Bonded valve seat

Details Bonded valve seat Bonded valve seat

1996-05-15

1997-12-02

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

251359, 1231883, 1231888, F02H 300

Patent

active

056927266

ABSTRACT:
A valve seat insert for use in forming a metallurgically bonded valve seat for a light alloy casting. The valve seat insert is comprised of a base formed from a sintered material selected from the group of ferrous, copper or nickel and is provided with a coating selected from the group of copper, tin, zinc, silicon, aluminum or silver or an alloy thereof. The coating forms an eutectic alloy with the aluminum of the cylinder head which eutectic alloy has a melting point lower than that of either the aluminum or the coating.

REFERENCES:
patent: 2753859 (1956-07-01), Bartlett
patent: 4092223 (1978-05-01), Kaufman
patent: 4422875 (1983-12-01), Nalsata et al.
patent: 4424953 (1984-01-01), Takagi et al.
patent: 4546737 (1985-10-01), Kazuoka et al.
patent: 4671491 (1987-06-01), Kuroishi et al.
patent: 4723518 (1988-02-01), Kawasaki et al.
patent: 5031878 (1991-07-01), Ishikawa et al.
patent: 5260137 (1993-11-01), Rosenthal et al.
patent: 5431136 (1995-07-01), Kenmoku et al.
patent: 5495837 (1996-03-01), Mitsuhashi et al.
Patent Abstracts of Japan, vol. 010, No. 246 (M-510), 23 Aug. 1986 European Search Report dated Aug. 29, 1996.

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