GMW3359
Non-ElectrolyticallyAppliedZincRichCoating
版本201402
非电解富锌涂层通用标准
1.Scope.
Thisstandardcoversthebasicrequirementsforacorrosionresistantnon-electrolyticallyappliedzincrichcoating.
Besidescorrosionprotection,thecoatingalsoprovidesconsistentfrictionalproperties
1范围。本标准涵盖耐腐蚀非电解富锌涂层的基本要求。除防腐外,涂层还具有一致的摩擦性能
1.1MaterialDescription.材料描述
ThiscoatingspecificationcoverszincflakecoatingwithorWithoutatopcoat.
CoatingTypes:Threelevelsofcorrosionprotectionareprovidedbythefollowingtypes∶
TypeA:Highcorrosionresistantcoating
TypeB:Mediumcorrosionresistantcoating
TypeC:Lowcorrosionresistantcoating.
该涂层规格包括带或不带涂层的锌片涂层。提供三种不同类型的防腐涂层类型:
A型:高耐腐蚀涂层
B型:中耐腐蚀涂层
C型:低耐腐蚀涂层。
Note:Whennotexplicitlyspecified,thedefaultcoatingtypeshallbetypeA.partscontracted
andproductionpartApprovalprocessed(“PPAPED”)beforeJanuary12014,thatiswithoutthe
coatingType(A,B,orC)specified,maycontinuetodefaulttoTypeB.
Note:TypeCcoatingsystemsmaybewithouttopcoatifcoefficientoffriction(Cof)
requirementsaremetTreatmentwithanadditionalLubricanttomeetCoFopermossibIe
注意:如果没有明确指定,默认的涂层类型应该是A型。在2014年1月1日之前,如果没有指定的涂层类型(A,B,
或C),则合同部件和生产部件审批(“PPAPED”)可能继续默认为B型。
注意:C型涂层系统可能没有表面涂层,如果要求满足摩擦系数(Cof)可允许使用额外润滑剂处理
1.2Designation.Notapplicable.名称。不适用
1.3Applicability.thiscoatingissuitableforexternallyandinternallythreadedfastenerssize
M6orlarger,andotherferrouspartswherehighlevelofcorrosionprotectionandfreedomfrom
hydrogenembrittlementarerequired.Thiscoatingisnotrecommendedforthefollowingtypesof
parts
1.3适用性。本涂料适用于外部和内部螺