Wear-resistant member for use in internal combustion engine and

Details Wear-resistant member for use in internal combustion engine and Wear-resistant member for use in internal combustion engine and

1985-09-30

1986-12-30

Wolfe, Jr., Willis R.

Internal-combustion engines

Poppet valve operating mechanism

Rocker

123 9051, 123188AA, 123188S, 75244, 419 10, 419 11, 419 47, 428553, F01L 302

Patent

active

046320741

ABSTRACT:
A wear-resistant member and method for producing the same which member may form a movable member in an internal combustion engine which is subjected to high pressure such as a rocker arm, tappet, cam, valve or valve seat. The member is formed as a combination of a ferrous sintered body and a ferrous base body having a common surface. The sintered body is formed from a compressed powder body disposed in contact with the ferrous base body. The powder body, in a preferred embodiment, consists of 0.5 to 7.0% by weight carbon, 0.1 to 5.0% phosphorus, the balance being iron, and having a porosity of 12 to 20% by volume at least 40% of which is pores having a pore size of not more than 300.mu.. The combined powder body and ferrous base body are heated to a temperature higher than the liquid-phase temperature of the powder body but lower than the melting point of the ferrous body to sinter the powder body.

REFERENCES:
patent: 3227544 (1966-01-01), Rowady
patent: 3301240 (1967-01-01), Peresada
patent: 3683876 (1972-08-01), Lesher
patent: 3977838 (1976-08-01), Hashimoto et al.
patent: 3982907 (1976-09-01), Honma
patent: 4021205 (1977-05-01), Matsuda et al.
patent: 4230491 (1980-10-01), Behnke
patent: 4243414 (1981-01-01), Takahashi et al.

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