Views:0 Author:Site Editor Publish Time: 2021-09-15 Origin:Site
Aluminum is a light metal, with good conductivity, thermal conductivity, but also has good corrosion resistance. At the same time, the mechanical properties of aluminum alloy are better than traditional metal materials, the melting point of aluminum is low, the recovery rate of aluminum is not less than 90% in the whole use and recycling process, aluminum alloy has very good regeneration, so aluminum alloy is the most ideal material to realize the lightweight of automobile at present.
The use of aluminum alloy parts on the car can effectively reduce the vehicle weight, so that the center of gravity of the car is reduced, the real realization of the vehicle lightweight. After the vehicle is lightweight, the acceleration performance of the vehicle will be improved, and the vehicle will be more stable and comfortable, noise and vibration will also be improved.
The application of aluminum alloy in automobile lightweight mainly includes aluminum alloy forgings, metal die castings, aluminum alloy extrusion and drawing products, etc. .
Casting aluminum alloy is most widely used in the current lightweight process of automobiles, mainly used in the structure of automobile engines, chassis, wheels, etc. . The engine has always been called the “Heart”of automobiles, the application of aluminum alloy in cylinder head, cylinder block, piston and other parts can not only effectively reduce the overall weight of the engine, but also give off the heat generated in the work of the engine in time and improve the efficiency of the engine.
The weldability of aluminum alloy sheet is worse than that of steel in the process of using, which improves the weldability and welding quality of aluminum alloy sheet and the application range of aluminum alloy. Hot forming technology, superplastic forming technology and electromagnetic coincidence forming technology are applied to improve the formability and quality of aluminum alloy panels.
At present, in addition to the traditional aluminum alloy metal materials, aluminum matrix composites have been used in light-weight automobile manufacturing due to their advantages of low density, high strength and high corrosion resistance, compared with the traditional cast iron piston, the weight of the piston made of aluminum matrix composite is reduced by 10% , but the heat dissipation is increased by 4 times. Due to the control of price and production quality, aluminum matrix composites have not formed a large scale yet, but some of the automotive parts have shown its excellent performance.