1, the welding process is to generate arc discharge between the two electrodes, the use of arc heat to melt the metal to reach the two welding parts bonding process. The power input and output of the welding equipment is called the two terminal of the output.

　　2, arc welding method;

　　Arc welding, including: hand arc welding, submerged arc welding, tungsten arc gas arc welding,

　　Plasma arc welding, gas shielded arc welding, etc.. The majority of arc welding is a heat source which is burning between the electrode and the work piece. In the formation of the joint can be us