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105199810JOURNALOFIRONANDSTEELRESEARCHVol.10,No.5Oct.19983DevelopmentofOptimizationSystemforthePassofCross-RollPiercerLiShengzhiSunZhongjian395:(EastChinaInstituteofMetallurgy):,,(243002),,,,,,ABSTRACTAnoptimizationsystemforthepassofcross2rollpiercerissuccess2fullydeveloped.Thesystemhasthreemainfunctions:optimizationoftooldesign,optimizationofadjustingparametersforpiercerandanalysisonlateralevennessofwallthicknessofshellpierced.Itcanbeusednotonlyforpassdesignandoff2lineanalysisbutalsoforguidingintheadjustmentofpiercer.KEYWORDSseamlesstube,skewrolling,piercer,passdesign,evennessofwallthickness,,[1],,:;,,,[2,3],,,[4,5],,,11.1[5],x=tR(t)(1),(1)R(t)=1+D2B-B2-4AC2A(1),ABCD(2)A=K2D2+K6D+K3B=(K4t+K8)D+K5t+K9C=K1t2+K7t+K10D=K6(K5t+K9)-2K3(K4t+K8)K6(K4t+K8)-2K2(K5t+K9)(2)1x=tFig.1Sketchofrollopeningatcrosssectionwherex=t,tK1K10(3)K1=1-cos2Acos2Uöcos2BK2=1-sin2Acos2Uöcos2BK3=1-sin2Uöcos2BK4=sin2Acos2Uöcos2BK5=cosAsin2Uöcos2BK6=-K5tgAK7=0.5K5(DHPcosA+BHP)-DHPcosAcosUtgBK8=-K7tgAK9=K3(DHPcosU+BHP)+DHPsinUtgBK10=0.5[K9-0.5(DHPcosU+BHP)](DHPcosU+BHP)-0.25D2HP(3)A;U;B(+,-);DHP;BHP;U()UU=tg-1(cosAtgU)(4),R(t),1.2Bt,,x1x2(5)x1=Lt1+Lt2-Ltv-b+0.5DHPsinUx2=Ltv+x1(5)Lt1;Lt2,Ltv;bBt=tg-1Rx2-Rx1Ltv(6)Rx1,Rx21.3B2,(AU)Bt,AUBt,(6)B2,(1)(6),1.4(),,,,(),,,,(),,Aopt,(),1.5Edq,R(-b+0.5DHPsinU),Edq=DB-R(-b+0.5DHPsinU)DB100%(7)22.1,461102Fig.2Organizationofthefunctionblocksoftheoptimizationsystem,8,22.2(1),,,,,:,,,,(2),,BtLt2,,,,2,;,,;;,(),RolandDXYIBM,,,:;;C;,(3)715:,,,,,,,,3(3),,,,SmaxSminSA(Smax-Smin)öSA(4),()3Diesher,142mm146mm175mm184mm16.7519.00mm:75mm,3.603.63,2.75:13,154.2mm,6468mm15.25%15.32%8.5%11.13%,4.19%6.75%,27.35%44.3%,4(1)()(2),,(1998215)1.,1994,29(2):402.,1991,(5):483.,1989,(4):264,.,1997,(6):415.,1990,7(4):178110