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MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施Silverstreaking银纹Mixtureofcoarseandfinegranules粗细颗粒混合Nonuniformplastictemperature不一致的塑料温度Exceedingplasticizingcapacity超出塑化能力AirtappedbetweenthegranulesatthehopperendIntermitentflowinthecavity模腔内间歇流动Injectionspeedtoofast注射速度过快Mouldtemperaturetoolow模温过低Injectionpressuretoohigh注射压力过高Moistureandvolatilesinthematerial原料湿度大Materialtoohot原料太热Contaminationofforeignmaterial混料Gatesandrunnerstoosmall流道和水口太小Excessivecondensate/lubricantsonthemouldmaterial型腔表面有油污或冷凝物Adjustinjectionrate调节注射速度Useuniformgranulation使用统一的颗粒Reducetemperatureofnozzle降低管口/喷嘴温度Preheatmaterial预热原材料Reducerearcylindertemperatureanduseuniformgranulation降低后料桶温度,使用统一的颗粒Balancegateposition,relocategates,平衡流道位置,重新定位流道VentMould,reduceinjectionpressure,reducecylindertemperature在模具上开口,减少注射压力,降低料桶温度Increasemouldtemperature增加模温Reduceinjectionpressure降低注射压力Preheatthematerialadequately,useahopperdryer充分预热原材料,使用漏斗干燥机Decreasethemouldcycletime,decreasethecylindertemperature减少模具周期时间,降低料桶温度Checkthemouldingpowderforcontamination,checkthefeedsystem,purgethecylinder,Checktheregrindcontentandquality.检查混料粉末,检查灌注系统,净化料桶,检查回用料的组成和质量Increasethesizeoftherunnerandthegates.增大水口和流道的直径Wipethemould,uselesserquantityoflubricants,changethelubricantandtry擦模,减少脱模剂使用,更换脱模剂试验Increaseordecreasetheinjectionrate.增加或降低注射速度Blackstreaks黑纹八、、Frictionalheatcausedbymovementofcoldgranulespastoneanother冷料运动引起的摩擦热Airtrappinginthemould排气不良Plungeroff-centercausingfrictionburningofmaterial顶针摩擦热烧坏材料Contamination污染Useexternalindication,increaserearcylindertemperature,ventmouldproperly,relocategates.增加注射旦温度,正确释放模具,重新定位流道Reduceinjectionpressure.降低注射压力Relocateplunger重新定位顶针Purgethecylinder清理料桶Shortshots缺料Coldmaterial料温低Coldmould冷模Insufficientpressure压力不足Insufficientfeed不足的进料Increase plastictemperature提高塑料件温度Increase mouldtemperature增加模温Increase pressureandtemperature增加压力和温度Increase feed增加进料量
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施Poorventing排气不良Insufficientplungerforwardtime活塞前进时间不足Insufficientinjectionspeed注射速度不足Improperbalanceofplasticflowinmultiplecavitymoulds.多穴模具中塑料流动失衡Insufficientfeeding力口料不足Meltflowrestricted熔体流动受限Backpressureincavity模具背压Unbalancedrunnerdesign小平衡的水口设计Coldslugclogginggates,runnersandsprue.冷料堵塞流道、水口等Ununiformmouldtemperature模温不合理Ununiformmeltcushion熔融保护不合理Machinecapacitynotenough设备吨位不足Increasenumberandsizeofvents增加排气口数量和大小Increaseplungerforwardtime.提高活塞前进时间Increaseinjectionspeed提高注射速度Correctunbalancedcoixlition纠正流动不均衡情况Checkthematerialinthehopper,checkthefeedthroatforresinagglomerates,machinecapacitynotenough检查料斗里的原料,检查注料口熔料是否结块,设备能力是否足够Increasethegate,runner,andspruesize,usethenozzlewithahigherdiameterhole,trywithahigherMFImaterial,checkthenozzleforblocks.增加流道、水口、注射口尺寸,更换高MFI材料,检查喷嘴Provideadequateventing,reducetheclampingforce.