深锥形壳体温挤压成形工艺与模具

2520109JOURNALOFNETSHAPEFORMINGENGINEERING571,1,2,1,1(1.,710043;2.,400039):针对某铝合金深锥形壳体的温挤压成形过程,用有限元数值模拟软件进行了模拟,分析了成形工艺及模具设计提出了消除产品壁厚差较大孔口高低不平现象的措施:铝合金;深锥形壳体;温挤压成形;有限元;工艺参数;数值模拟;模具设计:TG376:A:16746457(2010)05005704:20100805:王长林(1955-),男,山东荣城人,高级工程师,主要从事金属塑性成形工艺及模具的研究WarmExtrusionTechnologyandDieofDeepTaperedShellWANGChanglin1,CHENJunzhi1,ZHAOZhixiang2,WANBaowen1,LIUHanxiong1(1.Technologysection,Xi'anDongfangGroupCo.Ltd.,Xi'an710043,China;2.No.59InstituteofChinaOrdnanceIndustry,Chongqing400039,China)Abstract:Warmextrusionwassimulatedbyfiniteelementsoftwareforanaluminiumalloydeeptaperedshell.Theformingtechnologyanddiedesignwereanalysed.Measureswereputforwardtotheproblemsoflargerwallthicknessdifferenceandraggedorifice.Keywords:aluminiumalloy;deeptaperedshell;warmextrusion;finiteelement;technologyparameter;numericalsimulation;diedesign1,2A12,():3.9%~4.8%,1.2%~1.6%,0.3%~0.9%,,,,,,,,,,12,3,350~380,150,1Fig.1Deeptaperedshell20109582Fig.2Modelofwarmextrusion3Fig.3Extrusionblank169,0.5mm,20000,52mm45mm,95518.8mm34567,1530kN2A12[2],8Deform,,,87%,,4Fig.4Metalflowsimulation5Fig.5Effectivestressinformingprocess25:596Fig.6Effectivestraininformingprocess7Fig.7Loadcurve82A12Fig.8Stressstraincurveof2A122,,,,,,,99Fig.9Diestructureofwarmextrusion,,,,,,,,,,,:,,,,,,,,200mm/min2010960,,,,,,,,3,:;;,;;,,,,1),,,2),,(),3),,,10~15mm,,,,,,530!,4),,,,5),,;,,(70mm),,,4,,,,,,,,,50%,,,:[1],.LY12[J].,2000,21(4):282-285.(上接第23页)[3]CHOIY,HEOY,KIMHY,etal.InvestigationsofWeldlineMovementsfortheDeepDrawingProcessofTailorWeldedBlanks[J].JournalofMaterialsProcessingTechnology,2000,108(1):1-7.[4]KINSEYB,LIUZH,CAOJ.NewApparatusandMethodforFormingTailorWeldedBlanks[J].SAE,1999,108(5):653-660.[5]AHMETOGLUMA,BROUWERSD,SHULKINL,etal.DeepDrawingofRoundCupsfromTailorweldedBlanks[J].JournalofMaterialsProcessingTechnology,1995,53(3/4):684-694.[6],,,.[J].,2007,33(8):20-24.[7]HESJ,WUX,HUSJ.FormabilityEnhancementforTailorweldedBlanksUsingBlankHoldingForceControl[J]JournalofManufactureScienceandEngineering,2003,125(3):461-467.