The equipment is composed of five systems: induction heating system, auxiliary insulation system, gas preheating system, cooling system, main control system. Induction heating adopts the industry’s most advanced medium frequency induction heating power supply front uncontrollable full bridge rectifier +IGBT (Infineon) chopper control technology, its biggest advantage is no high order harmonic interference, no pollution to the grid; High power factor, high efficiency, good energy saving effect; Digital phase lock technology, high frequency stability. The control system adopts advanced PLC+ touch screen control system, with perfect protection function, making the operation more simple and convenient, and the system more stable and reliable. The control mathematical model adopts advanced PID self-learning fuzzy control to keep the temperature control accuracy at ±1℃.