HC冷轧机凸度工作辊使用制度  

Using system for crown work roll of HC cold rolling mill

作　　者：彭良贵[1] 周一林 陈亚飞 邓菡 王煜 李长生[1] PENG Liang-gui;ZHOU Yi-lin;CHEN Ya-fei;DENG Han;WANG Yu;LI Chang-sheng(State Key Laboratory of Rolling Automation,Northeastern University,Shenyang 110819,Liaoning,China;Cold Rolling Mill,Panzhihua Steel and Vanadium Co.,Ltd.,Pangang Group,Panzhihua 617023,Sichuan,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]攀钢集团攀枝花钢钒有限公司冷轧厂,四川攀枝花617023

出　　处：《中国冶金》2023年第3期144-150,共7页China Metallurgy

基　　金：国家自然科学基金资助项目(U21A20475)。

摘　　要：针对某四机架六辊高精度控制辊型(HC)冷轧机组大压下率轧制时弯辊力时常饱和的问题,可将末机架工作辊辊型优化为六次多项式曲线,赋予工作辊正凸度,并适当降低承载辊缝的二次凸度和四次凸度,这样既可以增强轧机板形控制能力,也可以实现对中间辊磨损凸度的在线补偿,降低工作辊弯辊力。工作辊最大凸度优化值应根据轧制品种、轧制厚度和宽度规格、中间辊辊期长短进行综合考量。轧制试验结果表明,在1个中间辊辊期的初始阶段采用平辊型工作辊,中后期阶段采用凸辊型工作辊,可实现中间辊磨损凸度和工作辊初始凸度的良好匹配;连续轧制时弯辊力始终处于良好的调控区间,且对轧制品种和宽规格的适应性明显增强,板形综合值小于8 IU的比例可提升10%以上。To solve the production problem that work roll bending force was inclined to a positive limit, namely bending force saturation, during rolling with large reduction rate in four stands 6-hi HC tandem cold mill, work roll contour of the last mill could be designed as sextic polynomial curve. The work roll with positive crown could decrease the quadratic crown and quartic crown of the loaded roll gap, and enhanced the shape control capability of the rolling mill. Meanwhile, wear crown of the intermediate roll could be online compensated by the crown work roll and bending force was then decreased accordingly. The appropriate maximum crown of the work roll should be comprehensively decided according to the rolling varieties, product thickness and width specifications, and the intermediate roll period. Rolling test shows that utilizing flat-roll type work roll at inception stage of intermediate roll period and installing convex-roll type work roll in mid and late stage can realize the good crown match between intermediate roll and work roll. Hence, the work roll bending force is always in better regulation range during continuous rolling. The adaptability to rolling varieties and width specifications is significantly enhanced. The proportion of composite flatness value less than 8 IU can be increased by more than 10%.

关 键 词：工作辊辊型 辊缝凸度 弯辊力 轧辊辊期 HC轧机 

分 类 号：TG333.17[金属学及工艺—金属压力加工]