5052 aluminum plate products are widely used because of their good decorative properties after electrolysis, especially in the building materials industry, where their surfaces are treated accordingly. Its main process is to use tin-nickel mixed salt electrolytic coloring, and the color of the manufactured products is mainly champagne color, which is much brighter and fuller in color compared with monochromatic coloring.

Among them, during the extrusion process, there will be certain changes in oxidation coloring, mainly due to the influence of mold design, extrusion speed, temperature and cooling method of 5052 aluminum plate products extrusion. The mold design should be able to fully knead the feed materials, otherwise bright (dark) band defects will easily appear, and color separation may appear on the same profile; at the same time, the mold state and the extrusion lines on the surface of the profile also affect the oxidation coloring. Extrusion temperature, speed, cooling method and cooling time are different, so that the structure of the profile is not uniform, and the color difference will also occur.