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Table 10-1 – Weld Troubleshooting
FAULT OR DEFECT
CAUSE
AND/OR CORRECTIVE ACTION 1)
POROSITY A.
OIL, HEAVY RUST, SCALE, ETC. ON PLATE
B. WIRE – MAY NEED WIRE HIGHER
IN Mn AND Si C.
SHIELDING PROBLEM; WIND, CLOGGED OR SMALL
NOZZLE,
DAMAGED GAS HOSE, EXCESSIVE GASFLOW, ETC. D.
FAILURE TO REMOVE GLASS BETWEEN WELD PASSES E.
WELDING OVER SLAG FROM COVERED ELECTRODE 2)
LACK OF PENETRATION A.
WELD JOINT TOO NARROW B.
WELDING CURRENT TOO LOW; TOO MUCH C.
ELECTRODE STICKOUT WELD PUDDLE ROLLING IN
FRONT
OF THE ARC 3)
LACK OF FUSION A.
WELDING VOLTAGE AND/OR CURRENT TOO LOW B.
WRONG POLARITY, SHOULD BE DCRP C.
TRAVEL SPEED TOO LOW D.
WELDING OVER CONVEX BEAD E.
TORCH OSCILLATION TOO WIDE OR TOO NARROW F.
EXCESSIVE OXIDE ON PLATE 4)
UNDERCUTTING A.
TRAVEL SPEED TOO HIGH B.
WELDING VOLTAGE TOO HIGH C.
EXCESSIVE WELDING CURRENTS D.
INSUFFICIENT DWELL AT EDGE OF WELD BEAD Continued
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