is as follows:10.0%≤Ni≤24.5%, preferably 12.0%≤Ni≤24.5%;1.0%≤Mo≤12.0%, preferably 2.5%≤Mo≤9.0%;1.0%≤Co≤25.0%;20.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%, preferably 22.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%, more preferably 22.5%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Ta+Cr+C≤29.0%;Co+Mo≥20.0%; preferably Co+Mo≥21.0%; more preferably Co+Mo≥22.0%;Ni+Co+Mo≥29%; preferably Ni+Co+Mo≥41.0%;traces ≤Al≤4.0%, preferably 0.01%≤Al≤1.0%;traces ≤Ti≤0.1%;traces ≤N≤0.0050%;traces ≤Si≤2.0%; preferably 0.04%≤Si≤2.0%;traces ≤Mn≤4.0%;traces ≤C≤0.03%;traces ≤S≤0.0020%, preferably traces ≤S≤0.0010%;traces ≤P≤0.005%;traces ≤B≤0.01%;traces ≤H≤0.0005%;traces ≤O≤0.0025%;traces ≤Cr≤5.0%;traces ≤Cu≤2.0%;traces ≤W≤4.0%;traces ≤Zr≤4.0%;traces ≤Ca≤0.1%;traces ≤Mg≤0.1%;traces ≤Nb≤4.0%;traces ≤V≤4.0%;traces ≤Ta≤4.0%;with the remainder being iron and impurities resulting from the smelting and manufacturing process;{'sup': 2', '2', '2', '2, 'and in that the inclusion population, as observed by means of image analysis over a polished surface measuring 650 mmif the steel is in the form of a component part/work piece that is hot-formed or a hot-rolled sheet; and measuring 800 mmif the steel is in the form of a cold-rolled sheet, ...

METHOD FOR PRODUCING A MOTOR VEHICLE COMPONENT FROM A 6000 SERIES ALUMINUM ALLOY

A method for producing a motor vehicle component from a 6000 series aluminum alloy including providing a blank made of a 6000 series aluminum alloy, rapid heating of the blank to a temperature between 450 deg. C. and 600 deg. C. at a heating rate of more than 15 K/s in a period of less than 20 seconds, ending the heating process and optionally homogenizing, if a grain size between 20 and 50 μm has been produced, quenching the blank thus tempered, applying a lubricant, preferably at 20 deg. C. to 100 deg. C., forming the cooled blank in a forming tool, wherein the time between completion of the heating process and the start of the forming is less than 30 seconds, and aging. 1. A method for producing a motor vehicle component from a 6000 series aluminum alloy , comprising:providing a blank made of a 6000 series aluminum alloy;rapid heating of the blank to a temperature between 450 deg. C. and 600 deg. C. at a heating rate of more than 15 K/s in a period of less than 20 seconds;ending the heating process and homogenizing, if a grain size between 20 and 50 μm has been produced;quenching the blank thus tempered;applying a lubricant at a temperature between 20 deg. C. to 100 deg. C.;forming the cooled blank in a forming tool, wherein the time between completion of the heating process and the start of the forming is less than 30 seconds: and,aging.4. The method according to claim 2 , wherein a relative ratio of the fractions in percent by weight of magnesium to silicon is from 5 to 7 up to 5 to 9.5. The method according to claim 2 , wherein the content in percent by weight of magnesium and silicon together is greater than or equal to 1.20 and less than or equal to 1.90.6. The method according to claim 5 , further comprising producing a yield limit Rp 0.2 of greater than 260 MPa claim 5 , in particular claim 5 , greater than 280 MPa.7. The method according to claim 6 , further comprising producing a tensile strength Rm of greater than 320 MPa.8. The method according to ...

POST-MANUFACTURING PROCESSES FOR SUBMERGED COMBUSTION BURNER

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

METHOD AND SYSTEM FOR PRODUCING LOW CARBON FERROALLOY FROM CHROMITE ORE

A method and system for recovering a high yield of low carbon ferroalloy, e.g., low carbon ferrochrome, from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.

METHOD OF ANNEALING METAL MEMBER

Provided is a method of annealing a metal member, including: disposing a first heater in an inner space of a hollow cylindrical metal member having an inner peripheral surface provided with plural teeth protruding toward a central direction, the first heater radiating infrared light and being disposed so as to extend parallel to a direction of a central axis of the metal member; heating the metal member from the inner space with the first heater; and gradually cooling the metal member after heating. 1. A method of annealing a metal member , the method comprising:disposing a first heater in an inner space of a hollow cylindrical metal member having an inner peripheral surface provided with a plurality of teeth protruding toward a central direction, the first heater radiating infrared light and being disposed so as to extend parallel to a direction of a central axis of the metal member;heating the metal member from the inner space with the first heater; andgradually cooling the metal member after heating.2. The method of annealing a metal member according to claim 1 , whereina plurality of the first heaters are arranged in a circumferential direction at equal intervals.3. The method of annealing a metal member according to claim 2 , whereina first separator that acts as a block between the plurality of the first heaters is disposed so as to extend along the central axis of the metal member.4. The method of annealing a metal member according to claim 3 , whereinthe first separator is made of at least one of white ceramic and aluminum.5. The method of annealing a metal member according to claim 2 , whereineach of the plurality of the first heaters is disposed between the plurality of teeth.65. The method of annealing a metal member according to claim claim 2 , whereina second separator that extends along the direction of the central axis of the metal member is disposed in the inner space of the metal member.7. The method of annealing a metal member according to claim 6 ...

STEEL H-SHAPE FOR LOW TEMPERATURE SERVICE AND MANUFACTURING METHOD THEREFOR

Provided is a steel H-shape for low temperature service including a predetermined chemical composition. A CEV obtained by CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 is 0.40 or less. A sum of an area ratio of one or both of ferrite and bainite at a 1/4 position from an outer side across a thickness of a flange and a 1/6 position from an outer side across a flange width is 90% or more, and an area ratio of a hard phase is 10% or less. An effective grain size is 20.0 μm or less, and a grain size of the hard phase is 10.0 μm or less. 30 pieces/mmor more Ti oxides having an equivalent circle diameter ranging from 0.01 to 3.0 μm are included. The thickness of the flange ranges from 12 to 50 mm. 1. A steel H-shape for low temperature service , the steel comprising , by mass % ,C: 0.03% to 0.13%,Mn: 0.80% to 2.00%,Nb: 0.005% to 0.060%,Ti: 0.005% to 0.025%,O: 0.0005% to 0.0100%,V: 0% to 0.08%,Cu: 0% to 0.40%,Ni: 0% to 0.70%,Mo: 0% to 0.10%,Cr: 0% to 0.20%,Si: limited to 0.50% or less,Al: limited to 0.008% or less,Ca: limited to 0.0010% or less,REM: limited to 0.0010% or less,Mg: limited to 0.0010% or less,N: limited to 0.0120% or less, anda remainder including of Fe and impurities,wherein a CEV obtained by the following Expression (1) is 0.40 or less,wherein at a 1/4 position from an outer side across a thickness of a flange and a 1/6 position from an outer side across a flange width, a sum of an area ratio of one or both of ferrite and bainite is 90% or more, and an area ratio of a hard phase is 10% or less,wherein an effective grain size is 20.0 μm or less, and a grain size of the hard phase is 10.0 μm or less,{'sup': '2', 'wherein 30 pieces/mmor more Ti oxides having an equivalent circle diameter ranging from 0.01 to 3.0 μm are included, and'} {'br': None, 'CEV=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15\u2003\u2003(1)'}, 'wherein a thickness of the flange is 12 to 50 mm,'}where, C, Mn, Cr, Mo, V, Ni, and Cu each indicate an amount of the element by mass %.2. The steel H-shape for low ...

