摘要
针对板带轧制过程轧机出现的垂直振动问题,分析轧机液压与机械系统耦合作用,建立4自由度轧机机-液耦合振动模型。研究前后张应力、压下制度和摩擦因数对轧机振动过程中轧制力的影响,构建轧机振动轧制力增量模型。基于振动系统正负阻尼对轧机振动的稳定性影响,提出用于表征轧机振动发生概率的振动系数指标与轧机稳定判别模型。同时选取现场典型规格产品为例,分析出轧制速度、压下制度、平均张力、乳化液流量、乳化液浓度和乳化液温度等关键工艺参数对振动系数的影响规律,并编制轧机振动系数计算软件,将其应用到某厂五机架冷连轧机组,验证了本文提出的振动判别模型的有效性。
The 4 DOF mechanical hydraulic coupling model based on the analysis of the coupling effect of rolling mill hydraulic and mechanical systems is established. The rolling force increment model is derived by considering the influence of exit and entry tension, reduction, and friction coefficient on rolling force in vibration process. Based on the influence of positive and negative damping on the vibration stability of rolling mill, the vibration coefficient and the discrimination model of rolling mill stability are proposed. Taking typical products as the research object, the effects of rolling speed, reduction, average tension, emulsion flow, emulsion concentration and emulsion temperature on the vibration coefficient are analyzed quantitatively and the calculation software of rolling mill vibration coefficient is compiled, which is applied to five stand tandem cold rolling mill of a factory to verify the effectiveness of the vibration discrimination model.
作者
钱承
孙荣生
张柳柳
白振华
华长春
QIAN Cheng;SUN Rongsheng;ZHANG Liuliu;BAI Zhenhua;HUA Changchun(School of Electrical Engineering,Yanshan University,Qinhuangdao 066004;National Engineering Research Center for Equipment and Technology of Cold Strip Rolling,Yanshan University,Qinhuangdao 066004;Institute of Iron&Steel Research,Anshan Iron&Steel Group,Anshan 114009)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2021年第12期208-216,共9页
Journal of Mechanical Engineering
基金
国家自然科学基金(61803326,618255304,61751309)
中央引导地方科技发展资金(206Z1004G)资助项目。
关键词
机液耦合
垂直振动
轧制力
增量模型
振动系数
mechanical hydraulic coupling
vertical vibration
rolling force
incremental model
vibration coefficient
