SU71013A1 - Method of heat treatment of high-speed steel tools - Google Patents
Method of heat treatment of high-speed steel toolsInfo
- Publication number
- SU71013A1 SU71013A1 SU252A SU347549A SU71013A1 SU 71013 A1 SU71013 A1 SU 71013A1 SU 252 A SU252 A SU 252A SU 347549 A SU347549 A SU 347549A SU 71013 A1 SU71013 A1 SU 71013A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- heat treatment
- speed steel
- steel tools
- tempering
- steel
- Prior art date
Links
Description
При закалке быстрорежущей стали в структуре последне сохран етс значительное количество остаточного аустенита.During quenching of high-speed steel, a significant amount of residual austenite remains in the structure.
Известно, что, с целью разложени этого остаточного аустенита и иревращени его в мартенсит, быстрорежун ую сталь после закалки нодвергают многократному отпуску при 550-570°.It is known that, in order to decompose this residual austenite and turn it into martensite, high throughput steel, after quenching, is subjected to repeated tempering at 550-570 °.
Подобный многократный отпуск упрочн ет сталь, но, по данным автора, превраиаение порций аустенита в мартенсит, протекающее во врем охлаждени с температуры , вызывает в стали дополнительные внутренние напр жени .Such multiple tempering hardens the steel, but, according to the author, the transformation of portions of austenite into martensite, which occurs during cooling from temperature, causes additional internal stresses in the steel.
Согласно изобретению предлагаетс устран ть эти внутренние напр жени , подверга инструмент после обычной закалки и отпуска еихе дополнительном}- низкому отпуску нри температуре 150° в течение 1,-1,5 час.According to the invention, it is proposed to eliminate these internal stresses, subjecting the tool after ordinary quenching and tempering to additional} low tempering at a temperature of 150 ° for 1, -1.5 hours.
Предмет изобретени Subject invention
Способ термической обработки инструментов из быстрорежущей стали, о т л и ч а IO ид и и с тем, что нос.че обычно) закалки и отпуска инспрумемты подвергают дополнительному низкому отпуску при темпе )атуре 150°втечение 1 -1,5 час, с целью устранени внутренних напр жений в стали, возникших при превращении части оетаточного аустепита в мартенсит во врем предварительного отпуска.The method of heat treatment of high-speed steel tools, tl and h and IO id and the fact that nos.che usually) quenching and tempering inspectromata subjected to additional low tempering at a rate of 150 ° for 1 -1.5 hours, sec the purpose of eliminating the internal stresses in steel that have arisen during the transformation of a part of the residual austepite into martensite during the preliminary tempering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU252A SU71013A1 (en) | 1946-05-03 | 1946-05-03 | Method of heat treatment of high-speed steel tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU252A SU71013A1 (en) | 1946-05-03 | 1946-05-03 | Method of heat treatment of high-speed steel tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU71013A1 true SU71013A1 (en) | 1947-11-30 |
Family
ID=52471739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU252A SU71013A1 (en) | 1946-05-03 | 1946-05-03 | Method of heat treatment of high-speed steel tools |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU71013A1 (en) |
-
1946
- 1946-05-03 SU SU252A patent/SU71013A1/en active
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