轻量化的意义外文文献翻译、汽车车辆类外文翻译、中英文翻译
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The significance of lightweight
Automotive lightweight main guiding principle: to ensure stability on basis of improved performance, energy-saving design of the assembly partscontinuous optimization model spectrum.
The lightweight car, the car is to ensure strength and security of the premise, as far as possible to reduce the car's curb weight, thereby enhancing the car's power, reducing fuel consumption and reduce exhaust pollution. Experiments show that if 10% of automobile weight reduction, fuel efficiency can bincreased by 6% -8%; vehicle curb weight is reduced by 100 kg hundred kilometers can be reduced 0.3-0.6 liters; 1% of vehicle weight reduction, fuel consumption can be reduced 0.7 %. At present, due to the need for environmental protection and energy saving, lightweight car has become the world trend of automobile development.
Lightweight car is the main way:
①mainstream car models continue to optimize the size, specification size to retain the main parameters of the premise, to enhance the structural strength of the vehicle, reducing the amount of supplies;
② use of lightweight materials. Such as aluminum, magnesium, ceramic, plastic, fiberglass or carbon fiber composite materials;content的中文翻译
③ The computer design. Such as finite element analysis, local reinforcement design;
④ the use of load-bearing body, thinning the thickness of the body sheet metal.
Among them, the current major automotive lightweight measures mainly the use of lightweight materials. for automotive lightweight design of the metal material
The main vehicle through the car's lightweight materials to improve economy to contribute. Theoretical analysis and experimental results show thlightweight is to improve vehicle fuel
economy and effective way. In order to equirements of lightweight vehicles, some new material emerged and expanded the scope of application.
Nonferrous Alloys
To passenger cars, the 1973 vehicle used by the non-ferrous alloy of the total timber weight ratio of 5.0% in 1980 to 5.6%, while in 1997 it reachNon-ferrous alloys in automotive applications is the rapid growth trend of development of automotive materials. Aluminum
Steel aluminum density of about 1 / 3 is the most widely used lightmaterials. United States production of automotive products, for example, aluminum alloy 1976 per vehicle is only 39kg, 1982 reached 62kg, while in 1998 it reach100kg.
(1) cast aluminum alloy
Many elements can be used as cast aluminum alloy elements, only Si, Cu, Mg, Mn, Zn, Li in the mass production of great significance. Of course, widely used in the car is not the
simple binary alloy but also a variety of elements added to obtain a good overall performance.
The automobile industry is the main market of aluminum castings, such as Japan, 76% of aluminum castings, aluminum die casting 77% of automotive castings. Mainly used in aluminum alloy engine block castings, cylinder heads, pistons, intake manifold, rocker arms, engine mount bracket, air compressor connecting rod, clutch housings, clutch housings, wheels, brake parts, handles and cover shell-type parts and so on.
Aluminum casting inevitably flawed, casting can not be heat treated produce a result in the use of higher strength aluminum alloy castings is limited. On the casting for this production process has been improved, semi-solid casting forging forming method and method will be used to craft the future more.
(2) deformation of aluminum alloy
Refers to deformation of aluminum alloy aluminum alloy plate and extrusions and forging m
aterials, mainly used in automotive body panels on the boengine radiators, air conditioning condenser, evaporator, wheels, trim and suspension parts.
As the effect is obvious lightweight, aluminum alloy car body applications is expanding. September 1990 as the Japanese started selling cars with a Honda NSX Unibody aluminum, cold rolled steel plate than in the same light 200kg body attracted worldwide attention. NSX to the entire vehicle with aluminum 31.3%, as in the aluminum car body, using the 6000 series alloy outer plate, inner plate with 5052-0 alloy, most use the 5182-0 alloy frame; that the side door of the strength and stiffness requirements are high, the use of the 6N01 alloy-based, appropriate adjustments to the Mg and Si content of the alloy. Also useful in Europe and America for 2036 and 2008 alloy plates inside and outside the body. Aluminum radiator originated in Europe and then throughout the world. In Europe, after the 1980s, aluminum radiator has occupied 90% of the market. With? Car air conditioning, oil coolers, etc. The extensive use of aluminum heat exchangers market is rapidly expanding. From the material point of view, aluminum heat exchangers in a wide range of coating material applied to a large extent due to aluminum and aluminum cladding
successful development.

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