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英文原文DIELIFEOFCOLDSTAMPINGDIEANDINFLUENCEDIEWITHTHELIFEOFTHEWORKPIECEBYPUNCHINGOUTTHENUMBEROFTERMSMANYFACTORSAFFECTTHELIFEDIETHEREAREDIESTRUCTUREDESIGN,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,CONCAVEMOLDWITHPRECISION5THEIMPACTOFCOLDSTAMPINGMATERIALS,COLDSTAMPINGMATERIALSSELECTEDSHOULDMEETTHEDESIGNREQUIREMENTSOFWORKPIECESANDSTAMPINGPROCESSREQUIREMENTS,OREASYTOMOLDDAMAGEANDREDUCEMOLDLIFEPOORSURFACEQUALITYOFCOLDSTAMPING,PUNCHING,CRACKINGWHENTHEWORKPIECEISALSOEASYTOSCRATCHMOLDBADCOLDSTAMPINGPLASTICMATERIALS,DEFORMATIONISSMALL,EASYTOPRESSWHENTHEWORKPIECERUPTURE,BUTALSOEASYTOSCRATCHMOLDINADDITION,THEMATERIALTHICKNESSTOLERANCESSHALLCOMPLYWITHNATIONALSTANDARDSDIEBECAUSEOFACERTAINTHICKNESSOFMATERIALSUITABLEFORFORMING,BENDING,FLANGING,DRAWINGDIEOFTHEMALEANDFEMALEDIESTRUCTUREGAPISDIRECTLYDETERMINEDBYTHETHICKNESSOFTHEMATERIALTHEREFORE,UNEVENTHICKNESS,WILLRESULTINWASTEGENERATIONANDMOLDDAMAGE2DIEDIELIFEOFDIEDIELIFEOFAMOLDMATERIALPROPERTIES,CHEMICALCOMPOSITION,STRUCTURE,HARDNESSANDCOMPREHENSIVEREFLECTIONOFMETALLURGICALQUALITYAMONGTHEM,THEMATERIALPROPERTIESANDHEATTREATMENTAFFECTTHEQUALITYOFTHEMOSTOBVIOUSMOLDMATERIALPROPERTIESONTHEIMPACTOFDIELIFEISGREATIFTHESAMEWORKPIECE,USINGADIFFERENTMOLDMATERIALOFTHEBENDINGTEST,THETESTRESULTSTHE9MN2VMATERIAL,THELIFEOF5MILLION;WITHCRL2MOVNITRIDING,THELIFEOFUPTO40MILLIONTHEREFORE,THECHOICEOFMATERIALS,THEBATCHSIZESHOULDBEBASEDONWORKPIECE,RATIONALUSEOFMOLDMATERIALSTHEHARDNESSOFTHEDIEPARTSTODIELIFEAGREATIMPACTBUTNOTTHEHIGHERHARDNESS,LONGERDIELIFETHISISBECAUSETHEHARDNESSANDSTRENGTH,TOUGHNESSANDABRASIONRESISTANCEARECLOSELYRELATEDSOMEDIEDEMANDSOFHIGHHARDNESS,LONGLIFESUCHASTHEUSEOFT10STEELDIES,HARDNESS5458HRC,ONLYWASHEDTHOUSANDSOFTIMESABURRONTHEWORKPIECEGREATIFTHEHARDNESSTO6064HRC,THEGRINDINGLIFEOFUPTO2TO3MILLIONHOWEVER,IFCONTINUETOIMPROVEHARDNESS,FRACTUREOCCURSEARLIERSOMEDIEHARDNESSSHOULDNOTBETOOHIGH,ASTHEDIEMANUFACTURINGUSINGCRL2MOV5862HRCHARDNESS,THEGENERALLIFEOF23MILLION,INVALIDFORMOFCHIPPINGANDCRACKING,ANDIFTHEHARDNESSDOWNTO5458HRC,LIFEEXPECTANCYINCREASEDTO560000,BUTDECREASEDTO5053HRCHARDNESSAPPEARSEASYTOBLUNTTHEDIEEDGEPHENOMENONTHUS,MOLDHARDNESSMUSTBEBASEDONMATERIALPROPERTIESANDFAILUREMODESMAYBESHOULDENABLETHEHARDNESS,STRENGTH,TOUGHNESSANDWEARRESISTANCE,RESISTANCETOFATIGUESTRENGTHNEEDEDTOACHIEVEAPARTICULARSTAMPINGPROCESSTHEBESTMATCH3THESURFACEOFTHEMOLDHEATTREATMENTTOSTRENGTHENTHEQUALITYANDIMPACTONLIFEMOLDHEATTREATMENTTHENATUREANDQUALITYOFLIFEOFTHEMOLDAGREATIMPACTPRACTICESHOWSTHATTHEDIEPARTSOFTHEQUENCHINGDISTORTIONANDCRACKING,EARLYFRACTUREDURINGUSE,WHILETHEMETALLURGICALANDMATERIALSQUALITY,FORGINGQUALITY,MOLDSTRUCTUREANDPROCESSRELATED,BUTRELATEDMORETODIEOFHEATTREATMENTACCORDINGTOSTATISTICALANALYSISOFFAILURECAUSESOFMOLD,HEATTREATMENTFAILUREDUETOIMPROPERACCOUNTINGFORMORETHAN50PRACTICESHOWSTHATTHEMOLDMATERIALMUSTBEACCOMPANIEDBYHIGHHEATTREATMENTPROCESSPROPERLY,CANREALLYPLAYAMATERIALSPOTENTIALPARTSSURFACEHARDENINGMOLDWORKPURPOSEISTOOBTAINTHEEFFECTOFEXTERNALHARDTOUGHINSIDE,SOBEHARDNESS,WEARRESISTANCE,TOUGHNESS,GOODRESISTANCETOFATIGUEWITHMANYWAYSTODIESURFACEHARDENING,SURFACETREATMENTTECHNOLOGYOFNEWTECHNOLOGIESDEVELOPEDRAPIDLYINADDITIONTONITROCARBURIZINGANDIONNITRIDE,BORIDE,SEEPAGENIOBIUM,VANADIUMPERMEABILITY,HARDCHROMEPLATEDANDSPARKSTRENGTHENING,THECHEMICALVAPORDEPOSITIONCVDANDPHYSICALVAPORDEPOSITIONPVDHASBEENGRADUALLYADOPTEDBYCVDANDPVDTREATMENT,THEMOLDSURFACECOVEREDWITHSUPERHARDMATERIAL,SUCHASTIC,TIN,ETCHIGHHARDNESS,WEARRESISTANCE,CORROSIONRESISTANCE,ADHESIONISVERYGOOD,CANIMPROVETHEDIELIFESEVERALTIMESTOSEVERALTIMES4MANUFACTURINGPRECISIONOFTHEDIEPARTSOFDIELIFEPRECISIONDIEMANUFACTURINGANDLIFEINITINPARTICULAR,MOLDSURFACEROUGHNESSONTHEMOLDAGREATIMPACTIFUSINGCRL2MOVSTEELBLANKINGDIE,IFTHESURFACEROUGHNESSVALUER16M,ITSLIFESPANISABOUT30,000SUCHASPOLISHEDBYTHEPRECISION,SURFACEROUGHNESSVALUER04M,LIFECANBEINCREASEDTO45MILLIONTHEREFORE,THEWORKINGPARTSOFTHEMOLDSURFACE,THEGENERALMUSTGOTHROUGHGRINDING,GRINDING,POLISHINGANDOTHERFINISHINGANDFINEPROCESSING5OTHERASPECTSOFTHEIMPACTOFDIELIFE1PRESSTHEACCURACYISNOTHIGH,BUTALSOEASYTOMAKEDIEDAMAGE2DIEINTHEPRESSORNOTINSTALLEDPROPERLYANDTHEOPERATORSTECHNICALLEVEL,ONTHETOOLLIFEISALSOGREATLYAFFECTED3DIESINTHECUSTODYANDMAINTENANCEOFGOODANDBAD,ANDTHEUSEOFLUBRICANTCONDITIONALSOAFFECTSMOLDLIFECOLDSTAMPINGMOULDCONVEX,CONCAVEDIESIZEANDDISTRIBUTIONOFTHECLEARANCEDEGREEDIRECTLYAFFECTTHEQUALITYOFTHEBLANKINGPIECESANDTHELENGTHOFTHESERVICELIFEOFTHEDIEINGUARANTEEBLANKINGPIECESSPACEISMOULDMANUFACTURINGASSEMBLYVERYIMPORTANTLINK,ANDASSEMBLYQUALITYWILLDIRECTLYINFLUENCETHECONVEX,CONCAVEDIEIFTHECLEARANCEBETWEENTHEUNIFORMSUCHASTHEPROCESSOFCONVEX,CONCAVEDIESIZEPRECISIONALTHOUGHALREADYMEETTHEREQUIREMENTS,BUTINASSEMBLINGIFADJUSTMENTISBAD,CANCAUSECLEARANCEDOESNOTEVEN,RUSHEDOUTOFTHESPAREPARTSOFTHERAWEDGESEVENRUSHEDOUTOFUNQUALIFIEDPARTSTHEMOLDASSEMBLYISKEYTOCONTROLCONVEX,CONCAVEDIEOFRELATIVEPOSITIONS,INORDERTOENSURETHATTHECONVEX,CONCAVEDIE,UNIFORMANDTHECLEARANCEBETWEENTHERIGHTTORUSHOUTOFQUALIFIEDPARTS1DIEBEFOREASSEMBLYTHEPROBLEMSTHATSHOULDBEPAIDATTENTION2CONVEX,CONCAVEDIEANDMOULDPARTSITSELFISCLEARANCEOFTHEPRECISION,ANDTHEASSEMBLYOFTHEASSEMBLYPROCESSISREASONABLEINORDERTOENSURETHATTHEPOSITIONOFTHECONVEX,CONCAVEDIECORRECTLYANDGAPSEVEN,MOULDDESIGN,PROCESSINGTOASSEMBLYFROMTHEWHOLELINKSHOULDPAYATTENTIONTOTHEFOLLOWINGQUESTIONS(1)CONVEX