JP2844148B2 - Rust prevention method and rust prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for performing a rust-preventive treatment on a copper single wire, a stranded wire or the like, and more particularly, a thick rust-preventive film can be formed on the surface of the stranded wire and between the strands. The present invention relates to a rust prevention treatment method and a rust prevention treatment device.

[0002]

2. Description of the Related Art In order to maintain a specified service life, a conductor of an electric wire used for a transmission line is subjected to a rust preventive treatment. Examples of the rust preventive liquid include rust preventives such as BTA (benzotriazole) such as 1.1.1 trichloroethane, IPA (isoprobanol), MEK (M
(ethyl ethyl Ketone), Metha
What is dissolved in a mixed solvent such as nol is used. Conventionally, the following method has been used as a rust prevention treatment method using this rust prevention solution. Thirdly, a method of applying a rust preventive liquid by immersing and passing a conductor into a liquid tank filled with a rust preventive liquid is used.

[0003]

However, in the above-mentioned conventional method, there is no non-uniformity of the rust-preventive film on the conductor surface because it is immersed in the pre-rust-prevention liquid tank. ,
A thick anticorrosive film cannot be formed on the surface of a single wire, and in the case of a stranded wire, the finish of the strand surface is not uniform. There is a problem that the rust preventive liquid does not permeate between the wires, and a thick rust preventive film cannot be formed.

An object of the present invention is to provide a rust prevention treatment method and a rust prevention treatment device capable of forming a rust prevention coating uniformly and thickly between the surface of the stranded wire and the strand.

[0005]

Means for Solving the Problems The present inventor paid attention to the fact that a sufficient rust-preventive film was not formed even though the conductor surface was immersed and passed through the rust-preventive solution and the conductor surface was sufficiently immersed in the rust-preventive solution. did.

First, the process of forming a rust-preventive film on a copper surface is clarified. As a result, benzotriazole (C ₆ H ₄₎
N ₂ · NH) solution It has been clarified that benzotriazole turns into cupric benzotriazole (corrosion-resistant coating) in the presence of oxygen (O ₂ ). However, in the conventional rust preventive treatment, in order to prevent a place where the rust preventive liquid does not adhere to the surface of the conductor passing through the vehicle, the rust preventive treatment is caused to run through a deep position in the tank filled with the rust preventive liquid.

The inventor of the present invention has found that in such a conventional rust preventive treatment method, oxygen (O ₂ ) required when the rust preventive liquid reacts with copper to form a rust preventive film is insufficient. This led to the present invention.

[0008] The surface of the strand constituting the stranded wire is
When the finish is not uniform and finished as a stranded wire, the rust preventive liquid does not immerse between the wires due to the surface tension between the wires even when immersed in the rust preventive solution, In the case of a stranded wire, it has been found that a rust-preventing effect has not been particularly obtained, and the present invention has been accomplished.

In order to achieve the above object, a rust-prevention treatment method according to the present invention is directed to a single wire formed into a desired wire diameter by a wire drawing machine or a stranded wire formed by twisting two or more strands by a stranded wire machine. The rust preventive liquid in the rust preventive tank is irradiated with infrared rays from any direction when the single wire or the stranded wire is subjected to rust preventive treatment by immersion traveling in a rust preventive tank filled with a benzotriazole solution. It is.

[0010] In order to achieve the above object, a rust prevention treatment apparatus according to the present invention comprises a single wire formed into a desired wire diameter by a wire drawing machine or a twisted wire formed by twisting two or more strands by a twisting machine. An infrared generator is installed on the inner wall of the rust prevention tank of the rust prevention treatment device that immerses the wire in the rust prevention tank filled with the benzotriazole solution and performs rust prevention treatment on the single wire or the stranded wire. The rust preventive liquid inside is irradiated with infrared rays.

[0011]

A single wire or a stranded wire is immersed at a speed of several hundred to several thousand m / hr under a rust preventive liquid filled in a rust preventive tank. The rust prevention liquid in the rust prevention tank in which the single wire or the stranded wire travels resonates with the irradiated infrared rays and absorbs the infrared rays. I by the absorption of the infrared, Bosabieki increases the energy level, the vibration of the stretching vibration and the angle of intersection vibration larger, molecular motion becomes active.

