{"id":264,"date":"2022-04-06T03:13:00","date_gmt":"2022-04-06T03:13:00","guid":{"rendered":"https:\/\/mewelding.com\/?p=264"},"modified":"2024-03-18T12:00:32","modified_gmt":"2024-03-18T12:00:32","slug":"tig-welding","status":"publish","type":"post","link":"https:\/\/mewelding.com\/tig-welding\/","title":{"rendered":"TIG Welding (GTAW)"},"content":{"rendered":"\n
This article talks about the basics of tig welding, starting from what is tig welding, the principles of tig welding process, shielding gas used in tig welding, and advantages of tig welding.<\/p>\n\n\n\n
TIG welding is also called Gas Tungsten Arc Welding. It is a welding process in which joining of metals is achieved by heating the metal with an arc. The arc is struck between a tungsten electrode and the work-piece. The tungsten electrode is non-consumable. <\/p>\n\n\n\n
Shielding is obtained by using an inert gas, often argon. The filler metal is added separately, often fed into the molten metal using hand.<\/p>\n\n\n\n
The process derives its name from three main characteristics of the process \u2013 gas<\/strong> shielding, tungsten<\/strong> electrode, and an electric arc<\/strong>. Hence the name gas tungsten arc<\/strong> welding.<\/p>\n\n\n\n The tungsten electrode can be pure tungsten or an alloy. Small quantities of lanthanum and cesium are added to make it suitable for the purpose.<\/p>\n\n\n\n The shielding gas is provided to shield the arc from atmospheric gases, and it is fed through the electrode holder.<\/p>\n\n\n\n Sometimes filler metal is not added. It is then called an autogenous weld.<\/p>\n\n\n\n What distinguishes TIG welding from other arc welding processes is that the arc is struck by a non-consumable electrode. The TIG welding torch is thus suitably designed to house the tungsten electrode. The torch also provides a passage for supply of inert gas.<\/p>\n\n\n\n TIG welding is most commonly used to weld stainless steel <\/a>and non-ferrous metals such as aluminum, magnesium<\/a>, and copper alloys; especially when thin sections are involved. TIG welding enables much greater control over the weld. More control than processes such as SMAW and GMAW paves the way for stronger, higher quality welds.<\/p>\n\n\n\n