1. The design should reasonably reduce the number of welds, reduce the size of welds, select a reasonable groove and arrange the weld position.

2. Process measures: reverse deformation, rigid fixation method, reasonable welding methods and process parameters, reasonable assembly and welding sequence.

3. Post welding heat treatment, vibration aging treatment and natural aging treatment.

4. When welding, welders beat the weld to maintain the interlayer temperature, etc.This depends on the structure and material of the workpiece.