国内外消失模铸造技术研究新进展第5页,汽车发动机缸体缸盖消失模铸造技术的

  本文关键词：国内外消失模铸造技术研究新进展，由笔耕文化传播整理发布。

来源： 关键字： ,国内外消失模铸造技术研究新进展

延伸：汽车发动机缸体缸盖消失模铸造技术的研究与应用[1]
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at80MPabyusingthedesignedsqueezingcastingmouldsuitableforconventionalhydraulicpress.Solidsolutionandartificialageingcanimprovethestrengthandplasticityofthebeam-barrelMgalloyparts.KeyWords:MagnesiumAlloy,DirectSqueezingCasting,Smel-ting-castingMethod,HeatTreatment,MicrostructureandProp-erties

ZA27AlloyCastingswithHighHeigh-tdiametersRatioinSqueezingCastingLiChenxiCaoLiangSanJingchaoXuNaBaiYanhuaLiRongde(ShenyangUniversityofTechnology,Shenyang,China)2005,25(10)610~612

AbstractGenerally,thesqueezingcastingisonlyemployedforthecastingswhoseheigh-tdiameterratioislessthan3.5.Researchingthe

castingswithhighheigh-tdiameterratioinsqueezingcastingcanex-tendtheapplicablescopesoftheadvancedcastingtechnology.The

mechanicalpropertiesoftheZA27alloywiththehighheigh-tdiameterratioof7anddistributionoftemperature,pressureandshrinkageporosityduringsolidificationprocesswereinvestigatedbyexperimentandnumericalsimulation.Itisrevealedthattheshrinkageporosityinthecastingswithhighheigh-tdiameterratiocanbeobviouslyreducedwiththeincreaseofthepressure.Throughrationallycontrollingpour-ingtemperature,preheatedtemperatureformouldandtemperaturedistributionofthecastmould,theshrinkageporosityinthecastingscanbeeliminatedtoobtainthecastingswithhighandevenmechan-i

calproperties.KeyWords:SqueezingCasting,CastingswithHighHeigh-td-iameterRatio,MechanicalProperties,ShrinkagePorosityEffectsofProcessingParametersontheMechanicalPropertiesofDieCastingAM50MgAlloyWuWeiZouZhihouMaChunyanYangLinChenLijiaLiuZheng(ShenyangUniver-sityofTechnology,Shenyang,China)2005,25(10)612~614

AbstractEffectsofprocessingparameters,includinginjectionpres-sureat380~420MPa,mouldtemperatureat130~210andpunchvelocityat1.8~3.4m/s,onthemechanicalpropertiesofAM50Mgalloyindiecastingwereinvestigated.Withproperprocessingparame-ters,thetensilestrength,yieldstrengthandelongationatroomtem-peratureoftheAM50Mgalloycanreach238MPa,122MPaand13.6%,respectively.KeyWords:MgAlloy,DieCasting,MechanicalpropertiesReviewofProgressinInvestmentCastingTechnologyatAbroadPart:FastForcedAbrasionChenBing(BeijingUniversityofAeronauticalandAerospace,Beijing,China)2005,25(10)615~617AbstractAnewabrasionmateria-lAl2O3ceramicsneartodiamondin

hardnesswasintroduced.Theabrasionmaterialcanbesubjectedtohighpressureduringabrasionsothatthefastertheabrasivevelocityis,thelongertheservicelifeoftheabrasivetoolis.Theadventofmicroreplicationabrasivebelthaschangedthewayofabrasivepart-i

cleadheringonthesubstratebeltandaddedabrasiveagentontheabrasivebelt,whichcanimprovetheabrasiveefficiencyandextendtheservicelife.KeyWords:AbrasiveMaterials,Nano-Al2Oeramics,M-i3C

croreplicationAbrasiveBelt,InvestmentCastingsAbrasionStrictlyManagingPattern-materialtoPreventtheOccurrenceoftheAshDefectsinWaxPatternXuYunxiang(ChineseUniversityofScienceandTechnology,Hefei,China)2005,25(10)618~619

AbstractResinsbasepatternmaterialsforsolsilicatemoldshellininvestmentcastingwillleadtotheirregularcavityincastingssurfaceduetotherepetitivereclamationresultingintheove-rstandardofash

contentinpatternmaterials.Itispointedoutthatpatternmaterialsshouldavoidbeingpollutedbypowderashandsandparticlebyanymeansduringpattern-makinganddewaxing,anddepositiontempera-tureandtimeshouldbeproperlyincreasedduringreclamationofpa-tternmaterialswithstaticdeposition.Inaddition,rationalgatingsystemcanbehelpfultoreducingtheash-inclusioninwaxpatternKeyWords:ResinsBasePatternMaterials,WaxPattern,Pa-tternReclamation

ANewTechnologyofMixedBinder-SodiumSilicateCompoundMoldShellforInvestmentCastingLuoShouxinShengYuhaiLiuYounian(WuhanResearchInstituteofMachineryTechnology,Wuhan,China)2005,25(10)620~622

AbstractThemixedbinder,whichiscomposedofethylsilicatesolu-tion,solsilicateandactivealcohol,wasappliedforonetothreelayersofmoldshellswhilethesodiumsilicatebinderwasappliedforrein-forcedlayer.Themixedbinderforshellmakinghastheadvantagesasfollows:itdosentneedNH4chemicalhardeningandhasfasterdry-ingtimethansolsilicate,whichislowthan1hourindryingtimeoflayers.Usingthemixedbindercanshortentheshellmakingperiod,improvethequalityoftheinvestmentcasting,improvetheworkcon-dition,andreducethecircumstancepollutionandproductioncost.KeyWords:EthylSilicate,SolSilicate,SodiumSilicate,Alcohol,MoldShellforInvestmentCastingProgressinLostFoamCastingatHomeandAbroadChenYao-jianHuangTianyouKangJinwuZhangJia(TsinghuaUn-iversity,Beijing,China)2005,25(10)623~626

AbstractMostinterestedresearchfieldsinlostfoamcastingisfo-cusedonaluminumandmagnesiumalloy,theirdefectsformationmechanism,foampatternmakingandqualitydescription,whitezonepatternmaking.Theseresearchesindicatethatthepatternwithlowfusiondegreeincenter,highfusiondegreeinsurface,anduniformdensityandsmoothsurfacearesuitablefortheproductionofhighqualitycastingsinlostfoamcasting.Inaddition,Xray,SEMandnu-mericalsimulationhavebeenemployedtotheestimationandpredic-tionofbeadfillingmold,patternmakingandqualityoffinishedpa-ttern.

KeyWords:LostFoamCasting,A-lMgAlloy,PatternQualityIncubationandFadingofRefiningEffectsonHypoeutecticA-lSi

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AlloyLiShuangshouTangJinglinZengDabenWuHan-qi2LShuo2(1TsinghuaUniversity,Beijing,China;2DiecastWheelManufacturingLimitedCompany,Qinhuangdao,China)2005,25(10)627~629

AbstractByobservingthechangeofgrainsizeofA356alloyduringholing,theincubationandfadingofrefinementonhypoeutecticA-lSi

alloywereresearched.Incubationofrefinementisresultedfromlowso-lutesupercoolingdegreeduringearlystageofrefinement.Withthear-gumentofthemeltsupercoolingdegreecausedbysoluteTiincrease,morenucleatedparticlesareactivatedtorestrainthegrowthofden-drite.Afterlongholdingtime,althoughthecontentofrefiningelementTiisntchanged,refinementeffectisfadeduetotheseriouscompos-i

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  本文关键词：国内外消失模铸造技术研究新进展，，由笔耕文化传播整理发布。