:100225855(2007)0620041204:(1982-),,,,1,1,1,2,2(11,610065;21,610041),,;;:TH134:AThevalvefailureanalysisandclassificationHUANGYan1,ZHOUMi1,HUANGWei2xing1,LIXiao2zhong2,LUOZhi2yuan2(1.CollegeofChemicalEngineering,SichuanUniversity,Chengdu610065,China;2.NuclearPowerInstituteofChina,Chengdu610041,China)Abstract:Theclassificationmethodsofvalvefailurewasdiscussedbasedontheoccurrencecharacteris2ticstheeffectdegreeandthecause.Thecomprehensiveclassificationmethodaccordingtothefailuremodeofmachineryproductsismorefeasible.Thisclassificationmethodwasappliedtooneofthespecifiedvalves,i.e.safetyvalvetofailurephenomenonanalysisandclassification.Keywords:valve;failureclassification;failuremode1,,,,,,,2,,,1,2,,,,,,,,,,3,,,,,,,,1420076©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)311,,,,,312,,,()()(),,,,,,,,,,1313,4,,,,3142420076©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)1,,,,,,,,,,(),,,5,,,,,(2)6,,,,,3420076©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,,,11M1:,199812,1M1:,199313,,1-M1:,200514,1M1:,19881(:2007108103)(21)GB9439,N,N(n+100),250350MPa,,,,1mg/m2a158140131118542HT250Ni2(Wt%)CSiMnPSNiCr21831211311601811201080110118210012014,+014,-112,,NiCr31,Mn015%Cr,,,Cr4HT250Ni2,,,,015mm/a,1GB9439-1988,S.(:2007101125)4420076©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.