| 摘要 |
A method of manufacturing a curved tank wall comprises of: providing a first (1) and a second (2) flat metal plate; placing the two plates flat against each other; mutually connecting the plates by laser (3) welding such that a weld contour is created which forms two side boundaries of a space corresponding with a channel for forming, on the two respective ends of which are situated openings, for instance continuous holes (9) in at least one plate (1, 2) or an interruption in the weld contour, which openings serve as medium passage opening; bending the mutually connected plates (1, 2) to the desired general shape; admitting medium under pressure via an opening into the space bounded by the contour such that at least one of the plates (1, 2) undergoes a plastic deformation whereby the contour with the plates (1, 2) bounds a channel through which can flow heat transfer medium; performing the welding operation such that the space possesses the general form of a meander; and that on the end of a non-continuous weld seam a sub-weld seam (8) in the form of a closed sub-contour is formed connecting onto this weld seam, which sub-contour has a smooth rounded form. |
