连续退火线平整机辊形优化

对连续退火线平整机的板形问题进行研究.通过实际生产数据的统计分析,基于减小有害接触区和增强弯辊力调控功效的思想,利用影响函数法下的辊系弹性变形计算提出了相应的平整机支持辊辊形优化目标.采用分层序列法处理多目标函数,并通过混合遗传算法进行求解,设计出新的辊形配置方案.使用二维变厚度理论建立辊系有限元模型,对辊缝横向刚度、弯辊力调控功效进行计算校核.将研究结果应用于实际生产,改善了平整机的板形控制效果,降低弯辊负担.

Optimization of roll contour for a temper mill in a continuous annealing line

A study on stripe shape rolled with a temper mill in a continuous annealing line was done.Through analyzing production data,based on the ideas of both reducing the unfavorable contact area and improving the roll bending force control ability,the optimization objectives of backup roller contour in the temper mill were proposed by using the influence function method to calculate the elastic deformation of the roller system.A lexicographic method was adopted to cope with the multi-objective function,the optimal calculation was implemented by a hybrid genetic algorithm,and a new plan for roll contour configuration was offered.A finite element model of the roller system was established by the 2-dimensional varying-thickness theory to calculate and collate the roll gap horizontal rigidity and the roll bending force control ability.After the result is applied to real production,the stripe shape control effect of the temper mill is improved and the roll bending burden is decreased.