湛江发电厂SUS304HTB炉管爆管原因分析

SUS304HTB1,1,2(1.,,524099;2.,,102401)[]1,SUS304HTB,[]:TM621.2:B:1000-7229(2001)04-0026-03AnalysisonCausesofSUS304HTBBoilerTubesExplosioninZhanjangPowerPlantWuMingsheng1,XuChunyi1,JuZhengfu2(1.GuangdongGanjiangPowerPlant,Ganjiang,524099;2.ElectricPowerConsturctionResearchInstitute,StatePowerCorporation,Beijing,102401)[Abstract]Throughmacroandmicrostructureanalysisforwhole-wallsuperheaterexplosiontubesofNo.1boilerinZhan2jiangPowerPlantitisdiscoveredthatSUS304HTBclampingtubesexplosionisduetoseriousqualityprobleminthecourseoftubesbendingfabrication,steampollutedbytheseawaterduringoperation,whichcausedtheaustenicstainlesssteeltothesensi2tizedstateintergranularstresscorrosivecrack.[Keywords]whole-wallsuperheater;tubesexplosion;sensitizedstate;stresscorrosion1300MW3351h,1,DG1025/18.2-II(3)11,4,(1),182,6U(2)51mm6mm,12:SA-213T9l12GrZMoWVTiB,:SUS304HTB1l(MCR)///m2/(kJkg-1)40646211031103695.61904.9:16,2l3,,SUBS304HTB,(SA213T91)6:2000-10-086222420014ElectricPowerConstructionVol.22No.4Apr2001,,3m,,22,2635,136(SA213T91),2.1(1730),,,(3),,,,,,,,2.2:SUS304HTBGB531085JISSUS304HTB;SA213T9lASTMA21385:2GB531085,JISSUS304HTBASTMA213852.3,36,2635,,,,,(4),,,,,(5)T91,,342.4:1426‰35,(6)724SUS304HTB56:X,ClS,ClS;ClS,SP:SUS304HTB-Fe,M23C633.1,3.23::,,Cl,1,1000,Cl,,,,,:,450850,,5008001,710750/50min,1,,,:3:;,,;3.3,,,,,,,,,3.4,304,:3.4.1SUS304HTB,Cl,,,,3.4.2,,3.4.3,,3.4.4SUS304HTB(32)822236Ma/mb/mUm/VRESIS(5)Thapar/%(5)Thapar1204020534502517-6.0-2.224080202913142997.72.83639030259236226-8.9-10.7430310050248226228-8.9-8.154016040200193186-3.5-7.064515050190174176-8.4-7.476020050155146140-5.8-9.186010010014216214514.12.191102001001099498-13.8-10.11072160801431441230.8-13.91114432080918177-11.0-15.43,M2855.1,(5),RESIS,-8.0%5.3%,Thapae-2.3%13.1%5.2LT,(5),RESIS,-13.8%14.1%,Thapae-15.4%15.1%5.3(5),;Thapar,,(5)61..,2000(4)2,..,1997(7)3B.Thapar,etal.SimplidequationsformeshandstepvoltageinACsubsta2tion.IEEETransactionsonpowerDilivery,1991,6(2):601(:)(28)44.14.1.124SUS304HTBSA-213T914.1.2TP347H,X,4.24.2.1,l2,SA-213T91SUS304HTBGr18Ni8,Cl,,,SA-213T914.2.2,Cl,,,,4.2.3,,,4.2.4,,,(:)2322