初轧机工作辊的断裂原因

:(19632),,,;:2003212222,,,(,250101):,,:;;RuptureAnalysisforWorkingRollofBloomingMillZHANGAi2min,LIYong2zhong,ZHANGWei,LIULi[JinanIronandSteel(Group)CoLtd,Jinan250101,China]Abstract:Thefracturemorphology,chemicalcompositionandmicrostructuresofworkinglayerandinsideofworkingrollforbloomingmillwereanalysedbyobservingitsmacrostructure,microstructureandchemicalcomposition,andthecrackcausefortherollwasfoundout.Keywords:workingroll;rupture;cause1,,,,20038,()760mm3200mm3,,29158,803mm,25,12.8t1,760mm,,2,,,,,1,,CCrNi,,SP1%CSiMnPSCrMoMgNi3.360.980.9900.030.011.840.4424.493.051.980.4880.030.010.3900.0711.223(1)(2),1,++;2,GB9441288,3,5,+,4420045©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a)(b)2(a)(b)1012,334,,,,,,15%,,,,,,,,500,5420045©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(43),,,,,,5Q235BH,:[1]..:,1981.[2]..:,1987.6420045©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.