| 摘要 |
Method of coating products, such as workpieces, in particular made from valve metals and their alloys, by micro-arc oxidation or electrophoresis in the presence of at least one additive incorporated in an alkaline solution, characterised in that before applying the coating, a nozzle element is mounted at a distance of 5-15 mm from the zone of the surface of the workpiece to be processed, the nozzle cross section being selected depending on the geometry of the part of the workpiece surface to be processed, and, when the alkaline solution is delivered through the nozzle element, an electric circuit is established cathode to anode by the uninterrupted and forcibly and selectively directed and/or automatically ejected jet of solution in order to avoid additional cooling of the workpiece and to ensure that the coating is fused through its entire depth, and the powdered components or the ultra-dispersion powder needed for the chemical composition may be used as additives.
|
