The production process of aluminum square tube mainly includes the following steps: Raw material preparation: The raw materials of aluminum square tube mainly include aluminum ingots and alloy elements such as silicon, copper, magnesium and zinc. In a specific electric furnace, the mixed raw materials are heated to a certain temperature to melt and mix evenly. During the smelting process, an appropriate amount of nitrogen or hydrogen needs to be added to help remove oxides and impurities and improve the purity of the alloy. Control the smelting temperature and time. Extrusion forming: The molten aluminum alloy liquid is injected into the mold, and the shape of the square tube is extruded through heating and pressure. The aluminum square tube after extrusion needs to be cooled and solidified. Stretching and cutting: Stretching can adjust the size of the square tube to make it more precise; cut it into the required length. These two links must be strictly controlled to avoid defects such as cracks and deformation. Surface treatment: The key process to improve the surface quality and corrosion resistance of aluminum square tubes. Common surface treatment methods include anodizing, spraying and electrophoresis. Anodizing forms a dense oxide film on the surface of the aluminum square tube to enhance its corrosion resistance and decorative effect; spraying and electrophoresis apply a coating on the surface to further improve its corrosion resistance and aesthetics. ‌→‌ Quality Control