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  • ISSN：0577-6686
机械工程学报

机械工程学报 ›› 2017, Vol. 53 ›› Issue (2): 61-66.doi: 10.3901/JME.2017.02.061

• 材料科学与工程 • 上一篇    下一篇

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一个轧制单元内实时辊系综合凸度预测及应用*

陈胜利1, 2, 何安瑞1, 徐致让3, 邵健1, 刘洋1   

  1. 1. 北京科技大学高效轧制国家工程研究中心 北京 100083;
    2. 马鞍山钢铁(集团)技术中心 马鞍山 243000;
    3. 安徽工业大学机械工程学院 马鞍山 243000
  • 出版日期:2017-01-20 发布日期:2017-01-20
  • 作者简介:

    陈胜利，男，1968年出生，博士研究生，教授级高级工程师。主要研究方向为板带轧制工艺和板形控制。

    E-mail：cshengl@sohu.com

    何安瑞(通信作者)，男，1972年出生，博士，教授，博士研究生导师。主要研究方向为大型工业机械力学行为仿真及控制、板带轧制质量控制及自动化。

    E-mail：harui@ustb.edu.cn

  • 基金资助:
    * 中央高校基本科研业务费专项资金资助项目(FRF-TP-11-003A); 20160402收到初稿，20160718收到修改稿;

Real-time Rolls Integrated Crown Prediction and Application within a Rolling Unit

CHEN Shengli1, 2, HE Anrui2, XU Zhirang3, SHAO Jian1, LIU Yang1   

  1. 1. National Engineering Research Center for Advanced Rolling，University of Science and Technology Beijing， Beijing 100083;
    2. Technology Center， Maanshan Iron and Steel Co.， Ltd.， Maanshan 243000;
    3. School of Mechanical Engineering， Anhui University of Technology， Maanshan 243000
  • Online:2017-01-20 Published:2017-01-20

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摘要：

用有限元法在精确计算机械板凸度并在验证其计算结果有效性基础上，通过解析板形刚度理论，解析凸度遗传方程中的遗传系数，建立计算带钢的板凸度方程。利用现场实际生产工艺参数依次计算各架轧机出口带钢凸度并和末机架后凸度仪测量的板凸度值比较，预测热连轧机辊系综合凸度在一个轧制单元内的变化规律。预测结果通过对现场各机架大量的工作辊辊型测量数据经计算后得到验证，在一定工况条件下，预测的辊系综合凸度整体变化趋势和实际辊系凸度变化保持一致。这种预测方法避免了热连轧过程中为精确控制板凸度而计算各单个机架轧辊实时热、磨凸度变化所带来的复杂性，完成了一个轧制单元内实时辊系综合凸度预测值在各单个机架轧机上的凸度分配及应用。应用效果表明，现场带钢板凸度目标值在 ±10 μm 内的命中率由91%提高到97%，产品实物质量得到明显改善。所建模型与预测结果对板形理论研究和现场操作实践具有实际参考价值。

关键词: 板形, 机械板凸度, 有限元, 轧制, 辊系综合凸度

Abstract: Using FEM, based on accurate calculation of mechanical strip crown and calculated results validation, genetic coefficient of the crown genetic equation is analyzed through analytical theory of plate shape stiffness and the strip crown equation is established. Then, the change rule of hot rolling mill real-time rolls integrated crown is predicted within a rolling unit through using the actual production process parameters in turn to calculate the strip crown of each stand mill and comparing strip crown between crown instrument measured data and calculated value. Prediction results are verified after calculation by a large number of work roll profile measured data in the field, and the overall variation trend of rolls integrated crown is consistent with the actual rolls crown under a certain condition. The prediction value of the real-time rolls integrated crown is distributed and applied to each stand mill to avoid complex computer of real-time hot crown and wear crown of single stand mill in hot strip rolling for precise control strip crown. Application results show that the hit rate of the strip crown target value within ±10 μm is improved from 92% to 97% and product quality has been significantly improved. The building model and predicted results offer actual reference value for strip shape theoretical investigation and operation practice in rolling site.

Key words: finite element method, mechanical strip crown, rolling, strip shape, rolls integrated crown

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