Sheet metal processing basically includes all sheet metal processing, including many processes, it is a collection of metal processing. With the development of society and the change of demand, the requirements of sheet metal processing technology and equipment are higher and higher. Once the error occurs, it is easy to cause bad treatment. Welding deformation is a common error in sheet metal processing. How to prevent this phenomenon? Let me tell you:

1. Select the correct welding sequence. For the welding structure with more components, the components should be welded separately and then welded as a whole. In this way, the deformation is less than that of the whole assembly and then welding. In addition, it can be installed and welded in some places, which is more convenient to operate.

2. Choose reasonable welding sequence. In order to prevent welding deformation, the welding sequence should be band welding, back welding and symmetrical welding.

3. Inverse shape method. Before and after welding, the weldment will produce deformation opposite to the deformation direction, and the deformation will be offset after welding and before welding.

4. Fixed method. This method is very effective to reduce welding deformation.

5. Choose reasonable welding method and specification. Different welding methods have different energy density and heat input. For thin plate welding, using high energy density welding methods, such as CO2 gas shielded welding, plasma arc instead of gas welding, manual arc welding, can reduce welding deformation. When welding aluminum and aluminum alloy structure, gas welding deformation is much larger than manual argon arc welding.