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    Wyświetlanie 1-3 z 3
    Tytuł:
    Integrated Analytical and Measurement System for the Evaluation of the Properties of Cast Metals and Alloys
    Autorzy:
    Biernat, S.
    Bydałek, A. W.
    Powiązania:
    https://bibliotekanauki.pl/articles/380877.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    solidification process
    brass
    hardness
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    krzepnięcie
    mosiądz
    twardość
    Opis:
    The article presents an integrated analytical and measurement system for evaluation of the properties of cast metals and alloys. The presented platform is an extension of the SLAG - PROP application with new modules, which allow to use information on metallurgical processes in an even more effective way, as well as to evaluate the finished product. In addition, the construction of a measuring station for the analysis of thermal processes taking place in a metal bath allows for precise observation of phenomena together with their appropriate interpretation. The article presents not only the cooling curves of certain copper alloys. The analysis also covered mechanical properties related to hardness, finished products depending on the mold in which the products were cast. In the literature one can find information about the mechanical properties of products in the improved state, usually after plastic or thermal treatment, omitting their properties obtained as a result of a naturally made casting. The article also presents the method of placing information in the database using a convenient graphical tool.
    Źródło:
    Archives of Foundry Engineering; 2019, 1; 13-18
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Verification of the Cast Iron Solidification Model
    Autorzy:
    Mendakiewicz, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/2174627.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    application of information technology
    solidification process
    numerical techniques
    thermal analysis
    derivative analysis
    przemysł odlewniczy
    zastosowanie technologii informatycznych
    krzepnięcie
    techniki numeryczne
    analiza termiczna
    Opis:
    The article concerns the experimental verification of the numerical model simulating the solidification and cooling processes proceeding in the domain of cast iron casting. The approximate course of the function describing the evolution of latent heat and the value of substitute specific heat resulting from its course were obtained using the thermal and derivative analysis (TDA) method The TDA was also used to measure the cooling curves at the distinguished points of the casting. The results obtained in this way were compared with the calculated cooling curves at the same points. At the stage of numerical computations, the explicit scheme of the finite difference method was applied. The agreement between the measured and calculated cooling curves is fully satisfactory.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 3; 91--94
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Shrinkage Porosity Criterion and Its Application to A 5.5 Ton Steel Ingot
    Autorzy:
    Zhang, C.
    Bao, Y.
    Wang, M.
    Zhang, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/382021.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    quality management
    shrinkage porosity
    ingot solidification
    application of information technology
    numerical simulation
    przemysł odlewniczy
    zarządzanie jakością
    porowatość
    krzepnięcie
    zastosowanie technologii informatycznych
    symulacja numeryczna
    Opis:
    In order to predict the distribution of shrinkage porosity in steel ingot efficiently and accurately, a criterion R√L and a method to obtain its threshold value were proposed. The criterion R√L was derived based on the solidification characteristics of steel ingot and pressure gradient in the mushy zone, in which the physical properties, the thermal parameters, the structure of the mushy zone and the secondary dendrite arm spacing were all taken into consideration. The threshold value of the criterion R√L was obtained with combination of numerical simulation of ingot solidification and total solidification shrinkage rate. Prediction of the shrinkage porosity in a 5.5 ton ingot of 2Cr13 steel with criterion R√L>0.21 m･℃1/2･s-3/2 agreed well with the results of experimental sectioning. Based on this criterion, optimization of the ingot was carried out by decreasing the height-to-diameter ratio and increasing the taper, which successfully eliminated the centreline porosity and further proved the applicability of this criterion.
    Źródło:
    Archives of Foundry Engineering; 2016, 16, 2; 27-32
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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