Title:
ピストンリング及びその製造方法
Document Type and Number:
Japanese Patent JP6313601
Kind Code:
B2
Abstract:
To provide a piston ring of low-alloy steel having excellent nitridability, namely, a piston ring of low-alloy steel having excellent thermal conductivity and capable of being provided with a sufficient nitrided layer, steel comprising by mass 0.45-0.65% of C, 0.15-0.35% of Si, 0.65-1.00% of Mn and 0.60-1.10% of Cr as indispensable alloy elements, and less than 0.35% of Mo, less than 0.25% of V and less than 0.001% of B as optional alloy elements, the total amount of the indispensable alloy elements and the optional alloy elements being less than 3.0% by mass, is formed into a piston ring; and the nitrided layer is formed on its surface.
Inventors:
Yuji Shima
Application Number:
JP2014010493A
Publication Date:
April 18, 2018
Filing Date:
January 23, 2014
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F16J9/26; C21D1/06; C21D1/30; C21D1/32; C21D9/52; C22C38/00; C22C38/32; C23C8/02; C23C8/26; C23C8/38; C23C8/80
Domestic Patent References:
| JP2009235561A | ||||
| JP4954644B2 | ||||
| JP2013076125A | ||||
| JP2014005532A | ||||
| JP2013029191A | ||||
| JP3380748B2 | ||||
| JP2002317225A | ||||
| JP2000282177A | ||||
| JP2005061389A |
Attorney, Agent or Firm:
Takaishi Tachibana