| 摘要 |
<p>The invention relates to an orbital welding device for mobile use in order t o join a first pipe end (1) and a second pipe end (2) along a circumferential joint (3) by means of at least one weld seam (4), particularly for producing a pipeline (5) to be placed on land. The inventive device comprises a guide ri ng (6), which can be oriented toward the first pipe end (1) and the circumferential joint (3), and an orbital carriage (7) that can be motor- displaced along the guide ring (6) via an advancing device (8). On the orbit al carriage (7), a laser welding head (12) for directing a laser beam (10) into a laser welding zone (13) is mounted in a manner that enables it to be oriente d toward the circumferential joint (3) whereby enabling the production of the weld seam (4) along the circumferential joint (3) by displacing the orbital carriage (7). The laser beam (10) is produced by a high-power fiber laser be am source (9) located, in particular, on a mobile transport vehicle (35) while being situated at a distance from the orbital carriage (7), is guided by lig ht guide (11) passing though a tube bundle (50) to the orbital carriage (7) and then supplied to the welding head (12). A significant advantage of the invention resides in the fact that the joining of two pipe ends by means of only one single welding process during a short period of time is made possib le in the field with autonomous operation.</p> |
