Abstract
Brake blocks for rolling stock are made of phosphorous cast irons or composite materials. In cast iron brake blocks, their structure and mechanical characteristics are influenced by their chemical composition. Through the research and experiments done, there have been established correlations between chemical composition and hardness. The correlations are presented both in analytical and graphical form, as well as their analysis from a mathematical and technological point of view. The regression areas allow the identification of the optimal areas of variation of the analyzed parameters.
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