JPS63176494A - Electrolytic conductive roll - Google Patents

Abstract

PURPOSE:To enhance the contact stability between a roll surface and an electrically conductive material to prevent an arc spot by forming at least a part of the conductive roll to be brought into contact with the sheet conductive material with a nonwoven sheet of conductive fibers. CONSTITUTION:The sheet conductive material is contact-guided by the conductive roll 10 provided on the inside or outside of an electrolytic cell (not shown in the figure), an electric current is applied through the roll, and the material is electrolyzed. At least a part of the conductive roll 10 to be brought into contact with the conductive material is formed with the nonwoven sheet 18 of the conductive fibers. The nonwoven sheet 18 is prepared in the form of a flange, and plural sheets are laminated on a core metal 12 and clamped by nuts 14 and 14 from both ends in the axial direction to form a roll drum 16. Besides, SUS, Al, Cu, Ni, Ti, Ta, Nb, and C respectively, their alloy, or the composite material of the elements are preferably used as the base material for the nonwoven sheet 18.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for plating or other electrolytic treatment while continuously transporting a conductive material in the form of an endless or edged sheet inside or outside an electrolytic treatment tank. The present invention relates to an energizing o-le for electrolytic treatment that contacts and guides a sheet-like conductive material.

[Conventional technology]

Various electrolytic treatments using this type of current-carrying roll are known, such as plating, electrolytic surface roughening, electrolytic etching, electrolytic coloring, satin finish, and electrolytic cleaning for iron and aluminum, for example. The energizing roll is used in various forms depending on the type of device inside or outside the electrolytic treatment tank, for example, for supplying power to a sheet-like conductive material or for static neutralization and grounding.

By the way, conventional energizing rolls for electrolytic treatment are generally made integrally of metal, and the outer circumferential surface thereof is, for example, mirror-finished (see, for example, Japanese Patent Laid-Open No. 55-85696).

However, the mirror-finished roll comes in contact with the entire surface of the endless sheet-shaped conductive material such as S)J, but it is not used for immersion in the electrolytic treatment tank or for the purpose of surface cooling outside the electrolytic treatment tank. When used while wet with an electrolytic treatment solution, the roll surface and the strip etc. become in an unstable contact state due to the action of the electrolyte interposed between them, and arc spots are likely to occur due to local current concentration when a large current is applied.

On the other hand, attempts have been made to bring stable contact between the roll and the strip by using so-called grooved rolls, roll nips, shot blast finished rolls, etc. whose roll surfaces have been processed. However, in these cases, it is easy for foreign matter to enter, which damages the roll surface, causing local current concentration in that area, which also tends to cause arc spots, which is the problem that the invention seeks to solve.] Conventional energized rolls for electrolytic treatment have a problem in that electrolytic solution and foreign matter enter between the roll surface and a sheet-like conductive material as a workpiece guided in contact with the roll surface, which tends to cause arc spots.

The present invention has been developed in view of these circumstances, and it is therefore possible to improve the contact stability between the roll surface and the sheet-like conductive material, thereby avoiding local current concentration due to the intrusion of foreign objects, etc., and preventing arcing. It can prevent spots,
Moreover, it is an object of the present invention to propose an energizing roll for electrolytic treatment that does not cause energization loss with the conductive material.

[Means and effects for solving the problems] In order to achieve the above object, the present invention provides an energizing roll for electrolytic treatment that is installed inside or outside of an electrolytic treatment tank and guides a sheet-shaped conductive material by contact. It is characterized in that at least a portion of the roll that comes into contact with the conductive material is made of a nonwoven sheet of conductive fibers.

〔Example〕

Hereinafter, preferred embodiments of the energizing roll for electrolytic treatment according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the external configuration of an embodiment according to the present invention,
FIG. 2 shows its component configuration, FIG. 3 shows its overall vertical cross-sectional configuration, and FIG. 4 shows an example of how the rolls are used.

As shown in FIG. 1, the energized roll 10 for electrolytic treatment of this embodiment includes a core metal 12, a pair of nuts 14 screwed onto the core metal 12, and a roll body sandwiched between the nuts 14. 16.

The core metal 12 is made of, for example, iron, 5LIS material, etc.
When the cloud atmosphere used is corrosive, it is coated with a polymeric material such as rubber or plastic. The material of this core metal 12 is TI.

Passivating metals such as Ta, Nb5Zr may also be applied.

The nut 14 is made of the same material as the core metal 12.

