| 摘要 |
<p>The invention relates to a method for producing a heat exchanger, whereby two adjacent metal pipes (1) are connected to each other on their open ends by respective U-shaped end pipes (3) in regions of overlap, using glue (5). The method is characterized by the following steps: a) applying glue to the regions of overlap of the U-shaped end pipes, selecting the glue in such a manner that it is solid and not tacky after application to the regions of overlap of the U-shaped end pipe and before connection to the metal pipes (1) at temperatures of not more than 30°C and does not cure without an activation step, b) the end pipe is placed onto the metal pipes or inserted into the metal pipes with the region of overlap and the glue applied thereto and c) the glue is activated by irradiation with high energy radiation or thermally prior to or after step b) so that it cures after step b) and connects the metal pipe to the U-shaped end pipe in the region of overlap.</p> |
