Why do we need to carry out oxidation galvanizing on the surface of Dalian

Oxidation treatment mainly includes anodic oxidation, chemical oxidation and micro arc oxidation. The surface morphology, oxide thickness, friction resistance and corrosion resistance of aluminum alloy after three surface treatments were analyzed and compared in detail. The results show that after different surface treatments, the aluminum alloy surface can form oxide films with different thickness, the surface hardness and friction resistance are significantly increased, and the corrosion resistance of the alloy is also improved in varying degrees. In terms of overall performance, micro arc oxidation is better than anodic oxidation, and anodic oxidation is much better than chemical oxidation.

Aluminum is an active metal. When it reacts with oxides in the atmosphere, it will naturally form a layer of alumina film on its surface. Since this alumina will not change once formed, it can protect the internal aluminum. This explains why aluminum usually rarely corrodes. The oxide film produced naturally is very thin. In contrast, the thick and strong oxide film is artificially produced by electrochemical treatment, which is called anodic oxide coating. In fact, aluminum products are put into the electrolyte (acid solution). When aluminum products are used as anodes, when low DC, AC or AC / DC are applied, an oxide film will be formed on the surface. If different types of electrolytes, different temperatures and different current densities, different types of aluminum alloys and other conditions are combined.

Dalian surface oxidation galvanizing processing aluminum oxidation processing of materials can effectively improve corrosion resistance and enhance durability. Aluminum oxidation is widely used in external and architectural applications between buildings all over the world, or when some aluminum is exposed to harsh environment. During anodizing, the surface effectively enhances the protection against staining and scratching. At the same time, it is also widely used in furniture. The anti fingerprint effect stabilizes the growth trend of its application in household appliances and other consumer products.

The original surface of aluminum has defects such as natural oxide film and other pollutants, and even slight bruises and scratches. Before the surface treatment of aluminum, it needs to go through the processes of processing, forming, heat treatment and storage, and is more or less stained with certain pollutants such as grease and dust. In order to improve the decorative effect of aluminum, the subsequent main process of aluminum surface treatment (anodic oxidation processing or chemical conversion processing, etc.) is carried out smoothly, The surface of aluminum must be pretreated first.

Anodizing process has become a conventional surface treatment process for aluminum alloy. With the increasing use of aluminum alloy in various industries, more and more enterprises are looking for an anodizing plant with stable quality and legal compliance. Chongqing yinglutong metal surface treatment Co., Ltd. specializes in anodizing of aluminum alloy and is good at hard anodizing, ordinary oxidation, conductive oxidation Dyeing oxidant passivation treatment.