A novel approach to improve the computing accuracy of rolling force and forward slip

作者：Bu, He-nan^*; Yan, Zhu-wen; Zhang, Dian-hua

来源：Ironmaking and Steelmaking, 2019, 46(3): 269-276.

DOI：10.1080/03019233.2017.1369681

• Cold strip mill
• model pre-set
• rolling force
• forward slip
• objective function
• evolutionary algorithm

In cold strip rolling control system, rolling force and forward slip are the prerequisites for the model setting calculation, and the deformation resistance and friction coefficient are the main parameters that affect their predictions. A new method based on objective function is first proposed in this paper to improve the calculation accuracy of rolling force and forward slip, and the deformation resistance and friction coefficient are taken as optimisation variables. Using the multi-population co-evolutionary algorithm to solve the objective function, the required rolling force and forward slip are obtained. The pre-set values of rolling force and roller line speed are compared with the actual measured ones in a 1450 mm five-stand tandem cold mill and other researcher's method. Results show that the calculated values are in fair agreements with the on-line measured ones, and the thickness and flatness accuracy of the final product are improved.

• 出版日期2019-3-16
• 单位东北大学; 轧制技术及连轧自动化国家重点实验室