| 摘要 |
The cutting of the tube (4) at its ends adjacent to the first and the second connection piece (14, 15) is carried out, and the metal of the zones (16, 16') joining the tube (4) to each of the connection pieces (14, 15) is eliminated. The cutting and elimination of at least one portion of the tube (4) adjacent to at least one of the connection pieces (14, 15) are carried out. A plug (24, 30) of tubular shape, the diameter of which is smaller than the inside diameter of the tube (4), is introduced into each of the ends of the tube (4) in place inside the heat exchanger, in such a way that the plug has a closed end (24a, 30a) on the inside of the tube (4) and an opposite end arranged on the inside of the corresponding connection piece (14, 15). The plugs (24, 30) are fixed in place in the connection pieces (14, 15), and a continuous sealing weld is made between each of the plugs (24, 30) and the corresponding connection piece (14, 15), the tube (4) having some freedom of movement in the longitudinal direction in relation to the plugs (24, 30). …<IMAGE>… |
