Spiral welding (original) (raw)

Spiral welding is a process where a continuous full penetration metal inert gas weld overlay is used to rebuild damage from wear, erosion, corrosion or cracking, or to increase the dimensions of a component to match an increased dimension on a mating part. Using the Spiral weld process eliminates the possible distortion of the component due to unbalanced stresses from normal welding processes. Spiral welding is a low energy input process, during which individual layers of weld and their associated heat affected zones are tempered and the grain structures refined by subsequent and overlapping temper beads.