21-07-2012, 04:07 PM
Gas Tungsten Arc Welding
GTAW.ppt (Size: 431.5 KB / Downloads: 174)
Advantages
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
Disadvantages
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