Model and optimization of induction heating for annealing rotationally symmetrical bodies

This paper deals with possibility of energy efficiency increase of annealing parts of rotors of gas turbines using induction heating. The efficiency is evaluated using mathematical model in SW Agros2D which allows 2D modeling of thermal and electromagnetic fields. The results are compared with the measurements. The influence of particular parameters (design the inductor, speed of rotation, supplying power and frequency) on the efficiency of heating is discussed.