Analyses of electromagnetic-thermal coupling field for high frequency induction heating process of steel plate

Static induction heating of steel plate is studied,2D numerical model of electromagnetic-thermal coupling is developed by COMSOL Multi-Physics software,and the numerical results of temperature agree with experimental data.Distributions of electromagnetic field and temperature field in the heating process of the steel plate are studied.After the inductor has been fitted with a magnetizer,the Joule heat generated by eddy currents is converged under the inductor,and the heat efficiency is improved.Finally,the influences of the process parameters of induction heating on temperature are studied,and the experimental results show that,under the conditions that the other parameters remain unchanged,the higher the current of the inductor and the current frequency are,the faster the plate is heated,and the bigger the gap between the inductor and the plate is,the slower the plate is heated.