How are flux cored electrodes similar to GMAW electrodes?

• A. They are continuous wire electrodes on a spool or larger container.
• B. They are solid rods used for manual welding.
• C. They require water cooling in all cases.
• D. They are used with TIG welding.

Answer: (C)

Both flux-cored and GMAW electrodes are continuous wire electrodes fed from a spool or similar container. This means they are designed to be fed automatically through the welding gun as the weld is made, rather than using a stick or rod you strike like in some other welding methods.

The key difference is the wire itself: flux-cored wire contains flux inside the hollow tube, which provides shielding and sometimes alloying elements, while solid GMAW wire is just metal. In use, GMAW typically relies on an external shielding gas, whereas FCAW can be self-shielded (flux provides the protection) or gas-shielded, depending on the type.

Cooling needs vary with the setup. Water cooling is not required in all cases; many machines use air cooling or selective water cooling only for high-amperage, long welds or specialized torches.

They are not used with TIG welding, which uses a non-consumable tungsten electrode and a separate filler metal as needed.