The wheel hub is a barrel-shaped metal part with the inner contour of the tire supporting the tire and centered on the shaft. Also called rims, steel rims, wheels, tire bells. There are many types of hubs according to different diameters, widths, molding methods and materials.

      According to the characteristics and needs of different models, the surface treatment process of the hub will also adopt different methods, which can be roughly divided into two types: baking paint and electroplating. The wheels of ordinary models are less considered in appearance, and good heat dissipation is a basic requirement. The process is basically treated with baking paint, that is, spraying and then baking. The cost is more economical and the color is beautiful, and the retention time is long, even if the vehicle is scrapped. The color of the wheel remains unchanged. The surface treatment process of many Volkswagen wheels is painted. Some fashionable and avant-garde, dynamic color wheels also use paint technology. This type of wheel is affordable and complete in specifications.

       Magnesium alloy automobile wheels are lighter, stronger, have better heat dissipation, have greater impact load capacity, and have good corrosion resistance to organics and alkalis. Compared with aluminum alloy car wheels, the weight is reduced by 1/3, which reduces the vehicle load. Its weight-reducing effect is 15 times that of the car body, which reduces energy consumption, saves fuel, and saves fuel by 8%-18%.