As we all know, aluminum has been used in many aspects in the home, especially in aluminum kitchen utensils and 3C electronic digital products and smart phones. These items usually require beautiful appearance and special performance to attract consumers and then let people explore its intrinsic value. Therefore, mirror treatment of aluminum products in life is extremely important in the surface treatment process of aluminium sheet suppliers. The most commonly used processes in the production of mirror-polished aluminum sheets are mechanical polishing, electrolytic polishing and chemical polishing.
1. Mechanical polishing
It is a polishing method for mirror aluminum sheet that relies on cutting and plastic deformation of the material surface to remove the polished convexities to obtain a smooth surface. Generally, oil stone strips, wool wheels, sandpaper, etc. are used, and manual operations are the main ones.
2. Chemical polishing
Chemical polishing is to make the surface microscopic convex part of the material in the chemical medium dissolve preferentially than the concave part, so as to obtain a smooth surface. The main advantage of this method is that it does not require complex equipment, can polish workpieces with complex shapes, and can polish many workpieces at the same time, with high efficiency.
3. Electrolytic polishing
The basic principle of electrolytic polishing is the same as that of chemical polishing, which can make the surface smooth by selectively dissolving tiny protrusions on the surface of the material.
After the polished mirror surface treatment, the mirror-polished aluminum sheet is anti-static, dust-free and easy to clean, has strong anti-fingerprint ability, and has a scratch-resistant surface hardness of sapphire level. The surface oxide layer will never fall off. The color is uniform and can give metal devices. The surface has a high luminosity effect, and it can also show 95% high specular reflection performance, which solves the problem of easy sticking and greasy on the surface of kitchen items and aluminum tableware. After polishing, the surface of aluminum products is not only more beautiful, but also non-sticky. The improvement also makes the surface of the article smoother. The uniform and smooth surface can disperse and reduce the adsorption of corrosive media, and improve the corrosion resistance of the article. Therefore, it has many applications in the finishing industry, such as lighting, home appliances, kitchenware, electronic appliances, mobile phone shells and other industries.