宽带钢热连轧机工作辊不均匀磨损计算模型  

Work roll uneven wear prediction model in broad-strip hot rolling mill

作　　者：郑旭涛[1] 张杰[1] 李洪波[1] 程方武[2] 胡伟东[2] 石磊[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5期49-53,74,共6页Iron and Steel

摘　　要：某2 250 mm热连轧机工作辊普遍存在严重的不均匀磨损现象,以往基于压力不均匀分布函数或磨损不均匀函数的工作辊磨损计算模型无法准确计算轧辊磨损形状,严重影响了带钢横向断面的轮廓质量。根据辊形与断面形状的相似性以及工作辊局部的不均匀磨损对板廓局部高点的遗传作用,提出且实现了基于带钢板廓特征的工作辊不均匀磨损计算模型,并采用Matlab遗传算法优化工具箱计算了模型参数。通过现场实测数据验证了该模型能够实现对工作辊不均匀磨损的准确计算,这对宽带钢板廓形状缺陷的控制具有重要意义。The wear contours of work rolls are observed generally and irregular uneven wear in a 2 250 mm hot strip mill cannot be precisely predicted by the models based on the pre-established pressure distribution function or uneven wear function. The concentrated uneven wear has strong heritability on the local thickening of strip cross-section contour,which is the negative factor and bad for profile control. Based on the heritability between uneven wear and local thickening,a new model is proposed and implemented. The model parameters are determined by Matlab genetic optimization toolbox. The model is validated experimentally in the plant.

关 键 词：热连轧机 板形控制 高速钢轧辊 不均匀磨损 板廓形状 局部高点 

分 类 号：TG333[金属学及工艺—金属压力加工]