Process Extrusion
Produces profiles with open or hollow cross sections. A relatively inexpensive way of getting fairly complex cross section geometry. Extruded profiles can be further processed with bending and pressing.

In extrusion the material is forced to flow through a die opening to produce a desired cross sectional shape. The process reminds of squeesing toothpaste out of a toothpaste tube.

If the material is heated befores processing it is referred to as hot extrusion, otherwise cold extrusion.
Danish Name Ekstrudering
Category Mass conserving processes, Metal forming
Materials Aluminium, Copper, Magnesium, Zinc, Tin
Typical products Paper puncher
Bicycle frame
Mast for sailing boat
Dolphin bicycle trailer
Car bumber
Curtain rail
Window blinds
Window frame panel
References The European Aluminium Association
Hydro Aluminium Tønder
Photo Thomas Nissen (Computer graphics)
Copyright © 1996-2019 Torben Lenau
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