СПОСОБ ПОВЕРХНОСТНОЙ ОБРАБОТКИ МАЛОУГЛЕРОДИСТОЙ СТАЛИ

Изобретение относится к области металлообработки и касается методов поверхностного упрочнения и повышения износостойкости конструкционных малоуглеродистых сталей путем их науглероживания и электромеханической обработки поверхностного (диффузионного) слоя, в том числе в условиях ремонтного производства. Задачей изобретения является повышение износостойкости обработанной поверхности изделия из малоуглеродистой стали. Предложен способ, включающий диффузионное насыщение поверхностного слоя углеродом путем нанесения графитового слоя, нагрева поверхностного слоя и охлаждения. Одновременно с нанесением графитового слоя осуществляют механическое воздействие рабочим инструментом при давлении инструмента на изделие до 250 МПа и нагрев поверхностного слоя изделия, причем нагрев осуществляют путем пропускания электрического тока силой 450-650 А через зону контакта рабочего инструмента с изделием со скоростью обработки изделия 0,6-2,5 м/мин. Техническим результатом данного изобретения является одновременное ...

Способ поверхностного упрочнения детали из стали

FIELD: machine building; metallurgy. SUBSTANCE: invention relates to the field of metallurgy and machine building, namely to combined methods of part hardening, and can be used at manufacturing of cutting tool for band-saw metal-cutting machine operating in conditions of wear and alternating loads. Method of surface hardening of steel parts includes preliminary surface local doping of coating applied on its surface using laser heating, thermodiffusion saturation of part surface with alloying elements from said coating by heating, maintenance and cooling. Said coating contains chromium and manganese alloying components at ratio of 1:1. Said thermal diffusion saturation is carried out at temperature of 760–850 °C with curing for 2–2.5 hours. After cooling, the steel part is cemented while heating with high-frequency current (HFC) at 1,200–1,250 °C for 20–30 minutes. EFFECT: higher wear resistance and resistance to impact and alternating loads. 1 cl, 1 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 688 011 C1 (51) МПК C23C 12/00 (2006.01) C23C 10/58 (2006.01) C23C 8/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 12/00 (2019.02); C23C 10/58 (2019.02); C23C 8/66 (2019.02) (21)(22) Заявка: 2018134704, 01.10.2018 (24) Дата начала отсчета срока действия патента: 17.05.2019 Приоритет(ы): (22) Дата подачи заявки: 01.10.2018 (45) Опубликовано: 17.05.2019 Бюл. № 14 2447194 C1, 10.04.2012. US 4537793 A1, 27.08.1985. US 5723535 A1, 03.03.1998. (54) Способ поверхностного упрочнения детали из стали (57) Реферат: Изобретение относится к области металлургии детали легирующими элементами из упомянутой и машиностроения, а именно к комбинированным обмазки путем нагрева, выдержку и охлаждение. способам упрочнения детали, и может быть Упомянутая обмазка содержит легирующие использовано при изготовлении режущего компоненты хром и марганец в соотношении 1: инструмента для ленточнопильного 1. Указанное термодиффузионное ...

КАРБЮРИЗАТОР ДЛЯ ЦЕМЕНТАЦИИ СТАЛЬНЫХ ИЗДЕЛИЙ

Карбюризатор относится к химико-термической обработке сплавов и содержит лигнин 88 - 94% и отходы титанового производства - кек 6 - 12%. Смесь обрабатывают щелочью.

СПОСОБ ЦЕМЕНТАЦИИ ДЕТАЛЕЙ ИЗ КОНСТРУКЦИОННЫХ И ИНСТРУМЕНТАЛЬНЫХ СТАЛЕЙ

FIELD: metallurgy. SUBSTANCE: invention relates to metallurgy, in particular, to chemical-thermal treatment of structural and tool steels, and can be used for surface hardening of parts of machines and process equipment of dies, molds, draw plates in machine building and other industries. Cementation paste is applied on part surface, heated with subsequent holding, quenching and tempering. Cementation paste contains powdered components: sodium carbonate Na 2 CO 3 , bentonite, marshalite, soot DG-100 in the following ratio, wt%: sodium carbonate Na 2 CO 3 20–30, bentonite 5–10, marshalite 10–20, soot DG-100 is the rest, wherein the polyethylene-emulsion emulsion is used as a polyvinyl acetate emulsion in amount of 30–50 % of the weight of the powder components, prepared from PVA glue 60 %, 15 % methanol and 25 % water. Paste is applied on the part, dried at temperature of 80–90 °C, then the part is heated to 920–980 °C for 6–8 hours, then hardened and tempered at 200–550 °C for 2 hours. EFFECT: enabling machining of parts of any size and shape, high uniformity of heating of parts and rate of their cementation, as well as high environmental safety of carbonation process. 1 cl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 333 C1 (51) МПК C23C 8/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 8/66 (2020.02) (21)(22) Заявка: 2020106287, 11.02.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 11.02.2020 (45) Опубликовано: 29.07.2020 Бюл. № 22 2 7 2 8 3 3 3 R U (56) Список документов, цитированных в отчете о поиске: RU 2704044 C1, 23.10.2019. RU 2690630 C2, 04.06.2019. RU 2561552 C2, 27.08.2015. RU 2041286 C1, 09.08.1995. CN 1205350 C, 08.06.2005. (54) СПОСОБ ЦЕМЕНТАЦИИ ДЕТАЛЕЙ ИЗ КОНСТРУКЦИОННЫХ И ИНСТРУМЕНТАЛЬНЫХ СТАЛЕЙ (57) Реферат: Изобретение относится к металлургии, в маршалит 10-20, сажа ДГ-100 остальное, при этом частности к химико- ...

Способ поверхностного упрочнения изделий из конструкционных и инструментальных сталей сульфоцианированием

Состав для защиты металла от окисления при нагреве

Твердый карбюризатор для цементации стали

Установка для диффузионной обработки стальных изделий

Использование: обработка стальных изделий. Установка для диффузионной обработки поверхностей стальных изделий содержит нагревательную печь, вспомогательную и рабочую камеры (РК), механизм вращения РК, механизм загрузки-выгрузки в виде подвижного рольганга и квантователя.- РК выполнена в виде сменных контейнеров , имеющих возможность стыковки с вспомогательной камерой. Кантователь выполнен в виде имеющего возможность взаимодействия с контейнером захвата. 3 ил.

SINTEREISEN-FORMTEIL SOWIE VERFAHREN UND SINTERKACHEL ZU SEINER HERSTELLUNG

Stahl fuer Raeumahlen, Raeumnadeln, Stehbolzenbohrer und aehnliche Werkzeuge

Improvements in or relating to the case-hardening of iron or steel

A case-hardening composition comprises pulverized coal 10 lbs., caustic soda 1 lb., barium carbonate 1 lb. and water 12 lbs. The ingredients are mixed together with water to the consistency of treacle and the articles to be hardened are dipped into the viscous compound and the coated articles are then packed into boxes and heated in a muffle or placed direct in the furnace which is then heated to about 900 DEG C.

Process of and compound for the cementation of iron and steel

... 260,986. Bellak, R. Nov. 4, 1925, [Convention date]. Cementation.-In a process for the cementation of iron and steel, the material to be hardened is embedded in comminuted tobacco waste, particularly tobacco dust, and the cementation then effected by heating. The tobacco may be mixed with a small percentage of carbonized products such as charcoal, leather charcoal, bone charcoal, &c. In an example, 70 parts by weight of tobacco dust are mixed with 20 parts of leather charcoal or dried and carbonized blood and 10 parts of charcoal.

SINTERED IRON SHAPED PART AS WELL AS PROCEDURE AND SINTER TILE FOR ITS PRODUCTION

Surface treatment process

A method of hardening a surface of a ferro-alloy object, the method comprising at least partially gasifying a carbon-containing polymer to form a hardening material source; and exposing the object to the hardening material source, such that the hardening material source and the surface of the object react, thereby hardening the surface of the object.

Verfahren zum Einsatzhärten von Eisen und Stahl

Zementier- oder Einsatzverfahren für Eisen und Stahl.

Verfahren zur Einsatzhärtung von Werkstücken aus Eisen und Eisenlegierungen.

Härtemittel für Eisen und Stahl.

Verfahren zum Zementieren und Härten von Werkstücken aus Eisen und Stahl.

Verfahren zur Herstellung eines Einsatzhärtepulvers.

Verfahren zur Herstellung eines Härtemittels für Schmiedeeisen und Stahl.

Härtepräparat für Einsatzöfen.

Zementierungsverfahren

LOW TEMPERATURE COATING METHOD BY A HARD LAYER AND RESULTING PRODUCTS.

СПОСОБ ЦЕМЕНТАЦИИ КОНСТРУКЦИОННОЙ ЛЕГИРОВАННОЙ СТАЛИ

Изобретение относится к области металлообработки и может быть использовано при изготовлении зубчатых колес из конструкционных легированных сталей типа 18ХГТ, 25ХГМ, 20ХНМ, 20ХН2М, 15ХГН2ТА, 20ХН3А и др. для трансмиссий автотракторной техники, эксплуатирующихся при повышенных удельных нагрузках. Изобретение может использоваться при изготовлении элементов подшипников и опор скольжения, сферических и цилиндрических сочленений, а также зубчатых колес, применяемых в сельхозмашиностроении, станкостроении, металлургической промышленности. В заявляемом способе цементации конструкционной легированной стали нагрев стали до температуры цементации осуществляется по режиму, включающему нагрев в интервале 20-680°С со скоростью 6 град/мин, нагрев в интервале аустенитного превращения (680-800°С) со скоростью от 1 до 3,5 град/мин и окончательный нагрев до температуры цементации 1000-1020°С со скоростью 6 град/мин.

