Deformation is inevitable, just a matter of size. The deformation control method of large-area riveted welding parts: 1, reverse deformation method, that is, back-to-back synchronous welding; 2. Welding edge preheating method to realize high-temperature preheating and reduce deformation; 3. Control the molding gap. The smaller the gap, the better. If there is no best gap, the molding can be completed or the deformation resistance can be reserved. 4. If it is a weld bead where two plates are attached, pay attention to plug the weld hole; 5. In the welding process, each side of the workpiece is pressed to reduce deformation; 6. Adopt subsection welding and symmetrical welding to control deformation; 7. The welding method to prevent excessive penetration and reduce the heat increase caused by welding, thus reducing deformation; 8, temperature control method, if conditions permit, add water to the non-welded parts for cooling control, and also control the temperature of the whole riveting part to reduce deformation; 9, layered welding, control deformation; 10, quickly hammer the newly welded weld bead to extend the weld bead, control the weld bead shrinkage and reduce the welding deformation; 1 1, thin workpieces with high accuracy requirements, adopt low current welding method; 12, welding forming, distributed deformation control. I am Taishan Jin Gangzuan, and I have studied mechanical manufacturing for many years. What is fate? Be careful today, forget to have reference value!