| 简介 |
A flux-cored wire for stainless steel arc welding including an outer sheath made of stainless steel and flux filled up in the outer sheath contains, as percentage to the total mass of the wire, Cr : 22.0-30.0 mass %, Ni : 6.0-12.0 mass %, Mo : 2.0-5.0 mass %, N : 0.20-0.35 mass %, TiO2 : 4.0-9.0 mass %, SiO2 : 0.1-2.0 mass %, ZrO2 : 0.5-4.0 mass %, total of Li2O, Na2O and K2O : 0.50-1.50 mass %, metal fluoride in terms of fluorine amount : 0.10-0.90 mass %, and rare earth element component : 0.10-1.00 mass %, limits C to 0.04 mass % or below, W to 4.0 mass % or below, Cu to 2.0 mass % or below, Bi2O3 to 0.01 mass % or below, and limits oxides other than the above to 3.0 mass % or below. With such a composition, it is possible to obtain a weld bead which is excellent in the weldability in welding in all attitudes and is more excellent in the low temperature toughness while keeping excellent pitting corrosion resistance in arc welding of duplex stainless steel and the like. |
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