| 摘要 |
<p>Provided is a flux-cored arc welding wire having high strength and excellent impact toughness at very low temperature. The flux-cored arc welding wire comprises 0.15-0.8 wt% of C, 0.2-1.2 wt% of Si, 15-34 wt% of Mn, 6 wt% or less of Cr, 1.5-4 wt% of Mo, 0.02 wt% or less of S, 0.02 wt% or less of P, 0.01 wt% or less of B, 0.1-0.5 wt% of Ti, 0.001-0.3 wt% of N, 4-15 wt% of TiO2, 0.01-9 wt% of at least one of SiO2, ZrO2 and Al2O3, 0.5-1.7 wt% of at least one of alkali elements such as K, Na and Li, 0.2-1.5 wt% of at least one of F and Ca, and the balance of Fe and other inevitable impurities.</p> |
