Ways to reduce the influence of high frequency currents on the human body under induction surfacing

Devices with thermal and electromagnetic shields for induction heating and surfacing of machine parts using a ferrite magnetic circuit with a single-turn inductor, devices with double-turn and three-turn inductors, in which the surfacing zone is completely closed from the influence on workers are designed. This allows to improve the working conditions, as well as to develop new technological processes using high frequency currents. It is shown that the use of thermal and electromagnetic screens can reduce the surfacing time by 10–20 s and decrease the energy consumption by 15–20%, depending on the powdered hard alloy, taking into account health and safety issues.