2023年全國碩士研究生考試考研英語一試題真題（含答案詳解+作文范文）_第1頁
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1、ProcessflowrawmaterialsofaluminumaluminumalloyanodicoxidationtintingProcedurespecificationonaluminumaluminumalloyanodicoxidationtinting1.Procedurespecification(linedrawing)Substrate→Mountedhanging→Degreasing→Alkalineetch

2、ing→Neutralization→Anodicoxidation→Electrolyticcoling→Sealing→Electropheticcoating→Curing→Unloadingpackaging→Warehousing2.Mountedhanging:2.1preparationsbefemountedhanging.2.1.1Checktheconductivepartslikeconductivebeamsba

3、rs.Theyshouldberegularlypolishedcleanedrepaired.2.1.2Getreadyconductivityofaluminumaluminumwire.2.1.3Checkthepneumatictoolsrelatedequipment.2.1.4Checkwhethernotrequirementslikelengthcountcolthicknessontheflowpaperproduct

4、iontasklistareconsistentwiththederdrawingactualmaterials.2.1.5Dependingonthespecifications(sizeofcircumscribedcircleexternalsurfaceareaetc.)todeterminethecountspace.Tocontrolthepigmentspacingabout1.2timesthanthehizontalw

5、idthofthematerialshapedthewhitematerialspacingabout1timethanthewidth.2.1.6Choosetheappropriaterackensurethathooknumberofnegativepositivehangersisthesamewiththecountofmaterialsshaped.2.2Mountedhanging:2.2.1Whenhangingfixt

6、hetopsideonefirstthenthebottomonethenarrangetheremainingsectionsinthedletightenthescrews.2.2.2Befehangingplacingonealuminumsheetbetweenthematerialaluminumscrewpsothatitcanpreventpoconductivityimpactingoxidationcolingelec

7、trophesis.2.2.3Whenhangingitisnotallowedtohangallthematerialsinthelowerupperrack.2.2.4Thehangedmaterialsshouldreclinemethan14degreesindertofacilitateairexhaustinginelectrophesiscolingreducetheairbubbles.2.2.5Whenhangingc

8、onsideringthefacingofthedecativesurfacegroovetopreventthecolshadingbubblespittingappearinginthedecativesurface.2.2.6Likesomeflexibleeasilydefmedmaterialsputonemerackaluminumwireinthedletopreventfrictionbetweenthematerial

9、stouchingtankplatethatmayabradeburnthesurface.2.2.7Wheningvicebarracktheplugrodispreferred.Whenusingaluminumbingtheymustbeevenlyspacedtheoutcropsshouldbelessthan25mm.2.2.8Materialswithgreatdisparityofcrosssectionsizeshap

10、eareprohibitedtohanginthesamerow.2.2.9WhenhanginghlingequipmentyoumustwearcleanglovesgentlywellDegreasingtime:1~3min5.2Operatingrequirements:5.2.1Checkprocesscardmakeproductionrequirementsclear.Materialswiththesamecolsam

11、emodelsamedersimilarspecificationshouldbesuspendedintothedegreasingtanksimultaneouslypreferentiallysothatitcanfacilitatetheoperationthepostprocedure.5.2.2Whenthedegreasingisfinishedthematerialsshouldbehungoutofthetankpre

12、ventingthesfromthesurface.5.2.3AfterdegreasingthesurfaceshouldbewelldistributedwetthematerialsshouldbewashedbyLevel2waterthenturnedintothealkalineetchingprocess.6.Alkalineetching:6.1Processparameters:Compositionofbathsol

13、ution:plainsurfacealkalineetchingssurfacealkalineetchingNaOH:40~50gl45~60glAdditives(NaOH):112~1151618Temperature:40~45℃45~55℃Alkalineetchingtime:1~3min10~30min6.2Operatingrequirements:6.2.1Whenalkalineetchingthefceddrau

14、ghtblowersexhaustfansshouldbeopened.6.2.2Whenalkalineetchingisfinishedmaterialsshouldbehungoutassoonaspossiblefinishingsheddingimmediatelytransferringtothetankwashingsothatitcanpreventstrayingmarkingfromthesurface.6.2.3S

15、trictlycontrolalkalineetchingprocessparameterstoensureunifmqualityofthesurfaceafteralkalineetching.6.2.4PostalkalineetchingmaterialsmustbewashedbyLevel2overflow.Theremainingalkalineliquidshouldbefullyclearedawaysothatthe

16、raffinatecan’tpolluteothertanks.7.Neutralization:7.1Processparameters:Compositionofbathsolution:HNO3:120~150glTanktemperature:roomtemperatureNeutralizingtime:2~5min7.2Operatingrequirements:7.2.1.Whenneutralizingthemateri

17、alsshouldbemovedupdownantitiltfullyneutralizingexhaustliquintheholeremoveappearingdust.7.2.2PostneutralizingmaterialsmustbewashedbyLevel2overflowturntotheanodizingtank.7.2.3Thesurfacequalityinspectionshouldbestrengthened

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