How are alloy wheels made
A video that clearly shows the manufacturing process of forged and cast alloy wheels.
Forged and cast wheel production: video
Below is a video about the technology used to manufacture forged and cast wheels. The first part (0:00 - 4:00) covers forged wheel production, the second part (4:00 - 6:17) covers cast wheel production. The video is included here purely for illustration; if the manufacturing process itself does not interest you, you can skip it. The quality is not great, but everything is clear enough.
Video on YouTube: https://www.youtube.com/watch?v=WieeirHHj4g