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张义方等:基于连轧机垂扭耦合振动致变形区中性角振动研究 ·101 0.10 在振动 0.09 (2)根据轧制理论建立了中性角影响因素模型, 0.08 通过仿真研究获得了入口厚度、压下量、轧辊半径和摩 是0.07 擦系数对中性角振动的影响及规律. 0.06 综上所述,可以通过调整入口厚度、压下率、轧辊 0.05 半径和摩擦系数来提高轧制变形区中性角的稳定性, 0.04 从而降低垂扭耦合振动,为进一步研究抑振措施提供 0.03 依据。 0.02 0.01 02 0.3 0.4 0.5 0.6 参考文献 压下率e 0] Efrain U.Identification and countermeasures to resolve hot strip 图8压下率对中性角影响 mill chatter.AISE Steel Technol,2001,6:48 Fig.8 Influence of reduction rate on neutral angle 2]Belli P,Bittanti S,Marco A D.On the origin of torsional vibrations in hot rolling mills and a possible emedy.ASME,2004,104 (6): 0.080 811 B]Hu P H,Zhao H Y,Ehmann K F.Third-octave-mode chatter in 0.075 rolling.Part 2:Stability of a single-stand mill//Proceedings of the Institution of Mechanical Engineers,Part B:Journal of Engineer- 0.070 ing Manufucture,006,220(8):1279 城 4] 0.065 Wang L P.A dynamically generated fuzzy neural networkand its plication to torsional vibration control of tandem cold rolling mill 0.060 spindles.Eng Appl Artif Intell,2002,15(6):541 Zhong J,Tang H P.Vibration problems of high speed rolling mill- 0.055 0.36 0.380.400.42 study of dynamics of complex electromechanically coupled system. 0.44 轧辊半径.R/m J Vib Meas Diagn,002,22(1):1 (钟倔,唐华平.高速轧机若干振动问题一复杂机电系统耦 图9轧银半径对中性角影响 合动力学研究.振动、测试与诊断,2002,22(1):1) Fig.9 Influence of roll radius on neutral angle Yan X Q.Machinery-electric-hydraulic coupling vibration control of hot continuous rolling mills.J Mech Eng,2011,47(17):61 0.24 (闫晓强.热连轧机机电液耦合振动控制.机械工程学报, 0.22 2011,47(17):61) 0.20 0.18 7]Yan X Q,Shi C,Cao X,et al.Research on Coupled Vertical- 0.16 Tors ion Vibration of M ill-Stand of CSPM ill.J Vib Meas Diagn, 0.14 2008,28(4):377 0.12 (闫晓强,史灿,刘丽娜,等.CP轧机扭振与垂振耦合振动研 0.10 究.振动测试与诊断,2008,28(4):377) 0.08 8] Zou J X.Rolling Machinery.Beijing:Metallurgical Industry 0.06 Press,1998 0.06 0.08 0.100.12 0.14 (邹家样.轧钢机械.北京:治金工业出版社,1998) 摩擦系数,4 Li W G.Tan S B.Li J B.Modelling rolling force and rolling 图10摩擦系数对中性角影响 torque in a hot strip mill.J Northeast Univ Nat Sci,2011,32 Fig.10 Influence of friction coefficient on neutral angle (5):623. (李维刚,潭树彬,李家波.热连轧机轧制力和轧制力矩模型 表1F3轧机参数变化范围 研究.东北大学学报,2011,32(5):623) Table 1 Variation range of parameters for F3 rolling mill [o] Sun Y K.Modeling and Control of Cold and Hot Rolling Mill. R/m H/m Beijing:Metallurgical Industry Press,2010 0.36-0.440.010-0.018 0.2-0.60.06-0.14 (孙一康.冷热轧板带轧机的模型与控制.