SU1456473A1 - Method of heat treatment of rolled stock - Google Patents
Method of heat treatment of rolled stock Download PDFInfo
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- SU1456473A1 SU1456473A1 SU874219146A SU4219146A SU1456473A1 SU 1456473 A1 SU1456473 A1 SU 1456473A1 SU 874219146 A SU874219146 A SU 874219146A SU 4219146 A SU4219146 A SU 4219146A SU 1456473 A1 SU1456473 A1 SU 1456473A1
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- cooling
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- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Изобретение относитс к черной металлургии и может быть использовано при производстве проката дл холодной высадки. Цель изобретени - повышение уровн прочности при сохранении пластичности. Дл этого прокат через 1,0-1,1 с после окончани гор чей деформации охлаждают со скоростью в 1,4-1,6 раза больше критической до 700-500 0, выдерживают при этой температуре 10-15 мин, охлаждают на воздухе и отжигают при 730- 760 С. 1 .з.п. ф-лы, 1 табл.The invention relates to ferrous metallurgy and can be used in the manufacture of cold-rolled steel. The purpose of the invention is to increase the level of strength while maintaining plasticity. For this, the car is cooled 1.0–1.1 s after termination of the hot deformation at a rate of 1.4–1.6 times the critical speed to 700–500 ° C, kept at this temperature for 10–15 min, cooled in air and annealed at 730-760 C. 1. z. p. f-ly, 1 tab.
Description
Изобретение относитс к черной металлургии, в частности к термической .обработке проката дл холодной высадки.The invention relates to ferrous metallurgy, in particular to the thermal treatment of rolled products for cold heading.
Цель изобретени - повьшение прочностных свойств проката при сохранении уровн пластичности.The purpose of the invention is to increase the strength properties of rolled products while maintaining the level of plasticity.
Пример. Прокат из стали диаметром 23 мм получали на стане 250-6. После гор чей пластической деформации через 0,8; 1,0; 1,05; 1,25 с начинали охлаждение водой высокого давлени , которое производили до 620°С со скоростью больше критической в 1,2; 1,4; 1,5; 1,6; 1,8 раза, что составл ло 480, 560, 600, 640, 720 С/с, затем осуществл ли изотермическую выдержку при этой температуре длительностью 5, 10, 12, 15, 20 мин с последующим охлаждением Example. Rolled steel with a diameter of 23 mm was obtained at the mill 250-6. After hot plastic deformation through 0.8; 1.0; 1.05; 1.25 seconds, cooling with high pressure water was started, which was produced up to 620 ° C at a speed greater than the critical speed of 1.2; 1.4; 1.5; 1.6; 1.8 times, which was 480, 560, 600, 640, 720 C / s, then isothermal aging was performed at this temperature for 5, 10, 12, 15, 20 minutes, followed by cooling
на воздухе и отжиг при в проходных роликовых печах.in the air and annealing when in a continuous roller furnaces.
По известному способу прокат из стали после гор чей пластической деформации охлаждали со скоростью больше критической до 700, 600 и , производили изотермическую выдержку при этой температуре на воздухе в течение 20, 40, 60 мин с последующим охлаждением и отжиг приAccording to a known method, rolled from steel after hot plastic deformation was cooled at a speed greater than the critical speed to 700, 600 and produced isothermal holding at this temperature in air for 20, 40, 60 min, followed by cooling and annealing at
730, 750-7604.730, 750-7604.
//
Результаты испытаний приведены в таблице.The test results are shown in the table.
Как видно из таблицы, предлагаемый способ позвол ет по сравнению с известным повысить прочностные свойства проката при сохранении имеющегос уровн пластичности.As can be seen from the table, the proposed method allows, in comparison with the known method, to increase the strength properties of rolled products while maintaining the existing level of ductility.
О5 4 O5 4
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3U56473 3U56473
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874219146A SU1456473A1 (en) | 1987-01-19 | 1987-01-19 | Method of heat treatment of rolled stock |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU874219146A SU1456473A1 (en) | 1987-01-19 | 1987-01-19 | Method of heat treatment of rolled stock |
Publications (1)
Publication Number | Publication Date |
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SU1456473A1 true SU1456473A1 (en) | 1989-02-07 |
Family
ID=21294328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU874219146A SU1456473A1 (en) | 1987-01-19 | 1987-01-19 | Method of heat treatment of rolled stock |
Country Status (1)
Country | Link |
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SU (1) | SU1456473A1 (en) |
-
1987
- 1987-01-19 SU SU874219146A patent/SU1456473A1/en active
Non-Patent Citations (1)
Title |
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Авторское свидетельство СССР № 286725, кл. С 21 D 1/02, 1967. Авторское свидетельство СССР № 588245, кл. С 21 D 1/78, 1976. Авторское свидетельство СССР № 829687, кл. С 21 D 1/78, 1979. * |
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