1. There are scratches on the wheel hub surface.
The wear on the wheel hub surface is probably the most common one. After all, the hub was running on the road, and it was accidentally scratched when parking and reversing. Or the road is not good, there are too many pebbles on the road and the speed is too fast. It is normal for pebbles to jump up and scratch the wheel hub surface; If the scratches on the wheel hub surface are not serious, they can be ignored. However, if the surface scratches are deep, it is recommended to repair them in time. As the surface of the wheel hub is coated with protective paint when it leaves the factory, the aluminum alloy material of the wheel hub is protected from oxidation. If the wheel hub surface is seriously scratched, the protective paint will definitely be wiped off, resulting in the combination of oxygen in the air and aluminum of aluminum alloy materials. The surface of the hub is slightly oxidized, the surface is yellow, the surface paint falls off, or severely oxidized, the aluminum alloy material of the hub is damaged, and the hub is scrapped.
2. There are scratches and notches on the edge of the hub.
The causes of scratches and notches on the edge of the hub are almost the same as those on the upper surface of the hub. The same small scratches can be better. If there are cracks or serious scratches, it is recommended to repair them in time. If the hub edge is badly scratched and the surface is not protected by varnish, the hub edge will be corroded. If it is serious, it will cause the wheel hub tire combination to loosen and the wheel hub will leak slowly. Of course, the gap between the hub and the rim will also lead to the loosening of the hub tire combination and the slow leakage of the hub. This way, you can't run a long distance, you can't run a high speed, and there are security risks. 3. Surface corrosion of wheel hub
Many people will say that the surface of the wheel hub will corrode if it is scraped, but how can it corrode if it is not scraped? In fact, the corrosion of the hub is also related to the surface technology of the hub. Generally speaking, hubs electroplated with water are the most susceptible to corrosion. It will still corrode from the inside. If it's not serious, it can't be seen on the surface. Some high-end cars such as GMC, Bentley, Rolls-Royce and Escalade will be equipped with waterwheel wheels. After a long time of use, the corrosion of the hub can be seen from the inside out, and if it is serious, the coating on the surface will peel off. In order to prolong the service life of the hub, it is suggested that once the hub of a large part is corroded by water electroplating, the hub process should be changed in time, because the air will be polluted in the process of water electroplating of the hub, so it is not allowed to do water electroplating of the hub now. It can correct environmental protection electroplating or other wheel hub surface processes.
4. Wheel hub deformation and cracking
Let's talk about hub deformation first: hub deformation is divided into internal deformation, external deformation and hub spoke deformation. (By the way, generally speaking, the hub is stressed on the spokes of the hub. As long as the spokes of the hub are not deformed or broken, the safety of the whole hub will not be affected. The deformation and cracking of the hub edge should be corrected and repaired in time to avoid potential safety hazards (at present, the deformation and repair of the hub are corrected by professional plastic surgeons, and the molecular structure of the hub aluminum alloy is not changed, so the majority of car owners can rest assured to repair it); But if the spokes of the hub are deformed and cracked, don't hesitate to buy the hub again. The deformation of the wheel hub edge is basically caused by the pit crossing, speed bump or too fast speed when the road conditions are bad. Remind drivers and friends to control the speed in time when driving.
Let's take a look at the cracking of the wheel hub: reasons for the cracking of the wheel hub: a. Wheel hub with explosion-proof tire: Because the tire wall of the explosion-proof tire is hard and the buffering force is weak, when the tire is strongly impacted, the force acting on the tire will be directly transmitted to the wheel hub, which is easy to cause cracking; B large-size hub: due to the low flatness of large-size hub, the cushioning force of tire is insufficient. Similarly, when the tire is hit by an external force, the external force will also be transmitted to the hub, leading to cracking. Therefore, we warmly remind drivers and friends to pay attention to potholes, speed bumps or deceleration when driving under bad road conditions.
Therefore, whether the wheel hub is deformed or cracked, it is basically caused by people not slowing down when crossing the pit, so everyone should drive as fast as possible and must slow down when encountering the pit.
Finally, to sum up for everyone: the deformation and cracking of the outer edge of the hub should be repaired in time to avoid affecting its own safety; If the spokes are deformed and cracked, don't hesitate to change them quickly; If the surface of the hub is seriously scratched, it should be repaired and renovated in time to prevent the hub from being scrapped due to corrosion and oxidation. It can not only achieve the aesthetic effect, but also avoid the scrapping of the hub and cause greater cost. Of course, in order to make the hub more fashionable, we can consider changing the color of the hub or electroplating the hub when repairing the hub.
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