10. TROUBLESHOOTING
17
EXAMPLE
TERM
CAUSE
Insufficient penetration
- Incorrect arc distance.
- Welding current too low.
- Wire speed to low.
- Welding line not central to butt.
- Wire size too large for application.
- Torch speed too slow.
- Contamination in the metal
(eg
rust).
- Shield gas breakdown.
- Incorrect arc distance.
- Area cooling down too fast.
- Unsteady torch movement.
- Worn wire tip.
- Current too high for material
thickness.
- Torch speed too slow.
Overlap
Pitting
Untidy weld
Burn through
Summary of Contents for 71091
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