单机架UCM轧机冷轧无取向硅钢板形控制优化  

Flatness Control Optimization for Non-oriented Silicon Steel Strip Cold Rolled by a Single Stand of UCM Rolling Mill

作　　者：王晓东[1] 张喜榜[1] 王文广[1] 李华[1] 于孟[1] 

机构地区：[1]首钢技术研究院薄板研究所,北京100043

出　　处：《轧钢》2013年第3期7-11,共5页Steel Rolling

摘　　要：针对首钢单机架UCM轧机轧制无取向硅钢出现高次复合浪形缺陷的问题,采用二维变厚度有限元方法对轧机板形调控性能进行了分析。根据计算结果,制定了相应的轧制道次与板形改善策略。在第1～第2道次,以等比例凸度原则进行轧制,而在第3～第5道次对板形进行控制,并且使目标平直度设定值遵循从小逐渐增大到成品板形的原则。为了兼顾浪形与横断面厚度轮廓协调控制,合理分配道次压下量,充分利用中间辊横移量、工作辊与中间辊弯辊的功能来改善板形。在实际生产中应用该优化策略后,冷轧无取向硅钢的波浪度由原来1%～3%降低到1%以下。To solve the high order complex waves occurred during cold rolling of nonoriented silicon steel strip by means of a single stand of UCM rolling mill in Shougang Group, the shape control performance of this UCM mill was analyzed using two dimension variable thickness finite element method. According to the analy sis results, improving strategy for rolling passes and flatness was put forward. In the first and the second pas ses, thickness reduction was done on the basic of keeping the strip with an equal crown ratio. While, the flat ness control was realized during the third to the fifth passes in which flatness object for each pass was setup from minor to the target according to the rule of increasing smoothly. For considering the coordinated control of flatness and cross thickness profile, reductions of the rolling passes were distributed rationally. At the same time, intermediate roll shifting, work roll and intermediate roll bending were fully utilized for improving the flatness of strip. After the optimized strategy was applied in actual production, significant effect on improving flatness of nonoriented silicon steel strip was obtained. The steepness of the wave defect was decreased from 1% - 3 M to below 1%.

关 键 词：冷轧 单机架UCM轧机 无取向硅钢 平直度 横断面轮廓 

分 类 号：TG334.9[金属学及工艺—金属压力加工]