发明申请
- 专利标题： VALVE SPRING RETAINER FOR AN INTERNAL COMBUSTION ENGINE AND A METHOD OF MANUFACTURING THE SAME
- 专利标题（中）： 用于内燃机的阀弹簧保持器及其制造方法
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申请号： US13265125申请日： 2010-04-27
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公开(公告)号： US20120132841A1公开(公告)日： 2012-05-31
- 发明人: Takayuki Aoki , Takeshi Sassa
- 申请人： Takayuki Aoki , Takeshi Sassa
- 申请人地址： JP Shizuoka
- 专利权人： FUJI OOZX INC.
- 当前专利权人： FUJI OOZX INC.
- 当前专利权人地址： JP Shizuoka
- 国际申请： PCT/JP10/57477 WO 20100427
- 主分类号： F01L3/10
- IPC分类号： F01L3/10 ; C23C8/00 ; B24B1/00
摘要：
Oxide film formed on a spring-retaining flange by heat treatment gets unlikely to peel off, thereby improving wear resistance of a contact surface of the spring-retaining flange with a valve spring. The oxide film 15 of the part of the spring-retaining flange 3 with the valve spring 7 is at least partially removed to make thickness of the oxide film to 0.00 to 0.02 μm.