1. Fixture fixing method
Clamp the combined weldment with a very rigid clamp, control the deformation with a force, and then weld it. This method is clamp fixation method.
2. Reverse deformation method
The weldment is bent or inclined in the opposite direction in advance, and then it just returns to the predetermined shape and position due to its shrinkage and deformation after welding. The purpose of preventing welding deformation and reducing welding stress can be achieved.
3. Adopt positioning control method
Before welding, many welding spots are used to locate the welding position or around the component, and heavy objects can be pressed on both sides of the weld. This method is called positioning control method.
4. Welding sequence method
The rule of welding deformation is that the deformation caused by the first weld is the largest, and the deformation caused by each weld generally cannot offset each other. The last deformation direction is consistent with the deformation direction caused by the first weld.
