机电工程技术
機電工程技術
궤전공정기술
MACHANICAL & ELECTRICAL ENGINEERING TECHNOLOGY
2015年
2期
107-110
,共4页
爆管%金相分析%能谱分析
爆管%金相分析%能譜分析
폭관%금상분석%능보분석
tube bursting%metallographic analysis%energy spectrum analysis
针对某电厂锅炉高温过热器管屏运行过程中出现的爆管事故，采用宏观分析、内窥检查、厚度测试、显微硬度测试、力学性能试验、光谱分析、能谱分析、金相分析等方法进行试验分析，试验结果发现高温过热器管材料组织存在缺陷，产生微裂纹，在运行中进一步发展，最后在钢管薄弱位置（损伤处）造成短时过热爆管。
針對某電廠鍋爐高溫過熱器管屏運行過程中齣現的爆管事故，採用宏觀分析、內窺檢查、厚度測試、顯微硬度測試、力學性能試驗、光譜分析、能譜分析、金相分析等方法進行試驗分析，試驗結果髮現高溫過熱器管材料組織存在缺陷，產生微裂紋，在運行中進一步髮展，最後在鋼管薄弱位置（損傷處）造成短時過熱爆管。
침대모전엄과로고온과열기관병운행과정중출현적폭관사고，채용굉관분석、내규검사、후도측시、현미경도측시、역학성능시험、광보분석、능보분석、금상분석등방법진행시험분석，시험결과발현고온과열기관재료조직존재결함，산생미렬문，재운행중진일보발전，최후재강관박약위치（손상처）조성단시과열폭관。
In this paper,the burst of high-temperature superheater tubes of the boiler was studied. Several methods were adopted such as macroscopic analysis, endoscopic, thickness measuring, micro hardness testing, mechanical property testing, spectral analysis, energy spectrum analysis, metallographic analysis etc. The results showed that the microstructure didn't comply with the standard, which made the micro cracks. It developed further and leaded to momentary overheating squib of the burst of high-temperature superheater tubes.
