OUTPUT CONTROL METHOD AND DEVICE OF WELDING ELECTRIC POWER

摘要

The device for minimizing the spatter and increasing the welding speed in CO2 arc welding, comprises the power supply section (2) for converting AC to DC; invertor (4) for generating AC according to the judge/control section after receiving DC from the power supply section; voltage generating section (5) for generating the welding voltage after receiving the signal of the invertor, transforming and rectifying the voltage; current detector (13) for detecting the current when the voltage of the section (5) is impressed to the mother material (8) via welding wire (7); judge/control section (24) for controlling the constant voltage when the welding current (E) is less than the arc judge current (F).