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Poor weld properties
Cause:
Incorrect welding parameters
Remedy:
Check the settings
Cause:
Grounding (earthing) connection is incorrect
Remedy:
Check the grounding (earthing) connection and terminal for correct
polarity
The welding torch becomes very hot
Cause:
The design dimensions of the torch are not sufficient for this task
Remedy:
Respect the duty cycle and loading limits
Weld-seam porosity
Cause:
Spatter accumulating in the gas nozzle, causing inadequate gas-shiel-
ding of the weld-seam
Remedy:
Remove the welding spatter
Cause:
Either the shielding-gas hose has holes in it, or it is not connected up
properly
Remedy:
Change the shielding gas-hose
Cause:
The O-ring seals on the connection points are cut or defective
Remedy:
Change the O-ring seals
Cause:
Moisture / condensate in the shielding-gas hose
Remedy:
Dry the shielding-gas hose
Cause:
Shielding-gas flow is either too high or too low
Remedy:
Correct the shielding-gas flow
Cause:
Too much parting agent applied
Remedy:
Wipe off excess parting agent / apply less parting agent
Poor ignition properties
Cause:
Unsuitable tungsten electrode (e.g. WP electrode for DC welding)
Remedy:
Use suitable tungsten electrode
Cause:
Loose clamping nuts, gas lens or clamping sleeve
Remedy:
Tighten clamping nuts, gas lens or clamping sleeve
Cracks in gas nozzle
Cause:
Tungsten electrode does not protrude far enough out of gas nozzle
Remedy:
Allow tungsten electrode to protrude further out of gas nozzle
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