Aluminum alloy is a leader in lightweight materials. Aluminum alloy auto parts take into account the quality, cost, and safety of the vehicle. It can effectively reduce the weight of the vehicle, reduce fuel consumption, and increase the cruising range. Tesla Model S uses a large amount of aluminum alloy materials. The proportion of aluminum alloy materials used in NIO ES8 is as high as 96.4%, and the body weight is only 335kg. The amount of aluminum used in the new Audi A8 is as high as 58%. The front and rear shock towers and torsion boxes are made of aluminum alloy castings. , the front and rear longitudinal beams are made of aluminum alloy profiles, and the floors, front panels, etc. are made of aluminum alloy plates. With the development and progress of China's automobile industry, the manufacturing, connection and painting processes of aluminum alloy parts have become increasingly mature and are widely used in key parts of the body.
Major OEMs and supply chains have begun to explore lightweight body technology very early. The main technical routes include optimizing body structure design, lightweight material selection, and application of advanced manufacturing technology. As a lightweight alloy, aluminum alloy has the advantages of good formability, usability and environmental friendliness, and has great potential for lightweighting the car body.
Aluminum alloy has the following advantages: Aluminum alloy materials are rich in resources and are one of the most widely distributed and abundant elements in the earth's crust; aluminum alloys have low density (about 2.7g/cm3) and high specific strength; aluminum alloys are easy to oxidize and have surface It forms a dense oxide film with good corrosion resistance; good formability, suitable for casting, extrusion, forging and stamping processes; high energy absorption, improves vehicle collision safety; easy to recycle and regenerate, environmentally friendly. Due to the advantages of aluminum alloys, the application of aluminum alloys in car bodies has increased year by year in recent years, and its application weight ranks second, second only to steel.