Tig (Gtaw) Basic Welding Technique - Thermal Arc Fabricator 211i 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
Table 4-6: Current Ranges for Various Tungsten Electrode Sizes
Guide for Selecting Filler Wire Diameter
BASIC WELDING GUIDE
Work Piece
Can Be Any Commercial
Metal
Inert Gas
Shields Electrode
and Weld Puddle
Figure 4-38: TIG 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" (4.8mm)
Filler Wire Diameter DC Current Range (Amps)
1/16" (1.6mm)
3/32" (2.4mm)
1/8" (3.2mm)
3/16" (4.8mm)
Table 4-7: Filler Wire Selection Guide
4-22
Gas Cup
Either Ceramic,
High-lmpact or
Water Cooled
Metal
DC Current (Amps)
30-60
60-115
100-165
135-200
190-280
250-340
20-90
65-115
100-165
200-350
BASIC WELDING
Tungsten Electrode
Non-Consumable
Manual 0-5225