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Poor welding properties
Cause:
Wrong wire alloy and/or wrong wire diameter
Remedy:
Check the wire spool that has been inserted; check the weldability of
the base metal
Cause:
The shielding gas is not suitable for this wire alloy
Remedy:
Use the correct shielding gas
Cause:
Unfavourable welding conditions: Shielding gas is contaminated (by
moisture, air), inadequate gas shielding (weld-pool "boiling", drau-
ghts), contaminants in the workpiece (rust, paint, grease)
Remedy:
Optimise the welding conditions
Cause:
Welding spatter in the gas nozzle
Remedy:
Remove the welding spatter
Cause:
Turbulence caused by too high a rate of shielding-gas flow
Remedy:
Reduce the shielding-gas flow-rate. Recommendation:
Shielding-gas flow-rate (l/min) = wire diameter (mm) x 10
(e.g. 16 l/min for a 1.6 mm wire)
Cause:
Too large a distance between the torch and the workpiece.
Remedy:
Reduce the distance between the torch and the workpiece (recom-
mended: 10-15 mm)
Cause:
Tilt angle of the welding torch is too large
Remedy:
Reduce the tilt angle of the welding torch
Cause:
Wrong diameter of wirefeed components
Remedy:
Use wirefeed components of the correct diameter
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