BG51115A1 - Process for vacuum nitriding of high-speed steel - Google Patents
Process for vacuum nitriding of high-speed steelInfo
- Publication number
- BG51115A1 BG51115A1 BG9369491A BG9369491A BG51115A1 BG 51115 A1 BG51115 A1 BG 51115A1 BG 9369491 A BG9369491 A BG 9369491A BG 9369491 A BG9369491 A BG 9369491A BG 51115 A1 BG51115 A1 BG 51115A1
- Authority
- BG
- Bulgaria
- Prior art keywords
- hardening
- steel
- nitriding
- speed steel
- carried out
- Prior art date
Links
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The method is applicable in the machine manufacturing industry for thermochemical treatment of tools, made from high-speed steel. It prevents the formation of brittle nitride phases upon reduced process duration. It also increases the impact toughness and durability of the steel in operating conditions. The nitriding is carried out prior to hardening the steels at a temperature from 600 to 750 degrees C for 15 to 30 minutes and a pressure of ammonia of 9.3-16.0 x 10<3>Pa. Immediately after the nitriding, the heating process continues in the same furnace until the hardening temperature is reached, which is followed by triple tempering. If the vacuum furnace cannot provide enough heat for hardening, the steel is cooled slowly and the hardening and tempering processes are carried out in other facilities.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9369491A BG51115A1 (en) | 1991-01-23 | 1991-01-23 | Process for vacuum nitriding of high-speed steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9369491A BG51115A1 (en) | 1991-01-23 | 1991-01-23 | Process for vacuum nitriding of high-speed steel |
Publications (1)
Publication Number | Publication Date |
---|---|
BG51115A1 true BG51115A1 (en) | 1993-02-15 |
Family
ID=3923484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG9369491A BG51115A1 (en) | 1991-01-23 | 1991-01-23 | Process for vacuum nitriding of high-speed steel |
Country Status (1)
Country | Link |
---|---|
BG (1) | BG51115A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9212416B2 (en) | 2009-08-07 | 2015-12-15 | Swagelok Company | Low temperature carburization under soft vacuum |
US9617632B2 (en) | 2012-01-20 | 2017-04-11 | Swagelok Company | Concurrent flow of activating gas in low temperature carburization |
-
1991
- 1991-01-23 BG BG9369491A patent/BG51115A1/en unknown
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9212416B2 (en) | 2009-08-07 | 2015-12-15 | Swagelok Company | Low temperature carburization under soft vacuum |
US10156006B2 (en) | 2009-08-07 | 2018-12-18 | Swagelok Company | Low temperature carburization under soft vacuum |
US10934611B2 (en) | 2009-08-07 | 2021-03-02 | Swagelok Company | Low temperature carburization under soft vacuum |
US9617632B2 (en) | 2012-01-20 | 2017-04-11 | Swagelok Company | Concurrent flow of activating gas in low temperature carburization |
US10246766B2 (en) | 2012-01-20 | 2019-04-02 | Swagelok Company | Concurrent flow of activating gas in low temperature carburization |
US11035032B2 (en) | 2012-01-20 | 2021-06-15 | Swagelok Company | Concurrent flow of activating gas in low temperature carburization |
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