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inc/NickelAlloyCoatingsSurfaceProtectionRequirements锌/镍-合金涂覆层表面保护要求TL244-2010TL244第1页共17页Previousissues以前的版本TL244:1987-10,1992-05,1993-11,1995-12,2002-05,2004-12,2006-08,2007-02Changes更改ThefollowingchangeshavebeenmadecomparedwithTL244:2007-02:–Scopesupplementedbycomponents≤1200MPawithheattreatment–Ofl-r647andOfl-r648added–TableofsurfaceprotectiontypescontainingCr(VI)(formerlyTable2)removed–Figures1and2added–Testacc.toPV1209,PV1200,andPV1210added–Requirementforhomogeneousstructureadded–Upperlimitofnickelcontentchanged–Notesontestingregardinglayerthicknessmeasurement(formerlySection4)addedinSection3.9–RequirementsinSection3.11changed–Referencedstandardsupdated–Standardrestructured相对于TL244：2007-02版本，已作了如下更改：（1）补充了热处理后零件的抗拉强度≦1200Mpa部分；（2）添加了Ofl-r647和Ofl-r648两种涂覆方法；（3）原表2中关于含铬的表面保护类型已删除；（4）添加了图1和图2；（5）添加了PV1209,PV1200和PV1210三种测试依据；（6）镀层表面形态的要求有所增加；（7）镍的上限值有所改变；（8）原第4条关于镀层厚度的测量的内容加入到3.9部分；（9）原3.11部分的要求有所改变；（10）参考标准有更新；（11）标准重组。1Scope范围ThisTechnicalSupplySpecification(TL)specifiesrequirementsforelectrolyticallydepositedandCr(VI)-freepost-treatedzinc/nickelalloycoatingsonferrousmaterialsandsteelpartswithatensilestrengthRm≤1000MPaaccordingtocodeletterrspecifiedinVolkswagenstandardVW13750.Itfurthermoredefinesapplicationlimitsinc/NickelAlloyCoatingsSurfaceProtectionRequirements锌/镍-合金涂覆层表面保护要求TL244-2010TL244第2页共17页andexceptionsfortensilestrengthvalues1000MPa.本标准规定了抗拉强度为Rm≦1000Mpa（按VW13750的特征字母r）的铁材料和钢制件上的电解离析和无铬含量（VI）后处理的锌/镍合金涂覆层的要求。此外还定义了抗拉强度值大于1000Mpa时的应用极限。ThealloycoatingsdefinedinthisstandardmustnotbeusedforsteelpartswithatensilestrengthRm1200MPaandasurfacehardness370HV.ExceptionsmaybemadeforcomponentswithatensilestrengthRmbetween1000MPaand1200MPa.However,heattreatmentacc.ToDINENISO4042isrequiredinthesecases.本标准定义了合金涂覆不适用于抗拉强度Rm1200Mpa和表面硬度370HV的钢制件。而且适用于抗拉强度值在1000Mpa和1200Mpa之间的钢制件时，必须按DINENISO4042作热处理。Thesecoatings,usedasheavy-dutycorrosionprotection(protectionclass6),areespeciallysuitableforcomponentsandsystemsofthreadedjointsforwhich,besidesanincreasedcorrosionload,atemperatureloadofupto150°C(enginecompartmentandbrakearea)istobeexpected.ThesilvercoloredcoatingsOfl-r642,Ofl-r643,Ofl-r645andOfl-r647areparticularlysuitableforconductingconnections(groundconnections).这些当作坚固防腐层（稳定等级为6）的涂覆层，亦特别适用于除了腐蚀负荷增加和温度负荷增加至150°C（例如：发动机室和刹车系统）之外的部件以及螺栓拧紧系统。银色涂覆层（例如：Ofl-r642,Ofl-r643,Ofl-r645和Ofl-r647）特别适用于导线连接（接地线连接）。Inparticular,thesecoatingsaresuitableforfastenerswithdrivingrecesstoavoidcloggingofforceapplicationpoints.这些涂覆层特别适用于内部传动的紧固元件，以避免附加的施力作用。