| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for performing brazing efficiently and reliably by adhering of powdery brazing filler metal onto a surface of a joining part with water soluble binder. SOLUTION: After adhering of the water soluble binder 2 in the state of granules of 0.01-2 mm diameter onto the surface of the joining part 1 for brazing, supplying powdery brazing filler metal of 0.01-0.2 mm diameter, after that, brazing heat treatment is performed. Though wettability of the binder 2 is poor, due to uniform distribution of the binder 2 on the surface of the joining part, the powdery brazing filler metal adheres uniformly, and brazing is performed efficiently and reliably.
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