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ID:33017978
大小:3.93 MB
页数:110页
时间:2019-02-19
《板坯连铸的高温性能分析与组织模拟》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、重庆大学硕士学位论文II英文摘要ABSTRACTContinuouscastingisoneofthemostactivetechnologiesinsteelindustry,andthehigh-temperaturepropertiesofcontinuouscastslabareveryimportantforguidingitsproductionprocess.Thehigh-temperaturephysicalandmechanicalpropertiesparametersarealsoveryimporta
2、ntduringtheslabcontinuouscastprocessdespiteimprovingsolidificationcoolingsystem,judgingcracksincastingslabandestablishingparametersofdynamicsoftreductionincontinuouscasting.PaperselectsteelAandBslabcastinginOneIronandSteelCompanytotestpartofmechanicalbehaviorandphys
3、icalpropertyofsteelcastingblankunderhightemperature;onthemathematicalmodelofheattransferandstressvarietyinslabcontinuouscastingprocess.Thetestandmeasurementontwosteelgradestemperatureexpansionanddifferentialthermalanalysisaremadeaccordingtotheactualsituation.Through
4、thesetestandanalysisthetwosteelshightemperaturephysicalpropertyofcastingslabliketemperatureexpansion,heatcapacity,latentheat,soliduscurveandliquidlineetcareachieved.Indifferentspeedofheating,weobtainedtheheatcapacityofcastingslabintheheatingprocessandcoolingprocess.
5、Mechanicalpropertyvariationswiththetemperaturechangingfrom600degreecentigradeto1300degreecentigradearegottenthroughtheTensiontesttontheGleeble-1500Dandthesteelhightemperaturebrittlenesszoneespecialthethirdonearedeterminedaccordingtothereductionrateofthecross-section
6、.ThesecondbrittlezoneofsteelBisaboutbetween775degreecentigradeand950degreecentigrade.ThesecondbrittlezoneofsteelAisaboutbetween725degreecentigradeand900degreecentigrade.Thesteelpropertieshavebeenusedtodefiningsuitableboundconditionswhichareveryusefulforthecastingsla
7、bsecondarycoolingsimulationsoftware.ThenwiththesimulationanoptimalofthesecondarycoolingsysteminthecontinuousslabcastingatNo.4steelmakingandrollingplantofOneIronandSteelCorp.Thepracticalproductionshowsgoodresultsaftertheoptimal,itprovedthatthesteelpropertieshaveveryi
8、mportantmeaningtooptimalofthesecondarycoolingsystem.Alsothesteelpropertiesandsurfacetemperaturetestsofcastingslabresultsareveryimportantba
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