JPH0762599A - Electrolytic device of conductive plate material - Google Patents

Abstract

PURPOSE:To reduce the running cost and to miniaturize a cooler by decreasing the voltage drop, to prevent the damage of the conductive plate material by obviating sparking and further to prevent the damage of the material by obviating the slip of the material and a power feeder roller. CONSTITUTION:The centerline mean roughness of the surface of a power feeder roller 20 used in the electrolytic device 10 of a conductive plate material is controlled to about 0.1 to 0.8mum to keep the roller 20 at optimum surface roughness. Accordingly, the voltage drop is decreased when a web 22 is energized through the roller 20, when the web 22 is energized through the roller 22 and an electrode 24 opposed to the web 22 is simultaneously energized to electrolyze the web 22 surface. Besides, the local concentration of current is reduced to prevent sparking, and the generation of heat is decreased as the voltage drop decreases. Further, the slip of the web 22 and roller 20 is obviated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for electrolytically treating a conductive plate-like material, and more particularly, a belt-like conductive plate-like material is passed through while being dipped in an electrolytic solution. The present invention relates to an electrolytic treatment device for a conductive plate material that is subjected to electrolytic treatment.

[0002]

2. Description of the Related Art As an electrolytic treatment apparatus for electrolytically treating the surface of a conductive plate material formed in a strip shape of aluminum, iron or the like, for example, in a state where the conductive plate material is passed straight in the vertical direction, Electricity is applied in the longitudinal direction of the conductive plate-like material through the power supply roller, and at the same time, current is applied to the electrode disposed at a position facing the conductive plate-like material in the electrolytic solution to remove the surface of the conductive plate-like material. Some are electrolytically processed.

Further, in Japanese Patent Publication No. 4-53958, electrolysis in which a valve metal is provided on the surface of a current-carrying rotary drum and the valve metal is anodized to form a film having no conductivity in the anode direction. A processing device is disclosed. That is, this coating film has the property of being in a non-conductive state with respect to the electrolytic treatment liquid and being in a conductive state with respect to the conductive plate-like material in direct surface contact. Therefore, when the rotary drum for energization is immersed in the electrolytic treatment liquid, it is possible to prevent corrosion of the rotary drum from being caused by the electrolytic treatment liquid. Therefore, the conductive plate material is wound around the rotary drum immersed in the electrolytic treatment liquid. In this state, it is possible to energize the conductive plate-shaped material through the rotating drum and simultaneously to supply an electric current to the electrodes arranged to face the rotating drum to electrolyze the surface of the conductive plate-shaped material.

[0004]

However, conventionally, the surface roughness of the power feeding roller is not accurately regulated because the surface roughness of the power feeding roller and the performance of the power feeding roller are unclear. It was Therefore, for example, if the surface roughness of the power feeding roller is too rough, there is a problem in that the amount of voltage drop at the time of energizing the conductive plate-shaped material from the power feeding roller becomes large and running costs cannot be reduced. Further, since the amount of voltage drop is large, there is a problem that the conductive plate-like material is damaged due to local concentration of current and generation of sparks. Further, since the amount of heat generation increases due to the increase in the amount of voltage drop, there is a problem that the cooling device becomes large. on the other hand,
If the surface roughness of the power feeding roller is too precise, there is a problem that the conductive plate material slips on the surface of the power feeding roller.

The present invention has been made in view of the above circumstances, and it is possible to reduce the running cost, prevent damage to the conductive plate member, and reduce the size of the cooling device.
It is an object of the present invention to provide an electrolysis treatment apparatus for a conductive plate-shaped material, which can prevent slipping between the conductive plate-shaped material and the power feeding roller.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a power feeding roller in which a conductive plate-like material stretched on the surface of the power feeding roller is immersed in an electrolytic solution. Conductive plate shape for conducting electrolysis on the surface of the conductive plate material by energizing the conductive plate material through the electrodes and energizing the electrode disposed at a position facing the conductive plate material in the electrolytic solution. In the electrolytic treatment apparatus for material, the center line average roughness of the surface of the power feeding roller is set to about 0.1 to 0.8 μm.

