The Research on Erosion Wastage at High Temperature on Boiler Tubes of the Pulverized Coal Fired Power Station for Arc Spraying Composite Coatings
Several novel cored wires for producing FesAl intermetallic coating, Fe3AlWC intermetallic coating, FeCrAl/WC intermetallic coating and FeCrNi/WC intermetallic coating by arc spraying were developed. The erosion wastage at high temperature of coatings was researched with different impingement angles and temperatures. The results indicated that impingement angle and temperature greatly affected FeCrAl/WC coating and Fe3Al/WC coating on erosion wastage. At the same time, the FeCrAl/WC coating had little effects on different temperature while impingement angle was 90°and different impingement angle while temperature was 650℃. As compared with water wall tube material (G20 steel) of the power station boiler, the erosion resistance rates at high temperature of Fe3Al coating, Fe3A1/WCcoating and FeCrAl/WC coating were higher. The erosion resistance rate of Fe3A1 coating was 1.4～2.91 times of that of G20 steel when temperature was 650℃ and particle was polygonal silica. At the same time, the erosion resistance rates of Fe3Al/WC coating and FeCrAl/WC coating was 1.4～3.06 and 1.94～2.89 times respectively. The results indicated that erosive condition of high temperature flue gas and flying ash mixture on boiler tubes of the pulverized coal fired power station could be solved with Fe3Al coating, Fe3Al/WC coating and FeCrAl/WC coating.
boiler tube composite coating erosion wastage at high temperature
HU Junzhi MA Shining CHEN Xuerong
Armored Force Engineering Academy, National Key Laboratory for Remanufacturing, China
国际会议
The First International Conference on Maintenance Engineering(首届维修工程国际学术会议)
成都
英文
770-776
2006-10-15（万方平台首次上网日期，不代表论文的发表时间）