398
S. Papaefthymiou
Fig. 12.9 Indicative microstructure of weld seam after HFIW
12.3.2 Submerged Arc Welding (SAW)
During SAW, electric power is applied to an electrode via the nozzle creating an arc.
A specially designed funnel supplies flux that is used to shield the molten metal and
assist arc striking and stability. The arc melts both the flux and the metal forming a
liquid slag that later solidifies and fuses to the base metal, as shown in Fig. 12.10.
Fig. 12.10 Schematic of the SAW lay out
S. Papaefthymiou
Fig. 12.9 Indicative microstructure of weld seam after HFIW
12.3.2 Submerged Arc Welding (SAW)
During SAW, electric power is applied to an electrode via the nozzle creating an arc.
A specially designed funnel supplies flux that is used to shield the molten metal and
assist arc striking and stability. The arc melts both the flux and the metal forming a
liquid slag that later solidifies and fuses to the base metal, as shown in Fig. 12.10.
Fig. 12.10 Schematic of the SAW lay out