Working principle of high frequency quenching equipment

High-frequency quenching equipment adopts induction heating. The principle of induction heating is: the workpiece is placed in the inductor, and the inductor is generally a hollow copper tube that inputs intermediate frequency or high frequency alternating current (1000-300000Hz or higher). Generate an alternating magnetic field to generate an induced current of the same frequency in the workpiece. The distribution of this induced current in the workpiece is uneven, strong on the surface, but weak inside, and close to 0 in the center, using this skin effect , can rapidly heat the surface of the workpiece, and the surface temperature rises to 800-1000ºC in a few seconds, while the core temperature rises very little.