Process for producing heat-treated sintered iron alloy part

Details Process for producing heat-treated sintered iron alloy part Process for producing heat-treated sintered iron alloy part

1995-01-18

1996-10-08

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C21D 600

Patent

active

055627862

ABSTRACT:
A process for producing a heat-treated sintered iron alloy part, the process comprising: austenizing an iron-based sinter having a martensitic transformation initiation point (Ms point) of from 50.degree. to 350.degree. C., at a temperature not lower than the austenizing temperature (Ae1 point) of the sinter; quenching the austenized sinter at a cooling rate at which martensitic transformation occurs; and sizing or coining the quenched sinter at the time when the temperature of the sinter which is being quenched has reached the temperature range of from the Ms point to the Ae1 point.

REFERENCES:
patent: 3951697 (1976-03-01), Sherby et al.
patent: 4251273 (1981-02-01), Smith et al.
patent: 4778522 (1988-10-01), Maki et al.
patent: 4796575 (1989-01-01), Matsubara et al.
Patent Abstracts of Japan vol. 005 No. 025 (M-055), 14 Feb. 1981.
Derwent Publications Ltd., London, GB; Class M22, AN 88-267713.

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