The electric welding machine uses the high temperature arc generated when the positive and negative poles are short-circuited instantaneously to melt the solder on the electrode and the material to be welded, and the purpose of combining the objects to be contacted. Its structure is very simple, it is a high-power transformer.
Electric welding machines are generally divided into two types according to the type of output power, one is AC power and the other is DC. They use the principle of inductance, the inductance will produce huge voltage changes when it is switched on and off, and the high voltage arc generated when the positive and negative poles are instantaneously short-circuited is used to melt the solder on the electrode to make them achieve the purpose of atomic bonding.
