When welding parts made of stainless steel, copper, titanium, aluminum and various non-ferrous metals and alloys, conventional welding methods are not always suitable. Many experienced welders use argon welding for these applications. The process is demanding, time-consuming and specialized.
Argon welding of metal, or argon-arc welding, takes place in an inert argon atmosphere, which gives the process its name. Using argon to join two metals protects the weld pool from oxidation caused by contact with oxygen in the air. Because argon is significantly heavier than air — by 38% — it displaces air from the welding zone, fills the working space and reliably isolates the molten metal from the atmosphere.
The welding mode can be manual, semi-automatic or automatic. Modes are classified according to these methods and the type of electrode used in the process. There are two types of electrodes: consumable and non-consumable. The latter includes tungsten wire, which can ensure a strong and reliable joint between two metals, even dissimilar ones.








