ZG20CrMoV钢三通裂纹原因分析和焊接修复技术

3120036ZG20CrMoVCrackleCauseAnalysisofZG20CrMoVandSteelTriple-valveBodyRiftsandtheMannerofRenovationWeldingoftheRifts(,310015):,,:;;:TK223.1:B:1007-1881(2003)06-0031-041,,,,,,,,,,110CrMo910,,70m,,ZG20CrMoV32540mm,38.842.2mm19422mm,22.223.8mm,13314mm,,8h32540mm19422mmR,,1222,1015,,,©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3220036232ZG20CrMoVs/MPab/MPa5%/cm-2%KHBZBJ98015-89314471490677142135552011114020180mm,,40mm,2mm,2,,,300mm,12mm3,,,,,,,,2ZG20CrMoV2.1ZG20CrMoVZG20CrMoV,,CrMoV,V,VC,CrMo,,ZG20CrMoV,530540,,:,,,,ZG20CrMoV122.2ZG20CrMoV,,,,1ZG20CrMoVCSiMnCrMoVSPZBJ98015-890.180.250.170.370.400.700.901.200.500.700.200.300.030.03©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3320036Ceg:Ceg=C+Mn6+Cr+Mo+V5+Ni+Cu15,ZG20CrMoV,Ceg=0.69,,,,,,,,,2.3,,,,,,2.4mmTIG-R31,3172.4,,,DL5007-92,3003502.5(1),,,,(2)5mm(3),(4)300350,24h(5),,(6),45mm,1/3,(7),(8),,33.1,,,,,,,44©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3420036[1][2][3]DL5007-92.()[S].1992..[M].:,1988.[M].:,2001.5,,,,:ZG20CrMoV,,,,,,,,,3.2,,,,,,,,,,,,,,,,,,,,,3.3,,,,,,,,4,350mm,45mm,40mm,16,,5,ZG20CrMoV,,::2003-09-16:(1951-),,,,©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.