(,243000):,:;;:TG111.91:B:100124012(2001)0720305204FRACTUREANALYSISOFTHEROLLpSNECKCHENLian2man(MapanshanIronandSteelCo.Ltd,Maanshan243000,China)Abstract:Failedrollpsneckwasanalyzedthroughchemicalanalysis,mechanicaltesting,macroandmicro2scopicfractographaswellasmicrostructureexamination.Theresultsshowedthatlargerareabarandnetworkcementiteandlowercarboncontentwerethemajorreasonforshockfractureofrollpsneck.Keywords:Rollpsneck;Fracture;Cementite1,,,,,ITLA7033,004,700mm2300mm,8.84t,22.1370mm,600mm,,,,,,1,,270mm,3:200021021812503377200172PTCA(PARTA:PHYSICALTESTING)Vol.37No.7Jul.20011w(%)CSiMnPSNiCrMo1.932.130.590.0840.011.170.370.143.022.050.590.110.011.340.460.15GB/T1504-19912.903.800.802.500.401.200.250.031.003.000.301.200.200.807mm,,22.2270mm,,,(3),30mm10mm3,,32.31,1.93%,2.450%,,,65mm,44132.52.5.1,,75HS,43HS,5,20mm55(HS)2.5.21,b245,220255N/mm2,GB/T1504-1991b294N/mm2;,52.613,,SEM235C,,67,63002.7,603:7100GB/T9441-1988,34,45,+++,893()10,84%10094%100310100(FeC3)25%35%2%4%,5%,,,,,,,,,,,,,,,,,,,,,1.93%,,3102%1.09%2.4%22[1],1.93%1360,3.02%1240,1%,100,,(1350),2,,,,;,[2],,703:,,,,[3],,4,,;;:[1],.[M].:,1978.22.[2],.[M].:,1981.4.[3].[M].:,1974.12.,:(1),13nm,10-18g(2),HHe,(3),,15nm(4),,13.2He92U,,,,2nm;410nm2%,10-2%10-3%;510m,AES,,14.,0.20.3nm,,0.144nm,,15.,,,,(3nm),()16.,,,,17.,Ac1Ac3,,,(M+A),(M+A),,()803:
本文标题:轧辊辊颈断裂分析
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