典型气轮机叶片热态冲蚀特性综合实验研究  

Comprehensive Experimental Study on Thermal Erosion Characteristics of Typical Gas Turbine Blades

作　　者：张瑞 张浩[1] 鲁嘉华[1] 

机构地区：[1]上海工程技术大学机械工程学院,上海201620

出　　处：《失效分析与预防》2017年第5期290-293,共4页Failure Analysis and Prevention

基　　金：上海市教委085工程项目(JR0901)

摘　　要：气轮机运行过程中,高温含尘气体会对气轮机叶片表面产生不可避免的冲蚀与磨损,不仅破坏气动性能,严重时还可能使构件及设备失效,导致经济性和可靠性均下降。在自行研制的气固两相热态冲蚀实验风洞实验系统中,通过对比基材钢(1Cr12Mo、X20Cr13、2Cr12Ni Mo1W1V、GH738)在不同温度、不同冲角和不同粒径石英砂颗粒冲蚀下的冲蚀率变化,在本实验条件下,得出以下结果:200~300℃时,1Cr12Mo相对于其他3种基材,抗冲蚀性最好,400℃时2Cr12NiMo1W1V与GH738相对其他2种基材抗冲蚀性较好,而500℃时,从整体来看2Cr12NiMo1W1V比GH738抗冲蚀性好。During the operation of gas turbines, erosion and wear were induced by high temperature dusty gas inevitably on the surface of the turbine blades, which damages the aerodynamic performance and may even result in the failure of the components and equipment, leading to the decrease of the economy and reliability. Under the experimental conditions, the following results were obtained by comparing erosion rate change of the base steels（lCrl2Mo, X20Crl3, 2Crl2NiMolWlV, and GH738） under different temperature, different attack angle, and different particle size of quartz sand grains： the corrosion resistance of lC rl2Mo is better than that of the other three substrates at 200 - 300 ℃. The erosion resistance of 2Crl2NiMolWlV and GH738 is better at 400℃ compared with the other two. Moreover, the erosion resistance of 2Crl2NiMolWlV is better than that of GH738 at 500 ℃.

关 键 词：气轮机 叶片 基材钢 气固两相 热态冲蚀 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]