Inventors:
Sherwood W. McGee - Lisle IL
Charles T. Shork - Claremore OK
Assignee:
Amsted Industries Incorporated - Chicago IL
International Classification:
B22F 100
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.