| 摘要 |
<p>A device for the thermal spraying of build-up welding materials having components for feeding the working materials consisting of the operating gases and the build-up welding materials to a cooled focussing jet in communication with a combustion chamber. The focussing jet is provided on its in-feed side with an adapter which surrounds the combustion chamber. Opposite its opening into the focussing jet the combustion chamber is closed off by means of a combustion jet provided with differential pressure, or a nozzle holder, axially adjustable with respect to the adapter. In the wall of the adapter there is affixed transversely to the direction of flow, or transversely to the adapter's longitudinal axis, an adjustable ignition electrode. A combustion gas feed regulator and oxygen or compressed air regulator and the on-switch for the ignition of the electrode, are linked together in such a way that air scavenging of the focussing jet, the switching-on of the electrode ignition current and the introduction of the combustion gas are effected in succession.</p> |
