Počet záznamů: 1

Wall-slip velocity as a quantitative measure of powder-binder separation during powder injection moulding

  1. 1.
    0358187 - UH-J 2011 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
    Hausnerová, B. - Marcaníková, L. - Filip, Petr - Sáha, P.
    Wall-slip velocity as a quantitative measure of powder-binder separation during powder injection moulding.
    World PM2010 Proceedings: volume 4. Shrewsbury: European Powder Metallurgy Association, 2010, s. 557-562. ISBN 978-1-899072-13-2.
    [Powder Metallurgy World Congress & Exhibition – PM2010. Florencie (IT), 10.10.2010-14.10.2010]
    Grant CEP: GA ČR GA103/08/1307
    Výzkumný záměr: CEZ:AV0Z20600510
    Klíčová slova: powder injection moulding * powder-binder separation * wall-slip velocity
    Kód oboru RIV: BK - Mechanika tekutin

    This paper points out the specific features of PIM compounds which should be taken into account in their rheological characterization as a necessary approach to optimize moulding step of the process. A lot of effort has been paid to describe the powder-binder separation during the flow through the mould channels in the quantitative way. Flow curves of the materials undergoing the structural changes during shearing are not a monotonically decreasing, but they exhibit minima/maxima upon increasing shear rate. The multi-parameter rheological model, describing the flow peculiarities of PIM compounds, must be firstly developed and approved on reliable experimental data. It is supposed that wall slip can serve as a quantitative parameter directly connected to the powder-binder separation. As it depends not only on material and processing parameters, but also on the microscopic nature of a channel wall, rheometer with special roughened plates was designed to carry out wall slip measurement.
    Trvalý link: http://hdl.handle.net/11104/0196291
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