Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1992-09-01
1993-12-21
Batten, Jr., J. Reed
Metal founding
Process
Shaping liquid metal against a forming surface
164122, 164255, 164359, 164360, 164361, 164363, B22C 902, B22C 908, B22D 1806
Patent
active
052714519
ABSTRACT:
Apparatus and method for countergravity casting a melt employs a particulate mass disposed in a container about a mold having a mold cavity, an ingate passage communicated to the mold cavity for supplying the melt to the mold cavity, and a separate, preformed riser-forming member connected to the mold so as to communicate to an isolated and/or enlarged region of the mold cavity needing additional melt supply during solidification in the mold. The mold ingate passage and a source of the melt are communicated to conduct the melt through the ingate passage to the mold cavity to fill the mold cavity with the melt and form a riser of melt in the particulate mass. The riser of melt provides a source of additional melt for supply, as necessary, to the isolated and/or enlarged region during solidification of the melt in the mold cavity to accommodate melt shrinkage thereat.
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Chandley George D.
Redemske John A.
Batten, Jr. J. Reed
General Motors Corporation
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