Submerged Arc Welding

Submerged arc welding

In submerged arc welding, a bare wire electrode is used. It is fed automatically from a spool and generates an electric arc to                            

heat the metal. The flux in powder form is fed from a hopper to completely cover the joint and the tip of the electrode. The arc

creates the heat to melt the joint, flux and electrode. A slag is formed to provide a protective coating for the weld.

The excess flux powder can be collected and used again. Submerged arc welding is a fully automated process.

Applications: used for large scale straight line welds such as steel reinforcing beams, shipbuilding and bridge construction.