发明名称 |
STEEL WIRE FOR SPRING AND METHOD FOR MANUFACTURING SAME |
摘要 |
A steel wire for a spring, in which the sag resistance and the fatigue characteristics are improved by production processes without addition of alloy elements, is provided. The spring has a structure obtained by quenching and tempering and includes a first layer at a surface thereof, a second layer interior to the first layer, and a third layer, which is interior to the second layer and reaches a center of the spring, and the second layer has lower hardness than the first and the third layers. |
申请公布号 |
US2015376731(A1) |
申请公布日期 |
2015.12.31 |
申请号 |
US201414767996 |
申请日期 |
2014.02.19 |
申请人 |
HONDA MOTOR CO., LTD. |
发明人 |
Fuchigami Hirokuni |
分类号 |
C21D9/02;C21D1/10;C22C38/00;C22C38/04;C22C38/02;C21D6/00;C22C38/40 |
主分类号 |
C21D9/02 |
代理机构 |
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代理人 |
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主权项 |
1. A steel wire for a spring, the steel wire having a structure obtained by quenching and tempering and including a first layer at a surface thereof, a second layer interior to the first layer, and a third layer interior to the second layer and reaches a center of the steel wire, and the second layer having lower hardness than the first layer and the third layer. |
地址 |
Minato-ku, Tokyo JP |