Process for producing shaped slabs of particle stabilized foamed

Details Process for producing shaped slabs of particle stabilized foamed Process for producing shaped slabs of particle stabilized foamed

1992-06-29

1994-08-02

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

164 79, 427244, B22D 2700

Patent

active

053342364

ABSTRACT:
A process and apparatus are described for manufacturing particle stabilized foamed metal slabs. A foam is first formed in a foaming chamber 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. The stabilized liquid foam is continuously drawn off the surface of the molten metal composite and is solidified into a shaped foam product while being continuously drawn off.

REFERENCES:
patent: 3941182 (1976-03-01), Bjorksten et al.
patent: 4973358 (1990-11-01), Jin et al.

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