针对大型轴流式水轮机叶片的空间几何形状要求高和大面积喷焊受热极易产生变形等问题 ,采用由外向内、由薄到厚、由点到面、对称喷焊工艺和叶片刚性网架固定等技术措施 ,得到了表面平整、内在质量优良的涂层 .叶片喷焊后经组合样板检测变形量很小 ,无需进行修理即可组装运行 ,并获得了优良的耐空蚀和泥砂磨损的性能 ,延长了水轮机的使用寿命 In view of the high spatial geometry requirements of large axial turbine blades and the large deformation of the large-area spray welding, such as deformation from the outside to the inside, from thin to thick, from point to plane, symmetrical spray welding process and blade rigid grid Fixed and other technical measures, get a smooth surface, excellent quality of the internal coating. After the blade spatter through the combination of samples to detect the deformation is small, without repair can be assembled and run, and get excellent resistance to cavitation and sand abrasion performance , To extend the life of the turbine