Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1988-08-30
1990-02-20
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
164197, 164499, B22D 1806, B22D 1914
Patent
active
049017810
ABSTRACT:
A method of casting a metal matrix composite involves countergravity filling a bottom-gated casting mold from an underlying, initially homogenous, two-phase melt of solid reinforcing particles in a molten metal while continuously inductively stirring the melt during countergravity filling of the mold to minimize subsequent clumping or agglomeration of the reinforcing particles therein during mold filling. After the casting mold is filled, the melt in the mold may be inductively stirred during solidification therein to minimize subsequent clumping or agglomeration of the reinforcing particles in the solidifying melt. A cast metal matrix composite having the reinforcing particles uniformly dispersed in a metal matrix and substantially free of objectionable clusters of the reinforcing particles in the metal matrix is thereby provided.
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Metal Matrix Composites for Automobiles, Society of Automotive Engineers, vol. 94, No. 12, 1986.
General Motors Corporation
Seidel Richard K.
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