铸轧速度和冷却强度对立板过程影响的研究

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1、太原科技大学硕士学位论文铸轧速度和冷却强度对立板过程影响的研究姓名：罗晓锋申请学位级别：硕士专业：钢铁冶金指导教师：孙斌煜20090701ABSTRACTT、vin．rollstripcastingprocessisabsorbingtheattentionofthesteelproducersoftheworldasoneofthenewtechnologiesforitssuitabilityforthesteelindustrydevelopingtendencyoflowenergyconsumpU

2、on，shortprocedure，highspeedandlowproductioncost．Theconsumers’demandofsmalllotandmultiplegradesisingreatneedoftheprocesstObesuccessfulandenterpracticalapplication．ButthecontrollingrangesofprocessparametersaremverynalTOWvariantranges．Smallvariationoftheproce

3、ssparametersmayproduceseveredamagetothecastingstrip，SOcomputersimulationISurgentrequiredtosimulatetheprocessinordertOprovideoptimizedprocessparametersforcontrollingtwin—rollstripcastingprocess·Thepresentpaperendeavorstostudytheinfluenceofcastingspeedandcoo

4、lingintensityontwin--rollstripcastingprocess·Acomprehensiveinvesfigationisconductedtheoreticallyintothepollmoltensteel，thecastingrolloftheheattransferprocess，andthetemperaturefieldsofthemoltensteelandcastingrollinthetwin-rollstripcastingprocesshavebeenachi

5、evedbyfiniteelementmethodandCprogram．Andtheresearchsituationoftwin·rollstripcastingtechniquewassummedup，thechangelawsoftheexploratoryresearchtothecastingprocessbyusingthelargefiniteelementanalyzingsoftwarewasdone，including：Basedonthecharacteristicofheattra

6、nsferofthemetalinmoltenpool，itpresentedanewmethodofcreatingmathematicalmodelandanewmathematicalmodelofheattransferequaionwasmade．Thetreatmentsforkeyproblemssuchasthesolidificationheatandturbulenceviscosityetchavebeenconductedsuccessfully．Anmethodcombinings

7、imulation，calculationofthermalequilibriumandmeasuredresultswasproposedtotreattheheattransferboundaryconditionbetweentherollandmoltenpooleffectively,andthesimulationaccuracyISinlDrovedsignificantly．Thedetailedheattransferboundaryconditionsbetweentherollandm

8、oltenpoolfordifferentprocessingconditionswerepresented·UsingFEAcommercialpackageandCprogram，anumericalsimulationtorIIItemperaturejfield。fthem。1tenD。。landther。11duringthesolidmcationof似mrolllthinstripprocess一-