梅钢耐酸钢感应焊焊缝耐蚀性研究  

Study on corrosion resistance of induction welding seams of acid-resistant steel in Meigang

作　　者：刘欣 王银军 刘友荣 LIU Xin;WANG Yinjun;LIU Yourong(Research Institute,Baoshan Iron&Steel Co.,Ltd.,Nanjing 210039,Jiangsu,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院,江苏南京210039

出　　处：《宝钢技术》2025年第1期16-19,共4页Baosteel Technology

摘　　要：针对耐酸钢09CrCuSb的高频感应焊焊缝,采用均匀腐蚀全浸试验对其硫酸腐蚀行为进行了研究,利用金相显微镜、扫描电镜等手段揭示其腐蚀行为,并对焊缝的耐沟槽腐蚀性能进行评价。结果表明:耐酸钢09CrCuSb对沟槽腐蚀不敏感,有优异的耐硫酸腐蚀性能;Cu、Cr、Sb等耐腐蚀元素的加入,在耐酸钢表面形成一层致密的不溶于硫酸的富含Cu、Cr、Sb等元素的钝化膜,有利于提高其耐蚀性能,增强耐酸钢的耐硫酸腐蚀性能。A uniform corrosion full immersion test was conducted to study the sulfuric acid corrosion behavior of the high-frequency induction welding seam of the acid-resistant steel 09CrCuSb.The corrosion behavior was revealed using metallographic microscopy,scanning electron microscopy,and other research means.The groove corrosion resistance performance of the weld seam was evaluated.The results show that acid-resistant steel 09CrCuSb is not sensitive to groove corrosion and has excellent resistance to sulfuric acid corrosion.Corrosion-resistant elements such as Cu,Cr,and Sb contribute to the formation of a dense passive film on the surface of acid-resistant steel that is insoluble in sulfuric acid.This passivation film is beneficial for enhancing the sulfuric acid corrosion resistance of acid-resistant steel.

关 键 词：耐酸钢 焊缝 沟槽腐蚀 耐蚀性 

分 类 号：TG174.4[金属学及工艺—金属表面处理]