What Is Flux Cored Arc Welding?
Flux cored arc welding (FCAW) is an automated or semi-automated arc welding process utilizing a consumable, hollow electrode filled with flux. FCAW machines typically run on a constant voltage power supply although some examples utilize constant current supplies. There are two basic types of FCAW: one that uses an external shielding gas supply and one that relies on the flux content of the electrode to ensure surface protection. Flux cored arc welding is suitable for a wide range of metals and holds several advantages over shielded metal arc welding processes. These include high weld speeds, less pre-cleaning of workpieces, and a broad range of practical weld positions. Conventional manual or shielded metal arc welding (SMAW) processes utilize individual, flux covered electrodes to generate the arc. Flux cored arc welding makes use of a continuous, consumable electrode which is hollow in cross section and filled with flux. The electrode is wound on a drum or spool on the FCAW machine.
