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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。
The problem of squibing caused by abrasion of fly ash in coal-fired boilers has always been an urgent issue for the industry. Experimental studies were conducted to determine the effect of CO 2 contained in the gas stream on erosive wear properties of 20 # carbon steel at a temperature between 250 and 450 ° C and compared with the results previously reported for compressed air flow A The test results show that the wear law of 20 # carbon steel after adding CO2 gas flow has not changed, and the relative wear amount decreases first and then increases with the increase of temperature. At the same time, due to the interaction between oxidative corrosion and erosion, the erosive wear of 20 # carbon steel increased significantly with the addition of CO2 gas flow.