理化检验-物理分册2017，Vol.53Issue(11)：812-817,6.DOI:10.11973/lhjy-wl201711011
汽轮机叶片断裂原因分析
Analysis on Fracture Reasons of Steam Turbine Blades
付星星 1张梅 1卢柳林1
作者信息
- 1. 东风商用车有限公司 技术中心,十堰 442001
- 折叠
摘要
Abstract
The quality problems of early fracture of last stage blades were found during the expansion and overhaul of the steam turbine unit in a thermal power plant.Methods of fracture analysis, metallographic examination,chemical composition analysis,technology analysis of hardened surface layer were used to analyze the fracture reasons of turbine blades.The results show that:the failure mechanism of steam turbine blades was fatigue fracture;defects of cracks,porosity,non-hardened part and so on existed in hardened layer of the blade surface and reduced the resistant ability of erosion,which was the main reason for the early fatigue fracture of blades.关键词
汽轮机/末级叶片/断裂/表面硬化层/冲蚀Key words
steam turbine/last stage blade/fracture/hardened surface layer/erosion分类
能源科技引用本文复制引用
付星星,张梅,卢柳林..汽轮机叶片断裂原因分析[J].理化检验-物理分册,2017,53(11):812-817,6.