加强通风,减小锁模力Balancetherunnerdesign,cavitylocation平衡水口设计、型腔定位Increasethesizeofcoldslugwell,providecoldwellforsubrunners.增加冷料阱,为分水口设计冷料阱Rearrangethecoolinglineofmouldtoprovideauniformcooling均匀冷却(重新安排冷却温度)Maintainauniformmeltcushion,checkthebackflowvalveand,repairifneeded维持熔融垫的均衡,检查并修复背流值Useabiggermachine.使用较大设备Flash批锋Materialtoohot料温太高Excessivefeed加料过多Erraticfeed加料不稳定Poorpartinglineormattingsurface合模线或分型面不良Erraticcycletime注射周期不稳定Injectionpressureistoohigh注射压力过高Insufficientclampingforce锁模力不足Foreignmatterorflashactingashighspotonmouldland.模血杂质Mouldplatensarewarped,Clearanceinvents,knock-outs,etc.aretoogreat模芯歪、排气口间隙,模芯破坏等InsufficientventingcausingmaterialfromcavitytoflowoutReducematerialtemperature,increasecycletime,decreasemouldtemperature降低料温,增加循环时间,降低模温Reducefeed少加料Checkthefeedingsystem.检查加料系统Refacethepartingline,mattingsurface抛光分型面、合模线Maintainuniformcycletime.稳定注塑周期Decreasetheinjectionpressure,decreasetheholdonpressure,decreasetheinjectionholdtime,降低注射压力、保压压力注射时间Usewherevernecessarybiggermachineifavailable,reducesnumberofcavities;adjustthemechanismtoincreasetheclampingforce.尽可能使用较大设备,减少棋腔数量,调节机械装置以增加锁模力Inspectmouldlandandcleancarefully.检查清理模腔表面Checktheclearanceandadjust检查调整间隙Inspectventsandcleanincaseofblockage,enlargevents,
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施通风不足引起原料从模腔流出•Injectionpressureunevenlydistributedinthemould模具中的注射压力分配不均ifneeded.检查并清理通风口以防堵塞,如有必要,扩大通风口•Cavityandrunnerlayoutshouldbebalanced平衡型腔以及水口分布Spruesticking分流道粘连Excessivepressure压力过大Nozzlenotalignedwithspruebush喷嘴未与注入口尘套并排Spruepullertoosmall衬套太小Materialtoocoldatnozzleandsprueunabletobreakaway.喷嘴处料温过低,分流道不能分流Nozzleorificegreaterthanspruebushorifice.喷嘴口大于分流道口Materialtoohot,Spruebreakingatcomponentend.料温太热,喷嘴尾部结构损坏Sprueheldupinspruebushduetoinadequatetaper因锥度不合适导致注料口卡住Hotmaterial,料温过热Excessivematerial料过多Insufficientdraft气流不足Improperfitbetweenspruebushingandnozzle.分流道衬套和喷嘴装配不当Undercutsorroughsurface.底切或表面粗糙Longplungerdwell保压过长Reducepressure减小压力Realignthenozzlewithaspruebush.重新排列喷嘴与spruebushIncreasetheundercut,Increasethesizeofspruepuller.增大底切,增大衬套Increasethenozzletemperatureuntilthespruebreaksfromthenozzle.提高喷嘴温度,直到注射畅通ChangethenozzlewithalowerDiaorificeorincreasethediaofspruebushorifice将喷嘴口直径变小,或者加大分流道口的直径Decreasethecylindertemperature,increasethemoldingcycletime,andincreasethecoolingtimeinthemould.降低料桶温度,增加注塑周期时间,增加模具冷却时间Giveadequatetaperinthespruebush,usemouldreleaseagents,removeburrsonthesprue.使用模具脱模剂,去除分流道上的芒刺Decreasematerialtemperature.降低料温Decreasesizeofthesprueextendednozzleandshortspruebushing减小喷嘴尺寸,缩短注射衬套Increasedraftangle.加大气流角度Holesizeinnozzleshouldbesmallerthaninthespruebushing.喷嘴上孔的尺寸应小于分流道bushing孔Eliminateundercutsandpolishthesurface.消除底切,打磨表面Reduceplungerforwardtime降低保压时间Sinkmarks缩痕Notenoughplasticinthemouldtoallowforshrinkageduetothicksections,bosses,ribsetc.