1. The sickle bend of the steel strip is the main factor causing the misalignment of the steel pipe. In spiral pipe forming, the sickle bend of the steel strip will continuously change the forming angle, resulting in changes in the weld gap, leading to openings, misalignment and even misaligned edges.
2. Due to the poor shape and size accuracy of the head and tail of the uncut steel strip. It is easy to cause the steel strip to bend hard and produce wrong edges during docking.
3. When the super height of the steel strip butt weld is large, improper handling during the over-forming process can easily lead to large misalignment.
4. The uneven edge condition of the steel strip is another important reason for the wrong edge. Solution for misaligned edges of spiral welded steel pipes: Observe the bending condition of the steel strip coil after unwinding. The vertical roller bends the sheared part of the disc and continuously corrects the forming angle. This is a way to reduce the bending and misaligned edges of the steel strip during the production process. Effective Ways. When trimming, we pay attention to dimensional accuracy, pay attention to seam gaps, and when selecting strip materials, pay attention to whether the edges are neat.