Abstract: A method for decorating metallic or non-metallic surfaces treated with Physical Void Deposition, PVD, comprising: an electrochemical activation action of the decoration by means of an electrical circuit with electrodes in electrical contact and for at least one thereof with the mediation of an electrolytic solution towards a surface being treated; an electrically conductive surface facing one of said electrodes to form said surface being treated; at least one masking resistant to the electrochemical activation action of the decoration and interposed between the facing electrode and the surface being treated; and has the electrochemical action of activating the decoration of the treated surface occurs by electrochemical oxidation of the metallic oxide layer normally present on the electrically conductive surface whether it is placed below the PVD coating layer, i.e.

Abstract: An oxidation apparatus of planar metal surfaces, comprises: a tank within which the planar metal surface being treated is laid; an electrical power supply circuit with the two heads of the electrical power supply of the circuit placed in contact with electrodes with high electrical conductivity; a first planar electrode is placed below the metal surface being treated on a bottom of the aforementioned tank; an electrolyte is placed in the tank to close the electrolytic oxidation circuit; a second electrode is placed sliding and spaced on the planar metal surface under treatment in an immersed position at the level of the electrolyte in the tank; and it has the second electrode constituted by a conductive roller placed so as to roll on the planar metal surface being treated, avoiding contact between the cylindrical surface of the roller electrode and the planar metal surface being treated by means of the interposition of a permeable spacer element; the permeable spacer element is made of material resistant to t

Abstract: A machine for the electrochemical marking treatment of metallic surfaces, includes an electrode placed in sliding movement on the metallic surface to be treated, a buffer impregnated with etching solution for the specific metal in treatment, and an electric current circuit, suitable for electro-marking treatment of said metal, with a conductor connected to the electrode and the other conductor connected to the metallic surface in treatment; and presents to treat large metallic surfaces on plates, metal canvas or on metallic sheet in coil.

Abstract: A machine for the electrochemical marking treatment of metallic surfaces, includes an electrode placed in sliding movement on the metallic surface to be treated, a buffer impregnated with etching solution for the specific metal in treatment, and an electric current circuit, suitable for electro-marking treatment of said metal, with a conductor connected to the electrode and the other conductor connected to the metallic surface in treatment; and presents to treat large metallic surfaces on plates, metal canvas or on metallic sheet in coil.

Abstract: A process of chemical electro-marking includes the operation of placing the metal surface to be decorated in a position of application in which there is a silk screen, an electrode with a suitable pad soaked with etching solution, interposed between the electrode and the metal surface to be treated with the decoration, drawing or writing; and includes a phase of preliminary application of the negative shape of the decoration, drawing or writing by means of a chemical product of protection of the metal surface being treated, on the metal surface itself and resistant to the action of electrochemical etching of the marking; the action of decoration by chemical electro-marking is performed by applying the silk screen which has no masking and is resistant to the etching action of the chemical solution used, for the specific metal of the treated surface; the motion of the electrode with said pad, driven to slide on the surface of the silk screen, as known in the art, therefore, does not act mechanically on the mask

Abstract: The torch with integrated electrolytic action for the surface treatment of metals, comprises a peak-paddle (2) connected with the unipolar electric current supply (7, 16) from an external apparatus, the other pole being connected with the metal surface being treated, and has the electrolytic solution used, for the specific treatment, arranged in a tank (6, 21) connected to said torch to supply said peak-paddle through channels inside said torch; the electrolytic solution being put under pressure in the delivery direction through a dosaging device of said solution controlled by the user. Different embodiments are described with manually actuated pumps and/or rigid or flexible tanks for spraying by the user. The tank (6, 21) is advantageously made removable, to allow the replacement of the electrolytic solution and to change the type of work to be carried out on the metallic surface in a quick and clean manner.

Abstract: The torch with integrated electrolytic action for the surface treatment of metals, comprises a peak-paddle (2) connected with the unipolar electric current supply (7, 16) from an external apparatus, the other pole being connected with the metal surface being treated, and has the electrolytic solution used, for the specific treatment, arranged in a tank (6, 21) connected to said torch to supply said peak-paddle through channels inside said torch; the electrolytic solution being put under pressure in the delivery direction through a dosaging device of said solution controlled by the user. Different embodiments are described with manually actuated pumps and/or rigid or flexible tanks for spraying by the user. The tank (6, 21) is advantageously made removable, to allow the replacement of the electrolytic solution and to change the type of work to be carried out on the metallic surface in a quick and clean manner.

Abstract: The device proposed for cleaning metal surfaces consist of pad (12, 34, 91) of insulating material held between a beak-shaped (11, 52, 94) electrode (10, 26, 46) and the metal surface (8) to be cleaned, plus a low-voltage a.c. power supply (2) which is connected via the other electrode to the metal (7). A pump supplies the pad with a highly corrosive, high-density, acid solution. The pad consists of a relatively thick hose or tape. The device has slots (36) into which the gases and vapors produced during cleaning are drawn by an extractor fan (40) and then passed through a washing bottle (41) where they are cleaned. The electrode may have various shapes, and it is possible to replace the tip (28, 94, 98). The electrode is preferably designed with bores through which the acid solution can be fed.