High frequency welding machine is different from other welding machines. Its purpose and function are not just single welding. High frequency welding can be used not only for the welding of various metal materials, but also for diathermy, melting, heat treatment and other processes. Welding is just one of its many uses.
The working principle is:
First, in the high-frequency machine, a set of unique electronic circuits convert the low-frequency AC transmitted from the power grid into high-frequency AC. After the high-frequency current is added to the induction coil, it is converted into a high-frequency magnetic field by using the principle of electromagnetic induction and acts on the metal object in the magnetic field. Using the eddy current effect, an induced current proportional to the magnetic field intensity is generated in the metal object. This eddy current is affected by the skin effect. The higher the frequency, the more concentrated it is with the surface of the metal object. When eddy current flows in a metal object, it will generate heat by using the principle of current thermal effect with the help of the inherent resistance value. This heat is generated directly inside the object, so the heating speed is fast and the efficiency is high.