The activation of the molecular movement of the rust preventive liquid causes a large pressure and a high temperature in the rust preventive liquid in the rust preventive tank, so that the single or stranded wire Cu and benzotriazole (C ₆ H ₄ N _2. N
H) and promotes the formation of cupric benzotriazole (corrosion-resistant coating) on the surface of a single wire or a stranded wire.

[0013]

Embodiments of the present invention will be described below. The apparatus for manufacturing a stranded wire has a configuration as shown in FIG. In other words, the copper wire 600 pulled out of the furnace is shown in FIG.
As shown in (A), the wire is drawn out in the direction shown by arrow A, drawn to a desired wire diameter by a wire drawing machine 100, pulled by an ascending pot 300, and wound around a winding drum 500 through a rust prevention tank 400. The line after the drawing is shown in FIG.
After being twisted by the twisting machine 200 as shown in FIG.
As 50, it is wound around a winding drum 550 through a rust prevention tank 450. In this way, a rust-proofed copper wire (single wire or stranded wire) is manufactured.

<< First Embodiment >> FIG. 1 shows an embodiment of a rust prevention treatment method and a rust prevention treatment device according to the present invention.

In FIG. 1, reference numeral 1 denotes a rust prevention treatment device having a rectangular rust prevention tank 2. The inside of this rectangular rust prevention tank 2 is configured such that a copper wire (single wire or stranded wire) 60 runs in the longitudinal direction. Reference numeral 3 denotes a feed pipe, which is provided on the side surface 4 in the longitudinal direction of the rust preventive tank 2 so that the rust preventive liquid 10 is supplied quantitatively. Reference numeral 5 denotes a discharge pipe, which is provided on a longitudinal side surface 6 of the rust prevention tank 2, and which is quantitatively supplied from the inlet pipe 3 so as to constantly maintain a constant amount in the rust prevention tank 2. The overflow of the liquid 10 is discharged as needed. Rust prevention liquid 1 sent from this inlet pipe 3
0 is circulated and used so that it is discharged from the discharge pipe 5 and sent to the inlet pipe 3 again.

Reference numeral 7 denotes an infrared ray generator.
It is provided in. As shown in FIG. 2, the infrared ray generator 7 is configured by incorporating a heater 72 in an infrared irradiation ceramic 71. 2MgO as infrared radiator
_{· 2Al 2 O 3 · 5SiO 2} , Li 2 O · A 2 O 3 · 4
There is _{SiO 2, 2Al 2 O 3 ·} TiO 2 and the like.

Numeral 8 denotes an infrared ray generator, which is provided on a lid 9 placed on the upper part of the rust prevention tank 2. This infrared generator 8
Is configured in the same manner as the infrared ray generator 7, and as shown in FIG. 2Mg as infrared radiator
O.2Al ₂ O ₃ .5SiO ₂ , Li ₂ O.A ₂ O _3.
There are _{4SiO 2, 2Al 2 O 3 ·} TiO 2 and the like.

Next, the operation of this embodiment will be described.

First, when the rust preventive liquid 10 is filled in the rust preventive tank 2, the infrared generators 7 and 8 are operated, and the rust preventive liquid 10 is irradiated with infrared rays. In this state, the copper wire 6
0 travels at a linear speed of several hundred to several thousand m / hr below the surface of the rust preventive liquid 10. Then, the rust preventive liquid 10 in the rust preventive tank 2 generates a vortex near the travel of the copper wire 60 and the infrared generator 7,
8, molecular movement of the rust preventive liquid 10 around the copper wire 60 becomes active. The eddy current and the molecular motion hit the rust preventive liquid 10 against the surface of the copper wire 60, and the formation of the rust preventive film is sufficiently performed.

As described above, the copper wire 60 travels in the rust preventive liquid 10 below the surface of the rust preventive liquid 10 at a speed of several hundred to several thousand m / hr, and is subjected to rust preventive treatment by immersion treatment. . This copper wire 6
While the vehicle 0 is traveling below the surface of the rust preventive liquid 10 at a linear velocity of several hundreds to several thousand m / hr, infrared rays are emitted by the infrared generators 7 and 8. When the infrared rays are irradiated in this manner, the rust preventive liquid 10 absorbs the infrared rays, causes a resonance phenomenon, raises the energy order between molecules of the rust preventive liquid, increases the vibration, and activates the molecular movement. The activation of the molecular motion generates a large pressure and a high temperature, and promotes the reaction between Cu of the copper wire 60 and benzotriazole (C ₆ H ₄ N ₂ .NH), thereby forming copper benzotriazole (corrosion-resistant coating). ) Is actively formed.