[0007]

According to the present invention, the center line average roughness of the surface of the power feeding roller used in the electrolytic treatment apparatus for the conductive plate-like material is set to about 0.1 to 0.8 μm, and the surface roughness of the power feeding roller is set. Was set not to be too coarse and not too precise. Therefore,
When conducting the electrolysis treatment on the surface of the conductive plate-like material by energizing the conductive plate-like material through the power feeding roller and energizing the electrode arranged at the position facing the conductive plate-like material in the electrolytic solution To
The amount of voltage drop at the time of energizing the conductive plate member from the power feeding roller, which is caused by the surface roughness of the power feeding roller being too rough, is reduced. Further, the local current concentration is reduced to prevent the occurrence of sparks and the voltage drop amount is reduced, so that the heat generation amount is reduced. Further, it is possible to prevent the occurrence of slip between the conductive plate member and the power feeding roller, which is caused by the surface roughness of the power feeding roller being too precise.

Hereinafter, the electrolytic treatment apparatus for a conductive plate material according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows a sectional view of an electrolysis treatment apparatus 10 for a conductive plate material according to the present invention. The electrolysis treatment device 10 for a conductive plate-shaped material has an anodization treatment tank 12, and an electrolytic solution 14 is supplied to the anodization treatment tank 12. A front roller 16 is rotatably supported in the electrolytic solution 14 on the left side of the anodizing tank 12, and a rear roller 18 is rotatably supported in the electrolytic solution 14 on the right side of the anodizing tank 12. Has been done.

A power feeding roller 20 is disposed above the front roller 16 on the left side, and the power feeding roller 20 is rotatably supported via a roller shaft 20A. The center line average roughness Ra of the surface of the power feeding roller is about 0.1 to 10 so that the surface roughness of the power feeding roller 20 is neither too rough nor too precise.
It is set to 0.8 μm. Therefore, the problem that occurred when the center line average roughness Ra of the surface of the power feeding roller was about 0.8 μm or more was too rough, and the center line average roughness Ra of the surface of the power feeding roller was about 0.1 μm or less and too precise. It is possible to solve the problem that occurred during the state.

A strip-shaped conductive plate-like material (hereinafter referred to as a web) 22 is stretched and is in contact with the upper half of the power feeding roller 20. The web 22 contacting the power feeding roller 20 is stretched between the lower portion of the front roller 16 and the lower portion of the rear roller 18. Then, the web 22 stretched between the lower portion of the front roller 16 and the lower portion of the rear roller 18 is immersed substantially horizontally in the electrolytic solution 14. In this case, the web 22 is the feeding roller 20.
The web 22 supplied into the electrolytic solution 14 via the front roller 16 and immersed in the electrolytic solution 14 is pulled up from the electrolytic solution 14 via the rear roller 18.

Electrolyte solution 1 between front roller 16 and rear roller 18
Electrode 24 is provided in the lower part of front roller 16 and rear roller 1
It is arranged substantially in parallel with the web 22 stretched over the lower part of 8. The cathode of the power supply 26 is electrically connected to the electrode 24, and the anode of the power supply 26 is electrically connected to the roller shaft 20A of the power feeding roller 20. Therefore, when the power supply 26 is turned on, a negative voltage is applied to the electrode 24 and a positive voltage is applied to the web 22 via the roller shaft 20A and the power feeding roller 20.

The operation of the electrolysis apparatus for electroconductive plate-like material according to the present invention, which is constructed as described above, will be described. First,
The web 22 is supplied into the electrolytic solution 14 via the power feeding roller 20 and the front roller 16, and the web 22 stretched between the lower portion of the front roller 16 and the lower portion of the rear roller 18 is immersed in the electrolytic solution 14. Next, set the power supply 26 to the “on” state,
The web 22 is provided via the roller shaft 20A and the power feeding roller 20.
Apply a positive voltage to. In this case, the center line average roughness Ra of the surface of the power feeding roller is set to about 0.1 to 0.8 μm so that the surface roughness of the power feeding roller 20 is neither too rough nor too precise. Therefore, the centerline average roughness Ra is about 0.
There was a problem that the voltage drop amount when energizing the conductive plate material from the power feeding roller was large, which occurred when it was in an excessively rough condition of 8 μm or more, and the current amount was locally concentrated due to the large voltage drop amount. It is possible to solve the problem that a spark is generated and the problem that the amount of heat generated by the increase in the amount of voltage drop is large and the cooling device is large. Further, it is possible to solve the problem that the conductive plate-like material and the power feeding roller slip, which occurs when the center line average roughness Ra of the surface of the power feeding roller is about 0.1 μm or less and is too precise.

