To provide an inexpensive joining method of an aluminum pipe and a copper pipe which can improve joining quality, a joining structure and a heat exchanger having the joining structure.
The joining method which joins the aluminum pipe 3 and the copper pipe 4 via a stainless pipe 1 is composed of: a first step in which both ends 2a, 2b of the stainless pipe 1 are applied with pipe contraction processing, nickel plating 9 is applied to the whole surface of the stainless pipe 1, and the copper pipe 4 and the stainless pipe 1 are brazed in a furnace by inserting and arranging one end 2a of the stainless pip 1 in the copper pipe 4; and a second step in which the aluminum pipe 3 and the stainless pipe 1 are aluminum-brazed by inserting and arranging the other end 2b of the stainless pipe 1 in the aluminum pipe 3 after the first step.
OKAMOTO KOICHI
TSUCHIYA TOSHIAKI
FUJI ELECTRIC RETAIL SYSTEMS
| JPH08267228A | 1996-10-15 | |||
| JPH0371973A | 1991-03-27 | |||
| JPS513417U | 1976-01-12 | |||
| JPS57159261A | 1982-10-01 | |||
| JPH01157768A | 1989-06-21 | |||
| JPS57107083U | 1982-07-01 | |||
| JPH04138587U | 1992-12-25 |