【astm標準】d 1730 - 09 (2014)

1、Designation:D1730?09(Reapproved2014)StardPracticesfPreparationofAluminumAluminumAlloySurfacesfPainting1ThisstardisissuedunderthefixeddesignationD1730thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladop

2、tioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.ThisstardhasbeenapprovedfusebyagenciesoftheU.S.Depar

3、tmentofDefense.1.Scope1.1Thesepracticescoverfourtypesoftreatmentfpreparationofaluminumaluminumalloysurfacesfpaintingasfollows:1.1.1TypeA—SolventCleaning.1.1.2TypeB—ChemicalTreatments.1.1.3TypeC—AnodicTreatments.1.1.4Type

4、D—MechanicalTreatments.Thesefourtypescoveranumberofproceduresasdescribedherein.1.2Variationsinsurfacetreatmentproduceendconditionswhichdifferwhichdonotnecessarilyyieldidenticalresultswhenpaintsareapplied.Servicecondition

5、swilldictatethetypeofsurfacepreparationthatshouldbeedalthoughthequalityproducedbyanyindividualmethodmayvarywithdifferentalloys.1.3Thisstardmayinvolvehazardousmaterialsoperationsequipment.Thisstarddoesnotpurpttoaddressall

6、ofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:2

7、D609PracticefPreparationofColdRolledSteelPanelsfTestingPaintVarnishConversionCoatingsRelatedCoatingProducts2.2MilitaryStards:3MILA8625AnodicCoatingsfAluminumAluminumAlloysMILDTL5541ChemicalConversionCoatingsonAluminumAlu

8、minumAlloysMILM10578BMetalConditionerRustRemover(PhosphicAcidType)MILP15328bBCoatingCompound–MetalPretreatmentResinResistant2.3FederalSpecification:3TTC490ChemicalConversionCoatingsPretreatmentsfFerrousSurfaces(Basefgani

9、cCoatings)3.TypeA—SolventCleaning3.1Solventcleaningdoesnotdisturbthenaturaloxidefilmonthemetalmayproveadequatefsomeapplicationssuchasambientindoverymildserviceconditions.Threemethodsmaybeemployedasfollows:3.1.1Method1Man

10、ualSwabbingDipWashingwithasolventsuchasmineralspiritshighflasksolventnaphtha.Withthismethoditisextremelydifficulttopreventaccumulationofcontaminantsontheswabinthesolvent.Thismethodisonlyrecommendedwhenothertreatmentsarei

11、mpractical.3.1.2Method2SolventSprayCleaninginaccdancewithMethodAProcedure1ofPracticeD609.3.1.3Method3VapDegreasinginspecialequipmentemployingtrichloethylenevapinaccdancewithMethodAProcedure2ofPracticeD609.4.TypeB—Chemica

12、lTreatmentsNOTE1—Materialsproceduresemployedinthesemethodsoftreatmentareavailablefromanumberofsourcesasproprietarycompoundsmethods.ionmaybemadefromavailablesources.Thehexavalentchromiummethodsgivenarenotrecommendedashexa

13、valentchromiumisaknowncarcinogen.4.1Method1AlkalineCleaners—Alkalinesolutionssuchascausticsodaetchthemetalthusdestroyingthenaturaloxidefilm.Theyarefollowedbyanacidtreatmentpreferablynitricacidphosphicacid.Theyshallnotbeu

14、sedonassembledstructures.Inhibitedalkalinecleanersaresometimesemployedasapretreatmenttoremovegreaseoilpritoanacidtreatment.Inhibitedalkalinecleanersdonotetchthe1ThesepracticesareunderthejurisdictionofASTMCommitteeB08onMe

15、tallicInganicCoatingsisthedirectresponsibilityofB08.07ConversionCoatingsonChromateConversionCoatings.CurrenteditionapprovedNov.12014.PublishedNovember2014.iginallyapprovedin1960.Lastpreviouseditionapprovedin2009asD173009

16、.DOI:10.1520D173009R14.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.3AvailablefromStardization

17、DocumentsderDeskDODSSPBldg.4SectionD700RobbinsAve.PhiladelphiaPA191115098Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1Anodictreatmentsshouldnotbeusedonassembliesofdissimila

18、rmetals.Thetwoproceduresareasfollows:NOTE7—TreatmentsconfmingtoMethods12ofTypeCcomplywiththerequirementsofU.S.MilitarySpecificationMILA8625.5.2Method1SulfuricAcidAnodic—Thistreatmentconsistsinmakingtheparttheanodeina15%s

19、ulfuricacidelectrolyte(byweight)applyingcurrentatapotentialofabout16to18Vacurrentdensityof12Aft2untildesiredthicknessofcoatingisobtained.Afterrinsingincoldwaterthecoatingissealedf10minbytreatmentinaboilingsolutionof5%pot

20、assiumdichromate.Thismethodisnotrecommendedwheredangerofacidentrapmentisencountered.5.3Method2ChromiumTrioxideAnodic—Thistreatmentconsistsinmakingtheparttheanodeina10weight%chromiumtrioxideelectrolyteatatemperatureof100F

21、(38C)applyingapotentialof40Vfaperiodof30to60min.Afterfirstrinsingincoldwaterthecoatingisfinallyrinsedinwaterat150F(66C)minimumdriedanoptionalfinalsealingtreatmenttoobtainmaximumprotectionisobtainedbyimmersioninasolutionc

22、ontaining0.01gchromiumtrioxideperlitreofwater(0.00131gal)atatemperatureof208to212F(98to100C)f5min.6.TypeD—MechanicalTreatments6.1Method1HPowerWireBrushingotherabrasivetreatment.Wirebrushingeitherbyhpowerroughensthesurfac

23、eofthemetalmechanicallyimprovestheanchagefsuperimposedpaintfilms.Thedisadvantagesarethatthenaturaloxidefilmonthemetalisdisruptedoilgreasefilmsotherfeignmatterarenotcompletelyremoved.6.2Method2Sblastingwhereemployedonalum

24、inumitsalloysmustbecarriedoutatrelativelylowpressureswithafinesilicas.Itroughensthesurfacemechanicallyimprovestheanchagefpaintfilmsbutdestroysthenaturaloxidefilmonthemetal.Whereuseditshouldbefollowedbyaninhibitivechemica

25、ltreatment.7.Keywds7.1aluminumpretreatmentfpaintingsurfacetreatmentASTMInternationaltakesnopositionrespectingthevalidityofanypatentrightsassertedinconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpresslyadv

26、isedthatdeterminationofthevalidityofanysuchpatentrightstheriskofinfringementofsuchrightsareentirelytheirownresponsibility.Thisstardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteemustbereviewedeveryfiveyear

27、sifnotrevisedeitherreapprovedwithdrawn.YourcommentsareinvitedeitherfrevisionofthisstardfadditionalstardsshouldbeaddressedtoASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsib

28、letechnicalcommitteewhichyoumayattend.IfyoufeelthatyourcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntotheASTMCommitteeonStardsattheaddressshownbelow.ThisstardiscopyrightedbyASTMInternational100BarrHarbDr

29、ivePOBoxC700WestConshohockenPA194282959UnitedStates.Individualreprints(singlemultiplecopies)ofthisstardmaybeobtainedbycontactingASTMattheaboveaddressat6108329585(phone)6108329555(fax)(email)throughtheASTMwebsite(www.astm