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1、STANDARDSAustraliaSstandardsNEWZEA1.ANDTEMANATAiniKANOAOAOTEAROAAustralian/NewZealandStandardTmMetallicandotherinorganiccoatingsElectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel(ISO2081:2018,MOD)ThisJointAustraIianZNewZealandStandardTmwaspreparedbyJointTechnicalCommitteeMT-009,Meta
2、lFinishing.ltwasapprovedonbehalfoftheCouncilofStandardsAustraliaon03March2023andbytheNewZealandStandardsApprovalBoardon01March2023.ThisStandardwaspublishedon17March2023.AustralianAustralianAustralianAustralianAustralianAluminiumCouncilChamberofCommerceandIndustryIndustryGroupPaintManufacturersFedera
3、tionSteelInstituteThefollowingarerepresentedonCommitteeMT-009:AustralasianCorrosionAssociationAustralasianInstituteofSurfaceFinishingBuildingResearchAssociationofNewZealand(BRANZ)BureauofSteelManufacturersofAustraliaCSIROEngineersAustraliaGalvanizersAssociationofAustraliaMaterialsAustraliaUniversity
4、ofAuckland(NewZealand)ThisStandardwasissuedindraftformforcommentasDRAS/NZS1789:2022.KeepingStandardsUhtO-dateEnsureyouhavethelatestversionsofourpublicationsandkeepup-to-dateaboutAmendments,Rulings,Withdrawals,andnewprojectsbyvisiting:WWW.standards.ora.auwww.standards.govt.nzISBN9781761390913Australi
5、an/NewZealandStandardTMMetallicandotherinorganiccoatingsElectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel(ISO2081:2018,MOD)OriginatedasASK144-1963,ASCK8-1963andASCK101965.PreviouseditionsAS17891984andAS17911986.Revised,amalgamatedandredesignatedasAS17892003.Jointlyrevisedandredesig
6、natedasAS/NZS1789:2023.COPYRIGHTISO2023AllrightsreservedStandardsAustralia1.imited/theCrowninrightofNewZealand,administeredbytheNewZealandStandardsExecutive2023Allrightsarereserved.Nopartofthisworkmaybereproducedorcopiedinanyformorbyanymeans,electronicormechanical,includingphotopying,withoutthewritt
7、enpermissionofthepublisher,unlessotherwisepermittedundertheCopyrightAct1968(Cth)ortheCopyrightAct1994(NewZealand).PrefaceThisStandardwaspreparedbytheJointStandardsAustraliaZStandardsNewZealandCommitteeMT-009,MetalFinishing,tosupersedeAS1789:2003,Electroplatedzinc(electrogalvanized)coatingsonferrousa
8、rticles(batchprocess).Theobjectiveofthisdocumentistospecifyrequirementsforelectroplatedcoatingsofzincwithsupplementarytreatmentsonironorsteel.ltincludesinformationtobesuppliedbythepurchasertotheelectroplater,andtherequirementsforheattreatmentbeforeandafterelectroplating.Thisdocumentisnotapplicableto
9、zinccoatingsapplied一(a) tosheet,striporwireinthenon-fabricatedform;(b) toclose-coiledSpringsjor(C)forpurposesotherthanprotectiveordecorative.Thisdocumentdoesnotspecifyrequirementsforthesurfaceconditionofthebasismetalpriortoelectroplatingwithzinc.However,defectsinthesurfaceofthebasismetalcanadversely
10、affecttheappearanceandperformanceofthecoating.Thecoatingthicknessthatcanbeappliedtothreadedcomponentscanbelimitedbydimensionalrequirements,includingclassorfit.Thisdocumentisanadoptionwithnationalmodifications,andhasbeenreproducedfrom,ISO2081:2018Metallicandotherinorganiccoatings-Electroplatedcoating
11、sofzincwiihSupplementaiytreatmentsonironorsteel.ThemodificationsareadditionalrequirementsandaresetoutinAppendixZZ,whichhasbeenaddedattheendofthesourcetext.AppendixZZliststhemodificationstoISO2081:2018,fortheapplicationofthisdocumentinAustraliaandNewZealand.AsthisdocumenthasbeenreproducedfromanIntern
12、ationaldocument,afullpointsubstitutesforacommawhenreferringtoadecimalmarker.AustralianorAustralianZNewZealandStandardsthatareidenticaladoptionsofinternationalnormativereferencesmaybeusedinterchangeably.RefertotheonlinecatalogueforinformationonspecificStandcirds.Theterms11normative,and11informativear
13、eusedinStandardstodefinetheapplicationoftheappendicesorannexestowhichtheyapply.A,normativeappendixorannexisanintegralpartofaStandard,whereasant4infbrmative,appendixorannexisonlyforinformationandguidance.ContentsNationalForewordivForewordvIntroductionVi1 Scopei2 Normativereferences3 Terms,definitions
14、,abbreviatedtermsandsymbols23.1 Termsanddefinitions23.2 Abbreviatedterms23.3 Symbols24 Informationtobesuppliedbythepurchasertotheelectroplater24.1 Essentialinformation24.2 Additionalinformation35 Designation35.1 General35.2 Designationspecification35.3 Designationofthebasismaterial45.4 Designationof
15、heattreatmentrequirements46 Requirements56.1 Appearance56.2 Thickness56.3 Trivalentchromiumconversioncoatingsandothersupplementarytreatments6.4 Adhesionofzincandtrivalentchromiumconversioncoatings6.5 Acceleratedcorrosiontesting6.5.1 Neutralsaltspraytest6.5.2 Corrosionrating6.6 Stressreliefheattreatmentsbeforecleaningandmetaldeposition6.7 Hydrogen-embrittlement-reliefheattreatmentsafterelectroplating7 Sampling7Annex A (normative)Designationofsupplementarytreatments8Annex B (normative)Measurementofaveragethicknessofcoatingonsmallarticles10Bibliography11AppendixZZ(n
