Vacuum lift foam filled casting system

Details Vacuum lift foam filled casting system Vacuum lift foam filled casting system

B - Operations, Transporting

22

D

22/162, 22/74

B22D 18/06 (2006.01) B22C 9/04 (2006.01) F02F 7/00 (2006.01)

Patent

CA 1312187

ABSTRACT A lost foam casting system is provided with vacuum lift of molten metal to an evaporative foam pattern assembly surrounded by unbonded particulate media such as sand in a flask. A gas permeable throat means is provided between the sand and a vertical fill passage to apply vacuum from the sand to the the fill passage such that molten metal is vacuum lifted through the fill passage to the foam pattern assembly, such that the foam material vaporizes as the molten metal advances upward and is replaced by the metal in the shape of the pattern assembly.

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