Method of controlling the rate of heat extraction in mould...

Details Method of controlling the rate of heat extraction in mould... Method of controlling the rate of heat extraction in mould...

B - Operations, Transporting

22

D

B22D 27/04 (2006.01) B22C 9/06 (2006.01) B22D 11/124 (2006.01)

Patent

CA 2071902

2071902 9106386 PCTABS00005 A process is described for producing castings comprising the steps of introducing a charge of molten metal, e.g. aluminum into a mould, cooling the molten metal in the mould until the outer layer of the metal solidifies and contracts leaving a gap between the surface of the casting and the surface of the mould, injecting into the gap a gas having a different thermal conductivity than air whereby the rate of further cooling of the casting can be controlled, continuing the cooling of the casting and removing the casting from the mould.

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