JPH0247291A - Device for electrolyzing wire - Google Patents

Abstract

PURPOSE:To plate a metallic wire with high power efficiency without the wire being brought into contact with the inner wall of an anode by introducing a plating soln. into the cylindrical anode of specified structure, traveling the wire through a ring made of an insulating material on both ends, and applying a current. CONSTITUTION:The ceramic circular rings 2 and 2 are fixed to both ends of a cylindrical electrode 1 made of a Pb-Ag alloy, and a wire 5 to be plated is traveled through a hole provided at the center of the ring. A plating soln. is passed through the inside of the electrode 1, and a current is applied with the electrode 1 as an anode and the wire 5 as a cathode to electroplate the surface of the wire 5. In this case, (D1-D2)/2>=D3 is fulfilled, where D1 is the inner diameter of the electrode 1, D2 the inner diameter of the ring 2, and D3 the diameter of the wire 5. The length of the electrode 1 between both rings 2 and 2 is controlled to <=1m, and the length of the ring in its axial direction to 5-30mm. Consequently, the wire 5 is not brought into contact with the anode 1, and an electroplated wire free of surface detect is produced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a wire electrolytic treatment apparatus that performs electrolytic treatments such as electroplating and electrolytic cleaning on wire rods.

(Conventional technology) Conventionally, wire electrolysis treatment equipment (hereinafter referred to as wire rod electrolysis equipment)
The structure consists of a cylindrical electrolytic electrode body (hereinafter referred to as the cylindrical electrode body) whose inside becomes an electrolyte chamber, an electrolyte supply mechanism that supplies electrolyte to the electrolyte chamber, and a wire running into the electrolyte chamber. It is widely known to have a wire rod running m structure. The electrolytic treatment of the wire is carried out by supplying an electrolyte to the electrolyte chamber, running the wire through the electrolyte chamber, and applying a voltage between the cylindrical electrode body and the running wire.

In this wire electrolytic treatment, contact between the cylindrical electrode body and the wire can cause various problems, such as causing spark defects in the wire and making electrolytic treatment impossible. , it is extremely important to prevent such contact from occurring.

Such contact occurs when the straightness of the wire is poor, or when
This occurs when the tension of the wire decreases and the wire becomes slack.

On the other hand, in wire electrolytic treatment, the smaller the inner diameter of the cylindrical electrode body, the more
It has been found that the electric power for electrolysis decreases.

Therefore, recently, the inner diameter of the cylindrical electrode body has become smaller, and for example, a cylindrical electrode body with a length of 1 ms and an inner diameter of 15 mm is used. Therefore, contact between the cylindrical electrode body and the wire becomes more likely to occur.

Against this background, various measures to prevent contact between the cylindrical electrode body and the wire have been studied. As a result, a wire electrolysis device was developed as disclosed in Japanese Patent Application Laid-open No. 136698/1983. This device attempts to prevent the above-mentioned contact by pasting on the inner surface of the cylindrical electrode body an insulating coating having a large number of through holes for conducting electricity between the electrode body and the wire.

(Problems to be Solved by the Invention) However, the wire electrolysis device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 136698/1988 has the following problems in manufacturing and use. That is, the above-mentioned wire electrolyzer is manufactured by processing an insulating material such as Bakelite to provide a large number of small through holes, and then forming a thin and long cylindrical 1S with a length of 1 m and an inner diameter of 15 mm.
Since it is made by attaching it to the inner wall of the rod,
There are manufacturing problems in that processing and assembling them is extremely difficult and requires a great deal of effort.

In addition, when using the wire electrolysis device described above, since the insulating coating has many through holes, when starting to pass the wire into the inside of the cylindrical electrode body (hereinafter referred to as wire threading work),
There is a problem that the wire gets caught in the hole in the insulating coating, making it difficult to wire.
There is a problem in that dust such as sludge produced by oxidizing b-Ag tends to accumulate, resulting in poor electrical conductivity.

Further, on the inner surface of the cylindrical electrode body, electricity can be applied to the hole portion of the insulating coating, but the portion other than the hole is ineffective against electricity flow. Therefore, there is a problem that the current density in the cylindrical electrode body is higher than that in a cylindrical electrode body without an insulating coating, and therefore the voltage is higher. This problem leads to the problem of high power consumption. or,
When performing wire plating, the cylindrical electrode body is used as an anode, so the problems (increase in current density and voltage) are
This leads to the problem that the cylindrical electrode body is rapidly worn out.

