Modeling was used to simulate extrusion of tungsten (W) particulate/ glassy metal matrix composite rods from powders and give insights to the can design and process parameters. The configuration consisted of a cylindrical copper (Cu) cup and liner filled with metal powder extruded through a 5:1 reducing die orifice. Fluid-structure interactions were modeled using LSDYNA-ALE code where the copper liner, cup and simulated metal powders were the fluid components and the die and ram were rigid body structures. Simulated fluid-structure interactions indicated that steady-state streamlined plastic flow was not established within the cup and powder region, which agrees with experimental results. Redesigning the extrusion system initial can configuration, die angle and reduction ratio is required to eliminate the inward Cu flow at die-exit that interrupts powder flow to prevent forming of a continuous rod.


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    Title :

    Modeling PM extrusion of rods


    Additional title:

    Modellierung der pulvermetallurgischen Erzeugung von Barren


    Contributors:


    Publication date :

    2008


    Size :

    9 Seiten, 7 Bilder, 1 Tabelle, 10 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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