| 摘要 |
<p>A device which has a heat-resistant tube (13) in which a plasma flame (19) is generated is provided for coating the surface of objects with powdered material. The powdered coating material is introduced into the plasma flame (19) by a feed device (14), melted in the flame and deposited on the surface of an object (12). To achieve a uniform temperature distribution over the cross section of the plasma flame (19), the heat-resistant tube (13) is provided with a first (16a) and a second (16b) induction coil. The first coil (16a) is fed with a fairly high frequency in the order of magnitude of a few MHz and the second coil (16b) with a lower frequency in the order of magnitude of approximately 50 to 200 kHz. …<IMAGE>… </p> |
