带钢热精轧机组机架间冷却控制数学模型

15220034JOURNALOFIRONANDSTEELRESEARCHVol.15,No.2Apr.2003:(59995440):(19782),,;:2002208205;:2002209217,,,,(,110004):,,,:;;;;:TG335.11:A:100120963(2003)0220019205MathematicalModelforTemperatureControlinHotStripFinishingMillGroupZHANGMin,ZHOUXu2dong,LIChang2sheng,LIUXiang2hua,WANGGuo2dong(NortheasternUniversity,Shenyang110004,China)Abstract:Inordertoimprovethecontrolaccuracyofstripfinishingtemperature,theheatexchangepro2cessthatcauseshotstriptemperaturevariationduringfinishrollingwasanalyzed,whichprovidesthetheoreticalbasisofheattransferandself2studymodelforinterstandcoolingcontrol.Theheattransferandself2studyarithmeticoftheon2linemathematicalmodelforinterstandcoolingduringhotstriprollingarepresentedindetail.Thetemperaturedistributionofthestripinfinishingmillgroupisoff2linesimulatedbydevelopingprogramsandhigherprecisionisachieved.Themathematicalmodelscanbeusedonline.Keywords:hotrolling;strip;interstandcooling;mathematicalmodel;finishingtemperature,,,,116mF1F6,5,20002300mm1000mm,800mm(,60,),500mm473mm300mm,,1450mm,6,1191©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1];,[2]2.12.1.1[W/(m2)],Q:Q=2Ft-t0S(1),tt0;S;F(F=bl);lb,t,:Q=chbvt(2),c;;h;v,,:t=2cSlvh(t-t0)(3),,K=S[W/(m2)]K:t=2Kclvh(t-t0)(4)2.1.2,[3],,,t[3]:t=c0fclhlnHh(5),c0,;f;;Hh2.1.3,,,,,,W:W=VlnHh103(6),V,02200315©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:Q=AVlnHh103(7),A(A=2342);(01),,,t:t=QcV=AclnHh103(8)2.22.2.1,,,,[4],,,,,,,Q,:dQ=-(t-t)2Fd(9),();t;F;:dt=-2ch(t-t)d(10),t1t2,1,2,t11t22,:t2t1dtt-t=21-2chd(11),,:t2=t+(t1-t)exp1-2ch(12):t=t1-t+(t1-t)exp-2ch(13)2.2.2,,1000,5%7%,,[57],Q:Q=t+2731004-t+2731004F(14),(1);2,4.88;F;;ttmt,t,:Q=t+2731004F(15):t=-cFbhlt+2731004(16)F=2bl,(16):t=-2ct+2731004h(17),,:t=-2ct+2731004h(18),=ah+b(ab),,,ab31.512mm0.3MPa,25,9801150,122:4©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2)A,1Table1MaintechnicalparameteroffinishingmillgroupF1F2F3F4F5F6/mm620/650620/650600/650600/650600/650600/650/mm145014501450145014501450///////mm1180/13001180/13001180/13001180/13001180/13001180/1300/mm145414541454150015001500/(rmin-1)30.562.550.0102.575150100205125263147323/(ms-1)1.052.351.693.492.555.103.407.314.259.825.011.023Q235ATable2RollingscheduleforQ235Ammmm%/(ms-1)smm/kN1.501000F1F2F3F4F5F630.0013.416.873.862.401.771.5055.2948.7943.8037.8826.2514.950.501.122.193.906.278.5110.000.501.122.193.906.278.5110.00161.10161.10161.10161.10161.10161.10161.106366306146026316501416613269129131326812870102751427013343129781333612933103252.701300F1F2F3F4F5F630.0015.608.745.503.913.132.7048.0044.0037.0029.0020.0013.500.721.392.483.935.546.928.000.721.392.483.935.546.928.0092.5492.5492.5492.5492.5492.5492.5463663061460263165017303161561452713178112509098175241633014673133021133591615.001300F1F2F3F4F5F630.0017.8313.079.287.055.785.0040.5735.0029.0024.0318.0115.600.711.241.912.703.555.000.711.241.912.703.555.0080.5180.5180.5180.5180.5180.5180.5163663061460263165020352190811791816093140591252420901196551825016307142131274422200315©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(A),(AB),(BC);(CD),2,3,:,,,,,:,,4(1)3,(2),,,(3),:[1]AbelCA.InterstandCoolingduringtheProcessingofControlledRolledPlatestoImproveMillProductivity[J].Iron&SteelSocofAIME,1997:5452554.[2],,.[J].,1998,33(8):31234.[3].[M].:,1992.[4]SunCG,HwangSM.PredictionofRollThermalProfileinHotStripRollingbytheFiniteElementMethod[J].ISIJInternation2al,2000,40(8):7942801.[5],.[M].:,1997.[6],,,.400MPaMFS[J].(),2002,23(6):5692572.[7]JamesFE,LainDR,HowardRW.NumericalModelingofHotStripMillRunoutTableCooling[J].IronandSteelEngineer,1993,(1):50254.322:4©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.