理化检验-物理分册2024，Vol.60Issue(4)：60-64,5.DOI:10.11973/lhjy-wl202404015
天然气集气站外输汇管泄漏原因
Causes of leakage of external manifold of natural gas gathering station
贾雅妮 1姬茹一 1刘天庆 1邵凯斌1
作者信息
- 1. 机械工业上海蓝亚石化设备检测所有限公司,上海 201620
- 折叠
摘要
Abstract
Leakage occurred in the external manifold of a natural gas gathering station.The causes of pipeline leakage were analyzed by means of macroscopic observation,penetration testing,chemical composition analysis,mechanical property test,metallographic examination,scanning electron microscope and energy spectrum analysis.The results showed that the chemical composition,mechanical properties and microstructure of the base metal of the pipeline met the requirements of the standard.The content of Mn and Si elements in the chemical composition of the weld was high,and the tensile properties and hardness were higher than those of the base metal,and the microstructure was lath martensite.The fracture was characterized by intergranular and transgranular mixed cracking morphology.The reason for the leakage of the manifold was the hydrogen embrittlement cracking of the material caused by improper welding process.关键词
管道泄漏/显微组织/氢脆开裂/焊缝/硫化物Key words
pipeline leakage/microstructure/hydrogen embrittlement cracking/welding seam/sulfide分类
矿业与冶金引用本文复制引用
贾雅妮,姬茹一,刘天庆,邵凯斌..天然气集气站外输汇管泄漏原因[J].理化检验-物理分册,2024,60(4):60-64,5.