The roll cylinder 16 is constructed by laminating nonwoven sheets of metal or other conductive fibers. That is, as shown in FIG. 2, the nonwoven sheet 18 is formed into a brim shape and has a predetermined thickness. The material of the nonwoven sheet 18 is, for example, 5LISSCuSTiSTa.
It is considered to be a single substance, an alloy, or a composite material of SNbSZr, 'AI, and C.

Incidentally, a sheet formed by mixing such and such materials for the valve etc. may be used. These nonwoven sheets 18 are formed into a brim shape by punching.

As shown in FIG. 3, a plurality of nonwoven sheets 18 are laminated in the axial direction and fitted onto the core metal 12, that is, the same shaft. A roll cylinder 16 is constructed by tightening the nonwoven sheet 18 from both ends in the axial direction by a nut 14 screwed onto the core metal 12.

Note that the outer circumferential surface of the roll cylinder 16 is surface-ground by a grinder and finished into a smooth surface shape.

FIG. 4 shows an example of use of the energizing roll 10 having the above structure. That is, 5US316 was used as the material for the core bar 12. The roll cylinder 16 is made of 5US304 material with a thickness of 5mm.
The fibers were made into a 0 μm fiber, mixed with a bulb, formed into a sheet, and punched into a brim shape to form a nonwoven sheet 18 and laminated.

Then, the energizing roll 10 having such a configuration is subjected to electrolysis 120.
A sheet of conductive material (IJ tube)
A to 22! An energization test was conducted as a power supply roll for plating processing. As a result, it was found that this current-carrying roll 10 was immersed in conductivity and generated less heat, similar to the integral metal mouthpiece. Moreover, even without using nip rolls, etc., sufficient frictional force between the IJ tabs was obtained with low tension, and good results were obtained in that no arc spots were generated.

Next, another embodiment will be described. Figure 5 shows the energizing roll 10a.
Fig. 6 shows an example of the use of this energizing roll 10a.

As shown in FIG. 5, the energizing roll 10a is composed of a pair of rubber lining parts 24 and a nonwoven sheet part 26 sandwiched therebetween. In other words, the nonwoven sheet portion 26 is exposed only in a portion of the roll cylinder, and is attached to the core bar 28.

In the example shown in Fig. 6, the material of the core bar 28 is 5US3.
16 was applied. Also, the roll body is 5US304 with a thickness of 5
The 0 μm fibers were mixed with pulp to form a sheet, which was punched into a brim shape and laminated.

Then, a rubber lining was applied to only the central portion of the roll cylinder, leaving the nonwoven sheet portion 26 as a conductive portion exposed at the central portion of the roll cylinder, as shown in FIG.

Such a current supply roll tOa was placed inside the electrolytic bath 30, and a current supply test was conducted as a power supply roll for the AJ plating process to the strip 32. As a result, as in the case shown in FIG. 4, it was confirmed that high conductivity, low heat generation, and high frictional force were obtained, and no arc spots were generated.

In addition, although the above-mentioned example was applied to plating treatment, the current-carrying roll for electrolytic treatment of the present invention can be used for electrolytic roughening, etching, etc.
Of course, it can be applied to various types of processing.

〔Effect of the invention〕

As explained above, in the energizing roll for electrolytic treatment according to the present invention, by using a non-woven sheet of fibers such as metal as the body material of the energizing roll, the roll and the object to be energized become liquid. The contact state is stable even in wet conditions, preventing the occurrence of arc spots, and provides other effects such as less current flow loss and more efficient current flow.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the energizing roll for electrolytic treatment according to the present invention, Fig. 2 is a plan view showing one nonwoven sheet of the roll, and Fig. 3 is a longitudinal sectional view of the roll. , FIG. 4 is an explanatory view showing an example of use of the roll, FIG. 5 is a front view showing an embodiment of a pond, and FIG. 6 is an explanatory view showing an example of use of the roll of FIG. 10.10a...Electric roll, 12.28...
Core metal, 16.24.26... Roll cylinder, 18.
...Non-woven sheet.

Claims (3)

[Claims] (1) In an energizing roll for electrolytic treatment that is installed inside or outside the electrolytic treatment tank and guides a sheet-shaped conductive material by contact, at least a portion of the roll that comes into contact with the conductive material is made of a nonwoven sheet of conductive fibers. An energizing roll for electrolytic treatment, which is characterized by: (2) The nonwoven sheet is formed into a brim shape, and a plurality of nonwoven sheets are laminated in the axial direction and fixed to the same shaft under pressure to form a roll. Electric roll for processing. (3) The materials of the non-woven sheet are SUS, Al, Cu, Ni,
The current-carrying roll for electrolytic treatment according to claim 1, characterized in that it is a single substance, an alloy, or a composite material of Ti, Ta, Nb, and C.