超超临界机组用SUPER304H炉管局部腐蚀现象分析与对策  

Analysis and Solution to Partial Corrosion of SUPER304H Steel Tube of Boiler for Ultra-Supercritical Electric Power Unit

作　　者：李顺华[1] 

机构地区：[1]广东电网公司电力科学研究院,广州510080

出　　处：《南方电网技术》2011年第A02期118-121,共4页Southern Power System Technology

摘　　要：通过对某沿海在建超超临界机组用SUPER304H锅炉钢管局部腐蚀的宏观形貌、化学成分、金相、扫描电镜及能谱分析，得出其局部腐蚀的主要原因是氯离子引起的孔蚀，并提出了预防措施，为将来设备维护提供了经验积累。Partial corrosion of one SUPER304H steel tube of boiler for ultra-supercritical electric power unit occurred in coastal areas. The macroshape, chemical composition, metallography and microscopic area of corrosion are analyzed. It is found out that it is Cl- caused pitting corrosion. Countermeasures is put forward accordingly, which brings out a practics accumulation for future maintainment.

关 键 词：超超临界机组 SUPER304H 锅炉钢管 孔蚀 

分 类 号：TM721[电气工程—电力系统及自动化]