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1、不锈钢的酸洗钝化（Picklingpassivationofstainlesssteel）Picklingpassivationofstainlesssteel.TxtPicklingandpassivationofstainlesssteel-Yong-SinaBLOGPicklingpassivationofstainlesssteel2007-05-0509:12:13Smallandmedium-sizedThenecessityofpicklingpassivationof1.stainlesssteel:Austen
2、iticstainlesssteelhasgoodcorrosionresistance,hightemperatureoxidationresistance,goodlowtemperatureperformanceandexcellentmechanicalproperties,coupledwithRenergy.Therefore,itiswidelyusedinchemical,petroleum,power,nuclearengineering,aerospace,aviation,marine,medicine,l
3、ightindustry,textileandotherdepartments.Itsmainpurposeiscorrosionprotectionandrustprevention.Thecorrosionresistanceofstainlesssteelmainlydependsonthesurfacepassivationfilm.Ifthefilmisincompleteordefective,thestainlesssteelwillstillbecorroded.Inengineering,picklingand
4、passivationareusuallyusedtomakethecorrosionresistancepotentialofstainlesssteelplayagreaterrole.Instainlesssteelequipmentandpartsinforming,assembly,welding,weldinspection(suchasinspectionandpressuretest)andconstructionoflabelingprocesstobringoilstains,rust,dirt,lowmel
5、tingpointmetalnonmetalcontamination,paint,weldingslagandspatter,thesesubstancesaffectthesurfacequalityofstainlesssteelequipmentandparts,thedestructionoftheoxidefilmonthesurfaceofsteel,reducetheresistancetogeneralcorrosionandresistancetolocalcorrosion(includingpitting
6、corrosion,crevicecorrosion),andevenleadtostresscorrosioncracking.Stainlesssteelsurfacecleaning,picklingandpassivation,inadditiontomaximizecorrosionresistance,butalsotopreventproductpollutionandaccesstotheroleofbeauty.stayGBl501998"steelpressurevessel"stipulatesthatth
7、esurfacesofcontainersmadeofstainlesssteelandcompositesteelplateswithcorrosionprotectionrequirementsshallbesubjectedtoacidwashingandpassivation".Thisprovisionisaimedatusingthepressurevesselinthepetrochemicalindustryisconcerned,becausethesedevicesusedindirectcontactwit
8、hthecorrosivemediaoccasions,fromensuringcorrosioncorrosionresistanceofthepicklingandpassivationisnecessary.Forotherindustrialsector
