普碳钢直缝焊管焊缝金相组织分析

STEELROLLING199842Apr11998No12(,041000)Q235B,,,,,,METALLOGRAPHICSTRUCTUREANALYSISOFWELDOFCARBONSTEELBUTTWELDEDPIPEGengYinggui(DepartmentofScienceandTechnology,LinfenIronandSteelCompany,Shanxi,041000)AbstractIntheflatteningtestofhigh2frequencyweldedpipeofQ235B,themetallographicstructuresofweldandbasemetalofspecimanswhichreachedandunreachedthestandardareanalyzedandcompared1Thegenerationreasonofthemet2allographicstructureintheweldareaanditsrelationshipwithweldingtechnologyareanalyzed1Keywordscarbonsteel,weldedpipe,metallographicstructure,weld,quality:1997-5219:199729228:,36,,[phone],Q235B,,,,,1,5(A1A5,B1B5)111,112A1A5B1B51,,113,;2,,,42a)1b)a);b),(),(),CAQ235B,,,13501500,,1493,GS,723,,,,,,Ac1,,Ac1,Q235B750,,,,,Ac3,Q235B9001100,,,1100,,,,,13,,,,,1ab,,01150120mm,7%10%,01060108mm3%4%,,,,,,,,,1,,522:,,,,1,,,,,,4,,,SMnSiP,,MnOSiO2,,,,,,,,,,,,,,,,,,51,,,,2,,,,,,2,,,,,,,,6(1),,(2),,,,,(3),,,,,(4),,,,,,6219981