FLUX CORED WIRE FOR STAINLESS STEEL HAVING EXCELLENT PORE RESISTANCE

摘要

PURPOSE: To provide a flux cored wire for stainless steels having excellent pore resistance. ;CONSTITUTION: An austenitic stainless steel is used for the sheath and at least either of fluorine or carbon dioxide generating raw material is incorporated into the wire. In addition, the index expressed in formula (1) is ≤13. 0.084×H(w)-17.86×F(w)-3.47×CO(w)+2.99...(1), where H(w): the quantity (ppm) of the hydrogen incorporated into the wire, F(w): the weight of the fluorine (wt.%) generated at the time of wire combustion, CO(w): the weight (wt.%) of the CO₂ generated at the time of wire combustion, where H(w): ≤160(ppm), F(w): ≤0.20(wt.%), CO(w): ≤0.50(wt.%), F(w)+C0(w)≤0.60(wt.%). The index expressed by formula (II) is so controlled as to be 60 to 30 as a means for satisfying H(w): ≤160(ppm); 0.7×TS(w)/A₂...(11) where Ts(w): the breaking load(kg) of the wire, A: the diameter (ϕmm) of the wire, where TS(w): 180 to 50(kg), A: 1.6 to 0.8(ϕmm).;COPYRIGHT: (C)1994,JPO&Japio