Peeling and black peeling on the surface of the board

Peeling refers to the local peeling of the surface of the aluminum plate The layer is relatively thin and the cracks turn up.

Cracked edges refer to the cracks on the edge of the aluminum plate. In severe cases, the overall structure of the aluminum plate will be destroyed.

Black skin refers to the side part of the ingot, where the surface structure remains on the surface of the aluminum plate. This is an impurity on both sides of the aluminum plate, with a width of several 10mm, parallel to the rolling direction, which greatly affects the appearance of the aluminum plate.

Tissue stripes refer to band-like stripes parallel to the rolling direction caused by uneven ingot structure or coarse grains. If it is anodized or pickled, it will become more obvious.