A ceramic pipe is inlaid graphite lining and its preparation method

Process for the heat treatment of objects out of metal or metal alloys, and particularly for the hardening of steel and iron

New product of cementing

A method for preparing chips of wood of all species for the cementing of iron and steel

Carburizing process

СОСТАВ КАРБЮРИЗАТОРА ДЛЯ ЦЕМЕНТАЦИИ ДЕТАЛЕЙ ИЗ НИЗКОУГЛЕРОДИСТОЙ СТАЛИ

FIELD: chemistry.SUBSTANCE: invention relates to cementation of steel articles and can be used for surface hardening of parts of machines and mechanisms by their heat treatment in medium of solid carburizer. Composition of carburizer for carburizing articles from low-carbon steel contains, wt. %: iron chips with average size of granules of 0.5 mm - 10, barium carbonate BaCO- 10 and carbon substance - 80. Carbon substance consists of, in wt. %: amorphous carbon - 96.2, crystalline carbon - 2.85, iron - 0.94 and hydrogen - 0.01 and obtained by thermo-catalytic pyrolysis of gas condensate, taken from condensate collector of gas distribution station, under conditions of contact with iron oxide catalyst FeOat temperature of 550 °C, bulk feed rate of volume of 30 ml/min, for 5 hours, with subsequent screening of 50–150 mcm fraction by fractionation of formed mass on molecular sieves.EFFECT: providing required diffusion saturation with carbon, achieving uniform depth of layer along the area of the product and reducing power consumption.1 cl, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 690 630 C2 (51) МПК C23C 8/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 8/66 (2019.02) (21)(22) Заявка: 2017122077, 22.06.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 04.06.2019 (43) Дата публикации заявки: 24.12.2018 Бюл. № 36 (56) Список документов, цитированных в отчете о поиске: RU 2553107 C2, 10.06.2015. RU (45) Опубликовано: 04.06.2019 Бюл. № 16 2 6 9 0 6 3 0 2561552 C2, 27.08.2015. US 4016012 A1, 05.04.1977. US 20100203340 A1, 12.08.2010. (54) СОСТАВ КАРБЮРИЗАТОРА ДЛЯ ЦЕМЕНТАЦИИ ДЕТАЛЕЙ ИЗ НИЗКОУГЛЕРОДИСТОЙ СТАЛИ (57) Реферат: Изобретение относится к области цементации газового конденсата, отобранного с стальных изделий и может быть использовано конденсатосборника газораспределительной для поверхностного упрочнения деталей машин станции, в условиях контакта с железооксидным и механизмов ...

СПОСОБ УПРОЧНЕНИЯ ЭЛЕКТРООСАЖДЕННЫХ ЖЕЛЕЗОХРОМИСТЫХ ПОКРЫТИЙ ЦЕМЕНТАЦИЕЙ

Изобретение относится к области упрочнения электроосажденного на стальные детали железохромистого покрытия цементацией, применяемого для восстановленных поверхностей стальных деталей. Проводят цементацию электроосажденного слоя железохромистого покрытия с содержанием хрома 0,5-3,0% в течение 3-4 ч при температуре 800-900°С с использованием пасты следующего состава, мас.%: газовая сажа ДГ-100 - 40, углекислый барий ВаСО- 20, поливинилацетатная эмульсия (клей ПВА) - 40 и добавлением синтина в количестве 20 капель в минуту в течение всего времени цементации. Повышается микротвердость и износостойкость стальных деталей, восстановленных электроосажденным железохромистым покрытием.

СПОСОБ ВАКУУМНОЙ ЦЕМЕНТАЦИИ СТАЛЬНЫХ ДЕТАЛЕЙ С РЕЗЬБОВЫМИ ОТВЕРСТИЯМИ С ОБЕСПЕЧЕНИЕМ ЗАЩИТЫ ВНУТРЕННЕЙ РЕЗЬБЫ

Изобретение относится к способу вакуумной цементации стальных деталей с резьбовыми отверстиями с обеспечением защиты внутренней резьбы. В резьбовые отверстия стальных деталей по резьбе устанавливают многоразовые медные заглушки. Затем проводят цементацию в вакууме упомянутых стальных деталей и демонтаж указанных заглушек. Обеспечивается сокращение продолжительности технологического процесса изготовления деталей, упрочняемых с помощью цементации, за счет исключения механической обработки после цементации. 4 ил., 1 пр.

СПОСОБ ВОССТАНОВЛЕНИЯ ДИАМЕТРАЛЬНОГО РАЗМЕРА СУШИЛЬНОГО ЦИЛИНДРА БУМАГОДЕЛАТЕЛЬНОГО ОБОРУДОВАНИЯ

Способ восстановления диаметрального размера сушильного цилиндра бумагоделательного оборудования без снятия его с рабочей позиции, включающий подготовку поверхности для нанесения покрытия путем обтачивания и нанесение покрытия электродуговым методом, отличающийся тем, что после обтачивания проводят термообработку поверхности при температуре 100°С в зоне прохождения электродуговой горелки, затем за один проход материалом М470 наносят первый адгезионный слой покрытия твердостью 360÷420 НВ, толщиной 0,1 мм, наносят второй наполнительный слой материалом ST-0002, твердостью 360÷420 НВ, толщина которого соответствует заданной величине приращения диаметрального размера, наносят третий покровный слой толщиной 0,5 мм, материалом ST-0028, твердостью 250÷270 НВ, с учетом припуска 1-2 мм на окончательную обработку, далее покрытие пропитывают составом «Хартц» в охлажденном состоянии, шлифуют и полируют поверхность эластичным инструментом с обеспечением шероховатости Rа, ≤0,63 мкм, промывают обработанную ...

СПОСОБ УПРОЧНЕНИЯ ИЗДЕЛИЙ ИЗ НИЗКОУГЛЕРОДИСТОЙ СТАЛИ

Способ упрочнения изделий из низкоуглеродистой стали, включающий цементацию, охлаждение, двойную закалку и низкотемпературный отпуск, отличающийся тем, что в качестве твердого карбюризатора используют состав из чугунной стружки, карбоната бария и углеродного вещества, которое получено термокаталитическим пиролизом попутного нефтяного или природного газа в условиях контакта с железооксидным катализатором при температуре 360-960°С, объемной скоростью подачи сырья 900-1200 чв течение 2-10 ч, с последующим отсевом фракции 100-250 мкм путем фракционирования образовавшейся массы на молекулярных ситах.

СПОСОБ УСКОРЕННОЙ ЦЕМЕНТАЦИИ СТАЛИ

Способ ускоренной цементации стали, включающий нагрев в насыщающей среде до температуры выше Ас3 и охлаждение до температуры ниже Аr1, отличающийся тем, что способ включает не менее трех циклов, в которых нагрев осуществляется пачками импульсов электромагнитного излучения определенной частоты до температуры 1220±10 К, с последующим охлаждением цементируемых деталей в контейнере с твердым карбюризатором до температуры 910±10 К при скорости нагрева и охлаждения более 1 К/с с выдержкой при экстремальных температурах каждого цикла до 2 мин.

Метод скоростной цементации железа и стали

Способ обработки

Изобретение относится к области металлургии, в частности к упрочняющей обработке прецизионных деталей рефрижераторных компрессоров. Целью изобретения является повышение . состойкости, уменьшение деформации при повышении прочности сердцевины. Поршневые пальцы компрессоров из стали 20X13 после механической обработки .подвергают цементации при температуре 910-920°С в течение 5 ч, охлаждают до 300-350 С вместе с печью, затем повьшают температуру до 910-920°С и проводят повторную цементацию. Закалку проводят сначала с охлаждением на воздухе до 820-850 С, а после в масле. Отпуск осз цествляют при 160- 180 С в течение 3-4 ч. Перед установкой поршневых пальцев в агрегаты проводят притирку супермикронной шкуркой, вскрьшая до металлического блеска рабочую поверхность. Применение способа позволяет повысить ресурс и надежность работы компрессорных установок рефрижераторов. 1 табл. S (Л ...

Устройство для крепления ротационных печатных форм на формном цилиндре печатной машины

Способ упрочнения стальных деталей

Использование: изобретение относится к химико-термической обработке сталыпк деталей, в частности к цементации и последующей локальной поверх- ност юя пластической деформации. Сущность изобретения: на стальное изделие наносят лаковый узор, проводят электролитическое травление мест, не покрытых лаком, наносят медную маску на выступающие участки, после чего проводят цементацию, термообработку и „ поверхностную пластическую ефор- мацию выступающих нецементованньтх участков при комнатной температуре. 2 ил ., 1 табл.

Способ введения графита натиранием при металлизации стальных изделий

Способ химико-термической обработки сталей

Kittartiges Haertemittel zum Zementieren von Eisen und Stahl

Improvements relating to the case-hardening of iron or steel articles

... 476,998. Case-hardening. BAYLISS, WILEY, & CO., Ltd., and BAYLISS, C. T. June 17, 1936, No. 16823. [Class 72] [Also in Group XII] In the case-hardening of iron or steel articles the articles 5 are fed through an aperture 14 in the feed end la of a muffle tube 1 mounted in a furnace 2 and are fed in succession through the tube 1 by a spring-controlled plunger 6 operated by a cam 9 on a shaft 10 through a lever 11. The articles in their progress through the end 1a pass under a receptacle 16 filled with case-hardening material 17 and provided with agitating paddles 18, the material 17 being forced through an aperture 15 in the end 1a to surround the articles 5. When the articles have reached the other end of the tube 1, they pass down a shoot into a quenching bath, or are quenched by jets of liquid. A plurality of tubes 1 with similar feed mechanism for articles for each tube is provided.

CYLINDER LINER AND PROCEDURE FOR YOUR PRODUCTION

HARDENING WEAR PLATES AND THE LIKE

MAGNETIC MATERIALS AND PROCESSES FOR THEIR PRODUCTION

ABSTRACT: IMPROVED MAGNETIC MATERIALS AND PROCESSES FOR THEIR MANUFACTURE A process is provided for modifying the magnetic properties of an intermetallic compound comprising at least iron, or a combination of iron with at least one transition metal, and at least one rare earth element. The process comprises heating the intermetallic compound in a reaction gas containing at least one element of groups IIIA, IVA or VIA of the Periodic Table in the gaseous phase to interstitially incorporate the element or elements of these groups into the crystal lattice of the intermetallic compound. Novel magnetic materials showing easy uniaxial anisotropy, increased spontaneous magnetization and Curie temperatures are produced by the process.

METHOD OF CARBURIZING STRUCTURAL ALLOY STEEL

Aluminum profile extrusion die and machining technology thereof

Preparation method of fastening bolt

Air valve yoke of dcill engine of Dongfeng commercial car

Carburizing process iron and steel

Process for obtaining composite metal parts to different thicknesses of cementing

Novel process for the carburizing objects of iron or steel or alloy steel

Process of hard facing with-the steel

Processing of the soft steel into steel of high impact strength by a new original process of heat treatment

Process of transformation of the very hard steel iron and mild steel and extra-soft

Ferrous alloy cementing

Carburizing method

Carburizing method

Process of cementing of steel and products obtained by this process

Method [...] total conversion of the surface of the iron or steel

CYLINDER JACKET AND METHOD FOR PRODUCING THE SAME

The invention relates to a method for producing a cylinder jacket, comprising the following steps: producing a cylindrical starting product from a steel material having a carbon content of not more than 0.8% by weight and a ferritic or ferritic/pearlitic structure; enriching, by carburization, the surface layer of the inner peripheral surface of the cylindrical starting product with carbon in the form of carbides that are deposited on the grain boundaries; slowly cooling the cylindrical starting product in such a manner that a pearlitic structure having a carbide network is formed in the surface layer; finishing the cylindrical starting product to give a cylinder jacket. The invention also relates to a cylinder jacket produced by said method.

