Surface vibration marks and imprints on hot-rolled aluminum alloys

Dark channel, when the narrow plate is rolled into a wide plate, the gloss deviation parallel to the rolling direction will appear on the wide aluminum plate which will appear continuously on both sides of the aluminum plate, affecting the appearance.

Knife mark, when grinding the roller, the grinding mark of the grinding wheel will be transferred to the surface of the aluminum plate, which will produce marks and affect the appearance.

Vibration mark, at right angles to the rolling direction, with a slight spacing, straight-line glossy pattern, caused by the rolling roller is called rolling vibration mark, caused by the straightening roller is called straightening mark, it feels good to touch, and is more common in hard alloy aluminum plates.

Imprint, there are scars, marks or color blocks on the roller, which are copied to the surface of the aluminum plate when passing through impurities, and the imprints are generally distributed periodically.