Huawei Aluminum Co., Ltd

Aluminum and its alloys will oxidize in the air It is well known that the aluminum surface of the natural formation of the oxide film is amorphous, it will make the aluminum metal surface loss of the original luster, although this layer of natural oxide film will make aluminum metal surface Slightly passivated, but very thin, about 4 ~ 5nm, and the porosity, mechanical properties are poor, it can not effectively prevent the atmosphere of various media on the further corrosion of aluminum.   Anodized aluminum sheet is a sheet metal product consisting of aluminum sheeting exposed to an electrolytic passivation process that imparts a tough, hard-wearing protective finish on its surface. The protective layer formed by the anodizing process is actually little more than an enhancement of the natural oxide layer that exists naturally on the surface of the aluminum. This makes it an intrinsic part of the metal surface thus lending the products their outstanding durability and stren

(1) anodized aluminum sheet to prevent corrosion of products: the anodic oxidation of the film through the appropriate closed treatment, in the atmosphere have good stability. Whether it is from the sulfuric acid solution, oxalic acid solution or chromic acid solution in the normal process to obtain the oxide film, the corrosion resistance is very good, such as daily aluminum pan, pot, washing machine liner and so on. Chromic acid oxidation is particularly suitable for aluminum welding and riveting pieces. (2) anodized aluminum sheet protection of a decoration:  in the transparency of the oxide film, the oxide film can be adsorbed with a variety of organic dyes or inorganic pigments, the oxide film can be a variety of bright and bright colors and patterns, plus in recent years not The emergence of new technology such as the oxidation of a number of times the coloring, fireworks patterns, grain patterns, oxidized offset printing transfer, porcelain oxidatio