600MW机组次末级叶片断裂原因分析  

Fracture Reason Analysis for Last-but-one Blade of 600 MW Steam Turbine

作　　者：郑坊平[1] 刘树涛[1] 王弘喆[1] 唐丽英[1] 

机构地区：[1]西安热工研究院有限公司,西安710032

出　　处：《理化检验（物理分册）》2010年第3期197-200,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：通过化学成分分析、力学性能检验、金相检验及断口分析等方法,对某厂600 MW机组次末级叶片断裂原因进行了分析。结果表明:叶片的断裂属于高周疲劳断裂。并针对叶片失效情况提出了预防措施。By means of chemical composition analysis, mechanical properties testing, metallographic examination and fracture analysis, the fracture reason of the last-but-one blade of 600 MW steam turbine was analyzed. The results showed that the fracture was high-cycle fatigue fracture. Some preventive measures for the blade failure were brought forward.

关 键 词：汽轮机 叶片 疲劳断裂 显微组织 力学性能 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]