AMS$2417-G-E-电镀锌镍合金

AEROSPACEMATERIALSPECIFICATIONPlating,Zinc-NickelAlloySAETechnicalStandardsBoardRulesprovidethat:“ThisreportispublishedbySAEtoadvancethestateoftechnicalandengineeringsciences.Theuseofthisreportisentirelyvoluntary,anditsapplicabilityandsuitabilityforanyparticularuse,includinganypatentinfringementarisingtherefrom,isthesoleresponsibilityoftheuser.”SAEreviewseachtechnicalreportatleasteveryfiveyearsatwhichtimeitmaybereaffirmed,revised,orcancelled.SAEinvitesyourwrittencommentsandsuggestions.Copyright©2004SAEInternationalAllrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystemortransmitted,inanyformorbyanymeans,electronic,mechanical,photocopying,recording,orotherwise,withoutthepriorwrittenpermissionofSAE.TOPLACEADOCUMENTORDER:Tel:[phone](insideUSAandCanada)Tel:[phone](outsideUSA)Fax:[phone]Email:[e-mail]:®IssuedJUN1960RevisedJUL2004SupersedingAMS2417F1.SCOPE:1.1Purpose:Thisspecificationcoverstherequirementsforelectrodepositionofazinc-nickelalloyandthepropertiesofthedeposit.1.2Application:Thisplatingprocesshasbeenusedtypicallytoprovidecorrosionresistancetosteelpartswhichmayoperateupto500°F(260°C)(Type1),upto250°F(121°C)(Type2),orupto350°F(177°C)(Type3),butusageisnotlimitedtosuchapplications(See8.9and8.10).1.3Classification:Platingcoveredbythisspecificationisclassifiedasfollows:Type1As-platedwithoutsupplementarytreatmentType2As-platedwithsupplementarychromatetreatmentType3As-platedwithsupplementaryphosphatetreatment(Adhesionbaseforprimer/paint)1.3.1Unlessatypeisspecified,Type2shallbesupplied.1.4Safety-HazardousMaterials:Whilethematerials,methods,applications,andprocessesdescribedorreferencedinthisspecificationmayinvolvetheuseofhazardousmaterials,thisspecificationdoesnotaddressthehazardsthatmaybeinvolvedinsuchuse.Itisthesoleresponsibilityoftheusertoensurefamiliaritywiththesafeandproperuseofanyhazardousmaterialsandtotakethenecessaryprecautionarymeasurestoensurethehealthandsafetyofallpersonnelinvolved.AMS2417GSAEAMS2417G-2-2.APPLICABLEDOCUMENTS:Theissueofthefollowingdocumentsineffectonthedateofthepurchaseorderformsapartofthisspecificationtotheextentspecifiedherein.Thesuppliermayworktoasubsequentrevisionofadocumentunlessaspecificdocumentissueisspecified.Whenthereferenceddocumenthasbeencanceledandnosupersedingdocumenthasbeenspecified,thelastpublishedissueofthatdocumentshallapply.2.1SAEPublications:AvailablefromSAE,400CommonwealthDrive,Warrendale,PA15096-0001or(Baking)ofSteelParts2.2ASTMPublications:AvailablefromASTM,100BarrHarborDrive,P.O.BoxC700,WestConshohocken,PA19428-2959or(Fog)ApparatusASTMB253GuideforPreparationofAluminumAlloysforElectroplatingASTMB487TestMethodforMeasurementofMetalandOxideCoatingThicknessesbyMicroscopicalExaminationofaCrossSectionASTMB499TestMethodforMeasurementofCoatingThicknessesbytheMagneticMethod:NonmagneticCoatingsonMagneticBasisMetalsASTMB504TestMethodforMeasurementofThicknessofMetallicCoatingsbytheCoulometricMethodASTMB568TestMethodforMeasurementofCoatingThicknessbyX-RaySpectrometryASTMB571TestMethodsforAdhesionofMetallicCoatingsASTME376PracticeforMeasuringCoatingThicknessbyMagnetic-FieldorEddy-Current(Electromagnetic)ExaminationMethodsASTMF519TestMethodforMechanicalHydrogenEmbrittlementEvaluationofPlatingProcessesandServiceEnvironments3.TECHNICALREQUIREMENTS:3.1Preparation:3.1.1Steelpartshavingahardnessof40HRCorhigherandwhichhavebeenstraightened,formed,orgroundafterheattreatmentshallbesuitablystressrelievedbeforecleaningandplating.Temperaturestowhichpartsareheatedshallbesuchthatmaximumstressreliefisobtainedwithoutreducinghardnessofpartsbelowdrawinglimits,but,unlessotherwisespecified,notlessthan275°F±10(135°C±6)fornotlessthanfivehoursforparts55HRCorgreater,or375°F±25(191°C±14)fornotlessthanfourhoursforotherparts.AMS2417GSAEAMS2417G-3-3.1.2Partsshallhavecleansurfacesfreeofwaterbreakpriortoimmersionintheplatingsolution.3.1.3Electricalcontactbetweenthepartsandpowersourceshallbemadetopreventchemicalorimmersiondeposition,electricalarcing,andoverheating.Ifpartsaretobeplatedallover,contactpointsshallbelocatedwherespecifiedorwhereagreeduponbypurchaserandprocessor.Ifpartsarenotrequiredtobeplatedallover,contactpointsshallbelocatedonareasonwhichplatingisnotrequiredorisoptional.3.1.4Priortodepositionofthezinc-nickelalloy,partsmaybegivenanelectrodepositednickelstrike,ormaybedryorwetabrasiveblasted.Mechanicalfinishing,ifemployed,shallbecompletedpriortoapplicationofanickelstrike,whenused,andshallbeaccomplishedinamannerthatwillnotaffecttheappearanceorqualityofthefinishedpart.3.2Procedure:3.2.1Thezinc-nickelalloyplateshallbeelectrodepositedfromasuitableelectrolyte.Stress-reducingagentsshallnotbeusedunlessapprovedbypurchaser.3.2.1.1AluminumalloysmaybezincatetreatedinaccordancewithASTMB253beforeplating.3.2.1.2PartswhichspecifyType2platingshallbegivenasupplementarychromateconversioncoating,whichwillmeettherequirementsof3.4.4.2.An