Article details
[Phenomenon] For components with cross welds, if we do not pay attention to rationally arrange the welding sequence by analyzing the welding stress release and the influence of welding stress on component deformation, but weld vertically and horizontally randomly, the result will cause longitudinal and horizontal joints to restrain each other, resulting in large The temperature shrinkage stress will deform the plate, the surface of the plate will be uneven, and it may cause cracks in the weld.
[Measures] For components with cross welds, a reasonable welding sequence should be established. When there are several kinds of vertical and horizontal cross welds to be welded, the transverse seams with large shrinkage deformation should be welded first, and then the longitudinal welds should be welded, so that the transverse welds will not be constrained by the longitudinal welds when welding the transverse welds, so that the shrinkage stress of the transverse seams Relieved without restraint to reduce welding distortion, maintain weld quality, or weld butt welds first and then fillet welds.
