高压锅炉用水冷壁管失效开裂分析

X((),117000):X,,,,:;;;:TG172:B:1009-5438(2007)03-0011-03AnalysisonCrevicedFailureofthePipeintheWaterCooledWalloftheHighPressureBoilerGAOFeng(TechnologyCenterofBenxiIron&Steel(Group)Co.Ltd.,Benxi117000,Liaoning,China)Abstract:Thecrevicedfailureofthepipeinthewatercooledwallofthehighpressureboilerisstudiedbysomemethodssuchasscanningelectronmicroscope,opticalmicroscope,spectrometer,X-rayanalysis,etc.Theresultsshowthatthecrevicedfailureofthepipeiscausedbythestresscorrosionandthehydrogenembrittlement.Keywords:pipeinwatercooledwall;crevicefailure;stresscorrosionfracture;hydrogenembrittlement,,,,,,,[1],,,,,120G,GB5310[2]20G,1500,1213MPa,,,320340,,PNaFeCuCaMgSi,,pH1012,22.1,,,,;33320076Science&TechnologyofBaotouSteel(Group)CorporationVol.33,No.3June,2007X:2007-03-23:(1966-),,©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[2]3%,,,9101010,34,,900930,,4[2],,,GB5310[2],3,,,350045002.4X-X-,,FeO,AlSiPCaMgCu2133©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:3Fe+4H2OFe3O4+4H23,,,GB5310[2],,,,,,,,[3]pH89,,pH1012,,,,(),[3],PNaFeCuCaMgSi,,,,,,,,,,,,,,,[H],[H],,H2,,[4]4,,,,,[1]1(1)[M]1:,19921[2]GB531085,[S]1[3].[M]1:,19851[4].[M]1:,19851,,,,2070,,,2020,4000kW,,313©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.