Submerged Arc Welding

Submerged powder welding is an automatic arc welding technique. It is a melting bare wire electrode fed by a coil. Instead of shielding gases around the arch, a flow of powder covers the arch and forms a shielding blanket. The flux is supplied continuously together with the wire. It encloses the arc and prevents welding splashes and spark formation. Thus, submerged welding can be observed without a welding helmet. Protective goggles and gloves are still recommended. As an automatic technique with higher usability, it is well suited for high production industries. It is commonly used for bulk welding of pipes and plates with thickness of the order of 1 inch.