Gas tungsten arc welding (GTAW), known as tungsten inert gas (TIG) welding, is an arc welding process that uses a non consumable tungsten electrode to produce the weld.
The weld area is protected from atmospheric contamination by a shielding gas (usually an inert gas such as argon), and a filler metal such [...]
Learning how to tig weld is similar in a way to oxy-acetylene welding. The work area to be welded is first heated to the point where fusion between the two parts can occur and a filler rod is introduced to help in the process. While on thinner sheet metals a skilled tig [...]