The gas is going to depend on what style of welding you are doing. For TIG (tungsten inert gas) it is 100% argon. For heliarc, which is a form of TIG, it is 100% helium. For MIG (metal inert gas) it is 75% argon/ 25% carbon dioxide. Finally, for gas welding, it acetylene and oxygen--separate tanks.
(my son helped on this one)
oxygen and acetylene gas Argon gas is used in MIG and TIG welding
What type of welding can we use LPG ?
Some methods are used: - electron beam welding - laser beam welding - gas wolfram arc welding - gas metal arc welding - resistence welding - brazing
farting gas:)
why oxyacetylene filler rods cannot be used for gas tungusten ar welding
TIG welding uses Argon.
If by gas welding you mean-oxyacetylene welding. The difference is just that arc welding requires a darker shade of lens. When oxyfuel gas welding (OFW) usually a shade 5 lens is recommended. When arc welding, a minimum of shade 10 lens should be used (actually shade should be determined by amount of current used).
API 1104 & asme B31
what are gas welding limitation
Gas welding & Friction welding. Souvik Kumar Dey
When MIG welding STEEL a mixture of Argon -- CO2 is used. 75% - 25%
As an inert gas, it shields the weld from oxygen and corrosion during the melting process. Tig welding means "through inert gas".