NUMERICAL-SIMULATION OF CONTINUOUS INDUCTION STEEL BAR END HEATING WITH MATERIAL PROPERTIES DEPENDING ON TEMPERATURE AND MAGNETIC-FIELD

The continuous induction steel bar end heating is investigated by mean s of numerical calculations. A numerical model is used for the calcula tion of the three-dimensional eddy current and the heating process, Th e differential equations describing the electromagnetic field are inte grated as an A-Q, formulation, For the calculation of the temperature fields the Fourier's heat-conduction equation is used. On principle fo r the numerical solution the finite element method is used, The effect of material properties depending on temperature and magnetic field ar e taken into consideration in an iterative manner, The results of simu lation correspond well to experimental data and give good transparent of the process. The computing time, however, is too long for an effect ive realization of optimization processes.