Electromagnetic casting apparatus

In an electromagnetic apparatus for the continuous or semicontinuous casting of metal ingots or billets, wherein a solid ring-type metallic electromagnetic inductor is provided to generate electromagnetic forces which control the shape of a column of molten metal disposed within the inner peripheral area of the inductor and wherein a coolant source is disposed around said metal column to direct coolant onto the surface of the metal so as to cause the solidification thereof, the improvement comprising an annular coolant jacket as said coolant source with the solid ring-type metallic electromagnetic inductor disposed immediately adjacent the column of molten metal as the inner wall of the annular coolant jacket with the inner peripheral area of the inductor exposed to the column of molten metal, the inductor thereby defining in part a coolant chamber within the coolant jacket so that the inductor is cooled by the coolant in the chamber.