Process for producing metal foam and metal body produced using this process
AssigneesGoldschmidt GmbH, Buehler Druckguss AG
InventorsWilfried Knott, Benno Niedermann, Manfred Recksik, Andreas Weier
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Abstract
The invention relates to a process for producing metal foam and to a metal body produced using this process. The object is achieved by a process for producing metal foam by adding a blowing agent to a metal melt, wherein the metal melt is introduced into the die cavity of a metal die-casting machine and is foamed using a blowing agent which releases gases and is solid at room temperature.
Claims14
A process for producing an aluminum or an aluminum alloy metal foam in a die-casting machine comprising a shot-sleeve and a die cavity which comprises:
- a die-casting step comprising
- (a) introducing at high pressure an aluminum or an aluminum alloy metal melt into the shot sleeve and transferring said melt to the die cavity;
- and
- (b) mixing magnesium hydride as a blowing agent with the aluminium or aluminium alloy metal melt wherein the magnesium hydride is introduced with the aluminium or aluminium alloy metal into the shot sleeve or is introduced directly into the die cavity;
- and
- (ii) wherein foaming of the mixture of the aluminium or aluminium alloy metal and magnesium hydride takes place in the die cavity.
A process for producing an aluminum or an aluminum alloy metal foam in a die-casting machine comprising a shot-sleeve and a die cavity which comprises foaming a mixture comprising an aluminum or an aluminum alloy metal melt and magnesium hydride as a blowing agent in the die cavity at a pressure at or greater than approximately 107 Pa.
Dependencies are inferred from the claim text.