Welding with gas-shielded flux-cored wire, like FabCO® Excel-Arc™ 71, is a versatile option for welding material 1/4 inch or thicker. The wires are commonly used in general fabrication, structural applications, rail car manufacturing and shipbuilding. They can be welded in the flat and horizontal positions or out of position, such as vertical up.

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How to Weld with Gas-Shielded Flux-Cored Wires

The wires are commonly used in general fabrication, structural applications, rail car manufacturing and shipbuilding.

Gas-shielded flux-cored wires can be used in applications ranging from general fabrication and construction to shipbuilding and more. They require an external shielding gas, usually either 100% CO₂ or a 75 to 80% argon/CO₂ balance. The shielding gas being used can influence weldability, including welding spatter levels and arc stability. 

When welding, gaining the best results depends on operating within the correct parameters. Always consult the wire’s data sheet for details. These are available on most filler metal manufacturers’ websites. There, welding operators can find recommended polarity, voltage, amperage and wire-speed settings, along with shielding gas requirements, wire stick-out details and more. Following these recommendations not only reduces the risk of problems that require downtime for troubleshooting but also helps ensure the wires operate as they were intended.

Watch as Blaine Guy, Hobart applications engineer manager/CWI, demonstrates techniques for welding in each position with gas-shielded flux-cored wires.

For more guidance on welding various metals and what filler metals to use in your industry, explore our collection of Technical Articles.