Ni-Based Alloy Product and Method for Producing Same, and Ni-Based Alloy Member and Method for Producing Same

There are provided: an Ni-based alloy member including a γ′ phase precipitation with 36 to 60 volume % and exhibiting a high durable temperature and good cold workability; a method for producing the member; an Ni-based alloy product to be used as a precursor of the member; and a method for producing the product. The Ni-based alloy product has a two-phase structure composed of a γ phase and a γ′ phase being incoherent to the γ phase, the incoherent γ′ phase being present at a ratio of 20 volume % or higher. The Ni-based alloy member produced by cold working the Ni-based alloy product and subsequently by conducting heat treatment comprises a γ phase and a γ′ phase being coherent to the γ phase, the coherent γ′ phase being present at a ratio of 36 to 60 volume %, and has a predetermined shape. 1. A method for producing an Ni-based alloy product having a two-phase structure composed of crystalline grains of a γ phase and crystalline grains of the γ′ phase , in which the γ′ phase is an incoherent γ′ phase being located through γ phase grain boundaries of an incoherent interface , and in which the incoherent γ′ phase is present at a ratio of 20 volume % or higher in the two-phase structure , the method comprising:the step of melting and casting a first Ni-based alloy material to produce a second Ni-based alloy material; andthe step of hot-forging the second Ni-based alloy material obtained through the melting and casting step at temperatures equal to or higher than 1000° C. and wherein the γ and the γ′ phases coexist to produce a third Ni-based alloy material having an ingredient composition in which a γ′ phase at a ratio of 36 to 60 volume % can be precipitated in a temperature range of 700 to 900° C.; andthe step of forming the Ni-based alloy product from the third Ni-based alloy material.2. The method for producing an Ni-based alloy product according to claim 1 ,wherein the γ′ phase precipitates at a ratio of 10 volume % or higher in the hot-forging step.3. The method ...

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 ...

METHOD FOR MANUFACTURING HOT STAMPED BODY HAVING VERTICAL WALL AND HOT STAMPED BODY HAVING VERTICAL WALL

The present invention provides a method for manufacturing a hot stamped body having a vertical wall, the method including: a hot-rolling step; a coiling step; a cold-rolling step; a continuous annealing step; and a hot stamping step, in which the continuous annealing step includes a heating step of heating the cold-rolled steel sheet to a temperature range of equal to or higher than Ac° C. and lower than Ac° C.; a cooling step of cooling the heated cold-rolled steel sheet from the highest heating temperature to 660° C. at a cooling rate of equal to or less than 10° C./s; and a holding step of holding the cooled cold-rolled steel sheet in a temperature range of 550° C. to 660° C. for one minute to 10 minutes. 1. A hot stamped body wherein when a quenching start temperature is equal to or lower than 650° C., variation of Vickers hardness ΔHv of the hot stamped body is equal to or less than 100, when the quenching start temperature is 650° C. to 750° C., variation of Vickers hardness ΔHv of the hot stamped body is equal to or less than 60, and when the quenching start temperature is equal to or higher than 750° C., variation of Vickers hardness ΔHv of the hot stamped body is equal to or less than 40. This application is a Divisional of copending application Ser. No. 13/879,068 filed on Apr. 12, 2013, which was the National Phase of PCT International Application No. PCT/JP2011/074320 filed on Oct. 21, 2011 and claims priority under U.S.C. §119(a) to Application No. 2010-237249, filed in Japan on Oct. 22, 2010, all of which are hereby expressly incorporated by reference into the present application.The present invention relates to a method for manufacturing a hot stamped body having a vertical wall and a hot stamped body having a vertical wall.In order to obtain high-strength components of a grade of 1180 MPa or higher used for automobile components or the like with excellent dimensional precision, in recent years, a technology (hereinafter, referred to as hot stamping ...

IRON-BASED ALLOYS AND METHODS OF MAKING AND USE THEREOF

An iron-based alloy includes, in weight percent, carbon from about 2 to about 3 percent; manganese from about 0.1 to about 0.4 percent; silicon from about 0.3 to about 0.8 percent; chromium from about 11.5 to about 14.5 percent; nickel from about 0.05 to about 0.6 percent; vanadium from about 0.8 to about 2.2 percent; molybdenum from about 4 to about 7 percent; tungsten from about 3 to about 5 percent; niobium from about 1 to about 3 percent; cobalt from about 3 to about 5 percent; boron from zero to about 0.2 percent; and the balance containing iron and incidental impurities. The alloy is suitable for use in elevated temperature applications such as in valve seat inserts for combustion engines. 1. An iron-based alloy comprising , in weight percent:carbon from about 2 to about 3 percent;manganese from about 0.1 to about 0.4 percent;silicon from about 0.3 to about 0.8 percent;chromium from 11.5 to about 14.5 percent;nickel from about 0.05 to about 0.6 percent;vanadium from about 0.8 to about 2.2 percent;molybdenum from about 4 to about 7 percent;tungsten from about 3 to about 5 percent;niobium from about 1 to about 3 percent;cobalt from about 3 to about 5 percent;boron from zero to about 0.2 percent; andbalance iron and incidental impurities;wherein the alloy has a total carbon and silicon content of 2.3 to 3.5 percent and a microstructure of interdendritic regions comprising eutectic reaction phases.2. The alloy according to claim 1 , wherein the carbon content of the alloy is from about 2.4 to about 3 weight percent and a total carbon and silicon content is 2.7 to 3.4 percent.3. The alloy according to claim 1 , wherein the alloy contains at least about 0.08 weight percent boron.4. The alloy according to claim 1 , wherein the alloy contains at least about 2.4 weight percent carbon claim 1 , at least about 0.08 weight percent boron and a total carbon and silicon content is 2.7 to 3.3 percent.5. The alloy according to claim 1 , wherein the cobalt content of the alloy ...

