烟气轮机叶片断裂原因分析  

Rupture Reason Analysis of Gas Expander Blade

作　　者：章文兰[1] 丁利生[1] 张玉峰[1] 

机构地区：[1]兰州石油化工公司机械厂,兰州730060

出　　处：《理化检验（物理分册）》2009年第1期48-52,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用化学成分分析、性能试验和金相检验等方法对运行中断裂的叶片进行了分析。结果表明:长期的超温运行使得该叶片晶粒长大,组织性能发生变化,导致叶片断裂事故的发生。The ruptured blade which had been used for a long time in the gas expander had been analyzed by means of chemical composition analysis, performance test and metallographie experiment. The results showed that, the reason which led to the rupture of blade was the grain growth of the blade material after a long time working under extraordinarily high temperature, and the changing of the mierostructures and properties of the blade.

关 键 词：烟气轮机 叶片 断裂 超温 晶粒 

分 类 号：TQ052[化学工程] TK263.3[动力工程及工程热物理—动力机械及工程]