Troubleshooting − Excessive Spatter; Troubleshooting − Porosity; Troubleshooting − Excessive Penetration - Hobart Handler 125 EZ Owner's Manual

8-8. Troubleshooting − Excessive Spatter
Possible Causes
Metal Thickness Selector switch set too
high.
Electrode extension (stickout) too long.
Workpiece dirty.
Dirty welding wire.
8-9. Troubleshooting − Porosity
Possible Causes
Wrong gas.
Dirty welding wire.
Workpiece dirty.
Welding wire extends too far out of nozzle.
8-10. Troubleshooting − Excessive Penetration
Excessive Penetration
Possible Causes
Excessive heat input.
Excessive Spatter − scattering of molten metal particles that
cool to solid form near weld bead.
Set Metal Thickness Selector switch to a lower selection.
Use shorter electrode extension (stickout).
Remove all grease, oil, moisture, rust, paint, undercoating, and dirt from work surface before welding.
Use clean, dry welding wire.
Eliminate pickup of oil or lubricant on welding wire from feeder or liner.
Porosity − small cavities or holes resulting from gas pockets
in weld metal.
Use welding grade shielding gas; change to different gas.
Use clean, dry welding wire.
Eliminate pick up of oil or lubricant on welding wire from feeder or liner.
Remove all grease, oil, moisture, rust, paint, coatings, and dirt from work surface before welding.
Use a more highly deoxidizing welding wire (contact supplier).
Be sure welding wire extends not more than 1/2 in (13 mm) beyond nozzle.
Excessive Penetration − weld metal melting through base metal
and hanging underneath weld.
Good Penetration
Set Metal Thickness Selector switch to a lower selection.
Increase travel speed.
Corrective Actions
Corrective Actions
Corrective Actions
S-0636
S-0635
S-0639
OM-923 Page 33