缺料导致细小结构收缩Notenoughfeed注料不足Injectionpressuretoolow注射压力太低PlungerforwardtimetoshortUnbalancedgates水口不均衡Injectionspeedtooslow注射速度过低Plastictoohot原料过热•Redesignandincreaseinjectionpressure重新设计,增加注射压力Increasefeed增加注入Increaseinjectionpressure.增加注射压力Increaseplungerforwardtime.Restrictflowthroughgatesnearsprue.限制分流道附近的水口流量Raisemouldandcylindertemperature提高模具和料桶温度Reducecylinderandmouldtemperatures,decreasecycletime.降低料桶和模具温度,减少循环时间♦Useoftimersformouldopentime使用计时器控制模具开放时
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施Variationinmouldopentime模具开放时间变差Excessivecushioninfrontoftheplunger缓冲垫过长?Gatelocation,it’ssizeanddesign进胶口的设计尺寸、定位Insufficientpacking.密封不良Partsectionsuneven结构不均匀Producttoohotwhenejected.脱模时温度过高Restrictioninflow流动限制Localhotspotinthemoulds.模具局部过热间Reducefeed减少注入Locatethegateatthethicksectionofthepart,increasethegatesizeandreducegateland定位进胶口在薄壁位置,增大进胶口,缩短胶口长度()Increasetheinjectionpressure.增加注射压力Increasetheholdpressuretime,checkbacktheflowvalveforleakage.增加保压时间,检查背流阀是否有泄漏Redesignthepartwithanevenwallthickness重新设计模具,达到壁厚均匀Decreasethecylindertemperature,increasethecoolingtimeinmould,reducethemouldtemperature.降低料桶温度,增加模具冷却时间,降低模温Increasethegate,runnerandspruesize,provideaproperventinginthemould,balanceflowandfillingincavity.加大水口、流道、分流道尺寸,使模具适当通风,平衡流量和模腔填注量Redesignthecoolingpatterninthemould重新设计模具的冷却方式Partstickingtothemould.部件与模具粘连Injectionpressureorcylindertemperaturetoohigh注射压力或料桶温度太高Excessivefeed过多注入Plungerforwardtimetoolong活塞刖行时间太长Undercutsinmould模具底切Variationofmouldopentime开模时间变动过大Improperfinish表面状态不合适Roughsurfaceofthemould模具表面粗糙Inadequatereleasetaperinmouldcavity.不充分的脱模斜度Ejectionsystemnotdesignedproperly喷射系统设计不良Undercutsinthemouldcavity.模腔底切Misalignmentofcoreandcavity中心和模腔未对准Mouldmadeofsoftporoussteel.模具材料为软钢Reducepressureortemperatureaccordingly相应地减少压力或温度Reducefeed减少注入Reduceplungerforwardtime.减少活塞刖行时间Eliminateundercuts,polishandprovidesufficientdraft去除底切,抛光,提供充足的注射量Maintainconstantmouldopentime.保持一致的开模时间Polishroughcavitysurfacetocorrectfinish,adjustmouldtemperaturetoobtainpropershrinkage打磨粗糙的模腔表面以纠正表面状态,调节模温以获取合适的收缩Polishthemouldwell打磨模具Provideareleasetaper提供脱模斜度Checktheejectorsystem,provideextraejectorpins检查注射系统,提供额外的注射针Eliminateundercutswithaproperdesign,polishandprovidesufficientdraft.通过正确的设计抛光打磨来消除底切Checkthealignmentofthecoreandcavity.检查中心和模腔是否对准Replacethemouldwithahardenedmetal.使用硬钢材料的模具代替Reducetheinjectionpressure,reducethefeedmaterial,reducethescrewforwardtime.减少注射压力,减少原料注入
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施Overpackingoftheplasticmaterial.塑料材料Unevenpressureincavities.模腔压力不均Partsstickingtoinjectionside.产品粘在定模上Moulddepositcausingsticking模腔堆积引起粘模.量,减少螺杆前行时间Maintainaconstantfeedcushion,balancethegatesandrunnerforuniformfilling.保持持续的螺杆速度平衡流道、水口来均匀填充Useamoldreleasespray,adjustthemouldtemperaturetoretainthecomponentsontheejectionside.useanundercurunnertokeepthepartsontheejectionside通过模具释放来调整模具温度,或增加水口底切,来保证产品在动模上Checkandcleanthemoulddeposits.