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北京科技大学本科生毕业设计（论文）--1摘要冷轧带钢是钢铁工业的主干产品，应用于国民经济各部门，其在金属材料总产量中所占的比例也在不断地提高。随着汽车、家电、轻工制造业等自身自动化水平的提高，对冷轧板带产品的板形精度提出了越来越严格的要求。本文以某宽带钢UCM六辊冷轧机为研究对象，开展了UCM轧机力学行为与板形控制性能研究，完成的主要工作如下：(1)结合生产实际建立了UCM六辊冷轧机辊系弹性变形有限元模型。采用大型通用有限元软件ANSYS的APDL语言，建立了可参数化修改的UCM六辊轧机辊系变形有限元模型，提高了有限元模型仿真计算的适应性。(2)仿真分析了宽带钢UCM六辊冷轧机板形控制特性。利用所建立的辊系弹性变形有限元模型，分析了工作辊弯辊、中间辊弯辊、中间辊横移及轧制力等因素对轧机的力学行为及板形控制性能的影响，在大量的仿真计算及数据分析的基础上，揭示了辊间压力分布、辊缝凸度调节域、辊缝横向刚度等反应轧机力学行为和板形控制性能的指标的变化规律，为寻找均匀辊间压力分布改善板形的途径提供了可靠的理论依据；(3)提出了UCM六辊冷轧机中间辊新辊形。针对生产现场的板形缺陷和轧辊剥落等问题，通过理论研究和仿真分析，提出了兼顾板形控制能力和防止轧辊剥落的新中间辊辊形，并分析了其板形控制性能。关键词：六辊轧机，有限元法，力学行为，板形控制，辊形北京科技大学本科生毕业设计（论文）--2宽带钢UCM六辊冷轧机力学行为与板形控制性能MechanicalBehaviorandShapeControlPerformanceofWideStripUCMSix-highColdRollingMillsAbstractCold-rolledsteelisthebackboneoftheironandsteelindustryproducts,appliedtoallsectorsofthenationaleconomy,anditsproportionofmetallicmaterials'productionhasbeenimproved.Withtheautomotive,homeappliances,lightmanufacturingimprovingtheirlevelofautomation,stringentrequirementsontheshapeaccuracycold-rolledplateandstripproductsisincreasing.OneUCMsix-highcoldmillistheobject，thatisusedtocarryouttheresearchonmechanicalbehaviorandshapecontrolperformance.Mainresearchingcontentsareasfollows:(1)CombinedwiththeproductionoftheactualestablishmentoftheUCMsix-highcoldmill,aparametricstaticmodelofrollclusterofsix-highmillwasestablished.Uselargegeneral-purposefiniteelementsoftwareANSYS-APDLtomodifytheparametersoftheUCMdepartmentofthesix-highmillrolldeformationfiniteelementmodelandmadethefiniteelementmodeloftheadaptivesimulationbetter.(2)Analysistheshapecontrolperformance.Establishedbytheuseofrollelasticdeformationfiniteelementmodel,ananalysisofworkrollbending,rollbendingthemiddleandintermediaterollshifting,factorssuchastherollingforceofthemillandthemechanicalbehaviorofshapecontrolperformance,inalargenumberofsimulationanddataanalysisbasedonrevealedtheinter-rollpressuredistribution,rollgapadjustmentcrowndomain,thehorizontalstiffnessofjoints,suchasrollermillmechanicalresponseandperformanceofshapecontrolofchangesofindicators,inordertofindauniformpressuredistributionbetweenrollswaystoimprovetheshapeprovidesareliable北京科技大学本科生毕业设计（论文）--3theoreticalfoundationformodifyingthetechnicalprocessparametersandsearchingtheroutinestoimprovestripshapequality.(3)Puttingforwardanewmiddlerollcontour.Sitefortheproductionofplate-shapeddefectsandrolloffandsoon,throughtheoreticalstudiesandanalysis,puttingforwardanewmiddlerollcontourtobalancetheshapecontrolperformanceandpreventrollpeeling,andananalysisoftheoftheirshapecontrolperformance.KeyWords：Six-highmill,Finiteelement,Mechanicalbehavior,Shapecontrol,Rollcontour北京科技大学本科生毕业设计（论文）--4目录摘要..................................................................................................................................1Abstract.....................................................................................................................................2引言..................................................................................................................................11冷轧带钢板形控制研究综述..............................................................................................21.1板形及板形影响因素................................................................................................21.1.1板形的基本概念.............................................................................................21.1.2横截面外形.....................................................................................................21.1.3带钢平坦度.....................................................................................................31.1.4浪形的生成过程............................................................................................41.1.5影响板形的主要因素....................................................................................51.2冷轧带钢轧机及板形控制技术...............................................................................61.2.1冷轧带钢轧机现状........................................................................................61.2.2板形控制技术.................................................................................................91.3研究背景及主要内容..............................................................................................101.3.1研究背景及意义..........................................................................................101.3.2研究意义.......................................................................................................111.3.3研究目标及主要内容...................................................................................131.4本章小结..........................................................................................................132UCM轧机六辊辊系三维有限元模型的建立.................................................................142.1有限单元法的基本知识.........................................................................................142.1.1结构离散化...................................................................................................142.1.2单元分析........................................................