发明授权
- 专利标题: Power transmission shaft and constant velocity joint
- 专利标题(中): 动力传动轴和恒速接头
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申请号: US09468328申请日: 1999-12-21
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公开(公告)号: US06390924B1公开(公告)日: 2002-05-21
- 发明人: Kazuhiko Yoshida , Akira Wakita , Hiroaki Makino , Hideki Kondou
- 申请人: Kazuhiko Yoshida , Akira Wakita , Hiroaki Makino , Hideki Kondou
- 优先权: JP11-005574 19990112; JP11-018840 19990127; JP11-024014 19990201
- 主分类号: F16D326
- IPC分类号: F16D326
摘要:
A power transmission shaft using the constant velocity joint is manufactured by applying induction hardening to graphite steel thereby to harden the surface layer and form a 2-phase structure of ferrite and martensite in the core thereof. The graphite steel contains 0.35 to 0.70% of C, 0.4 to 2.0% of Si, 0.3 to 1.5% of Mn, 0.025% or less S, 0.02% or less P, 0.01 to 0.1% of Al, 0.001 to 0.004% of B and 0.002 to 0.008% of N by weight as the basic components, with the rest comprising Fe and inevitable impurities.