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FAULT
Weak Welding
Spatters of melted materials
Burned welds or welds showing
either craters or fissures
Pieces stuck weld on the
electrode
Welder electrodes and cables
overheating
Electrodes and connections
Secondary connection reduced
life and oxidation
POSSIBLE CAUSES
Low welding current
Low welding time
Too high electrodes force
Lacking electrodes maintenance or too
Insufficient contact with metal
Paint or dirt among pieces
Insufficient contact between pieces or
Too high welding current
Too high welding time
Too small electrodes diameter
Inadequate welding force
Electrodes faulty clamping of the pieces Check stroke and line up
Too high welding current
Inadequate welding force
Surface oxidation
Insufficient contact between parts or
Faulty pieces line up
Electrodes tips deformation
Too high welding current
Inadequate electrodes diameter
Inadequate welding force
Too high working rate
Too high welding current or welding
Welder designed for both maintenance
Under-sized electrode in comparison
Overheating caused by an inadequate
Too heating caused by a too high
POSSIBLE REMEDIES
Increase it
Increase it
Reduce pressure
Clean and line up the electrodes,
Increase the electrodes force
Clean the pieces
Increase the electrodes force by
Reduce it
Reduce it
Adjust diameter on the value shown on
Increase pressure
Reduce it
Increase welding pressure
Clean them by means of emery paper
Increase electrodes force
Correct it
Restore them to the correct size
Reduce it
Restore it to correct size
Increase the welding pressure
Reduce it
Reduce them
Choose a water cooled model for
Check both size and contact diameter
Carefully tighten the clamping screws
Reduce it
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