OPERA
TING INSTR
UCTIONS
39
MIG 140 INVERTER WELDER 058-9305-6
Normal weld speed:
•
The bead will lay smoothly over the
work piece without ragged edges
(fig p).
•
The base metal puddle will be as deep as
the bead that rises above it.
•
The welding operation will make a
crackling sound.
Long arc:
•
The bead will be flat and wide
with
excessive spatter
(fig q)
.
•
The bead will undercut the work piece.
•
The slag will be difficult to remove from
the edges of the weld.
Guidelines for a good weld bead
•
A solid weld bead requires that the
electrode be moved slowly and steadily
along the weld seam.
•
Moving the electrode rapidly or
erratically will prevent proper fusion or
create an uneven bead.
MC-589305-45
fig p
MC-589305-46
fig q
WARNING!
Potential hazard that could result in serious injury or loss of life.
•
Do not perform any welding while standing, kneeling or lying on the
grounded area. Failure to comply could result in electric shock.
