PISTON RING |
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| 申请号 | US15557797 | 申请日 | 2016-02-15 | 公开(公告)号 | US20180080556A1 | 公开(公告)日 | 2018-03-22 |
| 申请人 | KABUSHIKI KAISHA RIKEN; | 发明人 | Daisuke SATO; Shuichi KAMURA; | ||||
| 摘要 | Provided is a piston ring excellent in peeling resistance, wear resistance, and thermal conductivity. A piston ring 1 includes: an annular main body 2 having a pair of side faces 2a and 2b, an outer peripheral face 2d, and an inner peripheral face 2c; and a hard coating 11 provided on the outer peripheral face 2d. When a width of the main body 2 in a first direction D1 perpendicular to the pair of side faces 2a and 2b is set to h1 mm, a width of the hard coating 11 in the first direction D1 is set to W mm, and a thickness of the hard coating 11 in a second direction D2 perpendicular to the outer peripheral face 2d is set to L mm, the following Formula (1) is satisfied: 0.003≦(L·h1)/W≦0.151 (1) | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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