| 摘要 |
Method for the weld-overlaying of cylindrical workpieces (11) using a laser (13), in which, after facing the surface to be overlayed, the workpiece (11) is rotated about its axis, a laser beam (14) is emitted and partially focused onto the surface of the workpiece (11), and a pre-alloyed powder, having the composition of the alloy to be deposited, is sprayed in the interaction zone (15) between the beam (14) and the workpiece (11). Passes along non-touching generatrices of the rod are carried out, in passes along non-touching helices until the surface of the workpiece (11) is completely covered. Reconstitution of worn surface without appreciable distortion of the workpiece, in particular for steam-turbine control rods. <IMAGE> |
