The density of aluminum alloy hub is relatively low, about 1/3 of steel, which means that aluminum alloy hub with the same volume will be 2/3 lighter than steel hub. Statistics show that the vehicle weight is reduced by 10% and the fuel efficiency can be improved by 6%~8%. Therefore, the promotion of aluminum alloy wheels is of great significance for energy saving, emission reduction and low-carbon life.
Comparison of advantages and disadvantages between aluminum alloy wheel hub and iron wheel hub
1, iron hub is cheap and flexible.
It takes three or four hundred to change an iron wheel hub, and six or seven hundred to one or two thousand to change an aluminum wheel hub. The price difference between the two is very big. The iron hub has good flexibility, and the deformation of a single place can be repaired. For example, when the wheel hub is in contact with the tire on the road, it can be repaired by plastic surgery, and it can be used for a while. Of course, if there is slow air leakage, it needs to be replaced. Its disadvantages are heavy weight, easy deformation and unsightly.
2. Aluminum alloy has good accelerating braking performance.
When the wheel hub is light, its own inertia force becomes smaller and the stored mechanical energy becomes less, so the kinetic energy that the brake needs to overcome becomes less and the braking performance is improved.
3. Aluminum alloy has low fuel consumption.
The fuel consumption of aluminum alloy wheels will also be reduced because they are lighter. Just like we run with 2 kg shoes and 1 kg shoes, the strength we use is definitely different.