冷轧机轧制过程中的轧辊振动研究  

Study on roller vibration of cold rolling mill in rolling process

作　　者：罗平尔[1] 

机构地区：[1]苏州工业职业技术学院精密制造工程系,江苏苏州215104

出　　处：《锻压技术》2016年第12期102-106,共5页Forging & Stamping Technology

基　　金：江苏高校品牌专业建设工程资助项目(PPZY2015 B186)

摘　　要：以冷轧机轧辊垂直振动为研究对象,在分析冷轧机振动机理的前提下,建立轧机垂直振动简化模型,运用数值仿真方法,分析了轧制压下量、摩擦系数及辊缝阻尼的轧制工艺参数对轧机垂直振动的影响。分析结果表明:减小轧机压下量有利于提高轧机振动临界速度;增加辊缝摩擦系数有利于减小轧辊的振动位移;增加辊缝阻尼能够有效降低振动幅值。在此基础上提出了抑制冷轧机垂直振动方法为:优化各道次压下量,以使轧制临界速度由1340 m·min-1提升到1520 m·min-1;适当降低乳化液浓度,以使辊缝摩擦系数增大,此调节过程应考虑窜流现象;增设液压衬板减震器或多孔阻尼减震器,以增加辊缝阻尼。For the vertical vibration of cold rolling mill,a simplified model on vertical vibration of mill was established based on the analysis of cold rolling mill vibration mechanism,and influences of reduction,roll gap friction coefficient and damping on the vertical vibration of rolling mill were analyzed by numerical simulation method. The results show that to decrease the reduction rate can improve the vibration critical speed,to increase the roll gap fiction coefficient can reduce vibration displacement,and to increase roll gap damping can effectively reduce vibration amplitude. Furthermore,methods of suppressing the vertical vibration of the cold rolling mill are proposed as follows based on the above conclusions： the critical rolling speed increases from 1340 m·min^- 1to 1520 m·min^- 1by optimizing each pass reduction; the roll gap friction coefficient increases by reducing the emulsion concentration properly,and channeling phenomena should be considered in the adjustment process; the roll gap damping increases by adding hydraulic liner shock absorber or porous damper shock absorbers.

关 键 词：冷轧机 垂直振动 压下量 摩擦系数 辊缝阻尼 

分 类 号：TG333[金属学及工艺—金属压力加工]