冷高压分离器在H<sub>2</sub>S环境下应力腐蚀开裂敏感性评估

<P>LI Ming; LI Xiaogang; CHEN Gang; HU Yang; XUE Guangting</P>

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冷高压分离器在H₂S环境下应力腐蚀开裂敏感性评估

更新时间：2025-12-10

- 冷高压分离器在H₂S环境下应力腐蚀开裂敏感性评估
- CIESC Journal Issue 12, (2006)
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- Online First：25 December 2006，
  
  Published：25 December 2006
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LI Ming, LI Xiaogang, CHEN Gang, et al. 冷高压分离器在H₂S环境下应力腐蚀开裂敏感性评估[J]. CIESC Journal, 2006, (12).
DOI：

LI Ming, LI Xiaogang, CHEN Gang, et al. 冷高压分离器在H₂S环境下应力腐蚀开裂敏感性评估[J]. CIESC Journal, 2006, (12).
DOI：

摘要

针对制造过程中由于开孔失误而进行补焊的冷高压分离器在高压、高浓度的H2S环境的使用安全问题，采用了电化学充氢、恒应变和慢拉伸的实验方法，研究了制造冷高压分离器的主体材料16Mn(HIC)钢和普通的16Mn钢及其焊缝的氢扩散系数，在不同H2S浓度、pH值，模拟冷高压分离器操作环境溶液和实际溶液中的腐蚀规律和硫化氢应力腐蚀开裂（SSCC）敏感性，结合实际腐蚀环境的检测和分析结果，对补焊后的冷高压分离器的使用安全给出了综合评估.

Abstract

An incorrect hole on a cold-high pressure segregator was plugged up by welding.The cold-high pressure segregator runs in the environment of high pressure and high H2S.Accordingly

the accident of sulfide stress corrosion cracking (SSCC) should be taken into account.The SSCC sensitivity and cracking time of 16Mn(HIC) steel used to make the cold-high pressure segregator and common 16Mn steel in solutions with various H2S contents and pH values

simulated solution and operating solution were investigated by constant strain bend and slow strain rate test (SSRT).Hydrogen diffusion coefficients of 16Mn(HIC) steel

16Mn steel and their welded seams were also tested by the electrolyte hydrogen charged method.Safety evaluation of the cold-high pressure segregator was given with above results.

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冷高压分离器在H2S环境下应力腐蚀开裂敏感性评估

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冷高压分离器在H₂S环境下应力腐蚀开裂敏感性评估