冲压模具外文翻译影响冲压模具寿命的因素分析.docx

冲压模具外文翻译影响冲压模具寿命的因素分析.docx

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冲压模具外文翻译影响冲压模具寿命的因素分析

附录

ThestudyofInfluencefactorsondies'life

Becausetherammingprocessinghastheproductivitytobehigh,thematerialusefactorishigh,thepressingpartprecisionhigh,thecomplexdegreeishighandinterchangeabilitygoodandsooncharacteristics,therefore,intheindustrialproduction,appliesespeciallyintheproductioninenormousquantitiesverywidely.Buttherammingmoldinthecoldstampingprocessingisalsoessential.Therammingmoldgeneralstructureiscomplex,theaccuracyrequirementishigh,theproductioncostisalsohigh.Intherammingprocess,therammingmoldasaresultoflong-termreasonsandsoonattrition,distortion,breakhastheexpiration,thuscausestheenterpriseproductioncosttostayatahighlevel.Therefore,theexplorationenhancestherammingmold'sservicelifeefficientpathtohavetheimportantmeaningregardingtheenterprisedevelopment。

1Theinfluencerammingdielife'sprimaryfactortoenhancetherammingdielife,musttothemoldwhichexpirescarryontheanalysis,understandsandgraspstheexpirationreasonandtheinfluencedielifeprimaryfactor.Throughtheresearchdiscovery,affectstherammingdielifetheprimaryfactortohavethefollowingseveralaspects:

1.1Moldmaterial

（1）moldmaterialsmeltingifthequalityofdiesteelcontainsmoreobjectsortoomuchcarbonsteel,willseriouslyreducetheimpacttoughnessofsteel,anti-fatigueandfractureresistance,causinganearlyfracturedie,blocksandcracking,etc.collapse.

（2）moldmaterialintheheatdiemachiningprocessmustbecarriedoutinthequenchingandtemperingheattreatmentandsoon.Thelevelofheatingtemperature,thelength,thesizeofthecoolingrate,theprotectionmeasures,suchasthechoiceofprocessparameterswillaffectthedielife.（3）theperformanceoftheworkpiecematerialhardnessofvariousmaterials,strength,wearresistance,corrosionresistance,plasticdeformationresistance,fractureresistance,fatigueresistanceandotherpropertiesofhotandcoldaredifferent,differentpropertiesoftheprocessofstampingtheworkpiecematerialtheimpactofthepressaredifferent,suchasthestampingoftheworkpiecematerialhardnesswillspeedupandincreasethewearandtearmold;stampingpartshardwareandstickymaterial（suchasstainlesssteel）whenheatinglarge,easy-stickmold,clean-upwillnotbetimelyspeedupthediewearandreducetheservicelifeofmolds.Thereforemoldmaterialmustbebasedontheselectionoftheworkpiecematerial.

1.2Diestructure

（1）dieformofdiestructureofthestructureisbasedontheshapeofstampingpartstothedesignofthesamestamping,moldcanformaverywiderangeofchoices,ifthemoldstructureisirrationalandthestressconcentrationmayleadtofracturefailure.

（2）stampingpartsstampingpartsoftheshapeoftheshapeofmorecomplexstructureswillbemorecomplexmolds,stampingdieswhenthelocalincreasewearandtearordeformation,damage,willreducethelifeofmold.

（3）parametersDieBlankingDiesparameterspace,punchingpower,discharge,andupboundaryvalue,etc.,whichblankingdiegapoflifemostaffected,suchasareasonablespace,longlifemolds;gapistoolargeortoosmall,willreducedielife.

（4）DieDie-orientedagenciesagenciesornon-orientedlow-precision-oriented,rigidpoorwillaggravatethediewearandreducedielife.

1.3Ifthepresssituationinlow-precisionpress-oriented,poorstiffness,highincidenceofeatingmold-modeandspeedupthewearandtearonthelifeofagreatimpactonmold.

1.4Useandmaintenanceofmoldsincludingmoldinstallation,transportation,preservationandmaintenanceoflubricants,suchastheuseandoperation.

2Improvethestampingdielifeinaneffectivewayofstamping,thedieservicelifeofhigh-modeedgecanreducethenumberofrepairandinstallationtimedebuggingtooltoincreasetheeffectiveworkinghoursandraiselaborproductivity,reducecostofproductionstampings.

Lifeofstampingdiesfortheimpactofthemainfactors,therearethefollowingtypesofstampingdiestoenhanceaneffectivewayoflife

2.1Selectionofasuitablewear-resistantmaterialsingeneral,inthestampingproductionstampingpartsaccordingtomaterialandtechnicalrequirements,productionbatchsize,thepremiseofensuringtheeconomyasfaraschoiceofmaterialswithhighwearresistanceandthenecessaryheattreatmentprocess.

Moldmaterialscommonlyusedare:

（1）Cr12steeltypes,includingCr12Mo,Cr12MoV:

coldstampingdieforawiderrangeofalloytoolsteel,hasahighhardenability,hardenedandwear-resistantability.

