[1]齐丽华,王振川,王玉雷,等.压气站SCH80S三通管件泄漏失效分析*[J].焊管,2016,39(10):48-52.[doi:DOI: 10.19291/j.cnki.1001-3938.2016.10.012]
 QI Lihua,WANG Zhenchuan,WANG Yulei,et al.Leakage Failure Analysis of Compressor Station SCH80S Tee Pipe Fitting[J].,2016,39(10):48-52.[doi:DOI: 10.19291/j.cnki.1001-3938.2016.10.012]
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压气站SCH80S三通管件泄漏失效分析*
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
39
期数:
2016年第10期
页码:
48-52
栏目:
工艺与设备
出版日期:
2016-10-28

文章信息/Info

Title:
Leakage Failure Analysis of Compressor Station SCH80S Tee Pipe Fitting
文章编号:
DOI: 10.19291/j.cnki.1001-3938.2016.10.012
作者:
齐丽华1王振川2王玉雷2战 彬2王向阳2张伟卫1王 鹏1
1. 中国石油集团石油管工程技术研究院, 西安 710077;
2. 中国石油管道建设项目经理部, 北京 100101
Author(s):
QI Lihua1 WANG Zhenchuan2 WANG Yulei2ZHAN Bin2 WANG Xiangyang2 ZHANG Weiwei1 WANG Peng1
1. CNPC Tubular Goods Research Center, Xi’an 710077, China;
2. Pipeline Construction Project Manager Department of CNPC, Beijing 100101, China
关键词:
不锈钢管件裂纹微观组织断口形貌
Keywords:
stainless steel pipe fitting crack microstructure fracture morphology
分类号:
TG142
DOI:
DOI: 10.19291/j.cnki.1001-3938.2016.10.012
文献标志码:
B
摘要:
为了分析高压油气输送管道压气站阀门不锈钢三通管件失效泄漏的原因,结合不锈钢三通管件制作工艺,运用直读光谱仪、光学显微镜、扫描电镜等对三通管件的化学成分、微观组织、断口形貌和硬度等进行了综合分析及研究。结果显示,DN  25 mm×4.5 mm SCH80S三通的化学成分基本符合标准要求,导致不锈钢三通管件发生失效的主要原因是:在制作过程中的热处理工艺不当,导致整体三通硬度高而塑性和韧性急剧降低,在外界因素下起裂后迅速扩展形成贯穿裂纹。
Abstract:
Aiming at stainless steel tee pipe fitting leakage failure, which appeared in high-pressure oil and gas pipelines compressor station valve, combined with the manufacturing process of stainless steel tee pipe fitting,  it analyzed the properties of tee pipe fitting combined its manufacturing process by using direct reading spectrometer, optical microscope, scanning electron microscope and so on. The results indicated that the chemaical composition of DN 25 mm×4.5 mm SCH80S tee can basicly meet the requirements of standards. The main reason of stainless steel tee pipe fittings failure was the improper heat treatment technology in manufacturing process, caused the overall tee pipe fitting high hardness and plasticity and toughness drastically reduced, under external factors crack initiation happened, immediately extended and formed through-wall cracks.

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备注/Memo

备注/Memo:
收稿日期:2016-06-15
基金项目: 陕西省自然科学基金项目“X100管线钢管环焊缝焊接工艺及组织性能研究”(项目号2012GY2-23); 中国石油天然气股份有限公司科学研究与技术开发项目“高钢级管道环焊质量及载荷影响研究”(项目号2014B-3416-0501)。
作者简介:齐丽华(1973—),女,博士后,目前主要从事高强度级别管线钢的焊接、管体性能基础研究工作。 
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