发明授权
- 专利标题: Method of producing piston ring
- 专利标题(中): 生产活塞环的方法
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申请号: US978233申请日: 1992-11-20
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公开(公告)号: US5433001A公开(公告)日: 1995-07-18
- 发明人: Takeshi Tsuchiya , Shuji Sameshima , Yoshio Onodera , Satoshi Kawashima
- 申请人: Takeshi Tsuchiya , Shuji Sameshima , Yoshio Onodera , Satoshi Kawashima
- 申请人地址: JPX
- 专利权人: Nippon Piston Ring Co., Ltd.
- 当前专利权人: Nippon Piston Ring Co., Ltd.
- 当前专利权人地址: JPX
- 优先权: JPX3-309114 19911125
- 主分类号: C23C8/26
- IPC分类号: C23C8/26 ; C23C8/80 ; F02F5/00 ; F16J9/26 ; B23P15/00
摘要:
A method of producing a piston ring to be incorporated in an internal combustion engine includes first nitriding surfaces of a steel base material in a high temperature range and then continuously nitriding in a low temperature range. Finally a porous layer of at least a sliding surface is removed to expose a diffusion layer under the porous layer.
公开/授权文献
- US5846986A Therapeutic phenoxyalkylazoles and phenoxyalkylazines 公开/授权日:1998-12-08
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