360mm×450mm大方坯连铸在线凝固传热模型的研究与应用

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1、●东北大学硕士学位论文AbstractStudyandApplicationofOn-·LineSolidificationandHeatTransferModelfor360mmx450mmBloomContinuousCastingAbstractAsoneofthecoremodelsofdynamicsoftreductioncontrolsystemforbloomcontinuouscasting，theon-linesolidificationandheattransfermodelprovidesthesolidificationprocessparametersforthe

2、othertwocoremodels，suchassecondarycoolingdynamiccontrolmodelanddynamicsoftreductionmodel．Thecomputationpreciseoftheon-linesolidificationandheattransfermodelisdirectlyrelatedtotherationalityofreductionpositionandtheeffectivenessofdynamicsoftreduction．Onthebasisoftheactualconditionsof360mmx450mbloomc

3、ontinuouscastingmachineinsomeonesteelworks，aOll—linesodificationandheattransfermodelWasestablished，thatprovidedprocessingparametersforthedynamicsoftreductioncontrolsystem．Themainresearchperformedandthecorrespondentresultsobtainedareasfollows：(1)mestablishmentofon—linesolidificationandheattransfermo

4、delforbloomcontinuouscasting．Theon-linesolidificationandheattransfermodelWasestablishedbyideaoftracingelement，whichassumedthatthetracingelementwasbornatmeniscusinmouldanddiedoutatthefinalwithdrawalandstrengtheningmachine．Thewholestrandconsistedofmanytracingelementshandbyhandandtheattributionofeacht

5、racingelementwasrelatedtopractice．(2)Thedevelopmentofon-linesolidificationandheattransfermodelforbloomcontinuouscasting．Theon—linesolidificationandheattransfermodelwasprogrammedandcreateddynamiclinklibrary,usingtheMFCappwizard(d11)inVC++6．0developmentenvironment．nledynamiclinklibraryofon-linesolidi

6、ficationandheattransfermodelWastransplantableandaccessedsimultaneouslybymultipleapplication,sothatrepeatingmeaninglessdevelopmentworkWasavoidedandmultiplestrandon-linecomputationis．IV．lengthofmushzoneare2．4m，2．75mand2．55mrespectively．AlthoughthesolidificationprocessWaSimpactedbysuperheatgently,itha

7、Sagreateffectonshellthicknessattheexitofmould．WhensuperheatincreaSedIO*C，thesurfacetemperatureincreaSed5"Caround，butthesheUthicknessatexitofmouldreduced2．7％．Keywords：bloomcontinuouscaSting，solidificationand