激光焊对C-22哈氏合金焊缝抗腐蚀性能改进的研究  

Improvement ofanticorrosion property for laser welding Hastelloy C-22

作　　者：彭坤[1] 芦凤桂[1] 唐新华[1] 俞海良[1] 王弘昶[1] 

机构地区：[1]上海交通大学上海市激光制造与材料改性重点实验室,200240

出　　处：《焊接》2009年第5期64-67,共4页Welding & Joining

摘　　要：传统TIG焊技术焊接C-22哈氏合金导电辊,焊缝抗腐蚀性较差,严重影响了其使用寿命。为了提高焊缝抗腐蚀性,采用激光焊技术,焊后对焊缝进行固溶处理,采用电化学和化学腐蚀试验,分别测量了激光焊和TIG焊的腐蚀电位及腐蚀速率。结果表明C-22哈氏合金激光焊焊缝的抗腐蚀性能得到显著提高,这说明采用激光焊焊接哈氏合金有利于焊缝抗腐蚀性能的改进,从而为激光焊焊接哈氏合金导电辊的实际应用提供了技术支撑。Anticorrosion property of the weld seam for Hastelloy C -22 conductor roll welded by TIG technology is poor,which influences its service life.In order to improve the anticorrosion property,laser welding technology was applied.The corrosion potential and corrosion rate of weld seam of Hastenoy C-22 by TIG welding and laser welding were measured by electrochemical test and chemical corrosion test respectively. The results show that the anticorrosion property of Hastelloy C-22 welded joint by laser welding improves significantly.The achievement of the research provides technical support for application of laser welding of Hastelloy C-22 conductor roll.

关 键 词：哈氏合金 抗腐蚀性 激光焊 

分 类 号：TG456.7[金属学及工艺—焊接]