发明名称 |
MACHINE PART AND METHOD FOR MANUFACTURING SAME |
摘要 |
A mechanical component 1 composed of a steel is surface-hardened by nitriding, and specifically has a surficial layer 2 raised in the surface hardness by the nitriding, and an inner portion 3 not affected by the nitriding and showing a nearly constant hardness. Vickers hardness of the inner portion 3 is adjusted to 190 to 260 HV, Vickers hardness of the surficial portion 2 measured at a reference position corresponded to a 50 mu m depth from the component surface is adjusted to 340 to 460 HV, and effective depth of hardened layer measured from the component surface 4, where a Vickers hardness of 270 HV is achieved, is adjusted to 0.3 mm or more. This makes it possible to provide a mechanical component which is composed of a steel and surface-hardened by nitriding, and is successfully improved in the strength and bending straightening property, and also to provide a method of fabricating the same. <IMAGE>
|
申请公布号 |
EP1548141(A1) |
申请公布日期 |
2005.06.29 |
申请号 |
EP20030798399 |
申请日期 |
2003.09.11 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
MATSUDA, HIDEKI;TAKASHIMA, MITSUO;INOUE, KOICHIRO;KUREBAYASHI, YUTAKA;MATSUMURA, YASUSHI |
分类号 |
C21D1/06;C21D9/30;C22C38/00;C22C38/02;C22C38/04;C22C38/42;C22C38/58;C22C38/60;C23C8/26;C23C8/50;(IPC1-7):C22C38/00 |
主分类号 |
C21D1/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|