SU423857A1 - METHOD OF HEAT TREATMENT OF STEEL PRODUCTS - Google Patents

METHOD OF HEAT TREATMENT OF STEEL PRODUCTS

Info

Publication number
SU423857A1
SU423857A1 SU1805827A SU1805827A SU423857A1 SU 423857 A1 SU423857 A1 SU 423857A1 SU 1805827 A SU1805827 A SU 1805827A SU 1805827 A SU1805827 A SU 1805827A SU 423857 A1 SU423857 A1 SU 423857A1
Authority
SU
USSR - Soviet Union
Prior art keywords
heat treatment
steel products
ammonia
temperature
hydrogen
Prior art date
Application number
SU1805827A
Other languages
Russian (ru)
Original Assignee
В. К. Некрасов, В. А. Ларионов, Р. П. Ромашин, В. Б. Скакальский
, В. М. Запол нский
Фонд Зшерш
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by В. К. Некрасов, В. А. Ларионов, Р. П. Ромашин, В. Б. Скакальский, , В. М. Запол нский, Фонд Зшерш filed Critical В. К. Некрасов, В. А. Ларионов, Р. П. Ромашин, В. Б. Скакальский
Priority to SU1805827A priority Critical patent/SU423857A1/en
Application granted granted Critical
Publication of SU423857A1 publication Critical patent/SU423857A1/en

Links

Landscapes

  • Manufacturing Of Steel Electrode Plates (AREA)

Description

1one

Изобретение относитс  к металлургии и машиностроению, в частности к способу безокислительной термической обработки листовых деталей из холоднокатаных малотекстурованных электротехнических сталей.The invention relates to metallurgy and mechanical engineering, in particular, to a method for the non-oxidative heat treatment of sheet metal parts from cold-rolled low-textual electrical steels.

Известен способ термообработки стальных изделий, включающий нагрев изделий до температуры 600°С, продувку защитным газом , отжиг в защитной атмосфере при температуре 850°С в течение 3 час, охлаждение до 300-600°С в печи со скоростью не более 50°С/час, а с 300°С - на воздухе.The known method of heat treatment of steel products, including heating products to a temperature of 600 ° C, purging with protective gas, annealing in a protective atmosphere at a temperature of 850 ° C for 3 hours, cooling to 300-600 ° C in a furnace with a speed of not more than 50 ° C / hour, and from 300 ° C - in the air.

С целью повышени  магнитной индукции по предложенному способу нагрев осуществл ют до 350-400°С со скоростью не более 100°С/час в среде аммиака с выдержкой в течение 3-4 час, затем издели  продувают водородом и отжиг провод т при температуре 650±10°С в течение 5-7 час в среде водорода с последующей продувкой аммиаком и охлаждением.In order to increase the magnetic induction according to the proposed method, the heating is carried out up to 350-400 ° C at a speed of not more than 100 ° C / hour in an ammonia medium with an exposure for 3-4 hours, then the products are rinsed with hydrogen and the annealing is performed at a temperature of 650 ± 10 ° C for 5-7 hours in an environment of hydrogen, followed by purging with ammonia and cooling.

Способ реализуетс  следующим образом.The method is implemented as follows.

Издели  загружают в муфель обычной печи дл  азотировани  США-8-12/6 (ОКБЗОЮ ) при температуре 20-50°С, продувают аммиаком до полного удалени  воздуха и нагревают детали до 400°С со скоростью не более 100°С/час в среде аммиака. Затем подают в муфель водород и выдерживают при температуре 400°С в течение 3 час. ПослеThe products are loaded into the muffle of a conventional furnace for nitriding US-8-12 / 6 (OKBZUYU) at a temperature of 20-50 ° C, blown with ammonia until air is completely removed, and heat the parts up to 400 ° C at a rate not exceeding 100 ° C / hour in the medium ammonia. Then hydrogen is fed into the muffle and kept at 400 ° C for 3 hours. After

полной замены аммиака водородом детали нагревают до температуры 650±10°С со скоростью не более 50°С/час. Выдерживают при этой температуре в течение 4 час, о.хлаждаютcomplete replacement of ammonia by hydrogen, the parts are heated to a temperature of 650 ± 10 ° C at a rate of not more than 50 ° C / hour. Maintained at this temperature for 4 hours, oh cool

до 400±10°С и замен ют водород аммиаком. Затем муфель вынимают из печи и охлаждают . По достижении температуры 200°С муфель продувают инертным газом, после чего детали извлекают.to 400 ± 10 ° C and replace hydrogen with ammonia. Then the muffle is removed from the oven and cooled. Upon reaching a temperature of 200 ° C, the muffle is flushed with an inert gas, after which the parts are removed.

