20G钢锅炉水冷壁管爆管原因分析  

Cause Analysis on Burst of 20G Steel Boiler Water Wall Tube

作　　者：张鹏鹏 姜勇[1,2] 张良杰 杨子奇 ZHANG Pengpeng;JIANG Yong;ZHANG Liangjie;YANG Ziqi(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Key Lab of Design and Manufacture of Extreme Pressure Equipment,Nanjing 211816,China;Henan Pinggao Electric Equipment Co.,Ltd.,Pingdingshan 467000,China)

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816 [2]极端承压装备设计与制造重点实验室,江苏南京211816 [3]河南平高电力设备有限公司,河南平顶山467000

出　　处：《热加工工艺》2022年第4期159-162,共4页Hot Working Technology

基　　金：基于碳化物相结构法的高温管道剩余寿命预测(KJ(Y)2016015)。

摘　　要：借助光学显微镜、扫描电镜、能谱分析仪、直读光谱仪对某热电厂20G钢锅炉水冷壁失效管进行宏观分析、材质复检、断口分析、硬度测试、常温及高温力学性能测试等,分析其爆管原因。结果表明:该水冷壁管在服役过程中经历了短时超温,且最高温度达到854℃以上,最终导致爆管的发生。The cause of burst of 20G steel boiler water wall tube in a power plant was analyzed by macro analysis,chemical composition testing,fracture analysis,hardness testing,mechanical performance testing using optical microscope,scanning electron microscope,EDS and direct reading spectrometer.The results show that the water wall tube undergoes short-time overtemperature,the highest temperature is above 854℃,which leads to the burst of the boiler water wall tube eventually.

关 键 词：水冷壁管 爆管 短时超温 20G钢管 

分 类 号：TG111.91[金属学及工艺—物理冶金]