二次冷轧过程变形区油膜厚度模型
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摘要
为了定量预报二次冷轧过程轧制变形区油膜厚度,结合二次冷轧机组乳化液直喷系统的设备与工艺特点,分析了带钢表面析出油膜、工作辊表面附着油膜的形成机理,建立了一套二次冷轧过程轧制变形区带钢上下表面油膜厚度模型,定量分析了乳化液流量密度、乳化液浓度、乳化液析出距离、轧机入口轧制速度、轧制咬入角、带钢入口变形抗力、后张力、轧制油初始动力黏度、轧制油压力黏度系数对轧制变形区带钢上下表面油膜厚度的影响,并将该模型应用到某1220二次冷轧机组的生产实践,编制出了相应的模型计算软件,实现了二次冷轧过程变形区油膜厚度的预报,为二次冷轧过程润滑性能的控制奠定了理论基础。
In order to quantitatively predict the oil film thicknesses in deformation zones during double cold reduction rolling, combined with the equipment and technological characteristics of the emulsion direct application systems in double cold reduction mill were analyzed, based on the foundation of the mechanism of the plate-out oil film on strip surfaces and adhesion oil film on work-roll surfaces, a model of oil film thicknesses was established on top and bottom strip surfaces in deformation zones during double cold reduction rolling. And the influences of emulsion flow density, emulsion concentration, emulsion plate-out distance, entry rolling velocity, rolling bite angle, entrance deformation resistance, back tension stress, initial rolling oil dynamic viscosity, rolling oil viscosity pressure coefficient on the oil film thicknesses were quantitatively analyzed on top and bottom strip surfaces in deformation zones. This model was applied to the productions of a 1220 double cold reduction mill with the corresponding model calculation software was compiled. And the prediction of oil film thicknesses in deformation zones during double cold reduction rolling was achieved, which laid theoretical foundation for the control of lubricity during double cold reduction rolling.
In order to quantitatively predict the oil film thicknesses in deformation zones during double cold reduction rolling, combined with the equipment and technological characteristics of the emulsion direct application systems in double cold reduction mill were analyzed, based on the foundation of the mechanism of the plate-out oil film on strip surfaces and adhesion oil film on work-roll surfaces, a model of oil film thicknesses was established on top and bottom strip surfaces in deformation zones during double cold reduction rolling. And the influences of emulsion flow density, emulsion concentration, emulsion plate-out distance, entry rolling velocity, rolling bite angle, entrance deformation resistance, back tension stress, initial rolling oil dynamic viscosity, rolling oil viscosity pressure coefficient on the oil film thicknesses were quantitatively analyzed on top and bottom strip surfaces in deformation zones. This model was applied to the productions of a 1220 double cold reduction mill with the corresponding model calculation software was compiled. And the prediction of oil film thicknesses in deformation zones during double cold reduction rolling was achieved, which laid theoretical foundation for the control of lubricity during double cold reduction rolling.
引文
[1] WILSON W R D, MURCH L E. A Refined Model for the Hydrodynamic Lubrication of Strip Rolling[J]. Journal of Tribology, 1976, 98(3): 426-431.
[2] DOW T A, KANNEL J W, BUPARA S S. A Hydrodynamic Lubrication Theory for Strip Rolling Including Thermal Effects[J]. Institución Príncipe de Viana, 1975, 97(1):4-13.
[3] AZUSHIMA A, INAGAKI S. Measurement and Analysis of Inlet Oil Film Thickness in Cold Sheet Rolling with Oil-in-water Emulsion[J]. Tribology Transactions, 2009, 52(4): 427-434.
[4] AZUSHIMA A, INAGAKI S, OHTA H. Plating Out Oil Film Thickness on Roll and Workpiece during Cold Rolling with O/W Emulsion[J]. Tribology Transactions, 2011, 54(2): 275-281.
[5] FUJITA N, KIMURA Y, KOBAYASHI K, et al. Estimation Model of Plate-out Oil Film in High-speed Tandem Cold Rolling[J]. Journal of Materials Processing Tech., 2015, 219: 295-302.
[6] 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): 10-13. SUN Jianlin, KANG Yonglin, LIU Jie. Characteristics of Oil Film Formation on Cold Rolled Strips[J]. Journal of Iron and Steel Research, 2001,13(1): 10-13.
