Oil film thickness model of roll surface and its influencing factors during double cold rolling
QIAN Cheng1,2, ZHANG Jia-sheng2, BAI Zhen-hua2,3, CUI Ya-ya4, HUA Chang-chun1, CHEN Shu-zong1
1. School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China; 2. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao 066004, Hebei, China; 3. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China; 4. College of Mechanical and Equipment Engineering, Hebei University of Engineering, Handan 056038, Hebei, China
Abstract:In order to solve the problem that the oil film thickness of roll surface cannot be measured online,based on the description of the formation and evolution mechanism of the oil film thickness on the surface of the roll during the double cold rolling process,the oil film thickness model of the roll surface was established using the principle of fluid dynamics. The effects of five factors,such as rolling speed,roll roughness,maximum contact stress between rolls,emulsion initial dynamic viscosity and emulsion pressure viscosity coefficient on the roll surface oil film thickness were quantitatively analyzed. The model was applied to the unit of 1 220 double cold rolling mill. The error between the calculated roll surface oil film thickness and the measured oil film thickness on the surface of the roll by the weighing method is less than 10%,and the calculation accuracy of the model meets the field requirements.
钱承, 张佳胜, 白振华, 崔亚亚, 华长春, 陈树宗. 二次冷轧轧辊表面油膜厚度模型及其影响因素[J]. 钢铁, 2020, 55(6): 68-74.
QIAN Cheng, ZHANG Jia-sheng, BAI Zhen-hua, CUI Ya-ya, HUA Chang-chun, CHEN Shu-zong. Oil film thickness model of roll surface and its influencing factors during double cold rolling. Iron and Steel, 2020, 55(6): 68-74.
[1] 计江,胡洪,尤磊,等. 超薄镀锡原板平整及二次冷轧工艺装备的研发应用[J]. 轧钢,2018,35(1):49. (JI Jiang,HU Hong,YOU Lei,et al. Development and application of skin pass and double cold-reduced mill processing for high quality ultra-thin uncoated tin-plated sheet[J]. Steel Rolling,2018,35(1):49.) [2] 李秀军. 二次冷轧技术应用研究[J]. 宝钢技术,2006(s1):61.(LI Xiu-jun. Research on application of double cold reduction technology[J]. Baosteel Technology,2006(s1):61.) [3] 白振华,崔亚亚,李秀军,等. 二次冷轧机组乳化液管路直接混合润滑系统开发[J]. 钢铁,2020,55(1):56. (BAI Zhen-hua,CUI Ya-ya,LI Xiu-jun,et al. Development of emulsion pipeline direct mixed lubrication system in double cold reduction mill[J]. Iron and Steel,2020,55(1):56.) [4] 方圆,莫志英,孙超凡,等. 二次冷轧压下率对镀锡板组织和性能的影响[J]. 钢铁,2019,54(2):48. (FANG Yuan,MO Zhi-ying,SUN Chao-fan,et al. Effect of secondary cold rolling reduction rate on microstructure and properties of tinplate[J]. Iron and Steel,2019,54(2):48.) [5] 齐海峰,张晓峰,唐伟,等. 极薄板高速轧制热划伤缺陷控制技术[J]. 中国冶金,2020,30(1):79. (QI Hai-feng,ZHANG Xiao-feng,TANG Wei,et al. Control technology of hot scratch defect in extremely thin plate high speed rolling[J]. China Metallurgy,2020,30(1):79.) [6] 唐伟,杜凤山,文杰,等. 镀锡板翘曲控制策略研究与应用[J]. 