... protection 5. well adapted 6.heating fast. saw blade welding machine,saw blade heating equipment,saw blade welding.Application:1. Heat shapingA, All ... , knife, scissors, pliers and all kinds of axis, cam wheel, chain wheel, gear wheel, valve, ball pin , Etc. and hardening of ... security,lower than the voltage of 36V,from high-voltage electric shock hazard.6. Heating efficiency up to 90% more than ...