北京:治金工业 出版社,2010) 01] Hu P H.Ehmann K F.A dynamic model of the rolling process, 4结论 Part 1:Homogeneous model.Int J Mach Tools Manufact,2000 40(1):1 (1)通过对现场连轧机振动时扭矩和轧制力的测 02] Yan X,Tong C N,Meng J J.Mathematical model of roll ing 试信号分析,发现连轧机振动时,轧制变形区中性角也 force in the analysis of cold rol ling chatter.I Vib Meas Diagn,张义方等: 基于连轧机垂扭耦合振动致变形区中性角振动研究 图 8 压下率对中性角影响 Fig. 8 Influence of reduction rate on neutral angle 图 9 轧辊半径对中性角影响 Fig. 9 Influence of roll radius on neutral angle 图 10 摩擦系数对中性角影响 Fig. 10 Influence of friction coefficient on neutral angle 表 1 F3 轧机参数变化范围 Table 1 Variation range of parameters for F3 rolling mill R/m H/m ε μ 0. 36 ~ 0. 44 0. 010 ~ 0. 018 0. 2 ~ 0. 6 0. 06 ~ 0. 14 4 结论 ( 1) 通过对现场连轧机振动时扭矩和轧制力的测 试信号分析,发现连轧机振动时,轧制变形区中性角也 在振动. ( 2) 根据轧制理论建立了中性角影响因素模型, 通过仿真研究获得了入口厚度、压下量、轧辊半径和摩 擦系数对中性角振动的影响及规律. 综上所述,可以通过调整入口厚度、压下率、轧辊 半径和摩擦系数来提高轧制变形区中性角的稳定性, 从而降低垂扭耦合振动,为进一步研究抑振措施提供 依据. 参 考 文 献 [1] Efrain U. Identification and countermeasures to resolve hot strip mill chatter. AISE Steel Technol,2001,6: 48 [2] Belli P,Bittanti S,Marco A D. On the origin of torsional vibrations in hot rolling mills and a possible emedy. ASME,2004,104( 6) : 811 [3] Hu P H,Zhao H Y,Ehmann K F. Third-octave-mode chatter in rolling. Part 2: Stability of a single-stand mill / /Proceedings of the Institution of Mechanical Engineers,Part B: Journal of Engineer￾ing Manufacture,2006,220( 8) : 1279 [4] Wang L P. A dynamically generated fuzzy neural networkand its plication to torsional vibration control of tandem cold rolling mill spindles. Eng Appl Artif Intell,2002,15( 6) : 541 [5] Zhong J,Tang H P. Vibration problems of high speed rolling mill￾study of dynamics of complex electromechanically coupled system. J Vib Meas Diagn,2002,22( 1) : 1 ( 钟倔,唐华平. 高速轧机若干振动问题———复杂机电系统耦 合动力学研究. 振动、测试与诊断,2002,22( 1) : 1) [6] Yan X Q. Machinery-electric-hydraulic coupling vibration control of hot continuous rolling mills. J Mech Eng,2011,47( 17) : 61 ( 闫晓强. 热连轧机机电液耦合振动控制. 机 械 工 程 学 报, 2011,47( 17) : 61) [7] Yan X Q,Shi C,Cao X,et al. Research on Coupled Vertical￾Tors ion Vibration of M ill-Stand of CSPM ill. J Vib Meas Diagn, 2008,28( 4) : 377 ( 闫晓强,史灿,刘丽娜,等. CSP 轧机扭振与垂振耦合振动研 究. 振动测试与诊断,2008,28( 4) : 377) [8] Zou J X. Rolling Machinery. Beijing: Metallurgical Industry Press,1998 ( 邹家祥. 轧钢机械. 北京: 冶金工业出版社,1998) [9] Li W G,Tan S B,Li J B. Modelling rolling force and rolling torque in a hot strip mill. J Northeast Univ Nat Sci,2011,32 ( 5) : 623. ( 李维刚,谭树彬,李家波. 热连轧机轧制力和轧制力矩模型 研究. 东北大学学报,2011,32( 5) : 623) [10] Sun Y K. Modeling and Control of Cold and Hot Rolling Mill. Beijing: Metallurgical Industry Press,2010 ( 孙一康. 冷热轧板带轧机的模型与控制. 北京: 冶金工业 出版社,2010) [11] Hu P H,Ehmann K F. A dynamic model of the rolling process, Part 1: Homogeneous model. Int J Mach Tools Manufact,2000, 40( 1) : 1 [12] Yan X,Tong C N,Meng J J. Mathematical model of roll ing force in the analysis of cold rol ling chatter. J Vib Meas Diagn, ·101·
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