Low voltage paralleling switchgear air insulated switchgear outdoor type switchgear

Product knowledge

From the connection method

welded

The deformation phenomenon of the workpiece after welding is caused by the stress caused by the expansion of the heated molecules at the welding site, the microscopic displacement generated by extrusion, and the failure to reset after cooling. In order to overcome the deformation effect, the shaping process must be considered. Plastic surgery methods are generally: ① The deformation range of the workpiece is predicted through the test, and the workpiece is forced to deform in the opposite direction before welding, so as to reach the predetermined size after welding; ② After welding, use the positive method to correct; ③ The relative shrinkage part after hitting and pressing welding, and the stress balance is obtained; ④ the relatively loose convex part after heating welding to achieve the same shrinkage as the welding; ⑤ If necessary, the integral heat treatment of the components. In addition, the selection of welding points, weld direction, welding order, spot welding positioning have a certain impact on the deformation phenomenon after welding, such as properly handled can reduce the deformation, but this depends on the specific situation.

Low voltage paralleling switchgear air insulated switchgear outdoor type switchgear