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《GM 6174M-2001 Corrosion Protective Coatings Phosphate Organic Oil Type》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、ENGINEERINGMaterialSpecificationGM6174MSTANDARDSMetalsCorrosionProtectiveCoatingsPhosphate/Organic/OilType2References1ScopeNote:OnlythelatestapprovedstandardsareThisspecificationcoversbasicrequirementsforaapplicableunlessotherwisespecified.blackcorrosionprotectivecoatingwhichi
2、s2.1Normative.producedinaprocessconsistingofzincphosphatetreatment,chromicacidrinseorseal,ANSI/ASMEB18.18.2MSAE/USCAR-1organiccoating,ovenbake,waterandoilemulsionSAE/USCAR-5posttreatmentandairdry.2.2GM.1.1GM4465PGM9071PGMW3059Thiscoatingisespeciallysuitableforbolts,clipsandoth
3、ersmallferrouspartswhereabovenormal3Requirementslevelsofcorrosionprotection,freedomfromhydrogenembrittlementanddecorativeblackcolor3.1Appearance.aredesired.Coatingshallhaveauniform,denseblack1.2appearanceandshallbefreefromtears,sagsorothersurfacemottling.Partsthatarenotsuitabl
4、eforbarrelprocessingmayberackedbutmustbeprocessedthroughthe3.1.1sameblackorganiccoatingemployedinthebarrelprocess.Barrelprocessedpartsshallexhibitnoscratchesornicksandshallnotbestucktogetherbutinstead1.3Applications.shallbefreeflowing.Theorganiccoatingisappliedbybarrelprocessi
5、ng3.1.1.1orrackingoverproperlyzincphosphatedsmallparts.PartsfromeitherprocessareovencuredatRackprocessedpartsshallexhibituniformorganic200°Cforaminimumof18minutes.Immediatelycoatingincludingrecessedareas.followingthecure,thepartsareimmersedina3.2Thickness.corporationapprovedpr
6、otectiveoilcompoundinconcentrations,temperaturesandimmersiontimesCoatinginthreadsandrecessedareas,suchasspecifiedbytheapprovedchemicalmanufacturer.nuts,screwheadsorelongatedtubing,shallhaveTheprocessiscompletedwhenpackagedornoadverseeffectonnormalinstallation.placedinsuitablec
7、onfinedcontainers.3.2.11.4Typicalcoatingthicknessshallbe10to25μmforUseofthisfinishthreadedsurfaceand/orbearingthreadedproductsor10to35μmmaximumforsurfaceofjointscouldaffectthetorque-tensionunthreadedproducts.relationship.Itisrecommendedthatatorque-tensionstudyofthefastenerjoin
8、tshouldbeNote:Themaximumthicknessofcoatingwhichperformedbefor
