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Which welding process employs a continuously fed electrode and uses both an external gas source and a granular flux to protect the weld pool?

  • A.Plasma Arc Welding
  • B.Electro gas Welding
  • C.Flux-Cored Arc Welding
  • D.Gas Metal Arc Welding

Answer: C

Flux-cored arc welding employs a continuously fed electrode and uses both an external gas source and a granular flux for protecting the weld pool in the key. The electrode is a tube filled with flux. Gas metal arc welding uses a continuously fed wire and an external gas, but no flux, plasma arc welding uses a tungsten electrode and a plasma gas, and electro gas welding is used for vertical joints with a separate gas shield.

The difference from gas metal arc welding is the flux core in the wire, which forms slag over the weld metal.

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