Tig (Gtaw) Basic Welding Technique - CIGWELD WELDSKILL 200HF Operating Manual

200HF

5.03 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.
Art # A-09658_AC
Welds Made With or Without
Addition of Filler Metal
Tungsten Electrode Current Ranges
Table 5-1: Current Ranges for Various Tungsten Electrode Sizes
Guide for Selecting Filler Wire Diameter
The operator should use the welding current range values as a guide only, then finally adjust the
current setting to suit the application.
SERVICE
OPERATING MANUAL
Work Piece
Can Be Any Commercial
Metal
Inert Gas
Shields Electrode
and Weld Puddle
Figure 5-4: 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 5-2: Filler Wire Selection Guide
NOTE
5-6
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
Tungsten Electrode
Non-Consumable
Manual 0-5406