Modelling the influence of the gas to melt ratio on the fraction solid of the surface in spray formed billets

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    Abstract

    In this paper, the relationship between the Gas to Melt Ratio (GMR) and the solid fraction of an evolving billet surface is investigated numerically. The basis for the analysis is a recently developed integrated procedure for modelling the entire spray forming process. This model includes the atomisation stage taking thermal coupling into consideration and the deposition of the droplets at the surface of the billet taking geometrical aspects such as shading into account. The coupling between these two models is accomplished by ensuring that the total droplet size distribution of the spray is the summation of “local” droplet size distributions along the r-axis of the spray cone. The criterion for a successful process has been a predefined process window characterised by a desired solid fraction range at a certain distance from the atomizer. Inside this process window, the gas and melt flows have been varied and their influence on the solid fraction at the surface of the billet has been analysed.
    Original languageEnglish
    JournalSimulation Modelling Practice and Theory
    Volume14
    Issue number8
    Pages (from-to)1087-1099
    ISSN1569-190X
    DOIs
    Publication statusPublished - 2006
    Event45th International Conference of Scandinavian Simulation Society - Copenhagen, Denmark
    Duration: 23 Sep 200424 Sep 2004
    Conference number: 45

    Conference

    Conference45th International Conference of Scandinavian Simulation Society
    Number45
    CountryDenmark
    CityCopenhagen
    Period23/09/200424/09/2004

    Keywords

    • Spray forming
    • Atomisation
    • Deposition
    • Gas to Melt Ratio
    • Process window

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