Controlling Weld Distortion in Large Sheet Metal Structures

Fixturing strategies, weld sequencing and stress relief methods that keep large frames within tolerance.

Large welded structures such as equipment frames are prone to distortion. Managing it requires planning before the arc is even struck.

Rigid fixtures with strategic clamp points restrain movement during welding. For symmetric parts, back-to-back welding cancels out distortion forces.

Balanced, skip welding sequences distribute heat evenly. We alternate weld locations and directions to prevent cumulative bowing.

Laser scanning after welding confirms flatness and alignment, allowing corrective measures before surface treatment.