FORFARANDE OCH ANORDNING FOR KONTINUERLIG ELLER HALVKONTINUERLIG GJUTNING AV METALLER

摘要

In electromagnetically casting metals and alloys particularly copper and copper alloys, the position of a solidification front (25) at the surface of the ingot (C) being cast is adjusted by variable cooling to vary the rate at which heat is extracted from the ingot. This may be accomplished by intermittently turning the flow of coolant which is applied to the surface of the ingot on and off; alternatively the coolant supply is servo-controlled to vary the rate intermittently; alternatively coolant is supplied from a manifold whose position is axially adjustable to vary the position of the solidification front without modifying the electromagnetic field created by the inductor (11).