Abstract
Skin-pass rolling (or temper rolling) is the final operational step in the production chain of hot-rolled strips, and its main role is to apply a small deformation to the hot-rolled strips cooled to room temperature to improve the shape quality and mechanical properties. Because of the absence of rolling lubricants between the work roll and strip as well as the existence of obvious oxide layer on the strip surface, the wear of work roll is very serious, which exerts an adverse effect on the shape control precision of hot-rolled strips. In this study, the wear law of work roll is obtained by a theoretical analysis of roll wear mechanisms as well as an elastic-plastic finite element analysis of skin-pass rolling. Using the above-mentioned wear law, a work roll wear model is constructed with parameters optimized by the three-population particle swarm optimization and differential evolution algorithm. The newly established wear model is validated experimentally in the field. Calculated values coincide well with those obtained from experiment. The wear model can be used for guiding the actual production.
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Funding
This study received financial support from the National Natural Science Foundation of China (Grant No. 51604024), the Fundamental Research Funds for the Central Universities (Grant No. FRF-TP-17-002A2), the Beijing Natural Science Foundation (Grant No. 3182026), and the Tribology Science Fund of State Key Laboratory of Tribology (Grant No. SKLTKF16B11).
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Song, G., Wang, X. & Yang, Q. Study on mathematical model of work roll wear in skin-pass rolling of hot steel strip. Int J Adv Manuf Technol 97, 2675–2686 (2018). https://doi.org/10.1007/s00170-018-2076-9
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DOI: https://doi.org/10.1007/s00170-018-2076-9