[7] 白振华,王松尧,崔亚亚,等. 乳化液流量与速度关系曲线优化设定技术[J]. 钢铁,2017,52(7): 58-63. BAI Zhenhua, WANG Songyao, CUI Yaya, et al. Study on Optimization Technology of Relationship Graph between Flow Rate of Emulsion and Rolling Speed in Cold Rolling Process[J]. Iron and Steel, 2017,52(7): 58-63.
[8] 白振华,侯彬,宋和川,等. 冷连轧过程乳化液流量综合优化设定技术[J]. 钢铁, 2017, 52 (3) : 58-63. BAI Zhenhua, HOU Bin, SONG Hechuan, et al. Research on Comprehensive Optimization Setting Technology of Emulsion Flow in Cold Rolling Process[J]. Iron and Steel, 2017 , 52(3) : 58-63.
[9] 李长生,李有元,余涛,等. 四辊可逆冷轧机轧制润滑工艺实验研究[J]. 东北大学学报(自然科学版),2010,31(8): 1117-1120.LI Changsheng, LI Youyuan, YU Tao, et al. Experimental Research on Rolling-lubricating Process on 4-High Reversing Cold Rolling Mill[J]. Journal of Northeastern University (Natural Science), 2010,31(8): 1117-1120.
[10] 魏立群,戴志方,肖壮,等. 高速冷连轧机组的振动与对策研究[J]. 机械工程学报,2016,52(11):88-94.WEI Liqun, DAI Zhifang, XIAO Zhuang, et al. Research of Vibration and Strategy in High Speed Cold-rolling Mill [J]. Journal of Mechanical Engi-neering,2016,52(11):88-94.
[11] 陈金山, 李长生, 曹勇. 轧辊粗糙度对不锈钢板带表面和工艺参数的影响[J]. 机械工程学报, 2013, 49(4):30-36.CHEN Jinshan,LI Changsheng, CAO Yong. Effects of Roll Roughness on Surface and Process Parameters for Stainless-steel Strip[J]. Journal of Mechanical Engineering, 2013, 49(4):30-36.
[12] 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): 1324-1327.FU Kuo, ZANG Yong, GAO Zhiying. Unsteady Lubrication Film Characteristics at Rolling Interface[J]. Journal of Northeastern University (Natural Science), 2014,35(9): 1324-1327.
[13] 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): 1866-1869.WANG Qiaoyi, LI Zhihua. Research on Characteristics of Oil Film for Work Interface in Metal Rolling Processes [J]. China Mechanical Engineering, 2009,20(15): 1866-1869.
[14] 王桥医, 谭建平. 轧制界面非稳态润滑过程系统动力学模型的建立及其数值模拟[J]. 中国机械工程, 2005, 16(9):831-834.WANG Qiaoyi, TAN Jianping. System Dynamics Research and Numerical Simulation on Unsteady Lubrication Based on the Interface of Rolling[J]. China Mechanical Engineering,2005, 16(9):831-834.
[15] LEGRAND N, MASSON P, AMRANE L, et al. Cold Double Reduction Rolling for Packaging Steels: towards a Better Lubrication Control by Emulsion[J]. Revue de Métallurgie, 2007, 104(1):43-50.
[16] NAKANISHI H, SAIKI K, HIRAYAMA T. Variation of Oil Introduction Behaviour during Oil-in-water Emulsion Rolling[J]. Materials Transactions, 2013, 54(8):1408-1415.
[17] 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 Jianlin. Lubrication Theory, Technology and Application of Rolling Process [M]. Beijing: Metallurgical Industry Press, 2010.
[2] DOW T A, KANNEL J W, BUPARA S S. A Hydrodynamic Lubrication Theory for Strip Rolling Including Thermal Effects[J]. Institución Príncipe de Viana, 1975, 97(1):4-13.
[3] AZUSHIMA A, INAGAKI S. Measurement and Analysis of Inlet Oil Film Thickness in Cold Sheet Rolling with Oil-in-water Emulsion[J]. Tribology Transactions, 2009, 52(4): 427-434.
