Control system for electromagnetic casting of metals

Abstract From the Canadian patent

The present invention relates to a process and apparatus for controlling an electromagnetic casting system. The process and apparatus utilize at least one sense loop and an electrical parameter relating to the sense loop e.g. the mutual inductance between the sense loop and a containment inductor, to control during casting the height of the contained head of molten material and/or the ingot size. Preferably at least one sense loop is, positioned in the air gap between the containment inductor and the outer surface of the forming ingot or the molten metal head in the vicinity of the liquid-solid interface.