Patent ID: 6595266
Filing Date: 2003-07-22
Classification: B22D,C22C,Y10S

Abstract:
A method of producing a metallic aluminum slurry for casting from an aluminum alloy which has a solidus temperature, TS, and a liquidus temperature, TL, comprising the steps of:(a) providing molten aluminum alloy m; (b) contacting said molten aluminum alloy m at a temperature between TL and TL+60Â° C. with a cooling unit to change the temperature of the molten aluminum alloy m to between (TLâˆ’TS)/2+TS and TL40Â° C. so as to provide semi-condensed aluminum alloy slurry mâ€² quenched to a semi-solid state containing primary particles; and c) maintaining said semi-solid state metallic slurry mâ€² at a semi-melting temperature between TS and TL at least 15 seconds in duration.