1 Introduction
Tungsten Inert Gas (TIG) shielded arc
welding, also known as Gas Tungsten Arc Welding (GTAW), was
originally developed by a key ESAB Company
for welding corrosion-resistant and other difficult-to-weld
metals. Over a period of years, however,
its application has expanded to include welding and surfacing
operations on practically all commercial
metals. The purpose of this booklet is to explain briefly the theory of
operation behind TIG welding, and to
describe the basic techniques employed in applying this process to a
variety of the more commonly welded
commercial metals.
