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ProcessflowandrawmaterialsofaluminumandaluminumalloyanodicoxidationtintingProcedurespecificationonaluminumandaluminumalloyanodicoxidationtinting1.Procedurespecification(linedrawing)Substrate→Mountedhanging→Degreasing→Alkalineetching→Neutralization→Anodicoxidation→Electrolyticcoloring→Sealing→Electrophoreticcoating→Curing→Unloadingpackaging→Warehousing2.Mountedhanging:2.1preparationsbeforemountedhanging.2.1.1Checktheconductivepartslikeconductivebeamsandbars.Theyshouldberegularlypolished,cleanedorrepaired.2.1.2Getreadyconductivityofaluminumandaluminumwire.2.1.3Checkthepneumatictoolsandrelatedequipment.2.1.4Checkwhetherornotrequirementslikelength,count,color,thicknessontheflowpaperorproductiontasklistareconsistentwiththeorderdrawingandactualmaterials.2.1.5Dependingonthespecifications(sizeofcircumscribedcircle,externalsurfacearea,etc.)todeterminethecountandspace.Tocontrolthepigmentspacingabout1.2timesthanthehorizontalwidthofthematerialshaped,andthewhitematerialspacingabout1timethanthewidth.2.1.6Choosetheappropriaterack,andensurethathooknumberofnegativeandpositivehangersisthesamewiththecountofmaterialsshaped.2.2Mountedhanging:2.2.1Whenhanging,fixthetopsideonefirst,andthenthebottomone,andthenarrangetheremainingsectionsinthemiddle,andtightenthescrews.2.2.2Beforehanging,placingonealuminumsheetbetweenthematerialandaluminumscrewpsothatitcanpreventpoorconductivityimpactingoxidation,coloringandelectrophoresis.2.2.3Whenhanging,itisnotallowedtohangallthematerialsinthelowerorupperrack.2.2.4Thehangedmaterialsshouldreclinemorethan14degreesinordertofacilitateairexhaustinginelectrophoresisorcoloring,andreducetheairbubbles.2.2.5Whenhanging,consideringthefacingofthedecorativesurfaceandgroovetopreventthecolorshading,bubbles,pittingappearinginthedecorativesurface.2.2.6Likesomeflexibleandeasilydeformedmaterials,putonemorerackoraluminumwireinthemiddletopreventfrictionbetweenthematerialsortouchingtankplate,andthatmayabradeorburnthesurface.2.2.7Whenselectingvice-barrack,theplugrodispreferred.Whenusingaluminumbanding,theymustbeevenlyspaced,andtheoutcropsshouldbelessthan25mm.2.2.8Materialswithgreatdisparityofcross-sectionsizeandshapeareprohibitedtohanginthesamerow.2.2.9Whenhangingandhandlingequipment,youmustwearcleangloves,gentlyandwellprotectingthesurface.2.2.10Whenhangingorhandlingequipment,workersshouldstrengthenself-examinationandcross-examination,thefailurematerialsarenon-mounted,andtakeappropriatemeasurestodealwiththesurfacestainedwithoiloraluminumburrs2.2.11Aftereliminatingunqualifiedones,youmustmakethemupintimebyorder.2.2.12Inhangingarea,materialsshouldnotbestoredfortoolongtime,topreventcorrosionofthesurface.2.2.13Fillingthehangingrecordandoxidationprocesscard.Accuratelycalculatingandfillinoxidationofeachlinkedarea,checkingmodels,countandcolorbyordersatanytime.2.2.14Doagoodjobinshiftproceduresandkeeptheworkareaclean.3.Preparationbeforeoxidizedproductionunits:3.1Checkingtheleveloftheliquidintheprocesstank.Accordingtotestreportcard,toadjusttheconcentrationofthebathsolutionandensurethatbathsolutionisalwaysinlinewithtechnicalrequirements.Workersshouldfrequentlysweepthedirtfromthebathsolution.3.2Checkingthevehicle,freezer,rectifiers,circulatingacidpump,waterpump,transfercars,furnaceandotherequipment,anyexceptionshouldbeimmediatelysolved.3.3CheckPH(orconductivity)andcleanlinessinthepurewaterwashingtankandrunningwaterwashingtank.Ifitdoesnotmeetthetechnicalrequirements,workersshouldchangeitandhydratingoverflow.3.4Openthealkalineetching,hotpurewatertank,sealingthesteamorcoolingwatertank;opentheoxidationtank,coloringtankandcoolingsystemofelectrophoresistanktoensuretheuniformityofbathsolutionandtemperaturecomplyingwithrequirements.3.5ChecktheRootsblowers,exhaustblowersandexhaustfans.Beforetheproduction,theyshouldbeopened.3.6Carefullychecktheoxidationprocesscard,specificallyconfirmtheproductionrequirements,andpreparethecolorpalette.4.Generalrequirementsforoxidationsetsoperation:4.1Itisnotallowedtohangtmorethantwohangingseverytime.Andkeepingacertaindistancebetweenthetwohangingstopreventcollisionbetweenthematerials.4.2Whenmaterialshungintoandhungoutofthebathsolution,theymustbeinclinedto30°.4.3Materialsfallingintothetankmustberemovedpromptlyandhungupinrafts,thedamageonesmustbepromptlynotifiedtogroup-to-orderequipmenttomakethemup.4.4Inadditiontoalkalineetchingandcoloring,thesectionsshouldbehungoutafterthebathsolutiondrainedawaytoreducetheflowofwasteandpollution.4.5Whenthehangingmaterialsmustcrossothersections,thetransferringonesmustmaintainthelevelofthedegreetoreducetheflowofliquidandpollutematerialsandconductivebeam.4.6Eachprocessshouldbepromptlyfillintheoxidationprocesscards,andsignthem.5.Degreasing:5.1ProcessParametersCompositionofbathsolution:acidicdegreasingagent2to3%Temperature:roomtemperatureDegreasingtime:1~3min5.2Operatingrequirements:5.2.1Checkprocesscard,makeproductionrequirementsclear.Materialswiththesamecolor,samemodelandsameorderorsimilarspecificationshouldbesuspendedintothedegreasingtanksimultaneouslyorpreferentially,sothatitcan