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This paper is devoted to the presentation of initial results focused on the optimization of numerical simulations of gravity casting of ductile iron castings into non-permanent bentonite molds. Numerical simulations were performed focused on the course of filling the mold and solidification of the casting by simulation SW ProCAST. The proportions of pearlite and ferrite phases, graphite nodularity and hardness were obtained. The input parameters were set to fit the simultaneously realized experimental operating melts. Macroscopic defects, metallographic structure and hardness were verified in selected sections of test castings. The data obtained from metallographic analysis and hardness were used to verify the results of numerical modeling. The comparison of the results shows a good agreement between the real casting and the numerical simulation.
Keywords: Ductile iron, microstructure, numerical simulation, model validation, ProCAST© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.