| abstract |
The problem of the present invention is excellent flux resistance at high temperature, which is a problem in the first layer welding part of single-sided butt welding of a steel plate made of mild steel or high tensile steel, and excellent flux workability in all posture welding and excellent mechanical properties of the weld metal. To provide a wire. It is a flux-embedded wire which is used for welding steel sheet made of mild steel or high tensile steel, and is filled with flux in a steel outer sheath, and has a flux filling rate of 10 to 25 mass% with respect to the total mass of the wire, and C: 0.02 to 0.10 with respect to the total mass of the wire. Mass%, Si: 0.05-1.50 mass%, Mn: 1.7-4.0 mass%, Ti: 0.05-1.00 mass%, TiO 2 : 1.0-8.0 mass%, Al: 0.20-1.50 mass%, Al 2 O 3 : 0.05 It is characterized by containing from 1.0 mass%, B: 0.003-0.02 mass%, N: 0.005-0.035 mass%, Mg: 0, 01-2.0 mass%. |