Electrical efficiency of induction contour hardening systems

The paper deals with the mathematical modeling of induction contour hardening of gear wheels. Uniformity criteria of obtained contour profile are discussed. In order to determine the electrical efficiency of the process its first stage: induction heating is considered. Numerical modelling of coupled non-linear electromagnetic and temperature fields are described. In order to evaluate accuracy of the proposed approach exemplary computations of the full process are provided. Results are compared with measurements and satisfactory accordance is achieved