静电喷涂5大影响因素

POWDERCOATINGAPPLICATION ProcessControl TheBigFive TrainingObjectives Gainabetterunderstandingof Thepowdercoatingapplicationprocess粉末喷涂过程Processmonitoringandcontrol过程监督和控制Themostcommoncausesofapplicationproblems问题发生的主要原因Howtorecognizeanapplicationproblem怎样识别问题Howtopreventthemostcommonproblems怎样防止常见问题 Monitor Control TheProcessMustbeConstantlyMONITOREDandCONTROLLED MONITOR Observation MeasurementandTesting监督 观察 测量和试验ProcessControlEngineer控制过程的工程师TeamLeader领导者Process ChemicalTechs技术 化学技术人员Operators操作工CONTROL AdjustmentandMaintenance控制 调整和维护TeamLeader领导者Process ChemicalTechs技术 化学技术人员MaintenancePersonnel维护工 The BigFive TheFiveCriticalAspectsofthePowderCoatingProcess COMPRESSEDAIRQUALITY压缩空气质量PARTSCLEANINGANDPRETREATMENT工件的清洁和预处理PARTSGROUNDING工件接地POWDERCHARGING粉末充电POWDERCURING粉末烘干 1 CompressedAirQuality压缩空气质量 CompressedAirQualityDefinition NOOil 0 1PPM 0 1mg m3 油百万分之0 1NOWater 38 Fdewpoint 1 3g m3 水露点NOParticulates 0 3microns颗粒 0 3微米 CLEANAIR 干净的空气 CompressedAirMustBeCleanAndDry压缩空气必须干净和干燥 CompressedAirQualityPotentialProblems CoatingDefects涂层缺陷Cratersandfisheyes裂纹Pinholes小孔Adhesionfailure吸附性差Powderagglomerations粉末结块EquipmentDamage设备问题Impactfusioninpumps hosesandnozzles泵 软管和喷嘴连接效果差Blindingofprimaryfiltercartridges初级烧结板堵塞Blindingoffluidizingmembranesinhopper collector流化膜堵塞ObscuredviewofUVfiredetectionsensors紫外线感应装置被挡 CompressedAirQualityMonitorandControl MonitorOilorwatervaporvisiblefromblow guns喷枪上可看见油和水蒸汽Oilorwaterpresentatdrainsanddriplegsnearbooth监测粉房旁边的排水管和水过滤器Oilorwaterresiduevisibleinair flowmeters气流计上能看见油和水的残留物 Gummy powderresidueonUVDetectorwindows紫外线探测仪玻璃上有粘性粉末残留物Difficulttofluidizepowder流化粉末Poorpowdercontainmentbybooth被粉房污染粉末ControlDrainfilters trapsanddrip legsregularly排水管 存水杯 水过滤器Replacecoalescingandparticulatefilterelements更换过滤器部件Maintainthecompressorandair dryer保持空气压缩器和空气干燥器 PartsCleaning Pretreatment工件清洁和预处理 PartsCleaning PretreatmentDefinition NoOilyorPowderyResidues没有油性或者粉末状残留物NoPolishingCompound没有光亮剂混合物NoMetalChips没有金属碎片 EffectiveDe Oxidizing去除氧化物AdequatePhosphate orChromate Deposition适当酸洗处理ThoroughRinsing彻底清洗 CLEANPART 干净的工件 PROPERPRETREATMENT PartsCleaning PretreatmentPotentialProblems AppearanceDefects外表缺陷Cratersandfisheyes裂痕Pinholes针眼PoorSmoothness不光滑PerformanceDeficienciesAdhesionfailure吸附性差Reducedcorrosionprotection抗腐蚀性降低 Pull away Incornersorinspots PartsCleaning PretreatmentMonitorandControl MonitorWater Breakfreesurface没有水痕的表面Uniformchromatecolor统一的颜色Whitetowelwipe白色纸巾擦拭没有脏物Titration滴定试验ControlAdjustconcentrations调整浓度Dumpandrecharge清槽 PartsGrounding工件接地 Part Hanger PARTSGROUNDING Track Rotator Trolly Conveyor PartsGroundingDefinition Noelectricalresistance Betweenthepartandearthground没有电阻 工件和地面之间Zeroohmsat1000vDC Measured1000V直流电0欧姆 测量的数据 Ateachcontactpointbetweenpartandconveyor在每一个工件和输送链接触点 Throughthepowderapplicationzone粉末喷涂区 GROUNDEDPART PartsGroundingPotentialProblems CoatingEfficiency涂层效率Poortransfer输送缓慢Slowfilmbuild涂层达不到要求Lightcoverageoverall涂层薄DifficulttocoatFaradayCageareas法拉第效应Excessivepowderusageinspray to wastesituations粉末浪费Safety安全Ignitionsource点火源Shockhazard触电 PartsGroundingMonitorandControl MonitorMeasureresistancetoground测量接地电阻Firedetectionsystemdisplaysalertoralarm防火系统显示和警报Hearorseearcingatcontactpoints接触点有打火现象Operatorsgettingshocked操作者被电Poortransferefficiency slowfilmbuildandlightcoverageDifficultycoatingFaradayCageareasBack ionization电离ControlProperdesignofcontactpointsonracksandhangers钩子 架子上接触点有着适当的设计Effectivehangerandrackburn offorstrippingprocedures PowderCharging粉末充电 H VCONTROLLER EARTHGROUND CABLE 110VAC GUN CONVEYOR PART HANGER LOAD TheElectrostaticChargeOnThePowderParticles ELECTRODE The ELECTROSTATICCIRCUIT CURRENTFLOW CURRENTFLOW PowderChargingDefinition CHARGEDPOWDER Adequateelectrostaticchargeonthepowderparticles适当地对粉末颗粒施以静电Sufficientvolumeofchargedpowderparticles足够的静电颗粒 PowderChargingPotentialProblems CoatingEfficiency涂层效率Poortransfer输送缓慢Slowfilmbuild涂层形成缓慢Lightcoverageoverall整体涂层DifficultycoatingFaradayCageareasExcessivepowderusageinspray to wastesituations过多的粉末 PowderChargingMonitorandControl MonitorReducedE S wrapPoortransferefficiency slowfilmbuildandlightcoverageDifficultycoatingFaradayCageareasMeasureE S outputofthegunsregularly检查出粉量ControlRepairorreplaceguns cablesandpowersuppliesasnecessary必要时修理 更换枪 线路 和电源 FARADAYCAGEPHENOMENON PowderCuring粉末烘干 PowderCuringDefinition TechnicalCompletemolecularcross linking Maximumcross linkdensityNoremainingunreactedsitesPracticalCured SUFFICIENTLY toprovideallphysicalpropertiesandperformancecharacteristicsrequiredbytheenduser FULLCURE PowderCuringPotentialProblems PhysicalPropertiesandPerformanceCharacteristics物理性能和工作特性Chemicalandsolventresistance化学Flex impactandchipresistance弯曲 冲击Scratchandabrasionresistance磨损WeatheringandUVresistance风化 紫外线Adhesion粘附Corrosionprotection防腐蚀 PowderCuringMonitorandControl MonitorSolventResistance溶解电阻FlexandImpactCharacteristicsSaltFogtestresults盐雾测试Col