The effect quenching and tempering by different regimes on Rockwell hardness and wear processes of grinding balls 50 and 70 mm in diameter made of two melts of chromium-molybdenum cast iron is studied. The heating temperature for quenching is 850, 950, and 1050°C; the tempering temperature is 250, 400, and 600°C. Iron is analyzed in an electron microscope. Diffraction patterns are obtained. A model of cast iron wear is suggested and compared to the Davis model and to experimental results. An optimum heat treatment regime is proposed.
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The authors thank the head of the laboratory of the Algerian Foundries of Tiaret ALFET/Algeria for valuable help in completing the work.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 34 – 38, May, 2017.
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Aissat, S., Sadeddine, A., Bradai, M.A. et al. Effect of Heat Treatment on the Hardness and Wear of Grinding Balls. Met Sci Heat Treat 59, 297–301 (2017). https://doi.org/10.1007/s11041-017-0146-5
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DOI: https://doi.org/10.1007/s11041-017-0146-5