（2）Cr4W2MoVsteel（thatis,120Cr4W2MoV）:

thismaterialwithCr12steeltypes,comparedtosmalleutecticcarbide,andamoreevendistribution,haveahighhardenability,hardening,andalsohashighermechanicalpropertiesandwearresistance.W,Mo,Velementshelptoimprovethestabilityofsteelfortheuseofchemicaltreatmenttoimprovedielifeconditionsprovideafavorableenvironment.

（3）W6Mo5Cr4V2Alsteel:

highhardness,canbehardenedtoHRC66~68,wearresistance,andalloysteelthantheaveragelifeexpectancyofthemoldcanincreasemorethan4times.Redsystemforwearandtearonthemoldparticularlymaterialssuchasnickelchromiumtitanium,fiberboardandothermaterialslaminatedglass.

（4）carbide:

highhardness,canreachmorethanHRC85.Excellentwearresistance,hardalloydielifetoolsteeldiethantheaverage30～50times.WiththeCNCwirecutting,EDMprocessingmethods,suchasawiderangeofapplications,thescopeofapplicationofcarbidemoldgrowing.Ofcourse,thebetterthewearresistanceofdiematerials,thegeneralpricesofthemoreexpensivematerials,processingcostsarealsohigher,sowhentheeconomyisalsoaselectiontooneoftheimportantfactorstoconsider.

2.2DieMoldSurfaceTreatmentSurfaceTreatmentincludescremationstrengthenandchemicallyenhancedintwoways.

（1）strengthentheEDMEDMisenhancedcarbideconductivematerial,suchaselectrodes,andmetalintheairsparkdischargebetweentheworkpiece,theuseofsparkdischargeenergyrelease,sothatinfiltrationofelectrodematerial,coveringthesurfaceofthemoldtoformastrengtheninglayer.EDMhasimprovedtheworkofstrengtheningofthephysico-chemicalpropertiesofthesurfacetoimprovethemetalsurfacehardness,wearresistance,corrosionresistance,moldlifecanbeextended2to3times.Enhancedsurfacehardnessupto68~72HRC.

（2）chemicallyenhancedarechemicallyenhancednitridingprocessing,handlingboronizing.Nitridingtreatmentofliquidnitriding,gasnitridingandplasmanitridingglow.Metalsurfacenitridingthroughtheformationofhardnitridelayer,thehardnessofupto65~69HRC,nitridingthesurfacewithhighhardness,wearresistance,heatresistance,highfatiguestrengthandcorrosionresistance.Nitridingfordielifeimprovementthannon-nitrogen2to3times.Nitridingdepthofupto0.12mm,hardness1200HV.Asaresultofnitridinginthemoldafterthenitridelayerformedonthesurfaceofprotectivefilm,greatlyreducedthefrictioncoefficient,canimprovedielife.Boronizingdealisonthemeltedpartsofborax（Na2B4O7）andsiliconcarbidemixture,toacertaintemperature,afteracertainperiodoftime,inpartsofthesingle-phaseformedonthesurfaceoftheFe2BorFe2BmainlyasmallnumberoftheFeBtwo-phaseboridelayer.Compoundswithatwo-foldhighhardnessandlowfrictioncoefficient,canincreasethewearresistanceandservicelifeofmolds.

2.3OptimizationofDieStructureDesign

（1）toimprovetheworkofdiestructuredesignreliability:

intheproductionofnotpunchingactionisnotinplaceormalfunctionordamagetoreducethedieservicelifeofmolds.Institutionssuchasthefeed,discharge,thetoppiecesofthesystemcomponentsshouldhavesufficientstrengthandrigidity,flexiblemovementandreliable.

（2）diestructureoptimizationofparameters:

thechoiceofstructuralparametersdirectlyaffectthelifeofmold.Suchasblankingclearance,shouldbeusedbytheredpartsrequirementsandmaterialselectionreasonableblankinggapistoolargeortoosmallwillincreasethegapofblankingdiewearandreduceservicelife.

（3）selectionfordifferentmoldstructure-orientedandrationalmannerinordertoimprovedielife.

（4）fromtheareasofdesignandtechnologytoensurethequalityofmoldparts:

Iftheworksurfaceistoorough,thecircularedgeformingmoldsarenotsmoothedgewillincreasetheblankingburr,formingsurfacenap,injury,willspeedupthediewearandreducetheirusefullife.

2.4Theproperuse,maintenanceandmaintenanceofthelifeofMold,withtheexceptionofreasonabledependsonthedesign,themanufactureofhighprecision,goodeffectofheattreatmentandpresstherightselection,thestampingdieproductionoftheproperuse,maintenanceandrepairisalsoimportantingeneralshouldpayattentiontothefollowingpoints:

（1）carefullybeforeusingthemoldinspection,removalofdirt.Therearedie-orienteddevices,lubricationshouldbecheckedsound.

（2）regularmaintenancepresses,pressestoensureaccuracy.Beforeusebyapointoforderonthepresstooperatethatspace.

（3）roughsurfaceshouldbeclean,ifnecessary,canalsobecoatedwithlubricantuniform.

（4）diebytheinstallertoinstall,non-guideplatemoldanddie,itisnecessarytoproperlyadjustthegap.

（5）punchanddieedgewearintimeaftergrindingtopreventtherapidexpansionofthedepthofedgewearandreducethequalityofstampingpartsanddielife.

（6）,whenmass-produced,mediumandsmalldiemusthaveabackup,