The Numerical Computation of Coupled Problem for the Electromagnetic and Thermal Field within the Hardening Processes of Valve Guides Through Electromagnetic Induction

This paper presents the numerical modeling of the coupled electromagnetic and thermal field question within the induction hardening of inner cylindrical surface. In order to solve the coupled field problem accomplished into induction equipments during hardening processes, the numerical computation has been performed in two-dimension (2D) using the finite element methods (F.E.M.). Theobtained results provide usefull information regarding the halffinished product heating during hardening process, the over heating of thin layers, the geometrical configuration of the inductor as well as the technological requirements correlated with electricalparameters which represents an active tool to setup the induction heating equipment in order to get the best results during hardening process.