李涛 1张志明 1王强 1张婷婷 1陈小伟 1王学仕1
作者信息
- 1. 中国石油集团渤海石油装备制造有限公司,天津 300457
- 折叠
摘要
Abstract
To meet the high-performance requirements for hydrogen pipeline materials in large-scale hydrogen transportation,SAWL welded steel pipe for pure-hydrogen transportation,with dimensions of Φ610 mm×14.3 mm,was developed using a low-carbon,low-manganese,and low-phosphorus,low-sulfur,low-oxygen,low-nitrogen,low-hydrogen microalloyed L360MH steel plate,jointly developed with a domestic steel manufacturer.Comprehensive evaluations were conducted on mechanical properties,microstructure,hardness,resistance to hydrogen-induced cracking(HIC),sulfide stress corrosion cracking(SSCC),and hydrogen environmental compatibility test,with comparative analyses performed against conventional L360M steel pipes.The results show that the chemical composition,microstructure,and mechanical properties of the developted steel pipes comply with the standard of GB/T 9711-2023.No cracks were observed during HIC and SSCC testing,demonstrating excellent resistance to hydrogen sulfide corrosion.In the hydrogen environments,the performance degradation rate of both base metal and the welds remained within 10%,and no significant susceptibility to hydrogen embrittlement was detected.The developed L360MH steel pipe exhibits superior mechanical performance and hydrogen compatibility while offering technical support for long-distance hydrogen pipeline infrastructure.关键词
氢气输送/直缝埋弧焊管/L360MH管线钢/氢环境相容性/氢脆/疲劳寿命Key words
hydrogen transportation/SAWL pipe/L360MH pipeline steel/hydrogen environmental compatibility/hydrogen embrittlement/fatigue life分类
矿业与冶金
