JPS5789424A - Manufacture of touch steel having excellent tempering resistance - Google Patents
Manufacture of touch steel having excellent tempering resistanceInfo
- Publication number
- JPS5789424A JPS5789424A JP16479480A JP16479480A JPS5789424A JP S5789424 A JPS5789424 A JP S5789424A JP 16479480 A JP16479480 A JP 16479480A JP 16479480 A JP16479480 A JP 16479480A JP S5789424 A JPS5789424 A JP S5789424A
- Authority
- JP
- Japan
- Prior art keywords
- manufacture
- steel material
- steel
- tempering resistance
- cooled
- 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 manufacture a steel having excellent strength and toughness at low cost by hardening and tempering a steel material containing specific proportions of C, Si, Mn, Cr, Mo, and Al under a specific condition.
CONSTITUTION: A steel material containing 0.08W0.50wt% C, 0.1W1.5wt% Si, 0.3W2.0wt% Mn, 0.2W2.0wt% Cr, 0.05W1.00wt% Mo, 0.01W0.10wt% Al, and Fe and inevitable impurities is prepared. The steel material is cooled, when being cooled from austenite state, over a cooling period K(sec) from 800W500°C in such a way as to meet the condition A1≥logK≥A2, and then tempered at a temperature below the point Ac1. In this case, A1=3.4C(%)+0.2Si(%)+0.5Mn (%)+0.8Cr(%)+0.5Mo(%)-1.9, and also A2=2.5C(%)+0.8Mn(%)+0.7Cr(%)+ 0.8Mo(%)-0.35.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16479480A JPS5789424A (en) | 1980-11-22 | 1980-11-22 | Manufacture of touch steel having excellent tempering resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16479480A JPS5789424A (en) | 1980-11-22 | 1980-11-22 | Manufacture of touch steel having excellent tempering resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5789424A true JPS5789424A (en) | 1982-06-03 |
Family
ID=15800060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16479480A Pending JPS5789424A (en) | 1980-11-22 | 1980-11-22 | Manufacture of touch steel having excellent tempering resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5789424A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7422643B2 (en) | 2003-03-11 | 2008-09-09 | Komatsu Ltd. | Rolling element and method of producing the same |
US7544255B2 (en) | 2003-03-04 | 2009-06-09 | Komatsu Ltd. | Rolling element |
-
1980
- 1980-11-22 JP JP16479480A patent/JPS5789424A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7544255B2 (en) | 2003-03-04 | 2009-06-09 | Komatsu Ltd. | Rolling element |
US7691212B2 (en) | 2003-03-04 | 2010-04-06 | Komatsu Ltd. | Rolling element and method of producing the same |
US7422643B2 (en) | 2003-03-11 | 2008-09-09 | Komatsu Ltd. | Rolling element and method of producing the same |
US7691213B2 (en) | 2003-03-11 | 2010-04-06 | Komatsu Ltd. | Case hardened gear and method of producing the same |
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