Experiments知識資料of知識資料materials知識資料processing

朽木易折，金石可鏤。千里之行，始于足下。第頁/共頁ExperimentsofmaterialprocessingExperimentofelectricdischargematerials(EDM)andwirecuttingTarget:1) BasictheoryofEDM:pulsedischargeresulttoforming.2) PositiveelectrodeandnegativeelectrodeExperimentofsheetmetalformingTarget:1) Thecurvesofdrawingforce(拉深力)-stroke,drawingforce-velocity,bulgingforce(脹形力)-stroke,bulgingforce-velocity.2) Theinfluencesofdrawingcoefficient(拉深系數(shù)),lubrication(潤滑),blankholderforce(壓邊力),convexandconcavedie(凸凹模),drawingheight.Experimentofblankingclearance,qualityofblankedpartsandblankingforceTarget:Detectdimensionalprecisionandsectionqualityofblankingworkpieces.Detectrangeofdrawingforceindifferentblankingclearance.Process:ElasticdeformationPlasticdeformationFracturedeformationExperimentofmoldstructureanddismountingStructureofmold(punch):Workingparts:punch(malemould),femaledie,convexandconcavedieLocatingparts:locatingpin,locatingplate.UnloadingpartsGuideparts:guidepillar,guidesleeve.Installationparts:theupper(down)template,pin,screw.ExperimentofutilizecircleupsettingtodetectfrictioncoefficientTarget:Understandthefriction’sinfluenceonmetalflow.Understandthemethodsfortestfrictioncoefficient.Theinfluencesoffrictiononprocess:Increasingenergyconsumption.TransformingstressstateandincreasingresistanceofdeformationGeneratingunbalanceofdeformationAcceleratingabrasionandlowinglifeofmold.ExperimentofmetalmeltingandcastingqualityTarget:Understandandpracticemeltingandcastingprocessincludessandmixing,modeling,moldclosing,loading,burden,weighing,melting,detecting,andcasting.ExperimentofDeformandbulkformingFunctionofDeformForminganalyzeHeattreatmentstimulation:normalizing,annealing,quenching,tempering,carburizing.Example:freeforgingprocess:ForgingDrawingForgingDrawingDetecting,UT,andnextprocessWorkpieceDrawingCalculateWeight,DimensionandBlankingDeterminedprocess,heattemperatureandequipmentHeattreatmentHeatandForgeCalculateWeight,DimensionandBlankingDeterminedprocess,heattemperatureandequipmentHeattreatmentHeatandForge8．ExperimentofDynaformsheetsteelformingandpunchingprocess.Utilizedynaformsoftwaretocombinetheoryofsheetsteelandanalyzeofvalue.Predictandanalyzecrackswrinkling,andspringbackbyresultofstimulationanalysis.Understanddifferentdefectsmightbecausedbydifferentstimulationandstudyoptimizetheprocess.ExperimentofmolddigitizedmanufacturingtechnologyProcessofdigitizedmanufacturing:GenerateoperationGenerateoperationDrawingorCADFinishingCheckandanalyzeGeneratecutterpathSetupparentpointSetuptoolslistArrangeprocessSetupCAMmoldProcessofnumericalcontrolCheckCADmoldFinis