Abstract:As previously described in Ch. 2, extrusion is done by placing a piece of metal of good formability, called a billet, in a hardened steel container. In direct extrusion, a ram is then pushed from the ...As previously described in Ch. 2, extrusion is done by placing a piece of metal of good formability, called a billet, in a hardened steel container. In direct extrusion, a ram is then pushed from the back end of the container, so the billet is forced against a die placed at the other end of the container. The die has a hole in its middle, and as the billet is pushed forward, the front part of it starts to flow into the hole, and then out into the space at the exit side of the hole. Here it appears as a continuous extrusion with cross section approximately that of the hole. The longitudinal shape obtained in this process is generally called an extruded profile, or an extrudate. This metal forming technique is hence used to manufacture products with constant cross-sectional shape along their length, either as massive or hollow profiles, or as rod, tube, wire, or strip.Read More
Publication Year: 2010
Publication Date: 2010-03-31
Language: en
Type: book-chapter
Indexed In: ['crossref']
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Cited By Count: 1
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