It is impossible not to deform, but corresponding measures can be taken before welding to reduce the deformation of the channel steel to the lowest point. If you can record the average deformation of the channel steel, you can take anti-deformation measures in advance. Of course, this depends on the model of the channel steel. This series of measures can generally be operated based on experience. It is difficult to express clearly the inherent stress of structural steel structure deformation in a few words. This all depends on experience.

First of all, let’s briefly talk about some basic measures. The welding current should not be too high, and the welding speed should be kept as consistent as possible. The segmented cross welding method should be used. The deformation state of a workpiece caused by one person and multiple people welding at the same time. It is different. Try to weld one workpiece by one person (I don’t know the size of the workpiece you are welding), adopt the welding sequence of short first and then long, and if possible, use a steel platform to fix the workpiece (anti-deformation measures must be taken).

In addition, existing tooling should be used rationally, thermal nodes should be allocated according to local conditions, and the principle of thermal expansion and contraction of steel structures should be cleverly used to stack workpieces. The above are just some of the most basic preventive measures. Follow-up correction work generally needs to be carried out to solve more problems. Doing preventive work in advance can greatly reduce your labor intensity. See more, think more, explore more and accumulate experience. Generally, it is 5m long and 16 #Channel steel correction nodes can be compressed within 4 nodes (the channel sealing plate is 6mm fully welded).

If carbon dioxide gas is used to protect the welding workpiece, the deformation of the workpiece will be much smaller.