The induction coil is made of stepping winding, this tech patent right is belong to Yinda.(201410229369.X) Ther copper pipe coil is middle AL-CU alloy which is called high purity oxygen free copper. The connecting between pipe is welded by silver based solder. All these features make the induction coil high performance and energy saving. The induction coil after sandblasting passivation and a series of processing, with German import high temperature insulating paint spraying three times, completely solve the problem of sparking between traditional induction coil. We adopted advanced processing between sensor water circle and effective coil,and solved the traditional sparking and discarhing problem in sensor water circle and effective coil proeffectively.The induction coil is the core component of the intermediate frequency electric furnace. After being energized, an eddy current is generated in the middle, and the metal placed in it is heated and melted rapidly. It is an executive component that heats, melts, and heats up the charge to provide energy. Its quality directly affects whether the charge can be heated quickly, whether it can achieve the expected goal, and whether the whole set of equipment can operate normally. The induction coil produced by our company refers to It is accumulated from domestic and foreign design data and years of experience data. After optimizing the design with a microcomputer, determine its basic parameters, such as the number of turns, copper tube specifications, the ratio of height to diameter, etc., to maximize the electrical efficiency. The entire induction coil has been shot blasted, passivated and picked. The conductivity and cooling effect are more superior, preventing the coil from being oxidized and clogged during use. The contact parts of the copper pipes are all insulated by high temperature resistant insulating materials. Our company's products have spread to most provinces and regions in the country, and some products are exported to Southeast Asia, West Asia, Central Asia, Africa and other places. The equipment far exceeds the general industrial standard in terms of operating efficiency, quality and reliability.