Weld Test - Miller Welder Owner's Manual

11-13. Weld Test

2 To 3 in
(51-76 mm)
1/4 in
(6.4 mm)
11-14. Troubleshooting − Porosity
Possible Causes
Arc length too long.
Damp electrode.
Workpiece dirty.
11-15. Troubleshooting − Excessive Spatter
Possible Causes
Amperage too high for electrode.
Arc length too long or voltage too high.
OM-245 849 Page 30
3
2 To 3 in
(51-76 mm)
2
2
1
Porosity − small cavities or holes resulting from gas
pockets in weld metal.
Reduce arc length.
Use dry electrode.
Remove all grease, oil, moisture, rust, paint, coatings, slag, and dirt from work surface before
welding.
Excessive Spatter − scattering of molten metal par-
ticles that cool to solid form near weld bead.
Decrease amperage or select larger electrode.
Reduce arc length or voltage.
1 Vise
2 Weld Joint
3 Hammer
Strike weld joint in direction
3
shown. A good weld bends over
but does not break.
1
Corrective Actions
Corrective Actions
S-0057-B