首页> 外国专利> WELDED JOINT OF DUPLEX STAINLESS STEEL, WELDING METHOD OF DUPLEX STAINLESS STEEL AND MANUFACTURING METHOD OF WELDED JOINT OF DUPLEX STAINLESS STEEL

WELDED JOINT OF DUPLEX STAINLESS STEEL, WELDING METHOD OF DUPLEX STAINLESS STEEL AND MANUFACTURING METHOD OF WELDED JOINT OF DUPLEX STAINLESS STEEL

机译：双相不锈钢的焊接接头，双相不锈钢的焊接方法和双相不锈钢的焊接接头的制造方法

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摘要

PROBLEM TO BE SOLVED: To provide a welded joint having excellent corrosion resistance under corrosion environment by improving corrosion resistance of a duplex stainless steel weld metal.;SOLUTION: A welding method of a duplex stainless steel is provided in which the duplex stainless steel containing, by mass%, Cr:18% or more, Ni:0.1% or more, N:0.1% or more, and having a duplex structure of ferrite and austenite, the ferrite amount being 30 to 70 vol.%, is welded by non-consumable electrode type welding with a heat input Q (J/mm) and using a gaseous mixture of an Ar gas and a nitrogen gas as a shielding gas, the nitrogen gas amount being represented by the following formula. When Q≤1000 J/mm, nitrogen gas amount (vol.%)≥3.6×10^-6Q²-6.4×10^-3Q+3. When Q≥1000 J/mm, nitrogen gas amount (mass%)≥3.3×10^-8Q²+3×10^-4Q-0.133.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2018,JPO&INPIT

机译：解决的问题：通过改善双相不锈钢焊接金属的耐蚀性来提供在腐蚀环境下具有优异的耐腐蚀性的焊接接头。解决方案：提供一种双相不锈钢的焊接方法，其中包含以下成分的双相不锈钢：以质量％，Cr：18％以上，Ni：0.1％以上，N：0.1％以上，铁素体量为30〜70vol。％的铁素体和奥氏体的双相组织进行焊接。 -消耗热量为Q（J / mm）并且使用Ar气和氮气的气态混合物作为保护气体的电极型焊接，氮气量由下式表示。 Q≤1000J / mm时，氮气量（vol。％）≥3.6×10 ^{-6 Q ^{2 -6.4×10 ^{-3 Q + 3。当Q≥1000J / mm时，氮气量（质量％）≥3.3×10 ^{-8 Q ^{2 + 3×10 ^{-4 Q-0.133 .;选定的图纸：图4;版权：（C）2018，JPO＆INPIT}}}}}}

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公开/公告号JP2017179427A

专利类型
公开/公告日2017-10-05

原文格式PDF
申请/专利权人 NIPPON STEEL & SUMIKIN STAINLESS STEEL CORP;
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申请/专利号JP20160066213
发明设计人 INOUE HIROSHIGE;IWASAKI YUJI;
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申请日2016-03-29
分类号C22C38;B23K9/23;C22C38/40;B23K26/32;C22C38/60;B23K35/30;
国家 JP
入库时间 2022-08-21 13:59:36

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