检查清除模腔堆积Flowlinesandfolds流纹,分层Coldmaterial冷料Coldmould冷模Gatestosmall水口太小Nonuniformsectionthickness.不合适的结构厚度Increaseplastictemperature增加塑料温度Increasemouldtemperature增加模温Enlargegates.加大水口Eliminateheavybossesandribs.去除较大的突起和肋位Poorsurfacefinish夕卜观不良Coldmaterial冷料Coldmould冷模Slowinjection注射慢Poorflowwithinmouldcavity型腔内流动性差Poormouldcavityfinish型腔表面不良Contaminationofmaterial混料Materialwet原料潮湿Mouldsurfacetoocold模温过低Poormouldsurface模具表面粗糙Inadequateinjectionpressure.注射压力不足Insufficientholdpressuretime.保压时间不足Increase plastictemperature增加料温Increase mouldtemperature增加模温Increase injectionspeed.增加注射速度Redesign parts.重新设计产品结构Polishmouldcavitysurfacetocorrectfinish打磨模腔表面Checkthefeedmaterialforcontamination,purgetheinjectioncylinder,cleanthefeedingsystem,checkthequalityofregrindadded检查注入材料防止混料,净化注射料桶,清洗注入系统,检查添加的再生料的质量Preheatthematerial,usehopperdryer预热原料,使用漏斗干燥器Increasethemouldsurfacetemperature增加模具表面温度Polishthemould打磨模具Increasetheinjectionpressure增加注射压力Increasetheholdpressuretime增加保压时间Warpage变形•Excessiveorientationinthematerialwhichmanifestsitselfindifferentialshrinkageinthedirectionofflowandverticaltoit.Orientationincreasesasmaterialbecomestooviscous,thewallbecomesthinner,runnerbecomesnarrowerandlonger原料的收缩方向性不同这种方向性在材料变粘,壁厚变薄,流道变长变细时增加Avoidorientation消除收缩的方向性不同Watchcylinderdesign注意料桶设计Ifpossibleusefollow-uppressurelowerthaninjectionpressure,shortenfollow-uppressure.可能时使用低于注射压力的后续压力,缩短后续压力Reducethecylindertemperature,increasethemouldcoolingtime,placeinthejigaftermoulding,andincreasethemouldtemperature.降低料桶温度,增加模具冷却时间,成型后放置一夹具,提高模温Designthepartwithanevenwallthicknessandstrengthen
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施Temperaturedistributionincylinderisuneven炮桶温度分布不均Asaresultofover-loadingofmouldingduetoexcessiveortoolongfollowuppressure因压力过大导致的模具过载Componentsejectedtoohot注射时过热Portdesignwithuneventhickness产品设计壁厚不匀Mouldcoatinguneven模具表层不匀Distortionduetointernalstrain由于内部张力导致扭曲Ejectionknockoutpinsworkingunevenly.顶针工作不正常Gatelocationnotproper水口位置不合适Distortionofheavysectiononly.大件变形itwithribs.设计产品时应壁厚均匀、通过筋位加强结构Maintainauniformtemperatureinthemould,useacoldmould.保持模温一致,使用冷模Increase/decreasetheinjectionpressure,increasethemouldcoolingtime,increasetheoverallmouldingcycle.加大/减小注射压力,增加模具冷却时间,增大成型周期Checktheknockoutpinlevelsandsetevenly,increasetheknockoutarea.检查并调整顶针水平,提高下陷位置Gatelocationshouldbeinsuchawaythatthematerialflowsfromthethicktothinsection,gaterunnersystemdesignforbalancedfilling.水口位置应当利于原料从较粗部位流到较细部位,水口流道系统设计应利于平衡注入Increasethemouldcoolingtime,maintainuniformmelttemperature,slowlycoolthepartinwarmwater,placeinashrinkjigafterejection.增加模具冷却时间,保持统一的熔温,缓慢地在温水中冷却部件,射出后放置一个收缩夹具Fracturecracks脆裂Internalstressduetometalinsertswithcoefficientofthermalexpansiondifferentfromtheplasticmaterial.