Selected aspects of casting wear intensity

The article presents the results of research on the significance of the impact of the nitriding process and the content of carbon, silicon, manganese, sulfur, as well as the superheating and pouring temperature of the liquid alloy, and the effects of the interaction of variable parameters on the wear intensity of white cast iron. The research methodology used extreme experiment planning matrices, allowing for the determination of the influence of the mentioned variables by comparing the obtained regression coefficients.Research on the abrasion resistance of white cast iron has so far been mainly focused on the effects of alloying additives. The impact of superheating and mold pouring temperatures, as well as liquid cast iron modification treatments, has often been overlooked in this regard. Few studies have also concerned the analysis of the influence of white cast iron nitriding processes on increasing abrasion resistance, likely due to the ambiguous effects obtained. The complexity of these issues is compounded by the interaction effects of manganese and sulfur, the inversion temperature, or the issue of crystallization nuclei dependent on the thermodynamic state of the liquid cast iron. The simultaneous influence of so many factors makes it difficult to interpret the significance and strength of their impact on subsequent tribological processes [7]. In this situation, it seems reasonable to use extreme experiment planning matrices for research, which allow for a mathematical approach to the problem while minimizing the necessary number of experiments [4]. Experiments with (…)

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