THIN STRIP COMPONENT, METHOD FOR MANUFACTURING SAME, AND MOTOR USING THIN STRIP COMPONENT

A method for manufacturing a thin strip component, including a processing step of processing an amorphous thin strip member into a dimension shape larger than a target shape, and a heat treating step of heat treating and contracting the amorphous thin strip member processed in the processing step to form the amorphous thin strip member into a thin strip component of the target shape. A thin strip component which is a magnetic laminate in which a plurality of plate-shaped thin strip component members of the same shape are laminated, and has a recess over an entire side surface of the magnetic laminate is used. A motor including the thin strip component, a plurality of coils disposed on the thin strip component, and a rotor disposed between the plurality of coils is used. 1. A method for manufacturing a thin strip component , comprising:a processing step of processing an amorphous thin strip member into a dimension shape larger than a target shape; anda heat treating step of heat treating and contracting the amorphous thin strip member processed in the processing step to form the amorphous thin strip member into a thin strip component member of the target shape.2. The method for manufacturing a thin strip component of claim 1 , further comprising:a laminating step of laminating a plurality of the thin strip component members after the heat treating step.3. A method for manufacturing a thin strip component of claim 1 , comprising:a processing step of processing an amorphous thin strip into a dimension shape larger than a target shape;a laminating step of laminating the amorphous thin strips processed in the processing step; anda heat treating step of heat treating and contracting a laminate of the amorphous thin strips after the laminating step to form the amorphous thin strips into a laminated thin strip component members of the target shape.4. The method for manufacturing a thin strip component of claim 3 ,wherein, in the heat treating step, the heat treatment is ...

Steel for Surface Hardening, Having a High Edge Hardness and Having a Fine Ductile Grain Structure

The invention makes a steel available, which, in the case of edge-layer hardening without subsequent relaxation annealing, not only has the potential for developing a hardened edge layer having a great surface hardness, in particular a surface hardness that amounts to more than 820 HV1, but rather also possesses a ductile, fine-grained grain structure and, at the same time, can be easily welded. For this purpose, a steel according to the invention consists of (in weight %) C: 0.10-0.19%, Si: ≤0.15%, Mn: ≤1.0%, P: ≤0.015%, S: ≤0.015%, Cr: 0.2-1.0%, Ni: 0.7-2.0%, Mo: 0.5-1.0%, N: ≤0.015%, Al: 0.010-0.060%, Cu: ≤0.20%, B: ≤0.005%, as well as optionally, in each instance, one or more elements from the group “W, Ti, Nb, V, Ta” in content values in accordance with the following stipulations: W: 0.15-0.65%, Ti: 0.01-0.04%, Nb: 0.015-0.05%, Ta: 0.01-0.04%, V: 0.04-0.12%, and, as the remainder, of iron and unavoidable contaminants. 1. A steel containing (in weight-%)C: 0.10-0.19%,Si: ≤0.15%,Mn: ≤1.0%,P: ≤0.015%,S: ≤0.015%,Cr: 0.2-1.0%,Ni: 0.7-2.0%,Mo: 0.5-1.0%,N: ≤0.015%,Al: 0.010-0.060%,Cu: ≤0.20%,B: ≤0.005%as well as optionally, in each instance, one or more elements from the group “W, Ti, Nb, V, Ta” in a content in accordance with the following stipulationsW: 0.15-0.65%,Ti: 0.01-0.04%,Nb: 0.015-0.05%,Ta: 0.01-0.04%,V: 0.04-0.12%,remainder iron and unavoidable contaminants.2. The steel according to claim 1 , characterized in that its C content amounts to at most 0.13 wt %.3. The steel according to claim 1 , characterized in that its Cr content amounts to at least 0.3 wt %.4. The steel according to claim 1 , characterized in that its Cr content amounts to at most 0.5 wt %.5. The steel according to claim 1 , characterized in that its Ni content amounts to at least 1.5 wt %.6. The steel according to claim 1 , characterized in that its Mo content amounts to at most 0.65 wt %.7. The steel according to claim 1 , characterized in that its W content amounts to at most 0.35 wt %.8. ...

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.

Steel structure for hydrogen gas, mehtod for producing hydrogen storage tank, and method for producing hydrogen line pipe (as amended)

Provided is a steel structure for hydrogen gas such as a hydrogen storage tank or a hydrogen line pipe which achieves a lower fatigue crack propagation rate in a high-pressure hydrogen atmosphere than steels used in the related art and has high hydrogen embrittlement resistance. The steel structure for hydrogen gas, which has high hydrogen embrittlement resistance in high-pressure hydrogen gas, has a steel microstructure including any one of 10% to 95% of bainite on an area-ratio basis, 10% to 95% of martensite on an area-ratio basis, and 10% to 95% of pearlite on an area-ratio basis, with the balance being substantially ferrite.

SPLINED POWER TRANSMISSION COMPONENTS MADE USING HEAT-ASSISTED CALIBRATION PROCESS AND METHOD OF FORMING SUCH SPLINED POWER TRANSMISSION COMPONENTS

A method for forming a component utilizing ultra-high strength steel and components formed by the method. The method includes the step of providing a flat blank of ultra-high strength 22MnB5 steel. The next step of the method is cold forming the flat blank into an unfinished shape of a component while the blank is in an unhardened state. Then, heating the unfinished shape of the component and generating a spline form thereon. The method proceeds by forming a finished shape of the component using a quenching die resulting in a fine-grained martensitic component material structure and enabling net shape processing to establish final geometric dimensions of the component. 1. A method for forming splines in a component utilizing ultra-high strength steel including the steps of:providing a flat blank of ultra-high strength steel;forming the flat blank into an unfinished shape of a component;heating the unfinished shape of the component; andforming a finished shape of the component including splines using a quenching die having a radially-movable segmented tool.2. The method of claim 1 , further comprising:providing an inert atmosphere; andheating the unfinished shape of the component in the inert atmosphere.3. The method of claim 2 , wherein the step of heating the unfinished shape of the component in the inert atmosphere is further defined as heating the unfinished shape of the component in the inert atmosphere at a temperature between 850° C. and 950° C.4. The method of claim 1 , wherein the step of heating the unfinished shape of the component is further defined as heating the unfinished shape of the component at a temperature between 850° C. and 950° C.5. The method of claim 1 , wherein the step of forming the flat blank into an unfinished shape of a component is further defined as forming the flat blank into a cup-shaped preform without splines.6. The method of claim 5 , further comprising:installing the cup-shaped preform on a fixed mandrel, wherein the fixed ...

