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The main material of automobile lightweight: Aluminum
- 2017-11-09 09:55 -
The lightweight car is the development trend of the automobile industry, automobile parts general statistics show that the weight of each fuel can be reduced by 1%, 1%; each moving parts is reduced by 1%, fuel saving 2%, reduce vehicle weight can achieve great economic and environmental benefits. All kinds of new materials are used in the automotive industry, in which aluminum is the most valuable one.
Aluminum is the second largest metal materials used by human beings, from 1970s onwards, one of the most obvious change of car technology is extensive use of lightweight materials, appeared more and more aluminum parts, mainly concentrated in the body, engine, air conditioning, car bumpers, wheels, trim, seat etc..
The density of aluminum is only 1/3 of steel. Under the premise of ensuring the quality and function of the car, the use of aluminum products can minimize the quality of components to achieve the goal of energy saving and emission reduction. In terms of passenger cars, the proportion of aluminum used in each car in 1973 was 5%, increased to 5.6% in 1980, and 9.6% in 1997. The rapid growth of aluminum alloy in automotive applications is a major trend in the development of automotive materials.
Due to the lightweight effect, application of Aluminum Alloy on the body is expanding, at present, the United States, Japan, Germany is the vehicle by national Aluminum Alloy most, such as Volkswagen AudiA8, A2, Aluminum Alloy with Japan NXS body amounted to 80%. The data show that replacing the traditional steel structure with aluminum alloy structure can reduce the automobile quality by 30% to 40%, reduce the engine manufacturing by 30%, and reduce the wheel weight by 50%.
Application of aluminum alloy in automobile
The car engine with Aluminum Alloy lightweight is most obvious, generally can lose weight more than 30%, in addition, the engine cylinder block and cylinder head are thermal conductivity, strong corrosion resistance, and Aluminum Alloy has very prominent advantages in these areas, so the automobile manufacturing plant for research and development of aluminum engine have.
Because of its light weight, good heat dissipation and good appearance, aluminum wheel wheel has gradually replaced the steel wheel hub. In the past 10 years, the global aluminum alloy car wheel growth rate of 7.6%, according to the analysis, by 2010, the car wheel aluminum rate can reach 72% ~ 78%.
Aluminum Alloy is also widely used in other parts, such as automobile General Motors Corporation with 7021 aluminum manufacturing Smure car bumper reinforced bracket, Ford Motor Co with 7021 aluminum manufacturing Lincoln Town enhanced car bumper bracket. The automobile suspension is also applied Aluminum Alloy material, effectively reducing the quality of parts, improve the ride comfort and stability, such as the use of disc brake 6061 claw forging production, power transmission frame etc.. In addition, aluminum alloy is also widely used in automotive air conditioning systems, such as Japan 6595 aluminum alloy car radiator and refrigerator radiator.