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11,21,21,2(1.;2.),,,,,700720,104MPa,1.5m/s,320mm,,;R14;;TG249.2;TG146.2+1A1001-2249(2009)01-0036-03DOI:10.3870/tzzz.2009.01.012:2008209226;:2008211226:,,1983,,,8006626032(200240),:021-54742714,13764103550,E-mail:zhaoxiaoer@sjtu.edu.cn,[1]:[2],,;,,,[3],,,,,11.1R14(),11R14%wBCuSiMgZnFeMnNiAl4.05.014.015.50.650.50.90.50.35000kN,,1,HGPB21,10min,,,,1,,1.2,12,2212,,,0;5302h,,,=(0-)/022.13700720740760,63200929169MPa,1.50m/s,300mm,,,(),700720,3.012%3.380%,720740,3.380%4.900%,740760,4.900%11.024%,,3,85%[4],,,100g0.01mL0.70mL,100g,,3.00mL,,,[5],,,,,,510m,,,[6],,,,700720,,,,,2.245269104120MPa,710,1.50m/s,300mm,,,69MPa,,;,,4,[7],69MPa,,,,;69MPa,,[1],;,,[8],,,,,104MPa2.3[9]50.901.503.805.30m/s,710104MPa300mm5,,;;,,,,,,,[8],,73,[10],,,,,,[11];,,,,,,,,,1.50m/s2.46280320340360mm,710104MPa1.50m/s,,,6,,,,,,,,;,,,,,,,,,,,,,[12],,,,,[4],320mm3(1),,,,,700720(2),,,104MPa(3),,,,;,,,1.50m/s(4),,,,,,,320mm[1],,,.ADC12Z[J].,2007,56(11):117121174.[2],,,.Al25Cu[J].,2006,26(1):43245.[3]LEESG,GOKHALEAM,PATELGR,etal.Effectofprocessparametersonporositydistributionsinhigh2pressuredie2castAM50Mg2alloy[J].MaterialsScienceandEngineering,2006,A427:992111.[4].[M].:,2003.[5].[J].,1993(1):30234.[6],.[J].,2005(6):124.[7],.AM60B[J].,2007,23(6):26229.[8],,,.[J].,2007(10):21224.[9].[M].:,1997.[10],,,.AM50[J].,2004,53(8):6452648.[11]VERRANGO,MENDESRPK,DALLAVLVO.DOEap2pliedtooptimizationofaluminumalloydiecastings[J].JournalofMaterialsProcessingTechnology,2008,200:1202125.[12].[J].,2006,26(1):64265.(:)832009291semi2solidalloyandtopredictprocessingparameters.KeyWords:Multi2scaleSimulation,Semi2solidForm2ing,Near2liquidusCasting,Liquid/solidPhaseTrans2formationDesignofMonitorandControllerforDieCastingMa2chineBasedonDSPPengJishen,LiTaochang,SongLiye(DepartmentofElectricalEngineering,LiaoningTechnicalUniversity,Huludao,China)2009,29(1)00240027Abstract:DesignofmonitorandcontrollerfordiecastingmachinewasproposedbasedontheDSPtoim2provecontrolsystemperformanceofdiecastingma2chineandtorelieflaborintensityofworkeraswellasraisingproductqualityandefficiency.BasedonTMSS320F2812DSPcore,themonitorandcontrollerextendperipherallystoragemodule,communicationmodule,analogueinput/outputmoduleandhuman2machineinterfacetofullyutilizepowerfulcomputingcapability,whichexhibitsthedesirableavailabilityofrealtimedetectingdieprocessingparametersandreal2timecontrollingdiecastingprocess.KeyWords:Die2castingMachine,MonitorandControl2ler,CircuitLayout,InjectionNon2linearPressureConditioninFillingofAluminumAlloyWheelinLowPressureDieCastingChenJi2gang1,LiQiang1,2,WangGe1(1.CollegeofMechan2icalEngineering,YanshanUniversity,Qinhuangdao,China;2.HebeiUniversityofScienceandTechnolo2gy,Shijiazhuang,China)2009,29(1)00270029Abstract:Inprocessoflow2pressuredie2castingfillingforaluminumalloywheel,thepressureconditionisthekeyinfluentialfactorsforquality.Amethodofnon2linearpressureloadwasputforward.Basedonthesimulationoflinearpressureandnon2linearpres2sure,feasibilityofnon2linearpressurewasvalidated,andeffectsofpressureconditiononfillingprocessanddefectsindiecastingweredescribed.Steadyfillingprocesscanberealizedbyapplyingnon2linearpressuretowheelwithcomplicatedcavity.Pressure2applyingvelocitycanbeproperlyincreasedafterfront2flowfillsthecavity.Thepressureshouldbeincreasedgentlyinthefillingofwheelspokeandlowerhalf2spaceofwheelrim,whileintherisingfillingprocessofwheelrim,thepressure2applyingvelocitycanbeincreasedonceagain.Theresultsindicatethatnon2linearpres2sureconditioncangreatlyreducedefectsinfillingprocesstoimprovethequalifiedproductrateofcom2plicatedwheel.Therationalnon2linearpressurecondi2tioncanberealizedbynumericalsimulationandtrialdie2castingundertheconditionofkeepingsteadyfront2flow.KeyWords:AluminumAlloyWheel,NumericalSimu2lation,LowPressureDieCastingFilling,Non-linearPressure2applying,PressureConditionHardSpotsinDieCastingZL111AluminumAlloyPartsZhangXiaoyan,YuXingzhi(DepartmentofMechani2calEngineering,HenanPolytechnicInstitute,Nan2yang,China)2009,29(1)00300032Abstract:HardspotsindiecastingZL111aluminumalloycrankcasewereobservedbyOM(opticalmicro2scope),electronicproberandmicro2hardnesstester,andsoon.Theresultsrevealthatserioussegregationandexceeding2standardofchemicalcompositioninthecrankcasecanbeexamined.Thereexistsheterogene2ousdistributionofwhiteblockandgrayinclusionaswellaslow2graycompoundhardspotsinthemicro2structure,whichcorespondingtoquenchinglowhard2nessspotsentrappedbyturbulentflowinjection,unsmeltedSiphaseandspinel,MgAl2O4,AlSiMnFephaseaswellascompoundhardspotofintermetalliccompound,respectively.KeyWords:AluminumAlloy,DieCastingParts,HardSpot,DefectsDevelopmentofMulti2functionCounter2gravityCastingEquipmentforAl2alloyPartsChaiYan,HaoQitang,JieWanqi(SchoolofMaterialsScienceandEngineer2ing,NorthwesternPolytechnicalUniversity,Xian,China)2009,29(1)00330035Abstract:Inordertoimprovetheperformanceopera2tionforvariousaluminumcastings,amulti2functionalcounter2gravitycastingdeviceforaluminumalloywasdeveloped.Keystructureofthedeviceconsistsoftwosealed2injar,i.e.theupperjarandthenetherone,inwhic