含CO_2气流对20号碳钢冲蚀磨损性能影响的试验研究  

Experimental Study of the Influence of a CO_2 contained Gas Flow on the Erosion and Wear Performance of 20 Carbon Steel

作　　者：赵宪萍[1] 朱崇武[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,上海杨浦200090

出　　处：《热能动力工程》2015年第1期78-80,165,共3页Journal of Engineering for Thermal Energy and Power

基　　金：上海市地方能力建设项目(13160501000)

摘　　要：火电站燃煤锅炉由于飞灰冲蚀磨损而导致爆管的问题一直是行业急待解决的问题。用试验研究方法,在温度为250-450℃之间,研究了气流中含CO2气体时对20号碳钢冲蚀磨损性能的影响,并与之前在压缩空气流中做的此类试验结果做了比较。试验结果表明,加入CO2气流后20号碳钢的磨损规律未变,其相对磨损量随温度的升高先减小后增大。同时,由于氧化腐蚀和冲蚀的交互作用,加入CO2气流后20号碳钢的冲蚀磨损量明显增大。Tube rupture of coal-fired boilers in thermal power plants arisen from the erosion and wear by flying ash is considered as a problem urgently to be solved in the sector. The authors studied the influence of a gas flow contained carbon dioxide on the erosion and wear performance of 20 carbon steel by using an experimental study method when the temperature is within a range from 250 ℃ to 450 ℃ and compared with the results of the test of the same kind previously made in the compressed air flow. The test results show that the wear and tear law of 20 carbon steel keeps unchanged after the carbon dioxide gas flow is added and the relative amount of steel worn and torn will first decrease and then increase with an increase of the temperature. At the same time,due to the interaction of oxidized corrosion and erosion,the erosion and wear amount of 20 carbon steel will conspicuously increase after an additionof carbon dioxide to the gas flow.

关 键 词：飞灰冲蚀磨损 CO2 20号碳钢 燃煤锅炉 

分 类 号：TK224.9[动力工程及工程热物理—动力机械及工程]