Induction heating is an advanced metal heating technology and one of the energy-saving and emission-reducing technologies advocated by the country. Compared with gas combustion heating or energized heating, induction heating has significant advantages such as non-contact, fast speed, high efficiency, simple procedures, and easy automation. It also has the advantages of zero emission, no pollution, and high efficiency and energy saving, especially induction brazing. Realize no open flame welding, high welding efficiency and good consistency, which is conducive to mass production