Flywheel Rotor

A solid steel flywheel rotor having improved material properties offers improved energy storage at reduced cost. A process for manufacturing the rotor is also provided. 1. A flywheel rotor comprising a rotationally symmetric mass made of a single piece of steel having a yield strength of at least 900 MPa , a fracture toughness of at least 70 MPa·m , and a maximal intrinsic defect size that is 2 mm or smaller.2. The flywheel rotor of not including a hole through a center axis of the mass.3. The flywheel rotor of wherein at least some portion of the mass is greater than 4 inches from an outer surface of the mass.4. The flywheel rotor of wherein the mass has a diameter greater along a first axis than its thickness along a second axis.5. The flywheel rotor of further comprising a plurality of journals protruding from the mass claim 1 , each journal shaped to physically couple to an external shaft.6. The flywheel rotor of wherein the rotor has a mass within a range of 2 to 5 tons.7. The flywheel rotor of wherein the mass has an outer diameter within a range of 36 to 72 inches at its greatest point.8. The flywheel rotor of wherein the mass is formed of vacuum-arc-remelted (VAR) claim 1 , through-hardened claim 1 , and tempered 300M steel.9. The flywheel rotor of wherein the mass comprises a fishtail shape.10. A flywheel rotor comprising a rotationally symmetric mass made of a single piece of vacuum-arc-remelted (VAR) claim 1 , through-hardened claim 1 , and tempered 300M steel claim 1 , the mass comprising a plurality of journals protruding from the mass claim 1 , each journal shaped to physically couple to an external shaft.11. The flywheel rotor of having a yield strength of at least 900 MPa.12. The flywheel rotor of having a fracture toughness of at least 70 MPa·m.13. The flywheel rotor of having a maximal intrinsic defect size that is 2 mm or smaller.14. The flywheel rotor of not including a hole through a center axis of the mass.15. The flywheel rotor of wherein at ...

METHOD OF MANUFACTURING A ROTOR AND ELECTRIC MACHINE

The invention relates to a method of manufacturing a rotor for an electric machine, wherein the rotor is composed of at least one electric sheet wherein at least one electric sheet is thermally treated regionally to directly modify its magnetic permeability in the treated region. 1. A method of manufacturing a rotor for an electric machine , wherein the rotor is composed of at least one electric sheet and at least one electric sheet is thermally treated regionally to directly modify its magnetic permeability in the treated region , androtor sections adjacent to the treated region are cooled during the thermal treatment.2. The method in accordance with claim 1 , wherein the electric sheet is heated over a predefined period of time to change the crystal structure of the electric sheet in the treated region and is subsequently cooled to bring about a stable lattice state.3. The method in accordance with claim 2 , wherein the electric sheet is heated by means of induction heating.4. The method in accordance with claim 2 , wherein the electric sheet is heated by means of a flame.5. The method in accordance with claim 2 , wherein the electric sheet is heated by means of resistive heating by supplying electrical energy.6. The method in accordance with claim 2 , wherein the electric sheet is heated by means of direct or indirect contact heat.7. The method in accordance with claim 1 , wherein the rotor region to be treated is heated to a minimum temperature in dependence on an alloy of the electric sheet.8. The method in accordance with claim 1 , wherein the electric sheet is provided with flux barriers or slots and at least some of the webs of the electric sheet thereby formed are thermally treated.9. A rotor for an electric machine claim 1 , having at least one electric sheet claim 1 , wherein the electric sheet is sectionally characterized by a differing magnetic permeability; wherein the electric sheet is thermally treated regionally to directly modify its magnetic ...

STAINLESS STEEL POWDERS FOR ADDITIVE MANUFACTURING

Exemplary alloys may be particularly suited for additive manufacturing applications, and may comprise iron and one or more of: chromium (Cr), nickel (Ni), carbon (C), and copper (Cu). Exemplary alloys may have a majority microstructure that is martensite. 1. An alloy comprising , by weight percentage:14.25% to 15.75% chromium;2.90% to 5.0% nickel;0.03% to 0.08% carbon;2.90% to 4.50% copper;no more than 0.01% niobium;no more than 0.02% nitrogen;no more than 0.04% oxygen; andthe balance of weight percent comprising iron and incidental elements and impurities.2. The alloy according to claim 1 , wherein the alloy includes no more than 0.01% tantalum claim 1 , no more than 0.01% silicon claim 1 , and no more than 0.5% manganese.3. The alloy according to claim 1 , wherein a ratio of nickel to copper is no less than 1.4. The alloy according to claim 1 , comprising claim 1 , by weight percentage claim 1 , 14.7% to 15.5% chromium claim 1 , 2.9% to 3.9% nickel; 0.03% to 0.07% carbon claim 1 , 2.9% to 3.9% copper; and 0.05% to 0.25% titanium.5. The alloy according to claim 4 , comprising about 0.01% nitrogen and about 0.03% oxygen.6. The alloy according to claim 1 , comprising claim 1 , by weight percentage claim 1 , 14.7% to 15.5% chromium claim 1 , 4.0% to 5.0% nickel; 0.04% to 0.08% carbon claim 1 , 3.5% to 4.5% copper; and less than 0.01% titanium.7. The alloy according to claim 4 , wherein the alloy claim 4 , after being subjected to an additive manufacturing process and after aging at 482° C. (±8.5° C.) for 1 hour has a microstructure that is more than 75% martensite.8. The alloy according to claim 6 , wherein the alloy claim 6 , after being subjected to an additive manufacturing process and after aging at 482° C. (±8.5° C.) for 1 hour has a microstructure that is more than 85% martensite.9. The alloy according to claim 1 , wherein the alloy claim 1 , after being subjected to an additive manufacturing process claim 1 , and without performing any aging or solution heat ...

STEEL, PRODUCT CREATED FROM SAID STEEL, AND MANUFACTURING METHOD THEREOF

Disclosed is a steel whose composition includes specified wt % of: Ni, Mo, Co, Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Y+Ta+Cr+C+Al+B+Ti+N, Ni+Co+Mo, Al, Ti, N, Si, Mn, C, S, P, B, H, O, Cr, Cu, W, Zr, Ca, Mg, Nb, V, Ta, Y, the remainder being iron and impurities resulting from production. The inclusion population, observed by image analysis on a polished surface of 650 mmif the steel is in the form of a hot-formed part or a hot-rolled sheet and 800 mmif the steel is in the form of a cold-rolled sheet, does not include non-metal inclusions of an equivalent diameter greater than 10 μm. Also disclosed are a product created from the steel, and a manufacturing method. 123-. (canceled)24. Steel , having the following composition in weight percent:10.0%≤Ni≤24.5%;1.0%≤Mo≤12.0%;1.0%≤Co≤18.0%;14.0%≤Mo+Co+Si+Mn+Cu+W+V+Nb+Zr+Y+Ta+Cr+C+Al+B+Ti+N≤29.0%;21.5%≤Ni+Co+Mo≤47.5%;traces≤Al≤4.0%;traces≤Ti≤0.1%;traces≤N≤0.010%;traces≤Si≤4.0%;traces≤Mn≤13.0%;traces≤C≤0.03%;traces≤S≤0.0020%;traces≤P≤0.005%;traces≤B≤0.01%;traces≤H≤0.0005%;traces≤O≤0.03%;traces≤Cr≤5.0%;traces≤Cu≤4%;traces≤W≤6.0%;traces≤Zr≤4.0%;traces≤Ca≤0.1%;traces≤Mg≤0.8%;traces≤Nb≤4.0%;traces≤V≤4.0%;traces≤Ta≤4.0%;traces≤Y≤4.0%;{'sup': 2', '2, 'and the inclusion population observed under image analysis on a polished surface of 650 mmif the steel is in the form of a hot worked part or hot rolled sheet, and 800 mmif the steel is in the form of cold rolled sheet, does not contain non-metallic inclusions having an equivalent diameter larger than 10 μm.'}25. Method for producing a steel product , wherein:{'claim-ref': {'@idref': 'CLM-00024', 'claim 24'}, 'a remelting electrode is prepared in steel having a composition conforming to that in ;'}this electrode is remelted using a single or multiple remelting process to obtain a remelted electrode;the remelted electrode is subjected to at least one hot working at a temperature of between 1050 and 1300° C., to obtain hot worked sheet or hot worked strip;and optionally heat treatment is applied to ...

