Which welding process typically uses a non-consumable electrode?

Tungsten Inert Gas (TIG) Welding is characterized by the use of a non-consumable tungsten electrode, which produces the arc necessary to melt the base material and the filler metal, if used. This process allows for precise control of the heat and is particularly effective for welding thin materials and achieving high-quality welds. The non-consumable nature of the tungsten electrode ensures that it does not melt away during the welding process, which allows it to maintain its shape and improves precision and control over the weld puddle.

In contrast, other welding processes such as Flux-cored Arc Welding, MIG Welding, and Oxy-fuel Welding either utilize consumable electrodes or are based on different principles that do not focus on a non-consumable electrode for creating the weld. This distinction highlights why TIG welding is favored for applications requiring high quality and precision.