Countergravity casting method and apparatus

Details Countergravity casting method and apparatus Countergravity casting method and apparatus

B - Operations, Transporting

22

D

22/183, 22/74

B22D 18/06 (2006.01) B22D 27/08 (2006.01)

Patent

CA 1326587

COUNTERGRAVITY CASTING METHOD AND APPARATUS Abstract Of The Disclosure A method for the differential pressure, countergravity casting of molten metal includes applying a differential pressure to urge molten metal through a constricted inlet passage into a mold cavity of a mold from an underlying molten metal pool, withdrawing the mold from the pool after the mold cavity is filled with the molten metal, holding the molten metal in the mold by combined differential pressure/molten metal surface tension holding action until the molten metal solidifies in the constricted inlet passage of the withdrawn mold or until the mold can be inverted. The differential pressure can be released after the metal solidifies in the inlet passage or after the mold is inverted to allow the molten metal to solidify under ambient pressure.

604845

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