宽厚板厚度控制模型的优化

The Optimization of the Thickness Control Model in Heavy Plate

宽厚板厚度控制的目的是轧制出板形良好、板凸度小、同板差和异板差尽可能小的产品。莱钢宽厚板生产线自投入生产以来,在板凸度、厚度的均匀性、同板差和异板差等宽厚板厚度控制的瓶颈问题上都难以达到要求。为了实现对轧制厚度的要求,我们在现有的厚度控制模型的基础上,深入理解其控制功能、补偿功能的作用,找到引起厚度难以控制的主要因素,采取轧辊刚度补偿、轧辊偏心补偿、支撑辊油膜厚度补偿、工作辊热膨胀补偿及冲击力补偿等措施来优化厚度控制模型。自优化相应厚度参数和增加相关补偿控制功能以来,宽厚板厚度控制的精度得到很大的提高,具有很高的推广价值。

The purpose of plate thickness control is to roll out the products with good shape,small convexity,and intra-plate deviation and individual plate deviation as small as possible.It is difficult to meet the requirements in the plate crown,thickness uniformity and intra-plate deviation and individual plate deviation since Laiwu heavy plate producing line was put into production.In order to realize the requirements of the rolling thickness,based on the existing thickness control model,it further understanding of the control model＇s control function and compensation function is maked,to find the main factors,it makes the thickness control hard.Therefore,some measures to optimize the thickness control,such as the roll stiffness compensation,roll eccentricity compensation,backup roll oil thickness compensation and work roll thermal expansion compensation and the impact force compensation,etc.The high precision of wide heavy plate control has wide spread value.