TL261-EN-2003

Klass.-Nr.50241September2003PaintingonCoilSpringsRequirementsforSurfaceProtectionTL261KonzernnormTypes:A,B,C,DDescriptors:paint,painting,paintfinish,coilspringPage1of2Fachverantwortung/ResponsibilityNormung/Standards(EZTD,1733)K-QS-32JöckTel:-28506WiesnerTel:[phone]SobanskiConfidential.Allrightsreserved.NopartofthisdocumentmaybetransmittedorreproducedwithoutthepriorwrittenpermissionofaStandardsDepartmentoftheVolkswagenGroup.Partiestoacontractcanonlyobtainthisstandardviatheresponsibleprocurementdepartment.VOLKSWAGENAGNormvorAnwendungaufAktualitätprüfen/Checkstandardforcurrentissuepriortousage.FormFE41-01.03ChangesThefollowingchangeshavebeenmadeascomparedtoTL261,1992-05:─Standardrestructured─Referencedstandardsupdated─Noteonpaintingthesuspensionpoint(footnote1)inTable1changedPreviousissues1976-11;1977-12;1987-10;1992-051ScopeThisTechnicalSupplySpecification(TLstandard)definestherequirementsforsurfaceprotectionforpaintfinishesoncoilspringsforthefrontandrearaxlesuspension,infourtypes.2DesignationForexample,paintfinishaccordingtoTL261,typeA3Requirements3.1GeneralrequirementsApprovaloffirstsupplyandchangesaccordingtoVW01155.AvoidanceofhazardoussubstancesaccordingtoVW91101.Therequiredminimumforcompletetestingis4coilsprings.Thepaintfinishmustbefreeofpores,cracksandforeignmatterinclusionsthatimpairthecorro-sionprotection.Thecoatingmustadherefirmlytothebasematerial.Theproductionprocessmustbedesignedandcontrolledsothatthefunctionalcharacteristicsofthefinishedpartarenotim-paired.3.2StructureandcoatingthicknessSeeTable1.3.3CorrosionresistanceThirtycyclesaretestedinthecorrosioncycletest(3-phasetest)accordingtoPV1210.Corrosionontheendsofthecoilspringsupto2.5mmfromtheedgeandonthe1stturnofthesuspensionarenottakenintoconsideration.Coilspringsthatareequippedwithadampinghosearetestedwiththehose.Requirements:basemetalcorrosionmax.Ri1.Bubbleformationisnotpermitted.ScribinglineaccordingtoDINENISO7253,section8.5,andDINENISO4628-8:rustcreepWb≤2.5mm.TheEnglishtranslationisbelievedtobeaccurate.IncaseofdiscrepanciestheGermanversionshallgovern.Page2TL261:2003-09Table1-StructureandcoatingthicknessTypeATypeBTypeCTypeDPretreatmentIronorzincphos-phatedZincphosphatedShot-peenedandzincphosphatedPaintfinishPrimer(yellow)anddippaintECpaint,anodicdippaintECpaint,heavycoatcathodicdippaintPowderpaint1)Coatingthick-ness40µm30µm30to50µm60to160µm1)Thesuspensionpointofthepaintinghookmustbeinanunstressedareauptomax.180°fromtheendofthespringandmustberepaintedwithanair-dryingrepairpaint.3.4Behavioratlowtemperatures(onlyfortypesCandD)Test:24hagingat(-40±3)°C.Afteraging,animpacttestisconductedatlowtemperaturesbasedonDINISO4532(using90Ntestingforceonarigidbaseplate).Requirement:noflakingorcrackinginthecoat.Puncturesdowntothebasematerialupto3mmindiameterarepermissible.4Referencedstandards*)PV1210BodyandAdd-OnParts;CorrosionTestVW01155VehicleSupplyParts,General;ApprovalofFirstSupplyandChangesVW91101VehicleEnvironmentalStandard;VehicleParts,Materials,OperatingFluids;AvoidanceofHazardousSubstancesDINISO4532VitreousandPorcelainEnamels–DeterminationoftheResistanceofEnamelledArticlestoImpact–PistolTestDINENISO4628-8PaintsandVarnishes-EvaluationofDegradationofCoatings;DesignationofQuantityandSizeofDefects,andofIntensityofUniformChangesinAp-pearance-Part8:EvaluationofCorrosionaroundaScribeDINENISO7253PaintsandVarnishes–DeterminationofResistancetoNeutralSaltSpray(Fog)*)Inthissectionterminologicalinconsistenciesmayoccurastheoriginaltitlesareused.