TIG welding, or Tungsten Inert Gas welding, is a welding process that uses a tungsten electrode. Unlike other processes, the tungsten electrode is not consumed during the process. An inert gas, which is usually argon, is used to protect the weld area from contamination. This gas forms a protective atmosphere around the weld, preventing oxidation and other undesirable reactions.
This process is renowned for its precision and the high quality of the welds it produces. It is particularly suitable for thin materials and those requiring clean and aesthetic welds, such as aluminum, stainless steel, and copper alloys. Welders can precisely control the heat and speed of welding, allowing for very fine and detailed welds.
This process is commonly used in the aerospace, automotive, and medical equipment manufacturing industries, where high standards of weld quality and performance are required. TIG welding requires special training and expertise as it demands great precision and good coordination from the welder.