| 发明名称 |
METHOD OF REMOVING RESIDUAL STRESS FOR IMPROVING FATIGUE STRENGTH OF BOUNDARY OF HEATED ZONE |
| 摘要 |
A method for removal of residual tensile stresses from a locally casehardened steel object is disclosed. In accordance with the method, a projecting fillet is provided at the boundary of the zone on the object to be hardened. The fillet is removed after hardening is accomplished.
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| 申请公布号 |
US3652345(A) |
申请公布日期 |
1972.03.28 |
| 申请号 |
USD3652345 |
申请日期 |
1969.09.17 |
| 申请人 |
JAPANESE NATIONAL RAILWAYS;SUMITOMO METAL INDUSTRIES LTD. |
发明人 |
KATSUNOBU TOMITA;KENTARO ISHII;YOSHITO TANAKA;TAKAO SAITO |
| 分类号 |
C21D1/06;C21D1/10;(IPC1-7):C21D1/06;C21D1/08 |
主分类号 |
C21D1/06 |
| 代理机构 |
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