Methods for treating a cast iron workpiece

Examples of methods for treating a cast iron workpiece are disclosed herein. In one example of the method, a nanocrystallized microstructure at a finish surface of the cast iron workpiece is roller burnished. The roller burnishing reduces roughness of the nanocrystallized microstructure. In another example of the method, a machined, finish surface of the cast iron workpiece is deformed by rubbing the machined, finish surface against a blunt tool to form a nanocrystallized microstructure at the machined, finish surface. The machined, finish surface is cooled simultaneously with the deforming to promote nanocrystallization of the machined, finish surface.

METHOD FOR MANUFACTURING SUPERIOR 13CR TOOL COUPLER

The present invention discloses a method for manufacturing a superior 13Cr tool coupler, which method comprises the following steps: manufacturing a blank; 2. The method of claim 1 , wherein the 13Cr tool coupler consists essentially of 0.01-0.05 wt % carbon claim 1 , ≦0.5 wt % silicon claim 1 , 0.2-1.0 wt % manganese claim 1 , 12-14 wt % chromium claim 1 , 1-3 wt % molybdenum claim 1 , 4-6 wt % nickel claim 1 , and a balance of iron (Fe) and other impurities.3. The method of claim 1 , wherein the manufactured blank is forged at a temperature ranging from 1150-1200° C.4. The method of claim 1 , wherein the annealed blank is quenched at a temperature ranging from 950-1000° C.5. The method of claim 1 , wherein the annealed blank is quenched with oil.6. The method of claim 1 , wherein the quenched blank is tempered at a temperature ranging from 600-650° C.7. The method of claim 1 , further comprising rough machining the annealed blank before quenching the annealed blank. The present invention relates to a method for manufacturing a coupler, and in particular a method for manufacturing a high alloy coupler.Drillrods for use in oil and natural gas exploration are manufactured according to the API SPEC 5DP standards. The structure thereof has an externally threaded drillrod coupler and an internally threaded drillrod coupler which are respectively frictionally butt-welded at the two ends of the drillrod tube body. Drillrods in compliance with the API SPEC 5DP standards are of a low alloy steel material.With the development of the oil industry, the conditions in which drillrods operate become more and more severe, drillrods of the low alloy steel material as per the API SPEC 5DP standards now fail to fulfill the increasingly harsh requirements of well drilling operation, and there exists an urgent need for a high alloy drillrod. To this end, aluminum alloy drillrods and titanium alloy drillrods appeared on the market. The aluminum alloy drillrods are manufactured as per ...

HOT FORMING LINE AND METHOD FOR PRODUCING HOT FORMED SHEET METAL PRODUCTS

A hot forming line for producing hot formed and press hardened sheet metal products made from metal plates includes a heating station and a forming station. The heating station has a bottom tool and an top tool between which a metal plate is received. The metal plate is heated in the heating station by indirect resistance heating. The heat is generated outside the metal plate and is transmitted by heat conduction into the metal plate itself. For this the bottom tool and/or the top tool has an electric resistance heating with at least one surface heating element. The surface heating element is a heating plate with a plate body made of an electrically conductive material, wherein the plate body is configured as heat conductor. For this the plate body is slotted and is for example provided with a slot, which extends over the thickness of the plate body. 1. A hot forming line comprising:a heating station and a forming station for producing hot formed and in particular press hardened sheet metal products from metal plates, said heating station having a bottom tool and an top tool constructed to receive there between a metal plate to be heated, said bottom tool and/or said top tool having an electric resistance heating comprising at least one surface heating element constructed as a heating plate, said heating plate comprising a plate body made from an electrically conductive material said plate body being configured as a heat conductor.2. The hot forming line of claim 1 , wherein the heat conductor has a length claim 1 , which is longer than a shortest distance between electric contacts of the heat conductor.3. The hot forming line of claim 1 , wherein the heat conductor is multiply wound claim 1 , in particular extends meander shaped or spiral shaped.4. The hot forming line of claim 1 , wherein the heat conductor is formed in the plate body by at least one slot which extends over a thickness of the plate body.5. The hot forming line of claim 1 , wherein the heat ...

METHOD FOR MANUFACTURING A COMPONENT CONTAINING AN IRON ALLOY MATERIAL

In a method for manufacturing a component containing an iron alloy material, a pulverulent pre-alloy is provided. The pre-alloy comprises, in wt. %, 0.01 to 1% C, 0.0.01 to 30% Mn, ≤6% Al, and 0.05 to 6.0% Si, the remainder being Fe and usual contaminants. The pulverulent pre-alloy is mixed with at least one of elementary Ag powder, elementary Au powder, elementary Pd powder and elementary Pt powder so as to produce a powder mixture containing 0.1 to 20% of at least one of Ag, Au, Pd and Pt. The powder mixture is applied onto a carrier () by means of a powder application device (). Electromagnetic or particle radiation is selectively irradiated onto the powder mixture applied onto the carrier () by means of an irradiation device () so as to generate a component from the powder mixture by an additive layer construction method. 16.-. (canceled)7. An iron alloy material , comprising in wt. %:0.01 to 1% C0.01 to 30% Mn≤6% Al,0.05 to 6.0% Si, and0.1 to 20% Ag,the remainder being Fe and usual contaminants.8. The iron alloy material according to claim 7 ,further comprising at least one of Cr at a content of ≤2%, Cu at a content of ≤2%, Ti at a content of ≤2%, Co at a content of ≤2%, Zr at a content of ≤2%, V at a content of ≤2%, Nb at a content of ≤2%, Ta at a content of ≤2% and B at a content of ≤0.2%.9. The iron alloy material according to claim 7 ,wherein the Ag content of the iron alloy material is ≤15%, in particular ≤10% and more particular ≤5%.10. The iron alloy material according to claim 7 ,wherein the Ag content of the iron alloy material is ≥0.5%, in particular ≥1% and more particular ≥2%.11. The iron alloy material according to claim 7 ,wherein, in the microstructure of the iron alloy material, Ag is present in the form of Ag particles dispersed in an iron alloy matrix.12. The iron alloy material according to claim 7 ,wherein, in the microstructure of the iron alloy material, an iron alloy matrix is present which, upon plastic deformation of the iron alloy ...

