Patent ID: 6474404
Filing Date: 2002-11-05
Classification: B22D

Abstract:
A method for controlling and maintaining a temperature of a metal melt (10), the method comprising the steps of:measuring a melt temperature of a metal melt (10) contained in a vessel; comparing the melt temperature with a preset temperature range in the form of specified values; immersing a heating rod (20) into the metal melt (10), wherein the heating rod (20) comprises a refractory tubular shaped part (24) with a closed bottom and comprises an induction coil (1) arranged inside the refractory tubular shaped(24), the refractory shaped part (24) configured to be coupled to and heated by an electromagnetic alternating field of the induction coil (1); regulating the melt temperature by supplying heat or removing heat from the metal melt (10) such that the temperature of the metal melt (10) lies within the preset temperature range, wherein heat is transferred by heat conduction from a wall of the refractory tubular shaped part (24) into the metal melt (10), and wherein a material of the refractory shaped part has properties allowing inductive-heating of the refractory tubular shaped part without foreign heat and without a coupling material surrounding the refractory tubular shaped part (24) for coupling with the electromagnetic alternating field being present.