Answer: As the walking support components of automobiles, the production process of car wheels has undergone multiple innovations, and is currently mainly divided into three categories: iron wheels, cast wheels, and forged wheels.
Iron wheel hub is the earliest production process, with simple manufacturing and low cost, but it has a bulky appearance, poor heat dissipation performance, and is prone to rusting, and has gradually been eliminated by the market.
Casting wheel hubs is a product of productivity advancement, mainly including gravity casting, low-pressure casting, and spin casting. Gravity casting has low cost, but the density and strength of the finished product are relatively low; Low pressure casting can produce complex shapes with high density and strength, especially in the production of aluminum alloy wheels. The spinning process optimizes and extends the structure through precise control of pressure and temperature, as well as the rotation and compression of the wheel rim, ensuring the strength and lightweight of the wheel hub.
Forged wheel hubs use a thousand ton forging press to apply pressure to metal blanks, causing them to undergo plastic deformation, thereby obtaining high-performance wheel hubs. Forged wheel hubs are mainly divided into single piece and multi piece types, which have higher strength and lighter weight, but also relatively higher costs.