Abstract: An automatic vibration molding machine for green sand mold. The green sand of a flask may be compressed and formed by the pressure force of expansion of pressure air-spring means and the vibration force of vibration motor mounted on the vibration head, as well as the vibration which is propagated to a pattern from an upper frame via a lower frame, an ascent and descent cylinder, and an ascent and descent table.

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.

Abstract: Foundry sand molding apparatus for simultaneously forming cope and drag molds. The cope and drag molds are substantially simultaneously pre-jolted and jolt-squeezed to assure uniform density in the molds. Thereafter the apparatus laterally transfers the cope and drag molds into vertical alignment at an assembly station, with the drag mold being inverted and lowered during lateral transfer of same.

Abstract: Foundry sand molding apparatus includes a head and table between which sand molds are squeezed. The head is rotatably indexable about a horizontal axis above the table, and carries different cope and drag squeeze boards selectively alignable with the table for producing different cope and drag sand molds on the same apparatus. The head has a sand supply passage therethrough and is rotatably indexable to a sand supply position with the passage vertically aligned with the table for supplying sand therethrough to a flask supported on the table. The head is rotatable in either of opposite directions from its sand supply position for selectively aligning either the cope or drag squeeze board with the table. Baffles extending across the sand supply passage perpendicular to one another are individually adjustable for adjusting the distribution of sand supplied through the passage.