Tig Welding Tig Welding is easily performed on a variety of metals. It generally requires little or no post weld finishing. Filler metal may be added, if necessary. An inert shielding gas supplies shielding for the arc. It generally calls for little post weld cleanup.
Shielding is obtained from an externally supplied gas or gas mixture.
Spray Transfer - Metal is transferred across the arc creating a continuous spray of fine droplets of metal. These droplets are projected down to the base metal. For thicker sections, argon-helium mixtures or pure helium may be used. Pure helium may also be employed for deeper penetration. GMAW - Argon is used for most applications.