Abstract
Work rolls in the hot strip mill withstand extreme service conditions, especially when electrical steels are rolled, resulting in severe roll wear and fatigue. High-speed steel (HSS) work rolls and rolling lubrication are applied to the mill to improve roll wear and fatigue. Tests show that HSS work rolls manifest good performance in wear, fatigue and oxidation resistance during electrical steel hot rolling. The wear loss of HSS work rolls decreases remarkably, but the heat dispersion deteriorates. The service period of HSS work rolls can be increased significantly, but the fatigue failure risk increases as well. In addition, rolling lubrication is proven to be effective in alleviating roll wear and fatigue, but high temperature reduces the positive effects of rolling lubrication. Roll wear and fatigue are considered to be parallel and mutual effective processes. The applications of HSS rolls together with rolling lubrication contribute the most to the improvement of work roll wear and fatigue during electrical steel hot rolling.
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The authors would like to acknowledge the financial support provided by the Shandong Jiaotong University Doctorial Scientific Research Fund and “Climbing” Research Innovation Team Program.
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Dong, Q., Zhang, J. & Liu, H. The Effects of High-Speed Steel Roll and Lubrication on Work Roll Wear and Fatigue During Electrical Steel Strip Hot Rolling. J Fail. Anal. and Preven. 20, 432–437 (2020). https://doi.org/10.1007/s11668-020-00837-6
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DOI: https://doi.org/10.1007/s11668-020-00837-6