Die reinforcing method and die repairing method

A mixed powder layer is applied by coating to a cavity of a forging die made of an Fe-base alloy, at least to the region of the cavity to be reinforced or repaired, the mixed powder layer comprising the first element powder capable of being converted into a carbide to enhance the hardness of the forging die and the second element powder having a melting point lower than that of the first element powder. Die reinforcing is carried out by forging a work by using a forging die covered with the mixed powder layer and heat-treating the die by utilizing the working heat generated in the forging to thereby make the layer reflow and diffuse the carbide in the die.

СПОСОБ УСКОРЕННОЙ ЦЕМЕНТАЦИИ СТАЛИ

Изобретение относится к химико-термической обработке стальных деталей. Способ включает проведение не менее трех циклов, состоящих из нагрева до температуры выше Ас3 и охлаждения до температуры ниже Ar1. Нагрев и охлаждение проводят в твердом карбюризаторе. Нагрев осуществляют пачками импульсов электромагнитного излучения до температуры 1220±10 К. Охлаждение проводят до температуры 910±10 К. Скорость нагрева и охлаждения составляет более 1 К/с. Выдержка при экстремальных температурах каждого цикла составляет до двух минут. Техническим результатом изобретения является получение на стальных деталях износостойкого покрытия, обладающего повышенной твердостью и прочностью. 1 ил.

СПОСОБ ЭЛЕКТРОМЕХАНИЧЕСКОЙ ОБРАБОТКИ ПОВЕРХНОСТИ ДЕТАЛИ ИЗ МАЛОУГЛЕРОДИСТОЙ СТАЛИ

FIELD: technological processes.SUBSTANCE: invention relates to the field of metalworking, in particular to the machine parts surfaces hardening methods by electromechanical processing under the mass and repair production conditions. Mild steel part electromechanical surface treatment method includes the graphite paste simultaneous delivery to the electrode-tool with the workpiece surface contact area, electrode tool mechanical action on the said part surface and its surface heating by the electric current passing through the electrode tool with the part contact area for the surface with carbon diffusion saturation in the contact zone. Graphite paste feeding is carried out through the fixed electrode-tool hole into the electrode-tool with the part surface contact area under the pressure of 2–3 MPa. Heating is carried out by the electric current of 800–1,000 A passing through the said contact area at an electrode-tool feed rate of 0.4–0.5 m/min along the workpiece surface.EFFECT: enabling wear resistance, efficiency and the low-carbon steels parts electromechanical processing quality.1 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 667 948 C1 (51) МПК C23C 8/66 (2006.01) B23P 6/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 8/66 (2006.01); B23P 6/00 (2006.01) (21)(22) Заявка: 2017113841, 20.04.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 20.04.2017 (45) Опубликовано: 25.09.2018 Бюл. № 27 2 6 6 7 9 4 8 R U (56) Список документов, цитированных в отчете о поиске: RU 2197557 C2, 27.01.2003. RU 2530432 C2, 10.10.2014. RU 2352444 C2, 20.04.2009. US 6579567 B1, 17.06.2003. JP 5305820 B2, 02.10.2013. (54) СПОСОБ ЭЛЕКТРОМЕХАНИЧЕСКОЙ ОБРАБОТКИ ПОВЕРХНОСТИ ДЕТАЛИ ИЗ МАЛОУГЛЕРОДИСТОЙ СТАЛИ (57) Реферат: Изобретение относится к области диффузионного насыщения поверхности металлообработки, в частности к методам углеродом в зоне контакта. Подачу ...

СПОСОБ ОБРАБОТКИ ИЗДЕЛИЙ ИЗ МАЛОУГЛЕРОДИСТЫХ СТАЛЕЙ

Изобретение относится к машиностроению, а именно к термической обработке, в частности к цементации при упрочнении изделий из малоуглеродистых сталей. Для ускорения и упрощения цементации при одновременной закалке, а также упрощения техники безопасности в способе обработки изделий из малоуглеродистых сталей, включающем цементацию, осуществляемую нагревом изделия в контакте с углеродсодержащей средой путем действия концентрированного потока энергии и охлаждение, на изделие, покрытое слоем карбюризатора, действуют серией высокочастотных импульсов при непрерывной протяжке изделия под индуктором, при этом длительность импульсов обработки и пауз составляет 0,04 - 0,08 с и 0,03- 0,05 с, удельная мощность в импульсе 20 - 40 КВт/см, скорость перемещения изделия 10 - 30 мм/с, а число импульсов обработки каждого участка изделия 3 - 5. Способ позволяет повысить скорость диффузионного насыщения поверхностных слоев низкоуглеродистых сталей в несколько раз, обеспечивая высокое качество изделий, делает ...

СПОСОБ ОБРАБОТКИ ИЗДЕЛИЙ ИЗ МАЛОУГЛЕРОДИСТЫХ СТАЛЕЙ

Изобретение относится к машиностроению, а именно к термической обработке, в частности к цементации при упрочнении изделий из малоуглеродистых сталей. Цель изобретения - ускорение и упрощение цементации при одновременной закалке, а также упрощение техники безопасности. Способ обработки изделий из малоуглеродистых сталей включает цементацию, осуществляемую нагревом изделия в контакте с углеродсодержащей средой путем действия концентрированного потока энергии, и охлаждение. На изделие, покрытое слоем карбюризатора, действуют серией высокочастотных импульсов при непрерывной протяжке изделия под индуктором, при этом длительность импульсов обработки и пауз составляет 0,04 - 0,08 и 0,03 - 0,05 с, удельная мощность в импульсе 20 - 40 кВт/см2, скорость перемещения изделия 10 - 30 мм/с, а число импульсов обработки каждого участка изделия 3 - 5. 2 табл.

Способ упрочнения стали с применением комбинированной технологии

FIELD: military equipment.SUBSTANCE: invention relates to military equipment and can be used in the manufacture of body armor, in particular in armored structures, consisting of several layers and designed to protect against small arms bullets. The method for hardening a steel sheet of armor includes a preliminary deformation effect by shock waves by means of static-impulse treatment twice in different directions, carrying out double-sided carburizing in a solid carburizer at a temperature of 930°C for 7 hours, carrying out two-stage hardening. At the first stage, quenching is carried out at a temperature of 930°C for 30 minutes. At the second stage, quenching is carried out at a temperature of 790°C for 30 minutes with cooling in oil. Distribution is carried out at a temperature of 180°C.EFFECT: provides a hardened structure, including cemented surface layers and a heterogeneously hardened core throughout the thickness of the steel armor sheet.4 cl, 2 dwg, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 750 602 C1 (51) МПК C21D 1/78 (2006.01) F41H 5/04 (2006.01) C23C 8/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C21D 1/78 (2021.02); F41H 5/04 (2021.02); C23C 8/66 (2021.02) (21)(22) Заявка: 2020126286, 06.08.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 06.08.2020 (45) Опубликовано: 29.06.2021 Бюл. № 19 2 7 5 0 6 0 2 R U (54) Способ упрочнения стали с применением комбинированной технологии (57) Реферат: Изобретение относится к военной технике и 7 ч, осуществление двухступенчатой закалки. На может быть использовано при изготовлении первой ступени закалку проводят при средств бронезащиты, в частности в броневых температуре 930°С в течение 30 мин. На второй конструкциях, состоящих из нескольких слоев и ступени закалку осуществляют при температуре предназначенных для защиты от пуль 790°С в течение 30 мин с охлаждением в масле. стрелкового ...

Способ упрочнения деталей из инструментальных и конструкционных сталей в цементуемой среде

Изобретение относится к металлургии, в частности к химико-термической обработке конструкционных и инструментальных сталей, и может быть использовано для поверхностного упрочнения деталей машин и технологической оснастки в машиностроительной, металлургической, химической, инструментальной и других отраслях промышленности. Готовят пасту, содержащую следующие компоненты, мас.%: углекислый барий ВаСО3– 20-30, феррохром ФХ800А – 15-20, хлористый аммоний NH4Cl – 2-4, бентонит 5-10, маршалит – 10-20, сажа ДГ-100 – остальное. В качестве пастообразователя используют нитроцеллюлозный лак НЦ222 – 20-30% от массы порошкообразных компонентов. Наносят пасту на деталь, сушат при температуре 70-80°С. Затем деталь нагревают в нейтральной соляной ванне при следующем соотношении компонентов, мас.%: NaCl - 35, Na2CO3- 35, NaOH - 30, при температуре 580-680°C с выдержкой при этой температуре в течение 2-6 часов. Проводят нагрев в нейтральной соляной ванне при следующем соотношении компонентов, мас.%: NaCl - ...

СПОСОБ И СОСТАВ ДЛЯ КАРБОХРОМИРОВАНИЯ СТАЛЬНЫХ ИЗДЕЛИЙ

... 1. Способ карбохромирования стальных изделий, заключающийся в последовательном проведении процессов цементации и хромирования, отличающийся тем, что обработку осуществляют в псевдоожиженном слое. 2. Способ карбохромирования стальных изделий по п. 1, отличающийся тем, что цементацию проводят в твердом кабюризаторе при 930oС в течение 120-180 мин, а хромирование - при 950oС в течение 60-120 мин. 3. Состав для цементации стальных изделий по п. 1, включающий древесный уголь, отличающийся тем, что он содержит исходные вещества в следующем соотношении, мас. %: древесный уголь - 5-20, вода - 5-10, корунд - остальное. 4. Состав для хромирования стальных изделий по п. 1, включающий металлический хром - 1-10, хлористый аммоний - 0,01-0,1, корунд - остальное.

Паста для цементации изделий из низкоуглеродистых сталей

Verfahren zur Modifizierung von Magnetmaterialien und Magnetmaterialien daraus.

Verfahren zur Modifizierung von Magnetmaterialien und Magnetmaterialien daraus.

Annealing and hardening high and low carbon steels and the like

... 182,825. Parr, F. J., Mawer, J., and Fainton, W. Jan. 3, 1921. Annealing; case-hardening.-A material for use in annealing or hardening steel comprises dried plants of the bean and pea variety and powdered charcoal. Articles to be hardened are embedded in the material in an airtight box and heated to a temperature of 900‹ to 950‹ C. for a period of 1 to 4 hours according to the depth of hardness required and then cooled in oil or water. Articles to be annealed are heated under the same conditions and left in the box to cool.