The present invention has been made with attention to these circumstances, and its purpose is to solve the above-mentioned problems of the conventional ones, and to improve the contact between the cylindrical electrode body and the wire during wire electrolytic treatment. This is a wire electrolysis device that can prevent the occurrence of cylindrical damage caused by the contact prevention means. The present invention aims to provide a wire electrolysis device in which the rise in current density and voltage of the electrode body is extremely small.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a wire electrolytic treatment apparatus having the following configuration.

That is, the wire electrolytic treatment apparatus according to the first aspect includes a cylindrical electrolytic scraper whose inside becomes an electrolyte chamber, an electrolyte supply mechanism that supplies an electrolyte to the electrolyte chamber, and an electrolyte chamber. a wire running mechanism for running the wire, and rings made of an insulating material attached to the outside of both ends of the cylindrical 1tM electrode body and/or inside the cylindrical electrolytic Li body; The processing apparatus is a wire electrolysis device characterized in that the inner diameter (D) of the ring exceeds the diameter (D3) of the wire and satisfies the following formula, and the distance between the rings is within 1 m. It is a processing device.

(lh-Di) xi/2~0゜However, in the above formula, D is the inner diameter of the cylindrical electrolytic electrode body (
+++s+), 0o is the inner diameter of the ring <ms+), and D is the diameter (arm) of the wire to be electrolytically treated.

The apparatus according to the second aspect is the wire electrolytic treatment apparatus according to the first aspect, wherein the length of the ring in the axial direction of the cylindrical electrode body for electrolysis is 5 to 30 mm.

(Function) As described above, since the wire electrolyzer according to the present invention has rings made of an insulating material attached to the outside of both ends of the cylindrical electrode body and/or inside the cylindrical electrode body, Even if the wire has poor properties, the wire comes into contact with the inner circumferential surface of the ring and can travel while being supported, making it difficult to contact the cylindrical electrode body. In addition, even if the tension of the wire rod decreases during running and the wire becomes slack, the wire comes into contact with the inner peripheral surface of the ring and can run while being supported, which reduces the amount of slack in the wire. . Therefore, contact between the wire rod and the cylindrical electrode body is less likely to occur.

By the way, as mentioned above, contact between the cylindrical tti body and the wire occurs when the linearity of the wire is poor or when the tension of the wire decreases and the wire becomes slack.

Among these causes, first of all, regarding the straightness of the wire, large undulations and partially concave bends of the wire, called so-called small bends of the wire, can be considered, but it is the small bends that are the problem. . This is because the wire is normally stretched by the wire running mechanism, so large undulations are corrected, but small bends are not corrected.

The size of the recess at such a small bend is generally less than the diameter of the wire. Therefore, if the distance in the radial direction of the cylindrical electrode body from the inner surface of the cylindrical electrode body to the ring inner circumferential surface (hereinafter referred to as the height of the ring inner circumferential surface) is made larger than the wire diameter, the wire rod This makes it possible to reliably prevent contact between the wire and the cylindrical electrode body due to small bends in the wire.

Therefore, in the present invention, in order to make the height of the inner circumferential surface of the ring larger than the wire diameter, the inner diameter of the ring (port 3) is set to a value that satisfies the formula (DI-Di) XI/2, as described above. There is. In this equation, DI is the inner diameter (a
m), Dt is the inner diameter (+u+) of the ring, and D is the diameter (wm) of the wire.

In this case, since (DI Dt)XI/2 on the left side is equal to the height of the ring inner circumferential surface, the height of the ring inner circumferential surface becomes larger than the wire diameter (mouth 3). Therefore, contact between the wire and the cylindrical electrode body due to small bends in the wire can be reliably prevented.

Next, regarding the slack in the wire due to a decrease in the tension of the wire, since the slack is due to the wire's own weight when the tension due to the wire running mechanism decreases, the slack will be absorbed between the parts that support the wire (hereinafter referred to as fulcrums). The smaller the distance, the smaller the slack in the wire. We investigated the relationship between the distance between the fulcrums and the slack in the wire by operating the wire electrolytic treatment equipment, and found that when the distance between the fulcrums was within 1 m, the slack in the wire was negligible. Ta.

Therefore, in the present invention, in order to keep the distance between fulcrums within 1 m,
As mentioned above, the distance between the rings is set to within 1 m. Therefore, contact between the wire and the cylindrical i-scraper due to slack in the wire can be reliably prevented.

The reason why the inner diameter (0!) of the ring is made to exceed the diameter (Ol) of the wire is that if the Dt is less than 2, the wire cannot run.Also, the ring is made of an insulating material. The reason for this is that even if the wire comes into contact with the ring, the wire and the cylindrical electrode body are electrically insulated.

From the above, according to the present invention, it is possible to perform electrolytic treatment on the wire while reliably maintaining electrical insulation between the wire, the cylindrical N, and the electrode body.

