What is an intermediate frequency induction heater?

In fact, the intermediate frequency induction heater is heated by electromagnetic induction like the high frequency induction heater, but the AC current is different. The heating principle of the intermediate frequency induction heater is that the workpiece is placed in the inductor. A hollow copper tube with high frequency alternating current (300-300000Hz or higher). The alternating magnetic field generates an induced current of the same frequency in the workpiece. The distribution of this induced current in the workpiece is uneven, it is strong on the surface, but very weak in the interior, and it is close to 0 in the center. This skin effect is used. , the surface of the workpiece can be heated rapidly, and the surface temperature rises to 800-1000ºC in a few seconds, while the temperature of the core rises very little. It is suitable for surface quenching of industrial metal parts, metal smelting, bar diathermy and other fields. It is to generate a certain induction current on the surface of the workpiece to rapidly heat the surface of the part, which can achieve the effect of rapid surface heating and even diathermy melting.