Extrusion - Metal is caused to flow through a restricted orifice - Manufacturing Processes - 1

Q.  What is the process, in which the metal is caused to flow through a restricted orifice to create an extremely elongated strip of uniform and comparatively smaller cross-sectional area, called?
- Published on 03 Aug 15

a. Rolling
b. Extrusion
c. Drawing
d. Spinning

ANSWER: Extrusion

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  • Pankaj   -Posted on 29 Oct 15
    - The process, in which the metal is caused to flow through a restricted orifice to create an extremely elongated strip of uniform and comparatively smaller cross-sectional area, called as extrusion.

    - This process is similar to the cold drawing but the difference is that the material is pushed through the hole in extrusion whereas it is pulled through the hole in cold drawing process.

    - Extrusion is generally carried out at high temperature.

    - The metals those can be extruded are as follows:

    1. Aluminum and its alloys

    2. Copper and its alloys

    3. Lead and its alloys

    4. Magnesium and its alloys

    5. Steel; tin and zinc and their alloys

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