Extrusion is defined as the process of shaping material, such as aluminum, by forcing it to flow through a shaped opening in a die. Extruded material emerges as an elongated piece with the same profile as the die opening.
To aid in understanding the aluminum extrusion process think about a Play-Doh® Fun Factory and how it works. Think of the Fun Factory as the extrusion press, the handle as the ram, the shape bar as the die, and the Play-Doh® as the aluminum billet. The first step is to choose the desired shape and color. Think of the shape as the die and the color as the temper and alloy needed. Next, the Play-Doh® is inserted into the holding chamber and pressure is applied to the …