FluorocarbonCoatingforElectrodepositionMaskingGM6076M
碳氟化合物电极沉积涂层
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1Scope
Thisspecificationcoversthebasicrequirementsforafluoropolymercoatingtobeusedon
fastenerstopreventbuildupofelectrodepositedprimers.
该标准包含了紧固件用于防止表面沉积物生成的氟聚合物涂层基本要求.
1.1MaterialDescription.Thecoatingsystemisfreeofhexavalentchromate,withnohexavalent
chromateinfinalproductperGMW3059requirements.GMW3034willbeusedasareferee
Test.
1.1材料.该涂层体系不含六价铬,按GMW3059要求,最终产品中不含六价铬,并以GMW3034作为仲
裁实验标准.
1.2TypicalApplication.Thecoatingissuitableforinternalthreadsofnutsandtappingplates
andexternalthreadsofboltsandstuds.
1.2特殊应用本涂层适合于内螺纹螺母和金属板及外螺纹螺栓和螺柱.
1.3BasicConsiderations.Useofthisfinishonthreadedsurfaceand/orbearingsurfaceofjoints
couldaffectthetorque-tensionrelationship.Itisrecommendedthatatorque-tensionstudyofthe
fastenerjointbeperformedbeforereleasingthisfinishonanewapplication.
1.3基本考虑.螺纹表面和连接处支撑面使用该重涂层会影响扭拉关系.建议在新品试制应用该涂层前
应研究学习紧固件扭-拉关系.
2References参考
Note:Onlythelatestapprovedstandardsareapplicableunlessotherwisespecified.
注释.若无其它规定,只使用最新批准的标准.
2.1ExternalStandards/Specifications.外部标准
None无
2.2GMStandards/Specifications.GM标准
GM9084PGMW3034
GMW3001GMW3059
3Requirements要求
3.1AppearanceandCure.Coatingshallhaveauniformappearanceandbefreeoftears,runs,
andflakedareas.Itshallhaveanidentifiablecolor.Redcolorisnotpermissible.
3.1外观和对策.涂层表面均匀一致,无裂纹,脱落等,颜色要易识别,但不允许用红色.
3.1.1Thecureparametersforthespecificcoatingshallbedeterminedusingtheappropriate
time/temperaturerelationshipasrecommendedbythechemicalmanufacturertoachievethe
performanceaslistedbelow.Innocaseshallthecurecycleaffectthemechanicalordimensional
propertiesofthepartsbeingcoated.
3.1.1特定涂层的固化参数(由相应时间/温度