| 摘要 |
<p>The invention concerns the field of microplasma-electrochemical processing of the surface of metallic objects, and especially the methods and devices for microplasma oxidation of valve metals and their alloys. The invention can be applied in areas like mechanical engineering, aircraft construction, in the petrochemical and oil industry and many other branches of industry. The main features of the invention: the component is immersed into the electrolyte with a specific speed and an initial polarizing current intensity is applied, which is high enough to generate on the surface of the treated component, which is immersed in the electrolyte, moving microplasma discharges. The component is held until the formation of a coating of a specific thickness. Hereby, the lowering phase of the voltage, at which a coating is forming, is done by lowering the voltage to a value which corresponds with the beginning of the extinction of the microplasma discharges and then maintaining it until the complete extinction of the isolated wandering microplasma discharges. Then the component is taken out of the electrolyte and is cooled. The method is realized with a device, containing a tank with a cooling agent, in which the electrolytic bath is located, a control block and a mechanism to vertically and horizontally move the treated component with the possibility to move with this mechanism the given component out of the electrolytic bath in the tank with the cooling agent.</p> |
