Analysis of the thermal-force roll profile control ability under different hole structures and slot structures in the RPECT


Roll profile electromagnetic control technology (RPECT) is a control technology for strip flatness based on the flexible control of roll profiles. As the core component, electromagnetic sticks can bulge with induction heating of induction coils. To ensure the integrity of the coil circuit, the surfaces of the electromagnetic sticks need to be provided with slots. Moreover, the inner hole of the electromagnetic control roll is also needed to install the electromagnetic stick in the roll. The structures of the inner hole and slots affect the local structure of the electromagnetic stick and the electromagnetic control roll and then change the roll profile control ability. To research the radial bulging ability, the roundness of bulging, and the composition between the thermal crown and force crown under different holes or slots, a finite element model of circumferential RPECT is established by using the finite element software Marc. After analysis, the results showed that the radial bulging ability and the roundness under the influence of the roll radius were larger than those under the influences of the slot radius and slot amount, and the composition characteristics of the comprehensive roll profile were different under different conditions. Therefore, to achieve accurate roll profile control, the influences of the structures of holes and slots need to be included in the RPECT index.

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This work was supported by the National Natural Science Foundation of China (Grant No. U1560206 and Grant No. 51374184) for the support to this research.

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The analysis of roundness, temperature field, stress field, and roll profile control ability were done by Tingsong Yang; FE model establishment and FE model validation were carried out by Jiayang Liu and Haonan Zhou; experimental platform was built by Jiayang Liu and Zhiqiang Xu with the support of Fengshan Du; Tingsong Yang revised the paper. All authors have read and agreed to the published.

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Correspondence to Fengshan Du.

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• The effects of different hole structures on the roll profile control ability are studied.

• The effect of slots on roundness and roll profile control ability in the RPECT is analysed.

• The configuration method of holes and slots in the RPECT is proposed.

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Yang, T., Liu, J., Zhou, H. et al. Analysis of the thermal-force roll profile control ability under different hole structures and slot structures in the RPECT. Int J Adv Manuf Technol 116, 403–415 (2021).

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  • Roll profile electromagnetic control technology
  • Hole structure
  • Slot structure
  • Thermal-force roll profile control ability
  • Electromagnetic stick