某火电厂顶棚过热器管焊后热处理胀粗原因分析  

Analysis on the Causes of Bulge of Ceiling Superheater Tube of a Thermal Power Plant after Postweld Heat Treatment

作　　者：唐哲 欧阳波 张希旺 汤国乐 Tang Zhe;Ouyang Bo;Zhang Xiwang;Tang Guole(Hunan Special Equipment Inspection and Testing Institute, Changsha 410117)

机构地区：[1]湖南省特种设备检验检测研究院,长沙410117

出　　处：《中国特种设备安全》2025年第3期25-28,33,共5页China Special Equipment Safety

摘　　要：某新建1000 MW机组火电厂锅炉顶棚过热器管焊后热处理有轻微胀粗。本文一方面通过对焊接和热处理工艺及执行情况进行审查,另一方面通过材料成分光谱检测、金相组织分析及力学性能测试等,综合分析了胀粗产生的可能性原因,并提出了尽量避免此类情况发生的预防性措施。The superheater tube of the boiler roof of a newly built 1000 MW thermal power plant was slightly swollen after postweld heat treatment.On the one hand,through the review of welding and heat treatment process and implementation,on the other hand,through the spectrum detection of material composition,metallography analysis and mechanical property testing,the paper comprehensively analyzes the possible causes of swelling,and puts forward preventive measures to avoid such cases as far as possible.

关 键 词：顶棚过热器管 胀粗 热处理 变形 

分 类 号：X933.2[环境科学与工程—安全科学]