Browsing by Subject "nodular cast iron"

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Access status: Open Access ,
Analysis of cooling curves of nodular cast iron
(AGH University of Science and Technology Press, 2018) Bartošová, Marianna; Pribulová, Alena; Futáš, Peter; Eperješi, Štefan
The solidification of cast iron is a complex process with characterized entrance and marginal conditions. Thermal analysis is one of the processes that allows us to observe the solidification of alloys. There is a possibility of gaining information about the melted cast iron quality and predicting the final properties of the cast by evaluating the scanned cooling curves by solidification (stable and metastable system). This article deals with the study and analysis of cooling curves taken from production conditions of a foundry during ductile cast iron production. The aim is to discover the reproduction and reliability of the thermal analysis results of cast iron. The study of the progress of the cooling curves and their first derivation to follow the reactions of the curves to changing factors in the production process.
Access status: Open Access ,
Graphite particle size distribution in nodular cast iron
(2005) Wiencek, Kurt; Skowronek, Tadeusz; Khatemi, Belkheir
A system of non-overlapping random spheres, whose diameters have the Weibull distribution may be used as a model for the graphite in nodule cast iron. For a given material the model probability density function of the Weibull distribution may be determined (as the first approximation) by fitting the PDF of model profile diameters to the one of graphite particle sections. The Weibull distribution may be used as the basis for quantitative metallography of the graphite phase in nodular cast iron.