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1、不锈钢酸洗钝化的方法与工艺（Methodandprocessforpicklingpassivationofstainlesssteel）Thisarticleiscontributedbyyysshh0DOCdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.Stainlesssteelpicklingpassivationmethodandprocess1picklingpassivation
2、treatmentmethodsstainlesssteelequipmentandpartspicklingpassivationtreatmentaccordingtodifferentmethodsofoperationanditsscopeofapplicationandcharacteristicsareshownintable1.Table1ComparisonofpicklingpassivationmethodsforstainlesssteelMethodofimpregnationbrushpastemethodsystemcirculationcirculatio
3、nsystemofelectrochemicalmethodcanbeusedforparts,andcanbeusedtobrushfieldequipmentsurfacetreatmenttechnologyiscomplex,forDCpowersupplyorpotentiostatscopebutnotsuitableforlargeequipmentforlargeequipmentinsideandoutsidesurfaceandlocaltreatmentfortheinstallationormaintenanceofthescene,especiallyforw
4、eldingdepartmentofmanualoperationandpoorworkingconditions,highproductioncostsprayingmethodforlargeequipment,suchasheatexchanger,shellandtubeprocessinghastheadvantagesofconvenientconstruction,acidsolutioncanbereused,butthepipingandthepumpisconnectedwiththeadvantagesanddisadvantagesoflow;alargevol
5、umeofequipmentwithacidimpregnationliquidconsumptionoftoomuchmanualoperation,poorworkingconditions,acidtheliquidcannotberecycledforon-siteinstallation,largecontainerwithliquidquantityislow,lowcost,fastspeed,buttheneedtoconfigureaspraygunandaringcanbeusedincuttingPicklingbathorpassivationtankparts
6、,acidwashingliquidcanbeusedforalongtime,theproductionefficiencyishigher,cost2acidpassivationformulaexamplesof2.1generaltreatment(1)acidreagentHNO36%~25%+HF0.5%~8%(volumefraction);temperature21to60DEGC;thetimeaccordingtotheneed;oragentammoniumcitrate5%~10%(massfraction);temperature49to71DEGC;10mi
7、n~60min.(2)20%~50%passivationreagentHNO3(volumefraction);temperature49to71DEGC;10min~30min;orthetemperatureof2lto38DEGC;30min~60min;orHNO3agent20%~50%+Na2Cr207H2O22%~6%(massfraction);temperature49to54DEGC;15~Min30min;orthete
