Gases which avert atmospheric pollution of the weld puddle and some of the inert gases include argon and helium. The main purpose is to shield the weld area from atmospheric gases, such as oxygen, nitrogen, and water vapor.
The atmospheric gases can cut the quality of the weld or make the welding process more difficult and it depends upon the materials being welded. The option of shielding gas made an assortment of dissimilarity to the simplicity of welding. Conjointly it has an impact on numerous other phases of the process, and it takes into consideration the welding torch travel speed and the superiority of the weld deposit in completed form.
The application of shielding gas plays a major role in welding, on the other hand the ability to cut and heat depends heavily on acetylene, for welding a wide range of gases are used as shielding gas.
This gas averts other gases in the environment from dropping the excellence of the welding process.