Briquette for spot hardening of powder metal parts

Details Briquette for spot hardening of powder metal parts Briquette for spot hardening of powder metal parts

1976-12-23

1979-10-30

Kendall, Ralph S.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75247, 75208R, 428546, 75214, 427383D, B22F 100

Patent

active

041727193

ABSTRACT:
A local zone only of a powdered metal part is hardened by heating the part, in contact with a powdered metal alloy briquette with a surface of the zone to be locally hardened, to the liquidus range of the briquette and holding the part and the briquette at the liquidus range for a length of time sufficient for the liquid metal and hardening elements of the briquette to infiltrate into the local zone of the part.

REFERENCES:
patent: 2606831 (1952-08-01), Koehring
patent: 2817601 (1957-12-01), Shigley
patent: 2928755 (1960-03-01), Brandstadt et al.
patent: 3091029 (1963-05-01), Davis et al.
patent: 3459547 (1969-08-01), Andreotti et al.
patent: 3619170 (1971-11-01), Fisher
patent: 3823002 (1974-07-01), Kirby et al.
patent: 3994734 (1976-11-01), Cuthbert
Winterton et al., Chem. Abs., 66:79136t (1967).

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