| 摘要 |
A metal-based flux cored wire which can stabilize arc transfer and can reduce the amount of slag generated on surfaces of beads by controlling flux components such as Fe and alloy elements and properly controlling contents of S and Al is provided. In a metal-based flux cored wire comprising a flux filled in a sheath of a steel material, a metal-based flux cored wire having superior weldability is characterized in that: the flux has a composition comprising, by its weight percent, 0.05 to 0.30% of C, 3.0 to 6.0% of Si, 6.0 to 12.0% of Mn, 0.02 to 0.10% of S, 0.3 to 1.5% of Al, and the balance of Fe and inevitable impurities; and a value defined as [ln(Alx100)]/S satisfies a range from 50 to 90.
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