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Influence of edge thermal spraying on the temperature field and thermal crown of work roll during cold rolling of aluminum alloy strip

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Abstract

As a mature shape-controlling technology, the segmented cooling of the work roll can directly change the thermal expansion of the work roll, and that affects the thickness and elongation distribution along the width direction of the strip. However, it cannot improve shape defects at the two edges of a strip. In this paper, edge thermal spraying is applied to solve the shape defects at the two edges of a strip because it can change the temperature field and thermal expansion locally at the two edges of the work roll, which is contrary to cooling. Through establishing and solving the thermodynamic coupling finite element model of the work roll, it was found that edge thermal spraying can raise the temperature and thermal expansion at the edges of the work roll and hardly influence the temperature inside the work roll. The relationship between the local increment of thermal expansion and the temperature difference between cooling water and heating water was fitted to a linear model. Then, this model was applied in a real rolling process, and it was found that the effect of edge thermal spraying on flatness defects at the edges of the work roll was significant.

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Funding

This work is supported by the Fundamental Research Funds for the Central Universities of China [Grant No. FRF-GF-20-24B and FRF-MP-19-014] and Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) [No. 311021013]

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Authors and Affiliations

  1. National Center for Materials Service Safety, University of Science and Technology Beijing, No. 30 Xueyuan Road, Haidian District, Beijing, 100083, China

    Xiuliang Wang, Weidong Zhang & Yibo Ai

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  1. Xiuliang Wang
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  2. Weidong Zhang
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  3. Yibo Ai
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Contributions

Xiuliang Wang established and solved the model and completed this draft; Weidong Zhang offered part of literature and the computer for simulation and then organized the industrial experiment; Yibo Ai collected data in the industrial experiment.

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Correspondence to Weidong Zhang.

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Wang, X., Zhang, W. & Ai, Y. Influence of edge thermal spraying on the temperature field and thermal crown of work roll during cold rolling of aluminum alloy strip. Int J Adv Manuf Technol 127, 4331–4338 (2023). https://doi.org/10.1007/s00170-023-11830-2

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  • DOI: https://doi.org/10.1007/s00170-023-11830-2

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