冷连轧机支撑辊的辊形优化设计  

Optimization design on backup roll contour for cold tandem rolling mill

作　　者：季业益[1] 陆宝山[1] 关集俱 李强伟 Ji Yeyi;Lu Baoshan;Guan Jiju;Li Qiangwei(Department of Precision Manufacturing Engineering,Suzhou Vocational Institute of Industrial Technology,Suzhou 215104,China;Engineering Training Center,Soochow University,Suzhou 215123,China)

机构地区：[1]苏州工业职业技术学院,精密制造工程系,江苏苏州215104 [2]苏州大学,工程训练中心,江苏苏州215123

出　　处：《锻压技术》2020年第11期150-156,共7页Forging & Stamping Technology

基　　金：国家自然科学基金青年基金资助项目(51805345);江苏省自然科学基金青年基金项目(BK20170373);江苏高校“青蓝工程”资助项目(2019);苏州市重点实验室资助项目(SZS201815)。

摘　　要：结合影响函数法与条元变分法,开发出轧制过程中辊系及带材变形的模拟工具,并以此工具为基础,优化设计支撑辊的端部辊形,将端部辊形设计成幂函数曲线,并考察幂函数曲线的3个主要参数对带材边部减薄量及前张力差值的影响,最终确定幂函数曲线的最佳参数组合为:x L=250 mm、ΔR=4.0 mm、α=0.2。为确认该端部支撑辊的实际应用效果,将此支撑辊置于五机架冷连轧机的第4机架中,并用实际生产数据进行计算模拟与实验验证。结果显示:与平端支撑辊相比,使用具有端部曲线的支撑辊,不但能改善厚薄差及板形,同时可以大幅降低工作辊的弯辊力,并有利于轧机操作的稳定性。Combining with the influence function method and the strip element variation method,the simulation tool of roll system and strip deformation in the rolling process was developed,and the end contour of backup roll was optimized and designed as the power function curve based on the above tool.Then,the influences of three main parameters for the power function curve on the strip edge thinning amount and the front tension difference were investigated,and the best parameter combination of power function curve was determined as follows:x L=250 mm,ΔR=4.0 mm,α=0.2.Furthermore,in order to confirm the actual use effect of the backup roll,it was placed in the fourth-stand of the cold tandem rolling mill five-stands,and the actual production data were used for computational simulation and experimental verification.The results show that compared with the flat end backup roll,using the backup roll with curved end cannot only improve the thickness difference and the plate shape,but also greatly reduce the bending force of work roll and facilitate the stability of rolling mill operation.

关 键 词：冷连轧机 弯辊力 支撑辊 边部减薄 形状优化 

分 类 号：TG335[金属学及工艺—金属压力加工]