Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
39
5.7.2 Drawn Arc Method – Visual Inspection
Inspection and testing of the weld is restricted in this manual to the visual inspection of welds. A description of
the mechanical and technological tests would go beyond the scope of the manual.
+
See EN ISO 14555
3
for detailed information in this regard.
3
EN ISO 14555: Welding Arc stud welding of metallic materials (2006)
Faulty weld #4.
Bead single-
sided.
Corrective measures:
Eliminate blowing effect by
applying compensation earth ground or correcting
earth ground terminals.
Perfect weld.
Bead is even, glossy
and closed. Stud length after welding
within tolerance.
Corrective measures:
Not necessary. No alteration to
the electrical and mechanical parameters.
Faulty weld #1.
Constriction of the
weld, stud too long.
Corrective measures:
Increase plunge distance; check
lift; check centering of the ceramic ferrule. Decrease weld
current and/or weld time.
Faulty weld #2.
Feebly formed,
uneven bead with a dull surface.
Stud too long.
Corrective measures:
Increase weld time and current.
Possibly dry ceramic ferrules in oven.
Faulty weld #3.
Bead single-sided,
undercutting.
Corrective measures:
Eliminate blowing effect, check
centering.
Faulty weld #4.
Bead low, surface
glossy with intense spattering. Stud
too short.
Corrective measures:
Decrease weld time and current;
adjust plunge distance and/or damping.
Summary of Contents for ArcCharger N550C DOMESTIC
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