Process for producing shaped slabs of particle stabilized foamed metal
AssigneeAlcan International Limited
InventorsHarry Sang, Lorne D. Kenny, Iljoon Jin
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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.
Claims17
A process for producing a slab of foam metal 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,
- characterized in that the stabilized liquid foam is continuously drawn off the surface of the molten metal composite and is continuously passed through a forming zone where it is formed into a foam product of desired cross-sectional shape.
Dependencies are inferred from the claim text.