TC4合金大型框鍛件成形工藝設(shè)計(jì)與過(guò)程模擬.pdf

1、西北工業(yè)大學(xué)碩士學(xué)位論文TC4合金大型框鍛件成形工藝設(shè)計(jì)與過(guò)程模擬姓名：張曉露申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：計(jì)算材料學(xué)指導(dǎo)教師：李付國(guó)20070301西北工業(yè)大學(xué)工學(xué)碩士學(xué)位論文AbstractRecently、Ⅳimthedevelopmentofaerialpartstowardsthinwalledcomplexandlargescale，itisnecessarytoimprovetheformingpropertyofstagnan

2、tmaterials，suchastitaniumalloy，hightemperaturealloyandso011Asaresultofgiantresistanceofdeformationnarrowforgingtemperatureintervalandothercharacters，basedonexistingfacilities，howtoadequatelym&keuseofplasticworkingsimulat

3、iontechniquetoaccomplishtheproductdesignandqualitycontrollingrapidlyandaccuratolyhasbecomeanincreasinglyhottopicTherefore，inthisdissertationfl“amesuperstructureofXplanehasbeeninvestigatedAccordingtotheformingcharacterist

4、icsofTi6|Al_4ValloythemethodofdynamicmaterialmodelanalysisandnumericalsimulationhasbeenusedtoanalyzethehotworkingcharacterofT6舢4Valloystampforgingtechnologycharacteristicsoflarge—scalefiRmeandthedistributionrulesofrecrys

5、tallizedstructureafterforgingAbriefintroductiontotheworkandmainachievementsareasfollows：1Baseonhotprocessingmap，thehotworkingcharacterofTi6A14Vanoyduringhightemperatureformingprocesshasbeeninvestigatedandtherangeofhotwor

6、kingprocessparameterscorrespondingwithstableregionandunstablezonehasbeendeterminedTheyprovidenecessarytechnicalsupportfortheoptimizationofprocessparametersandtheimplementofstructurecontrollingafterforging2Accordingtother

7、equirementofpartsdrawingandrelativetechnicalrequirementforginganddiehavebeendesignedalthesRmetimeformingtechnologicaldesignhasbeendeterrdnedBasedoncharacterofforging，differentbilletshapehasbeenalreadydesigned3BasedonMSCS

8、uperforgesoftware，thestampforgingprocessoflargesizeddropforginghasbeensimulatedandanalyzedwithMulti—stageFiniteVolumeMethodTherefore，areliabletechnicalinsuranceWasprovidedforofproperdistributionofteclmologicalresourceand