| 摘要 |
<p>The laser head includes a system for directing a focussed laser beam into a melting zone, a powder delivery system with a channel in which powder granules are accelerated by an accelerating gas, and a protection gas delivery system with a hood (52) surrounding the exit opening of the powder delivery channel. The hood incorporates a flow homogenising element (68) which, with reference to the flow direction (69) of the protection gas, is located downstream from the gas entry opening (66) and upstream from the exit opening (28) of the powder delivery channel (26). Also claimed is a method for laser treatment, in particular laser welding.</p> |
| 申请人 |
DEUTSCHE FORSCHUNGSANSTALT FUER LUFT- UND RAUMFAHRT EV, 53175 BONN, DE |
发明人 |
OPOWER, HANS, PROF. DR.RER.NAT., 82152 KRAILLING, DE;VOLZ, ROBERT, DIPL.-ING., 70563 STUTTGART, DE;WEYER, HEINRICH, PROF. DR.-ING., 53819 NEUNKIRCHEN, DE |
