The Knowledge Of Forged Wheels
Most aftermarket wheels are made from aluminum by casting or forging.
The casting process involves pouring or injecting molten aluminum into a mold containing a cavity with the desired shape of the wheel. This allows for greater design flexibility and higher production volume compared to a forged wheel. Until recently, most wheels have been gravity cast (heavier and thicker). Today, low pressure casting techniques are used to substantially reduce porosity and mass. Cast wheels are generally designed larger and heavier in order to achieve acceptable load rating for a given application.
Forged wheels are manufactured in multiple steps compared to the one step in the casting process. Forged wheels have greater structural integrity and less mass, and usually cost substantially more than cast wheels due to the multiple processes and complicated machinery involved. While forged wheels are typically reserved for high performance vehicles where the reduction in rotating mass and unsprung weight is desired to increase performance。