| 摘要 |
It consists in: - boring a tube 1; - drilling radial holes 1b in the tube; - producing the nozzle 2 by standard machining; - placing this nozzle in the bore 1a of the tube, the ends of its fins (blades) 2a being opposite radial holes 1b; - welding (soldering) the ends of the fins (blades) and the tube 1 by filling the holes 1b of the latter with weld material (solder); - grinding the outside of the tube 1 in the region of the welds (soldered joints). <IMAGE>
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