The medium frequency induction furnace is an advanced heating and melting equipment, widely used in the heating, melting and casting of metal materials. Its operation is based on the principle of electromagnetic induction: alternating current of medium frequency generates an alternating magnetic field in the inductor, which induces an electric current inside the metal workpiece to achieve rapid heating. The equipment is mainly composed of a medium frequency power supply, an inductor and a control system, which can accurately control heating parameters to meet different process requirements. It is suitable for melting various metals such as steel, iron, aluminum and copper, and plays an important role in aerospace, automobile manufacturing and other fields.