Rotary vacuum casting apparatus

Metal founding – Means to apply vacuum directly to work or to hold or... – Means applying vacuum or suction directly to molten casting...

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Details

164290, 425434, B22D 1300

Patent

active

047812370

ABSTRACT:
A method and apparatus for filling a mold having walls porous to gases by exposing external surfaces of the mold to a vacuum while filling the mold through an opening exposed to a higher pressure. The mold may be rotated at speeds sufficient for centrifugal forces to be produced to assist in filling cavities in the mold.

REFERENCES:
patent: 2964818 (1960-12-01), Reetz
patent: 3670802 (1972-06-01), Krick et al.
patent: 3818974 (1974-06-01), Eberle
patent: 4007772 (1977-02-01), Laedtke et al.
patent: 4063863 (1977-12-01), Hilmoe
patent: 4524817 (1985-06-01), Brugger et al.

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