SAW Applications and Products
• Steel fabrication of structural shapes (e.g., I-beams)
• Seams for large diameter pipes, tanks, and pressure vessels
• Welded components for heavy machinery
• Most steels (except hi C steel)
• Not good for nonferrous metals
Nonconsumable Electrode Processes
• Gas Tungsten Arc Welding
• Plasma Arc Welding
• Carbon Arc Welding
• Stud Welding
Gas Tungsten Arc Welding (GTAW)
Uses a nonconsumable tungsten electrode and an inert gas for arc shielding
• Melting point of tungsten = 3410C (6170F)
• A.k.a. Tungsten Inert Gas (TIG) welding
▫ In Europe, called "WIG welding"
• Used with or without a filler metal
▫ When filler metal used, it is added to weld pool from separate rod or wire
• Applications: aluminum and stainless steel most common