Method of producing lightweight foamed metal
AssigneeAlcan International Limited
InventorsIljoon Jin, Lorne D. Kenny, Harry Sang
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Abstract
A method is described for producing foamed metal in which gaseous bubbles are retained within a mass of molten metal during foaming. The method comprises heating a composite of a metal matrix and finely divided solid stabilizer particles above the liquidus temperature of the metal matrix, discharging gas bubbles into the molten metal composite below the surface thereof to thereby form a foamed melt on the surface of the molten metal composite and cooling the foamed melt thus formed below the solidus temperature of the melt to form a solid foamed metal having a plurality of closed cells.
Claims10
A process for producing foamed metal wherein gaseous bubbles are retained within a mass of molten metal during the foaming, comprising the steps of:
- heating a composite of a metal matrix and finely divided solid stabilizer particles above the liquidus temperature of the metal matrix,
- discharging gas bubbles into the molten metal composite below the surface thereof to thereby form a foamed melt on the surface of the molten metal composite and cooling the foamed melt below the solidus temperature of the melt to form a solid foamed metal having a plurality of closed cells.
Dependencies are inferred from the claim text.