What is the manufacturing process of car wheels?

[StCamille]

There are mainly three manufacturing processes for car wheels: 1. Forging: This forging process can be further divided into gravity casting and low-pressure casting. The gravity forging process is very simple, where the liquid alloy is poured into the mold and naturally forms under the action of gravity, resulting in relatively low costs. Low-pressure casting uses low pressure to compress the liquid alloy into the mold. Wheels produced this way have higher metal density, greater strength, more complex shapes, and higher safety factors. This is currently the main method for manufacturing aluminum alloy wheels, with relatively high yield rates and automation levels. 2. Casting: High pressure is used to press a preheated alloy into a rough wheel blank, which is then subjected to secondary processing on the production line. As a result, the shapes are relatively simple, and the surfaces of the wheels mostly feature straightforward, rugged lines. 3. Spinning process technology: This process has certain requirements for pressure and temperature. By utilizing rotational motion and extrusion, the structure of the wheel rim is extended. Wheels produced this way not only meet the required strength standards but also significantly reduce the weight of the wheels.