阴APP导航

Several advantages such as a high deposition rate and a high surface quality are given by the submerged-arc-welding-process. While the arc is burning in a weld cavity under a flux blanket and liquid slag, the process behavior and the droplet detachment is not quite clear. By using special experimental methods and different techniques based on high-speed technology and cavity pressure measurements, it is possible to observe the droplet detachment of the submerged-arc-welding-process and the surrounding cavity wall.

These observations can be used for the submerged-arc-welding of high-strength fine-grained structural steels, which are continuously gaining on importance. Because of their application in nowadays constructions, the reduced wall thicknesses and the outcome material and weight savings illustrate important advantages. A special problem by welding high-strength steels with the submerged-arc-welding-process is the hydrogen diffusion, which can cause cold cracks. The obtained knowledge of the cavity and droplet behavior is therefore of big importance. Due to the fact, that the methods serve individual advantages and disadvantages, the obtained physical conditions are compared to each other.