LEAD FREE STEEL AND METHOD OF MANUFACTURING

An essentially lead free steel having, in percent by weight (wt-%): Carbon: 0.39-0.43%; Manganese: 0.75-1.00%; Silicon: 0.15-0.35%; Chromium: 0.80-1.05%; Molybdenum: 0.15-0.25%; at least one of Tellurium: 0.003-0.090 wt-%, Selenium: 0.080-0.2 wt-%, Sulfur: 0.065-0.09% wt-%, and Bismuth: 0.03-0.1 wt-%; and the balance being Fe and normally occurring scrap steel impurities. A method for manufacturing an essentially lead free steel by subjecting a hot-rolled steel product to a heat treatment in which the steel product is subjected to a first temperature for a first duration; the steel product is subjected to a second temperature for a second duration, wherein the second temperature is less than the first temperature; and the steel product is subjected to a third temperature for a third time period, wherein the third temperature is greater than the second temperature; and cooling the steel product. After the heat treatment the steel is cold worked to the desired size. 1. A steel product that is essentially lead free , wherein the steel product comprises:carbon in a range of 0.2 to 0.6 wt-%;manganese in a range of 0.6 to 1.1 wt-%;silicon in a range of 0.1 to 0.4 wt-%;chromium in a range of 0.6 to 1.2 wt-%;molybdenum in a range of 0.1 to 0.3 wt-%; tellurium in a range of 0.001 to 0.12 wt-%;', 'selenium in a range of 0.05 to 0.25 wt-%;', 'sulfur in a range of 0.4 to 0.12 wt-%; or', 'bismuth in a range of 0.01 to 0.15 wt-%;, 'at least one or more ofbalance being Fe and normally occurring scrap steel impurities; andwherein a microstructure of the steel product comprises lamellar perlite; a first temperature for a first duration;', 'a second temperature for a second duration, wherein the second temperature is less than the first temperature;', 'a third temperature for a for a third duration, wherein the third temperature is greater than the second temperature, and wherein an increase from the second temperature to the third temperature occurs over a duration that is greater ...

Stabilizer bar and process of producing a stabilizer bar

A stabilizer bar for a chassis of a motor vehicle comprises a torsion spring portion and two arms bent away from the torsion spring portion; wherein the arms each comprise a formed end portion with a through-opening and a tubular portion, wherein the torsion spring portion comprises a hardened structure with a strength of at least 1000 MPa; and wherein the formed end portions comprise a hardened structure with a strength of at least 800 MPa. A process of producing a corresponding stabilizer is further disclosed.

METHOD FOR QUENCH SEASONING OF IRON/STEEL COOKWARE

The method for quench seasoning multiple units of iron/steel cookware includes the steps of: preheating each cookware unit to a temperature above the smoke point of oil in an oil bath; rapidly plunging the preheated cookware units into the oil bath to completely submerge the cookware units and quickly enough to ensure the temperature of the cookware units remain above oil smoke point; controlling the temperature of the oil bath to a ensure that the temperature of the oil bath does not reach a temperature close to oil smoke point, for example, a temperature within 20 degrees below smoke point, and retrieving the cookware units from the oil bath. 1. A method for quench seasoning multiple units of iron/steel cookware comprising the steps of:preheating each cookware unit to a temperature above the smoke point of oil in an oil bath;rapidly plunging the preheated cookware units into an oil bath to completely submerge the units and quickly enough to ensure the temperature of the cookware units remain above oil smoke point;controlling the temperature of the oil bath to a ensure that the temperature of the oil bath does not reach a temperature too close to oil smoke point; andretrieving the cookware units from the oil bath.2. The method of wherein the step of preheating the cookware units comprises the steps of:heating an oven;placing the cookware units on a conveyor belt; andmoving the cookware units on the conveyor belt through the oven such that the cookware units are heated to a temperature above the smoke point of oil in an oil bath.3. The method of wherein the step of rapidly plunging the preheated cookware units into an oil bath comprises providing a chute extending from the oven to the oil bath such that the cookware units move from the oven to the oil bath.4. The method of further comprising the step of draining excess oil back into the oil after the cookware units are removed from the oil bath.5. The method of further comprising the step of draining excess oil by ...

IRON-BASED ALLOYS AND METHODS OF MAKING AND USE THEREOF

An iron-based alloy includes (in weight percent) carbon from about 1 to about 2 percent; manganese up to about 1 percent; silicon up to about 1 percent; nickel up to about 4 percent; chromium from about 10 to about 25 percent; molybdenum from about 5 to about 20 percent; tungsten up to about 4 percent; cobalt from about 17 to about 23 percent; vanadium up to about 1.5 percent; boron up to about 0.2 percent; sulfur up to about 0.03 percent; nitrogen up to about 0.4 percent; phosphorus up to about 0.06 percent; niobium up to about 4 percent; iron from about 35 to about 55 percent; and incidental impurities. The chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5. The alloy is suitable for use in elevated temperature applications, such as valve seat inserts for combustion engines. 1. An iron-based alloy comprising , in weight percent:carbon from about 1 to about 2 percent;manganese up to about 1 percent;silicon up to about 1 percent;nickel up to about 4 percent;chromium from about 10 to about 25 percent;molybdenum from about 5 to about 20 percent;tungsten up to about 4 percent;cobalt from about 17 to about 23 percent;vanadium up to about 1.5 percent;boron up to about 0.2 percent;sulfur up to about 0.03 percent;nitrogen up to about 0.4 percent;phosphorus up to about 0.06 percent;niobium up to about 4 percent;iron from about 35 to about 55 percent; andincidental impurities;wherein the chromium/molybdenum ratio of the iron-based alloy is from about 1 to about 2.5.2. The iron-based alloy of claim 1 , wherein the iron-based alloy consists essentially of claim 1 , in weight percent:carbon from about 1.4 to about 1.9 percent;manganese up to about 1 percent;silicon up to about 1 percent;nickel up to about 1 percent;chromium from about 13 to about 19 percent;molybdenum from about 8 to about 14 percent;tungsten up to about 1 percent;cobalt from about 19 to about 22 percent;vanadium up to about 0.5 percent;niobium up to about 1 percent;nitrogen up to ...

Mold cavity with improved wear resistance and method of manufacture thereof

A method and system for forming a mold cavity is provided. The method and system contemplate a process of discharging a hardening element or material into a first material and subsequently machining the infused product to a desired shape such as a tear bead shape for a mold cavity for forming rubber and metal components. The methods and systems provided herein contemplate selective hardening of specific portions or features of a mold cavity without the need to provide conventional cooling or quenching operations.

