Title:
鉄基焼結合金製バルブシート
Document Type and Number:
Japanese Patent JP5823697
Kind Code:
B2
Abstract:
A valve seat of an iron-based sintered alloy having high wear resistance in a wide temperature range, which can be used in direct injection engines with improved fuel efficiency, low emission and high power, is obtained by limiting the amount of a solid lubricant dispersed in the matrix of the valve seat of an iron-based sintered alloy, and dispersing at least two types of hard particles having different hardnesses in the matrix, thereby providing high strength and self-lubrication, as well as improved wear resistance under no lubrication in a wide temperature range.
Inventors:
Rintaro Takahashi
Koji Hemi
Shuichi Shikauchi
Koji Hemi
Shuichi Shikauchi
Application Number:
JP2011009719A
Publication Date:
November 25, 2015
Filing Date:
January 20, 2011
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F01L3/02; B22F1/00; B22F5/00; C22C27/04
Domestic Patent References:
| JP2002129296A | ||||
| JP2005248234A | ||||
| JP2006299404A | ||||
| JP56020143A | ||||
| JP5093241A | ||||
| JP2001050020A |
Foreign References:
| WO2009122985A1 |
Attorney, Agent or Firm:
Takaishi Tachibana