热连轧机刚度差及其对板廓非对称的影响  

Effect of stiffness difference and its influence on strip contour asymmetry of hot strip mill

作　　者：郑旭涛[1] 张杰[1] 李洪波[1] 马珩皞[2] 张鹏武[2] 胡海[2] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]武汉钢铁股份有限公司热轧总厂,湖北武汉430083

出　　处：《钢铁》2015年第2期90-95,共6页Iron and Steel

摘　　要：针对某2 250 mm宽带钢轧机出现的带钢断面板廓非对称性问题,提出综合1次楔形与3次楔形的不对称度概念来描述和评价板廓的非对称性。其次,采用压靠法获得轧机的弹跳曲线,并利用基于影响函数法的非对称辊系变形模型,计算分析轧机刚度差对带钢板廓非对称性的影响。在生产中,通过轧机设备关键零部件维修和定量预设定轧辊倾辊量达到对因轧机刚度差而引起的板廓非对称性进行控制和消除,从而保证宽带钢板廓的对称性和轧制稳定性。Characters of strip contour on 2 250 mm production line were collected. The concept about contour asymmetrical character was proposed in a way that asymmetry was expressed by using the degree of asymmetry,which was integrated with linear term and cubic term wedge. This concept can be the base of evaluation and control of strip contour asymmetry. By measuring and analyzing the mill stretch curves under the contact roll condition,it is found that the stiffness differences between operation sides and work sides are obvious and can not be ignored. Roll deformation model of asymmetric rolling mill has been built by using the method of influence function. Through asymmetric rolling model and mathematic model,this paper analyzed the effects on contour asymmetry which was caused by stiffness differences. The strategies including the maintaining of key components and the preset adjustment of roll incline have been applied in industrial production and gained satisfying effort.

关 键 词：热连轧机 非对称 刚度 辊系变形模型 轧辊倾斜 

分 类 号：TG333[金属学及工艺—金属压力加工]