济钢1700 mm热带钢轧机的板形设定控制模型

济钢1700 mm热连轧是新建投产的宽带钢生产线,其F2-F6精轧机组装备有工作辊弯辊和窜辊技术.针对这种典型机型,在大量有限元模拟计算的基础上,开发了相应的板形设定控制模型,包括工作辊综合辊形(初始辊形、磨损辊形和热辊形之和)计算模型、支承辊综合辊形计算模型、窜辊设定计算模型和弯辊力设定计算模型等.在经历了系统设计、程序编写、离线调试、在线调试后,板形设定控制模型投入稳定运行,所有考核规格的凸度控制精度超过96%.在同宽轧制长度超过70 km的轧制单位内,各机架弯辊力设定结果能够自动适应带钢厚度和钢种的变化,且凸度控制精度超过95%.

Shape Setup Control Models on Jigang 1700 mm Hot Strip Mill

1 700 mm hot strip mill at Jigang is a wide strip production line, which was constructed newly and put into production at the beginning of 2006. Work roll bending and shifting device is equipped on its F2 to F6 finishing stands. On the basis of finite element models,shape setup control models were developed, including work roll integrated contour calculation model, backup roll integrated contour calculation model, shifting setup calculation model and bending force setup calculation model, and so on. Integrated contour is the sum of initial, wear and thermal contours, which has its own calculation model respectively. It took about twenty months to finish the system design, programming, off-line and on-line debugging, and then shape setup control models were put into operation. The crown control precision for all strip specifications was over 96%. In a rolling unit of same strip width more than 70km in length,the bending force at all stands could be adapted automatically with strip thickness and steel grade and the crown control precision was over 95%.