Welding – is one of the leading technological processes of metal. The big advantages of welding ensured its widespread use in the economy. With welding being carried out ships, turbines, boilers, planes, bridges, reactors and other necessary structures. The ability of metal welded open man even during the initial development of this material. Nuggets metal man is regarded as original stones that do not break up upon impact, and crushed.
Therefore, the first method of metal was cold forging. The greatest volume among other types of welding is manual arc welding – Fusion welding mma welding electrodes, at which the feed electrode and moving the arc along the welded edges manually. The main working tool for manual welder welding electrode is that intended for clamping the welding electrode and wire welding current. Applied electrode spring, plate and screw types. For automatic submerged arc welding using bare welding wire and flux for the protection of the arc and weld pool from the air.
Feeding and movement of the electrode wire and the ignition process of arc welding and crater at the end of the suture is automated. In the process of automatic submerged-arc welding arc burns between the welding wire and base metal. Submerged arc welding operates welding machines, welding heads or self-propelled tractors, moving directly from product. Appointment of welding machines – welding wire feeding into the arc and continuous welding mode during the entire process.