Section optimization of extruded aluminum parts for automobiles

With the acceleration of automobile lightweight, the number of parts manufactured with aluminum alloy extruded profiles will also increase year by year, which has higher requirements for cross-sectional design and process optimization of extruded aluminum parts. This article introduces the application of extruded aluminum parts in automobiles. At the same time, through the feasibility analysis and research of specific products, the product section is optimized, and the extrusion process parameters are adjusted, thereby improving the product's compressibility and effectively ensuring Product organization and sexual pre

With the rapid acceleration of low-carbon economy and low-carbon transportation construction, the requirements for lightweight vehicles are becoming increasingly urgent. The density of aluminum in plasticized materials is small, only 27gcm2, which is 1/th of steel. When one or more elements are added in pure words, an alloy is formed. Compared with gentian aluminum, aluminum alloy can improve strength and hardness. Therefore, it is most desirable to use singing alloy materials instead of steel and Lao Tie to make auto parts. The alloy materials can be divided into cast aluminum, extruded aluminum and stamping according to the process. Among them, the development of extrusion aluminum processing technology has greatly expanded the application space of extruded aluminum parts in automobiles. Used to manufacture auto parts, the volume of the entire vehicle can be reduced by 80% 4%a

The application of extruded aluminum in automobiles commonly used extruded aluminum alloys for automobiles are 3003, 3103, 50496No1, 6005, 6061.6063, 6082, 7No1, and 7003.

7021, 7029 alloy, etc. Among them, 3XXX series aluminum companies only use D-extruded pipes, and the rest are used for extruded materials. Extrusion of aluminum can produce hollow and thin-walled profiles with complex cross-sections, and has the same impact strength as steel structures. When the car is hit by accidents In the event of an accident, it can effectively absorb the impact and protect the safety of the occupants. In order to strengthen the buffer and dig out the strength to resist the magical attack, the sections of the profiles are mostly in the shape of "Kouri", "Mesh·Chinese".

In recent years, with the development of extruded aluminum processing technology, high-precision 3D bending processing technology for profiles, and the establishment of 6XXX and 7XXX series aluminum alloy materials for microstructure control and uniform yield strength control heat treatment pull technology, extruded aluminum has become more effective in automobiles. The application space is greatly expanded. Figure 1 shows the main parts used in automobiles.

With the development of processing technology, the application of 7XXX series extruded aluminum in car bodies has become widespread. Because the strength of 7XXX series alloy is higher than that of 6XXX series alloy, it has higher requirements for the design and process optimization of extruded steel parts.

The initial product cross-section is in the development stage of a certain model, the front section of the front longitudinal frame is made of extruded aluminum, and the cross-section is