水轮机转轮在运行一段时间后,会产生不同程度的汽蚀和磨损,它将直接影响水轮机的出力和安全运行.一般对汽蚀都采用堆焊的方法进行修复.但当汽蚀很严重,如叶片穿孔并有大面积缺口,特别是叶片出水边厚度因磨损减薄较多时,不能采用堆焊工艺,修理就比较困难了.为此,我们对转轮的修复进行了试验. Turbine runner after running for a period of time, will have different degrees of cavitation and wear, it will directly affect the turbine output and safe operation .Non-cavitation are generally used to repair welding method.But when the cavitation is very serious, If the blade is perforated and has a large area of ​​notches, especially when the thickness of the water out of the blade is more thinned due to wear and tear, the overlay welding process can not be adopted and the repairing is difficult, and for this reason, we test the repairing of the runner.