27th IFHTSE CONGRESS & EUROPEAN CONFERENCE ON HEAT TREATMENT 2022

In order to avoid distortion of long and thin tools made out of high-speed steels during heat treatment, a continuous inductive heat treatment can be applied. A classical inductive heat treatment device consists of several inductors, which are aligned, in a row with a certain distance to each other. Due to this configuration, the material can undergo temperature variations during heat treatment resulting in undefined dwell times at the requested temperature. Consequently, the hardness varies over the cross section of the bar material. In this paper, a new configuration, which shows significant improvement, will be presented and discussed. The new configuration was developed based on Gleeble experiments and Finite Element simulations using DEFORM. The results of experiments and simulations were verified on a test device.