For the above ring, if the length of the cylindrical electrode body is within 1 m,
Since the ring can be attached to the outside or inside of both ends of the cylindrical electrode body, the ring can be easily attached and replaced. length is 1
m or more, it is necessary to install them inside the cylindrical electrode body, but the number is extremely small. For example, in the case of 2 m, only one place is enough. Therefore, the wire electrolyzer according to the present invention, Compared to conventional electrodes in which an insulating film is attached to the inner surface of a cylindrical electrode body, the processing and assembly becomes easier.

In addition, as mentioned above (as the number of rings installed is extremely small, wiring work is easier, and dust such as sludge is difficult to accumulate, and even if it does, the number of parts where it accumulates is extremely small) , the conductivity can be maintained.Furthermore, since the area that is ineffective against current conduction becomes extremely small, it is possible to almost prevent the current density and voltage of the cylindrical electrode body from increasing due to the contact prevention means.

In addition, if the length of the ring is less than 51111 mm, the strength of the ring will be low and the ring will be easily damaged. If the length exceeds 30 am, the ring will be damaged due to distortion of the cylindrical electrode body caused by heat generation during energization. Since this is likely to occur, it is desirable that the length of the ring be 5 to 30 mm.

Regarding the ring made of an insulating material, the insulating material used therein can be an insulating material such as Bakelite, rubber, or synthetic resin.

Further, the shape of the ring may be a circle, an ellipse, or a polygon such as a triangle, a square, or a hexagon, and is not limited thereto, but preferably has a shape similar to the cross-sectional shape of the cylindrical electrode body.

(Example) Examples of the present invention will be described below.

1 Retirement Ship■ Figure 1 shows a side sectional view of the main part of the wire electrolyzer according to the first embodiment.The cylindrical electrode body (1) of this device is made of pb-Ag, has a length of 750J1m, It has a cylindrical shape with an inner diameter of 131. On the outside of both ends of the electrode body (1), an inner diameter of 10 mm and an outer diameter of 1
3n+m (flange part is 16fiI11), length 6I
A circular ceramic ring (2) is attached. Note that the ring (2) is screwed to the electrode body (1) and can be removed. In FIG. 1, (3) is an electrolytic solution chamber, (4) is a support member for the electrode body (1), and (5) is a wire rod. Moreover, a wire running mechanism (not shown) whose main part is a wire running roll is attached to both ends of the support member.

Using the above device, the outer diameter is 1+uw, ! ! E amount 500K
The wire rod (5) of g was electroplated. In this electroplating process, an electrolytic solution having a temperature of 50°C and a composition of Zn5Oa and 711J (400g/j!) is circulated and supplied to the electrolytic solution chamber (3), and the wire rod (
5) at a speed of 60 m/min.
) was used as a cathode, and electrode body (1) was used as an anode. In addition, the current density for the wire (5) is 20OA/da! I made it. As a result, the electroplating process was able to be performed without causing any problems such as the impossibility of plating the wire (5). Furthermore, no spark defects were observed in the electroplated wire (5). This means that the electrode body (1) and the wire (5) do not come into contact with each other.
Indicates that it has been electroplated.

FIG. 2 shows a side sectional view of the main part of the wire electrolysis device according to the second embodiment of the invention.The cylindrical electrode body of this device has a length of 750II11.
, Pb-Ag cylinders (6) and (7) with an inner diameter of 20 m + w.
) is screwed at the flange. Electrode body (6
)(7) has an inner diameter of 13mm+ and an outer diameter of 19I on the outside of both ends.
II11, 9mm long ceramic circular ring (
8) is installed. Note that this ring (8) is screwed to the electrode body (61 (7)).

In addition, the length 9 sn, inner diameter 13 mm, outer diameter 19.511 Jm is also placed in the longitudinal center of the inside of the electrode body (6) (7).
A circular ceramic ring (9) is attached. As shown in FIG. 2, this ring (9) has a flange, and the flange portion is inserted into the flange portions of the cylindrical bodies (6) and (7). Note that a rubber sealing material is used between these flanges.

Using the above-described apparatus, a wire rod (5) having an outer diameter of 1 mm and a weight of 500 kg was subjected to electroplating under the same electroplating conditions as in the first example.

As a result, the electroplating process could be performed on the wire (5) without causing problems such as soot, which would make electrolytic treatment impossible. Furthermore, no spark defects were observed in the electroplated wire (5).

After the electroplating process, the ring (9) is attached to the electrode body (6) (7).
) and inspected it. Only evidence of contact with the wire rod (5) was observed on the inner peripheral surface of the ring (9), and no abnormality such as damage was observed.

