1. The first is aluminum rod casting: aluminum ingot heating and melting, adding a certain amount of alloying elements (magnesium, silicon), cast by a casting machine into a round rod with different diameters.
2. Aluminum extrusion: The aluminum rod is first heated to a certain temperature to reach the critical point of aluminum liquefaction, then cut, hot sheared, sent to the extruder for extrusion, and extruded through the mold to the desired cross-sectional shape. Then, quenching and quenching are air-cooled and water-cooled. The state of air cooling is T5, and the state of water cooling is T6.
3. Processing after extrusion of the profile: The tractor pulls out the profile and cuts it to the required length by a hot saw, and moves the profile to the straightening machine by the moving cooling bed. (The aluminum profile is soft when it is extruded.) After straightening, it is cut with a fixed-length saw, and the transporter is loaded into the aging process.
4. Artificial aging: The material is placed in an aging furnace and heated to a certain temperature, and incubated for 2-3 hours, which can significantly improve the mechanical properties of the aluminum profile, especially the hardness.
5. Surface treatment: Anodizing - The sulfuric acid solution is connected to the anode of the DC power supply to carry out the oxidation-reduction reaction, and then a dense porous oxide film is formed on the surface, and then the pores are sealed, and the aluminum profile is more wear-resistant and corrosion-resistant. Electrostatic spraying - Using the Faraday effect of the electric field, the fine particles of the powder coating are uniformly adsorbed on the surface of the material. It protects the aluminum profile.
