Countergravity casting apparatus

Details Countergravity casting apparatus Countergravity casting apparatus

1988-06-24

1989-05-09

Lin, Kuang Y.

Metal founding

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

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

164306, B22D 1806

Patent

active

048280119

ABSTRACT:
Immersion-type vacuum countergravity casting apparatus having a vacuum chamber including spring means for pressing the mold portions sealingly together and/or resisting destructive inward flexure of the mold. A split vacuum chamber, including a floating lower skirt portion, avoids the creation of stress concentration sites between the chamber and the mold.

REFERENCES:
patent: 2379401 (1945-06-01), Poulter
patent: 2845669 (1958-08-01), Hackett et al.
patent: 2923040 (1960-02-01), Goodwin et al.
patent: 3774668 (1973-11-01), Iten et al.
patent: 4340108 (1982-07-01), Chandley et al.
patent: 4508157 (1985-04-01), Belliveau et al.
patent: 4632171 (1986-12-01), Almond
patent: 4658880 (1987-04-01), Voss

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