| 发明名称 |
HIGH-STRENGTH SPRING AND PRODUCTION METHOD THEREFOR |
| 摘要 |
<p>In a production process for highly strengthened springs, the process comprises performing a first shot peening to a spring steel having a hardness of a diameter of 2.7 mm or less on a Brinell ball mark while applying stress to the springs at a warm temperature in the range of 150 to 350 DEG C. <IMAGE></p> |
| 申请公布号 |
EP1201773(A1) |
申请公布日期 |
2002.05.02 |
| 申请号 |
EP20000937195 |
申请日期 |
2000.06.08 |
| 申请人 |
NHK SPRING CO., LTD. |
发明人 |
TANGE, AKIRA;ANDO, KOTOJI;WATANABE, KOJI |
| 分类号 |
C21D7/06;C21D9/02;F16F1/02;(IPC1-7):C21D7/06 |
主分类号 |
C21D7/06 |
| 代理机构 |
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代理人 |
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