Improvements in or relating to methods of carbonising metals

... 442,878. Carbonizing metals; producing oxide surfaces. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Eddison, C. ; 63, North Walnut Street, East Orange, New Jersey, U.S.A.) Aug. 16, 1934, No. 23669. Convention date, Aug. 16, 1933. [Classes 72 and 82 (ii)] In a method of carbonizing metals such as iron, copper, nickel and tungsten, the surface of the metal is coated with a mixture containing finely divided carbon and a carbonaceous binder and the coated metal heated at a temperature below the formation temperature of carbides of the metal to decompose the binder. The surface of the metal is roughened, e.g. by etching sand or steel blasting, and, if desired, oxidized, before coating. Binders such as palmitic acid and lard oil may be used, and these may be dissolved in a hydrocarbon solvent such as alcohol and formed into a solution with lamp black, or with which the metal is sprayed or painted or the binder may be mixed with the lamp black ...

Improvements in connection with the Treatment of Steel or Iron Surfaces for Hardening and otherwise and in Apparatus therefor.

... 20,917. Simpson, W. S. Sept. 21. Cementation.-Iron or steel surfaces are hardened, toughened, or otherwise modified by fusing the surface electrically in a vacuum and introducing metals or metallic or carbon compounds into the molten surface. Ferro-carbon, ferro-manganese, nickel, chromium, molybdenum, tungsten, or vanadium may be introduced in this way, and, by a series of operations a plate or other article may be made to consist of several layers of metal of different properties. The apparatus comprises a carriage 7 adapted to be traversed in two directions at right-angles under a number of independent adjustable electrodes 31 depending from a cover 23. The carriage 7 supports the article 8 to be treated, which is suitably packed to prevent loss of molten metal over the edges. Means are provided for raising and lowering the cover 23 and for exhausting the chamber, and for cleaning sight-holes 27. The under surface of the article may be cooled by water, and the cover 23 may also be sprayed ...

Improvements relating to the carburizing of iron and steel

In a process of carburizing iron and steel the carburizing agent comprises a solid carbonaceous material without energizer mixed with the residue from a previous carburization in which an energizer was present The first carburizing agent of a series of processes is one containing an energizer and to the residue from this process is added charcoal, or coke, or a mixture of both, in amount, for example, 10 per cent to replenish the agent. It may be necessary at long intervals to add to the agent a small amount of energizer.

Improved process for the cementation of iron and steel

... 143,746. Luttenschlager, M. L. M. July 2, 1919. Cementation; hardening.-A mixture used in the cementation of iron and steel at a temperature of 700-800‹ C. contains potassium ferro and ferri cyanides, potassium chromate or bichromate, and charcoal. Large articles are preferably preheated before insertion into the mixture. The metal may afterwards be hardened in a bath containing sea-salt, together with ammonium chloride or caustic soda, or both.

Improvements in Cementation Furnaces.

... 24,635. Soc. Anon. Italiano Gio Ansaldo, Armstrong, & Co. Aug. 30, [Convention date]. Drawings to Specification. Cementation.-Articles to be cemented are packed with charcoal into a retort through which carbonizing gases are passed.

Improved Process for the Cementation of Articles of Iron, Steel, and Alloys of Steel.

... 11,839. Marks, E. C. R., [Soc. Anon. Italiana Gio. Ansaldo, Armstrong, & Co.]. May 12. Cementation.-For cementing articles of iron, steel, or steel alloy, the articles are heated to between 900 and 1100‹ C. in the presence of carbon-dioxide gas and non-impregnated carbon in a state of comparatively fine subdivision. Preferably, the articles are placed in layers separated by granular charcoal in a retort-like chamber through which a current of carbon dioxide slowly circulates. The articles may be fixed on a shaft rotating in the chamber. To produce cementation of a lower carbon percentage but great depth, air may be mixed with the carbon dioxide; or, after a time, enough of the carbon may be withdrawn to uncover the articles, the heating and the gaseous current being continued. If a higher percentage of carbon is required, gaseous or liquid hydrocarbons may be supplied with the carbon dioxide. Air and hydrocarbons may be added to the carbon dioxide supplied simultaneously or in succession ...

Improvements in and relating to Case Hardening or Cementation Materials.

... 185. Rudge - Whitworth, Ltd., and Heathcote, H. L. Jan. 3. Case-hardening.-A material free from powder and of a porous structure for case-hardening or cementing iron or steel consists of wood or leather charcoal together with a fusible substance such as potassium or sodium carbonate or caustic soda or potash. The charcoal freed from dust may be impregnated with a solution of the fusible substance, or may be coated with powdered substance with the aid of oil. After use, the material may be re-used with the addition of fresh material. The material may be cold or hot when applied to the articles to be treated.

SINTERED IRON SHAPED PART AS WELL AS PROCEDURE AND SINTER TILE FOR ITS PRODUCTION

BEARING RACE

METHOD, EQUIPMENT, AND MATERIAL FOR CREATING A SURFACE ON A METAL

The invention relates to a method for surface treating the surface (11') of a metal. The surface treatment is performed in a surfacing chamber (33), using a surfacing material (10), which is formed of one or more compounds and possible additives, and in which: the surfacing material (10) is brought to a principally gaseous state; the surfacing material (10) is led to the chamber (33); and the surfacing amterial (10) is permitted to react with the metal surface (11') being treated. The metal surface (11') being treated is subjected in the chamber (33) to a passing flow of the surfacing material (10), and in which the said surfacing material (10) comprises compound arising in dry distillation of deciduous-wood. The invention also relates to the equipment and surfacing material used in the method.

METHOD, EQUIPMENT, AND MATERIAL FOR CREATING A SURFACE ON A METAL

The invention relates to a method for surface treating the surface (11') of a metal. The surface treatment is performed in a surfacing chamber (33), using a surfacing material (10), which is formed of one or more compounds and possible additives, and in which: the surfacing material (10) is brought to a principally gaseous state; the surfacing material (10) is led to the chamber (33); and the surfacing amterial (10) is permitted to react with the metal surface (11') being treated. The metal surface (11') being treated is subjected in the chamber (33) to a passing flow of the surfacing material (10), and in which the said surfacing material (10) comprises compound arising in dry distillation of deciduous-wood. The invention also relates to the equipment and surfacing material used in the method.

Wearing-resistant rod piece for railway switch and making method thereof

The present invention relates to a railway switch member bar with wear-resisting property and its manufacture method. It is characterized by that it is identical to general switch member bar in raw material and manufacture steps, and it is different from general switch member bar in that the surface of phi 22 pinhole is undergone the process of carbonization treatment to make its surface possess a carburized layer. Said invented member bar features wear-resisting property and long service life.

Process of cementing for iron and its alloys

Process improved for the hardening of surface and case-hardening powder for this hardening

New method of rapid carburizing steels, irons, cast irons, andc.

Axle for vehicle and its assembly

Method for manufacturing tools for working metals and other materials

METHOD OF MANUFACTURING A HELICAL GEAR

METHOD OF MANUFACTURING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

In a method of manufacturing a grain-oriented electrical steel sheet including a nitriding treatment (step S) and adopting so-called “low-temperature slab heating”, the finish temperature of finish rolling in hot rolling (step S) is set to 950° C. or below, the cooling is started within 2 seconds after completion of the finish rolling, and a steel strip is coiled at 700° C. or below. The cooling rate over the duration from the end of finish rolling to the start of coiling is set to 10° C./sec or above. In annealing (step S) of the hot-rolled steel strip, the heating rate in the temperature range from 800° C. to 1000° C. is set to 5° C./sec or above. 1. A method of manufacturing a grain-oriented electrical steel sheet comprising:heating a silicon steel slab at 1280° C. or below, the silicon steel slab containing, in % by mass, Si: 0.8% to 7%, and acid-soluble Al: 0.01% to 0.065%, with a C content of 0.085% or less, a N content of 0.012% or less, a Mn content of 1% or less, and a S equivalent Seq., defined by “Seq.=[S]+0.406×[Se]” where [S] being S content (%) and [Se] being Se content (%), of 0.015% or less, and the balance of Fe and unavoidable impurities;hot rolling the heated silicon steel slab so as to obtain a hot-rolled steel strip;annealing the hot-rolled steel strip so as to obtain an annealed steel strip;cold rolling the annealed steel strip so as to obtain a cold-rolled steel strip;decarburization annealing the cold-rolled steel strip so as to obtain a decarburization-annealed steel strip in which primary recrystallization is caused;coating an annealing separating agent on the decarburization-annealed steel strip; andfinish annealing the decarburization-annealed steel strip so as to cause secondary recrystallization, whereinthe method further comprises performing a nitriding treatment in which a N content of the decarburization-annealed steel strip is increased between start of the decarburization annealing and occurrence of the secondary recrystallization ...

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 ...

CHEMICAL CONVERSION TREATMENT AGENT FOR SURFACE TREATMENT OF METAL SUBSTRATE, AND SURFACE TREATMENT METHOD OF METAL SUBSTRATE USING SAME

A chemical conversion treatment agent for surface treatment of a metal substrate, comprising: 19.-. (canceled)11. The chemical conversion treatment agent according to claim 10 , whereinthe silane coupling agent (A) is selected from the group consisting of 3-aminopropyltriethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropylmethyldiethoxysilane, 3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltriethoxysilane and N-(2-aminoethyl)-3-aminopropyldimethoxysilane.12. The chemical conversion treatment agent according to claim 10 , whereinZ is a member selected from the group consisting of a 3,4-epoxycyclohexyl group, a phenyl group, a cyclohexyl group and a styryl group.13. The chemical conversion treatment agent according to claim 10 , further comprising at least one member selected from the group consisting of aluminum claim 10 , magnesium claim 10 , zinc claim 10 , calcium claim 10 , strontium claim 10 , indium claim 10 , tin claim 10 , copper and silver.14. The chemical conversion treatment agent according to claim 10 , whereinthe co-condensate of the silane coupling agent (A) and the silane coupling agent (B) is a co-condensate obtained by polymerizing a mixture of the silane coupling agent (A) and the silane coupling agent (B) in a mass ratio ((A):(B)) which is in a range from 1:9 to 18:1.15. The chemical conversion treatment agent according to claim 10 , whereina content of the metal element is 50 to 1000 ppm in terms of the element.16. The chemical conversion treatment agent according to claim 10 , whereina total content of the silane coupling agent (A) and the silane coupling agent (B), including the co-condensate, is 200 ppm or more in terms of solid content concentration.17. The chemical conversion treatment agent according to claim 10 , whereinthe fluorine element is partially present as free fluorine ions in the chemical conversion ...