Table 1 shows the test results of the formation thickness of the rust-preventive film when the infrared generators 7 and 8 irradiate infrared rays and when they do not irradiate infrared rays.

[0022] In Table 1, benzotriazole (C ₆ H ₄ N ₂ .NH)
By changing the concentration in three stages, samples were prepared for each of which no infrared irradiation, infrared irradiation for 10 minutes, and infrared irradiation for 30 minutes were performed. The sample irradiated by infrared rays was placed in a rust preventive liquid for 10 minutes, 3
Immediately after irradiating infrared rays for 0 minutes, the copper wire was immersed in a rust preventive liquid for 1 second and then dried. Each of these samples was subjected to a Na ₂ S test. In this Na ₂ S test, one sample was
It was immersed in a 00 ppm Na ₂ S solution for 30 seconds, and the degree of discoloration on the surface of each sample was observed. In the test results, "x" indicates that the entire surface of the sample was discolored, "△" indicates that the entire sample was slightly discolored, and "○" indicates that the sample was not discolored.

From Table 1, it can be seen that benzotriazole (C ₆ H ₄
When the (N ₂ · NH) concentration was 0.3 W / V%, the sample that had not been irradiated with infrared light showed “×” and discoloration appeared on the entire surface of the sample. In addition, when the sample was immersed in the rust preventive solution for 1 second and dried immediately after irradiating the sample with the infrared ray for 10 minutes, no discoloration was observed in the sample due to “○”. Furthermore, the sample was immersed in the rust preventive liquid for 1 second immediately after irradiating the rust preventive liquid with infrared rays for 30 minutes and dried.

Also, benzotriazole (C ₆ H ₄ N ₂₎
When the (NH) concentration was 0.5 W / V%, the sample not irradiated with infrared light showed slight discoloration in the entire sample due to “△”. In addition, immediately after irradiating the rust preventive liquid with infrared rays for 10 minutes, the sample was immersed in the rust preventive liquid for 1 second and dried.
In "O", no discoloration was observed in the sample. further,
Similarly, when the sample was immersed in the rust preventive liquid for 1 second and dried immediately after the rust preventive liquid was irradiated with infrared rays for 30 minutes, no discoloration was observed in the sample with "O".

Further, benzotriazole (C ₆ H ₄ N
₍ 2.NH) concentration of 1.0 W / V%, a sample not irradiated with infrared rays, a sample immersed in a rust preventive liquid for 1 second immediately after irradiating the sample with infrared rays for 10 minutes, Immediately after irradiating the rust solution with infrared rays for 30 minutes, the sample was immersed in the rust preventive solution for 1 second and dried.

