Patent ID: 6427752
Filing Date: 2002-08-06
Classification: B22D,C22B

Abstract:
A casting system with auxiliary cooling onto a semi-solid portion of the casting for producing a metal casting, the metal casting comprising a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free, segregation defect-free, and essentially free of voids caused by air entrapped during solidification of the metal from a semi-solid state to a solid state, the casting system comprising:an electroslag refining system; a nucleated casting system; and at least one auxiliary cooling system, comprising a coolant source and a coolant conduit, wherein the conduit is shaped to direct the coolant directly onto the semi-solid portion of the metal casting, so that the semi-solid portion of the casting is cooled in a manner sufficient to provide a casting microstructure that comprises a fine-grain, homogeneous microstructure that is essentially oxide- and sulfide-free, segregation defect-free, and essentially free of voids caused by air entrapped during solidification from a semi-solid state to a solid state.