GMAW Advantages over SMAW
• Better arc time because of continuous wire electrode
▫ Sticks must be periodically changed in SMAW
• Better use of electrode filler metal than SMAW
▫ End of stick cannot be used in SMAW
• Higher deposition rates
• Eliminates problem of slag removal
• Can be readily automated
Flux-Cored Arc Welding (FCAW)
Adaptation of shielded metal arc welding, to overcome limitations of stick electrodes
• Electrode is a continuous consumable tubing (in coils) containing flux and other
ingredients (e.g., alloying elements) in its core
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• Two versions:
▫ Self-shielded FCAW - core includes compounds that produce shielding gases
▫ Gas-shielded FCAW - uses externally applied shielding gases