水轮机在运行中受水流作用常常使通流部件(如导叶、转轮叶片、轮环、底环等)产生磨损、气蚀,造成机组效率下降,出力降低,不但使检修时间延长,增加了检修工作量,而且严重影响电站的安全、经济运行,给工农业生产带来损失。近几年国内有关单位,对水轮机过流部件的抗泥 Turbine by the water flow in the operation often make through parts (such as guide vanes, runner blades, rings, bottom rings, etc.) wear and cavitation, resulting in reduced unit efficiency, reduce output, not only to extend the overhaul, an increase of Overhaul workload, but also seriously affect the safety of power plants, economic operation, to the loss of industrial and agricultural production. In recent years, the relevant domestic units, anti-mud on the turbine flow components