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Flux-cored arc welding (FCAW) uses the heat generated by a DC electric arc to fuse the metal in the joint area.
The arc is struck between a continuously fed consumable filler wire and the workpiece, melting both the filler wire and the workpiece in the immediate vicinity.
The entire arc area is covered by a shielding gas, which protects the molten weld pool from the atmosphere.
FCAW is a highly productive process for a range of plain carbon, alloy, stainless and duplex steels. It can also be used for surfacing and hardfacing.
FCAW is a variant of the MIG/MAG process and while there are many common features between the two processes, there are also several fundamental differences. It offers more flexibility with alloy compositions than MIG, for instance. It also typically enables higher wire deposition rates and greater arc stability although the process efficiency of MIG is usually superior.
There are two FCAW operating modes:
Gas-shielded operation where a shielding gas is supplied from an external source, such as a gas cylinder
Self-shielding operation where gas is produced when fluxing agents decompose within the wire
Boosting your productivity
We deliver a range of tried-and-tested FCAW gases under our MISON family of shielding gases. Our application experts can also advise you on the mixture and operating mode best suited to your needs, also supporting you with the equipment and gas management services you need.