毕业论文中英文资料外文翻译文献

毕业论文中英文资料外文翻译文献HeatTreatmentofDieandMouldOrientedConcurrentDesignLIXiong,ZHANGHong-bing,RUANXue—yu,LUOZhong—hua,ZHANGYanAbstract:Manydisadvantagesexistinthetraditionaldiedesignmethodwhichbelongstoserialpattern.Itiswellknownthatheattreatmentishighlyimportanttothedies.Anewideaofconcurrentdesignforheattreatmentprocessofdieandmouldwasdevelopedinordertoovercometheexistentshortcomingsofheattreatmentprocess.HeattreatmentCAD/CAEwasintegratedwithconcurrentcircumstanceandtherelevantmodelwasbuilt.Theseinvestigationscanremarkablyimproveefficiency,reducecostandensurequalityofRandDforproducts.Keywords:diedesign;heattreatment;mouldTraditionaldieandmoulddesign,mainlybyexperienceorsemi—experience，isisolatedfrommanufacturingprocess.Beforethedesignisfinalized，theschemeofdieandmouldisusuallymodifiedtimeandagain，thussomedisadvantagescomeintobeing,suchaslongdevelopmentperiod,highcostanduncertainpracticaleffect.Duetostrongdesiresforprecision,servicelife,developmentperiodandcost,moderndieandmouldshouldbedesignedandmanufacturedperfectly.Thereforemoreandmoreadvancedtechnologiesandinnovationshavebeenapplied,forexample,concurrentengineering,agilemanufacturingvirtualmanufacturing,collaborativedesign,etc.Heattreatmentofdieandmouldisasimportantasdesign,manufactureandassemblybecauseithasavitaleffectonmanufacture，assemblyandservicelife．Designandmanufactureofdieandmouldhaveprogressedrapidly，butheattreatmentlaggedseriouslybehindthem．Asdieandmouldindustrydevelops，heattreatmentmustensuredieandmouldtherearegoodstateofmanufacture，assemblyandwear—resistantpropertiesbyrequest.Impertinentheattreatmentcaninfluencedieandmouldmanufacturingsuchasover—hardand—softandassembly．Traditionallytheheattreatmentprocesswasmadeoutaccordingtothemethodsandpropertiesbroughtforwardbydesigner．Thiscouldmakethedesignersofdieandmouldandheattreatmentdivergefromeachother，forthedesignersofdieandmouldcouldnotfullyrealizeheattreatmentprocessandmaterialsproperties，andcontrarilythedesignersrarelyunderstoodtheserviceenvironmentanddesigningthought.Thesedivergenceswillimpacttheprogressofdieandmouldtoagreatextent.Accordingly，iftheprocessdesignofheattreatmentisconsideredintheearlydesigningstage，theaimsofshorteningdevelopmentperiod，reducingcostandstabilizingqualitywillbeachievedandthesublimationofdevelopmentpatternfromserialtoconcurrentwillberealized．Concurrentengineeringtakescomputerintegrationsystemasacarrier,attheverystartsubsequenteachstageandfactorshavebeenconsideredsuchasmanufacturing，heattreating，propertiesandsoforthinordertoavoidtheerror．Theconcurrentpatternhasdismissedthedefectofserialpattern,whichbringaboutarevolutionagainstserialpattern．Inthepresentwork．theheattreatmentwasintegratedintotheconcurrentcircumstanceofthedieandmoulddevelopment，andthesystemicandprofoundresearchwasperformed．1HeatTreatmentUnderConcurrentCircumstanceTheconcurrentpatterndiffersultimatelyfromtheserialpattern(seeFig．1).Withregardtoserialpattern，thedesignersmostlyconsiderthestructureandfunctionofdieandmould，yethardlyconsidertheconsequentprocess，sothattheformermistakesareeasilyspreadbackwards．Meanwhile，thedesigndepartmentrarelycommunicateswiththeassembling，costaccountingandsalesdepartments．Theseproblemscertainlywillinfluencethedevelopmentprogressofdieandmouldandthemarketforeground．Whereasintheconcurrentpattern，therelationsamongdepartmentsareclose，therelateddepartmentsalltakepartinthedevelopmentprogressofdieandmouldandhavecloseintercommunionwithpurchasers．Thisispropitioustoeliminationoftheconflictsbetweendepartments，increasetheefficiencyandreducethecost．Heattreatmentprocessintheconcurrentcircumstanceismadeoutnotafterblueprintandworkpiecetakenbutduringdieandmoulddesigning．Inthisway，itisfavorabletooptimizingtheheattreatmentprocessandmakingfulluseofthepotentialofthematerials．2IntegrationofHeatTreatmentCAD／CAEforDieandMouldItcanbeseenfromFig．2thattheprocessdesignandsimulationofheattreatmentarethecoreofintegrationframe．AfterinformationinputviaproductdesignmoduleandheattreatmentprocessgeneratedviaheattreatmentCADandheattreatmentCAEmodulewillautomaticallydividethemeshforpartsdrawing，simulationtemperaturefieldmicrostructureanalysisafterheat—treatmentandthedefectofpossibleemerging(suchasoverheat,overburning)，andthentheheattreatmentprocessisjudgediftheoptimizationismadeaccordingtotheresultreappearedbystereoscopicvisiontechnology．MoreovertoolandclampingapparatusCADandCAMareintegratedintothissystem．Theconcurrentengineeringbasedintegrationframecanshareinformationwithotherbranch．Thatmakesforoptimizingtheheattreatmentprocessandensuringtheprocesssound．2.13-DmodelandstereoscopicvisiontechnologyforheattreatmentTheproblemsaboutmaterials，structureandsizefordieandmouldcanbediscoveredassoonaspossibleby3-Dmodelforheattreatmentbasedontheshapeofdieandmould．Modelingheatingconditionandphasetransformationconditionfordieandmouldduringheattreatmentareworkable，becauseithasbeenbrokenthroughforthecalculationofphasetransformationthermodynamics，phasetransformationkinetics，phasestress,thermalstress，heattransfer，hydrokineticsetc．Forexample，3