2Heat-Treatment-of-Die-and-Mould-Oriented-Concurre

Availableonlineat(1):4C-43,74HeatTreatmentofDieandMouldOrientedConcurrentDesignLIXiong',ZHANGHong-bing',RUANXue-yu',LUOZhong-hua',ZHANGYan33.StateKeyLaboratoryforAdvanced(1.DepartmentofPlasticityFormingEngineering,ShanghaiJiaotongUniversity,Shanghai200030,China;MaterialsEngineering,ShanghaiInstituteofTechnology,Shanghai200235,China;MetalsandMaterials,UniversityofScienceandTechnologyBeijing,Beijing100083,China)2.DepartmentofAbstract:Manydisadvantagesexistinthetraditionaldiedesignmethodwhichbelongstoserialpattern.Itiswellknownthatheattreatmentishighlyimportanttothedies.Anewideaofconcurrentdesignforheattreatmentprocessofdieandmouldwasdevelopedinordertoovercometheexistentshortcomingsofheattreatmentprocess.HeattreatmentCAD/CAEwasintegratedwithconcurrentcircumstanceandtherelevantmodelwasbuilt.Theseinvestigationscanremarkablyimproveefficiency,reducecostandensurequalityofRandDforproducts.Keywords:diedesign;heattreatment;mouldTraditionaldieandmoulddesign,mainlybyex-perienceorsemi-experience,isisolatedfrommanu-facturingprocess.Beforethedesignisfinalized,theschemeofdieandmouldisusuallymodifiedtimeandagain,thussomedisadvantagescomeintobeing,suchaslongdevelopmentperiod,highcostandun-certainpracticaleffect.Duetostrongdesiresforprecision,servicelife,developmentperiodandcost,moderndieandmouldshouldbedesignedandmanu-facturedperfectly.Thereforemoreandmoreadvancedtechnologiesandinnovationshavebeenapplied,forex-ample,concurrentengineering,agilemanufacturing,virtualmanufacturing,collaborativedesign,etc['-''.Heattreatmentofdieandmouldisasimportantasdesign,manufactureandassemblybecauseithasavitaleffectonmanufacture,assemblyandservicelife.Designandmanufactureofdieandmouldhaveprogressedrapidly,butheattreatmentlaggedseri-ouslybehindthem.Asdieandmouldindustryde-velops,heattreatmentmustensuredieandmouldtherearegoodstateofmanufacture,assemblyandwear-resistantpropertiesbyrequest.Impertinentheattreatmentcaninfluencedieandmouldmanufac-turingsuchasover-hardand-softandassembly.Traditionallytheheattreatmentprocesswasmadeoutaccordingtothemethodsandpropertiesbroughtforwardbydesigner.Thiscouldmakethedesignersofdieandmouldandheattreatmentdivergefromeachother,forthedesignersofdieandmouldcouldnotfullyrealizeheattreatmentprocessandmaterialsproperties,andcontrarilythedesignersrarelyun-derstoodtheserviceenvironmentanddesigningthoughtC6'.Thesedivergenceswillimpactthepro-gressofdieandmouldtoagreatextent.According-ly,iftheprocessdesignofheattreatmentisconsid-eredintheearlydesigningstage,theaimsofshort-eningdevelopmentperiod,reducingcostandstabili-zingqualitywillbeachievedandthesublimationofdevelopmentpatternfromserialtoconcurrentwillberealized.Concurrentengineeringtakescomputerintegra-tionsystemasacarrier,attheverystartsubsequenteachstageandfactorshavebeenconsideredsuchasmanufacturing,heattreating,propertiesandsoforthinordertoavoidtheerror.Theconcurrentpatternhasdismissedthedefectofserialpattern,whichbringaboutarevolutionagainstserialpat-tern.Inthepresentwork,theheattreatmentwasin-tegratedintotheconcurrentcircumstanceofthedieFoundationHem:ItemSponsoredbyNationalNaturalScienceFoundationofChina(50075053)andScienceandTechnologyFoundationofBiography:LIXiong(1969-),Male,Doctor;E-mail:li-xiongBpeople.corn.cn;RevisedDate:August1,2004ShanghaiHigherEducation(03HZ01)To.1HeatTreatmentofDieandMouldOrientedConcurrentDesign*41I.indmoulddevelopment,andthesystemicandpro-foundresearchwasperformed.progressofdieandmouldandthemarketfore-ground.Whereasintheconcurrentpattern,there-DieandmoulddesignConsumercustomizationlationsamongdepartmentsareclose,therelatedde-partmentsalltakepartinthedevelopmentprogress1HeatTreatmentUnderConcurrentCircum-ofdieandmouldandhavecloseintercommunionstanceTheconcurrentpatterndiffersultimatelyfromtheserialpattern(seeFig.1).Withregardtoserialpattern,thedesignersmostlyconsiderthestructureandfunctionofdieandmould,yethardlyconsidertheconsequentprocess,sothattheformermistakesareeasilyspreadbackwards.Meanwhile,thedesigndepartmentrarelycommunicateswiththeassemb-ling,costaccountingandsalesdepartments.Thesewithpurchasers.Thisispropitioustoeliminationoftheconflictsbetweendepartments,increasetheeffi-ciencyandreducethecost.Heattreatmentprocessintheconcurrentcir-cumstanceismadeoutnotafterblueprintandwork-piecetakenbutduringdieandmoulddesigning.Inthisway,itisfavorabletooptimizingtheheattreat-mentprocessandmakingfulluseofthepotentialofproblemscertainlywillinfluencethedevelopmentthematerials.t(b)Marketanalysis1treatmenttII+ConceptualdesignConsumercustomizationDieandmoulddesignManufacturingprocessdesignHealtrealmentprocessdesignAssembledesignSystemsimulationCostestimationBid~HealLrealmenlvHeattreatmenlHeattreatment4Healtrealmenl+4ManufactureISatisfied?-+(a)Serialpattern:(b)ConcurrentpatternFig.1Systemframechartofserialandconcurrentengineeringbaseddieandmouldexploitation2IntegrationofHeatTreatmentCAD/CAEforDieandMouldItcanbeseenfromFig.2thattheprocessde-signandsimulationofheattreatmentarethecor