Patent ID: 8769993
Filing Date: 2014-07-08
Classification: B22D,C01B,C30B

Abstract:
1. A silicon electromagnetic casting apparatus including: a conductive bottomless cold mold in which part thereof in an axial direction is divided into a plurality of elements along a circumferential direction; and an induction coil surrounding the mold, in which silicon is melted through electromagnetic induction heating by means of the induction coil and is pulled down to be solidified, and further comprising: a plasma torch as a heating source installed above the cold mold so as to be raised or lowered, the plasma torch generating a transferable plasma arc in continuous casting; and a top heater configured so as to face a top surface of the molten silicon in the cold mold, the top heater generating heat through electromagnetic induction by means of the induction coil in a final solidification step at which casting ends, the top heater comprising two or more divided heating members.