Flux-Cored Arc Welding (FCAW) is a semi-automatic or automatic arc welding process that uses a continuously fed, consumable tubular electrode containing flux. It requires a constant-voltage or less commonly, a constant-current welding power supply. An externally supplied shielding gas is sometimes used, but often the flux itself generates necessary protection from the atmosphere.
Advantages
- Yields high-quality, consistent welds with fewer defects
- High deposition rate
- Can be used in all positions with the right filler metal
- Relatively easy to learn compared to other welding processes
- Allows for high welding productivity
Limitations
- A high level of noxious fumes that must be ventilated
- Higher electrode wire cost compared to solid electrode wires
- More costly equipment than many other welding processes
- Less portable equipment than SMAW or GTAW
- The slag covering the weld must be removed
Electrodes
| MATERIAL | TYPICAL ELECTRODE |
|---|---|
| CS/MS | E71T-1C |
| SS | E308LT1-1 |
| CS#SS | E309LT0-1 |
| CS#C276 (HASTELLOY) | ERNiCrMo-4 |
Equipment Cost: Relatively Costly
Welding Speed: More than SMAW
