Flux-Core Arc Welding (FCAW)

Flux-Core Arc Welding (FCAW) is a welding process that utilizes a continuous, tubular wire electrode filled with flux. Unlike traditional welding methods that rely on external shielding gas, FCAW generates its shielding gas from the flux within the electrode when it melts. An electric arc is formed between the wire electrode and the workpiece, creating the high temperatures needed to melt the base metal and the consumable electrode. As the flux melts, it produces a protective gas shield and a slag layer that covers the weld zone, preventing exposure to the atmosphere and ensuring a clean weld. FCAW is known for its high deposition rates, making it suitable for welding thick materials and providing excellent productivity. It is commonly used in heavy-duty applications, such as shipbuilding, construction, and structural fabrication, as well as for outdoor and windy conditions where shielding gas from traditional methods might be less effective.