QUENCH PLUG SYSTEMS AND THEIR USE

Quench plug systems and their use in heat treating a workpiece. The quench plug system includes a tapered plug having a longitudinal core axis and a mandrel configured to be interposed between the tapered plug and the workpiece. The tapered plug is configured to allow the mandrel to translate along the core axis of the tapered plug when the workpiece is heated. 1. A quench plug system for use in heat treating a workpiece , the quench plug system comprising:a tapered plug having a longitudinal core axis; anda mandrel configured to be interposed between the tapered plug and the workpiece, wherein the tapered plug is configured to allow the mandrel to translate along the core axis of the tapered plug when the workpiece is heated.2. The quench plug system of claim 1 , wherein the tapered plug has a first end and a second end claim 1 , the second end having a larger circumference than a circumference of the first end.3. The quench plug system of claim 1 , wherein the tapered plug has a lower coefficient of thermal expansion than a coefficient of thermal expansion of the workpiece or a coefficient of thermal expansion of the mandrel.4. The quench plug system of claim 1 , wherein the tapered plug includes at least one of an Invar alloy or titanium metal.5. The quench plug system of claim 1 , wherein the tapered plug has an outside taper angle and the mandrel has an inside taper angle claim 1 , and the outside taper angle of the tapered plug is complementary to the inside taper angle of the mandrel.6. The quench plug system of claim 1 , wherein the tapered plug is substantially frusto-conical claim 1 , the mandrel has an outer surface that is substantially cylindrical claim 1 , and the workpiece has an inner surface that is substantially cylindrical.7. The quench plug system of claim 1 , wherein the mandrel includes a plurality of individual mandrel components claim 1 , such that when the mandrel translates along the core axis of the tapered plug the outer diameter of the ...

IMPACT RESISTANT DUCTILE IRON CASTINGS

A highly impact resistant ductile iron casting is made from a specified high nickel content ductile iron composition and post-treated with a specified heating and cooling profile to achieve an elongation exceeding the ASTM A536 (“60-40-18”) standard, and meeting or exceeding Charpy V Notch impact resistance at −20° F. of greater than 11.0 ft. lbs. 1. A ductile iron alloy composition having carbon present in a range of 3.75% to 3.93%;manganese present in a range of 0.10% to 0.19%; phosphorus present in an amount up to 0.032%; sulfur present in an amount up to 0.021%; silicon present in a range of 1.95% to 2.39%; nickel present in a range of 0.81% to 0.99%; copper present in a range of 0.02% to 0.09%; and having a Carbon Equivalence greater than 4.3; the iron composition having a tensile strength of at least 58,000 psi; yield strength at least 38,000 psi; elongation at least 21%; and Charpy V notch impact resistance at −20° F. of at least 11 ft. lbs.2. The ductile iron alloy composition according to claim 1 , wherein the carbon is present in a range of 3.75% to 3.90% claim 1 , the silicon is present in a range of 2.08% to 2.39%; the manganese is present in a range of 0.11% to 0.19%; and the sulfur is present in an amount up to 0.016%.3. The ductile iron alloy composition according to having a tensile strength of at least 60 claim 1 ,000 psi and yield strength of at least 40 claim 1 ,000 psi.4. The ductile iron alloy composition according to claim 1 , wherein the composition is a casting having a maximum thickness up to 4 inches.5. The ductile iron alloy composition according to claim 1 , wherein the composition is a casting used in the rail industry.6. The ductile iron alloy composition of claim 5 , wherein the composition is a casting selected from the group consisting of a bearing housing claim 5 , a lifting hook claim 5 , and a chevron adapter.7. The ductile iron alloy composition according to claim 1 , wherein the composition is hypereutectic and has a Carbon ...

METHOD OF MANUFACTURING BUMPER BACK BEAM FOR VEHICLES

A method of manufacturing a bumper back beam for vehicles is provided. The method includes shaping a planar strip using a pressing process and a planar surface component are formed within a central portion of the strip in a longitudinal direction thereof, and recessed components are formed on opposite sides of the planar surface part, and a first flange is formed on an exterior edge of each recessed component. Further, each of the recessed components are bent vertically around a bending boundary line formed between the planar surface component and the corresponding recessed component and the opposite first flanges contact the planar surface component. Additionally, the edges of the opposite first flanges are welded to the planar surface component and the back beam has a pair of closed section components defined by the planar surface component and the recessed components. 1. A method of manufacturing a bumper back beam for vehicles , comprising:shaping a planar strip using a pressing process, a planar surface component is formed in a central portion of the strip in a longitudinal direction thereof, recessed components each of which extend in the longitudinal direction and protrudes downward are formed on opposite sides of the planar surface part, and a first flange having a planar shape is formed on an exterior edge of each of the recessed components;bending each of the opposite recessed components vertically around a bending boundary line formed between the planar surface component and the corresponding recessed component and the opposite first contacts an upper surface of the planar surface part; andwelding, to the planar surface part, edges of the opposite first flanges that contact the upper surface of the planar surface component and the bumper back beam has a pair of closed section components defined by the planar surface component and the opposite recessed components.2. The method according to claim 1 , wherein:the shaping includes forming, the first flanges ...

METHOD FOR PRODUCING A STEEL COMPONENT WHICH IS SHAPED BY HOT-FORMING A STEEL SHEET WHICH HAS A METAL COATING, SUCH A STEEL SHEET, AND A STEEL COMPONENT PRODUCED FROM SAID STEEL SHEET BY MEANS OF A HOT-FORMING PROCESS

A process for producing a three-dimensionally shaped steel component from a steel sheet with a metallic coating may involve hot forming the steel sheet into the steel component. The metallic coating may involve an Fe—Al-based alloy. To protect the steel sheet or the steel component against scale formation, the Fe—Al-based alloy may be applied directly to the steel sheet by galvanic coating and/or physical vapor deposition. The coating produced in this way may contain 30-60% by weight Fe, a balance of Al, and, in some cases, 0.1-10% by weight Mg, 0.1-5% by weight Ti, 0.1-10% by weight Si, 0.1-10% by weight Li, and/or 0.1-10% by weight Ca. Before heating the coated steel sheet as part of the hot forming process, the coated steel sheet may have an Fe—Al phase is stable to above 900° C.” 112.-. (canceled)13. A process for producing a three-dimensionally shaped steel component from a steel sheet , the process comprising: 30-60% by weight Fe, and', 'a balance of Al; and, 'applying a metallic coating comprising an Fe—Al based alloy directly to a steel sheet by at least one of galvanic coating or physical vapor deposition, wherein the metallic coating applied in this way includes'}hot forming the steel sheet into a steel component,wherein prior to heating the steel sheet as part of the hot forming, the steel sheet has an Fe—Al phase that is stable to above 900° C.14. The process of wherein the metallic coating further includes0.1-10% by weight Mg;0.1-5% by weight Ti;0.1-10% by weight Si;0.1-10% by weight Li; and0.1-10% by weight Ca.15. The process of wherein the metallic coating further includes at least one of0.1-10% by weight Mg;0.1-5% by weight Ti;0.1-10% by weight Si;0.1-10% by weight Li; or0.1-10% by weight Ca.16. The process of wherein the Fe—Al based alloy includes at least 28% by weight Al.17. The process of wherein the Fe—Al based alloy includes at least 38% by weight Al.18. The process of wherein the Fe—Al based alloy includes at least one of 0.1-10% by weight Mg ...

