| 锅炉顶棚过热器管开裂原因分析 |
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| 引用本文： | 张亚明,姜胜利.锅炉顶棚过热器管开裂原因分析[J].中国材料科技与设备,2014(4):84-86. |
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| 作者姓名： | 张亚明 姜胜利 |
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| 作者单位： | 中国科学院金属研究所,辽宁沈阳110016 |
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| 摘 要： | 对某热电厂3号锅炉的无损探伤检查，发现该炉部分顶棚过热器管的背火面上存在裂纹。通过对过热器管的裂纹形貌、化学成分、金相组织和断口等的分析，确认3号锅炉顶棚过热器管的开裂失效性质属于热疲劳破坏。
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| 关 键 词： | 锅炉 顶棚过热器管 开裂 热疲劳 |
Failure Analysis on the Fracture of Tubes for Roof Superheater in a Boiler |
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| Affiliation: | ZHANG Ya--ming , JIANG Sheng--li (Institute of Metal Research, Chinese Academy of Sciences, Liaoning, Shenyang, 110016, China) |
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| Abstract: | Cracks were found on the side unexposed to fire of tubes for roof superheater in no. 3 boiler of a thermal power plant during NDT inspection. Pipe crack morphology, chemical composition, microstructure and fracture analysis are per- formed, confirming that the cause for no. 3 boiler roof superheater tube cracking failure is thermal fatigue damage. |
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| Keywords: | Boiler Roof superheater tube Cracking Thermal fatigue |
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