(金属镶块使同胶料的热膨胀系数不同导致的内应力)Internalstressduetoimpropermoulddesign(不正当的模具设计导致的内应力)Embrittementduetothermaldegradation(热降解导致的脆化)Partsejectedtoofast(局部注射过快)Ejectorsystemdefective.(排出系统缺陷)Internalstressduetocoldmetalinsert(模具冷却导致内应力).Usehighermolecularweightmaterials,increasewallthickness,andannealthemoldedparts.(使用高分子原料、增加壁厚、注塑件退火)Checkthemoulddesignandchangeifnecessary.(评估模具设计必要时更改设计)Reducethecylindertemperature,usefastermoldingcycle.(降低炮筒温度、缩短产品周期)Givemorecoolingtimeinthemould.(提高冷却时间)Checktheejectionsystemforasmoothoperation.(保持顺畅的排气)Warmtheinsertbeforeuse,thickenthesectionintheareaofcrack,usetoughenedmaterials.(模具预先升温、在易断裂区域增加壁厚、使用强度更高的原料)Brittlenessofcomponent(脆化)Materialistoohot(原料过度加热)Materialtoocold(原料过度冷却)Mouldsurfacetoocold(模温过Reducethecylindertemperature,shortentheoverallcycletime,machineistoobig,changetoasmallermachine.(降低炮筒温度、缩短周期时间、机台过大、更换小机台)Increasethecylindertemperature,increasethenozzle
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施低)Regroundmaterialinexcessquantity(粉碎料过多)Badqualityregrind(劣质的粉碎料)Rateofinjectiontooslow(射速过低)Originalpartdesigntoothin(设计结构薄弱)Productnotconditioned产品条件不良temperature,decreasethescrewspeed,(增加周期时间、增加喷嘴温度、降低螺杆转速)Increasethemouldtemperature,controltheflowofcoolanttothemold(增加模温、控制模具冷却系统)Avoidusingregrind,uselesspercentageofregrind(避免使用再生料、降低再生料添加比例)Checkregrindforcontamination,moisturedegradedpolymer,checktheregrindmeltindex.(确认再生料被污染、存储条件潮湿导致的降解、测试再生料的熔融指数)Increasetheinjectionrate,maintaintheminimumfeedcushion.(增加注射速度、保持最小的缓冲垫Redesigntheparttostrengthentheweakareas(更新产品结构、加强薄弱区域的结构强度)Conditionthepartaspertherawmaterialmanufacturer'srecommendation.(按照原料供应商的工艺条件生产)Bubblesandvoids(气泡、注塑不足)Internalshrinkageaftertheoutersurfacesets(注塑后内部缩孔).Materialtoohot(原料温度过高)Insufficientventinginthemouldresultinginentrapmentofair(模具排气不良、注塑过程中气泡)Condensationoncavitysurface(缩水)Moistureinmaterial(原料潮湿)Injectionratetofast(射速过快)Restrictiontoflowofmaterial(胶料流动慢)Increasetheinjectionpressure,rate,time,Increasethesizeofthegates,runners,andsprue,increasethescrewforwardtime.(增加注射压力、速度、时间增加水口、流道、分流道尺寸增加螺杆转速时间)Decreasethecylindertemperature,reducethemouldingcycletime.(减少炮筒温度、缩短注塑周期)Provideventsatthepointoffinalfill,decreasetheinjectionspeed,decreasethemouldclampingforce,increasethegatesize,changelocation.(产品注射末端加排气、减小注射速度、减小锁模力、加大水口尺寸或改变位置)Reducetheflowofcoolantthroughthemould,wipethecavitysurfacewithasolvent(降低冷水、使用溶剂擦拭腔体表面)Preheatthematerialthoroughly,usehopperdryer(原料充分干燥)Decreasetheinjectionrate(降低注射速率).Eliminaterestrictions,increasethegateandrunnersize.(加大水口、流道尺寸)Discoloration(污点、变色)Contaminationofmaterial(原料杂质)Wetmaterial(原料潮湿Degradationofmaterial,colorant,additives(染色剂、助剂降解)Degradationofmaterialduetogasentrapment因空气残留而降解Checkthemouldingmaterial,purgetheheatingcylinder,checkthefeedsystemandhopper(确保原料及添加系统的清洁)Preheatthematerial,useahopperdryer(原料充分干燥)Decreasetheoverallmouldingcycle,usesmallmachine,checktheresidencetimeofthematerial,reducethescrewspeed,usecolorantsandadditiveswhichwillwithstandprocessingtemperature.(减少成型周期、使用小机台、确认原料存储时间、确保色剂、助剂高温下不变性)Provideproperventings,relocatethegates,anddecrease