Steel Part and Method for Manufacturing the Same

A plurality of layers are laminated on at least part of the member under treatment made of steel, the plurality of layers having carbon concentrations higher than that of the member under treatment and 1.0 wt. % or less, the carbon concentration of an outermost layer of the plurality of layers being the highest. A method for manufacturing a steel part, including spraying powder containing carbon on at least part of an member under treatment made of steel so as to form a first layer having a carbon concentration higher than that of the member under treatment and spraying powder containing carbon on at least part of the first layer so as to form a second layer having a carbon concentration higher than that of the first layer. Carbon concentrations of a plurality of layers including the first layer and the second layer are 1.0 wt. % or less. 1. A steel part having a member under treatment made of steel , a plurality of layers being laminated on at least part of the member under treatment , the plurality of layers having carbon concentrations higher than that of the member under treatment and 1.0 wt. % or less , the carbon concentration of an outermost layer of the plurality of layers being the highest.2. The steel part according to claim 1 ,wherein the plurality of layers are three layers or more.3. The steel part according to claim 1 ,wherein the member under treatment has an area in which the plurality of layers are laminated and an area in which the plurality of layers are not laminated.4. The steel part according to claim 1 ,wherein the plurality of layers includes a first layer and a second layer laminated successively on the member under treatment, the first layer having an area in which the second layer is laminated and an area in which the second layer is not laminated.5. A method for manufacturing a steel part claim 1 , comprising:spraying powder containing carbon on at least part of an member under treatment made of steel so as to form a first layer having a ...

STEEL FOR MANUFACTURING CEMENTED STEEL PARTS, CEMENTED STEEL PARTS MADE WITH SAID STEEL AND METHOD FOR MANUFACTURING SAME

Steel for manufacturing cemented steel parts, characterized in that the composition thereof in weight percentages is: 1. Steel for manufacturing cemented parts , wherein its composition in weight percentages is:0.1%≦C≦0.15%;0.8% ≦Mn≦2%;1%≦Cr≦2.5%;0.2%≦Mo≦0.6%;trace elements≦Si≦0.35%;trace elements≦Ni≦0.7%,trace elements≦B≦0.005%;trace elements≦Ti≦0.1%,trace elements≦N≦0.01% if 0.0005%≦B≦0.005%, and trace elements≦N≦0.02% if trace elements≦B≦0.0005%;trace elements≦Al≦0.1%;trace elements≦V≦0.3%;trace elements≦P≦0.025%;trace elements≦Cu≦1%, preferably≦0.6%;trace elements≦S≦0.1%;the remainder being iron and impurities resulting from production.2. The steel according to claim 1 , wherein its O content is less than or equal to 30 ppm.3. A cemented steel part claim 1 , made in a steel having the composition according to and having undergone cementation.4. A cemented steel part claim 2 , made in a steel having the composition according to and having undergone cementation.5. The cemented steel part according to claim 3 , wherein it is a drill bit.6. The cemented steel part according to claim 4 , wherein it is a drill bit.7. A method for manufacturing a cemented steel part claim 4 , wherein:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a blank of said part is prepared in a steel according to , and it is shaped by forging;'}and cementation is practiced on said blank.8. The method according to claim 7 , wherein the cementation is carried out at atmospheric pressure claim 7 , and the succession of steps during the cementation is the following:heating up to the temperature of the enrichment level;enrichment level at a temperature from 900 to 980° C. for 3 to 20 hrs and at a carbon potential comprised between 0.8 and 1.2%;diffusion at a temperature from 820 to 880° C. at a carbon potential comprised between 0.6 and 0.8%, with a treatment period from 1 to 3 hrs;quenching in oil at a temperature of less than or equal to 160° C.; andtempering at a temperature comprised between ...

METHOD & STEEL COMPONENT

A method for heat treating a steel component, which comprises the steps of: (a) carburizing the steel component with a carbon potential above 1.0, (b) carburizing the steel component with a carbon potential above 0.6, (c) quenching the steep component, and (d) subjecting the steel component to a bainitic treatment. 1. A method for heat treating a steel component , the method comprising the steps of:a) carburizing the steel component with a carbon potential above 1.0,b) carburizing the steel component with a carbon potential above 0.6,c) quenching the steel component, andd) subjecting the steel component to a bainitic treatment.2. The method according to claim 1 , wherein the step of carburizing the steel component with a carbon potential above 1.0 is carried out with a carbon potential of 1.0-1.4.3. The method according to claim 1 , wherein the step of carburizing the steel component with a carbon potential above 0.6 is carried out with a carbon potential of 0.6-1.2.4. The method according to claim 1 , wherein at least one of the step of carburizing the steel component with a carbon potential above 1.0 and the step of carburizing the steel component with a carbon potential above 0.6 is carried out at a temperature of 940-1000° C.5. The method according to claim 1 , wherein the step of subjecting the steel component to a bainitic treatment is carried out at a temperature of 200-240° C.6. The method according to claim 1 , wherein the said steel component comprises steel with a carbon content of 0.1 to 0.4 weight % claim 1 , such as 18CrNiMo7-6 steel.7. The method according to claim 1 , the method further comprising steps of e) cooling the steel component and f) tempering the steel component at a temperature of 160-240° C.8. The method according to claim 1 , wherein the steel component comprises or constitutes one of a rolling element claim 1 , a roller claim 1 , or a steel component for an application in which is subjected to alternating Hertzian stresses.9. The ...

METHOD OF SURFACE TREATMENT FOR GEAR FOR STRAIN WAVE REDUCTION GEAR MECHANISM

A method of treating a surface of a gear for a strain wave reduction gear mechanism. The method includes: taking a gear for a strain wave reduction gear mechanism as a workpiece, the gear is formed from a machine structural steel containing at least 0.2% carbon and being subjected to heat treatment after having been machined; performing a first process in which carbide particles are ejected against a surface of the workpiece so as to remove machining marks on the surface of the workpiece and so as to cause elemental carbon in the carbide particles to diffuse and permeate into the surface of the gear; and after the first process, performing a second process in which spherical particles are ejected against a surface of the workpiece for increasing an internal compressive residual stress of the gear surface by a magnitude of at least −50 MPa. 1. A method of treating a surface of a gear for a strain wave reduction gear mechanism , the method comprising:taking a gear for a strain wave reduction gear mechanism as an object to be treated, the gear being formed from a machine structural steel containing at least 0.2% carbon and being subjected to heat treatment after having been machined;performing a first process in which carbide particles with a particle diameter of from 220 grit to 3000 grit particle size are ejected against a surface of the object to be treated at an ejection velocity of at least 50 m/sec or at an ejection pressure of at least 0.1 MPa so as to remove machining marks generated on the surface of the object to be treated during the machining and so as to cause elemental carbon in the carbide particles to diffuse and permeate into the surface of the gear; andafter the first process, performing a second process in which spherical particles are ejected against a surface of the object to be treated at an ejection pressure of at least 0.2 MPa so as to increase an internal compressive residual stress of the gear surface by a magnitude of at least −50 MPa, the ...

Surface Treatment Process

A method of hardening a surface of a ferro-alloy object, the method comprising at least partially gasifying a carbon-containing polymer to form a hardening material source; and exposing the object to the hardening material source, such that the hardening material source and the surface of the object react, thereby hardening the surface of the object. 1. A method of hardening a surface of a ferro-alloy object , the method comprising:at least partially gasifying a carbon-containing polymer to form a hardening material source; andexposing the object to the hardening material source, such that the hardening material source and the surface of the object react, thereby hardening the surface of the object.2. A method as claimed in claim 1 , wherein the method includes heating the object prior to exposing the object to the hardening material source.3. A method as claimed in claim 1 , wherein the method includes simultaneously heating the object and forming the hardening material source.4. A method as claimed in claim 1 , wherein the polymer is at least partially gasified in a chamber that is separate to claim 1 , but in fluid communication with claim 1 , the object.5. A method as claimed in claim 1 , wherein the method includes heating the object and contacting the carbon-containing polymer with the heated object such that the carbon-containing polymer at least partially gasifies.6. A method as claimed in claim 1 , wherein the hardening material source and the surface of the object react by diffusion.7. A method as claimed in claim 1 , wherein the method includes selecting the duration for which the object is exposed to the hardening material source claim 1 , to control a resulting thickness of the hardened surface.8. A method as claimed in claim 1 , wherein a temperature differential exists between the object and the polymer.9. (canceled)10. A method as claimed in claim 1 , wherein the carbon-containing polymer comprises a metallized carbon-containing polymer claim 1 , and ...

PROCESS FOR OBTAINING A PISTON RING AND INTERNAL COMBUSTION ENGINE

A process for obtaining a piston ring may include providing a piston ring of an internal combustion engine and submitting a surface of the piston ring to a laser surface heat treatment. The surface may be a sliding surface of the piston ring. The piston ring may be a one piece piston ring and/or a scrapper ring. 1. A process for obtaining a piston ring comprising:providing a preformed ring for an internal combustion engine; andsubmitting a sliding surface of said ring to a laser surface heat treatment.2. The process as claimed in claim 1 , wherein said sliding surface is a contact surface of the ring with a cylinder liner.3. The process as claimed in claim 1 , wherein providing said ring includes providing a one piece scraper ring having a U-shaped profile with respect to a cross-section thereof.4. The process as claimed in claim 3 , wherein said sliding surface is at least one surface defined by the U-shaped profile and is configured to maintain contact with a cylinder liner of the internal combustion engine.5. The process as claimed in claim 3 , wherein said sliding surface includes two surfaces provided by the U-shaped profile and configured to contact a cylinder liner of the internal combustion engine.6. The process as claimed in claim 1 , wherein said ring is composed of a carbon steel.7. The process as claimed in claim 1 , wherein said ring is composed of alloyed steel including Cr claim 1 , Mo claim 1 , and Nb.8. The process as claimed in claim 1 , wherein submitting said sliding surface to said laser surface heat treatment includes quenching via a laser beam.9. The process as claimed in claim 1 , wherein submitting said sliding surface to said laser surface heat treatment includes case hardening said sliding surface via a laser beam.10. The process as claimed in claim 1 , further comprising tempering said ring after submitting said sliding surface to said laser surface heat treatment.11. The process as claimed in claim 1 , further comprising claim 1 , prior ...

