Casting and forging are both metal processing techniques, with the following main differences:
Material flow properties: Casting is the process of forming shapes through the flow of liquid metal, while forging is the process of forming shapes through plastic deformation of solid metal.
Processing method: Casting is formed by molds, while forging is achieved by applying force through hammering or a press to deform.
Surface quality: The surface roughness of the castings is relatively high and requires subsequent processing; The surface quality of forged parts is good, which can reduce the subsequent processing workload.
Production efficiency: Casting is suitable for large-scale production with high efficiency; Forging is suitable for small batch production and has relatively low efficiency.
Material utilization rate: There will be some material loss during the casting process, while forging can better utilize materials.
Finished product quality: The molecular structure of the forged wheel hub is more compact and can withstand higher pressure, resulting in lighter weight and higher strength. Casting wheels, on the other hand, are relatively heavy.
Price: The price of forged wheels is relatively high because their process is more complex and requires multiple processes and processing.