Countergravity casing apparatus and method with magnetically act

Details Countergravity casing apparatus and method with magnetically act Countergravity casing apparatus and method with magnetically act

1989-07-06

1990-10-09

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164255, 1641471, 164337, 222504, B22D 1806, B22D 2702

Patent

active

049614550

ABSTRACT:
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.

REFERENCES:
patent: 2243293 (1941-05-01), Stahl
patent: 2991518 (1961-07-01), Schaefer
patent: 3032841 (1962-05-01), Sylvester
patent: 3090090 (1963-05-01), Woodburn, Jr.
patent: 3443629 (1969-05-01), Ebeling
patent: 3529657 (1970-09-01), Bucy
patent: 3532154 (1970-10-01), Balevski
patent: 3774668 (1973-11-01), Iten et al.
patent: 3905419 (1975-09-01), Tenner
patent: 4340108 (1982-07-01), Chandley et al.
patent: 4589466 (1986-05-01), Chandler et al.
patent: 4862945 (1989-09-01), Greanias et al.

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