Application of Haomei thin 5052 H Aluminum Sheet in Bus Skin

As a substitute for steel, aluminum is widely used in automobile lightweighting. Taking the bus skin as an example, the 5 series aluminum alloy 5052 aluminum plate has been applied in some large passenger cars.

The skin is the main part of the square and the large body of the car. It has three rectangular square holes for installing safety windows, side doors and oil machine doors. The four corners cut out the gaps of the wrapping corner parts. The skins at different positions of different large plates on the cabin have different structures, but generally rectangular thin aluminum plates with a thickness of 1.5 to 2.0 mm are used. The processing precision and manufacturing quality of the skinned aluminum sheet directly affect the overall performance and service life of this cabin. Taking the 5052 H aluminum plate for automobile skin as an example, it is required that the surface of the aluminum plate is flat, free from warpage, scratches, bumps, etc., and the warpage is more than 30 mm in the range of 1000 mm, and it is prohibited to be used as a large plate skin. Because of the large plate of the warping title, although the tooling can forcibly flatten it in the bonding foaming process, the internal stress is not eliminated, which may be a hidden danger of the skin being debonded and bulging.

Haomei Aluminum 5052 aluminum plate is used in the body skin of a large-scale new energy bus. The bus is made of Haomei 5052-H32 aluminum plate with a thickness of 1.5mm. The 5052 aluminum plate is an aluminum-magnesium alloy. Aluminum plate, this alloy has high strength, especially with fatigue resistance, and high plasticity and corrosion resistance. The 5052 aluminum plate also contains a small amount of chromium. The effect of chromium is similar to that of manganese, which improves the resistance to stress corrosion cracking, improves the strength of the base metal and weld, and reduces the tendency of weld cracking. These properties are in line with the performance requirements of corrosion resistance and fatigue strength of aluminum sheets for skinning.

In addition to the 5052 aluminum plate, the aluminum plate produced by Haomei Aluminum has been widely used in other parts of the car: for example, the application of 6061 aluminum plate in automobile/card wheel hub, the application of 5182 aluminum plate in automobile door and fender, etc., 5083 aluminum plate Application in air reservoirs, etc.