Common Fault Causes And Troubleshooting (Maintenance Methods) Of Tungsten Argon Arc Welding Machine/TIG Welding

Common Fault Causes And Troubleshooting (Maintenance Methods) Of Tungsten Argon Arc Welding Machine/TIG Welding

Tungsten inclusion

1. Contact arc striking (arc striking with high frequency oscillator or high voltage pulse generator).
2. Tungsten electrode melting (. Reduce welding current or increase tungsten electrode diameter, tighten tungsten electrode collet and reduce tungsten electrode extension length; replace cracked or torn tungsten electrode).

Poor gas protection effect

1. The purity of protective gas is low (argon with purity (volume fraction) of 99.99% is used).
2. The air supply in advance and lag time are short (there are enough air supply in advance and lag time).
3. Insufficient gas flow (increase gas flow).
4. The gas pipe is damaged and leaking (repair the damaged gas pipe).

Arc instability

1. There is oil stain on the weldment (clean the weldment).
2. The joint groove is too narrow (widen the joint groove and shorten the arc length).
3. Tungsten electrode pollution (remove the polluted part of tungsten electrode).
4. The tungsten electrode diameter is too large (use the correct tungsten electrode and collet).
5. The arc length is too long (lower the nozzle distance and shorten the arc length).

Tungsten electrode loss is too fast

1. Poor gas protection and tungsten electrode oxidation (clean the nozzle, shorten the nozzle distance and appropriately increase the argon flow).
2. Reverse polarity connection (increase the tungsten electrode diameter or change to positive polarity connection).
3. The collet is overheated and deformed (polish the tungsten electrode and replace the collet).
4. The diameter of tungsten electrode is too small (replace with large diameter tungsten electrode).
5. When welding is stopped, the tungsten electrode is oxidized (increase the lag air supply time, not less than 1s / 10A).