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施Toomuchstressoncomponent(产品内应力太大)Charredmaterialincylinderornozzlecomingoutwithmaterial.(原料炮筒内停留时间过长)themouldclampingforce.(适当的排气、从新设计水口、降低锁模力)Checktheejectionsystem(确认注射周期)Purgethecylindercompletely,removeandcleanthenozzle.(清洁炮筒、喷嘴)Nozzledroppingandfoaming喷嘴流涎、起泡Nozzletemperatureveryhigh(喷嘴温度过高)Materialtoohot(料温过高)Nozzleorificetoolarge.(喷嘴口尺寸过大)Moistureinthematerial.(原料潮湿)Decreasethenozzletemperature,(降低喷嘴温度)Decreasethecylindertemperature,decreasethecylindermouldingtime(降低炮筒温度、降低成型周期)Useanozzlewithasmallorifice,usethereversetapernozzle,useanozzlewithshutoffvalve.(使用小口径喷嘴、使用小锥度喷嘴、使用切断真空管喷嘴)Preheatthematerial,usehopperdryer(充分干燥)Scorching烧焦Materialoverheated原料过热Thermocoupleburntout热电偶烧灼Temperaturecontrollermalfunctioning温控系统故障Regrindnotofgoodquality.再生料质量差Impropershutdownprocedures.不合适的关机程序Moistureinmaterial料湿GasentrapmentRateofinjectiontoofast注射速度过快Constantdegrading持续降解?Reducethecylindertemperature,decreasethemouldingcycletime,andremovedeadspotsinthecylinder,screw,andnozzleassembly.降低料桶温度,减少成型周期,清楚炮筒内的焦料Checkallthermocouplesandchange,ifnecessary.检查所有热电偶,如有必要,进行更换Checkforthestickingofrelays,checkforthecontrollersconnectedtothewrongheaters,checkiftherelaysarefunctioningproperly.检查继电器是否连接、工作正常Segregateandcheckregrindcriticallyforcontamination,excessmoistureordegradedpolymer.隔离并检查再生料,以防混料、料湿或劣质材料混入Purgethemachinethoroughly,cleanthenozzleandstartmouldingafresh彻底清洗设备,清洗喷嘴,重新注塑Preheatthematerial,useahopperdryer预热原料,使用漏斗干燥机Ventthecavitiesproperly,relocatethegateposition,模腔适当通风,重新布置水口位置Decreasetheinjectionspeed,decreasetheinjectionpressure,increasethesizeofgates.降低注射速度,降低注射压力,增加水口大小Useacolorantwhichcanwithstandtheprocessingtemperature,使用耐高温着色剂Weldlines.熔接线Materialtoocold料温太低Mouldtoocold模温太低Injectionpressuretoolow注射压力太低Gasentrapment气体残留Parttoothinatweld产品太薄Capacityofthemachinelower设Increasethecylindertemperature,increasetheoverallmouldingcycle提高料桶温度,增加整个成型周期Increasethemouldtemperature,throttletheflowofcoolantinthemould增加模温,限制模具冷却剂的流动Increasetheinjectionpressure,increasethescrewforwardtime,increasetherateofinjection,increasethesizeofgates,runnersandsprue,usemultiplegatesandrunners.加大注射压力,增加螺杆前行时间,增加注射速度增加水
MOULDINGTROUBLESHOOTINGGUIDE(注塑缺陷处理指南)FAULT缺陷POSSIBLECAUSES可能原因REMEDIES解决措施备能力低Contaminationofmaterial混料Poorflowofmelt熔胶流动性差口、流道、分流道的大小,使用多个水口和流道Provideventincavities,relocatethegate,decreasethemouldclampingforce.在模腔中设通风口,重新布置水口,减少锁模力Thickenthepartattheweldline在熔接线附近增加壁厚Changetoabiggermachine.改用较大设备Checkthematerial,checkthefeedingsystem.检查物料,检查加料系统UseahigherMFImaterial,useanexternallubri
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