热轧板带钢冷却过程中热力耦合计算及变形分析

40420054IronandSteelVol.40No.4April20051222111.1100042.617062ANSYS30℃/sUFC300℃/sUFCUFCTG335.11A0449-749X200504-0039-04Thermo-mechanicalCouplingSimulationandDeformationAnalysisforHotStripinCoolingProcessHANBin1SHEGuang-fu2JIAOJing-min2ZHANGZhong-ping2LIUXiang-hua1WANGGuo-dong11.TheStateKeyLaboratoryofRollingandAutomationNortheasternUniversityShenyang110004China2.HotStripMillofPanzhihuaIronandSteelCo.Panzhihua617062ChinaAbstractFortwotypicalcoolingprocessofhotstripusualforcedconvectionlaminarcoolingcoolingrateisabout30℃/sandUFCultrafastcoolingcoolingratecouldbegreaterthan300℃/sthethermo-mechanicalcouplingfieldwassimulatedbyANSYSFEMsoftwarewithdifferentsurfaceconvectioncoefficient.2-Dtemperaturefieldandstressfieldunderdifferentcoolingratewerecalculatedthentheresidualstressanddeformationcausedbyresidualstresswereanalyzedtheo-retically.BycomparingtheanalyticalresultsoftwocoolingpatternsapreliminaryapplicableconditionforUFCwasob-tained.KeywordslaminarcoolingUFCtemperaturefieldst[e-mail]2004-07-22UFCUFC4mm300℃/s7～12m11ANSYSUFC11.12abcdγα21UFCFig.1SketchoffronttypeUFC40abcd2Fig.2Effectofphysicalpropertiesonstriptemperature0.1%11.2121Table1Thermo-physicalparametersofthesample/℃/10-6K-1/Wm-1K-1/kJkg-1K-125012.851.50.54735013.447.70.58145014.042.30.64655014.538.10.72065015.034.00.82275015.629.80.81385016.127.20.81795016.627.10.65434031.3UFCANSYSPLANE134850℃5kW/m2K6kW/m2K2kW/m2KUFC47044ab3UFC-Fig.3Transectiontemperature-timecurvesatdifferentdepthofstripfortwocoolingmodeskW/m2K50kW/m2K10kW/m2K25℃20mm3UFC4UFC20s3UFC450℃±30℃200℃250℃UFCUFC10424RK℃0.5%RK4Fig.4ThermalstressduringcoolingprocessabbcWU41440363UFC1UFCBiBi1/Bi105%75UFCFig.5SketchofreartypeUFCBi=hsδλ0.11hsλδUFC6mm6mmUFC6mm5UFCUFC4UFC6mmUFC6mmUFCUFC1BuyyichilliGAnelliE.PresentStatusandPerspectivesofEurope-anResearchintheFieldofAdvancedStructuralSteelsJ.ISIJ200242121355-1356.2.#$J.CAMP-ISIJ19947412-415.562440ab5Fig.5Circumferentialstessandradialstressofthesteeltube6Fig.6Axialstressofthesteeltube1.J.200029823-27.HANBao-yunJINMingZHONGQian-xia.FE-simulationofTubeDrawingProcessJ.SteelPipe200029823-27.2.CADJ.200035334-38.HANBao-yunJINMingWUYou-caietal..CADSystemforTubeDrawingBasedonFEMSumulationsofDrawingProcessesJ.IronandSteel200035334-38.3.J.199815377-81.DUFeng-shanWUWei-yongLIUCaietal..NumericalPredictiononDrawingTubewith-outPlugJ.EngineeringMechanics199815377-81.==============================================423.%%-1J.CAMP-ISIJ19969325.4.ANSYSM.2003.5.TANGXing-LunFANQun-Bo.TutorialofANSYSApplicationinEngineering-heatTransferandElectromagneticsM.BeijingChinaRailwayPress2003.5.5.M.1983.65.6WithersPJBhadeshiaHKDH.ResidualStressPart2NatureandOriginsJ.MaterialsScienceandTechnology200117366-374.7.M.1998.65.65