Surface burrs and pine tree like patterns on hot-rolled aluminum alloy

Burrs, when shearing and sawing, there will be thin, short, sharp and thin metal thorns of varying sizes on the edge of the aluminum plate.

Shrinkage, cracks on the edge of the ingot, which cannot be seen from the outside, will be found after sawing.

Pine branch-like pattern, the aluminum plate produces slip lines due to uneven deformation during rolling, and the surface presents regular pine branch-like patterns. In severe cases, the surface of the aluminum plate will be uneven, with obvious color difference, but very smooth, which mainly affects the surface appearance, and in severe cases, it will also affect the comprehensive performance of the aluminum plate.

Pattern defects, due to the incomplete pattern of the patterned aluminum plate, the damaged pattern, and the insufficient rib height, some defects are caused, which not only affects the use, but also affects the appearance.