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| Hydraulic-mechanical coupling system dynamics modeling and vibration characteristics of hot strip tandem mill |
| LING Qi-hui1，ZHAO Qian-cheng1，WANG Xian1，YAN Xiao-qiang2，ZHANG Qing-dong2 |
（1. College of Mechanical and Electric Engineering， Hunan University of Science and Technology，Xiangtan 411201， Hunan， China
2. College of Mechanical and Engineering， University of Science and Technology Beijing， Beijing 100083， China） |
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Abstract The field test signal analysis indicated the existence of the hot strip tandem mill hydraulic-mechanical coupling vibration phenomenon，which provided experimental basis for the further research of hydraulic-mechanical coupling vibration system. Taking a hydraulic-mechanical coupling system of industrial field hot strip tandem mill as the research object，the dynamic simulation model of hot strip tandem mill hydraulic-mechanical coupling system was set up. The numerical simulation shows that the time of vibration strength of the hot strip tandem mill depended with the operation time of hydraulic automatic thickness control system，and revealed the action mechanism and the influence law of the given signal of mill servo valve，hydraulic automatic thickness control system and compensation control system of hot strip tandem mill on the hydraulic-mechanical coupling vibration system，which provided theoretical guidance for further research of the mill roll coupling vibration and vibration control.
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Received: 28 June 2016
Published: 01 March 2017
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2017, Vol. 52 