В таблице показана магнитна  индукци , полученна  по предложенному способу.The table shows the magnetic induction obtained by the proposed method.

2525

Предложенный способ термообработки позвол ет получить высокое качество поверх30 ности деталей. 3 Предмет изобретени  Снособ термообработки стальных изделий, включающий нагрев, продувку защитным газом , отжиг в защитной атмосфере, охлажде-5 ние со скоростью не более 50°С/час до 600- 300°С в печи, далее на воздухе, отличающийс  тем, что, с целью повыщени  маг4 нитной индукции, нагрев осуществл ют до 350-400°С в среде аммиака с выдержкой в течение 3-4 час, затем издели  продувают водородом и последующий отжиг провод т при температуре 650±10°С в течение 5- 7 час в среде водорода с последующей продувкой аммиаком и охлаждением. The proposed heat treatment method allows to obtain a high quality of the part surface. 3 The invention of the method of heat treatment of steel products, including heating, purging with protective gas, annealing in a protective atmosphere, cooling-5 with a speed of not more than 50 ° C / hour to 600-300 ° C in an oven, then in air, characterized in , in order to increase the magnetic induction, heating is carried out up to 350-400 ° C in an ammonia medium with an exposure for 3-4 hours, then the products are rinsed with hydrogen and the subsequent annealing is carried out at a temperature of 650 ± 10 ° C for 5-7 hour in the medium of hydrogen, followed by purging with ammonia and cooling.

SU1805827A 1972-07-06 1972-07-06 METHOD OF HEAT TREATMENT OF STEEL PRODUCTS SU423857A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1805827A SU423857A1 (en) 1972-07-06 1972-07-06 METHOD OF HEAT TREATMENT OF STEEL PRODUCTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1805827A SU423857A1 (en) 1972-07-06 1972-07-06 METHOD OF HEAT TREATMENT OF STEEL PRODUCTS

Publications (1)

Publication Number Publication Date
SU423857A1 true SU423857A1 (en) 1974-04-15

Family

ID=20520495

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1805827A SU423857A1 (en) 1972-07-06 1972-07-06 METHOD OF HEAT TREATMENT OF STEEL PRODUCTS

Country Status (1)

Country Link
SU (1) SU423857A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114302972A (en) * 2020-08-03 2022-04-08 丰田纺织株式会社 Heat treatment method and heat treatment furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114302972A (en) * 2020-08-03 2022-04-08 丰田纺织株式会社 Heat treatment method and heat treatment furnace
CN114302972B (en) * 2020-08-03 2024-02-09 丰田纺织株式会社 Heat treatment method and heat treatment furnace

Similar Documents

Publication Publication Date Title
US4021272A (en) Method of isothermal annealing of band steels for tools and razor blades
SU423857A1 (en) METHOD OF HEAT TREATMENT OF STEEL PRODUCTS
US3365922A (en) Method for producing hot-worked tellurium-containing steel article
US4519852A (en) Annealing of high speed steel powder
SE8001187L (en) SET TO MAKE A CORN ORIENTED SILICONE
GB1394199A (en) Annealing furnace and method for its operation
FR2375334A1 (en) Hot dip coating of steel strip without flux - by prior heat treatment in controlled atmos. via coke oven gas with high thermal efficiency (BR 8.8.78)
GB1051835A (en) Heat treatment of refractory metals
RU2677548C1 (en) Method of boronizing steel parts
GB669118A (en) Heat treatment of strip metal
JPS5582729A (en) Heat treating method for steel material
SU825659A1 (en) Method of theatment of electroengineering steel parts
GB643367A (en) Improvements in or relating to the thermal treatment of steel and products thereof
SU1341224A1 (en) Method of heat treatment of cold-rolled strip from low-carbon steel
SU1004484A1 (en) Method for chemico-thermal treatment of ferrocobalt alloys
SU730838A1 (en) Method of annealing high-alloy steels
SU668953A1 (en) Method of heat treatment of steel ingots and castings
CN101476024B (en) Easy-to-cut high-carbon steel annealing non-oxidation process
JPS58120731A (en) Continuous annealing furnace for electrical steel plate
SU945244A1 (en) Method for nitriding
JPS5918447B2 (en) Manufacturing method of spheroidized annealed wire
SU1379325A1 (en) Method of heat treatment of articles made of alloyed steels and alloys
JPH03281723A (en) Method for removing decarburized layer from high carbon steel material
SU1516498A1 (en) Method of strengthening thermal treatment of sheet stock
JPS5544584A (en) Production by continuous annealing of cold rolled steel plate of superior workability and age resistance