What is submerged arc welding? What are its characteristics and scope of application?

Submerged arc welding is a common arc welding process. The first patent of submerged arc welding (SAW) technology was obtained in 1935, which covered the arc with a layer of granular flux. This process requires a consumable solid or tubular (metal core) electrode with a continuous power supply. The molten weld and arc zone are protected from atmospheric pollution by being "submerged" under a granular molten flux coating composed of lime, silica, manganese oxide and calcium fluoride. Calcium fluoride and other compounds. When melted, the flux becomes conductive and provides a current path between the covered electrode and the workpiece. This thick flux completely covers the molten metal, thus preventing splashing and sparks, and suppressing strong ultraviolet radiation and smoke, which is part of the metal shielded arc welding (SMAW) process.

Its applications are: steel pipe welding, such as automatic submerged arc welding machine for steel pipe;

Automatic submerged arc welding machine for longitudinal welded steel pipes is mainly used to produce longitudinal welded steel pipes. The welding machine can effectively solve the internal and external welding forming of straight seam welded steel pipes, adopt efficient submerged arc welding technology and cooperate with automatic seam tracking system to provide reliable guarantee for welding quality, and can meet various weld detection requirements of steel pipe production. It is widely used in the production of straight welded pipes in power industry and other industries.

According to the taper of the power tower, the driving roller frame adjusts the driving roller spacing through the screw to make the straight weld in a horizontal position.