Stress after stretching of aluminum plate

Improper elimination of residual stress after stretching of aluminum plates is usually due to uneven clamping of each jaw, excessive local waves of the aluminum plate before stretching, and limited stretching amount is not enough to eliminate the residual stress in this area.

The stretching speed is not stable, resulting in new uneven stress distribution.

The sawing process undercuts the ends and sides of the stretched sheet.

Therefore, maintaining a good hot-rolled aluminum plate shape, a standardized stretching process, and correctly selecting the sawing size are important conditions for achieving good stretching results.