Asymmetric shape control theory and practice in cold strip mills

摘要：

In cold rolling process, asymmetric shape defects are still a common problem to strip quality. For the mills with inverse symmetry roll shifting system, different roll wear and thermal contour of top roll system and bottom roll system could cause asymmetric shape defects during shifting operation. In this paper, three dimension finite element simulation models of inverse shifting roll system were established to calculate the parameters and to analyze the effects. Based on the idea in the mill engineering that mill style option depended on the product grade, shifting weakness was evaluated and the opinion of limit shifting was suggested. To improve control effect to asymmetric shape defects in cold rolling, shape control system with asymmetric shape control ability is developed, including asymmetric edge drop control at upstream stands and asymmetric flatness control at last stand. The further improvement of asymmetric shape control theory and practice is the key way to reach the higher precision of shape quality in cold strip mills.

关键词： Cold strip mill Shifting mill Inverse symmetry roll system Asymmetric shape defect Separate bending Limited shifting Asymmetric shape control system

作者: Xiaochen Wang Zhiguo Liang Quan Yang Xiaozhong Du Huaqiang Liu Yun Zhang

作者单位: National Engineering Research Center of Flat Rolling Equipment, University of Science & Technology B National Engineering Research Center of Advanced Rolling, University of Science & Technology Beijing

会议类型: 国际会议

会议名称: International Symposium on Advanced Rolling Equipment Technologies(第一届轧钢设备新技术国际研讨会 ISARET 2010)

会议地点: 太原

会议语种:英文

页码: 204-209

在线出版日期: 2010-09-23（万方平台首次上网日期，不代表论文的发表时间）