This machine uses a dry-type transformer and is equipped with a pneumatic clamping mechanism. This mechanism can clamp the tube on the electrode, use low voltage and high current to short-circuit the metal shell, thereby heating and annealing the part, which prepares the part for further bending and forming. And the machine can control delayed power-on, power-on timing and delayed power-off. Therefore, it is possible to avoid the generation of arc between the component and the electrode, and the surface finish will not be damaged. The transformer has a series of tap change functions, which can change the output voltage according to different needs. Suitable for annealing and treatment of components composed of copper, aluminum, stainless steel or iron cladding.