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Weldskill 200 ac/dc inverter – Tweco 200DC Inverter Arc Welding Machine User Manual

Page 51

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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

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