INDUCTORS CALCULATION AND EXPERIMENTAL RESEARCH OF INDUCTION-HEATING MACHINES WITH MATCHING TRANSFORMERS
We classified the main types of heating applied in heat treatment of metal parts and considered their advantages and disadvantages, listing advantages of induction heating. We created a mathematical model allowing to calculate parameters of electromagnetic field in induction heating machines with special inductors, for example, inductors with additional conducting medium. This model was experimentally verified by studying induction heating machines used for hardening and comparing the experimental data with the results of theoretical calculation obtained with the help of the model. We suggest using new matching high-frequency transformers with magnetic cores made of amorphous or nanocrystalline alloys in induction heating equipment.