Countergravity casting apparatus and method with...

B - Operations – Transporting – 22 – D

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B22D 23/00 (2006.01) B22D 18/06 (2006.01) B22D 39/00 (2006.01)

Patent

CA 2016810

COUNTERGRAVITY CASTING APPARATUS AND METHOD WITH MAGNETICALLY ACTUATED VALVE TO PREVENT MOLTEN METAL RUN-OUT Abstract Of The Invention The casting apparatus and method include a magnetically responsive valve disposed in the molten metal inlet passage of the mold for movement between an open position during mold filling and a closed position after mold filling and during removal of the mold from the underlying molten metal pool to prevent run-out of molten metal from the metal-filled mold cavity. The valve is moved to the closed position by a magnetic force exerted thereon by permanent magnets or an electromagnet disposed around the inlet passage below the valve.

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