不锈钢波纹管膨胀节开裂原因
Cracking reason of stainless steel bellows expansion joint
摘 要
某石化公司不锈钢波纹管膨胀节发生开裂,采用宏观观察、化学成分分析、金相检验、能谱分析等方法研究其开裂原因。结果表明:波纹管膨胀节长期处于氯化物水溶液环境中,在波纹管加工时产生的残余应力以及工作中产生的应力作用下,不锈钢波纹管膨胀节发生氯化物应力腐蚀开裂。
波纹管膨胀节
应力腐蚀开裂
stainless steel
bellows expansion joint
stress corrosion cracking
Abstract
The stainless steel bellows expansion joint of a petrochemical company cracked. The cracking reason was studied by means of macroscopic observation, chemical composition analysis, metallographic examination and energy spectrum analysis. The results showed that the bellows expansion joint was in the environment of chloride aqueous solution for a long time. Under the residual stress generated during the processing of the bellows and the stress generated during the work, the chloride stress corrosion cracking of the stainless steel bellows expansion joint occured.
中图分类号 TG115.2 TB31 DOI 10.11973/lhjy-wl202306005
所属栏目 专题报道
基金项目 国家重点研发计划资助项目(2021YFC3001805)
收稿日期 2022/11/29
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备注李家兴(1988-),男,本科,工程师,主要从事特种设备检验检测工作
引用该论文: LI Jiaxing,CHENG Lei,BAI Xuegang,KANG Haoyuan. Cracking reason of stainless steel bellows expansion joint[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2023, 59(6): 19～21
李家兴,成雷,白学刚,康昊源,中国特种设备检测研究,北京,国家市场监管技术创新,中心,北京. 不锈钢波纹管膨胀节开裂原因[J]. 理化检验－物理分册, 2023, 59(6): 19～21
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参考文献
【1】陈彩霞,郑杨艳.316L不锈钢波纹管膨胀节开裂原因分析与预防[J].理化检验(物理分册),2015,51(1):55-58.
【2】汤鹏杰,芮乐顺,梁斌.S30408不锈钢法兰开裂原因[J].理化检验(物理分册),2022,58(8):46-49.
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