Then, the web 2 is fed through the feeding roller 20.
Since a negative voltage is applied to the electrode 24 at the same time that a positive voltage is applied to the electrode 2, a current flows from the web 22 arranged facing the electrode 24 to the electrode 24 to continuously electrolyze the surface of the web 22. It is processed (anodized). The web 22 having the surface subjected to the electrolytic treatment is passed through the rear roller 18 and the electrolytic solution 14
Pulled up from within.

[0014]

EXAMPLES Next, the center line average roughness Ra of the surface was 0.05, 0.
07, 0.1, 0.15, 0.2, 0.3, 0.35, 0.4, 0.5, 0.5
The results of investigation of the voltage drop amount and the occurrence rate of sparks when the surface of the web 22 was electrolytically treated with the respective feed rollers 20 finished to 5, 0.7, 0.8, 0.9, 1.0, 1.2 and 1.5 μm, A description will be given based on the table below. still,
The web 22 is an aluminum web having a thickness of 0.2 mm and a width of 500 mm, and the amount of power supplied to the power supply roller 20 is 2500 A.
And Further, 170 g / l of sulfuric acid at 30 degrees was supplied as the electrolyte solution 14 into the anodizing treatment tank 12. As shown in the table, when the center line average roughness Ra of the surface of the power feeding roller 20 is 0.8 μm or less, the amount of voltage drop is as small as 0.16 V or less, and the spark generation rate is suppressed to zero. On the other hand, when the center line average roughness Ra of the surface of the power feeding roller 20 is 0.9 μm or more, the voltage drop amount is 0.30 V.
It becomes larger than the above, and sparks occur more than 20%. Although the slip between the conductive plate member and the power feeding roller was not specifically investigated, the applicant of the present invention found that the center line average roughness Ra of the surface of the power feeding roller 20 was 0.1.
It is empirically required that the web 22 and the power feeding roller 20 slip when the thickness is less than μm.

In the above-described embodiment, when a positive voltage and a negative voltage are applied to the web 22 stretched between the front roller 16 and the rear roller 18 and the electrode 24 arranged to face the web 22, respectively. However, not limited to this,
As described in the section of the prior art, the power feeding roller for the electrolysis treatment device of the conductive plate-shaped material according to the present invention, the web contacted with the surface of the power feeding roller is immersed in the electrolyte together with the power feeding roller, The present invention can be applied to an electrolytic treatment apparatus in which a voltage is applied to a web dipped in the inside of the web and an electrode arranged to face the web to electrolytically treat the web.

Further, in the above-mentioned embodiment, the power feeding roller used in the electrolytic treatment apparatus for the conductive plate-like material for anodizing the conductive plate-like material has been described, but the present invention is not limited to this, and the conductive plate-like material is not limited thereto. The power supply roller used in the electrolytic treatment apparatus may be used as a power supply roller for continuous plating, a power supply roller for electrolytic etching, or the like.

[0017]

As described above, according to the electroconductive plate-shaped electrolytic treatment apparatus of the present invention, the electroconductive plate-shaped material is energized through the feeding roller and the electroconductive plate-shaped material in the electrolytic solution is used. When the surface of the conductive plate-like material is subjected to electrolytic treatment by energizing the electrode arranged at the position facing the The amount of voltage drop when energized is reduced. In addition, local current concentration is reduced to prevent sparks from occurring, the amount of voltage drop is reduced, and the amount of heat generation is also reduced. Further, it is possible to prevent the occurrence of slip between the conductive plate member and the power feeding roller, which is caused by the surface roughness of the power feeding roller being too precise.

As described above, the running cost can be reduced by reducing the amount of voltage drop, and the occurrence of sparks can be prevented, so that the conductive plate member can be prevented from being damaged and the cooling device can be downsized. it can. Furthermore, since slippage between the conductive plate member and the power feeding roller can be prevented, work efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an overall schematic diagram of an electrolytic treatment apparatus for a conductive plate-like material according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Electrolytic treatment device for conductive plate-like material 14 ... Electrolyte solution 20 ... Power supply roller 22 ... Web (conductive plate-like material) 24 ... Electrode

Claims (1)

[Claims] 1. A conductive plate-shaped material stretched on the surface of a power feeding roller is immersed in an electrolytic solution to energize the conductive plate-shaped material via the power feeding roller and to conduct electricity in the electrolytic solution. In an electrolytic treatment device for a conductive plate material, which energizes an electrode arranged at a position facing the conductive plate material to electrolytically process the surface of the conductive plate material, the center line average of the surface of the power feeding roller Roughness about 0.1-0.8
An electrolytic treatment device for a conductive plate-shaped material, which is set to μm.