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Poor welding properties
Cause:
Incorrect welding parameters
Remedy:
Check the settings
Cause:
Poor connection to earth (ground)
Remedy:
Ensure good contact to workpiece
Cause:
Not enough shielding gas, or none at all
Remedy:
Check the pressure regulator, gas hose, gas solenoid valve and torch
gas connection. On gas-cooled welding torches, inspect the gas seals,
use a suitable inner liner.
Cause:
Connections leaking
Remedy:
Tighten connections
Cause:
Contact tube does not fit or is damaged
Remedy:
Change the contact tube
Cause:
Wrong wire alloy or wrong wire diameter
Remedy:
Check the wirespool 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:
Gas nozzle soiled
Remedy:
Remove welding spatter
Cause:
Turbulence caused by too high a rate of shielding gas flow
Remedy:
Reduce amount of shielding gas, recommended:
shielding gas quantity (l/min) = wire diameter (mm) x 10
(e.g. 16 l/min for 1.6 mm welding wire)
Cause:
Too large a distance between the contact tube and the workpiece.
Remedy:
Reduce the distance between the contact tube and the workpiece
(approx. 10-15 mm)
Cause:
Tilt angle of the welding torch is too great
Remedy:
Reduce the tilt angle of the welding torch
Cause:
The wirefeed components do not match the welding wire diameter
Remedy:
Use the correct wirefeed components
Cause:
Loss of gas or extraneous air
Remedy:
Check leak-tightness of blow-through line and blow-through valve.
Check closure seal of blowthrough line (push-on nipple)
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