球墨鑄鐵銅金屬型鑄造工藝和性能的研究.pdf

1、東北大學(xué)博士學(xué)位論文球墨鑄鐵銅金屬型鑄造工藝和性能的研究姓名：唐驥申請學(xué)位級別：博士專業(yè)：材料學(xué)指導(dǎo)教師：孫旭東20051201東北大學(xué)博士學(xué)位論文ABSTRACTProcessingandPropertiesofDuctileIronCastingswithCopperbasedAlloyMoldAbstractTheobjectiveofthispaperistodevelopapermanentmoldcastingtechniq

2、uewithrapidsoiidificationofmetalmeltsbyusinghighconductivecopper—basedalloymoldsandtoobtainductileironcastingswithresultantrefmedgrainsTakingasatypicalexampletheductileironidlegearcastingsforautomobilein0111“countrytheca

3、stingprocessofductileironusingwatercooledcopperbasedalloymoldswasdevelopedTheUseofwatercooledcopperbasedalloymoldisanimportantstepintheprocess，inwhichtheheatofthemetalmoldCmIbecarriedawaybycoldwaterandthustemperatureofth

4、epermanentmoldduringthehighspeedcastingprocessremainsconstantAccordingtotherequirementsforthepermanentmoldtoinsurehighconductivitycomparativelygoodwearresistanceandeasymachinabilityanewCr—ZrCucopperbasedalloyWasdeveloped

5、forpermanentmoldcasting，Itschemicalcomposition，mechanicalpropertiesandmetallurgicalprocessingtechnologyweredevelopedBasedontheWindowsXPoperatingsystem，UGpatternsoftwareandFoxProdatabase，andusingtheUGsecondarydevelopmentf

6、unctionforthedevelopmentofapplicationprogram，thegeneralframeworkoftheCADsystemforthepermanentcopperbasedalloymoldWasestablishedMethodsforrealizingthestructuraldesignmoduleofthemoldcavitywerestudied，aimingatachievingCAD／C

7、AEsoftwareavailableforcopperbasedalloymoldForthemetalmoldcastings(eg，theironmoldductileironidlegearandthecoppermoldductileironidlegear)，anumericalsimulationmethodformoldfillingandtemperaturefieldcalculationwasproposed，SO

8、astopredictcastingdefectsintheidlegearcastingsTemperaturevariationduringmoldfillingandmetalsolidificationwasmeasured，andthecorrespondingCAEsoftware(Z—castsoftware)waswrittenTheapplicationofthistechnologyisbeneficialtothe