By irradiating the rust preventive liquid with infrared rays, Cu and benzotriazole (C ₆ H)
₄ reaction to promote the N ₂ · NH), benzotriazole cupric (antirust coating) can be formed thick are evident. When the thickness of the copper benzotriazole cupric (corrosion-resistant coating) formed by the reaction of Cu and benzotriazole (C ₆ H ₄ N ₂ .NH) on the copper wire 60 according to this embodiment is observed in cross section, FIG. The state is as shown in FIG. FIG.
(A) shows a cross-sectional structure of a copper wire 70 which has been rust-proofed by a conventional rust-proofing apparatus, where 71 is copper, 72 is a rust-proof coating (copper benzotriazole), and 73 is the outer circumference of the rust-proof coating. Benzotriazole attached (C ₆ H ₄ N ₂ .NH)
Layer. FIG. 3B shows a cross-sectional structure of a copper wire 60 that has been rust-proofed by the rust-proofing apparatus according to this embodiment,
Is copper and 62 is a rust preventive coating (benzotriazole second
Copper) and 63 are benzotriazole (C ₆ H ₄ N ₂ .NH) layers adhered to the outer periphery of the rust preventive film. The copper wire 60 and the copper wire 70 to be subjected to the rust-preventive treatment have the same conductor diameter, and the portion of the metal copper 61 and the portion of the metal copper 71 are formed to have the same diameter. The thickness T ₁ of the rust-preventive coating 62 formed on the copper wire 60 subjected to the rust-prevention treatment based on the present embodiment is different from that of the copper wire 70 subjected to the rust-prevention treatment by the conventional method. The thickness T ₀ of the rust coating 72 has a relationship of T ₁ > T ₀ . That is, the rust-proof coating 6 formed on the copper wire 60 subjected to the rust-proof treatment based on the present embodiment.
The thickness of 2 is greater than the thickness of the rust-preventive coating 72 formed on the copper wire 70 that has been subjected to the rust-preventive treatment by the conventional method. Therefore, the thickness t ₁ of the excess benzotriazole layer 63 adhering to the outer periphery of the antirust coating 62 of copper wire 60 made of anticorrosive treatment according to the present embodiment, the rows of rust by conventional methods Rust prevention coating 7 on stripped copper wire 70
The thickness t _{0 of} the excess benzotriazole layer 73 adhering to the outer periphery of _{No. 2} has a relationship of t ₁ > t ₀ .

Therefore, according to the present embodiment, it is possible to supply the oxygen required for forming the rust-preventive film.
The formation of a rust-preventive film can be promoted, the linear velocity can be increased, and the rust-prevention treatment efficiency can be improved as compared with the related art.

Further, according to the present embodiment, the chemical reaction (corrosion-proof coating forming reaction) is promoted by the resonance phenomenon of the rust-preventive liquid molecules by the irradiation of infrared rays, the reaction time is shortened, and the unreacted material is reduced. Can be.

Further, according to the present embodiment, particularly when the copper wire is a stranded wire, the copper wire is fixed around the copper wire by the resonance phenomenon of the rust preventive liquid molecules while the copper wire is immersed in the rust preventive liquid. Since the large pressure and high temperature are generated, the anticorrosion treatment can be performed more quickly and effectively over the details of the stranded wire.

<< Second Embodiment >> FIG. 4 shows a second embodiment of the present invention.

In FIG. 4, the present embodiment differs from the first embodiment shown in FIG. 1 in that the first embodiment shown in FIG. The present embodiment is different from the rust prevention tank 2 in that the lid 9 is provided only on the rust prevention tank 2.

In the figure, reference numeral 20 denotes a rust prevention treatment device having a rectangular rust prevention tank 21. The inside of the rectangular rust prevention tank 21 is configured such that a copper wire (single wire or stranded wire) 60 runs in a direction penetrating from the front surface to the rear surface in the drawing. Reference numeral 22 denotes an infrared ray generator which is provided above the rust prevention tank 21 and may also serve as a lid of the rust prevention tank 21.

Therefore, according to the present embodiment, by adjusting the irradiation amount of the infrared ray generator 22, it is possible to sufficiently supply oxygen required at the time of forming the rust preventive film, and to promote the formation of the rust preventive film. As a result, it is possible to improve the rust prevention treatment efficiency, increase the linear speed,
The rust prevention tank can be made compact.

Further, according to the present embodiment, the chemical reaction (corrosion-resistant coating forming reaction) is promoted by the resonance phenomenon of the rust-preventive liquid molecules due to the irradiation of infrared rays, the reaction time is shortened, and the unreacted material is reduced. Can be.

<< Third Embodiment >> FIG. 5 shows a third embodiment of the present invention.

In FIG. 5, this embodiment differs from the first embodiment shown in FIG. 1 in that the first embodiment shown in FIG. The present embodiment is provided only on the bottom surface of the rust prevention tank, whereas the cover 9 is provided on the lid 9 placed on the upper part of the rust prevention tank 2.

In the drawing, reference numeral 30 denotes a rust prevention treatment device having a rectangular rust prevention tank 31. The inside of the rectangular rust prevention tank 31 is configured such that a copper wire (single wire or stranded wire) 60 runs in a direction protruding from the front surface to the rear surface in the drawing. Reference numeral 32 denotes an infrared ray generator, which is provided on the bottom surface 33 of the rust prevention tank 31.

