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1、不锈钢酸洗钝化的方法与工艺（Methodandprocessforpicklingpassivationofstainlesssteel）Thisarticleiscontributedbyyysshh0DOCdocumentsmayexperiencepoorbrowsingontheWAPside.ItisrecommendedthatyoufirstselectTXT,ordownloadthesourcefiletothelocalview.Stainlesssteelpicklingpassivationmethodand
2、process1picklingpassivationtreatmentmethodsstainlesssteelequipmentandpartspicklingpassivationtreatmentaccordingtodifferentmethodsofoperationanditsscopeofapplicationandcharacteristicsareshownintable1.Table1ComparisonofpicklingpassivationmethodsforstainlesssteelMethodofi
3、mpregnationbrushpastemethodsystemcirculationcirculationsystemofelectrochemicalmethodcanbeusedforparts,andcanbeusedtobrushfieldequipmentsurfacetreatmenttechnologyiscomplex,forDCpowersupplyorpotentiostatscopebutnotsuitableforlargeequipmentforlargeequipmentinsideandoutsid
4、esurfaceandlocaltreatmentfortheinstallationormaintenanceofthescene,especiallyforweldingdepartmentofmanualoperationandpoorworkingconditions,highproductioncostsprayingmethodforlargeequipment,suchasheatexchanger,shellandtubeprocessinghastheadvantagesofconvenientconstructi
5、on,acidsolutioncanbereused,butthepipingandthepumpisconnectedwiththeadvantagesanddisadvantagesoflow;alargevolumeofequipmentwithacidimpregnationliquidconsumptionoftoomuchmanualoperation,poorworkingconditions,acidtheliquidcannotberecycledforon-siteinstallation,largecontai
6、nerwithliquidquantityislow,lowcost,fastspeed,buttheneedtoconfigureaspraygunandaringcanbeusedincuttingPicklingbathorpassivationtankparts,acidwashingliquidcanbeusedforalongtime,theproductionefficiencyishigher,cost2acidpassivationformulaexamplesof2.1generaltreatment(1)aci
7、dreagentHNO36%~25%+HF0.5%~8%(volumefraction);temperature21to60DEGC;thetimeaccordingtotheneed;oragentammoniumcitrate5%~10%(massfraction);temperature49to71DEGC;10min~60min.(2)20%~50%passivationreagentHNO3(volumefraction);temperature49to71DEGC;10min~30min;orthetemperature
8、of2lto38DEGC;30min~60min;orHNO3agent20%~50%+Na2Cr207H2O22%~6%(massfraction);temperature49to54DEGC;15~Min30min;orthete