[4] AZUSHIMA A, INAGAKI S, OHTA H. Plating Out Oil Film Thickness on Roll and Workpiece during Cold Rolling with O/W Emulsion[J]. Tribology Transactions, 2011, 54(2): 275-281.
[5] FUJITA N, KIMURA Y, KOBAYASHI K, et al. Estimation Model of Plate-out Oil Film in High-speed Tandem Cold Rolling[J]. Journal of Materials Processing Tech., 2015, 219: 295-302.
[6] 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): 10-13. SUN Jianlin, KANG Yonglin, LIU Jie. Characteristics of Oil Film Formation on Cold Rolled Strips[J]. Journal of Iron and Steel Research, 2001,13(1): 10-13.
[7] 白振华,王松尧,崔亚亚,等. 乳化液流量与速度关系曲线优化设定技术[J]. 钢铁,2017,52(7): 58-63. BAI Zhenhua, WANG Songyao, CUI Yaya, et al. Study on Optimization Technology of Relationship Graph between Flow Rate of Emulsion and Rolling Speed in Cold Rolling Process[J]. Iron and Steel, 2017,52(7): 58-63.
[8] 白振华,侯彬,宋和川,等. 冷连轧过程乳化液流量综合优化设定技术[J]. 钢铁, 2017, 52 (3) : 58-63. BAI Zhenhua, HOU Bin, SONG Hechuan, et al. Research on Comprehensive Optimization Setting Technology of Emulsion Flow in Cold Rolling Process[J]. Iron and Steel, 2017 , 52(3) : 58-63.
[9] 李长生,李有元,余涛,等. 四辊可逆冷轧机轧制润滑工艺实验研究[J]. 东北大学学报(自然科学版),2010,31(8): 1117-1120.LI Changsheng, LI Youyuan, YU Tao, et al. Experimental Research on Rolling-lubricating Process on 4-High Reversing Cold Rolling Mill[J]. Journal of Northeastern University (Natural Science), 2010,31(8): 1117-1120.
[10] 魏立群,戴志方,肖壮,等. 高速冷连轧机组的振动与对策研究[J]. 机械工程学报,2016,52(11):88-94.WEI Liqun, DAI Zhifang, XIAO Zhuang, et al. Research of Vibration and Strategy in High Speed Cold-rolling Mill [J]. Journal of Mechanical Engi-neering,2016,52(11):88-94.
[11] 陈金山, 李长生, 曹勇. 轧辊粗糙度对不锈钢板带表面和工艺参数的影响[J]. 机械工程学报, 2013, 49(4):30-36.CHEN Jinshan,LI Changsheng, CAO Yong. Effects of Roll Roughness on Surface and Process Parameters for Stainless-steel Strip[J]. Journal of Mechanical Engineering, 2013, 49(4):30-36.
[12] 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): 1324-1327.FU Kuo, ZANG Yong, GAO Zhiying. Unsteady Lubrication Film Characteristics at Rolling Interface[J]. Journal of Northeastern University (Natural Science), 2014,35(9): 1324-1327.
[13] 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): 1866-1869.WANG Qiaoyi, LI Zhihua. Research on Characteristics of Oil Film for Work Interface in Metal Rolling Processes [J]. China Mechanical Engineering, 2009,20(15): 1866-1869.
[14] 王桥医, 谭建平. 轧制界面非稳态润滑过程系统动力学模型的建立及其数值模拟[J]. 中国机械工程, 2005, 16(9):831-834.WANG Qiaoyi, TAN Jianping. System Dynamics Research and Numerical Simulation on Unsteady Lubrication Based on the Interface of Rolling[J]. China Mechanical Engineering,2005, 16(9):831-834.
[15] LEGRAND N, MASSON P, AMRANE L, et al. Cold Double Reduction Rolling for Packaging Steels: towards a Better Lubrication Control by Emulsion[J]. Revue de Métallurgie, 2007, 104(1):43-50.
[16] NAKANISHI H, SAIKI K, HIRAYAMA T. Variation of Oil Introduction Behaviour during Oil-in-water Emulsion Rolling[J]. Materials Transactions, 2013, 54(8):1408-1415.
[17] 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 Jianlin. Lubrication Theory, Technology and Application of Rolling Process [M]. Beijing: Metallurgical Industry Press, 2010.