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<p>This paper identifies and validates the existence of a vertical-torsional-deformation zone coupling dynamic closed-loop system in Compact Strip Production (CSP) rolling mills.&#xa0;An online monitoring system is employed to simultaneously monitor the electromagnetic and hydraulic signals, capturing the vertical-torsional coupled vibration signals present in the CSP rolling mill during the rolling of high-strength thin strips. Through the signal characteristic analysis, the dynamic model of the rolling mill was established, incorporating the combined excitation from the electrical drive, hydraulic screw-down, and strip steel. After solving the dynamic model, the parameter coupling relationships between vertical vibration, torsional vibration, and the rolling deformation zone were analyzed, which demonstrated the existence of a vertical-torsional-deformation zone coupling dynamic closed-loop system. It was found that adjusting the amount of lubrication oil in the roll gap within an appropriate range effectively reduced the system’s coupling degree, decreasing the torsional vibration amplitude by 79% and the vertical vibration amplitude by 54%. These findings demonstrate the existence of a vertical-torsional-deformation zone coupling dynamic closed-loop in CSP rolling mill systems and provide valuable references for further research into the coupling vibration mechanism and vibration suppression strategies in rolling mills.</p>

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Research on Vertical-Torsional Coupling Closed-Loop Dynamics Model of Compact Strip Production Rolling Mills

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Yifang Zhang,
  • Yiwei Wan,
  • Huiwei Yan,
  • Cheng He,
  • Li Cui,
  • Xu Ding,
  • Tianyi Chen,
  • Pingye Wan

摘要

This paper identifies and validates the existence of a vertical-torsional-deformation zone coupling dynamic closed-loop system in Compact Strip Production (CSP) rolling mills. An online monitoring system is employed to simultaneously monitor the electromagnetic and hydraulic signals, capturing the vertical-torsional coupled vibration signals present in the CSP rolling mill during the rolling of high-strength thin strips. Through the signal characteristic analysis, the dynamic model of the rolling mill was established, incorporating the combined excitation from the electrical drive, hydraulic screw-down, and strip steel. After solving the dynamic model, the parameter coupling relationships between vertical vibration, torsional vibration, and the rolling deformation zone were analyzed, which demonstrated the existence of a vertical-torsional-deformation zone coupling dynamic closed-loop system. It was found that adjusting the amount of lubrication oil in the roll gap within an appropriate range effectively reduced the system’s coupling degree, decreasing the torsional vibration amplitude by 79% and the vertical vibration amplitude by 54%. These findings demonstrate the existence of a vertical-torsional-deformation zone coupling dynamic closed-loop in CSP rolling mill systems and provide valuable references for further research into the coupling vibration mechanism and vibration suppression strategies in rolling mills.