We all know that the industrial aluminum profile is corrosion-resistant and has a beautiful surface. The surface of the industrial aluminum profile is a natural silver-white color, which is very beautiful.
However, the surface of many industrial aluminum profiles will become black and dark, which greatly affects the aesthetics of the equipment. Today, we will analyze the reasons for the black surface of industrial aluminum profiles.
1. Material problem. Some industrial aluminum profiles are black and dull as soon as they are bought. This should be a material problem. The iron content in the aluminum alloy exceeds the standard, and some are smelted with scrap aluminum. Such industrial aluminum profiles are cheap. However, the mechanical properties are obviously insufficient.
2. There is no anodic oxidation treatment, which is what we commonly call the base material and material. The surface of this industrial aluminum profile has not been oxidized, only a naturally formed uneven and thin oxide film, because aluminum is a lively metal. Under certain temperature and humidity conditions, oxidation, blackening and mildew are more likely to occur.
3. The cleaning agent is corrosive to a certain extent, and if there is too much residue when cleaning the industrial aluminum profile with the cleaning agent, the industrial aluminum profile will be corroded.
4. Some industrial aluminum profiles require deep processing after they are produced, while deep processing such as milling and punching requires spraying of emulsifiers, so the processed industrial aluminum profiles need to be spray cleaned.
Some manufacturers do not clean in order to save costs, or clean them incompletely, resulting in residual emulsifiers, which will corrode the aluminum profiles and cause the surface to blacken over the years.

Zhejiang SUNKEY Industrial Co., Ltd. Is located in Yuyao,Ningbo city of eastern Zhejiang.As a professional Industrial Aluminium Profiles Manufacturers and Industrial Aluminium Profiles Factory, the introduction of today's advanced production, quality control equipment, and built a set of casting, extrusion, anodizing, electrophoresis, powder coating, wooden in one of the large-scale professional aluminum manufacturing plant. We have our own foundry workshop, so we can offer good price and wholesale Industrial Aluminium Profiles. Annual production capacity of 45000 tons, the products include construction material, industrial material two series, nearly a thousand kinds of specifications, and specially designed for the customer to customize a variety of specific-type construction or industrial materials.