发明名称 |
Piston ring member |
摘要 |
A piston ring having an improved wear resistance and antiseizure properties and good workability is disclosed. The piston ring is made of a martensite stainless steel comprising from 0.4 to 0.7 wt % C, 0.3 to 1.0 wt % Si, 0.5 to 1.0 wt % Mn, and 2.0 to 9.0 wt % Cr, the balance being iron and impurities. Additionally, a surface-treated layer having a quench and temper hardness (HRC) of 40 to 50 is formed on at least that part of the piston ring which slides against the wall of a cylinder in which reciprocates a piston on which the piston ring is mounted. Preferably, the surface-treated layer is formed by hard Cr plating.
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申请公布号 |
US4612260(A) |
申请公布日期 |
1986.09.16 |
申请号 |
US19840638939 |
申请日期 |
1984.08.09 |
申请人 |
NIPPON PISTON RING CO., LTD. |
发明人 |
KUMAGAI, ATSUSHI;TANABE, TSUTOMU;YASUNAGA, HIROKAZU |
分类号 |
F16J9/26;(IPC1-7):F16J9/26 |
主分类号 |
F16J9/26 |
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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