Sand mold and apparatus for reduced pressure casting

Details Sand mold and apparatus for reduced pressure casting Sand mold and apparatus for reduced pressure casting

1984-01-27

1986-08-19

Godici, Nicholas P.

Metal founding

Means to apply vacuum directly to work or to hold or...

Means applying vacuum or suction directly to molten casting...

164350, 164360, 164361, 164363, B22C 902, B22C 908, B22D 1806

Patent

active

046063960

ABSTRACT:
Casting metal in rigid, self supporting, gas permeable molds with one or more mold cavities for molding one or more parts, in which the mold cavities have gate passages with their lower open ends at the lower surface of the mold, by submerging the lower ends of the gate passages beneath the surface of molten metal and applying a reduced pressure to the upper surface of the mold to fill the mold cavities with molten metal to produce unconnected metal parts or groups of parts.

REFERENCES:
patent: 1291390 (1919-01-01), Broadbent
patent: 1591094 (1926-07-01), Mantei
patent: 1653232 (1927-12-01), Smith
patent: 2476296 (1949-07-01), Hardy
patent: 2908054 (1959-10-01), Wilkins
patent: 2923040 (1960-02-01), Goodwin et al.
patent: 3628598 (1971-12-01), MacNeill et al.
patent: 3863706 (1975-02-01), Chandley et al.
patent: 3900064 (1975-08-01), Chandley et al.
patent: 4112997 (1978-09-01), Chandley et al.

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