Tig (Gtaw) Welding Problems - ESAB fabricator 141i Operating Manual

ESAB FABRICATOR 141i
Base Metal DC Current
Thickness for Mild
Steel
0.040" 35-45
1.0mm 40-50
0.045" 45-55
1.2mm 50-60
1/16" 60-70
1.6mm 70-90
1/8" 80-100
3.2mm 90-115
3/16" 115-135
4.8mm 140-165
1/4" 160-175
6.4mm 170-200
TIG Welding is generally regarded as a specialized process that requires operator competency. While many of the principles out-
lined in the previous Arc Welding section are applicable a comprehensive outline of the TIG Welding process is outside the scope of
this Operating Manual. For further information please refer to www.victortechnologies.com or contact ESAB.

4.07 TIG (GTAW) Welding Problems

FAULT
1 Excessive bead build up or
poor penetration or poor
fusion at edges of weld.
2 Weld bead too wide and
flat or undercut at edges
of weld or excessive burn
through.
3 Weld bead too small or
insufficient penetration or
ripples in bead are widely
spaced apart.
4 Weld bead too wide or
excessive bead build up or
excessive penetration in
butt joint.
5 Uneven leg length in fillet
joint
BASIC WELDING GUIDE
DC Current Tungsten
for Stainless Electrode
Steel Diameter
20-30 0.040"
25-35 1.0mm
30-45 0.040"
35-50 1.0mm
40-60 1/16"
50-70 1.6mm
65-85 1/16"
90-110 1.6mm
100-125 3/32"
125-150 2.4mm
135-160 1/8"
160-180 3.2mm
Table 4-9
CAUSE
Welding current is too
low
Welding current is too
high
Travel speed too fast
Travel speed too slow
Wrong placement of
filler rod
4-20
Filler Rod Argon Gas
Diameter (if Flow Rate
required) CFH
1/16" 10-15
1.6mm
1/16" 10-15
1.6mm
1/16" 15
1.6mm
3/32" 15
2.4mm
1/8" 20
3.2mm
5/32" 20
4.0mm
REMEDY
Increase weld current and/or faulty joint
preparation.
Decrease weld current.
Reduce travel speed.
Increase travel speed.
Re-position filler rod.
Joint Type
Butt/Corner
Lap/Fillet
Butt/Corner
Lap/Fillet
Butt/Corner
Lap/Fillet
Butt/Corner
Lap/Fillet
Butt/Corner
Lap/Fillet
Butt/Corner
Lap/Fillet
Manual 0-5420