理化检验-物理分册2017，Vol.53Issue(11)：818-821,4.DOI:10.11973/lhjy-wl201711012
天然气管道用直通球阀的开裂原因分析
Analysis on Cracking Reasons of the Ball Valve Used in Natural Gas Pipelines
夏雯 1刘淑凤 1杜风贞 1左玉婷 1张东晖1
作者信息
- 1. 北京有色金属研究总院 国标(北京)检验认证有限公司,北京 100088
- 折叠
摘要
Abstract
The ferrule nut of a ball valve used in natural gas pipeline cracked during the service period. Macroscopic observation,fracture surface analysis,corrosion product analysis,chemical composition analysis, microstructure analysis and so on were used to analyze the cracking reasons of the ferrule nut,and the thermal simulation experiment and intergranular corrosion test were carried out.The results show that:the main reasons for cracking of the ferrule nut were that chemical compositions were not qualified and the solution treatment was insufficient;the minor reason for cracking of the ferrule nut was that a large number of non-metallic inclusions caused the electrochemical corrosion.关键词
球阀/卡套螺母/固溶处理/晶间腐蚀/开裂Key words
ball valve/ferrule nut/solution treatment/intergranular corrosion/cracking分类
矿业与冶金引用本文复制引用
夏雯,刘淑凤,杜风贞,左玉婷,张东晖..天然气管道用直通球阀的开裂原因分析[J].理化检验-物理分册,2017,53(11):818-821,4.
