Aluminum plate sanding machine(No.3,No.4) is mainly suitable for stainless steel, aluminum and other metal plate surface grinding and polishing processing. Particle size (number) or a change of different composition of abrasive belt, and select the appropriate process parameters, can make the surface of the plate processed different thickness or depth of intermittent straight to silking (No. 4 or short said snow silk, silk), to achieve the goal of light decoration.