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第30卷第6期专辑2008年12月舰船科学技术SHIPSCIENCEANDTECHNOLOGYVo.l30,No.6Dec.,2008不锈钢设备的酸洗钝化技术王新喜,邢福祥,杨庆平(中国船舶重工集团公司第七一八研究所,河北邯郸056027):,;,,,:不锈钢;酸洗钝化;腐蚀;质量检验:TS91411+2;TG17:A:1672-7649(2008)06Z-0192-04DOI:1013404/j1issn11672-7649120081061043ThepicklingandpassivatingtechniqueofstainlesssteelequipmentWANGXin-x,iXINGFu-xiang,YANGQing-ping(The718ResearchInstituteofCSIC,Handan056027,China)Abstract:Stainresistanceisthemostimportantspecialperformanceofthestainlessstee,landitwillbehighlyimprovedafterthatbepickledandpassivated.Intheory,thisarticledescribesthenecessityandtheoryofpicklingandpassivating,andtheprocessandmethoditused;then,accordingtotheactualsituationofthemanufacturingprocessofthestainlessstee,lthearticlegivesadetailedstatementofthecharacteristicandtheproblemofpicklingandpassivatinganddescribesitsqualitycontrolgeneralrequirements.Keywords:stainlessstee;lpicklingandpassivating;corrosion;qualityinspection:2008-08-29:(1973-),,,,1不锈钢酸洗钝化的必要性,,,,,,,(),,,(),,,2不锈钢酸洗钝化原理,(1nm),,,,,,第6期专辑王新喜,等:不锈钢设备的酸洗钝化技术,,,,Cl-,Br-,F-,,,,,,,,10Lm,,,,,,,,,,,,CrO3Cr2O3,,3不锈钢酸洗钝化的方法与工艺311,1,,,,,131231211一般处理ASTMA380)1999,3001)1Fig11Generalprocessflowofpicklingandpassivating:6%~25%HNO3+015%~8%HF();21e~60e;;:5%~10%();49e~71e;10~60min2):20%~50%HNO3();49e~71e,10~30min;,2le~38e,30~60min;:20%~50%HNO3+2%~6%Na2Cr2O7#H2O2();49e~54e;15~30min;21e~38e;30~60min3):8%~11%H2SO4();66e~82e,5~45min;:6%~25%HNO3+015%~8%HF();21e~60e;15%~25%HNO3+1%~8%HF()31212膏剂法处理1)[1]#193#舰船科学技术第30卷:25%HNO3+4%HF+7%l()BaSO4,:30%HNO325%HNO3+1%()K2Cr2O7BaSO45~30min,pH=7,2)[2]:8%~14%HNO3();10%~15%HF();212%~217%();60%~70%(,);213%~218%();()4不锈钢设备制造过程中的酸洗钝化处理411[3],,,,,412[4],,(),20mm,,,,,,,,,HNO3HF,413[3],,:(10min)y(215min)y(2min)y(2min)y(10min)y(2min)y(1min)y(1min)y(115min)y(1min)y(1min)y5不锈钢酸洗钝化的注意事项511,,,,,512Cl-,,,,,C1-25mg/L,,,C1-,,513,,,,HNO3+HF,,HFHNO3,HNO3+HF,HNO3+HF,,5B149e,,HF,HNO320%~50%,,HNO320%,[5],HNO350%,,,,()HF,,,,2%,,,514,10%(#194#第6期专辑王新喜,等:不锈钢设备的酸洗钝化技术)NaOH+4%()KMnO471e~82e5~60min,,,,,,,,,6不锈钢酸洗钝化的质量检验611,,,612,pH613,:,,:Fe2++K[Fe(CN6)]=KFe[Fe(CN6)]|()+2K:1gK[Fe(CN6)]3mL(65%~85%)HNO3100mL(),,30s,,:[1].[M].:,1996.[2],.-[P].:86101522,1989-07-26.[3].[M].,.:,1987.[4].[M].:,1980.[5].317L,[M].:,1999.#195#
本文标题:不锈钢设备的酸洗钝化技术
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