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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
Cause: Wrong wire alloy and/or wrong wire diameter
Remedy: 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”, draughts), 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(recommended: 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
Poor wirefeed
Cause: Braking force set too high
Remedy: Set the brake to a looser setting
Cause: Hole in contact tube is dislocated
Remedy: Exchange the contact tube
Cause: The wirefeed inner liner in the welding torch is defective
Remedy: Check the wire inner liner for kinks, dirt etc.
Cause: The wirefeed rollers are not suitable for the wire electrode being used
Remedy: Use suitable wirefeed rollers
Cause: The wirefeed rollers are exerting the wrong contact pressure
Remedy: Optimise the contact pressure
Cause: The wirefeed rollers are soiled or damaged
Remedy: Clean the wirefeed rollers, or exchange them for new ones
Cause: Inner liner dislocated or kinked
Remedy: Exchange the inner liner
Cause: The inner liner or wire inlet nozzle are of the wrong dimension
Remedy: Ensure that the inner liner or wire inlet nozzle are correctly dimensioned
Cause: The inner liner was kinked while being inserted
Remedy: When inserting the inner liner, only touch and hold it near the infeed tube
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