Lightweight titanium wheel bolts improve automobile performance
“Automobile lightweight” has become the trend of automobile development in the world. The test shows that if the weight of the whole vehicle is reduced by 10%, the fuel efficiency can be increased by 6% – 8%; for every 100kg of vehicle curb weight reduction, the fuel consumption per 100km can be reduced by 0.3L-0.6L, and the carbon dioxide emission can be reduced by about 5g/km; the weight of the vehicle can be reduced by 1%, and the fuel consumption can be reduced by 0.7%. The vehicle, especially the under spring mass, can significantly improve the damping efficiency, improve the grip, reduce the inertia and improve the handling. Its acceleration performance will be improved, and the braking distance will be reduced.
As the most detailed and important part of the automobile, the wheel bolt, under the premise of ensuring the strength and toughness, is of course the lighter the better. Changing bolts is not just about replacing old bolts. The bolt plays a decisive role in the performance and driving control of the car, and the extremely excellent bolt, not only its mechanical strength, fatigue, corrosion resistance to meet the standards, but also light enough! Compared with the original bolt, the weight of titanium wheel bolt is reduced by more than 45% and its strength is increased by more than 125%. It is the first titanium alloy wheel bolt in the industry that meets or even exceeds the standards of 8.8, 9.8 and 10.9.
Not all titanium alloy can be used as the raw material of titanium wheel bolts, because the wheel bolt is subject to high shear, large load-bearing, and long-period fretting wear, and it is also required to have “toughness”. Toughness is the ability of a material to absorb energy during plastic deformation and fracture. The better the toughness, the less the possibility of brittle fracture and the higher the safety. Generally, the higher the strength of the same material, the lower the toughness, and vice versa. For example, the current market GR5 titanium alloy, although it has high strength, but its toughness is low. Through repeated research and experiments, we have developed a titanium alloy, which is superior to the traditional steel bolts and other titanium alloy bolts in strength and toughness. It is lighter and more reliable, which not only improves the safety factor of fastening, but also presents comfortable and light road feedback to improve driving experience.
