The releasing of corroded structural bonds is not a simple task. Ease of stuck, rusty, cemented screw bonds with hand is particually impossible. For this problem we offer a new dealing, the induction heater. The operating of induction heaters distributed by us simplified: heat develops directly in the work piece, a mechanical contact isn’t necessary. Its advantage against traditional inductioning processes that the surface power is bigger, so it offer heat treatment options that other heating processes don’t. Their use is simple, thanks to their compact design they are mobile, and they can be functionally used in every workshop.