RU2100490C1 - Gear foe deposition of electroplating on strip material - Google Patents

Abstract

FIELD: electroplating. SUBSTANCE: gear incorporates D.C. source, bath where anode and drum mounted for rotation are placed. Outer metal part of drum has depressions, it is manufactured in the form of separable shell with formation of pocket in drum. Depressions may be through ones. EFFECT: simplified design, improved operational characteristics. 3 cl, 4 dwg

Description

 The invention relates to galvanic production, in particular to the design of devices for applying a metal coating on a strip material.

 A device for applying a metal coating on a dielectric material, including a bath for a chemical solution (ed. St. USSR N 681137, class C 25 D 7/06, 1978). The device provides the ability to apply a local metal coating on the fabric. However, its performance is insufficient, since the coating is applied to small sections of fabric along the length.

 A device is known for applying a plating material to a strip material on a metal base containing a direct current source, a bath with an anode mounted therein connected to a direct current source, and a drum mounted for rotation (ed. St. USSR N 850757, class C 25 D 7/06, 1981). The drum of the known device is gummed.

 However, the known device does not provide the possibility of applying metal coatings on materials with a large initial electrical resistance (activated fabric, paper, polymer film and the like, since in the zone of contact of the material with the cathode located above the bath, strong heating occurs, which can lead to burnout material.

 The problem to which the invention is directed is the creation of a device that provides the possibility of applying a different thickness of the metal coating on the source material with a large initial electrical resistance. This group of materials includes pre-processed fabrics, non-woven fabric, perforated paper and film.

 This is achieved by the fact that in the device for applying a galvanic coating to a strip material containing a direct current source, a bath with an anode and a drum mounted therein mounted for rotation, the peripheral cylindrical part of the latter is made of metal, with recesses on its outer side, and is connected with said DC source. The peripheral cylindrical part of the drum can be made in the form of a shell, and the recesses are made through. The shell can be made removable. The drum may be made with an internal cavity.

 The design of the device provides materials with various technical properties that shield electromagnetic radiation in a wide frequency range, absorbing materials with different surface electrical resistance and thermal conductivity, materials with the necessary decorative qualities. The metal coating can be applied to textile material made from natural and artificial fibers, non-woven fabric, paper, polymer film and metal strip material, while the thickness of the metal coating on different sides of the fabric is different from each other, which ensures the anisatropy of the resulting material, for example, various thermal characteristics from different sides of the strip.

 In FIG. 1 shows the proposed device, a General view; figure 2 - drum; figure 3 and 4 embodiments of the shell.

 A device for plating a strip material 1 includes a direct current source 2, a bath 3, in which an anode 4 and a drum 5 mounted for rotation are installed.

 The peripheral cylindrical part 6 of the drum 5 is made of metal with recesses 7 and is connected with the negative pole of the DC source 2, and the anode 4, respectively, with the positive pole through the current leads 8.

 Part 6 can be preferably made in the form of a removable shell 9 with the formation of a cavity 10 in the drum 5. In this case, the recesses 7 can be made through, of various sizes and configurations, for example in the form of round (Fig. 3) or square (Fig. 4) and etc. holes 11. Depending on the required technical (reflecting, absorbing characteristics, electrical conductivity) and decorative properties of the obtained material, a shell 9 with an appropriate configuration and density pattern of the recesses is selected. In addition, the implementation of the shell 9 removable provides increased productivity, since there is no need to replace the drum and clean it from the deposited metal. Guide rollers 12 provide tension and direction of the strip material 1, the movement of which is carried out by means of a drive (not shown).

 The device operates as follows.

 The strip material 1, previously prepared for galvanic treatment, is fed onto the rollers 12 and is carried out between the anode and the drum 5. The bath is filled with electrolyte, the material moving drive and the direct current source are turned on.

 The electrolyte entering through the openings 11 into the cavity 10 of the rotating drum 5 is intensively sparged, improving the evacuation of the gases accompanying the cathode and anode processes, providing an increase in the quality of the coating and the efficiency of the device.

 By changing the speed of broaching strip material, electrical parameters, a change in the total thickness of the coating is achieved.

 Thus, the proposed device allows to obtain materials with a wide range of technical properties, various electrical conductivity, reflection coefficients of electromagnetic radiation, absorption and thermal conductivity, and the like.

Claims (4)

 1. A device for applying a plating to a strip material containing a direct current source and a bath with an anode installed in it and rotatable with a cylindrical drum, characterized in that the outer side of the drum is made of metal with recesses on its outer surface and is connected to a direct current source .  2. The device according to claim 1, characterized in that the outer side of the drum is made in the form of a shell, and the recesses are formed through holes in the shell.  3. The device according to claim 1, characterized in that the shell is removable.  4. The device according to any one of claims 1 to 4, characterized in that the drum is hollow.

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