What is extrusion?


Extrusion is a process used to create objects of a fixed, cross-sectional profile. A material is pushed or drawn through a die of the desired cross-section. The two main advantages of this process over other manufacturing processes are its ability to create very complex cross-sections and work materials that are brittle, because the material only encounters compressive and shear stresses. It also forms finished parts with an excellent surface finish.

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Some articles on extrusion:

Extrusion - Design
... The design of an extrusion profile has a large impact on how readily it can be extruded ... The maximum size for an extrusion is determined by finding the smallest circle that will fit around the cross-section, this is called the inscribing circle ... the shape factor, which is the amount of surface area generated per unit mass of extrusion ...
Equal Channel Angular Extrusion
... metalworking, Equal channel angular extrusion (ECAE) is an extrusion process, developed in the early 1990s in the Soviet Union ... deformation processes like rolling, forging, extrusion, and drawing, strain is introduced by reduction in the cross sectional area ...
The Lepore Extrusion
... The Lepore Extrusion is a 2006 release by Thighpaulsandra ... Extrusion is the score to an interactive video installation by New York-based visual artist Daniel McKernan titled Is Evolution Evil?, which featured one of the world's most ...
China Zhongwang - History and Scale
... Since its founding in 1993, the Group owned 93 leading aluminium extrusion production lines (including 14 production lines with large extrusion presses of 75MN or ... in the industry, as well as the largest customized industrial aluminium extrusion product die design and manufacturing centre in Asia ... smelting and casting, die and extrusion, and the advanced technologies applied is the Group’s important source of competitiveness and outstanding features ...
Plastics Extrusion
... Plastics extrusion is a high volume manufacturing process in which raw plastic material is melted and formed into a continuous profile ... Extrusion produces items such as pipe/tubing, weather stripping, fence, deck railing, window frames, plastic films and sheet, thermoplastic coatings, and wire insulation ...

More definitions of "extrusion":

  • (noun): Squeezing out by applying pressure.
    Example: "An unexpected extrusion of toothpaste from the bottom of the tube"
    Synonyms: expulsion