天然气加气站06Cr19Ni10法兰断裂失效分析

IF 3 2区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Pressure Vessels and Piping Pub Date : 2025-04-25 DOI:10.1016/j.ijpvp.2025.105536

Chengli Song, Jinheng Luo, Lifeng Li, Gang Wu

{"title":"天然气加气站06Cr19Ni10法兰断裂失效分析","authors":"Chengli Song, Jinheng Luo, Lifeng Li, Gang Wu","doi":"10.1016/j.ijpvp.2025.105536","DOIUrl":null,"url":null,"abstract":"<div><div>A flange at a natural gas processing station suffered a fracture failure, resulting in a leakage and fire accident. In order to analyze the causes of failure, macroscopic inspection and measurement, non-destructive testing, material property testing and fracture micro-characterization analysis were carried out on the flange. The obtained results showed that the chemical composition and hardness of the flange did not meet the requirements of the manufacturing standard JB 4728-2000 for 06Cr19Ni10 materials. The metallographic structure of the flange contained large amount of C nonmetallic inclusions. In addition, its fracture is flat and without plastic deformation. The microstructure of the fracture is characterized by expansion along the grain boundaries, accompanied by secondary cracks. Eventually, the reason causing fracture of flange is very low impact toughness, and then low-stress brittle cracking occurs under the low-temperature service environment, working load and other additional loads. Ultimately, technical suggestions are provided to flange manufacturers and users to avoid the recurrence of such accidents.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"216 ","pages":"Article 105536"},"PeriodicalIF":3.0000,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Failure analysis of 06Cr19Ni10 flange fracture at a natural gas processing station\",\"authors\":\"Chengli Song, Jinheng Luo, Lifeng Li, Gang Wu\",\"doi\":\"10.1016/j.ijpvp.2025.105536\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>A flange at a natural gas processing station suffered a fracture failure, resulting in a leakage and fire accident. In order to analyze the causes of failure, macroscopic inspection and measurement, non-destructive testing, material property testing and fracture micro-characterization analysis were carried out on the flange. The obtained results showed that the chemical composition and hardness of the flange did not meet the requirements of the manufacturing standard JB 4728-2000 for 06Cr19Ni10 materials. The metallographic structure of the flange contained large amount of C nonmetallic inclusions. In addition, its fracture is flat and without plastic deformation. The microstructure of the fracture is characterized by expansion along the grain boundaries, accompanied by secondary cracks. Eventually, the reason causing fracture of flange is very low impact toughness, and then low-stress brittle cracking occurs under the low-temperature service environment, working load and other additional loads. Ultimately, technical suggestions are provided to flange manufacturers and users to avoid the recurrence of such accidents.</div></div>\",\"PeriodicalId\":54946,\"journal\":{\"name\":\"International Journal of Pressure Vessels and Piping\",\"volume\":\"216 \",\"pages\":\"Article 105536\"},\"PeriodicalIF\":3.0000,\"publicationDate\":\"2025-04-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Pressure Vessels and Piping\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0308016125001061\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Pressure Vessels and Piping","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0308016125001061","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}

引用次数: 0

摘要

某天然气加气站法兰发生断裂失效，造成泄漏和火灾事故。为了分析失效原因，对法兰进行了宏观检测、无损检测、材料性能测试和断口微观表征分析。结果表明，法兰的化学成分和硬度不符合制造标准JB 4728-2000对06Cr19Ni10材料的要求。法兰的金相组织中含有大量的非金属夹杂物。此外，其断口平整，无塑性变形。断口组织的特征是沿晶界扩展，并伴有二次裂纹。最终导致法兰断裂的原因是冲击韧性非常低，然后在低温使用环境、工作载荷和其他附加载荷下发生低应力脆性开裂。最终为法兰生产厂家和用户提供技术建议，避免此类事故再次发生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Failure analysis of 06Cr19Ni10 flange fracture at a natural gas processing station

A flange at a natural gas processing station suffered a fracture failure, resulting in a leakage and fire accident. In order to analyze the causes of failure, macroscopic inspection and measurement, non-destructive testing, material property testing and fracture micro-characterization analysis were carried out on the flange. The obtained results showed that the chemical composition and hardness of the flange did not meet the requirements of the manufacturing standard JB 4728-2000 for 06Cr19Ni10 materials. The metallographic structure of the flange contained large amount of C nonmetallic inclusions. In addition, its fracture is flat and without plastic deformation. The microstructure of the fracture is characterized by expansion along the grain boundaries, accompanied by secondary cracks. Eventually, the reason causing fracture of flange is very low impact toughness, and then low-stress brittle cracking occurs under the low-temperature service environment, working load and other additional loads. Ultimately, technical suggestions are provided to flange manufacturers and users to avoid the recurrence of such accidents.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

International Journal of Pressure Vessels and Piping 工程技术-工程：机械

CiteScore

5.30

自引率

13.30%

发文量

208

审稿时长

17 months

期刊介绍： Pressure vessel engineering technology is of importance in many branches of industry. This journal publishes the latest research results and related information on all its associated aspects, with particular emphasis on the structural integrity assessment, maintenance and life extension of pressurised process engineering plants. The anticipated coverage of the International Journal of Pressure Vessels and Piping ranges from simple mass-produced pressure vessels to large custom-built vessels and tanks. Pressure vessels technology is a developing field, and contributions on the following topics will therefore be welcome: • Pressure vessel engineering • Structural integrity assessment • Design methods • Codes and standards • Fabrication and welding • Materials properties requirements • Inspection and quality management • Maintenance and life extension • Ageing and environmental effects • Life management Of particular importance are papers covering aspects of significant practical application which could lead to major improvements in economy, reliability and useful life. While most accepted papers represent the results of original applied research, critical reviews of topical interest by world-leading experts will also appear from time to time. International Journal of Pressure Vessels and Piping is indispensable reading for engineering professionals involved in the energy, petrochemicals, process plant, transport, aerospace and related industries; for manufacturers of pressure vessels and ancillary equipment; and for academics pursuing research in these areas.