Process for shape casting of particle stabilized metal foam

Details Process for shape casting of particle stabilized metal foam Process for shape casting of particle stabilized metal foam

1992-11-04

1994-01-25

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

164 79, B22D 2700

Patent

active

052812510

ABSTRACT:
Shaped articles are produced from foam metal by a procedure wherein the foam is formed by heating a composite of a metal matrix and finely divided solid stabilizer particles above the solidus temperature of the metal matrix and discharging gas bubbles into the molten metal composite below the surface thereof to thereby form a stabilized liquid foam on the surface of the molten metal composite. According to the novel feature the stabilized metal foam in liquid form is shape cast by being pressed into a mould and permitted to cool and solidify. The density of the cast part is essentially unchanged from that of the starting liquid foam.

REFERENCES:
patent: 3595059 (1971-07-01), Erb
patent: 3873392 (1975-03-01), Niebylski et al.
patent: 3994648 (1976-11-01), Kornylak et al.
patent: 4973358 (1990-11-01), Jin et al.

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