Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1994-02-15
1996-06-11
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
164337, 251304, F16K 500, B22D 3302
Patent
active
055247008
ABSTRACT:
A supply vessel containing a molten bath has a discharge opening which is controlled by a valve. The discharge opening is located in a vertical plane and has a horizontal axis. The valve includes a set of valve plates having through openings for the passage of molten material. The valve plates are rotatable relative to one another in order to bring the through openings into and out of register and thus open and close the valve. One of the valve plates sits adjacent the discharge opening and is stationary while another of the valve plates is remote from the discharge opening and is freely rotatable. A mold having an inlet, a casting cavity and feeders between the inlet and casting cavity is brought into engagement with the freely rotatable valve plate. The mold is positioned with the casting cavity below the upper surface of the molten bath and with the feeders below the casting cavity. The valve is opened and the casting cavity filled with molten material via the mold inlet and the feeders. When the casting cavity is full, the mold is rotated on the horizontal axis of the discharge opening in order to bring the feeders above the casting cavity. The freely rotatable valve plate rotates with the mold so that the valve remains open during rotation of the mold. The valve is closed after the molten material in the casting cavity has solidified. The mold is removed from the supply vessel once the entire contents of the mold are solid.
REFERENCES:
patent: 971604 (1910-10-01), Griffith
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patent: 3774668 (1973-11-01), Iten et al.
patent: 3834416 (1974-09-01), Parkison
patent: 4019562 (1977-04-01), Shiraiwa et al.
patent: 4554948 (1985-11-01), Bergmann
patent: 4733714 (1988-03-01), Smith
patent: 5386966 (1995-02-01), Gosh
AFS Transactions, pp. 785-791, "Low Pressure Sand Casting . . . " by R. A. Smith et al.
EB Bruhl Aluminiumtechnik GmbH
Herrick Randolph S.
Seidel Richard K.
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