After the above inspection, the ring (9) was mounted inside the electrode bodies (6) and (7) again, and electroplating was performed using the wire rod (5) having an outer diameter of 1 cm as the material to be treated.

To remove the ring (9), remove the screws on the flanges of the cylindrical bodies (6) and (7), separate the cylindrical bodies (6) and cylindrical bodies (7), then remove the cylindrical body (6). Kara ring (9
) was removed. This removal work was extremely easy. In addition, when installing the ring (9), the ring (9) is attached to the ring (9).
This installation process was also extremely easy, as it was done in the reverse order of removal in step 9).

] Yu Huangsei ■ Fig. 3 shows a side sectional view of the main part of the wire electrolyzer according to the third embodiment. The cylindrical electrode body 00 of this device has a length of 750 nn.
, 2 Pb-Ag cylinders with an inner diameter of 15 m+s aa 0
51 are welded together. Electrode body (6) (7)
Inner diameter 10ffi-1 outer diameter 15m inside near both ends of
+*, a ceramic circular ring 00 with a length of 30II11 is inserted (press-fitted) and attached.

In addition, the inner diameter of 1
A ceramic circular ring (+2) with a diameter of 0 mm and an outer diameter of 15 m+* is inserted and attached.

Using the above-described apparatus, a wire rod (5) having an outer diameter of 1++ ua and a weight of 500 kg was subjected to electroplating under the same electroplating conditions as in the first example.

As a result, the electroplating process could be performed on the wire 03) without causing any problems such as the inability to electrolytically process the wire rod 03). Furthermore, no spark defects were observed in the electroplated wire 03).

The ring (9) is installed by inserting the ring (11) into one end of the cylindrical body 04, half-inserting the ring surface into the other end, and then inserting the cylindrical body 051 into the ring 02). After the cylindrical body α4 and the cylindrical body aω were butted together, the outer periphery of the joined portion was welded. Since this work involved welding, the workability was a little worse than in the case of attaching the ring (9) in the second embodiment. However, compared to the conventional method of attaching an insulating film to the inner surface of the electrode body, the workability was extremely excellent.

After the electroplating process, the welded part of the cylindrical body is cut and removed, the cylindrical body side and the cylindrical body 051 are separated, and the ring (
When I attempted to remove item 9), I found that the workability was second to none.
Compared to the case of the example, it was worse, but the conventional tlA
The workability was excellent compared to the case of removing the marginally ruptured membrane.

(Effects of the Invention) The wire electrolytic treatment device of the present invention can reliably prevent contact between the cylindrical electric M electrode body and the wire during the wire electrolytic treatment, facilitate wire wiring work, and maintain electrical conductivity. Furthermore, increases in current density and voltage in the cylindrical electrode body due to the contact prevention means can be made extremely small. Furthermore, the processing and assembly of the device can be made relatively easy.

[Brief explanation of the drawing]

FIG. 1 is a sectional side view of the main part of the wire electrolyzer according to the first embodiment, FIG. 2 is a sectional side view of the main part of the wire electrolyzer according to the second embodiment, and FIG. 3 is a sectional side view of the main part of the wire electrolyzer according to the second embodiment. FIG. 2 is a sectional side view of a main part of the wire electrolysis device. (+) QO) - Cylindrical M, scraping body (2) (8) (9) (1
1) 01-IJ link (3) --- One electrolyte chamber (4)
-----11 pole body support (5)---Single wire material
(6) (7) 04) Oω-Cylinder body patent applicant Kobe Steel Co., Ltd. Agent Patent attorney Akira Kanemaru

Claims (2)

[Claims] (1) A cylindrical electrolysis electrode body whose inside becomes an electrolyte chamber,
an electrolytic solution supply mechanism that supplies an electrolytic solution to an electrolytic solution chamber; a wire running mechanism that causes a wire to run into an electrolytic solution chamber; and the outside of both ends of the cylindrical electrode body for electrolysis and/or the inside of the cylindrical electrode body for electrolysis. A wire electrolytic treatment apparatus having a ring made of an insulating material attached to the inner diameter (D_2) of the ring.
is a value that exceeds the diameter (D_3) of the wire and satisfies the following formula, and the distance between the rings is within 1 m. (D_1-D_2)×1/2≧D_3 However, in the above formula, D_1 is the inner diameter (mm) of the cylindrical electrode body for electrolysis, D_2 is the inner diameter of the ring (mm), and D_3 is the diameter ( mm). (2) The wire electrolytic treatment apparatus according to claim 1, wherein the length of the ring in the axial direction of the cylindrical electrode body for electrolysis is 5 to 30 mm.