Hobart STICKMATE LX Owner's Manual page 40

Excessive Penetration
Possible Causes
Excessive heat input.
Possible Causes
Excessive heat input.
Possible Causes
Unsteady hand.
Possible Causes
Excessive heat input.
OM-316 Page 36
Table 6-5. Excessive Penetration
Good Penetration
Select lower amperage. Use smaller electrode.
Increase and/or maintain steady travel speed.
Table 6-6. Burn-Through
Select lower amperage. Use smaller electrode with lower amperage.
Increase and/or maintain steady travel speed.
Table 6-7. Waviness Of Bead
Use two hands. Practice technique.
Table 6-8. Distortion
Base metal moves
in the direction of
Use restraint (clamp) to hold base metal in position.
Make tack welds along joint before starting welding operation.
Select lower amperage for electrode.
Increase travel speed.
Weld in small segments and allow cooling between welds.
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Excessive Penetration − weld metal melt-
ing through base metal and hanging un-
derneath weld.
Corrective Actions
Burn-Through − weld metal melting com-
pletely through base metal resulting in
holes where no metal remains.
Corrective Actions
Waviness Of Bead − weld metal that is not
parallel and does not cover joint formed by
base metal.
Corrective Actions
Distortion − contraction of weld metal dur-
ing welding that forces base metal to
move.
the weld bead.
Corrective Actions