How should aluminium be selected for automotive applications?

How should aluminium be selected for automotive applications?

How should aluminium sheets be selected for automotive use and what are its processing properties? With this question, we at Haomei Aluminium take you to understand today.

When selecting aluminium for automobiles, we should pay attention to the homogeneity of the organisation (weave), including both the size of the grain size of the matrix organisation and the proportion of the micro-weave that facilitates formability. The macroscopic appearance of a material's performance is based on its microscopic intrinsic nature. A reasonable control of the microstructure and weave can lead to the desired macroscopic properties.

Given the problem of the mismatch between the production time of the raw material aluminium plant and the automotive plant, the interphase process can occur with the natural ageing of the car, which affects the subsequent forming. To solve this problem, domestic and foreign material engineers have carried out an in-depth systematic study of the theoretical mechanism of the process and proposed a pre-aging/pre-strain treatment process. Through the process of pre-aging after solid solution treatment in the raw material plant, the natural ageing problems during transport and storage of the aluminium for automobiles can be mitigated, thus providing better formability during the stamping process.

We also need to pay attention to whether the manufacturer has a reasonable treatment of the surface of the aluminium sheet. This will facilitate the subsequent coating process. The surface treatment is mainly for the cold rolled state, divided into Mill Finish (MF), Electron Discharge Texture (EDT) and Electron Beam Texture (EBT) treatment.

Through our introduction, we believe that you have an in-depth understanding of the production process and performance requirements of aluminium auto body panels, and have a deeper understanding of the key technologies and difficulties involved, we hope that our interpretation of aluminium for automobiles will be helpful to you.