摘要
分析了Gorgon液化天然气项目应用的UNS N06625镍铬合金管道的焊接性,并对该管道进行了焊接工艺评定试验,提出了控制焊接质量的措施。研究分析表明,UNS N06625镍铬合金焊接应采用较小的热输入,焊接工艺选用手工钨极氩弧焊和INCONEL Filler Metal 625焊丝,可以避免在焊接过程中出现热裂纹,使焊缝获得与母材良好匹配的性能。通过焊后无损检测和理化性能检测,UNS N06625镍铬合金焊缝性能符合标准要求。
In this article,it analyzed the weldability of UNS N06625 nickel-chromium alloy pipeline used in Gorgon LNG project, carried out welding procedure qualification test, and put forward welding quality control measures. The results indicated that it should adopt smaller welding heat input in UNS N06625 nickel-chromium alloy welding, select manual argontungsten-arc welding and INCONEL Filler Metal 625 welding wire, so as to avoid hot cracking during welding, and make the weld obtain good performance matching with base metal. Through nondestructive testing after welding and the physical and chemical properties tests, UNS N06625 nickel-chromium alloy weld performance accorded with standard requirements.
出处
《焊管》
2016年第4期35-38,共4页
Welded Pipe and Tube
关键词
N06625
镍铬合金
焊接工艺评定
钨极氩弧焊
N06625
nickel-chromiunl alloy
welding procedure qualification
argon tungsten-arc welding
