JPS6439354A - Warm-forging steel - Google Patents
Warm-forging steelInfo
- Publication number
- JPS6439354A JPS6439354A JP19398987A JP19398987A JPS6439354A JP S6439354 A JPS6439354 A JP S6439354A JP 19398987 A JP19398987 A JP 19398987A JP 19398987 A JP19398987 A JP 19398987A JP S6439354 A JPS6439354 A JP S6439354A
- Authority
- JP
- Japan
- Prior art keywords
- warm
- steel
- forging
- case
- warm forging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Heat Treatment Of Steel (AREA)
Abstract
PURPOSE:To prevent internal grain coarsening due to carburizing treatment after warm forging and also to improve strength and toughness, by combinedly adding and incorporating Ni or further Mo, together with prescribed amounts of Al, Nb, and N, in a case hardening steel for warm forging. CONSTITUTION:As a case-hardening steel for warm forging, a steel which has a composition consisting of, by weight, 0.10-0.30% C, <0.50% Si, 0.3-2.0% Mn, 0.10-0.70% Ni, 0.30-2.0% Cr, 0.015-0.05% Al, 0.01-0.10% Nb, 0.0040-0.0090% N, and the balance Fe or further containing 0.10-0.35% Mo is provided. The steel stock with the above composition is subjected to warm upset forging and then to carburizing treatment, e.g., at 930 deg.C for 3hr. The coarsening of internal crystalline grains does not occur and the grains are formed into graded fine grains of grain size No.6-10, by which the case- hardening steel for warm forging excellent in strength and toughness can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19398987A JPS6439354A (en) | 1987-08-03 | 1987-08-03 | Warm-forging steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19398987A JPS6439354A (en) | 1987-08-03 | 1987-08-03 | Warm-forging steel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6439354A true JPS6439354A (en) | 1989-02-09 |
Family
ID=16317117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19398987A Pending JPS6439354A (en) | 1987-08-03 | 1987-08-03 | Warm-forging steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6439354A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014196529A1 (en) * | 2013-06-05 | 2014-12-11 | 大同特殊鋼株式会社 | Carburized component and method for manufacturing same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60159155A (en) * | 1984-01-26 | 1985-08-20 | Sumitomo Metal Ind Ltd | Case hardened steel for warm forging having excellent resistance to formation of coarse grains |
-
1987
- 1987-08-03 JP JP19398987A patent/JPS6439354A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60159155A (en) * | 1984-01-26 | 1985-08-20 | Sumitomo Metal Ind Ltd | Case hardened steel for warm forging having excellent resistance to formation of coarse grains |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014196529A1 (en) * | 2013-06-05 | 2014-12-11 | 大同特殊鋼株式会社 | Carburized component and method for manufacturing same |
JP2014234552A (en) * | 2013-06-05 | 2014-12-15 | 大同特殊鋼株式会社 | Carburized component and method of manufacturing the same |
US10767252B2 (en) | 2013-06-05 | 2020-09-08 | Daido Steel Co., Ltd. | Carburized component and method for manufacturing same |
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