9. Why do high-frequency welding? What are the characteristics of high-frequency welding?

Efficient and fast, high welding quality, energy saving and environmental protection, easy operation, and wide range of applications.
The disadvantages are high equipment cost, high technical requirements for operators, may produce electromagnetic interference, requirements for welding materials, small heat range, rapid calcination pit will cause welding cracks, and may cause electrical corrosion during the welding process.