Submerged arc welding
From GAWDAwiki
Submerged arc welding (SAW) is an arc welding process in which fusion is produced by heating with an electric arc or arcs between a bare metal electrode or electrodes and the work. Pressure is not used. Filler metal is obtained from the electrode, and sometimes from a supplementary welding rod.[1] Shielding is supplied by a granular, fusible material usually brought to the work from a flux hopper.[2]
Wire
SAW is usually conducted with a single wire with AC or DC. Variants include:
- Twin wire
- Multiple wire (tandem or triple)
- Single wire with hot or cold wire addition
- Metal powder addition
- Tubular wire
Flux
The primary types of flux for SAW are:
- Bonded fluxes
- Fused fluxes[3]
