CAJ | 학술논문

针对超临界“W”火焰炉氢腐蚀爆管现象，采用宏观检查和金相检验的方法对水冷壁管爆口进行了检测分析，宏观检查表明爆口附近有多处鼓包、壁厚变薄，金相检验说明了爆口内壁金相组织出现严重的脱碳和沿晶腐蚀裂纹，即高温氢腐蚀。根据水冷壁的材质、超临界水汽特性和水质情况的分析，精处理混床出水氯离子超标是引起此次爆管的一个关键因素。
침대초림계“W”화염로경부식폭관현상，채용굉관검사화금상검험적방법대수랭벽관폭구진행료검측분석，굉관검사표명폭구부근유다처고포、벽후변박，금상검험설명료폭구내벽금상조직출현엄중적탈탄화연정부식렬문，즉고온경부식。근거수랭벽적재질、초림계수기특성화수질정황적분석，정처리혼상출수록리자초표시인기차차폭관적일개관건인소。
For hydrogen corrosion tube failure,visual examination and metallurgy analysis was used for cracks de-tecting. Multiple bloating and wall thickness were discovered in visual examination. Metallurgy analysis discovered decar-burization and intergranular corrosion cracks on inner wall of tube failure,namely hydrogen corrosion of high temperature. According to the analysis of water wall tube material,supercritical water characteristics and water quality,the over standard of Cl- is the key factor of bursting in Mix-bed Outlet Water.