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外文翻译--冷冲模具使用寿命的影响及对策.doc

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外文翻译--冷冲模具使用寿命的影响及对策.doc

DIELIFEOFCOLDSTAMPINGDIEANDIMPROVEMENTSOVERVIEWOFSTAMPINGDIESTAMPINGDIESTAMPINGINTHECOLD,THEMATERIALMETALORNONMETALLICPROCESSINGINTOPARTSORHALFOFASPECIALTECHNICALEQUIPMENT,CALLEDCOLDSTAMPINGDIECOMMONLYKNOWNASDIEPRESSISATROOMTEMPERATURE,USINGTHEDIEINSTALLEDINTHEPRESSTOPUTPRESSUREONTHEMATERIALTOPRODUCEASEPARATIONORPLASTICDEFORMATION,ANDTHUSTOOBTAINTHENECESSARYPARTSOFAPRESSUREPROCESSINGMETHODSTAMPINGDIEINTHEFORMOFMANY,THEGENERALCATEGORIESACCORDINGTOTHEFOLLOWINGMAINFEATURES1ACCORDINGTOTHETECHNICALNATUREOF1DIEALONGTHECLOSEDOROPENCONTOURTHEMATERIALAREDERIVEDFROMMOLDIFBLANKINGDIE,PUNCHDIE,CUTOFFTHEMOLD,CUTMODE,CUTTINGMODE,SPLITMODE,ETC2BENDINGMODETOBLANKORBLANKSHEETALONGASTRAIGHTLINECURVEDLINETOBEND,DEFORM,ANDTHUSOBTAINACERTAINANGLEANDSHAPEOFTHEWORKPIECEINTHEMOLD3THEDRAWINGDIEISMADEOFTHEBLANKSHEETOPENINGHOLLOW,ORHOLLOWPIECESOFFURTHERCHANGESTOTHESHAPEANDSIZEOFTHEMOLD4DIEROUGHORSEMIFINISHEDWORKPIECEISCONVEXACCORDINGTOPLAN,DIRECTCOPYTHESHAPEOFTHEDIESHAPE,THEMATERIALITSELF,GENERATEONLYLOCALPLASTICDEFORMATIONOFTHEMOLDSUCHASTHEBULGINGMODE,REDUCINGTHEDIE,EXPANSIONDIE,FORMINGDIEROLLING,FLANGINGMOLD,PLASTICMOLD2ACCORDINGTOTHEDEGREECLASSIFICATIONPROCESSCOMBINATION1SINGLEPROCESSMODELINAPRESSTOUR,JUSTCOMPLETEDADIESTAMPINGPROCESS2COMPOSITEMODELISONLYONESTATION,INAPRESSTOUR,ATTHESAMESTATIONATTHESAMETIMETOCOMPLETEMORETHANTWOORTWODIESTAMPINGPROCESS3PROGRESSIVEDIEALSOKNOWNASTHEMODULUSOFCONTINUITYINTHEFEEDINGDIRECTION,ROUGH,WITHTWOORMOREOFTHESTATION,ATTHEPRESSOFAVISIT,WORKINDIFFERENTPLACESONTHECOMPLETIONOFTWOORTWOSUCCESSIVEROADOVERSTAMPINGDIEPROCESSCHONGCALLEDCOLDSTAMPINGDIEDIEWIDECOLDSTAMPINGDIEISUSEDINCOLDSTAMPINGDIEMOLDINDUSTRY,ANDACCESSORIESREQUIREDFORHIGHPERFORMANCESTRUCTURALCERAMICMATERIALS,PREPARATIONMETHODS,HIGHPERFORMANCECERAMICMATERIALS,MOLDSANDACCESSORIESFROMTHEZIRCONIUMOXIDEANDYTTRIUMALUMINUMPOWDERINCREASES,PRELEMENTCOMPOSITION,PREPARATIONISTHESOLUTIONOFZIRCONIA,YTTRIASOLUTION,PRASEODYMIUMOXIDESOLUTION,ACCORDINGTOACERTAINPERCENTAGEOFALUMINASOLUTIONWHENMIXEDLIQUOR,AMMONIUMBICARBONATEINFUSION,BYCOPRECIPITATIONSYNTHESISOFCERAMICMATERIALS,MOLDSANDACCESSORIESNEEDEDFORRAWMATERIALS,REACTIONPRECIPITATEGENERATEDBYTHETREATMENT,DRYING,CALCININGANDACCESSORIESBYHIGHPERFORMANCECERAMICMOLDMATERIALSUPERFINEPOWDER,ANDTHENAFTERFORMING,SINTERING,FINISHING,THEYWILLHAVEHIGHPERFORMANCECERAMICMATERIALS,MOLDSANDACCESSORIESADVANTAGESOFTHISINVENTIONISTHEINVENTIONMADEOFCOLDSTAMPINGDIESANDPARTSANDLONGSERVICELIFE,THEPROCESSDOESNOTAPPEARINTHEPRESSANDITSPARTSANDSTAMPINGDIEBONDGENERATEDTHEPHENOMENONOFSTAMPINGSURFACEISSMOOTH,NOGLITCHES,CANREPLACETRADITIONALHIGHSPEEDSTEEL,TUNGSTENSTEELDIEWITHTHEMAINPARTSDIESTAMPINGTOOLSISTHEMAINPROCESSEQUIPMENT,STAMPINGRELYONTHERELATIVEMOVEMENTUNDERTHEMOLDCOMPLETEDPROCESSINGTIMEBECAUSETHEUPPERANDLOWERMOLDBETWEENTHECONSTANTDIVISIONAND,IFCONTINUEDOPERATIONOFTHEFINGERSOFWORKERSTOENTERORREMAININTHEMOLDCLOSED,THEREWILLCERTAINLYPOSEASERIOUSTHREATTOTHEIRPERSONALSAFETYAOFTHEMOLDMAINPARTS,FUNCTIONANDSAFETYREQUIREMENTS1WORKINGPARTSISADIRECTPUNCHTOBLANKFORMINGTHEWORKINGPARTS,THEREFORE,ITISTHEKEYTOMOLDPARTSPUNCHNOTONLYSOPHISTICATEDANDCOMPLEX,ITSHOULDMEETTHEFOLLOWINGREQUIREMENTS1BEOFSUFFICIENTSTRENGTH,CANNOTBEBROKENORDESTROYEDDURINGSTAMPING2SHOULDBEAPPROPRIATETOITSMATERIALANDHEATTREATMENTREQUIREMENTS,TOPREVENTTOOHIGHHARDNESSANDBRITTLEFRACTURE2POSITIONINGPARTSPOSITIONINGPARTISTODETERMINETHELOCATIONOFTHEPARTSINSTALLEDBLANK,THEREAREPINSBOARD,GAUGEPINPLATE,LEADISSOLD,GUIDEPLATE,KNIFESETFROMTHESIDE,SIDEPRESSUREETCDESIGNSHOULDBECONSIDEREDWHENPOSITIONINGPARTSEASYTOOPERATEANDSHOULDNOTHAVEHADORIENTATION,LOCATIONTOFACILITATEOBSERVATION,PREFERABLYINTHEFORWARDPOSITION,CONTOURINGTOCORRECTTHEPINLOCATIONANDPOSITIONING3BINDER,UNLOADINGANDDISCHARGINGPARTSBINDERCOMPONENTSAREBLANKHOLDER,BINDERBOARDBLANKHOLDERPRESSURECANDRAWINGBLANKHOLDERFORCE,THEREBYPREVENTINGBILLETSUNDERTHEACTIONOFTHETANGENTIALPRESSUREARCHFORMEDFOLDSTHEROLEOFPRESSUREPLATETOPREVENTMOVEMENTANDBOUNCEBLANKTOPOFTHEDEVICE,DISCHARGEBOARDSROLEISTOFACILITATETHEPIECESANDCLEANUPWASTETHEMBYTHESPRING,RUBBERANDEQUIPMENT,PUTTINGONTHEAIRCUSHIONSUPPORT,CANMOVEUPANDDOWN,KNOCKINGOUTPIECESOFTHEDESIGNSHOULDHAVEENOUGHTOPOUTPUT,MOVEMENTTOTHELIMITEDSPACESSTRIPPERPLATEAREASHOULDBEMINIMIZEDORCLOSEDPOSITIONINTHEOPERATINGGROOVEMILLINGOUTEMPTYHANDEDEXPOSUREOFTHESTRIPPERPLATESHOULDHAVEPROTECTIONAROUNDTHEPLATE,TOPREVENTFINGERINSERTEDINTOORFOREIGNOBJECTSINSIDE,EXPOSEDSURFACEEDGESSHOULDBEBLUNTDOWN4GUIDEPARTSANDGUIDESLEEVEGUIDEPINISTHEMOSTWIDELYUSEDPARTOFAGUIDEITSROLEISTOENSUREPUNCHTHEPUNCHINGCLEARANCEWHENACCURATEMATCHTHEREFORE,THEGUIDEPOSTS,GUIDECOVERTHEGAPSHOULDBELESSTHANTHEBLANKINGCLEARANCEGUIDEPOSTLOCATEDNEXTMOLDBASE,TOENSURETHATTHESTROKEBOTTOMDEADCENTER,THELEADCOLUMNINTHETEMPLATEONTHEFACEOVERTHETOPFORATLEAST5TO10MMGUIDECOLUMNSSHOULDBEARRANGEDFARAWAYFROMTHEMODULEANDTHEPRESSUREPLATEINTHEAREA,SOTHEOPERATORSARMSDONOTGETTOTAKEOVERTHELEADCOLUMNMATERIAL5SUPPORTINGANDCLAMPINGTHEUPPERANDLOWERPARTSWHICHINCLUDESTEMPLATES,DIEHANDLE,FIXEDPLATEPUNCH,PLATE,STOPPER,ETCLTHOUGHCHINADIEWITHTHEINDUSTRYOVERTHEPASTDECADEHASMADEREMARKABLEDEVELOPMENT,BUTINMANYWAYSCOMPAREDWITHTHEINDUSTRIALIZEDCOUNTRIESTHEREISSTILLALARGEGAPFOREXAMPLE,THEPRECISIONMACHININGEQUIPMENT,PROCESSINGEQUIPMENTINDIEWITHTHERELATIVELYLOWPROPORTION;CAD/CAE/CAMTECHNOLOGYPENETRATIONISNOTHIGH;MANYADVANCEDMOLDTECHNOLOGYNOTWIDELYSO,RESULTINGINACONSIDERABLENUMBEROFLARGE,SOPHISTICATED,COMPLEXANDLONGDIELIFEWITHDEPENDENCEONIMPORTSWITHTHECONTINUOUSPROGRESSOFSCIENCEANDTECHNOLOGY,MODERNINDUSTRIALPRODUCTIONOFINCREASINGLYCOMPLEXANDDIVERSE,PRODUCTPERFORMANCEANDQUALITYISEVERINCREASING,THUSTHECOLDSTAMPINGTECHNOLOGYPUTFORWARDHIGHERREQUIREMENTSINORDERTOADAPTTOTHECOLDSTAMPINGTECHNOLOGYINDUSTRYNEEDS,COLDSTAMPINGTECHNOLOGYITSELFALSOININNOVATIONANDDEVELOPMENTCOLDSTAMPINGTECHNOLOGYIDEAISTOIMPROVEANDEXPANDASMUCHASPOSSIBLETHEADVANTAGESOFTHECOLDSTAMPINGPROCESS,TOOVERCOMEITSSHORTCOMINGSINTHECOLDSTAMPINGTECHNOLOGYDEVELOPMENT,SHOULDNOTETHEFOLLOWINGASPECTS1COLDSTAMPINGTECHNOLOGYPROCESSPARAMETERSSHOULDBEPROPERLYIDENTIFIEDANDDIEWITHTHEWORKOFSOMEOFTHESHAPEANDSIZE,TOIMPROVETHEQUALITYOFSTAMPINGPARTSANDSHORTENTHENEWPRODUCTPRODUCTIONCYCLESHOULDBEINSTRENGTHENINGTHEMETALFORMINGTHEBASISOFTHEORETICALSTUDIES,TOMETALFORMINGTHEORYTOPRACTICECANPRODUCEADIRECTION,ANDGRADUALLYESTABLISHACLOSECONNECTIONWITHTHEACTUALPRODUCTIONOFTHEADVANCEDPROCESSOFCALCULATIONABROADHAVEBEGUNTOUSEPLASTICFINITEELEMENTMETHOD,AUTOMOBILEPARTSFORMINGPROCESSOFTHESTRESSANDSTRAINANALYSISANDCOMPUTERSIMULATIONTOPREDICTTHEFORMINGPARTOFAPROCESSPLANONTHEPOSSIBILITIESANDPOTENTIALPROBLEMS2TOACCELERATEPRODUCTREPLACEMENT,MOLDDESIGNTOOVERCOMETHESHORTCOMINGSOFALONGCYCLESHOULDVIGOROUSLYCARRYOUTCOMPUTERAIDEDDESIGNANDMANUFACTUREOFMOLDSCAD/CAMRESEARCHINMYCOUNTRY,PAYINGPARTICULARATTENTIONTOSTRENGTHENINGTHEMULTIPOSITIONPROGRESSIVEDIECAD/CAMTECHNOLOGY3TOMEETTHENEEDSOFMASSPRODUCTION,ANDREDUCELABORINTENSITYSHOULDSTRENGTHENCOLDSTAMPINGOFMECHANIZEDANDAUTOMATED,SOTHATTHEAVERAGE,SMALLPIECESOFHIGHSPEEDPRESSESINAMULTIPOSITIONPROGRESSIVEDIEPRODUCTION,PRODUCTIONREACHEDAHIGHDEGREEOFAUTOMATIONTOFURTHERIMPROVESTAMPINGPRODUCTIVITY4EXPANDTHESCOPEOFAPPLICATIONOFCOLDSTAMPINGPRODUCTIONSOCOLDPRESSINGBOTHSUITABLEFORMASSPRODUCTION,BUTALSOFORSMALLBATCHPRODUCTION;BOTHTHEGENERALACCURACYOFPRODUCTPRODUCTION,BUTALSOCANPRODUCEPRECISIONPARTSSHOULDPAYATTENTIONTODEVELOPMENTSUCHASFINEBLANKINGESPECIALLYTHICKMATERIALFINEBLANKING,FORMINGHIGHENERGY,SOFTMOLDFORMING,PRESSUREANDPROCESSINGNEWSUPERPLASTICFORMINGPROCESS,BUTALSOPROMOTETHEEASYMODESOFTMODEANDTHELOWMELTINGPOINTALLOYMOLD,UNIVERSALHYBRIDMODEL,THEUSEOFCNCPUNCHPRESSANDOTHEREQUIPMENTINADDITION,THEPERFORMANCEIMPROVEMENTOFSHEETMETALSTAMPING,MOLDNEWMATERIAL,DIEDEVELOPMENTOFNEWPROCESSINGMETHODSSHOULDBEFURTHERSTRENGTHENEDDIEWITHLIFEANDCOUNTERMEASURESDIEWITHTHELIFEOFTHEWORKPIECEBYPUNCHINGOUTTHENUMBEROFTERMSMANYFACTORSAFFECTTHELIFEDIETHEREAREDIESTRUCTUREDESIGN,MANUFACTUREMOLDSUSEDINTHEPUNCHANDDIEMATERIALS,DIEQUALITYANDSURFACEHARDENINGHEATTREATMENT,PRECISIONDIEMANUFACTURINGPARTSANDCOLDSTAMPINGMATERIALSSELECTIONINADDITION,THEREAREDIEINSTALLATION,ADJUSTMENT,USEANDMAINTENANCE1DIEDESIGNONLIFE1LAYOUTDESIGNOFLAYOUTMETHODSANDTAKETHEBOUNDARYVALUEAGREATIMPACTONTHEDIELIFE,TOOSMALLTOTAKETHEBOUNDARYVALUE,OFTENCAUSINGRAPIDWEARANDCONVEXMOLD,DIEBITEWOUNDSONTHESTARTINGFROMMATERIALSAVINGS,TAKETHEBOUNDARYVALUESMALLERTHEBETTER,BUTTAKETHEEDGEISLESSTHANSOMEVALUE,THECUTSURFACEOFTHEMOLDANDTHEQUALITYOFLIFEADVERSELYTHEREWILLBELEFTBEHINDINTHEBLANKINGDIEQGAPWERETOPRODUCESPAREPARTSGLITCH,OREVENDAMAGETHEDIEEDGE,REDUCEDIELIFETHEREFORE,CONSIDERINCREASINGTHEMATERIALUTILIZATIONOFTHESAMETIME,PARTSMUSTYIELD,QUALITYANDLIFEEXPECTANCYTODETERMINETHELAYOUTMETHODSANDTAKETHEBOUNDARY2DIESTRUCTUREPRONETOSTRESSCONCENTRATIONONTHECRACKINGOFTHEDIESTRUCTURE,COMPOSITESTRUCTURECANBEUSEDORMOSAICSTRUCTURE,ANDPRESTRESSEDSTRUCTURETOENHANCETHEMOLDLIFE3THEIMPACTOFCLEARANCEWHENTHEGAPISTOOSMALL,COMPRESSEDEXTRUSIONOFINTEREST,INCREASEDFRICTION,INCREASEDWEAR,THEWEARSIDEOFAGGRAVATEDDISCHARGEANDPUSHPIECESAFTERBLANKINGTIME,MATERIALSANDCONVEX,THEFRICTIONBETWEENDIEWILLCAUSEWEARANDTEARTHANTHEENDEDGEONTHESIDEOFTHEGRINDINGMUCH,BUTALSOEASILYLEADTOCONVEX,CONCAVEMOLDTEMPERATUREISHIGH,THEADSORPTIONOFMETALDEBRISINTHESIDEEDGETOFORMAMETALTUMOR,SOTHATMALEANDFEMALEDIECHIPPINGOREXPANSIONOCCURSCRACKPHENOMENONTHEREFORE,THEGAPISTOOSMALLTODIELIFEVERYBADGAPISTOOLARGEWILLINCREASETHEPUNCHANDTHEDIEFACETHEEDGEOFTHECONCENTRATIONOFSTRESS,RESULTINGINASHARPINCREASEINSTRESS,SOBLADEEDGEQUICKLYLOSEANGULARYIELDDEFORMATIONTHEREFORE,ADDITIONOFBLANKINGFORCE,THEREBYENABLINGFASTEREDGEEDGEWEAR,REDUCEDIELIFEBUTINORDERTOREDUCETHEMALEANDFEMALEDIEWEAR,EXTENDINGMOLDLIFE,WHILEENSURINGQUALITYOFSTAMPINGPIECESUNDERTHEPREMISETHATLARGERSPACEDESIGNEDPROPERLYITISNECESSARY4DIEORIENTEDSTRUCTUREOFTHELIFEOFARELIABLEGUIDEFORTHEWORKINGPARTSREDUCEWEAR,PREVENTMALEANDFEMALEDIEBITEWOUNDISVERYEFFECTIVEINPARTICULAR,NONSMALLQGAPQGAPORDIE,COMPOUNDDIEANDMULTIPOSITIONPROGRESSIVEDIEEVENMOREIMPORTANTTOIMPROVETHEDIELIFE,MUSTBEBASEDONPROCESSESANDTHEDEMANDOFPRECISION,THECORRECTCHOICEORIENTEDFORMANDORIENTATIONACCURACY,THECHOICESHOULDBEHIGHERTHANTHEACCURACYORIENTEDCONVEX,CONCAVEMOLDWITHPRECIS

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