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Model WT6100
Pre-TIG Welding tips:
TIG welding is much harder to master
than other welding processes.
Experience welding with an Oxy-
Acetylene (flame power) torch will help
greatly with learning TIG welding.
CLEAN the area to be welded.
Cleanliness is imperative. You can't get
the base metal too clean. There is no
flux to float off impurities with the TIG
process.
Cut filler metal rods to shorter lengths
for easier control. Usually TIG filler
metal comes in 36" lengths. It is much
easier to handle if it is 18" or 12". Clean
the filler metal with alcohol and a clean
white cloth. Dirt and dust contaminate
a weld.
TIG welding gives off less light than
other arc welding processes, but you
must still use a #10 minimum shade
welding lens to protect your eyes.
Get yourself into a comfortable
position to weld. Seated with your arms
supported by a welding table or by the
work-piece.
TIG Electrode Identification
Identifcation
Oxide
Color
Green
None
Blue
0.4% ThO
Yellow
1.0% ThO
Red
2.0% ThO
Violet
3.0% ThO
Orange
4.0% ThO
Brown
0.3% ZrO
White
0.8% ZrO
Black
1.0% LaO
Grey
2.0% CeO
Striking an arc:
Turn on the welder and the gas valves
on the gas bottle, regulator, and torch.
Rest the torch nozzle on the base
metal to be welded without the
Tungsten electrode touching the base
metal.
Rotate the torch so that the Tungsten
electrode lightly touches the base
metal and immediately lift off or rotate
off as the arc ignites.
Keep the Tungsten 1/8" - 3/16" from
the work piece while maintaining the
arc.
As the metal gets hot, it becomes a
shiny orange molten puddle. Dip the
filler metal rod in the puddle to add
filler metal.
Recommended TIG Parameters for Optional Electrodes
Electrode
Diameter
(in)
(mm)
2
2
0.02
0.5
2
0.04
1.0
2
1/16
1.6
5/64
2.0
2
3/32
2.4
2
1/8
3.2
2
5/32
4.0
2
3/16
5.0
2
1/4
6.3
Tips while TIG welding:
Always let the filler metal rod be
melted by the molten puddle. NOT
by the torch.
Never touch the hot Tungsten
electrode to the molten puddle. The
molten steel will be wicked up by the
Tungsten, contaminating the electrode.
When you contaminate the Tungsten
with steel, stop welding and re-grind
the point of the electrode, removing
the steel contamination.
When you burn a hole through the
base metal, stop welding and let the
weld cool before re-starting the arc.
Before making an important TIG weld,
practice on a test piece. TIG welding is
an art, and practice improves quality.
There is a lot of self-satisfaction to
mastering this welding process and
seeing that perfect weld.
Direct Current (amps)
Electrode Negative
Electrode Positive
Polarity
Tungsten
Pure
with
Pure
Tungsten
Oxides
Tungsten
2-20
2-20
10-75
10-75
40-130
60-150
10-20
75-180
100-200
15-25
130-230
170-250
17-30
160-310
225-330
20-35
275-450
350-480
35-50
400-625
500-675
50-70
550-875
650-950
65-100
5
Alternating Current
(amps)
Polarity
Tungsten
with
Pure
Oxides Tungsten
N/A
N/A
2-15
N/A
N/A
15-55
10-20
45-90
15-25
65-125
17-30
80-140
20-35
150-190
35-50
180-260
50-70
240-350
65-100
300-450
www.chpower.com
Tungsten
with
Oxides
2-15
15-70
60-125
85-160
120-210
150-250
240-350
330-460
430-575
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