Rectifying faults
Checklist for rectifying faults
56
099-000151-EW501
18.01.2013
Unstable arc
a
Material inclusions in the tungsten electrode due to contact with filler material or workpiece
#
Regrind or replace the tungsten electrode
a
Incompatible parameter settings
#
Check settings and correct if necessary
Pore formation
a
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
a
Unsuitable or worn welding torch equipment
#
Check size of gas nozzle and replace if necessary
a
Condensation (hydrogen) in the gas tube
#
Purge hose package with gas or replace
