Flux-cored arc welding

Flux-cored arc welding (FCAW)

Flux-cored arc welding is a welding procedure of forming an electric arc between an automatically fed, hollow wire filled with flux and work piece. While the arc heat melts the parent metal, filler wire and flux, the flux may also add extensive material or elements and breaks down in the arc to form a gaseous shield that ejects atmostpheric gases from the weld zone. The welder can choose the supply of shielding gas may be introduced aeound the arc

Arc shield composed of vaporised and slag forming compounds protects metal transfer through arc

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The Flux-cored arc welding process needs a reliable and constant voltage power source (DC), wire feed unit, consumable flux-filled electrodes, an optional shielding gas supply, a welding gun, a work clamp and leads.

FCAW equipment is generally more robust than GMAW plant and requires some skills to set up properly. The process may be self shielding or gas shielded.

Typical uses for the FCAW process include:

• heavy fabrication
• general engineering.

FCAW has a better deposition rate and fusion than Gas metal arc welding

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