Transactions of Materials and Heat Treatment

Title：Shape preset model of CVC cold rolling mill based on simplex search method

Authors： Liu Guangming Huang Xiaoyang Ma Lifeng Zhou Cunlong Huang Qingxue Liu Aimin

Unit： Taiyuan University of Science and Technology Ji′nan Iron and Steel Group Co. Ltd.

KeyWords： CVC cold rolling mill shape control preset simplex search method

ClassificationCode：TG335.5+6

year,vol(issue):pagenumber：2016,41(6):10-15

Abstract：

For the issue of strip defects appearing at the end of the roll service period by two stands reversible four-high CVC (Continuous Variable Crown) cold rolling mill, strip profile control properties before and after roll wear were analyzed comparatively by the influence function method. Then, based on a comprehensive consideration of roll temperature, roll wear, roll elastic deformation and strip tension distribution, regarded the weighted sum of square of quadratic and quartic deviations of strip shape as the objective function, a new preset model of shape control was developed by the two-dimensional simplex search method combining with shape control strategy of rolling mill. The results show that the wearing on the work roll is slight and has little effect on strip profile, while at the later stage of wearing on backup roll, the change of quadratic buckle is small but with a remarkable quarter buckle strip defect. The results of practical application indicate that the shape quality and shape control stability are improved remarkably, and the shape defects are reduced at the later stage of the backup roll service period by the established shape preset model. Theoretical reference is provided for the improvement on strip shape quality of this mill.

Funds：

国家自然科学基金资助项目(51404159，51504157)；山西省青年科技研究基金资助项目(2013021019-1)；山西省国际科技合作项目(2015081011)；太原科技大学研究生创新项目(20134005)

作者简介：刘光明(1982-)，男，博士，副教授 E-mail：brightliu2008@126.com

Reference：

［1］张清东，陈先霖，徐乐江，等.CVC四辊冷轧机板形预设定控制研究[J].钢铁，1997，32(10)：29-32.Zhang Q D, Chen X L, Xu L J, et al. Flatness preset control model for CVC 4-HI cold rolling mill [J]. Iron and Steel, 1997, 32(10): 29-32.

［2］白金兰，金婉秋，张睿，等.冷轧机板形控制系统弯辊力预设定模型开发[J].机械设计与制造，2010，(4)：108-110.Bai J L, Jin W Q, Zhang R, et al. Development of bending force preset model in shape control system of cold rolling mill [J]. Machinery Design & Manufacture, 2010,(4): 108-110.

［3］龚殿尧，徐建忠，张进，等.UCM可逆式轧机板形设定模型的建立[J].轧钢，2011，28(6)：1-3.Gong D Y, Xu J Z, Zhang J, et al. Shape preset mathematic model establishment of UCM reversing mill [J]. Steel Rolling, 2011, 28(6):1-3.

［4］徐秋实，王洪旭.HC轧机板形控制参数预设定的研究[J].鞍钢技术，1998，（10）：28-30.Xu Q S, Wang X H. Study on profile control parameter predetermine of HC rolling mill [J]. Angang Technology, 1998, （10）: 28-30.

［5］彭艳，刘宏民，胡建平，等.冷轧带材板形分析及预设定控制软件（FAPCSR）及其应用[J].钢铁，2003，38(2)：34-37.Peng Y, Liu H M, Hu J P, et al. Software for flatness analysis and presetting control of cold strip rolling (FAPCSR) and application [J]. Iron and Steel, 2003, 38(2): 34-37.

［6］严洪凯，杜素周，张清东.CVC工作辊磨损和热凸度对轧机板形控制特性的影响[J].冶金设备，2000，（3）：1-4.Yan H K, Du S Z, Zhang Q D. Influence of wear and hot crown of CVC work roll on the behaviors of strip shape control [J]. Metallurgical Equipment, 2000, （3）: 1-4.

［7］James J Robinson. Effect of back-up roll wear on operation and strip shape of a CVC cold mill[J].Iron and Steel Engineer, 1996, 6:15-19.

［8］刘光明，邸洪双，郝亮.四辊CVC冷轧机辊间压力影响因素分析[J].中国冶金，2010，20(2)：11-14.Liu G M, Di H S, Hao L. Analyses on contact pressure between rolls of 4-high CVC cold rolling mill [J]. China Metallurgy, 2010, 20(2): 11-14.

［9］张清东，陈先霖.CVC四辊冷轧机板形控制策略[J].北京科技大学学报，1996，18(4)：347-351.Zhang Q D, Chen X L. Flatness control strategy for CVC 4-hi cold rolling mill [J]. Journal of University of Science and Technology Beijing, 1996, 18(4):347-351.

［10］Abdelkhalek S, Montmitonnet P, Legrand N,et al. Coupled approach for flatness prediction in cold rolling of thin strip[J]. International Journal of Mechanical Science, 2011, 53:661-675.

［11］张清东，李博，郑武，等.冷带轧机板形闭环反馈控制策略及模型研究[J].系统仿真学报，2009，21(24)：7858-7861.Zhang Q D, Li B, Zheng W, et al. Study on closed-loop control strategy of flatness on cold strip rolling mill [J]. Journal of System Simulation, 2009, 21(24): 7858-7861.

［12］Hur Y G, Choi Y K. A shape decision and control scheme for the stainless steel at skin pass mill [J].Journal of Iron and Steel Institute of Japan International, 2009, 49(6):859-867.

［13］刘建，王益群，姜万录，等.引入单纯形算子的粒子群优化算法在板形模式识别中的应用[J].中国机械工程，2007，18(23)：2877-2880.Liu J, Wang Y Q, Jiang W L, et al. Application of particle swarm optimization using simplex method in flatness pattern recognition [J]. China Mechanical Engineering, 2007, 18(23): 2877-2880.

［14］于辉，郭振宇，杜凤山.四辊轧机工作辊热辊型的研究[J].上海金属，2005，27(1)：26-30.Yu H, Guo Z Y, Du F S. Study on the thermal profile of work rolls for four high mills [J]. Shanghai Metals, 2005, 27(1): 26-30.

［15］付华高，李长生，刘相华，等.冷轧轧辊磨损数学模型研究[J].钢铁研究，2003，(4)：26-29.Fu H G, Li C S, Liu X H, et al. Research on a mathematic model of roll wear in cold strip rolling [J]. Research on Iron & Steel, 2003,(4): 26-29.

Service：

【This site has not yet opened Download Service】【Add Favorite】