What is Extrusion?
Extrusion is a process in which a metal or plastic material, such as Aluminium, can be forced (extruded) through a die (metal shaped piece) to produce a product.
How does the cost of dies and tooling for aluminium extrusions compare with the costs of other processes and materials?
The cost of dies for aluminium extrusion is normally much lower than the cost for other processes. This involves processes like die casting, forming, stamping or vinyl extrusion. Prices for aluminium extrusions can vary, depending on the die and tooling of the extrusion. However, the duration for aluminium extrusion is typically half of the duration of vinyl extrusions. This means that aluminium extrusions are less expensive due to a shorter duration that is needed to complete the extrusion.
How does the strength-to-weight ratio for aluminium extrusions compare with the ratio for other materials?
Even though Aluminium possess a lightweight property, its high-level resilience at low to mid-range temperatures means it is resistant to breaking under tension. Materials like rolled formed steel and copper extrusions are widely used, but aluminium is best known for a density which is one-third of steel. Therefore, engineers usually use aluminium for extrusions. There are many processes involved with extrusions, such as Cutting, Finishing, Packaging, Fabrication and Thermal Breaking. During these processes, many metals or plastic materials can become brittle; not aluminium though. This is what makes aluminium extrusions reliable and durable.
What sort of tolerances can be achieved with aluminium extrusions?
Aluminium Extrusions usually provide tighter tolerances than other materials, such as vinyl extrusions. The main tolerances that are widely used in this process are the diameter of the die and the functioning size. Due to the varying temperatures Aluminium can withstand, tolerances such as flatness, cross sections and surface roughness can also be achieved.