As a decorative material, the quality of mirror aluminum plates is particularly important, so users should pay special attention when purchasing mirror aluminum plates. Below, Huawei Aluminum Factory will introduce you to the selection criteria for mirror aluminum panels.
1. There are no cracks, corrosion, and edge cracks on the surface of the aluminum plate, and there is no diffusion spot on the surface of the plate with a thickness greater than 0.6 mm;
2. The surface of the aluminum plate is allowed to have slight pressure scratches, metal, and non-metallic indentations, stab wounds, scratches, roll marks, and pine tree-like patterns. However, the thickness of various defects shall not exceed the allowable negative deviation of the plate thickness, and a small thickness shall be guaranteed;
3. On the surface of each square plate, the total area of air bubbles should not exceed 100mm2
4. When processing composite aluminum plates, whether exposed parts of the coating and surface bubbles are allowed;
5. The defects of the board are allowed to be checked with 400 grit sandpaper, and the grinding depth shall not exceed the allowable thickness deviation; the edges of the board should be cut neatly without burrs.
In addition, there is a very important point. There are no central delaminations and cracks inside the mirror aluminum sheet. Consumers must check carefully when purchasing.