Unstable arc
~
Material inclusions in the tungsten electrode due to contact with filler material or workpiece
@
Regrind or replace the tungsten electrode
~
Incompatible parameter settings
@
Check settings and correct if necessary
Pore formation
~
Inadequate or missing gas shielding
@
Check shielding gas setting and replace shielding gas cylinder if necessary
@
Shield welding site with protective screens (draughts affect the welding result)
@
Use gas lens for aluminium applications and high-alloy steels
~
Unsuitable or worn welding torch equipment
@
Check size of gas nozzle and replace if necessary
~
Condensation (hydrogen) in the gas tube
@
Purge hose package with gas or replace
Rectifying faults
Checklist for rectifying faults
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