压力容器2025，Vol.42Issue(12)：48-53,6.DOI:10.3969/j.issn.1001-4837.2025.12.006
IG541消防气瓶爆炸原因分析
Explosion cause analysis of IG541 fire extinguishing gas cylinder
摘要
Abstract
Aiming at the explosion problem of IG541 fire extinguishing gas cylinder(composed of 52%N₂,40%Ar,and 8%CO₂),the causes of failure were carried out by means of macroscopic inspection,chemical composition analysis,mechanical property analysis,metallographic analysis,fracture morphology analysis,corrosion product analysis and determination of water content in the gas inside the cylinder.The results show that both the material composition and mechanical properties of the gas cylinders comply with the provisions of standard GB/T 18248-2008.However,the water content in the filled fire extinguishing gas reaches 80×10⁻⁴%,which is 16 times the upper limit stipulated by the standard GB 20128-2006.This causes the inner wall of the upper middle part of the gas cylinder in a humid CO2 environment for a long time,leading to stress corrosion cracking(SCC)and eventually resulting in an explosion.Through explosion cause analysis the fire extinguishing gas cylinder,this can provide a reference for the filling and inspection of gas cylinders containing CO2 and other gases with corrosion risks.关键词
消防气瓶/CO2/应力腐蚀开裂(SCC)/爆炸Key words
fire extinguishing gas cylinder/CO2/stress corrosion cracking(SCC)/explosion分类
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姜勇,钱承锦,仲卫星,巩建鸣..IG541消防气瓶爆炸原因分析[J].压力容器,2025,42(12):48-53,6.基金项目
国家重点研发计划项目(2018YFC0808800) （2018YFC0808800）
