Widely used aluminum alloy sheet is inseparable from the unique chemical composition and properties of aluminum alloys appear, has become the king of production applications, and its predecessor, metallic iron, before this is a very important production applications metal, but the emergence of aluminum, gradually replaced the king of the place of iron, aluminum and iron article compares the advantages and disadvantages, to introduce car aluminum production applications is how to become a first metal:
1. The weight advantage of aluminum car
Small proportion of aluminum than cast iron, under the premise to meet the strength requirements, aluminum is much lighter. In the car's engine, the engine light vehicle weight distribution can exert a positive influence, but also the quality of vehicle lighter. So, this is dominant on the aluminum cylinder.(aluminium 7075 plate)
2. The volume of the advantages of aluminum car
For the same reason, a small proportion of aluminum, aluminum structural strength per unit volume is less than the cast iron, so aluminum cylinder volume but generally bigger, but the weight is about 40% lighter.(aluminium 7075 plate)
3. The advantages of corrosion resistance and strength of aluminum car
Easy aluminum and water produced during the combustion chemical reaction occurs, the corrosion resistance is less than iron block, especially for temperature and pressure are higher supercharged engine, even more so. This is the dominant iron block.
4. aluminum car antiknock and cooling advantages
Aluminum thermal conductivity faster, so good cooling performance, the engine can help reduce the probability of occurrence of abnormal combustion, the same compression ratio and aluminum cylinder engine can use a lower grade of gasoline than cast iron engine block. This aluminum cylinder dominant.(6061 aluminium plate)
5. Automotive aluminum friction coefficient advantage
In order to reduce the inertia of the reciprocating parts, improving the speed and responsiveness of the piston mostly use aluminum as the material. Cylinder wall is cast iron, the coefficient of friction between aluminum and iron will be reduced, so that the engine performance to play good. Some so-called "aluminum" cylinder engines also use cast iron lining, this iron block and aluminum cylinder advantages of each half.