Spotless anodized aluminum sheet for sale Haomei

Anodized aluminum sheet for refers to aluminum sheet That is anodized. It has a variety of excellent properties, so it is loved by people. However, when manufacturing anodized aluminum sheets, some problems can arise. So what are these problems? Why is this? Let's take a look today!

The anodization of aluminum is to use aluminum parts or aluminum alloys as anodes and lead plates as cathodes to electrolyze in aqueous solutions such as sulfuric acid, oxalic acid, and chromic acid to form an anodized film on the surface. The processing equipment of anodized aluminum sheet is simple, easy to operate, high production efficiency, does not consume electricity, has a wide range of applications, and is not limited by the size and shape of parts. The oxidation process can be divided into two categories: alkaline oxidation method and acid oxidation method according to its solution properties. Among them, sulfuric acid anodizing treatment is the most widely used. The sulfuric acid anodized film of aluminum and aluminum alloys has high adsorption capacity, and is easy to be sealed or anodized and colored, which further improves its corrosion resistance and appearance. The thickness of the anodized film of anodized aluminum sheets is generally 3 to 15 μm. The sulfuric acid anodizing process of aluminum alloys is simple to operate, the electrolyte is stable, and the cost is not high. It is a mature anodizing process method. However, in the process of sulfuric acid anodization, various failures are often inevitable, which affect the quality of the anodized film. It is of great practical significance to carefully summarize and analyze the causes of the failures and take effective preventive measures to improve the quality of sulfuric acid anodization of aluminum alloys. Since the aluminum oxide film has good insulation, the anodized aluminum sheet must be firmly mounted on a general or special fixture before anodizing to ensure good electrical conductivity. The conductive rod should be made of copper or copper alloy material and ensure sufficient contact area. At the contact between the fixture and the part, it is necessary to ensure the free passage of current, and to reduce the contact marks between the fixture and the part as much as possible. If the contact area is too small and the current density is too large, overheating will cause parts and fixtures to be burned easily. The phenomenon of no oxide film or incomplete film layer is mainly due to poor contact between the fixture and the workpiece, poor conduction or because the oxide film on the fixture is not completely removed.

Now do you understand the problems that can arise in the production of anodized aluminum sheets for sale? So, how should our merchants make themselves pick products without defects? We should inquire about the manufacturer's production methods and make judgments. If you need aluminum plate, please contact us!