FLUX-CORED WIRE FOR ADDITIONAL WELDING, AND WELDING METHOD

摘要

Provided are a flux-cored wire and a welding method which, in additional welding, make it possible to improve the fatigue strength of the weld while keeping the breakage resistance of the weld metal satisfactory. The flux-cored wire for additional welding comprises a steel sheath filled with a flux, and is used in additional welding at a toe of the weld metal used in main welding. The flux-cored wire contains, with respect to the total mass of the wire, 0.2-1.0 mass% Si and 3.0-10.0 mass% Mn, and the contents of C, P, S, and the sum of Cr and Ni have been regulated to 0.1 mass% or less, 0.03 mass% or less, 0.03 mass% or less, and 3.8 mass% or less, respectively.