Countergravity metal casting apparatus and process

Details Countergravity metal casting apparatus and process Countergravity metal casting apparatus and process

1987-05-07

1988-12-20

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164 661, 164119, 164255, 164259, 164306, B22D 1806

Patent

active

047919779

ABSTRACT:
An apparatus and method for counter-gravity casting of molten metal, in a gas permeable mold with a fill passage upper end above the lateral communication of the passage with other mold cavities. The mold is filled by low pressure in a chamber sealed about the mold while the mold fill passage is communicated with the molten metal. Provision is made for maintaining, during filling, the upper part of the mold fill passage at a lower pressure than that in the chamber external to the mold.

REFERENCES:
patent: 2923040 (1960-02-01), Goodwin et al.
patent: 3818974 (1974-06-01), Eberle
patent: 3900064 (1975-08-01), Chandley et al.
patent: 4340108 (1982-07-01), Chandley et al.
patent: 4532976 (1985-08-01), Chandley et al.
patent: 4589466 (1986-05-01), Chandley et al.

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