ZG40Ni35Cr25NbM高温合金炉管焊接技术

浏览(2286) 下载(2)

作者单位:: 中国石油天然气第七建设公司,山东胶州 266300
Seventh Construction Company,CNPC,Jiaozhou,Shandong 266300,China

关键词:: 高温合金;炉管;焊接工艺;技术
high temperature resistance alloy;furnace pipe;welding process;technique

摘要:: 吉林石化分公司15万t/a乙烯装置节能改造项目,其裂解炉炉膛温度高,使用条件苛刻,辐射炉管材质为高温合金钢ZG40Ni35Cr25NbM.针对炉管结构复杂、管间距小、焊接难度大、质量要求高的特点,分析了炉管的化学成分、力学性能及焊接性能,制订了合理的焊接顺序和焊接方法,提出了焊接时的注意事项.按照所制订的焊接工艺和方法共焊接各种规格焊口640道,探伤一次合格率为99.5%,证明该焊接工艺和方法是可行的.
In the 15x10⁴t/a ethylene facility energy-saving reconstruction project in Jilin Petrochemical Subcompany,the pyrolysis furnace r-uns at high temperature and rigorous condition.The pipe material of radiant furnace is high temperature alloy ZG40Ni35Cr25NbM.Aimed at the w-elding difficulty arising from complex furnace pipe structure and narrow space between pipes,and analyzing the chemical composition,mechanic-al property and weldability of furnace pipes,the rational welding procedure and method are established.After testing 640 welds,the once qual-ification rate reaches 99.5%,that shows the welding process and method are effective and feasible.

2005,6(6): 52-54 收稿日期：2005-8-3

分类号：TE973.3

作者简介：李晓松(1976-),男,辽宁绥中人,工程师,1998年毕业于南昌航空工业学院,长期从事工程施工焊接技术管理工作.