Process of manufacturing high-strength sintered members

Details Process of manufacturing high-strength sintered members Process of manufacturing high-strength sintered members

1991-02-19

1991-12-03

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 23, 419 30, 419 33, 419 47, G22F 100

Patent

active

050698672

ABSTRACT:
To permit an economical manufacture of high-strength sintered members for use in valve timing mechanisms of internal combustion engine by powder metallurgy with liquid-phase sintering, an iron-base powder mixture is provided, which contains 13 to 18% by weight chromium or 3 to 6% by weight molybdenum as a carbide-forming alloying element in the iron alloy powder and also contains 1.5 to 2.6% carbon and 0.4 to 1.0% by weight phosphorus. A corresponding molten iron alloy is atomized into an entraining gas or water jet and is subsequently mixed with the remaining components of the powder.

REFERENCES:
patent: 3999952 (1976-12-01), Kondo et al.
patent: 4167582 (1979-09-01), Takahashi et al.

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