发明名称 |
STEEL WIRE FOR HARD DRAWN SPRING EXCELLENT IN FATIGUE STRENGTH AND RESISTANCE TO SETTLING, AND HARD DRAWN SPRING |
摘要 |
<p>Disclosed is a hard-drawn spring which exhibits fatigue strength and sag resistance equal or superior to springs produced using an oil-tempered wire. The hard-drawn spring is produced using a steel wire containing 0.5 to 0.7 mass % of C, 1.0 to 1.95 mass % of Si, 0.5 to 1.5 mass % of Mn and 0.5 to 1.5 mass % of Cr, with the balance being Fe and inevitable impurities. In the steel wire, the number of carbides having circle-equivalent diameters of 0.1 μm or more is 5 particles/100 μm2 or less.</p> |
申请公布号 |
EP1491647(B1) |
申请公布日期 |
2006.07.26 |
申请号 |
EP20030745417 |
申请日期 |
2003.03.26 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO;SUNCALL CORPORATION |
发明人 |
SUDA, SUMIE;IBARAKI, NOBUHIKO;YOSHIHARA, NAO;YOSHIDA, SHIGETSUGU;HARADA, KOJI |
分类号 |
C22C38/00;C21D8/06;C21D9/52;C22C38/02;C22C38/04;C22C38/18;C22C38/34;C22C38/44 |
主分类号 |
C22C38/00 |
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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