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Title:
焼結バルブシート
Document Type and Number:
Japanese Patent JP6386676
Kind Code:
B2
Abstract:
To provide a press-fitting, sintered valve seat having excellent valve coolability enabling use in high-efficiency engines, as well as excellent deformation resistance and wear resistance, first and second hard particles differing in hardness are dispersed in a total amount of 25-70% by mass in a network-shaped Cu matrix, the second hard particles having hardness of 300-650 HV0.1, lower than that of the first hard particles, and 0.08-2.2% by mass of P is contained in the sintered valve seat.

Inventors:
Hashimoto Kimiaki
Application Number:
JP2017543487A
Publication Date:
September 05, 2018
Filing Date:
September 28, 2016
Export Citation:
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Assignee:
Riken Co., Ltd.
International Classes:
F01L3/02; B22F1/05; B22F1/105
Domestic Patent References:
JP2007077438A
JP5202451A
JP2005248234A
JP3060895A
JP11021659A
Attorney, Agent or Firm:
Takaishi Tachibana
Kenji Takaishi