Working surface, and system and method for production thereof

A mechanical device including: (a) a metal workpiece having a working surface for bearing a load, the working surface including a nanometric, adhesive, solid film containing carbon atoms, the film being intimately bonded to the workpiece, wherein the film is intimately bonded to the workpiece on one face of the film, and wherein an opposing face of the film is exposed, for contacting with a lubricant, (b) a contact surface, disposed substantially opposite the working surface; (c) a lubricant, disposed between the working surface and the contact surface, and (d) a mechanism for causing a relative movement between the working surface and the contact surface.

Plasma etch apparatus with conductive coating on inner metal surfaces of chamber to provide protection from chemical corrosion

An improved plasma etching apparatus is disclosed comprising an etch chamber having inner metal surfaces with a conductive coating formed thereon which is capable of protecting such inner metal surfaces from chemical attack by reactant gases such as halogen-containing gases used in said chamber during plasma etching processes. In a preferred embodiment, at least about 0.2 micrometers of a carbon coating is formed on the inner metal surfaces of the etch chamber by a plasma-assisted CVD process using a gaseous source of carbon and either hydrogen or nitrogen or both.

Heat treatment method for annular gear

본 발명은 자동변속기용 애뉼러스 기어의 열처리 방법에 관한 것으로서, 더욱 상세하게는 기존의 가스침탄법과 달리, 진공침탄 및 다이나믹 가스소입을 포함하는 열처리를 실시하여, 애뉼러스 기어의 열변형을 감소시킬 수 있도록 한 자동변속기용 애뉼러스 기어의 열처리 방법에 관한 것이다. The present invention relates to a heat treatment method of an annular gear for an automatic transmission, and more particularly, unlike the conventional gas carburizing method, a heat treatment including vacuum carburizing and dynamic gas quenching is performed to reduce thermal deformation of the annular gear. The present invention relates to a heat treatment method of an annular gear for an automatic transmission. 이를 위해, 본 발명은 애뉼러스 기어를 900℃~980℃에서 1시간 30분 동안 진공침탄 열처리하는 공정과; A1 변태온도의 40~100℃ 위의 온도까지 20℃/분의 냉각속도로 제어 냉각을 실시하는 공정과; 제어 냉각된 제품을 20~40분 동안 상온 유지시키는 공정과; 열변형을 감소시키기 위한 다단계 가스소입을 실시하는 공정; 을 포함하여 이루어진 것을 특징으로 하는 자동변속기용 애뉼러스 기어의 열처리 방법을 제공한다. To this end, the present invention comprises the steps of vacuum carburizing heat treatment for 1 hour 30 minutes at 900 ℃ ~ 980 ℃ gear gear; Performing controlled cooling at a cooling rate of 20 ° C / min to a temperature above 40-100 ° C of the A1 transformation temperature; Maintaining the controlled cooled product at room temperature for 20 to 40 minutes; Performing multistage gas quenching to reduce thermal strain; It provides a heat treatment method of the annular gear for an automatic transmission comprising a. 애뉼러스 기어, 열처리 방법, 진공 침탄, 다단계 가스 소입 Annular gear, heat treatment method, vacuum carburizing, multi-stage gas quenching

Verfahren und Einrichtung zum Zementieren von Eisen und Eisenlegierungen

Способ восстановлени прессового инструмента

Process for making nitrided elongated parts

Surface hardening method of steel part

FIELD: machine building; metallurgy.SUBSTANCE: invention relates to the field of metallurgy and machine building, namely to combined methods of part hardening, and can be used at manufacturing of cutting tool for band-saw metal-cutting machine operating in conditions of wear and alternating loads. Method of surface hardening of a steel part includes preliminary surface local doping from a coating applied on its surface using heating, thermodiffusion saturation of part surface with alloying elements from said coating by heating, maintenance and cooling. Said coating contains alloying components in form of chromium, manganese and titanium at the following ratio, wt %: Cr – 48–49, Mn – 48–49, Ti – 2–4, wherein local doping from said coating is carried out by heating with a plasma arc in a protective atmosphere of argon, and said thermal diffusion saturation is carried out at temperature of 760–850 °C with curing for 2–2.5 hours. After cooling, the steel part is cemented while heating with high-frequency current (HFC) at 1,200–1,250 °C for 20–30 minutes.EFFECT: higher wear resistance and resistance to impact and alternating loads.1 cl, 1 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 688 009 C1 (51) МПК C23C 12/00 (2006.01) C23C 10/58 (2006.01) C23C 8/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 12/00 (2019.02); C23C 10/58 (2019.02); C23C 8/66 (2019.02) (21)(22) Заявка: 2018134702, 01.10.2018 (24) Дата начала отсчета срока действия патента: 17.05.2019 Приоритет(ы): (22) Дата подачи заявки: 01.10.2018 (45) Опубликовано: 17.05.2019 Бюл. № 14 2 6 8 8 0 0 9 R U (56) Список документов, цитированных в отчете о поиске: RU 2428503 C2, 10.09.2011. RU 2415964 C1, 10.04.2011. RU 2447194 C1, 10.04.2012. US 4537793 A1, 27.08.1985. (54) Способ поверхностного упрочнения детали из стали (57) Реферат: Изобретение относится к области металлургии обмазка содержит легирующие компоненты в и машиностроения, а именно к ...

Method for graphitization of low-carbon steels combined with preliminary cementation in the temperature of polymorphous transformation temperatures

FIELD: technological processes. SUBSTANCE: invention relates to thermal and chemical-thermal treatment of steel parts, namely to processes of graphitization and heat treatment of materials by means of annealing in medium of carburizer. Method of graphitizing parts from low-carbon steels involves heating parts in medium of carburizer to temperature of 20–40 °C above Ac 3 point and holding at this temperature for 0.2–2.0 hours. Said heating and holding are performed to obtain an austenite structure and formation of the required carbonized layer depth, and then sublinging to the temperature of polymorphous transformation of Ar 3 -Ar 1 with subsequent exposure at this temperature for 6.0–8.0 hours, at which final formation of the cemented layer and its graphitization to the required depth is carried out. EFFECT: obtaining on the steel parts a surface graphitized layer of greater depth, cutting and simplifying the processing process. 1 cl, 5 dwg, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 695 858 C1 (51) МПК C23C 8/66 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 8/66 (2019.05) (21)(22) Заявка: 2019111750, 17.04.2019 (24) Дата начала отсчета срока действия патента: Дата регистрации: Приоритет(ы): (22) Дата подачи заявки: 17.04.2019 (45) Опубликовано: 29.07.2019 Бюл. № 22 (54) Способ графитизации низкоуглеродистых сталей, совмещенный с предварительной цементацией в области температур полиморфного превращения (57) Реферат: Изобретение относится к термической и глубины науглероженного слоя, а затем проводят химико-термической обработке стальных деталей, подстуживание до температуры полиморфного а именно к процессам графитизации и превращения Ar3-Ar1 с последующей выдержкой термической обработки материалов посредством при данной температуре в течение 6,0-8,0 ч, при отжига в среде карбюризатора. Способ которой осуществляют окончательное графитизации деталей из низкоуглеродистых формирование цементованного ...

Method for low-temperature cementation (ltc) of steel

FIELD: technological processes. SUBSTANCE: invention relates to chemical-thermal treatment, namely to cementation processes, and can be used in machine building, automotive industry and other industries for surface hardening of parts made from low-carbon structural steels. Method of steel parts carburizing includes heating of parts in carburizer to temperature equal to or higher than Ac 3 , with holding at said temperature and cooling. Holding at temperature higher than Ac 3 is carried out until complete austenitic conversion, and cooling – to the temperature of polymorphic conversion from the range of [(Ar 3 +50)…(Ar 1 -50)] °C is cured at said temperature for 1 to 3.5 hours. In particular cases of invention implementation at cooling of alloyed steels values of critical points Ar 3 and Ar 1 correspond to alloyed steels. When cooling low-carbon steels with carbon content of up to 0.25 %, critical points Ar 3 and Ar 1 correspond to values of critical points of high carbon non-alloy steels with carbon content of 0.6–1.0 %. EFFECT: obtaining on steel parts a surface layer having high hardness and wear resistance, shorter duration of diffusion saturation, creation of favorable distribution of hardness over depth of layer, which contributes to increase of fatigue limit of material, and improvement of quality of cemented layer and transition zone. 3 cl, 7 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 709 381 C1 (51) МПК C23C 8/66 (2006.01) C23C 8/80 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 8/66 (2019.08); C23C 8/80 (2019.08) (21)(22) Заявка: 2018138813, 02.11.2018 (24) Дата начала отсчета срока действия патента: (73) Патентообладатель(и): Навоев Андрей Павлович (RU) Дата регистрации: 17.12.2019 Приоритет(ы): (22) Дата подачи заявки: 02.11.2018 (45) Опубликовано: 17.12.2019 Бюл. № 35 2 7 0 9 3 8 1 R U (54) СПОСОБ НИЗКОТЕМПЕРАТУРНОЙ ЦЕМЕНТАЦИИ (НТЦ) СТАЛИ (57) Реферат: Изобретение относится к химико- ...

Composition for carburization in solid carburizer

Method of steel article carburization

Powder-like mixture for cementation of steel components

Heat treating jig for working, in the gross, a ring gear in the carburising heat treatment furnace and process for heat treating

the holder (2) for holding a ring gear (1); the separated supporter (3) and the subsidary supporter (4) formed on the lower part; a ring-shaped plate that has fixed thickness and is equipped on a supporter (3). After uniform heating process, the ring gear is collectively quenched by jig and because circulated oil between rear of ring gear and the ring-shaped plate is stagnated, cooling velocity of rear of the ring gear is slowed compared with other part and deformation of rear is reduced and the uniform ring gear can be made without press quenching.

Process for accelerated cementation of steel products

Working surface, and system and method for production thereof

一种机械装置，包括：(a)一个具有工作面的金属工件，用于承载负荷，工作面包括含有碳原子的纳米粘性固体薄膜，薄膜与工件紧密粘接，其中，薄膜在薄膜的一个表面上与工件紧密粘接，而且薄膜的对面外露，用于与润滑剂接触；(b)一个接触面，基本处于工作面的对面；(c)一种润滑剂，处于工作面与接触面之间；(d)一种机理，用于在工作面与接触面之间产生相对运动。

Hard decoration watch case

Nitrided cast iron parts and its production

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

Heat treatment of metals

Improvements in the manufacture of valves

Improvements in the manufacture of steel parts

Method of treating steel components

Improvements to a process for carburizing steel and iron

Method and apparatus for the carburizing of articles, especially iron articles

Process for hardening and cementing iron and mild steel

Method of manufacturing a semiconductor device

Process for manufacturing boride dispersion copper alloys

ABSTRACT OF THE DISCLOSURE A process for manufacturing a boride dispersion copper alloy by preparing a metallic material having a surface portion comprising at least one of beryllium, gallium, manganese, nickel, palladium, silicon and vanadium, and copper or an alloy thereof, and diffusing boron into the surface portion. The resulting material includes fine boride particles uniformly dispersed in the surface portion and is useful as a material for electrical contacts or sliding parts due to its high resistance to adhesion, wear and arc, and excellent electrical. conductivity and sliding properties.

