焊管Issue(2)：56-58,63,4.
天然气输送管道环焊缝泄漏失效分析
Leakage Failure Reason Analysis of Circumferential Weld for Natural Gas Pipeline
胡美娟 1刘迎来 1朱丽霞 1齐丽华 1杨放1
作者信息
- 1. 中国石油集团石油管工程技术研究院，西安 710077
- 折叠
摘要
Abstract
The leakage failure reason of circumferential weld for some X80 natural gas pipeline was analyzed by means of fracture morphology, microstructure observation and mechanical properties tests. The results showed that the tensile performance of welded joint for circumferential weld accord with the requirements of Q/SY GJX 0110-2007 Welding Technology Specification for the Second West-to-East Gas Pipeline Project, and the impact toughness of weld and HAZ both fail to meet the welding requirements of technical specification. The leaking crack of circumferential weld lies in the six position of root welding zone, and repair welding was implemented in the six position of root welding. The main leakage failure reason of circumferential weld was the welding defects close to the toe zone of the repair welding.关键词
X80管线钢/环焊缝/微观组织/根焊/补焊Key words
X80 pipeline steel/circumferential weld/microstructure/root welding/repair welding分类
矿业与冶金引用本文复制引用
胡美娟,刘迎来,朱丽霞,齐丽华,杨放..天然气输送管道环焊缝泄漏失效分析[J].焊管,2014,(2):56-58,63,4.
