Welding Techniques; Torch Movement During Welding; Positioning Torch Tungsten For Various Weld Joints - Linde BOC Smootharc TIG200 DC Operating Manual

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BOC Smootharc TIG 200 DC Operating Manual
2.7

Welding techniques

TIG Welding techniques
Welding Rod
Shield gas
15–30°
Direction of travel
The suggested electrode and welding rod angles for welding a bead on
plate are shown above. The same angles are used when making a butt
weld. The torch is held 60–75° from the metal surface. This is the same
as holding the torch 15–30° from the vertical.
Take special note that the rod is in the shielding gas during the
welding process.
2.9

Positioning torch tungsten for various weld joints

Butt Weld and Stringer bead
90°
90°
20°
20°
'T' Joint
20°
20°
75°
15°
10°
15°
Vertical
Nozzle
90°
Tungsten electrode
70°
70°
90°
20°
20°
20-40°
75°
75°
15°
15°
2.8

Torch movement during welding

Tungsten Without Filler Rod
Welding
direction
90°
60–75°
Form pool
90°
90°
Tilt torch
75°
Move torch to front of pool. Repeat.
20°
20°
20°
75°
15°
15°
10°
10°
10°
10°
90°
90°
Corner Joint
70°
70°
90°
90°
90°
20°
20°
Lap Joint
20-40°
20-40°
20-40°
15°
10°
10°
75°
30°
30°
15°
30°
Tungsten With Filler Rod
Welding
direction
75°
75°
20°
75°
20°
75°
15°
75°
15°
75°
20°
75°
15°
15°
15°
Move torch to front of pool. Repeat.
20°
20°
75°
15°
15°
15°
15°
75°
75°
15°
75°
15°
75°
15°
15°
90°
75°
90°
70°
Form pool
70°
70°
75°
20°
70°
75°
20°
Tilt torch
20°
20°
75°
Add filler metal
75°
15°
10°
75°
Remove rod
10°
75°
70°
70°
90°
90°
75°
75°
75°
20-40°
20-40°
75°
75°
30°
30°
15°
15°
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