Aluminum alloy automobile wheel hub is made of aluminum alloy labeled A356.20. The various elements are as follows:
Al Al: 91% 92%
Antimony Ti: 0.15%
Si Si: 6.5 to 7.5%
Mg magnesium: 0.2% 0.4%
Mn manganese: 0.5%
Wheel as the vehicle carrying one of the most important security components, it is not only light weight under applied perpendicular to the round of the pressure on the yi, also by the effect of dynamic torque when a vehicle is in starting, braking and turning vehicles in the process of driving, the impact of roads, road obstacles from different directions such as dynamic load to the irregular alternating stress, the stress distribution is very complex and dynamic change.This requires the size of the hub precision, dynamic balance, high fatigue strength, stiffness and elasticity, light weight, beautiful.Aluminum alloy wheel hub with its good comprehensive performance to meet the above requirements and won the favor of the market is gradually replacing steel wheel hub as the best choice, Aluminum alloy wheel hub has also become the second widely used field of aluminum alloy in automobiles.
Automobile industry, as one of the pillar industries in China, has developed rapidly in recent years, which also drives the development of aluminum alloy automobile wheel industry.At present, the production capacity of foreign aluminum alloy wheel hub is gradually transferred to China and other third world countries. China has become the world's largest producer of aluminum alloy wheel hub.