Aluminum tube is a kind of non-ferrous metal tube. It refers to a tubular decorative material formed by processing pure aluminum or aluminum alloy. It is used in many places, such as: automobiles, ships, aerospace, aviation, electrical appliances, agriculture , electromechanical, household, etc. The aluminum tube itself is relatively thin, which is very suitable for the industrial production of thin-walled copper-aluminum tube welding technology industry.
The production process of aluminum tubes includes three processes of casting, extrusion and coloring. Aluminum tube oxidation treatment is very important in the production process. What does aluminum tube oxidation mean? Aluminum tube oxidation is also called surface anodic oxidation. After surface oxidation, the aluminum tube material greatly improves corrosion resistance, hardness, wear resistance, insulation, heat resistance, etc.
The oxidation of aluminum is generally carried out by acidic electrolysis. The negative oxygen ions in the electrolyte can reach the surface of the aluminum and continue to form an oxide film. The acidic electrolyte will chemically dissolve with the outer oxide film that it contacts. At this time, the thickness of the oxide film will become thicker, and when the speed of oxide formation on the aluminum surface is gradually equal to the speed of chemical dissolution, the thickness of the oxide film will reach the maximum. At this time, the aluminum oxide film is porous, and it is easy to absorb dyes and colored substances, so that it can be dyed and improve the decorativeness of the surface of the aluminum tube.
