Horizontal vibration of hot rolling mill and its relationship with rolling parameters
SUN Jian-liang1, LIU Hong-min1, LI Yan-yun2, PENG Yan1
1. National Engineering Research Center for Equipment and Technology of C.S.R., Yanshan University,Qinhuangdao 066004, Hebei, China 2. China Railway Shanhaiguan Bridge Group Co., Ltd., Qinhuangdao 066205,Hebei, China
Abstract:The horizontal vibration mechanism of hot tandem rolling mill was studied, and the relationship between the horizontal vibration and the rolling process parameters was obtained. Considering the gap between the bearing chock and the housing, the offset of work roll and backup roll, and the nonlinear damping, the nonlinear dynamic model of horizontal vibration of strip rolling mill was established, and the relationship model of horizontal vibration and rolling process parameters was also established. Then, the online horizontal vibration test was carried out on the F2 rolling mill of some steel plant. The test result shows that the horizontal vibration of the work roll is very strong, with an amplitude up to 4.5 g in the middle and later periods and more than 5 g at the end phase, and the main vibration frequencies are 40 Hz and 118 Hz. At the same time, based on the model established, the vibration simulation in the rolling process was made to investigate the effect of strip thickness, rolling speed and tensile stress on horizontal vibration. The simulation results show that: the acceleration amplitude of horizontal vibration is 4.8 g in the simulation, which agrees with the measured results, thus validating the model established. When the strip thickness is thinner, the influence on the horizontal vibration is larger; the influence of rolling speed on the horizontal vibration is strong, and the influence of tension on the horizontal vibration is small compared to other factors.
孙建亮, 刘宏民, 李琰赟, 彭 艳. 热连轧机水平振动及其与轧制参数影响关系[J]. 钢铁, 2015, 50(1): 43-49.
SUN Jian-liang, LIU Hong-min, LI Yan-yun, PENG Yan. Horizontal vibration of hot rolling mill and its relationship with rolling parameters. Iron and Steel, 2015, 50(1): 43-49.
Yarita I, Furukawa K, Seino Y.An Analysis of Chattering in Cold Rolling for Ultrathin Gauge Steel Strip[J].Trans. Iron and Steel Inst.of Japan, 1978, 18(1):1-10
[1]
Yarita I, Furukawa K, Seino Y.An Analysis of Chattering in Cold Rolling for Ultrathin Gauge Steel Strip[J].Trans. Iron and Steel Inst.of Japan, 1978, 18(1):1-10
[2]
Chefneux L, Fisehbaeh J, Gouzou J.Study and Industrial Control of Chatter in Cold Rolling[J].Iron and Steel Engineer, 1984, 61(11):17-26
[2]
Chefneux L, Fisehbaeh J, Gouzou J.Study and Industrial Control of Chatter in Cold Rolling[J].Iron and Steel Engineer, 1984, 61(11):17-26
[3]
Yun I S, Wilson W R D, Ehmann K F.Chater in the strip rolling process,Part 1: Dynamic model of rolling[J].Transactions of the ASME: Journal of Manufacturing Science and Engineering, 1998, 120(2):330-336
[3]
Yun I S, Wilson W R D, Ehmann K F.Chater in the strip rolling process,Part 1: Dynamic model of rolling[J].Transactions of the ASME: Journal of Manufacturing Science and Engineering, 1998, 120(2):330-336
[4]
Hu PH, Ehmann K F.A dynamic model of the rolling processPartⅠ: Homogeneous Model[J].Int. J. Mach. Tools Manuf., 2000, 40(1):1-19
[4]
Hu PH, Ehmann K F.A dynamic model of the rolling processPartⅠ: Homogeneous Model[J].Int. J. Mach. Tools Manuf., 2000, 40(1):1-19
[5]
LIN Yunjeng.Characterization of dynamic instability in metal sheet rolling[D]. College Station: Texas A&M university, 2002: 20-128.
[5]
LIN Yunjeng.Characterization of dynamic instability in metal sheet rolling[D]. College Station: Texas A&M university, 2002: 20-128.
[6]
Youngdeuk KIM, Hyunchul PARK, Seoung Soo LEE, et al.Development of a mathematical model for the prediction of vibration in a cold rolling mill including the driving system[J].ISIJ international, 2012, 52(6):1135-1144
[6]
Youngdeuk KIM, Hyunchul PARK, Seoung Soo LEE, et al.Development of a mathematical model for the prediction of vibration in a cold rolling mill including the driving system[J].ISIJ international, 2012, 52(6):1135-1144
[7]
TANG Huaping, DING Rui, WU Yunxin, et al.Investigation for parametric vibration of rolling mill[J].Trans. Nonferrous Met. Soc. China, 2002, 12(3):485-488
[7]
TANG Huaping, DING Rui, WU Yunxin, et al.Investigation for parametric vibration of rolling mill[J].Trans. Nonferrous Met. Soc. China, 2002, 12(3):485-488
ZHONG Jue, YAN Hongzhi, DUAN Jian.Industrial experiments and findings on temper rolling chatter[J].Journal of Meterials Processing Technology, 2002, 120(1):316-617
[10]
ZHONG Jue, YAN Hongzhi, DUAN Jian.Industrial experiments and findings on temper rolling chatter[J].Journal of Meterials Processing Technology, 2002, 120(1):316-617