9 points to prevent welding deformation

Update:20 Mar 2020

1. Reduce the cross-sectional area of the weld and, on […]

1. Reduce the cross-sectional area of the weld and, on the premise of obtaining a complete weld with no defects beyond the standard, use a smaller bevel size (angle and clearance) as much as possible.
2. Welding method with small heat input. Such as: CO2 gas shielded welding.
3. For thick plate welding, multi-layer welding is used instead of single-layer welding.
4. In the case of meeting the design requirements, the welding of longitudinal stiffeners and transverse stiffeners can be interrupted.
5. When both sides can be welded, double-sided symmetrical grooves should be used, and in multilayer welding, the welding sequence is symmetrical to the axis of the component and the axis.
6. When the thickness of the T-shaped joint is large, the beveled butt weld is adopted.
7. Adopt the anti-deformation method before welding to control the angular deformation after welding.
8. Use rigid fixture fixation method to control the deformation after welding.
9. Adopt the reserved length method of the component to compensate the longitudinal shrinkage of the weld. Such as: H-shaped longitudinal weld seam can be reserved 0.5 ~ 0.7 mm per meter.