MULTI-PROCESS HARDENING METHOD

Embodiments of multi-process hardened golf club heads and methods of multi-process hardening of golf club heads are generally described herein. Other embodiments and methods may be described and claimed. 1. A method of a club head assembly , the method comprising:(a) providing a golf club head having a recess, and providing a faceplate, wherein the golf club head and the faceplate are formed from an α-β Ti alloy, the α-β Ti alloy comprising between 5.5 wt % to 6.75 wt % aluminum (Al), between 3.5 wt % to 4.5 wt % vanadium (V), a maximum of 0.08 wt % carbon (C), a maximum of 0.03 wt % silicon (Si), a maximum of 0.3 wt % iron (Fe), a maximum of 0.2 wt % oxygen (O), a maximum of 0.015 wt % tin (Sn), and a trace of molybdenum (Mo);(b) aligning the faceplate with the recess of the golf club head;(c) welding the faceplate to the golf club head;(d) heat treating the club head assembly to a temperature just below the β-transus temperature of the α-β Ti alloy for a predetermined amount of time;(e) quenching the club head assembly to room temperature;{'sub': '3', '(f) ageing the club head assembly to a temperature just below the TiAl solution temperature; and'}(g) reducing the temperature of the club head assembly to room temperature by increments of at most 400° C. every hour.2. The method of claim 1 , wherein the club head assembly of step (d) is heat treated in an α-β Ti alloy solution between 425° C. and 550° C.3. The method of claim 1 , wherein the club head assembly of step (e) comprising fluids selected from the group consisting of straight oils claim 1 , water claim 1 , water claim 1 , water soluble fluid claim 1 , micro-dispersion oils claim 1 , and synthetic or semi-synthetic fluids.4. The method of claim 1 , wherein the club head assembly of step (e) is quenched at a quenching rate of at least 550° C. per second.5. The method of claim 1 , wherein the club head assembly of step (f) is aged by induction heat with induction heating coils.6. The method of claim 1 , ...

DRY VARIABLE SPEED DRIVE MECHANISM

A variable speed drive having a rotatable drive shaft, a fixed sheave fixed relative to the drive shaft and mounted for rotation with the drive shaft, a movable sheave mounted for axial movement relative to the drive shaft, a plurality of drive fingers projecting axially from one of the sheaves, each drive finger defining a finger contact, and a plurality of recesses in the other sheave, each drive finger being movably received by a corresponding one of the recesses, and each recess defining a recess contact that slidably engages the corresponding finger contact. 1. A variable speed drive comprising:a rotatable drive shaft;a fixed sheave fixed relative to the drive shaft and mounted for rotation with the drive shaft;a movable sheave mounted for axial movement relative to the drive shaft;a plurality of drive fingers projecting axially from one of the sheaves, each drive finger defining a finger contact; anda plurality of recesses in the other sheave, each drive finger being movably received by a corresponding one of the recesses, and each recess defining a recess contact that slidably engages the corresponding finger contact.2. The variable drive assembly of claim 1 , wherein the finger contact is formed of a material that is hardened through a surface treatment.3. The variable drive assembly of claim 1 , wherein the recess contact is formed of a material that is hardened through a surface treatment.4. The variable drive assembly of claim 1 , wherein both the finger contact and the recess contact are formed of a material that is hardened through a surface treatment.5. The variable drive assembly of claim 4 , wherein the surface treatment is a heat treatment such as quenching claim 4 , tempering claim 4 , case hardening claim 4 , or laser hardening.6. The variable drive assembly of claim 1 , wherein at least one of the finger contact or the recess contact are formed of a material that is hardened through austempering.7. The variable drive assembly of claim 1 , wherein ...

Rolled round steel material for steering rack bar and steering rack bar

A rolled round steel material for a steering rack bar, having a chemical composition consisting of C: 0.38 to 0.55%, Si: not more than 1.0%, Mn: 0.20 to 2.0%, S: 0.005 to 0.10%, Cr: 0.01 to 2.0%, Al: 0.003 to 0.10%, and N: 0.003 to 0.03%, with the balance being Fe and impurities, and P being not more than 0.030% in the impurities, and a microstructure consisting of ferrite (F), lamellar pearlite (LP), and cementite (C), wherein in a cross-section perpendicular to the rolling direction: an average grain diameter of F≦10 μm, an area fraction of LP is less than 20%, and the number of particles of spheroidal cementite (SC) among C≧4×10 5 /mm 2 , in a region from the surface to a position at ½ radius; and an area fraction of LP≧20% and the number of particles of SC<4×10 5 /mm 2 , in a central part, and wherein in a cross-section including a center line of the round steel material and parallel to the rolling direction: an average aspect ratio of F is ≧3 in a region from a surface to a position at ½ radius.

PLUNGER WITH ION NITRIDING TREATMENT FOR A HYDRAULIC FRACTURING PUMP AND A METHOD FOR MAKING SAID PLUNGER

Steel plungers for hydraulic fracturing pumps having enhanced surface hardness properties, preferably made of alloyed steel and a method for manufacturing said plungers, comprising an ion nitriding process. 1. A plunger for a hydraulic fracturing pump , wherein the plunger is a steel plunger treated with an ion nitriding process.2. The plunger according to claim 1 , wherein the steel is alloyed steel.3. The plunger according to claim 1 , wherein the steel is selected from the group comprising AISI H13 steel claim 1 , DIN 34CrAlNi 7 steel claim 1 , SAE-AISI 4000 series steel or equivalents thereof.4. The plunger according to claim 3 , wherein the SAE-AISI 4000 series steel is a SAE-AISI 4140 steel.5. The plunger according to claim 2 , wherein the alloyed steel is a quenched and tempered steel.6. The plunger according to claim 5 , wherein the alloyed steel is a steel quenched and subjected to a double-tempering treatment.7. The plunger according to claim 1 , wherein the plunger is further subjected to physical vapor deposition (PVD) surface treatment.8. The plunger according to claim 7 , wherein the PVD coating is about 5 μm thick.9. The plunger according to claim 7 , wherein the PVD coating is a monolayer coating of elements selected from the group comprising Al claim 7 , Cr and Ni.10. A method for manufacturing a plunger for a hydraulic fracturing pump claim 7 , where the method comprises carrying out a surface treatment of a steel plunger by means of an ion nitriding process.11. The method according to wherein the steel plunger is made of alloyed steel.12. The method according to wherein the alloyed steel is selected from the group comprising AISI H13 steel claim 11 , DIN 34CrAlNi 7steel claim 11 , SAE-AISI 4000 series steel or equivalents thereof.13. The method according to claim 12 , wherein the SAE-AISI 4000 series steel is a SAE-AISI 4140 steel.14. The method according to anyone of wherein the alloyed steel plunger is further subjected to a double-tempering ...