ESAB CIGWELD Transmig 255i, Руководство по эксплуатации, Страница: 64 / 96

OPERATING MANUAL
Transmig 255i Transmig 255i
TIG (GTAW) WELDING 6-8 Manual 0-5550
6.04 TIG (GTAW) Welding Problems
FAULT CAUSE REMEDY
1 Excessive bead build up or
poor penetration or poor
fusion at edges of weld.
Welding current is too
low Increase weld current and/or faulty joint
preparation.
2 Weld bead too wide and
flat or undercut at edges
of weld or excessive burn
through.
Welding current is too
high Decrease weld current.
3 Weld bead too small or
insufficient penetration or
ripples in bead are widely
spaced apart.
Travel speed too fast Reduce travel speed.
4 Weld bead too wide or
excessive bead build up or
excessive penetration in
butt joint.
Travel speed too slow Increase travel speed.
5 Uneven leg length in fillet
joint
Wrong placement of
filler rod Re-position filler rod.
6 Electrode melts or oxidises
when an arc is struck.
A Torch lead connected
to positive welding
terminal.
A Connect torch lead to negative welding
terminal.
B No gas flowing to
welding region.
B Check the gas lines for kinks or breaks
and gas cylinder contents.
C Torch is clogged with
dust or dirt.
C Clean torch.
D Gas hose is cut. D Replace gas hose.
E Gas passage contains
impurities.
E Disconnect gas hose from the rear of
Power Source then raise gas pressure
and blow out impurities.
F Gas regulator turned
off.
F Turn on.
G Torch valve is turned
off.
G Turn on.
H The electrode is too
small for the welding
current.
H Increase electrode diameter or reduce the
welding current.
I Power source is set for
MIG welding.
I Set Power Source to Lift TIG mode.