Tweco 200DC Inverter Arc Welding Machine - Manual (Page 51)

WELDSKILL 200 AC/DC INVERTER
Manual 0-5207 4-15 BASIC WELDING GUIDE
Tungsten Electrode Types
Electrode Type
(Ground Finish)
Welding Application Features Colour Code
Thoriated 2%
DC welding of mild
steel, stainless steel
and copper
Excellent arc starting,
Long life, High current
carrying capacity
Red
Zirconated 1%
High quality AC weld-
ing of aluminium,
magnesium and their
alloys.
Self cleaning, Long
life, Maintains balled
end, High current car-
rying capacity.
White
Ceriated 2%
AC & DC welding of
mild steel, stainless
steel, copper, alumin-
ium, magnesium and
their alloys
Longer life, More
stable arc, Easier
starting, Wider current
range, Narrower more
concentrated arc.
Grey
Table 4-5 Tungsten Electrode Types
TIG Welding Filler Rods
Comweld
Rod
Aust Std AWS Std Part No.
1.6mm
Part No.
2.4mm
Part No.
3.2mm
Type/Application
LW1
LW1-6
Supersteel
R4
R6
R2
ER70S-4
ER70S-6
ER70S-2
321411
321417
321370
—
—
—
—
—
—
For mild-medium strength steels.
Pipes, tubing, roll cages, etc.
CrMo1
CrMo2
RB2
RB3
ER80S-B2
ER90S-B3
—
—
321379
321383
—
—
For welding of high strength Cr-Mo
steels used at elevated tempera-
tures.
308L
309L
316L
R308L
R309L
R316L
ER308L
ER309L
ER316L
321406
321403
321400
321407
321404
321401
—
—
—
For stainless steels. Stainless pipes,
tubing, architectural uses, etc.
Table 4-6 TIG Welding Filler Rods
Base Metal
Thickness
DC Current
for Mild
Steel
DC Current
for Stainless
Steel
Tungsten
Electrode
Diameter
Filler Rod
Diameter (if
required)
Argon Gas
Flow Rate
Litres/min
Joint Type
0.040”
1.0mm
35-45
40-50
20-30
25-35
0.040”
1.0mm
1/16”
1.6mm
5-7 Butt/Corner
Lap/Fillet
0.045”
1.2mm
45-55
50-60
30-45
35-50
0.040”
1.0mm
1/16”
1.6mm
5-7 Butt/Corner
Lap/Fillet
1/16”
1.6mm
60-70
70-90
40-60
50-70
1/16”
1.6mm
1/16”
1.6mm
7 Butt/Corner
Lap/Fillet
1/8”
3.2mm
80-100
90-115
65-85
90-110
1/16”
1.6mm
3/32”
2.4mm
7 Butt/Corner
Lap/Fillet
3/16”
4.8mm
115-135
140-165
100-125
125-150
3/32”
2.4mm
1/8”
3.2mm
10 Butt/Corner
Lap/Fillet
1/4”
6.4mm
160-175
170-200
135-160
160-180
1/8”
3.2mm
5/32”
4.0mm
10 Butt/Corner
Lap/Fillet
Table 4-7 Welding Rate