Title:
複合クロムめっき皮膜及びこの皮膜を用いた摺動部材
Document Type and Number:
Japanese Patent JP5885207
Kind Code:
B2
Abstract:
To provide a piston ring product in which hard particles are uniformly filled in cracks in hard chromium plating formed on the sliding surface and which has excellent long term use stability. To this end, a composite chromium plating film is provided, comprising a hard chromium plating film having crack-like grooves filled with hard particles, wherein the hard particles used are irregular particles having powder characteristics of an average circularity of 0.70 to 0.85, an average equivalent circle diameter of 6.0 µm or less and an aspect ratio of 1.3 or more. The composite chromium plating film is applied to the sliding surface of a piston ring product.
Inventors:
Takahiro Okazaki
Etsuo Tamegai
Hideaki Ueyama
Katsuaki Ogawa
Etsuo Tamegai
Hideaki Ueyama
Katsuaki Ogawa
Application Number:
JP2012551001A
Publication Date:
March 15, 2016
Filing Date:
December 27, 2011
Export Citation:
Assignee:
Nippon Piston Ring Co., Ltd.
International Classes:
C25D15/02; C25D5/14; C25D7/00; F02F5/00; F16J9/26
Domestic Patent References:
| JPH10130891A | 1998-05-19 | |||
| JPH10130892A | 1998-05-19 | |||
| JPH10130891A | 1998-05-19 | |||
| JPH10130892A | 1998-05-19 |
Attorney, Agent or Firm:
Katsuhiro Yoshimura