Aluminum Extrusion Process: How Aluminum Profiles Are Made
The aluminum extrusion process forces a heated aluminum billet through a shaped die to produce a continuous profile with a specific cross-section. The billet is heated until it becomes sufficiently soft and plastic for extrusion, but it remains solid rather than melting into a liquid. After the profile exits the die, manufacturers typically cool, stretch, cut, heat-treat, and finish it according to the required specifications.