2007-02-19 20:43:39 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
An extruder is a machine or apparatus that helps in extrusion of a material through a die or opening. Metals, plastics and even dough (food) is extruded into various cross sections. Vermicelli and pasta are extruded. Manyplastics are extruded. Metals of course require much higher temperature and pressure to be extruded into sections, angles, pipes, tubes, rods etc.
2007-02-19 20:58:51 · answer #1 · answered by Swamy 7 · 0⤊ 0⤋
Extrusion is a manufacturing process used to create long objects of a fixed cross-sectional profile. A material, often in the form of a billet, is pushed and/or drawn through a die of the desired profile shape. Hollow sections are usually extruded by placing a pin or piercing mandrel inside of the die, and in some cases positive pressure is applied to the internal cavities through the pin. Extrusion may be continuous (producing indefinitely long material) or semi-continuous (producing many short pieces). Some materials are hot drawn whilst others may be cold drawn.
2007-02-19 20:53:46 · answer #2 · answered by paul13051956 3 · 0⤊ 0⤋
It is amchinery which has screw and barrel and is used in food and plastic industrial.
for more info visit:
http://extrudion.com
2007-02-19 21:02:55 · answer #3 · answered by Armin 3 · 0⤊ 0⤋