| 摘要 |
PURPOSE:To provide an electrode which can prevent the cracking of weld meftal, by specifying a flux rate, the compsn. of a core wire alloy and the flux, the alloy components in the entire part of the electrode, and the relations between the Nb, C in the core wire and the CaCO3 in the flux. CONSTITUTION:An electrode wherein the flux rate of the flux on the outside circumference of a core wire is 20-50wt% (hereinafter the same), the core wire alloy contains <=0.05 C, <=20 Cr, <=0.20 N, <=1.0 Si, <=1.0 Mn, and the balance Fe and unavoidable impurities or further >=1 kind among <=6 Al, <=4 Ti, <=3.0 Nb, the flux contains 15-50 CaCO3, 20-60 CaF2 or further contains >=1 kind among <=40 Cr, <=12, Al, <=3 Ti, <=1.0 N, <=3 Nb, the entire part of the electrode contains <=0.15 C, 9-25 Cr, 0.003-0.16 N, <=1.0 Si, <=1.0 Mn, 0.16-15 Al, 0.12-6.0 Ti 0.5-3.2 Nb and the balance Fe and unavoidable impurities, and further the value of the equation (F is the flux rate) is 13-50. |
