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外文翻译-压铸工艺及压铸模具设计要点.doc外文翻译-压铸工艺及压铸模具设计要点.doc -- 5 元

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外文资料翻译系别XXXXXXX专业XXXXX班级XXXX姓名XXX学号XXXXX指导教师XXXXXX2010年4月1CompressioncastingcraftandcompressioncastingmolddesignmainpointAbstractThediecastingmachine,themoldandthealloythree,takepressthecastingasthis,amongthecompressioncastingcraftpenetration,theirconformityisorganicallyaeffectivesystem,causesthediecastingmachineandthemoldobtainsthegoodmatch,playstheoptimizationtopressthecastingstructure,theoptimaldiecastingmachine,theoptimizationpressesthemolddesign,enhancesthecraftoperatingpointtheflexiblerole,thusprovidesthereliableguaranteeforthecompressioncastingproduction.Therefore,thecompressioncastingcraftlieswithininthemoldsaying,depthoftheconnotationisselfevident.KeywordDiecastingmachineMoldCompressioncastingcraftThemolddesigns1.DiecastingmachinemoldalloysystemDiecastingmachine,themoldandalloythesethreefactors,inpressesinthecastingproductionprocess,theyconstitutedasystem,namelythediecastingmachinemoldalloysystem,itistakepressesthecastingasthis,amongthecraftpenetration,entrustswiththesystemvigorandtheefficiency,butthemoldisthecraftentersthesystemtheplatform.Thediecastingmachine,themoldandthealloythreerelationsexpressedvividlyasshowninFigure1.Thediecastingmachinemoldalloysystemmainperformanceis1Ingatepositioninfluencebackfillmetalmeltflowdirectionandthecondition,withthebackfilldiespacequality,havethedecisiveinfluencetothemoldstructureandthecraft,thisisthekeyisat.2Designationbestsufficienttime,thisisextremelyimportantonestep,affectstosufficienttimemetalmeltrateofvolumeflowQ,alsoisthesufficientpower,accordingtotheaboveandcomputationingatesize.3Choiceexhaust,overflowpositionandsize,exceptoutsidenormalexhaust,pollutiondischargeandtemperaturebalance,butalsomayreducetheimpactpressure,avoidsthemetalsplashingandproducingtheburr.4Heatingandcooling,balancedmoldtemperature,maintenanceoperatingtemperature.2.CompressioncastingcraftsandthemolddesignkeytechnologiesWhencompressioncastingtheingatepositioninfluencepressesthecastingthestructuraldesign,thequalityandthecompressioncastingmolddesign,mayobtainthecorrectestablishmentingatepositionpromptthroughtheinquirymaterial.Asaresultofthecastingstructuremultiplicity,mustchoosetheingatethecorrectpositionisvery2difficult,butalsohassomebasicrequests,likethoughtgenerallytheestablishmentingatemustcausesufficientwhenthemetallicjethasasfaraspossiblecomparedthelongdistancebytheopenjetinthediespaceaverage,alsoisthecorrectingateposition,theshape,thesizeflowstoangletocoordinatethecompressioncastingparametertobepossibletoobtainthemetallicjettoexpandalongthewallunceasingorder,tochange,andcontinuouslyexpandstotheterminus.Thediespacemajorityi.e.branchdiespacecompletesbythejetflowbackfill,onlythenasmallpartofdiespacei.e.nonbranchdiespacebythemetalmeltbranchsupplementedcompletesorcollidesbythemetalmeltstockclasscompletesthebackfill,andoverflowsthesystemeliminationvestigesthroughtheplatoon.Figure2isinthepouringpositionandbranchdiespaceschematicdrawing1.Theidenticalpressurecastingchoicedifferentingatepositionandflowstotheangle,whenmayobtaintheareapercentagewhichthedifferentbranchdiespace,thenonbranchdiespaceandholdrespectively,Figure2theshellcompressioncasting,becausetheingatepositionisdifferent,obtainsthedifferentbranchdiespaceandthenonbranchdiespace.Thechart2aingateisverticaltoonesidewall,becausethecomponentscrownlongsquareedgedorificeseparatestwosidewalls,theresultisonlythenonesideforthebranchdiespaceMustfillanotheronesidewall,mustpassthroughtherunningchannelbothsidesattachmentpoint,thefinaltwoliquidflowgatheringcompletesthepacking,thispartisthenonbranchdiespace.Becausethebranchdiespaceaccountsfortheareapercentagenottobehigh,thereforecanproducethemassivewasteproducts,likechart2a1.Inchart2b,theingatepositiondoesnotmakethechange,onlyiswallthicknessandsooncrownrectangleKongYongcraftmusclesconnects,likethisfillswhenthemetalmeltchanges,fillsanotheronesidewallalongthemuscleboard,causedtwosidewallsbothtobecomethebranchdiespace,increasedthebranchdiespacetoaccountforthepercentage,thecastingqualityalsolargescaleenhances,likechart2b1.Inchart2c,thecomponentsandchart2aaresame,thecrownsquareedgedorificedoesnotaddthecraftmuscle,butestablishestheingateinacomponentsend,suchmetalmeltsimultaneouslycarriesonthebackfillfromtwosidewalls,thusexpandedthebranchdiespacepercentage,hadguaranteedthequality,enhancedthequalifiedrate.Thisistheidenticalcomponentsthreekindofingateestablishmentplan,theproofingatepositioncrucialnature.Althoughthecomputertechnologyishelpfultothedesignationingateposition,butthecomputertechnologyisonlyonemethod,buttheingatepositiondesigndidnotlosewasstillakeytechnologies.Between3compressioncastingcraftmainpoint3.1metalpressures,thespeedandthecurrentcapacityrelationsIntheprinciplethediecastingmachinearealiquidmetalpump,ittransportsunderthepressurethemetalmelttothecompressioncastingmodelcavityin.Thepumpcharacteristicistransportsthepowerrateofvolumeflow,isthepressurefunction,thisaspectasearlyasinthe70s,firstmakesthevaluabledevelopmentwork3byAustralianAsiaCSIRO,hasestablishedausefultoolwiththepQ2chart,accordingtothecastingi.e.moldrequest,decidedthemachinetheadjustmentvalue,isoriginallyusesinthehotcelldiecastingmachinethezincbasealloypressinginthecasting,butveryquickexpandstoLengShijion.Inprinciple,nowthepressureandtherateofvolumeflowrelationswhichknewverywellfromthehydromechanicsprinciple,shiftstothediecastingmachinepracticalapplication.Themetalpressureishigher,isalsoquickerinthespraynozzleandtheingateplacemetalmeltflowrate,butalsomustconsidervictoryflowresistancewhichasaresultoftheflowingsectionchange,thedirectionchangeandthewallroughnessexistenceproduces,xiexpressessumofthetheseresistancewiththefrictioncoefficient.Iftheknownimmeasurablesteelcoefficientxi,maycalculatethemetalpressurewhichcertainingatespeedneeds,accordingtothecompressioncastingalloyandthecastingrequest,theingatespeedhasanempiricalvalue,shouldobserve,seeTable1,thereforeneedsthediecastingmachinetoprovidethecorrespondingspeed.Table1ingatespeedselectionTable1ChoiceofvelocityatingateProjectA1MgCuZnυam.s12560409030453050Thelowvalueusesintherelativelythickcasting,thehighvalueusesintherelativelythincasting,commonmagnesiumalloycastingingatespeedcomparedtoaluminumhigh25.Timethevacuumdiecastingingatespeedis1530m/s.3.2Takethecastingasthis,optimizesthediecastingmachinemoldalloysystem,enhancesthecraftflexibilityInthediecastingmachinemoldalloysystem,throughtheadjustmentcraftparameter,mayimprovepressesthecastingthequalityandtheperformance.ThesecraftparameterdefinedwithworkwindowOW.ThisindicatedOWisthesecraftparameterlimitchart.Inthecompressioncastingcraft,thesufficienttime,theingatespeedandthefinalmetalstaticpressureusetodefineOW,theseparametersandsufficientphenomenonrelated,reliesoninthemolddesignandthediecastingmachineperformance.Designswhenthemold,inOWallspotswereconsideredallisequal,anddoesnothavethepriority,maythinkthebestoperatingpointexistsinOWunknownlights,inpressesthemoldinstallsonthediecastingmachineinfrontoftheexperimentalmoldisunabletofindit.Inthemolddesignstageguaranteedeasytofindthegoodoperatingpointisbasedontheflexibleconsideration,theflexibilityisobtainsinOWthroughtheadjustment.Therefore,dividesintothecraftparameterthesoftparameterandthehardparametertwokinds,thesoftparameterisrefersthroughtheoperationoracontroldevicecarriesontheadjustmenttheparameter,likeparametersandsoonpowerlevel,
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