Induction hardening machine adopts the electromagnetic induction principle, make the parts in the alternating magnetic field cutting magnetic field line, on the surface to produce the current, according to the alternating current skin effect.

Solid State induction heating machine is with Siemens IGBT integrated circuit, frequency range 20-100KHZ. Mainly used in the induction heat treating, induction brazing welding, small size bar heating projects.

The process is to put an induction ring on the steel pipe part which is to be bent. The pipe head is jammed with a mechanical rotary arm, and the high density medium frequency current is fed into the induction ring to heat the steel pipe.