界面接觸熱阻實(shí)驗(yàn)與建模及其在快凝鑄軋參數(shù)設(shè)計(jì)中的應(yīng)用.pdf

1、中南工業(yè)大學(xué)碩士學(xué)位論文界面接觸熱阻實(shí)驗(yàn)與建模及其在快凝鑄軋參數(shù)設(shè)計(jì)中的應(yīng)用姓名：湛利華申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械設(shè)計(jì)及理論指導(dǎo)教師：李曉謙2001.2.1ABSTRACTArevolutionabouttheproductiontechnologyofaluminumstartedsinceHunterDauglescorporationofAmericacastaluminumstripwithtwinrollcastingfor

2、thefirsttimeintheworldin1951todayithasbecomeoneofthemainwaystoproducealuminumstripsasinchina70percentofaluminumstriparenowproductbycast.Withtherapiddevelopmentofworldeconomyandsciencetechnologydemandsforthequantityandqua

3、lityofaluminumhaveincreasedcontinuously.Sothedevelopmentofnewgenerationofsuperthinandfastsolidificationrollcastingtechnologybecomeurgentafairswhichhasbeenlistasthestatekeyprojectoffoundamentalresearchandindustrialization

4、prophaseprojectofhightechnology.Newgenerationofsuperthinandfastsolidificationrollcastingtechnologymergedsolidificationandrollingintooneprocessintimeandspacescaleswhichbroughtalotofnewphenomenonandnewquestions.Especiallyt

5、hequestionabouttheheattransfermechanismbetweentheinterfaceofthecastingrollandthestripinthefastrollcastingprocesswhichhasbeenregardedasthe“bottleneck“inthecircuitofenergytranslationoffastrollcasting.Thesolutionofsuchquest

6、ionwillprovidetheoreticfoundationfortherealizationofnewgenerationofrollcastingtechnology.Thispaperwasfunded妙theStateKeyProjectofFoundamentalResearch“foundamentalresearchaboutimprovementthequalityofaluminum“andtheScienceF

7、undSustentationProjectofHunanProvince“researchofhightemperaturethermalcontactresistance(TCR)intheinterfaceofsolidificationandplasticrheologyofmetals“.Onthebasisofsyntheticallyresearchofallsortsofdomesticandabroadheattran

8、sferproblemsintheinterfacetheheattransferbetweenthecontactinterfaceintheconditionof[hightemperatureplasticrheology]hasbeendeepstudied.AsetofTCRexperimentalsystemundertheconditionofhightemperatureandhighpressurehasbeencom

9、pletedwhichmadeupthelackofformersystemsthatcouldonlyusedintheconditionsoflowtemperatureandlowpressurealotofexperimentshavebeendone.Consideringthelossofheatflowintheexperimentsanewmethodaboutaverageheattransfercoeficientw