Final answer:
TIG welding, also known as Tungsten Inert Gas welding, was the first gas-shielded process that used a tungsten electrode and helium shielding gas. It is commonly used to weld non-ferrous metals like aluminum and stainless steel.
Step-by-step explanation:
The first gas-shielded process that employed a tungsten electrode and helium shielding gas is known as TIG welding, which stands for Tungsten Inert Gas welding. In this process, the tungsten electrode is used to generate the electric arc, while the helium gas acts as the shielding gas to protect the weld from atmospheric contamination. TIG welding is commonly used for welding non-ferrous metals like aluminum, stainless steel, and copper alloys.
Learn more about TIG welding