SOLID WIRE FOR LASER ARC COMPOUND WELDING, AND LASER ARC COMPOUND WELDING METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a solid wire for laser arc compound welding, and a laser arc compound welding method with which a sound weld whose bead shape is excellent can be formed even when the fillet welding is performed on a galvanized steel plate at high speed, by suppressing production of spatter, pits and blowholes. PSOLUTION: A welding wire 5 has a composition composed of, by mass, 0.01-0.13% carbon (C), 0.1-1.2% silicon (Si), 0.5-2.5% manganese (Mn), and 0.3% one or two or more kinds selected from a group consisting of aluminum (Al), titanium (Ti) and zirconium (Zr) in total, and the balance Fe with inevitable impurities. The ratio (Si/Mn) is set to be larger than 0.2 and below 1.5, and satisfies the inequalities 4.5 Si + 2.3Mn + 5(Ti + Al + Zr) 7.0. PCOPYRIGHT: (C)2006,JPO&NCIPI