Iron-base sintered alloy for valve seat and method of making the

Details Iron-base sintered alloy for valve seat and method of making the Iron-base sintered alloy for valve seat and method of making the

1978-04-24

1980-11-11

Schafer, Richard E.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75201, 75213, 75214, 75246, C22C 3302, C22C 3838, C22C 3822, C22C 3830

Patent

active

042330734

ABSTRACT:
An iron-base sintered alloy especially suitable for valve seat manufacture having excellent wear resistance and being able to be machine-cut is provided. The alloy is produced by combining specifically atomized pre-alloyed powder, iron powder, nickel powder and graphite powder by means of compacting and sintering processes, and has a microstructure comprising pearlite and globular hard alloy phase formed with said atomized pre-alloyed hard alloy powder uniformly dispersed in said pearlite and martensite surrounding said hard alloy phase.

REFERENCES:
patent: 3918923 (1975-11-01), Inoue
patent: 3982905 (1976-09-01), Osawa et al.
patent: 3982907 (1976-09-01), Honma
patent: 4021205 (1977-05-01), Matsuda et al.
patent: 4080205 (1978-03-01), Nimmi et al.

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