ESAB CIGWELD Transmig 255i, Руководство по эксплуатации, Страница: 65 / 96

OPERATING MANUAL
Transmig 220i
Transmig 255i Transmig 255i
Manual 0-5550 6-9 TIG (GTAW) WELDING
7 Dirty weld pool A Electrode contaminated
by contact with work
piece or filler rod
material.
A Clean the electrode by grinding off the
contaminates.
B Work piece surface has
foreign material on it.
B Clean surface.
C Gas contaminated with
air.
C Check gas lines for cuts and loose fitting
or change gas cylinder.
8 Poor weld finish Inadequate shielding
gas. Increase gas flow or check gas line for
gas flow problems.
9 Arc start is not smooth. A Tungsten electrode
is too large for the
welding current.
A Select the right size electrode. Refer to
Table 6-1 Cigweld Electrode Selection
Chart.
B The wrong electrode
is being used for the
welding job.
B Select the right electrode type. Refer to
Table 6-3 Cigweld Electrode Selection
Chart.
C Gas flow rate is too
high.
C Select the right rate for the welding job.
Refer to Table 6-5.
D Incorrect shielding gas
is being used.
D Select the right shielding gas.
E Poor work clamp
connection to work
piece.
E Improve connection to work piece.
10 Arc flutters during TIG
welding.
Tungsten electrode
is too large for the
welding current. Select the right size electrode. Refer to
Table 6-1 Tungsten Electrode Current
Ranges.
Table 6-6: GTAW (TIG) Welding Problems