If the wire stick-out is too long, the wire will overheat and melt in sections, resulting in an unstable welding process, increased spatter, poor weld bead formation, and reduced gas protection of the molten pool. In the case of continuous arc welding with gas shielding during the root pass,

The main reason why novice welders can't match the current and voltage is that they don't know the relationship between the two, and they don't know what role they play. Current is to control the weld depth (current can also be understood as the wire feed speed, the greater the current, under the condition of constant voltage).

First of all, to just come in the friend to introduce the introduction of argon arc welding, two bonded welding, plasma welding, laser welding, the working principle of each and its advantages. Convenient to learn or to enter the processing industry bosses to choose. Argon arc welding argon arc welding arc using high-pressure breakdown of the arc starting method