[1]聂向晖,李维星,丰振军,等.Q235B消防水管道泄漏原因分析[J].焊管,2022,45(9):42-46.[doi:10. 19291/j.cnki.1001-3938.2022.09.007]
　NIE Xianghui,Li Weixing,FENG Zhenjun,et al.Leakage Cause Analysis of Q235B Fire Water Pipeline[J].,2022,45(9):42-46.[doi:10. 19291/j.cnki.1001-3938.2022.09.007]
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Q235B消防水管道泄漏原因分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
45
期数:
2022年第9期
页码:
42-46
栏目:
失效分析
出版日期:
2022-09-28

文章信息/Info

Title:
Leakage Cause Analysis of Q235B Fire Water Pipeline
文章编号:
10. 19291/j.cnki.1001-3938.2022.09.007
作者:
聂向晖; 李维星; 丰振军; 许彦; 刘永振; 李亮
1.中国石油集团工程材料研究院有限公司，西安710077；2.北京隆盛泰科石油管科技有限公司，北京100101；3.国家管网集团南山(山东)天然气有限公司，山东烟台264000；4.安阳中科工程检测有限公司，河南安阳455111
Author(s):
NIE Xianghui;  Li Weixing; FENG Zhenjun; XU Yan; LIU Yongzhen; LI liang
1. CNPC Tubular Goods Research Institute, Xi’ an 710077, China;2. Beijing Longshine Oil Tubular Technology Co, Ltd., Beijing 100101, China; 3. Pipe China Nanshan(Shandong) LNG Co., Ltd,Yantai 264000 , Shandong, China; 4. Anyang Zhongke Engineering Detecting Co., Ltd., A nyang 455111 ,Henan , China
关键词:
Q235B; 消防水管道; 泄漏; 腐蚀
Keywords:
Q235B ; fire water pipeline;  leakage;  corrosion
分类号:
TG174.1
DOI:
10. 19291/j.cnki.1001-3938.2022.09.007
文献标志码:
B
摘要:
为了研究某Q235B消防水管道泄漏原因，利用宏观检查、理化性能分析、能谱分析等对泄漏管段进行了检验和分析。结果显示：泄漏部位位于钢管外表面冷缠带及环氧涂层脱落处，主要表现为簇状分布的腐蚀坑；管材化学成分、拉伸性能、压扁试验结果满足相关标准要求；管体金相组织均为铁素体+珠光体，组织未见异常；腐蚀坑附近腐蚀产物中主要含有Fe、O、Si、Ca及少量Cl。分析表明,管道泄漏是因为钢管表面冷缠带及底漆脱落，导致钢管金属基体与土壤介质接触，从而产生局部腐蚀及穿孔。
Abstract:
In order to investigate the leakage cause of Q235B fire water pipeline , the leakage pipe section was tested and.analyzed by means of macro inspection, mechanical properties testing and chemical analysis and EDS analysis. The test results showed that the leakage point was located at the place where the cold-tangled belt and epoxy coating fall off, and distributed in clusters corrosion pits. The chemical composition, tensile properties and flattening test results meet the requirements of relevant standards. The metallographic structure of the pipe body is ferrite+pearlite. The corrosion products near the pit mainly contain Fe, O, Si, Ca and a small amount of Cl. The analysis indicates that the leakage of the pipe is caused by the peeling of cold-tangled belt on the surface and primer, which leads to the contact between the metal base of the steel pipe and the soil medium, resulting in local corrosion and perforation.

参考文献/References:

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相似文献/References:

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备注/Memo

备注/Memo:
收稿日期：2022-04-18作者简介：聂向晖(1972—)，男，河南人，高级工程师，现主要从事石油管材无损检测及失效分析工作。
更新日期/Last Update: 2022-09-26