FLUX-CORED WIRE FOR GAS SHIELD ARC WELDING, AND GAS SHIELD ARC WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide flux-cored wire for gas shield arc welding and a gas shield arc welding method capable of obtaining a good bead shape in horizontal fillet welding of long leg length without increasing a welding slag amount.SOLUTION: When [Pa s] represents viscosity of slag and Ts [°C] represents solidification temperature among slag characteristics after welding, flux-cored wire for gas shield arc welding satisfies the following formulae (1) to (4): (1) Ts6667+1277; (2) Ts-5000+1545; (3) Ts6667+1230; and (4) Ts-5000+1580.