FLUX CORED WIRE FOR WELDING

摘要

PURPOSE:To improve an impact toughness of an weld metal obtd. by using a steel sheath contg. a prescribed ratio each of B and C and incorporating the B source which is heretofore added into the flux to be packed into the sheath of a wire into the steel sheath as well. CONSTITUTION:This flux cored wire for welding is formed by packing the flux around the steel sheath of the wire contg. 0.001-0.01wt% B and <=0.04wt% C. A suitable amt. of B is incorporated into the weld metal by such wire, by which the common use effect of Ti-B is provided and the weld metal having the excellent impact toughness is obtd.