CAJ | 학술논문

采用宏观形貌检查、金相检验、化学成分分析、扫描电镜及能谱分析等手段分析了矿浆自蒸发器（闪蒸槽）的泄漏原因。结果表明，应力腐蚀破裂（碱脆）是其开裂泄漏的根本原因。合理选材、控制作业温度、降低碱液浓度、提高焊接质量、消除管道内应力是避免碱脆发生的有效手段。
채용굉관형모검사、금상검험、화학성분분석、소묘전경급능보분석등수단분석료광장자증발기（섬증조）적설루원인。결과표명，응력부식파렬（감취）시기개렬설루적근본원인。합리선재、공제작업온도、강저감액농도、제고한접질량、소제관도내응력시피면감취발생적유효수단。
By means of macroscopic inspection,chemical analysis,metallographic examination,scanning electron microscopy and EDS analysis,the leakage cause of a slurry self evaporator (flash drum)was analyzed.The results indicated that stress corrosion cracking (alkali embrittlement)was the main leakage reason,and it could be prevented by suitable selection of materials,working temperature control,alkali concentration decrease,improvement of welding quality and reduction of inner-stress of pipeline.