钢铁,2019,54(12):55. (TANG Wei,DU Feng-shan,WEN Jie,et al. Research and application of warping control strategy on tinplate[J]. Iron and Steel,2019,54(12):55.) [7] 胡建军,文杰,于孟,等. DR9镀锡板板形控制技术研究与应用[J]. 中国冶金,2018,28(6):37.(HU Jian-jun,WEN Jie,YU Meng,et al. Research and application of flatness control on DR9 tinplate[J]. China Metallurgy,2018,28(6):37.) [8] 崔亚亚,李柏阳,白振华,等. 二次冷轧机组乳化液流量与浓度综合优化设定[J]. 钢铁,2018,53(2):40.(CUI Ya-ya,LI Bo-yang,BAI Zhen-hua,et al. Comprehensive optimization setting of emulsion flowrate and concentration for double cold reduction mill[J]. Iron and Steel,2018,53(2):40.) [9] 李秀军,崔亚亚,白振华. 二次冷轧机组乳化液体积分数在线控制技术[J]. 钢铁,2019,54(9):79.(LI Xiu-jun,CUI Ya-ya,BAI Zhen-hua. Online control technology of emulsion volume percent in double cold reduction mill[J]. Iron and Steel,2019,54(9):79.) [10] Wilson W R D,Murch L E A. Refined model for the hydrodynamic lubrication of strip rolling[J]. Journal of Tribology,1976,98(3):426. [11] 孙建林,康永林,刘杰. 带钢冷轧润滑形膜的特征[J]. 钢铁研究学报,2001,13(1):10.(SUN Jian-lin,KANG Yong-lin,LIU Jie. Characteris of oil film formation on cold rolled strips[J]. Journal of Iron and Steel Research,2001,13(1):10.) [12] 陈金山,李长生. 冷轧过程热滑伤缺陷预报与控制软件[J]. 东北大学学报:自然科学版,2014,35(4):524.(CHEN Jin-shan,LI Chang-sheng. Forecasting and controlling software of thermal scratch defect in cold rolling process[J]. Journal of Northeastern University:Natural Science,2014,35(4):524.) [13] 付括,臧勇,郜志英. 轧制界面非稳态油膜润滑特性[J]. 东北大学学报:自然科学版,2014,35(9):1324.(FU Kuo,ZANG Yong,GAO Zhi-ying. Unsteady lubrication film characteristics at rolling interface[J]. Journal of Northeastern University:Natural Science,2014,35(9):1324.) [14] 陈建华,张其生,李冰,等. 中厚板轧机油膜厚度模型的研究[J]. 钢铁,2001,36(11):42.(CHEN Jian-hua,ZHANG Qi-sheng,LI Bing,et al. Research on mathemtical model of oil film gage on plate rolling mill[J]. Iron and Steel,2001,36(11):42.) [15] 王桥医,李志华. 金属塑性加工过程界面油膜特性研究[J]. 中国机械工程,2009,20(15):1866.(WANG Qiao-yi,LI Zhi-hua. Research on characteristics of oil film for work interface in metal rolling processes[J]. China Mechanical Engineering,2009,20(15):1866.) [16] 崔亚亚,白振华,李小峰,等. 二次冷轧过程变形区油膜厚度模型[J]. 中国机械工程,2019,30(5):560.(CUI Ya-ya,BAI Zhen-hua,LI Xiao-feng,et al. Oil film thickness model in deformation zones during double cold reduction rolling[J]. China Mechanical Engineering,2019,30(5):560.) [17] 李秀军,崔亚亚,白振华. 二次冷轧直喷系统轧前带钢表面析出油膜厚度模型及其影响因素研究[J]. 塑性工程学报,2018,25(4):285.(LI Xiu-jun,CUI Ya-ya,BAI Zhen-hua. Model of plate-out oil film thickness on strip surface of direct application system in double cold rolling and its influence factors[J]. Journal of Plasticity Engineering,2018,25(4):285.) [18] 孙建林. 轧制工艺润滑原理、技术与应用[M]. 北京:冶金工业出版社,2010.(SUN Jian-lin. Lubrication Theory,Technology and Application of Rolling Process[M]. Beijing:Metallurgical Industry Press,2010.) [19] 温诗铸,黄平,田煜,等. 摩擦学原理[M]. 北京:清华大学出版社,2018.(WEN Shi-zhu,HUANG Ping,TIAN Yu,et al. Tribological Principles[M]. Beijing:Tsinghua University Press,2018.)