IGBT CO2 - Post-Welding Tasks

30 Chapter 2 Installation and Cabling
Ehave Series Full Digital IGBT CO
2
/MAG/MMA Multifunctional Inverter Welder User Manual
Table 2-6 describes the issues that occur when the welding conditions are abnormal.
Table 2-6 Abnormal welding conditions
Abnormal Welding Condition
Result
Wire stick-out is excessive.
The arc is lengthened.
The bead is widened.
The protection performance of the gas decreases.
Wire stick-out is inadequate.
The arc is shortened.
Spatters occur.
The arc voltage is excessively
high.
The arc is lengthened.
The bead is widened.
The fusion depth and reinforcement are reduced.
The arc voltage is excessively low.
Wire sticking and spatters occur.
The bead is narrowed.
The fusion depth and reinforcement are reduced.
The welding current is excessively
high.
The bead is widened.
The fusion depth and reinforcement are increased.
The welding speed is excessively
high.
The bead is narrowed.
The fusion depth and reinforcement are reduced.
Wire stick-out: distance between the tip and the workpiece to be welded
2.8 Post-welding Tasks
Turn off the main switch of the gas cylinder and then turn off the power switch.
Turn off the power supply of the welder and then the power supply of the distribution box.
 Note
Do not turn off the power supply of the welder until 3 to 5 minutes after welding is complete. This
facilitates internal cooling of the welder.