Failure Analysis of a Service Tube

5th Annual International Conference on Material Science and Engineering

Xie, Zhongdong^1 ; Cai, Weiguo^1 ; Li, Zhenxing^1 ; Guan, Yiming^1 ; Zhang, Baocheng^1 ; Yang, Xiaotong^1

Department of Machinery and Power Engineering, Dalian Ocean University, Dalian, Liaoning, China^1

关键词: Chemical composition analysis;    Fertilizer plant;    Integrated assessment;    Local overheating;    Macro- and microstructure;    Mechanics property;    Penetrant testing;    Performance analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/275/1/012026/pdf
DOI  :  10.1088/1757-899X/275/1/012026

来源: IOP

【 摘 要 】

One tube was cracked used in the primary reformer furnace in a fertilizer plant for two and half years. In order to find out the causes of cracking, the methods for chemical composition analysis, macro- and microstructure analysis, penetrant testing, weld analysis, crack and surface damage analysis, mechanics property analysis, high temperature endurance performance analysis, stress and wall thickness calculation were adopted. The integrated assessment results showed that the carbon content of the tube was in the lower limit of the standard range; the tube effective wall thickness was too small; local overheating leads to tube cracking in use process.