Spot welding on how welding? How can we not burn the head.
Galvanized sheet on the surface of galvanized layer, it is easy to bond on the electrode during welding, which leads to the decrease of electrode conductivity, thus affecting the welding. If there are too many impurities in the electrode, it can not be welded. Therefore, when welding galvanized material, it is necessary to constantly grind the electrode, or replace the electrode material better electrode.
Welding of galvanized steel, tungsten electrode material can be used with, you can try, we have also encountered such a problem, then consulted the Kunshan Hong Kong company for ginger, the electrode head problem was solved, you can also try, the company service attitude is good.
Zinc coating melting point is too low, not good welding, can use capacitor storage spot welder, the effect is better.