屏式过热器T91材质爆管分析  

Analysis on Bursting of Platen Superheater T91 Tube

作　　者：谭永生[1] 苏晓磊[1] 郑准备 张兵[3] 张李峰[3] TAN Yongsheng SU Xiaolei ZHENG Zhunbei ZHANG Bing ZHANG Lifeng(College of Mechanical ＆ Electrical Engineering, Xi＇an Polytechnic University, Xi＇an 710048, China China Datang Northwest Electric Power Test and Research Institute, Xi＇an 710065, China Shaanxi Electric Power Research Institute, Xi＇an 710054,China)

机构地区：[1]西安工程大学机电工程学院,陕西西安710048 [2]大唐西北电力试验研究所,陕西西安710065 [3]陕西电力科学研究院,陕西西安710054

出　　处：《热加工工艺》2017年第2期254-256,262,共4页Hot Working Technology

基　　金：西安市科技计划项目(CXY1425)

摘　　要：某电厂屏式过热器T91管段发生两次爆管,对爆管进行一系列理化试验(包括宏观检查、元素分析、室温力学性能、金相检查、硬度试验等)。结果表明:1号爆破管符合短时过热特征,2号爆破管符合长时过热特征,并对两次爆管机理进行分析。The tube bursting of platen superhester T91 tube of one power plant takes place twice in a period. The bursting tube was characterized by physical and chemical test （including macroseopieal inspection, chemistry element analysis, mechanical properties at room temperature, metaUographic analysis and hardness test）. The results show that No.1 tube presents short-term overheating and No.2 tube shows long-term overheating. Then, the mechanisms for twice bursting of platen superheater were discussed.

关 键 词：屏式过热器 T91 爆管 失效分析 

分 类 号：TM621.2[电气工程—电力系统及自动化] TG111.91[金属学及工艺—物理冶金]