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Welder Red Seal · Question

In FCAW, what is the purpose of the flux contained within the tubular electrode?

The flux inside FCAW electrodes performs similar functions to SMAW electrode coatings: it generates shielding gases, contains deoxidizers and scavengers to clea

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Question: In FCAW, what is the purpose of the flux contained within the tubular electrode?

Answer options: ✅ To provide shielding gas, deoxidizers, and slag formers, similar to SMAW flux

  • To increase the conductivity of the electrode for higher current
  • To chill the weld pool to prevent distortion
  • To act as a lubricant for better wire feeding

Correct answer: To provide shielding gas, deoxidizers, and slag formers, similar to SMAW flux

Explanation: The flux inside FCAW electrodes performs similar functions to SMAW electrode coatings: it generates shielding gases, contains deoxidizers and scavengers to clean the weld metal, and forms a protective slag over the weld.

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