RU2007122021A - METHOD FOR PRODUCING THERMOMECHANICALLY PROCESSED HOT-ROLLED PIPES - Google Patents
METHOD FOR PRODUCING THERMOMECHANICALLY PROCESSED HOT-ROLLED PIPES Download PDFInfo
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- RU2007122021A RU2007122021A RU2007122021/02A RU2007122021A RU2007122021A RU 2007122021 A RU2007122021 A RU 2007122021A RU 2007122021/02 A RU2007122021/02 A RU 2007122021/02A RU 2007122021 A RU2007122021 A RU 2007122021A RU 2007122021 A RU2007122021 A RU 2007122021A
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- air
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- minutes
- pipe
- rolled pipes
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- Heat Treatment Of Steel (AREA)
Abstract
Способ производства термомеханически обработанных горячекатаных труб, включающий горячую пластическую деформацию трубы, ее влажное охлаждение со скоростью, предотвращающей распад аустенита, и последующее охлаждение на воздухе, отличающийся тем, что влажное охлаждение осуществляют до температуры, лежащей в интервале мартенситного превращения, а после охлаждения на воздухе трубу нагревают в индукторе, питаемом переменным током частотой 50...60 Гц, до температуры 740...760°С в течение 1...1,5 мин, выдерживают в течение 2...4 мин и окончательно охлаждают на воздухе.A method for the production of thermomechanically processed hot rolled pipes, including hot plastic deformation of the pipe, its wet cooling at a rate that prevents the decomposition of austenite, and subsequent cooling in air, characterized in that the wet cooling is carried out to a temperature lying in the range of martensitic transformation, and after cooling in air the pipe is heated in an inductor fed by alternating current with a frequency of 50 ... 60 Hz, to a temperature of 740 ... 760 ° C for 1 ... 1.5 minutes, kept for 2 ... 4 minutes and finally cooled ayut air.
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2007122021/02A RU2353671C2 (en) | 2007-06-15 | 2007-06-15 | Method for production of thermomechanically treated hot rolled pipes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2007122021/02A RU2353671C2 (en) | 2007-06-15 | 2007-06-15 | Method for production of thermomechanically treated hot rolled pipes |
Publications (2)
Publication Number | Publication Date |
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RU2007122021A true RU2007122021A (en) | 2008-12-20 |
RU2353671C2 RU2353671C2 (en) | 2009-04-27 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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RU2007122021/02A RU2353671C2 (en) | 2007-06-15 | 2007-06-15 | Method for production of thermomechanically treated hot rolled pipes |
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RU (1) | RU2353671C2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2580773C2 (en) * | 2014-08-12 | 2016-04-10 | Публичное акционерное общество "Синарский трубный завод" (ПАО "СинТЗ") | Tube rolling method with thermomechanical treatment |
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2007
- 2007-06-15 RU RU2007122021/02A patent/RU2353671C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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RU2353671C2 (en) | 2009-04-27 |
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Legal Events
Date | Code | Title | Description |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20090616 |