Duetotheirelectrochemicalcompatibility,theyarealsosuitedforuseincontactwithaluminummaterials(butnotforuseindirectcontactwithmagnesiummaterials).另外，鉴于其电化相容性，这些涂覆层尤其适用于与铝材料的连接（但不适用于与镁材料直接连接）。Ofl-r647andOfl-r648areparticularlysuitableforpartssubjectedtoplasticdeformationaftersurfacecoating(e.g.,pipesystems,blindrivetnuts,blindrivetbolts,punchingbolts).Ofl-r647和Ofl-r648特别适用于表面处理后会发生塑性变形的从动元件。（如管道系统、拉钉、拉帽、打孔螺栓）inc/NickelAlloyCoatingsSurfaceProtectionRequirements锌/镍-合金涂覆层表面保护要求TL244-2010TL244第3页共17页2Description标识SeeVW13750,Section2.参见VW13750，第2章节。3Requirements技术要求3.1Surfaceprotectiontypes表面防护类型ThesurfaceprotectiontypeslistedinTable1apply.表面保护类型见表1：Table1SurfaceProtectiontypeCharacteristicsandappearanceOfl-r642Zinc/nickelcoating,passivated(silver-coloredtosoftbluishiridescence),preferredsurfaceprotectiontypeforadhesivecoatings(MKL)andlockingall-aroundcoatings(KLR)acc.toVW60424Ofl-r643Zinc/nickelcoating,passivatedandadditionallysealed(silver-coloredtosoftbluishiridescence)Ofl-r645AsforOfl-r643,butwithadditionallubricanttreatmentacc.toTL52132Ofl-r647Zinc/nickelcoating,passivated(bendablezinc/nickelcoating,silver-coloredtosoftbluishiridescence),e.g.,forpipesystemsOfl-r648AsforOfl-r647,butadditionallywithtwolayersoftopcoatwhichcontainsaluminumpigmentsandwhichisappliedusingthedip/spincoatingmethod(description:Xylan5320/F1138,silver-colored)andadditionallubricanttreatmentacc.toTL52132Ofl-r649a)Zinc/nickelcoating,depositedfromweaklyacidicelectrolytes,silver-colored,passivated,andadditionallysealed(onlyforcastings,e.g.,brakecalipers)Ofl-r672Zinc/nickelcoating,depositedfromalkalineelectrolytes,black,passivated,preferredsurfaceprotectiontypeforblackadhesivecoatings(MKL)andlockingall-aroundcoatings(KLR)Ofl-r673Zinc/nickelcoating,black,passivated,andadditionallyinc/NickelAlloyCoatingsSurfaceProtectionRequirements锌/镍-合金涂覆层表面保护要求TL244-2010TL244第4页共17页sealedOfl-r677AsforOfl-r673,butwithadditionallubricanttreatmentacc.toTL52132a)TheuseofweaklyacidicelectrolytesistobecoordinatedwiththedepartmentsGQL-LM/2and/orI/GQ-32.表1表面保护类型特性和外观Ofl-r642锌/镍—涂覆层，钝化处理（外观为银色至淡蓝彩虹光）涂层表面适用于依VW6042做的涂覆保护类型（MKL）和全周涂覆类型（KLR）Ofl-r643锌/镍—涂覆层，钝化处理，另外作封闭处理（外观为银色至淡蓝彩虹光）Ofl-r645同Ofl-r642,但是须另外按TL52132作润滑剂处理Ofl-r647锌/镍—涂覆层，钝化处理（可弯曲锌/镍—涂覆层，银色至淡蓝彩虹光，如管道系统）Ofl-r648如Ofl-r647，但又利用浸泡或旋转的方法增加了两层含铝材质镀层(类型Xylan5320/F1138银色)，额外按TL52132作润滑剂处理。Ofl-r6491）锌/镍—涂覆层，从弱酸电解质中离析，银色，钝化处理，和封闭处理（仅用于铸件，例如：制动钳）Ofl-r672锌/镍—涂覆层，从碱性电解质中离析，黑色钝化处理，优先适用于黑色涂覆保护类型（MKL）和全周涂覆保护类型（KLR）Ofl-r673锌/镍—涂覆层，黑色钝化处理，且另外作封闭处理Ofl-r677同Ofl-r673，但是须另外按TL52132作润滑剂处理（a）如使用弱酸电解质，必须与