Gas Tungsten Arc Welding (GTAW or TIG)

1
Gas Tungsten Arc Welding (GTAW or TIG)
2
Effects of Polarity
Gas Tungsten Arc Welding
3
Advantages
Gas Tungsten Arc Welding

• Superior quality welds, generally free from
  spatter, porosity, or other defects
• Precise control of arc and fusion characteristics
• Weld almost all metals
• Used with or without filler wire
• Easily automated
• Used in all positions
• Intricate geometries weldable

4
Disadvantages
Gas Tungsten Arc Welding

• Less economical than consumable electrode
  processes for sections thicker than 3/8 inch
• Lowest deposition rate of all arc processes
• Tungsten inclusions
• Higher operator skill Required
• Sensitive to drafts