二元流铝叶轮及新型设计的三元曲面叶片窄流道封闭式铝叶轮采用钎焊工艺连接轮盘和轮盖是最合适、最经济的方法之一。本文介绍了试验材料和试验程序；从钎剂、钎料的工艺性能、钎焊工艺参数对钎焊接头强度的影响，钎焊间隙对钎缝质量的影响等方面讨论了试验结果并进行了分析，给出了实际的钎焊叶轮工艺。 Binary flow aluminum impeller and the new design of the ternary curved blade narrow flow channel closed aluminum impeller using brazing technology to connect the wheel disc and wheel cover is the most suitable and most economical method. In this paper, the test materials and test procedures are introduced. The test results are discussed and analyzed from the aspects of flux and brazing process performance, the influence of brazing parameters on the strength of brazed joints and the influence of brazing gap on the brazing seam quality. , Gives the actual brazing impeller process.