What is the difference between cast iron hub and aluminum alloy hub?
In the auto forum, many car owners ask about the wheel hub, and they don't know which is better, or the difference between the iron wheel hub and the aluminum wheel hub. This article will explain the difference between iron wheel hub and aluminum alloy wheel hub.
1. Comparison of advantages and disadvantages of materials
In fact, aluminum alloy wheel hub actually contains other metals, such as iron, so it should be called aluminum alloy wheel hub. Compared with ordinary aluminum alloy wheels, iron wheels have good toughness and poor hardness, while aluminum alloy wheels have the opposite, good hardness but poor toughness. Due to the material and process of manufacturing, the iron wheel hub has poor stability at high speed, while the aluminum alloy wheel hub has good stability at high speed, and the aluminum alloy wheel hub is better for acceleration and heat dissipation.
Therefore, we will find that the iron ring does not change in appearance after being trampled by the potholes on the road, but it starts to shake when the speed is close to 100 mph, mainly because it is made by stamping and the weight is uneven, so it will inevitably rotate when the speed is up. The aluminum alloy ring will not have this phenomenon, because the aluminum alloy ring is formed by casting, and it needs to detect the internal empty hole and the external turning of the blank. The profile and weight balance are relatively accurate and average, and the aluminum ring is relatively light and can be made thicker than the iron ring, which also improves the acceleration performance of the car. In addition, the heat dissipation capacity of aluminum ring is better than that of iron fist, which will also add points to the braking performance.
2. Comparison of advantages and disadvantages in actual use
Although the overall performance of aluminum alloy wheel hub is better than that of iron wheel hub, its cost is relatively high after all. It also costs thousands of yuan to replace a set of ordinary aluminum alloy wheels. At the same time, the later maintenance of aluminum alloy wheels is also more troublesome than that of iron wheels. For example, aluminum alloy wheels are easy to be damaged by careless driving, and aluminum alloy wheels are most likely to be damaged by riding roughshod roads, adding isolation belts, isolation piers, etc. In addition, once the aluminum alloy wheel hub is damaged, it can only be replaced, and the original appearance and maintenance cannot be restored.
Iron wheels are equipped with plastic wheel caps. There are many beautiful wheel caps on the market now. If they are matched properly, they can also achieve the same effect as aluminum alloy wheels. The car in the above figure is equipped with a hub cap, which is not inferior to the aluminum alloy wheel hub in appearance, and the modification cost is very low.