管道开裂原因分析-修改

Pipeline Cracking Cause Analysis

  • 摘要: 某脱甲烷再沸器管道发生开裂泄漏,本文对失效管道母材和焊缝进行了化学成分分析、硬度测定、金相分析、断口微观形貌以及垢物成分分析。结果表明:管道的开裂是主要是由于原材料中C含量偏高,在焊接过程中造成碳化物沉淀,同时在腐蚀介质的作用下发生的晶间腐蚀。

     

    Abstract: A cracking and leakage incident occurred in a de-methanizer reboiler pipeline. This article presents the chemical composition analysis, hardness testing, metallographic examination, fracture microscopic morphology, and scale component analysis of both the base metal and weld joints of the failed pipeline. The results indicate that the primary cause of the pipeline cracking was the high carbon content in the raw material, which led to carbide precipitation during the welding process. Additionally, intergranular corrosion occurred under the influence of the corrosive medium.

     

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