Advantages and disadvantages of steel hub and alloy hub
The wheel hub is the place where the axle is installed in the center of the wheel, which is also known as "rim" or "steel rim". The hub is easily stained with dirt. If it is not cleaned for a long time, it may be corroded and deformed, resulting in potential safety hazards. Therefore, pay special attention to the maintenance of the wheel hub. Because of different language habits, many people have different names for wheel hubs, such as "rim", "tire bell" or "bell".
The wheel hubs on the market can be divided into steel wheel hubs and alloy wheel hubs according to their materials, and each has its own advantages and disadvantages.
The main advantage of steel wheel hub is that the manufacturing process is simple (generally using the casting process, for example, aluminum alloy wheel hub is generally produced using the low-pressure casting process), the cost is relatively low, and the ability to resist metal fatigue is strong, which is commonly known as cheap and solid. However, the disadvantages of steel wheels are also relatively prominent, that is, their appearance is ugly (it can be said that there is no appearance to speak of), their weight is large (the same wheel steel material is much heavier than aluminum alloy material), their inertial resistance is large, their heat dissipation is poor, and they are very easy to rust.
The alloy wheel hub can just make up for this problem. It is light in weight, low in inertial resistance, high in manufacturing accuracy, small in deformation when rotating at high speed, and low in inertial resistance, which is conducive to improving the straight driving performance of the car, reducing the rolling resistance of the tire, and thus reducing fuel consumption. The thermal conductivity of alloy material is about three times that of steel, with good heat dissipation, which can play a certain role in the heat attenuation of vehicle braking system, tires and braking system. The alloy wheels of original cars on the market are mainly aluminum alloy. Of course, many modified wheels will choose elements such as chromium and titanium as basic materials in order to meet certain special requirements and improve vision. However, compared with steel wheels, alloy wheels are much more expensive. Therefore, steel wheels often appear in low configuration vehicles in many low-end and low-end original vehicles, while alloy wheels are the standard configuration of high configuration vehicles.