(1) In the process of extrusion, the extruded metal obtains a stronger and more uniform three-dimensional compressive stress state in the deformation zone than that of roll forging, so extrusion can give full play to the plasticity of the processed metal, which can be used to process difficult-to-deform metals that cannot be processed by roll forging, and can also be used to manufacture various hollow or solid complex cross-section members.

(2) Because the geometric section of aluminum profile is variable and its components have high rigidity, it can improve the rigidity of the car body, reduce its NVH characteristics and improve the dynamic control characteristics of the vehicle.

(3) Because the section of aluminum profile can be controlled, the functional integration of components can be improved and the number of components can be reduced. At the same time, accurate welding positioning can be realized by subsection matching.

(4) After quenching and aging, the longitudinal strength properties (Rm, Rp0.2) of products with extrusion benefits are much higher than those of similar products processed by other methods.

(5) The extruded product has good surface color and corrosion resistance, and no other anti-corrosion surface treatment is needed.

(6) The flexibility of extrusion processing is great, the cost of tooling and die is low, and the cost of design change is low.