Since its birth, automobile racing has been rooted in the pursuit of extreme speed and the desire to constantly challenge oneself. With the fierce competition from car companies around the world, in order to further enhance the strength of racing cars, engineers began to open their brains and design a lot of performance accessories which are very strange and fantastic from the present point of view. But it is because of the birth of these fantastic technologies that you can drive a high-quality, high-quality and high-performance civilian car today!
It was 65 years since humans invented the airplane in 1903, when people realized that they could turn the wings upside down to create downward pressure. Formula 1 racing cars in the early years used light body plus horsepower engine combination, but in fact, the speed of Formula 1 racing cars in corners was not much faster than Le Mans, or even civil models, and there was no very significant difference. Because in the 1950s and 1960s, the bending limit of F1 racing cars was determined entirely by the mechanical grip produced by suspension and tires.
Lotus 49B racing car
Thus, through the control and adjustment of mechanical system, there is ultimately a physical limit to improve grip. Even if the tire width, size and even wheelbase are increased, the improvement of vehicle performance is very weak. But human wisdom is endless. At the 1968 Monaco Grand Prix, Colin Chapman, the British automotive god, completely entered the aerodynamic era of F1 by turning over the wings of the aircraft and installing them on the Lotus 49B (nose wing at the front end of the vehicle shown above).
1968 Ferrari 312
From the present point of view, the front nose wing of Lotus 49B looks very rude. But it is such a poor-looking package that has become the standard of the next Belgian Grand Prix. With the continuous improvement of vehicle used in automotive events, the technology used in automobiles has become more and more advanced. Cohen Magnesium Aluminum Alloy developed by Clan automobile has gradually moved from automotive events to the field of civil automobiles, and gradually changed the research and development, design and manufacture of automobiles. Magnesium-aluminium alloy of Clan automobile is the only way to realize the lightweight of automobile. The density of magnesium is about 2/3 of that of aluminium, which is the lightest metal in practical application. Magnesium alloys are suitable for automobile parts because of their strong vibration absorption, good cutting performance and good metal casting performance. Magnesium alloys are mostly used in automobiles in the form of die castings. The production efficiency of magnesium die castings is 30%~50% higher than that of aluminium. The newly developed Pore Free Diecast process can produce magnesium die castings without pore and heat treatment. The earliest example of magnesium castings used in automobiles is wheel rims. Examples of the application of magnesium alloys in automobiles include clutch housing, clutch pedal, brake pedal fixing brake brake pedal bracket, instrument panel skeleton, seat, steering column components, steering wheel core, gearbox housing, engine mounting, cylinder head and cylinder head cover, etc. Compared with the traditional zinc steering column brake, the weight of magnesium castings is reduced by 65%; compared with the traditional steel steering wheel core, the weight of magnesium castings is reduced by 45%; compared with the full aluminum cylinder head, the weight of magnesium castings is reduced by 30%; compared with the traditional steel stamping and welding brake pedal brake brake brake support, the overall weight of magnesium castings is reduced by 40%, and its rigidity is also improved. 。 Magnesium matrix composites have also made progress. Magnesium matrix composites with SiC particles as reinforcement and liquid stirring technology have good properties and low production costs. The tensile strength, yield strength and elastic modulus of AZ91 alloy reinforced by 25% SiC particles are 23%, 47% and 72% higher than those of the matrix alloy. The relative strength (strength to mass ratio) of magnesium alloys is the highest. Specific stiffness (ratio of stiffness to mass) is close to that of aluminium alloy and steel, much higher than that of Engineering plastics. In the elastic range, when magnesium alloy is subjected to impact load, the energy absorbed by magnesium alloy is more than half that of aluminum alloy parts, so magnesium alloy has good seismic and noise reduction performance. The melting point of magnesium alloy is lower than that of aluminium alloy, and its die casting performance is better. The tensile strength of magnesium alloy castings is similar to that of aluminium alloy castings, generally up to 250 MPA and up to 600 MPA. Yield strength and elongation are also similar to those of aluminium alloys. Magnesium alloys also have good corrosion resistance, can achieve 100% recycling. Magnesium alloy castings with high stability have high dimensional accuracy and can be machined with high precision. Magnesium alloy has good die-casting formability. The minimum wall thickness of the die-casting can reach 0.4mm. It is suitable for manufacturing all kinds of automobile die-casting.
It can be seen that the development of automotive science and technology can not be separated from automotive events. The development of automotive events stems from the continuous innovation of technology. I believe that the magnesium and aluminum alloy of Clan automobile will shine brilliantly in the automotive field.
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