Conventional welding methods are not always suitable for joining stainless steel, copper, titanium, aluminum and various non-ferrous metals and alloys. Experienced welders often use TIG welding for these applications. This process is demanding, time-consuming and specialized.
TIG welding, also known as gas tungsten arc welding, takes place in an inert argon atmosphere. When two metals are joined, argon protects the weld from oxidation caused by contact with oxygen in the air. Because argon is 38% heavier than air, it displaces air from the welding zone, fills the working area and reliably isolates the molten metal from the atmosphere.
The welding process can be performed manually, semi-automatically or automatically. Welding modes are classified according to the method used and the type of electrode involved. There are two types of electrodes: consumable and non-consumable. The latter includes a tungsten electrode, which can provide a strong and reliable joint between two metals, including dissimilar metals.








