GM 6174M-2001 Corrosion Protective Coatings Phosphate Organic Oil Type

《GM 6174M-2001 Corrosion Protective Coatings Phosphate Organic Oil Type》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

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