SU423857A1 - METHOD OF HEAT TREATMENT OF STEEL PRODUCTS - Google Patents
METHOD OF HEAT TREATMENT OF STEEL PRODUCTSInfo
- 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
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.
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)
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 |
-
1972
- 1972-07-06 SU SU1805827A patent/SU423857A1/en active
Cited By (2)
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 |
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