Nitriding Apparatus and Nitriding Treatment Method

본 발명의 일 실시예에 따르면, 질화 처리 장치가 제공된다. 본 발명의 일 실시예에 의하면, 상기 질화 처리 장치는, 금속의 질화 처리를 수행할 수 있도록 내부에 처리 공간이 형성되는 반응 챔버와, 암모니아 가스를 포함하는 처리 가스를 상기 반응 챔버로 공급하는 처리 가스 공급부와, 상기 반응 챔버에서 분해되거나 미분해된 상기 처리 가스를 배출하는 배출부와, 상기 반응 챔버 내부의 수소 분압을 검출하는 센서부 및 상기 센서부로부터 상기 수소 분압을 전송받아 상기 반응 챔버 내부의 질화 포텐셜 값을 계산하고, 상기 질화 포텐셜 값에 연동하여 상기 반응 챔버의 내부 온도 및 상기 반응 챔버로 공급되는 상기 처리 가스의 유량을 제어하는 제어부를 포함한다. According to an embodiment of the present invention, a nitriding treatment apparatus is provided. According to an embodiment of the present invention, the nitridation treatment apparatus includes a reaction chamber having a processing space formed therein so as to perform a nitriding treatment of a metal, and a treatment of supplying a processing gas including ammonia gas to the reaction chamber. A gas supply unit, a discharge unit for discharging the processed gas decomposed or undecomposed in the reaction chamber, a sensor unit for detecting a partial pressure of hydrogen inside the reaction chamber, and a partial pressure of hydrogen received from the sensor unit to an inside of the reaction chamber And a controller configured to calculate a nitridation potential value of and control the internal temperature of the reaction chamber and a flow rate of the processing gas supplied to the reaction chamber in connection with the nitridation potential value.

Method of nitriding steel articles

Carburizer and carburization method using the same

A carburizer, which effects carburization with respect to molten iron accommodated in an electric furnace or a ladle, includes a mixture of quicklime and a carbon material having an ash content of from 5 mass % to 18 mass %, and satisfies the conditions 0.6≤(mc+Mc)/ms≤2.7 and 0.7≤(mc+Mc)/ma≤6.5. A method of carburization uses this carburizer. Here, mc represents the mass of CaO in the carbon material, ms represents the mass of SiO 2 in the carbon material, ma represents the mass of Al 2 O 3 in the carbon material, and Mc represents the mass of the quicklime.

Die reinforcing method and die repairing method

A mixed powder layer is applied by coating to a cavity of a forging die made of an Fe-base alloy, at least to the region of the cavity to be reinforced or repaired, the mixed powder layer comprising the first element powder capable of being converted into a carbide to enhance the hardness of the forging die and the second element powder having a melting point lower than that of the first element powder. Die reinforcing is carried out by forging a work by using a forging die covered with the mixed powder layer and heat-treating the die by utilizing the working heat generated in the forging to thereby make the layer reflow and diffuse the carbide in the die.

process of obtaining a piston ring, piston ring and internal combustion engine

processo de obtenção de um anel de pistão, anel de pistão e motor a combustão interna. a invenção se refere, de maneira geral, a um componente de um motor de combustão interna e, mais especificamente, a invenção está relacionada a um processo de obtenção de um anel de pistão. de acordo com uma realização da invenção, o processo compreende as etapas de: a) prover um anel de pistão de motor de combustão interna, e b) submeter pelo menos uma superfície do dito anel a um tratamento térmico de superfície a laser. process of obtaining a piston ring, piston ring and internal combustion engine. The invention relates generally to a component of an internal combustion engine and, more specifically, the invention relates to a process for obtaining a piston ring. According to one embodiment of the invention, the process comprises the steps of: a) providing an internal combustion engine piston ring, and b) subjecting at least one surface of said ring to laser surface heat treatment.

Nitriding apparatus and nitriding method

Provided according to an embodiment of the present invention is a nitriding apparatus. According to an embodiment of the present invention, the nitriding apparatus comprises: a reaction chamber in which a processing space is formed so that metal nitriding can be conducted; a processing gas feeder which feeds a processing gas containing ammonia gas into the reaction chamber; an outlet through which the processing gas decomposed or non-decomposed in the reaction chamber is discharged; a sensor which detects the hydrogen partial pressure inside the reaction chamber; and a controller which receives the hydrogen partial pressure from the sensor to calculate the nitriding potential value inside the reaction chamber, and controls, in linkage with the nitriding potential value, the internal temperature of the reaction chamber and the flow rate of the processing gas fed into the reaction chamber.

Preparation of practically homogeneous cementation materials

Production of machine parts

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

Process for surface hardening of steels

Sliding member and method for producing same

Steel dipping powder

Method for resource-saving step cementation of steel

Изобретение относится к химико-термической обработке, а именно к процессам цементации, и может быть использовано в машиностроении, автотракторостроении и других отраслях промышленности для поверхностного упрочнения деталей машин, изготовленных из низкоуглеродистых конструкционных сталей. Техническим результатом изобретения является сокращение продолжительности технологического процесса цементации, получение насыщенного слоя с высокой твёрдостью после закалки и низкого отпуска, стабильной оптимальной структурой поверхностного слоя, оптимального распределения твёрдости по глубине упрочненного слоя. Для достижения технического результата осуществляют двухступенчатый режим обработки, проводимый в среде углеродсодержащих газов. Первая ступень включает нагрев до температуры выше точки Ac(например, 920-940°C) для перевода стали в аустенитное состояние, выдержку при этой температуре в течение 1,0-2,5 часов. На второй ступени диффузионного насыщения производится подстуживание с температуры выше точки Acдо выбранного значения температуры из диапазона 680-570°C и выдержка при данной температуре в течение 1,5-2,5 часов. 1 з.п. ф-лы, 5 ил. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 728 479 C1 (51) МПК C23C 8/66 (2006.01) C23C 8/80 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C23C 8/66 (2020.02); C23C 8/80 (2020.02) (21)(22) Заявка: 2020100753, 09.01.2020 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): Навоев Андрей Павлович (RU) 29.07.2020 (45) Опубликовано: 29.07.2020 Бюл. № 22 2 7 2 8 4 7 9 R U (54) СПОСОБ РЕСУРСОСБЕРЕГАЮЩЕЙ СТУПЕНЧАТОЙ ЦЕМЕНТАЦИИ СТАЛИ (57) Реферат: Изобретение относится к химико-термической упрочненного слоя. Для достижения технического обработке, а именно к процессам цементации, и результата осуществляют двухступенчатый режим может быть использовано в машиностроении, обработки, проводимый в среде автотракторостроении и других отраслях углеродсодержащих ...

Product for carburizing

Process of azotizing steel objects

New carburizing process

PROCESS FOR CARBURIZING WORKPIECES OF STEEL

Preparation process of high-strength die for automatic processing

本发明公开了一种用于自动化加工的高强度模具制备工艺，包括模套的制备步骤，镶嵌环的制备步骤和模仁的制备步骤；该工艺中的模具包括模套、安装于所述模套内侧的镶嵌环和安装于所述镶嵌环内侧的模仁；所述镶嵌环的周壁开设有四个L形通槽，四个L形通槽在镶嵌环的周壁呈均匀分布；本发明通过在模套的内侧设置镶嵌环，在镶嵌环的内侧设置模仁，模套与模仁之间无需过盈配合，避免了拆卸时对模套和模仁的损坏，保证了模套和模仁的使用寿命；在热处理的过程中对模具进行了两次渗碳，提高了渗碳层的厚度，使模具具备承受集中压力对冲的高强度性能；通过对淬火油进行改进，使淬火后的模具粗糙度低，便于染色和电镀，同时保证了模具淬火的品质。

Improved mode op producing- steel

Case-hardening compound and method of manufacturing

Processing method of 20CrMnTi brake shoe roller shaft

本发明公开了一种20CrMnTi制动蹄滚轮轴的加工方法，属于机件加工技术领域，依次包括以下步骤：下料、退火、抛丸处理、软化处理、挤压、粗车、精车、渗碳处理、预冷淬火、低温回火、二次抛丸、精磨；本发明通过二次升温和降温预冷淬火，两次回火，能有效细化晶粒，细化马氏体针，降低表层残余奥氏体含量，使高合金渗碳钢齿轮力学性能得到大幅改善，塑韧性指标明显提高。

Improvements in the Production of Materials for Case Hardening or Cementation Purposes.

313. Rodman, H. Jan. 5. Case-hardening.-A case-hardening substance is made by mixing a carbonaceous substance with "accelerating-material" and subjecting the mixture to a temperature sufficiently high to fuse or soften at least one of the ingredients. Thus a mixture of coal or coke with lime, calcium carbonate, barium carbonate, or sodium carbonate, may be coked, and the product crushed and screened to suitable sizes.

Rebuilding of worn, wear resistant machine parts - is carried out by diffusion treatment such as nitriding, boronising, carburising or carbonitriding

The parts are esp. those requiring high dimensional accuracy and high wear resistance and, when they become worn, they are subjected to a diffusion treatment, e.g. nitriding, borom diffusion, carburising, or carbonitriding, in solid, liq. or gaseous media., so atoms diffuse into the parts and form cpds. with the substrate. The diffusion process results in the growth of the parts, and is controlled so that the parts are restored to their original dimensions. Used, e.g. for rebuilding pistons and cylinders of diesel fuel injection pumps.

Process for cementing iron or its alloys

Method and device for vacuum coating.

