Ni-BASED ALLOY FLUX-CORED WIRE

• Main Authors: KAWADA JUNICHI, KITAGAWA YOSHIHIKO
• Format: Patent
• Language: English; Japanese
• Published: 13.09.2021
• Subjects: ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

To provide an Ni-based alloy flux-cored wire excellent in welding workability in a vertical position, hot crack resistance and capable of reducing burn-in of a slag and occurrence of a pit on the surface of bead.SOLUTION: An Ni-based alloy flux-cored wire comprises filling an envelope consisting of Ni-based alloy with a flux and includes respective prescribed amounts per total wire mass of Mn, Ni, Cr, Mo, W and Fe. The flux includes in mass% per total wire mass, 5.40-10.00% of TiO2, 0.40-3.00% of SiO2 conversion value of metallic Si and Si oxide, 2.70% or less of ZrO2 conversion value of metallic Zr and Zr oxide, 0.05-1.20% of Al2O3, less than 0.80% of MnO2, and 0.01% or less of Bi2O3, and ([TiO2]+[ZrO2])/([SiO2]+[Al2O3]) is 25.00 or less.SELECTED DRAWING: None 【課題】立向姿勢での溶接作業性、耐高温割れ性が優れ、スラグの焼付き及びビード表面のピットの発生を低減できるＮｉ基合金フラックス入りワイヤを得る。【解決手段】Ｎｉ基合金からなる外皮にフラックスを充填してなるＮｉ基合金フラックス入りワイヤは、ワイヤ全質量あたり、Ｍｎ、Ｎｉ、Ｃｒ、Ｍｏ、Ｗ、及びＦｅをそれぞれ所定量で含有し、フラックスは、ワイヤ全質量あたり、ＴｉＯ２：５．４０質量％以上１０．００質量％以下、金属Ｓｉ及びＳｉ酸化物のＳｉＯ２換算値：０．４０質量％以上３．００質量％以下、金属Ｚｒ及びＺｒ酸化物のＺｒＯ２換算値：２．７０質量％以下、Ａｌ２Ｏ３：０．０５質量％以上１．２０質量％以下、を含有し、ＭｎＯ２：０．８０質量％未満、Ｂｉ２Ｏ３：０．０１質量％以下、であり、（［ＴｉＯ２］＋［ＺｒＯ２］）／（［ＳｉＯ２］＋［Ａｌ２Ｏ３］）：２５．００以下である。【選択図】なし