Method and apparatus for producing cast structures

Details Method and apparatus for producing cast structures Method and apparatus for producing cast structures

1995-06-07

1997-06-24

Hail, III, Joseph J.

Metal founding

Process

Shaping a forming surface

164361, 164 45, 164369, B22C 900, B22C 902, B22C 910, B22C 700

Patent

active

056410140

ABSTRACT:
The present invention relates to a method and apparatus for producing a cast structure. In one embodiment of the present invention an alloy casting mold has molten alloy injected therein to facilitate completely filling a part cavity within the mold. Further, an alloy charge pressure control device is utilized to reduce the charge pressure of the molten alloy during its injection into the mold cavity to minimize distortion and creep of the ceramic shell. In one form of the present invention the charge pressure control device removes excess alloy so as to reduce the head pressure of the molten alloy thereby eliminating the undesirable creep of the ceramic shell.

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