PRECAST ONE PIECE UPPER CASTABLE RING FOR INDUCTION FURNACES

摘要

An upper ring for an induction furnace. The upper ring is cast as one piece in a holder off of the furnace. The precast upper ring may be used as a replacement for the cast in place upper rings present on previously installed furnaces or may be used in the construction of new furnaces. The electromagnetic induction coil of the furnace may be modified to include cooling turns at its upper end when the holder with the one piece cast upper ring is installed on the furnace.