Submerged Arc Welding (SAW) is a highly efficient and automated welding process that involves the formation of an arc between a continuously fed electrode and the workpiece, which is submerged beneath a layer of granular flux.
The flux serves multiple purposes: it protects the molten weld pool from atmospheric contamination, provides thermal insulation, and contributes to the formation of a smooth, slag-free finish.
This method is particularly effective for joining thick sections of steel and other materials.