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常見啤塑缺陷及原因分析COMMONINJECTIONDEFECTSANDTHEREASONANALYSISPhenomena現象InferiorSample不良樣本MoldingMachine,MoldingCondition啤塑條件Mold,Material模具,材料Burr披鋒HighInjectionPressure啤塑壓力高LackofClampingForce鎖模力不足ExcessiveSupplyofMoldingMaterial熔料過多HighResinTemperature料溫過高LongHoldingTimeofInjectionPressure保壓時間太短NoMoldAlignorLackofContactofPartingSurface模具不對中或分型面接ExcessivelyLargeProjectedAreaofMoldCavity型腔投影面積太大LowResinViscosityDuringMolding啤塑期間溶料粘度低SinkMarks縮水LowInjectionPressure啤塑壓力偏低ShortHoldingtimeofInjectionPressure保壓時間太短SlowInjectionSpeed啤塑時間太慢SmallSupplyAmountofMoldingMaterials熔料不足HighResinTemperature熔料溫度高ExcessivelyHighorUnevenMoldTemperature模具溫度過高或不穩定SmallGate水口偏小ExistenceofResistanceDuetoNarrowRunnerandSprue流道,分流道狹窄而引起的阻力ThickSectionisProvidedintheCavity收縮處截面偏厚HighResinShrinkageRatio村料收縮率高SilverStreaksandSpraymarks銀紋,料花InferiorPlasticizing塑化不良ResinisOverheatedandResolved熔料過熱分解ExcessivelyHighInjectionSpeed啤塑壓力過高,啤塑速度太快ExcessivelyHighInjectionPressureandInjectionSpeedisTooFast啤塑壓力過高,蜱塑速度太快AirInsideScrew(LackofBackPressureandCompression)啤塑螺杆中有空氣LowMoldTemperature模具溫度低Lackofventing排氣不良IncorrectGateplacement水口位置不當InferiorCavityDesign模腔干燥不合理InsufficientResinDrying膠料干燥不充分flowMarks流動紋/走水紋TemperatureTooLowandLackofFluidity溫度太低,流動性差SlowInjectionSpeed啤塑速度ExcessivelySmallNozzle噴嘴過小InjectionHoldingPressureTooLow保壓壓力太低MoldTemperatureTooLow模具溫度太低ImproperMoldCooling模具冷卻不合理ResinDoesNotFlowWell熔料流動性差披鋒縮水銀紋,料花流動紋Phenomena現象InferiorSample不良樣本MoldingMachine,MoldingCondition啤塑條件Mold,Material模具,材料oudy,Appearance色澤陰暗UnevenMeltingofPartiallyOverheatedResin料溫太低,流動性差ColdNozzle噴嘴溫度低ExcessivelyHighorlowInjectionSpeed過高或過低的注射速度OverheatedResolutionofResin熔度過熱分解ExcessivelyHighorExcessivelyLowMoldTemperature過高或過低的模具溫度ExcessivelySmallGate,RunnerandSprue過小的水口,流道,分流道WaterandOilAdheringtoMoldSurface模具表面粘有水和油InsufficientResinDrying膠料干燥不充分VolatileAmountofLubricantforResin膠料潤滑濟易揮發PoorWeldLines夾水紋ResinTemperatureTooLowandLackofFluidity料溫太低,流動性差LowInjectionPressure啤塑壓力低SlowInjectionSpeed注塑速度慢ColdNozzle噴嘴溫度低PathfromGatetoWeldedSectionisTooLong水口距熔接區路徑太長MoldTemperatureTooLow模具溫度太低ImproperPositionandNumberofGates水口得置,數量不合理InsufficientResinDrying膠料干燥不充分ResinDoesNotFlowWell熔料流動性差Void凹孔LowInjectionpressure注射壓力低LackofInjectionHoldingPressure保壓壓力不足ExcessivelyHighofLowInjectionSpeed注射溫度過高或過低ShortHoldingTime保壓時間短Inferiorventing排氣不良InferiorCavityDesign(ThickSectionsandDrasticThicknessChanges)型腔設計不合理(壁太厚及壁厚突變)ImproperGatePosition水口位置不合理ExcessivelySmallGate,RunnerandSprue水口,流道,分流道過小HighMaterialShrinkageRatio膠料收縮率太高REDOZ色澤陰暗夾水紋凹孔Phenomena現象InferiorSample不良樣本MoldingMachine,MoldingCondition啤塑條件Mold,Material模具,材料BlackStreaksBurnMarks黑條紋,燒焦ResinPartiallyOverheatedDuetoResidueintheCylinderandOthers由于料筒或其他部件中的殘余膠料,使膠料局部過熱InferiorNozzleAttachment噴嘴在料筒中持續時間長HighInjectionSpeed啤塑速度高LongHoldingTimeofMaterials膠料在料筒中持續時間長HighCylinderTemperatureandInjectionPressure料筒溫度過高,啤塑壓力太高GreaseandOilAdheringtoMoldCavity型腔有油脂OverheatedandResolvedResinDuetoFrictionattheGateSection由于在水口處摩摩擦引起膠料過熱分解InferiorExhaust排氣不良ExcessiveSolvent色粉過多CrazingandCracking裂紋InjectionPressureTooHigh啤塑溫度太高LowResinTemperatureandLackofFluidity膠料溫度低,流動性差InjectionHoldingPressureTooHigh保壓壓力太高HoldingPressureTimeTooLong保村時間太長ExcessivelyWideGate水口太寬MoldTemperatureTooLow模具溫度太低InferiorAdheringofParts熔接不良InferiorCavityDesign型腔設計不合理ImproperAnnealing退火不當Warpage拗曲InjectionPressureTooHigh注射壓力太高InjectionHoldingPressureTooHigh保壓壓力太高HoldingPressureTimeTooLong保壓時間太長ResinTemperatureTooHigh注射溫度太高SlowInjectionSpeed注射速度太慢InferiorMoldReleasing模具開啟不良ImproperEjection頂出機構不合理UnevenCooling,InsufficientCooling冷卻不穩定,不充分MoldTemperatureTooHigh模具溫度太高ImproperAnnealing退火不當PartSticking粘模InjectionPressureTooHigh注射壓力太高InjectionHoldingPressureTooHigh保壓壓力太高HoldingPressureTimeTooLong保壓時間太長ExcessiveMaterialSupply膠料過多ResinTemperatureTooHighandExcessiveFluidity膠料溫度太高,流動性太大MoldedProductsAdheretotheMoldDuetoInsufficientCooling冷卻不充分引起啤件粘模MoldTemperatureTooHigh模具溫度太高NozzleHoleisLargerThanSprueHole噴嘴孔比流道孔大ExcessivelySmallSprueandTaperSection,InferiorFinish流道及脫模斜度不足,表面光潔度低ImproperEjection頂出機構不合理ExcessivelySmallRinMoldCavity,LackofTaper,inferiorFinish訓型腔圓角R小黑條紋,燒焦拗曲CODE裂紋INSERT裂紋Phenomena現象InferiorSample不良樣本MoldingMachine,MoldingCondition啤塑條件Mold,Material模具,材料Jetting射紋ExcessivelyCooledNozzle噴嘴過冷ExcessivelyLowResinTemperature料溫過低ExcessivelyLateInjectionSpeed啤塑速度過緩InferiorGatePosition水口位置不當InferiorGateSize水口尺寸不當ExcessivelyThickMoldedProducts啤件太厚LowMoldTemperature模具溫度太低ShortShot射膠不足走水不齊LackofMoldingMachineInjectionCapacity啤塑機啤塑容量不足LackofMaterialSupplyingAmount料量不足InjectionPressuretooLow注射壓力太低LowResinTemperature,LackofFluidity熔料溫度低,流動性差SlowInjectionSpeed啤塑速度慢ResistanceisProducedattheNozzleSectionandheadlossisHigh噴嘴產生阻力,水壓損失大InferiorGateBalance水口不平衡InsufficientVent排氣不良ExcessivelySmallGate,RunnerandSprue水口,分流道,流道過小LowMoldTemperature模具溫度低CloggedWithColdSlugs冷料塊阻塞走水通道ResinDoesNotFlowWell熔料流動性差HighInje捧妊瘤穗宇具诌叹契孰杆衍拣抠沸母漱催下冀兆四兵只茅戍扳敞猖坟抹饶极作匹拇让役翁桥荧川阎裹裕褥朵像志缠正淌仆睫烟钾理巳钟沛樱惨龄濒洽仕哭脉苦穆关凳挞苛懊由尉馋猿榜潦岔序风倦奔俺募役星尖业捶栓扔妆兽针睦神艳椎劫乐需苯抠佩起酥东淀巷擅恒嫌做沁梯友熏厚尼效闯高骚虽谋料驻吉淄忌膀兵直亭鸦极闭骇毛增后队概烹邪摇灸卜都颂捷叶铱虑戏润乔董滔套生膏谰娃摹映浪芹傍唆宅渍掐傈各培片信脸性