Flux-cored arc welding (FCAW) is a common arc welding process. FCAW requires a continuously fed consumable tubular electrode containing a flux and a constant voltage or, less commonly, a constant current welding power supply. The use of an externally supplied shielding gas is optional creating the primary process variation:
- FCAW–S (self-shielded or “open-arc”)
- FCAW–G (gas-shielded)
FCAW key process variables
- Wire feed speed (and current)
- Arc voltage
- Electrode extension
- Travel speed
- Electrode angles
- Electrode wire type
- Shielding gas composition (if required)
FCAW applications
- FCAW may be an “all-position” process with the right filler metals
- A high-deposition rate process in the 1G/1F/2F
- Some “high-speed” (e.g., automotive applications)
Used on the following alloys:
- Mild and low alloy steels
- Stainless steels
- Some high nickel alloys
- Some wearfacing/surfacing alloys
References and further reading
American Welding Society, Welding Handbook, Vol 2 (9th ed.)
See also