CEA Z Serie Manual De Instrucciones página 26

Z - NKL
12.3 Welding trouble shooting
Defect
• Holes burnt in workpiece
• Spatter
• Excessive indentation on the pieces
• Pieces only stuck together
26
Cause
• Squeeze time too short
• Excessive welding current
• Insufficient electrode force
• Unsteady contact between the pieces or
between the electrodes and them
• Dirt between the pieces or between the
electrodes and the pieces
• Excessive welding current
• Squeeze time too short
• Insufficient electrode force
• Dirt between the pieces
• Insufficient cooling
• Insufficient diameter or deformed electrode tips
• Excessive electrode force • Excessive welding current
• Faulty pieces alignment
• Insufficient welding current
• Squeeze time too short
• Unsteady contact between the pieces
• Unsteady contact or deformed electrode tips
• Welding time too short
• Excessive electrode force
Remedy
• Increase squeeze time
• Reduce the value of welding current
• Increase electrode force
• Increase electrode force
• Clean them with emery cloth or other suitable
means
• Reduce the value of welding
current
• Increase squeeze time
• Increase electrode force
• Clean them with emery cloth or other suitable
means
• Check cooling circuit
• Replace the electrodes or reset tip diameter
to correct size
• Decrease electrode force • Reduce the value of welding
current
• Correct the pieces position
• Increase the value of welding
current
• Increase squeeze time
• Increase electrode force
• Replace the electrodes or reset tip diameter
to correct size
• Increase the value of
welding time
• Decrease electrode force