Tig (Gtaw) Basic Welding Technique - Thermal Arc 211i Fabricator Operating Manual

FABRICATOR 211i

4.05 TIG (GTAW) Basic Welding Technique

Gas Tungsten Arc Welding (GTAW) or TIG (Tungsten Inert Gas) as it is commonly referred to, is a welding process in
which fusion is produced by an electric arc that is established between a single tungsten (non-consumable) electrode
and the work piece. Shielding is obtained from a welding grade shielding gas or welding grade shielding gas mixture
which is generally Argon based. A filler metal may also be added manually in some circumstances depending on the
welding application.
A-09658_AB
Welds Made With or Without
Addition of Filler Metal
Tungsten Electrode Current Ranges
Guide for Selecting Filler Wire Diameter
BASIC WELDING
Work Piece
Can Be Any Commercial
Metal
Figure 4-40: TIG (GTAW) Welding Application Shot
Electrode Diameter
0.040" (1.0mm)
1/16" (1.6mm)
3/32" (2.4mm)
1/8" (3.2mm)
5/32" (4.0mm)
3/16" (5mm)
Table 4-6: Current Ranges for Various Tungsten Electrode Sizes
Filler Wire Diameter DC Current Range (Amps)
1/16" (1.6mm)
3/32" (2.4mm)
1/8" (3.2mm)
3/16" (5mm)
Table 4-7: Filler Wire Selection Guide
Gas Cup
Either Ceramic,
High-lmpact or
Water Cooled
Metal
Inert Gas
Shields Electrode
and Weld Puddle
DC Current (Amps)
30-60
60-115
100-165
135-200
190-280
250-340
20-90
65-115
100-165
200-350
4-18
BASIC WELDING
Tungsten Electrode
Non-Consumable
Manual 0-5157