发明名称 |
HIGH-STRENGTH SPRING AND PRODUCTION METHOD THEREFOR |
摘要 |
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> |
申请公布号 |
EP1201773(A4) |
申请公布日期 |
2004.12.08 |
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 |
主分类号 |
C21D7/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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