gas_assist_GE_气辅成型模具设计

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1、27304GasAssistF&BCover.qxd4/3/007:20PMPage2GEPlasticsAdvancedTechnologyForGASASSISTDESIGNANDPROCESSINGTechnologyGuideInjectionMoldingGasAssist27304GasAssistInside.qxd4/4/008:29AMPage2GasAssistInjectionMoldingContentsClosedLoops............................20FlowAroundCorners...............

2、......20BalancingofPolymerFill......................21Introduction..................................3GasChannelSizeandGeometry...............22ProcessMechanicsChannelSystemDesignProcedure.............22ProcessAnalysis............................24StagesofGasAssistMolding..................

3、.6PartAnalysis................................24PathofLeastResistanceMaterialSelection...........................26forGasPenetration..........................6SecondaryOperations........................26PackingViaGasAssist........................7ToolDesignProcessMethodsMoldToolMaterials

4、..........................27ProcessSequence............................8Gates.......................................27GasInjectionLocation.........................8ColdRunners................................27MachineNozzle............................8HotManifoldSystems....................

5、....28ResinDeliverySystem.....................9Venting.....................................28MoldCavityGasInjection.................10Cooling.....................................28GasDeliverySystem.........................10GasSupply..............................10Shrinkage...............

6、....................28GasHoses..............................11GasPinLocation.............................28GasPinDesign..........................11Shut-offNozzles.............................28PressureControlInjection.................11VolumeControlInjection..................11ProcessCont

7、rolGasVentingandRecovery.................12WallThicknessFormation.....................29PartPerformanceControlofWallThickness.....................29SolidifiedLayerThickness....................29StructuralPerformance.......................13MoltenLayerThickness......