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WELDED JOINT AND WELDING MATERIAL 发明申请

2023-08-12 3230 112K 0

专利信息

申请日期 2025-08-29 申请号 JP2004259439
公开(公告)号 JP2006075841A 公开(公告)日 2006-03-23
公开国别 JP 申请人省市代码 全国
申请人 SUMITOMO METAL IND
简介 PROBLEM TO BE SOLVED : To provide a welded joint and a welding material having excellent corrosion resistance in an environment where metal dusting is easy to be generated such as a heat exchange type hydrocarbon reforming device and a waste heat recovering device, and further having excellent high temperature strength and weldability. SOLUTION : In the welded joint having excellent metal dusting resistance, a base material and a weld zone both have a composition comprising, by mass, 0.01 to 0.45% C, 0.01 to 2% Si, 0.01 to 2% Mn, ≤0.03% P, ≤0.01% S, 15 to 35% Cr, 40 to 78% Ni, >2 to <4.5% Al, 3.5 to 15% Mo, 0.001 to 0.2% N and 0.015 to 5.5% Cu, and, also satisfying the following inequality (1), and the balance Fe with impurities. The base material and the weld metal may comprise one or more kinds selected from Co, Ti, Ta, V, Zr, Nb and Hf, and one or more kinds selected from B, Ca and Mg, and rare earth metals as well. The atomic symbols in the inequality (1) or (2) denote the content (mass%) of each element, and, in the case B is comprised, the inequality (2) is satisfied : 24P+1.28Mo+0.9Si-32S-0.12Cu-0.05Al≥4.23 (1), and 24P+1.28Mo+0.9Si+20B-32S-0.12Cu-0.05Al≥4.23 (2). COPYRIGHT : (C)2006, JPO&NCIPI


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