| 摘要 |
PROBLEM TO BE SOLVED: To provide a brazing method, by which generation of crevice corrosion at a joint part is prevented and throwing of a brazing filler metal is stabilized to obtain a predetermined joint strength when brazing a stainless steel tube, which is used as one of two tubes to be brazed, to the other tube.SOLUTION: After fittedly inserting the tube end of either of two tubes, of which at least one tube is a stainless steel tube, into the inside of the end of the other tube, both tubes are brazed by pouring a brazing filler metal between the inner peripheral surface of the outside tube and the outer peripheral surface of the inside tube at the ends of the two tubes. Before being fittedly inserted, the front end of one tube to be the inside tube is diameter-reduced in advance and further the front end of the other tube to be the outside tube is preferably flared in advance, and then the two tubes are fittedly inserted and brazed. |