,CONCAVEDIEDESIGNANDMANUFACTUREOFTHERIGHTDESIGNSHOULDBEBASEDONTHEABOVEALLWHENDIECUTTINGTHESECTIONOFAQUALITY,SERVICELIFEOFDIEFACTORSSUCHASTHEREASONABLESELECTIONOFCONVEX,CONCAVEDIECLEARANCEANDTOCONSIDERTHEMOULDINTHEPROCESSOFUSINGTHATGAPWEARINCREASES,GENERALINTHEDESIGNTHELEASTREASONABLECLEARANCEWHENMOULDANDINTHEMANUFACTURINGPROCESSCANENSURETHEPARTSPROCESSINGPRECISIONANDQUALITY,INTHEASSEMBLYPROCESSENSURECONVEX,CONCAVEDIEGAPEVEN,THISFORPROCESSINGCOMPLEXSHAPEISVERYKEYPARTS(2)ASSEMBLYMETHODTHECHOICESHOULDBEREASONABLEDIEASSEMBLYMETHODINCLUDEROUGHLYASSEMBLYMETHODANDDIRECTWITHASSEMBLYMETHODBEFORETHEASSEMBLYMUSTBECAREFULLYSTUDYMOLDASSEMBLYDRAWING,FULLCONSIDERATIONANDANALYSISOFTHESTRUCTURECHARACTERISTICSOFPUNCHINGDIE,DIEPARTSPROCESSINGTECHNOLOGYANDPROCESSINGACCURACYETC,INORDERTOCHOOSECONVENIENT,ACCURATEANDRELIABLEASSEMBLYMETHODTOENSURETHEQUALITYOFBLANKINGPIECES2CONVEX,CONCAVEDIEGAPBETWEENTHECONTROLANDADJUSTMENTOFTHEMETHOD3CONVEX,CONCAVEDIECLEARANCECONTROL,SHOULDACCORDINGTODIESTRUCTURE,CLEARANCESIZE,BLANKINGPIECESOFQUALITYANDPRACTICALASSEMBLYCONDITIONTOSELECTEDCONVEX,CONCAVEDIEGAPBETWEENTHECONTROLANDADJUSTMENTMETHODHAVETHEFOLLOWINGKINDS(1)PERVIOUSTOLIGHTMETHODWILLCONVEX,CONCAVEDIEAFTERMOLMERGED,SHONEALIGHTONTHEUNDERSIDE,OBSERVETHECONVEX,CONCAVEDIEAROUNDTHROUGHLIGHTANDDISTRIBUTIONTOJUDGETHESIZEOFTHECLEARANCEANDUNIFORMITYIFNOTEVEN,TOADJUSTTOEVENLYBETWEENFIXEDAGAIN,THISMETHODISSUITABLEFORSMALLGAPPLATESTAMPINGDIE(2)FEELERMETHODWILLCONVEX,CONCAVEDIEAFTERMOLMERGED,CONVEX,CONCAVEDIEINTOTHETHICKNESSOFUNILATERALCLEARANCEFEELERCONVEX,CONCAVEDIEGAPSINEACHDIRECTIONTHENTIGHTENTHESCREWONMODEFINALLYPUTPAPERTOSTAMPINGANDWILLLASTMOULDSEATANDFIXEDONBOARDWITHDRILLING,REAMINGPOSITIONINGPINHOLE,ANDATAPINLOCATION(3)GASKETSDIAOZHENGFAGASKETADJUSTMENTMETHODISSIMPLE,CONVENIENT,CLEARANCEISUSEDWIDELYASSHOWNINFIGURE1SHOWS,THEMATWITHGOODCONTOURMATIRON,WILLGASKETSWRAPPEDINTHEPUNCHTOTHEPUNCHINTOTHECONCAVEMOULD,OBSERVETHECONVEX,CONCAVEDIECLEARANCECONDITIONIFCLEARANCEDOESNOTEVEN,WITHSTRIKINGTHEPROTRUDINGMODELSOFFIXEDPLATEMETHODCLEARANCEADJUSTMENT,THENTIGHTENTHESCREWONMODEFINALLYPUTPAPERTOSTAMPING,OBSERVATIONONPAPERCUTTINGAROUNDBURRANDEVENRATETOJUDGEWHETHERCLEARANCECONVEX,CONCAVEDIEEVEN,TOADJUSTTHEGAPUNTILCUTTINGBURRUNIFORMSOFARFINALLYTHEMOULDSEATANDTHEPLATEWITHDRILLING,REAMINGPOSITIONINGPINHOLE,ANDENTERTHEPINLOCATIONTHISMETHODWIDELYUSEDCUTTINGMATERIALSFOCUSINGTHICKLARGECLEARANCEANDBENDINGSTAMPING,DEEPDRAWINGMOULDCLEARANCECONTROL4CHEMICALMETHODWHENTHECONVEX,CONCAVEDIECOMPLEXSHAPE,THEUSEOFTHEABOVESEVERALMETHODSMOREDIFFICULTTOADJUSTTHEGAP,THECHEMICALMETHODCANBEUSEDTOCONTROLTHEGAP,THEPLATINGMETHODI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