热轧带钢尾部鱼尾形状与控制研究2

11121.,,0660042.,,201900:/,2050,,,/,E1,:;;;:TG335:1004132(2004)14128704StudyonStripTailShapeandControlonHotMillLiXuetong1XuShimin1DuFengshan1WuJianfeng21.YanshanUniversity,Qinhuangdao,0660042.BaosteelTechnicalCenter,Shanghai,201900Abstract:A3Dthermal-mechanicalcoupledFEAmodelforverticalandhorizontalrollingwasestab2lishedwiththeaidofrigid-plasticFEM,bywhichtherollingprocesseson2050mmhotroughingtrainsofBaosteelcompanywassimulated.Thecalculatedtailshapesofstripareingoodagreementwithactualpic2tures,thusthemodelisvalidated.BasedonFEMsimulation,theformingmechanismoffish2tailonthestriptailendwasinvestigated,andthedistributionoftailcroppingateachpasswasobtained.Anegativetensioncontrolbetweenverticalandhorizontalrollerswasbroughtforward,whichcouldreducethecrop2pingoffish2tailaccordingtocalculatedresults.Inaddition,anewSSCmodelforE1standwasestablishedbasedoninvestigationofthewidthreducingonthestriptailend.Thenewmodelisabletoimprovethetailshapebetterthantheoriginalonebycontrastwithsimulationresults.Keywords:hotrolling;widthreduction;fish-tail;FEA:20031104:(50075076)0,,,,,[1,2],,(),70mm,320mm,,820mm,,,,,[3]2080,,;[4]2050,[5,6],2050,,/,2050,7821,1(shortstrokecontrol,SSC),,:,,,,,,1,,(),,,12,Markov,,,,,,,[7]/2,,[8],,,,,1/4,CPU23205032074016008,33,,(a)R1(b)R1(c)R4(d)R434,,,2050mm4381070,4,1,,35,145,,1E1,8821151420047(a)(b)45,,,,,,,R/B0,,,5,,,,45,,56,,,5,,E1R1(E1R1),,,,1600mm120mm,,6,(45)6,30,24%,6a(a)45(b)30(c)698216c1114918613102dm3,77.12050E1R1,,:TL=66.76W0.330d0.08e(1)TW1=1.310-8W02.37d0.78e+ZAS(2)TW2=30.64W-0.610TW1+ZAS(3),W0;de;ZAS,,7.2,1800mm254.8mmE1R1,78120mm40mm30mm,(a)83.4mm(b)86.2mm7120mm(a)27.1mm(b)30mm840mm8(1),,(2),1(3),,;(4)E1,:[1],,..,1993,41(2):4447[2].»¤¨Í¤·Í™.,1984,277(25):8792[3]NikaidoH,NaoiT,ShibataK,etal.FEMSimula2tionofNonsteadyDeformationinEdgeRolling.J.JapaneseSoc.Tech.Plasticity,1983,24(268):486492[4],,..:,1993[5],,,..,1999,20(6):647649[6],..,1994,29(12),7579[7]Kobayashi.MetalFormingandTheFinite-ElementMethod.Oxford:OxfordUniversityPress,1989[8]ChoiJong2Wook,ChoiJin2Won.ConvectiveHeatTransferCoefficientforHighPressureWaterJet.ISIJInternational,2002,42(3):283289():,,197610,,1965,,1960,,19690921151420047