Process of carburizing iron and steel

Manufacturing process of hardened steel objects

Manufacture of seal ring of floating seal

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

Method for forming a fusion welded joint on components made of a steel

Bei dem Verfahren zur Ausbildung einer Schmelzschweißverbindung an Bauteilen aus einem Stahl mit einem Anteil an nichtkarbidgebundenem freien Kohlenstoff im Bereich bis 1,8 Masse-% mit einem Energiestrahl (1) wird auf die jeweilige Bauteiloberfläche im Schweißbereich eine Schicht (3) aus Kohlenstoff auf die Fügefläche, die der bis 0,02-fachen Größe der Querschnittsfläche eines durch den Energieeintrag des Energiestrahls (1) in einer Schmelzzone ausgebildeten Schmelzbades (4) mit einer grundwerkstoffspezifischen Schichtdicke aufgebracht, so dass im durch den Energieeintrag aufgeschmolzenen Volumen des Schmelzbadwerkstoffs nach dessen Erstarren ein vollflächiges Vorhandensein von Restaustenitgefüge an einem Querschliff des erstarrten Schmelzbadwerkstoffs nachweisbar ist. Nachfolgend an die Ausbildung der Schicht (3) aus Kohlenstoff wird mit dem Energiestrahl (1) Grundwerkstoff (2, 2n) des/der jeweiligen Bauteile(s) innerhalb der Schmelzzone zur Ausbildung des Schmelzbades (4) aufgeschmolzen. Beim Erstarren wird die Schmelzschweißverbindung ausgebildet. In the process for forming a fusion welded joint on components made of steel with a proportion of non-carbide-bound free carbon in the range up to 1.8% by mass with an energy beam (1), a layer (3) of carbon is applied to the respective component surface in the welding region Joining area which is up to 0.02 times the size of the cross-sectional area of a melt pool (4) formed by the energy input of the energy beam (1) in a melting zone with a base material-specific layer thickness, so that the volume of the melt pool material melted by the energy input after it solidifies full presence of residual austenite structure on a cross section of the solidified molten pool material is detectable. Following the formation of the layer (3) made of carbon, the energy beam (1) is used to melt the base material (2, 2n) of the respective component (s) within the melting zone to form the melting bath (4). The fusion welded joint is ...

Method of processing corrosion resistant component parts from low-alloy carbon steels

A low alloy steel containing Ti 1.2-5.1% and C up to 0.4% such that Ti %-4xC%=0.8-3.5% is shaped and then nitrided (e.g. in gaseous ammonia at 600 DEG C.).

Process for treating a surface made of steel by ion implantation to modify the structure of the surface

Tungsten Carbide Center and manufacturing method thereof

본 발명은 초경 센터 및 그 제조방법에 관한 것으로, 본 발명에 따르면, 전단에서 후측으로 상향 경사지게 형성되며 초경 코팅층이 형성된 경사부를 포함하는 헤드부 및 상기 헤드부에 연결되는 샤프트부를 포함하는 초경 센터를 제공할 수 있다. 또한, 소재를 열처리하고 가공하여 센터의 형상을 형성하는 기초가공단계; 가공된 센터의 헤드부에 홈을 형성하는 홈가공단계; 상기 헤드부에 고속 용사 코팅을 통해 초경 코팅층을 형성하는 초경코팅단계 및 다이아몬드 연삭숫돌을 이용하여 상기 헤드부를 가공하여 초경 센터를 완성하는 정밀가공단계를 포함하는 초경 센터 제조방법을 제공할 수 있다. The present invention relates to a cemented carbide center and a method for manufacturing the same. can provide In addition, the basic processing step of heat-treating and processing the material to form the shape of the center; Grooving step of forming a groove in the head of the machined center; A cemented carbide center manufacturing method comprising a cemented carbide coating step of forming a cemented carbide coating layer through high-speed thermal spray coating on the head and a precision machining step of machining the head using a diamond grinding stone to complete the carbide center can be provided.

Material for carburizing

Patent BE531268A

Composition for tempering steel.

COMPOSITION OF A CARBURIZER FOR CEMENTING PARTS FROM LOW CARBON STEEL

Manufacture of carburized articles

A Method of and Apparatus for Hardening Blanks or Objects of all Shapes.

5055. Sch÷nemann, F., and Faconeisen- Walzwerk L. Mannstaedt et Cie Akt.-Ges. Feb. 26. Cementation.-Articles, such as rollers and the like, to be hardened by means of a gaseous or powdered hardening-medium are rotated within an externally-heated chamber during the operation. The apparatus shown comprises a furnace b having a vertically moving door u and containing a muffle c, provided with a door h arranged to be moved on rails p, and with an observation opening x. A work-holder i rotated by worm gearing k is mounted in the door and has a pipe n passing through it for supplying hardening-gas. Powdered hardening-medium is sprinkled on to the article g from a pipe q having a conveyer-worm working in a lateral branch.

Resisting fractre anchoring piece bending cutter material and preparation method thereof

本发明公开了一种抗断裂锚固件折弯切刀材料及其制备方法，该制备方法为：首先，将A2模具钢置于第一渗碳剂中进行热处理；接着，将A2模具钢置于第二渗碳剂中进行高速渗碳；然后，将A2模具钢降温并进行淬火处理以制得抗断裂锚固件折弯切刀材料；其中，第一渗碳剂含有石墨粉、碳酸钡、碳酸钾、氯化钠，并且第一渗碳剂中石墨粉的含量为68‑72重量%；第二渗碳剂含有石墨粉、碳酸钡、硼酸钠、碳酸锶、氯化钾，并且第二渗碳剂中石墨粉的含量为78‑82重量%。该抗断裂锚固件折弯切刀材料具有优异的使用寿命，同时该制备方法具有工序简单和操作简便的优点。

Carburizing Method in Low-Pressure Range

본 발명에 따른 저압 범위 내에서의 침탄방법은, 대상금속에 전처리를 수행하는 (a)단계, 상기 대상금속을 반응챔버에 투입하고, 설정온도로 승온시키는 (b)단계, 상기 반응챔버에 반응가스를 5mbar 이하 0.5mbar 초과의 압력으로 공급하여 침탄을 가속시키는 (c)단계, 상기 반응챔버에 반응가스를 0.5mbar 이상 상기 (c)단계의 반응가스의 압력 이하로 공급하여 침탄을 확산시키는 (d)단계 및 상기 (c)단계 및 상기 (d)단계를 기 설정된 시간 간격으로 반복 수행하는 (e)단계를 포함한다. The method of carburizing in a low pressure range according to the present invention includes the steps of (a) performing a pretreatment on a metal to be processed, (b) introducing the metal into a reaction chamber and raising the temperature to a set temperature, (C) supplying gas at a pressure of not less than 5 mbar and not more than 0.5 mbar to accelerate carburization, supplying the reaction gas to the reaction chamber at a pressure of not less than 0.5 mbar and not more than the pressure of the reaction gas of the step (c) (d) repeating the steps (c) and (d) at predetermined time intervals.

Carburizer and carburization method using same

This carburizer for carburizing molten iron housed in an electric furnace or a ladle, is a mixture of calcined lime and a carbon material having an ash content of 5-18 mass%, and satisfies the conditions 0.6≤(mc+Mc)/ms≤2.7 and 0.7≤(mc+Mc)/ma≤6.5. This carburization method uses said carburizer. Here, mc represents the mass of CaO in the carbon material, ms represents the mass of SiO 2 in the carbon material, ma represents the mass of Al 2 O 3 in the carbon material, and Mc represents the mass of the calcined lime.

Improvements in or relating to cutting tools

Cutting tools, e.g. drills, milling cutters, lathe turning tools and reamers, made from a ferrous alloy containing 4 per cent of molybdenum or boron are treated to convert the molybdenum or boron in the surface of the tool to molybdenum disulphide or boron nitride. The alloy preferably contains about 9 per cent of molybdenum or boron and any suitable sulphurizing or nitrogenizing treatment may be used for its surface conversion. In the case of molybdenum, a solution of sodium polysulphide and in the case of boron, any known steel nitriding process may be used. Specifications 660,129 and 663,377 are referred to.

Slide unit and its manufacturing method

滑动部件(1)由烧结体形成。该烧结体具有：滑动层(2)，其以包含含有从Ni、Mo、Mn和Cr中选择的至少1种合金元素的Fe、Cu和C作为主要成分；和基底层(3)，其在与滑动层(2)相接的状态下与滑动层(2)一起被烧结，并且以Fe、Cu、C和熔点比Cu低的金属作为主要成分。在滑动层(2)上设置有相对于其它部件滑动的滑动面(A)。

Carburizing steels

Paste for cementing iron and steel

Improvements in the manufacture and processing of steel

Product for the treatment of steels and methods of use of this product

Improvements in case-hardening mixtures for iron and steel

157,639. Schõfer, B., and Brettschneider, G. Dec. 22, 1919. No Patent granted (Sealing fee not paid). Case-hardening.-A case-hardening composition for iron and steel contains granulated brown coal and powdered limestone, and pine-wood sawdust is added when the mixture is used for tools.

Patent FR2132712A1

Product intended for cementation

Iron-based composite material and method for production of iron-based composite material

Sharp tool

The heat treatment method of tooth class part

本发明提供了一种齿类零件的热处理方法，包括：步骤S10：确定齿类零件是否要套设在模具上进行渗碳淬火；步骤S20：包括步骤S21和步骤S22，如果齿类零件需要套设在模具上进行渗碳淬火，则进行步骤S21；如果齿类零件不需要套设在模具上进行渗碳淬火，则进行步骤S22；步骤S21：齿类零件的齿轮跨距和齿轮公法线的尺寸均大于对应的标准值，然后对该齿类零件进行渗碳淬火；步骤S22：齿类零件的齿轮跨距和齿轮公法线的尺寸均小于对应的标准值，然后对该齿类零件进行渗碳淬火。本发明的齿类零件的热处理方法降低了后续处理的难度。

Method of forming a wear-resistant coating and a corrosion-resistant coating on the surface of steel products

FIELD: technological processes. SUBSTANCE: invention relates to technologies providing increased resistance of steel products to mechanical effects and to the effects of aggressive working media by changing the composition and structure of their surface layers and can be used to increase the service life of the articles. Method of forming a wear-resistant corrosion-resistant coating on the surface of steel products involves carbonization at temperature of 1,000–1,100 °C for 3–8 hours and diffusion saturation of steel products in melt containing lead, lithium and chromium, at temperature 950–1,050 °C for 2–5 hours at the following ratio of components, wt%: lead — 94.2–98.5, lithium — 0.5–0.8 and chromium — 1–5. Then heat treatment is carried out, including surface hardening at temperature of 780–850 °C and tempering at temperature of 150–180 °C. EFFECT: increased wear resistance and service life of steel products under conditions of exposure to products of high contact stresses and aggressive effects of the working environment. 1 cl, 1 tbl, 4 ex

Iron-based composite material and method for production of iron-based composite material

本发明提供一种与钢材相比耐磨损性和耐烧伤性高、冲击吸收性优异，并且与铸铁材料相比机械强度高的铁系复合材料以及该材料的制造方法。该铁系复合材料至少具有钢组织层(12)、铸铁组织层(14)、和在钢组织层(12)与铸铁组织层(14)之间对钢组织进行渗碳而成的渗碳组织层(13)。