发明名称 |
Nitrided piston ring with outer layer on surface |
摘要 |
A piston ring provided with a nitriding layer at entire surfaces of the piston ring body to form a compound layer and a diffusion layer, so that a compound layer is formed over the diffusion layer. From an outer peripheral surface of the piston ring body, the compound layer or both compound layer and diffusion layers is removed, and the plating or spraying layer is formed on the exposed diffusion layer or the exposed surface of the piston ring body.
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申请公布号 |
US4570946(A) |
申请公布日期 |
1986.02.18 |
申请号 |
US19850706091 |
申请日期 |
1985.02.27 |
申请人 |
NIPPON PISTON RING CO., LTD. |
发明人 |
TSUCHIYA, TAKESHI;SAMEJIMA, SHUJI |
分类号 |
C23C4/02;C23C8/80;F16J9/26;(IPC1-7):F16J9/00;F02F5/00 |
主分类号 |
C23C4/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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