20碳钢在腐蚀性气流环境中飞灰冲蚀磨损试验研究  

Experimental Study on Fly Ash Erosive Wear of Carbon Steel 20# in Corrosive Gas Environment

作　　者：赵宪萍[1] 朱崇武[1] 叶桂林[1] 孙坚荣[1] 潘卫国[1] 

机构地区：[1]上海电力学院能源与机械工程学院,上海200090

出　　处：《动力工程学报》2015年第11期944-948,共5页Journal of Chinese Society of Power Engineering

基　　金：上海市地方能力建设资助项目(13160501000)

摘　　要：利用热态飞灰磨损试验台,向试验气流中加入一定量的SO2和CO2气体,在250~500℃内进行电厂20碳钢金属材料的耐冲蚀磨损性能试验,研究SO2和CO2气体对金属冲蚀磨损性能的影响,并对不同气流环境下的试验结果进行比较.结果表明：随着温度的升高,20碳钢在试验温度范围内均出现相对磨损量先减小后增大的现象;20碳钢在加入SO2或CO2气流环境下的相对磨损量明显高于只含压缩空气环境下的相对磨损量,可见电站锅炉烟气流中CO2和SO2气体能够加速20碳钢的冲蚀磨损.To study the effects of corrosive SO2 and CO2 in flue gas on erosion resistance of metallic materials used in power plants, hot-state erosive wear experiments of carbon steel 20 # were carried out at a temperature of 250-500 ℃ by adding SO2 and CO2 to the test flow, and the results were compared under different airflow environments. Results show that with the rise of temperature, the relative wear of carbon steel 20 # reduces first and increases later on in the range of test temperature, and the relative wear in corrosive gas environment containing SO2 and CO2 is obviously higher than that in compressed air environment, indicating that the content of SO2 and CO2 in boiler flue gas may accelerate the erosive wear of carbon steel 20 #.

关 键 词：电站锅炉 20碳钢 冲蚀磨损 CO2 SO2 

分 类 号：TG17[金属学及工艺—金属表面处理]