| 摘要 |
PROBLEM TO BE SOLVED: To provide a brazing method of an aluminium heat exchanger for forming a brazing part having thickness with corrosion resistance maintained.SOLUTION: Provided is a brazing method of an aluminium heat exchanger for brazing a first base material part (2) having a zone to be welded (22), and a wall part (23) extending upward from the zone to be welded (22), with a second base material part (1). The brazing method of the aluminium heat exchanger includes the steps of: (S2) brazing the second base material part (1) and forming a dam part (13) on a surface of the second base material part (1) while separating the dam part (13) from the wall part (23), after assembling the second base material part (1) so as to be in contact with the zone to be welded (22) and separated from the wall part (23); and (S3) forming a brazing part (14) by supplying a brazing material and brazing it between the wall part (23) and the dam part (13). |
