在役1Cr5Mo管道焊接裂纹产生原因及对策

doi:10.3969/j.issn.1005-8168.2025.01.004

石油化工设计 ›› 2025, Vol. 42 ›› Issue (1): 13-16.doi: 10.3969/j.issn.1005-8168.2025.01.004

在役1Cr5Mo管道焊接裂纹产生原因及对策

刘立忠

联合石油化工有限公司福建泉州36200

出版日期:2025-02-25 发布日期:2025-03-03
作者简介:刘立忠，1991年毕业于福州大学化工设备与机械专业，学士学位，工程师，现从事石化装置检维修施工管理工作

Causes and Countermeasures for Welding Cracks in 1Cr5Mo Steel Pipelines in Service

Liu Lizhong

Fujian Refining & Petrochemical Company Limited, Quanzhou, Fujian, 362000

Online:2025-02-25 Published:2025-03-03

摘要/Abstract

摘要： 对石油化工生产装置中运行多年局部减薄的1Cr5Mo管道进行检修更换，在新旧管道焊接施工中容易出现裂纹缺陷。文中通过分析裂纹外貌特征、焊缝硬度、母材化学成分和管道内壁垢物物相组成，以及从焊接裂纹产生机理和施工过程等方面分析，总结出产生裂纹缺陷的原因。

关键词: 在役管道, 1Cr5Mo钢, 焊接裂纹, 原因分析

Abstract: The 1Cr5Mo pipelines that have been locally thinned after years of operation in petrochemical units are repaired and replaced. Crack defects easily occur during the welding construction of new and old pipelines. In this article, the causes of crack defects are found out by analyzing the appearance characteristics of cracks, the weld hardness, the chemical composition of base metal and the phase composition of scale on the inner wall of pipelines, as well as the mechanism of weld cracks and the construction process.

Key words: pipeline in service, 1Cr5Mo steel, welding crack, cause analysis

刘立忠. 在役1Cr5Mo管道焊接裂纹产生原因及对策[J]. 石油化工设计, 2025, 42(1): 13-16.

Liu Lizhong. Causes and Countermeasures for Welding Cracks in 1Cr5Mo Steel Pipelines in Service[J]. Petrochemical Design, 2025, 42(1): 13-16.

[1]	高进, 张伟, 汪斌. 天然气净化厂DCS系统网络安全现状与改进建议[J]. 石油化工设计, 2021, 38(1): 42-46.
[2]	刘海波，杨刚，宫大印. 液化气塔产品质量波动的原因分析及处理方法[J]. 石油化工设计, 2019, 36(1): 41-43.
[3]	杨永恩. 石油化工管道支吊架设计问题分析及对策研究[J]. 石油化工设计, 2015, 32(1): 46-48.

在役1Cr5Mo管道焊接裂纹产生原因及对策

Causes and Countermeasures for Welding Cracks in 1Cr5Mo Steel Pipelines in Service

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

Metrics

本文评价

推荐阅读 10