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Browsing by Subject "hypoeutectic silumins"

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    Item type:Article, Access status: Open Access ,
    The application of a computer technique to assess the impact of chemical composition on dispersed shrinkage microporosity of hypoeutectic cast silumins
    (2014) Czekaj, Edward; Pysz, Stanisław
    This article presents the possibility of decreasing dispersed shrinkage microporosity in castings of hypoeutectic alloying silumins, as a result of narrowing - within the standards or industrial specifications - the content of particular elements of the chemical composition: alloying additions and/or impurities. This relatively-simple and, at the same time, inexpensive method can often lead to a quick solution of this type of defects in castings and the improvement of their tightness. In order to orientate the chemical composition towards an optimal content, computer-aided statistical processing was conducted (using Statistica Ver. 9 software) with the application of figures directly related to shrinkage microporosity as well as indirectly related to the temperature range of crystallisation (ΔT = Tlik - Tsol). This data came from literature and MAGMASoft software for simulations of pouring and solidification processes in castings. The achieved results were verified under industrial conditions.