15NiCuMoNb5-6-4厚壁钢管焊接工艺研究及应用  

Research and Application on Welding Procedure of 15NiCuMoNb5-6-4 Thick Steel Pipes

作　　者：杨博[1] 黄奕昶[1] 钱耀洲[1] 袁奕雯[1] 

机构地区：[1]上海市特种设备监督检验技术研究院,上海200333

出　　处：《管道技术与设备》2016年第3期38-40,共3页Pipeline Technique and Equipment

摘　　要：某工程需要进行厚壁15NiCuMoNb5-6-4钢管的焊接,由于该管道系统承载压力大,流体温度高,且在管道内壁堆焊不锈钢耐蚀层,因此,焊接成为现场安装质量控制的关键环节。本文通过采用ER55-G氩弧焊打底、E6018-G焊条电弧焊焊接的方法及合理的工艺措施,经焊接工艺评定试验和焊接接头金相组织分析,表明所制定的焊接工艺可以保证焊接接头的力学性能和耐蚀性能。Welding of 15NiCuMoNb5-6-4 thickness pipes is needed in the pressure pipes installation. The pipe system works in the condition of high pressure and temperature,in addition the inner surface of pipes can overlaid the stainless steel that resists corrosion. Thus the welding procedure becomes the key point for the installation quality-control. By using ER55- GGTAW at bottom and E6018- G SMAW method,the proper welding procedure was carried out,and welding procedure qualification test was passed and metallographic microstructures analyses of welding joints were conducted. The results show that this procedure can ensure the mechanical property and corrosion resistant performance of weld joints.

关 键 词：15NiCuMoNb5-6-4厚壁管道 焊接工艺 焊接性能 

分 类 号：TG444[金属学及工艺—焊接]