| 摘要 |
<p>Installations of this type generally comprise an electron-beam generator connected to a chamber for receiving the workpieces to be welded in which a vacuum can be created by a vacuum pump. According to the invention, the vacuum chamber comprises a first workpiece chamber (5) of small volume and a second workpiece chamber (15) of substantially greater volume. The two chambers are connected by a slide valve (10) in region of the path of the beam (I) generated by the electron-beam generator (2). The ratio of the volume of the two workpiece chambers (5, 15) lies preferably between 5 and 1,000, for example at approximately 100.</p> |
