Prospects for the development of aluminium alloys for automobiles

Prospects for the development of aluminium alloys for automobiles

Aluminum has good physical and chemical properties, industrial production of casting, forging, punching process can be applied, is a variety of casting process can be used to manufacture parts of one of the few metal materials, the most suitable for the widely used pressure casting process. However, the cost of aluminium alloys is still higher than that of steel materials. The weight of the car body is about 30% of the total weight of the car, so the light weight of the car body occupies a pivotal position.

In the car inside and outside the plate with aluminium alloy plate instead of steel plate can make the body reduce weight about 40%-50%; such as the use of aluminium alloy covering parts of the whole car weight reduction 10%-15%, it can be seen that the use of aluminium alloy body plate weight reduction effect is very significant. Aluminum alloy provides a good application basis and market prospect in the application of automobile light weight, which is bound to bring greater opportunities for the application of aluminum alloy automobile coverings. Therefore, the use of aluminium alloy plates instead of steel plates to manufacture body coverings is also an inevitable path for the lightweighting of automobiles. The entire body of the German Audi A8 senior sedan is made of aluminium, the frame adopts three-dimensional frame structure, and the coverings are made of aluminium plate stamping. This aluminum body compared with the steel body, the quality is reduced by 30-50%, fuel consumption reduced by 5-8%.

At present, China ranks fourth in the world after the United States, Japan and Germany in terms of car production. As for the rate of aluminium in automobiles, the current use of aluminium in automobiles in developed countries has reached 138kg, with an aluminium rate of 12%, therefore, the development prospect of the aluminium alloy market for automobiles is very broad.