Scratches and abrasions on the surface of aluminum alloy

Metal indentation, metal shavings or metal fragments are added to the surface of the aluminum plate After the indentation is scraped off, irregular depressions will appear. This indentation will destroy the continuity of the aluminum plate surface and have a great impact on the corrosion resistance of the aluminum plate.

Scratches, because sharp objects, such as metal wires or the corners of aluminum plates, contact the aluminum plate surface, when sliding relative to each other, will cause single-strip distribution of scratches. These scratches will cause the oxide film and the continuity of the aluminum coating to be destroyed, which will reduce the corrosion resistance and mechanical properties.

Scratches, refers to the relative sliding or dislocation of the prism-shaped objects after contact with the aluminum plate surface, which will cause group-shaped, vertically distributed scratches on the surface of the aluminum plate. Scratches will destroy the oxide film and the cell aluminum layer, reducing the corrosion resistance of the aluminum plate.