Harbor Freight Tools DUAL MIG 93793 - Manual (Page 22)

Page 22 For technical questions, please call 1-800-444-3353. SKU 93793
Weld Diagnosis
exceSS Or Burn-thrOuGh
Weld droops on top and
underneath, or falls through
entirely, making a hole.
prOper
Weld is visible underneath and
bulges slightly on top.
InaDequate
Weld does not contact the joint
fully, just on the surface.
Weld penetration
pOSSIBle cauSeS anD SOlutIOnS
excessive material at weld: 1.
Reduce wire feed speed.
Overheating:
2.
Increase welding speed and ensure that
welding speed is kept steady.
pOSSIBle cauSeS anD SOlutIOnS
Workpieces too thick/close: 1.
Joint design must allow weld to reach
bottom of groove and allow proper weld-
ing procedures.
Incorrect welding technique:
2.
Maintain 1 /
2
” or less stickout.
Keep arc on leading edge of weld pud-
dle.
Hold gun at proper angles as stated
under Holding The Torch on page 20.
Insufficient weld material:
3.
Increase wire feed speed.
Insufficient weld heat:
4.
Reduce Welding Speed.
Cross seCtIons
Weld not adhering properly
Gaps present between weld and previous bead or
between weld and workpiece. See areas below.
pOSSIBle cauSeS anD SOlutIOnS
Dirty workpiece: 1.
Make certain that workpiece is clean and
free from oil, coatings, and other residues.
Insufficient weld material:
2.
Increase wire feed speed.
Incorrect welding technique:
3.
Place stringer bead at correct place in
joint.
Adjust workpiece position or weld angle to
permit proper welding at bottom of work-
piece.
Pause briefly at sides when using a weave
bead.
Keep arc on leading edge of weld puddle.
Hold gun at proper angles as stated under
Holding The Torch on page 20.
Cross
seCtIon
Bend at joint
pOSSIBle cauSeS anD SOlutIOnS
Improper clamping: 1.
Make sure that pieces are clamped se-
curely in place.
Make tack welds to help hold pieces.
excessive heat:
2.
Weld a small portion and allow to cool
before proceeding.
Reduce wire feed speed.
Increase weld speed.
Cross
seCtIon