| 摘要 |
A process of electrochemical marking comprises the step of placing a metal surface (1) to be decorated in a position next to a silk screen and an electrode (4) with a suitable pad soaked with etching solution interposed between the electrode and the metal surface to be treated. It includes a phase of preliminary application of the negative shape of the decoration, drawing or writing by means of a mask on the metal surface; the action of decoration by electrochemical marking is performed while applying the silk screen (3) which has no masking (2, 12) and is resistant to the etching action of the chemical solution used. The motion of the electrode (4, 14) with said pad sliding on the surface of the silk screen (3), therefore, does not act mechanically on the masking (2, 12) damaging it, but only acts by the electrochemical action of marking in the zone momentarily affected by the electrode and not protected by said masking; after completing the marking of the metal surface, the screen (3) is removed and the metal surface (1) is cleaned of the masking (2, 12). |
