Reasons for wrinkles on aluminum plates

Inclusions and stratification may be caused by

Ingots contain non-metallic impurities,

The ingot contains too much gas and is severely loose.

The reason for the wrinkles on the aluminum plate may be

The roller type is incorrect, and the aluminum plate is uneven and deformed.

The wave of the plate before calendering is too large,

The feeding is incorrect during calendering, resulting in wrinkles,

The thickness difference between the two sides of the aluminum plate is too large, which is easy to produce wrinkles.