Welding process parameters affect the weld shape of submerged arc welding
Submerged arc welding (SAW) is mainly suitable for welding at the flat welding position. If certain tooling aids are used, welding at fillet welding and horizontal welding positions can be realized. The main factor that affects the shape and performance of the submerged arc welding seam is the welding process parameters. The welding parameters of submerged arc welding mainly include: welding current, arc voltage, welding speed, welding wire diameter and extension length. 1. Welding current Under general welding conditions, the weld penetration is directly proportional to the welding current. With the increase of welding current, the penetration depth and weld reinforcement increase significantly, while the width of the weld does not change much. At the same time, the melting amount of the welding wire also increases correspondingly, which increases the residual height of the weld. As the welding current decreases, the penetration and the surplus height decrease. 2. Arc...