Flux-cored arc welding (FCAW) is a type of welding that uses a continuously fed wire electrode that is coated with flux. This flux creates a shielding gas while the welding is taking place, which helps to protect the weld area from contamination.
FCAW is generally used for thicker materials that are difficult to weld with other methods. FCAW is a popular choice for welders because it is relatively easy to learn and produces high-quality results.