Therefore, according to the present embodiment, by adjusting the irradiation amount of the infrared ray generator 32, it is possible to sufficiently supply oxygen required for forming the rust-preventive film, thereby promoting the formation of the rust-preventive film. As a result, it is possible to improve the rust prevention treatment efficiency, increase the linear speed,
The rust prevention tank can be made compact.

Further, according to the present embodiment, the chemical reaction (corrosion-resistant film forming reaction) is promoted by the resonance phenomenon of the rust-preventive liquid molecules by the irradiation of infrared rays, the reaction time is shortened, and the unreacted material is reduced. Can be.

<< Third Embodiment >> FIG. 5 shows a third embodiment of the present invention.

In FIG. 5, this embodiment differs from the first embodiment shown in FIG. 1 in that the first embodiment shown in FIG. The present embodiment is provided only on the bottom surface of the rust prevention tank, whereas the cover 9 is provided on the lid 9 placed on the upper part of the rust prevention tank 2.

In the drawing, reference numeral 30 denotes a rust prevention treatment device having a rectangular rust prevention tank 31. The inside of the rectangular rust prevention tank 31 is configured such that a copper wire (single wire or stranded wire) 60 runs in a direction protruding from the front surface to the rear surface in the drawing. Reference numeral 32 denotes an infrared ray generator, which is provided on the bottom surface 33 of the rust prevention tank 31.

Therefore, according to the present embodiment, by adjusting the irradiation amount of the infrared ray generator 32, it is possible to sufficiently supply the oxygen required at the time of forming the rust preventive film, thereby promoting the formation of the rust preventive film. As a result, it is possible to improve the rust prevention treatment efficiency, increase the linear speed,
The rust prevention tank can be made compact.

Further, according to the present embodiment, the chemical reaction (corrosion-resistant coating forming reaction) is promoted by the resonance phenomenon of the rust-preventive liquid molecules by the irradiation of infrared rays, the reaction time is shortened, and the unreacted material is reduced. Can be.

<< Fourth Embodiment >> FIG. 6 shows a fourth embodiment of the present invention.

In FIG. 6, the present embodiment is different from the third embodiment shown in FIG. 5 in that the third embodiment shown in FIG. On the other hand, the present embodiment is provided on one side of the rust prevention tank.

In the figure, reference numeral 40 denotes a rust prevention treatment device having a rectangular rust prevention tank 41. The inside of the rectangular rust prevention tank 41 is configured such that a copper wire (single wire or stranded wire) 60 runs in a direction protruding from the front surface to the rear surface in the drawing. An infrared generator 42 is provided on the side surface 43 of the rust prevention tank 41.

Therefore, according to the present embodiment, since the infrared ray generator 42 is provided on the side surface, it is possible to sufficiently irradiate the rust preventive liquid with the infrared ray. Rust prevention treatment efficiency can be improved, and the linear velocity can be increased and the rust prevention tank can be made more compact than before. Can be.

Further, according to the present embodiment, the chemical reaction (corrosion-proof coating forming reaction) is promoted by the resonance phenomenon of the rust-preventive liquid molecules by the irradiation of infrared rays, the reaction time is shortened, and the unreacted material is reduced. Can be.

<< Fifth Embodiment >> FIG. 7 shows a fifth embodiment of the present invention.

In FIG. 7, the present embodiment is different from the fourth embodiment shown in FIG. 6 in that the fourth embodiment shown in FIG. In this embodiment, on the other hand, the present embodiment is provided on both sides of the rust prevention tank.

In the figure, reference numeral 50 denotes a rust preventive treatment device having a rectangular rust preventive tank 51. Inside the rectangular rust prevention tank 51, a copper wire (single wire or stranded wire) 60 runs in a direction penetrating from the front surface to the rear surface in the drawing. An infrared generator 52 is provided on a side surface 53 of the rust prevention tank 51. An infrared generator 54 is provided on a side surface 55 of the rust prevention tank 51.

Therefore, according to the present embodiment, since the infrared ray generators 52, 54 are provided on the opposing side surfaces 53, 55, it is possible to sufficiently irradiate the rust preventive liquid with infrared rays from both side surfaces. Since a sufficient supply of oxygen required at the time of forming the rust film can be obtained, the formation of the rust prevention film can be promoted, and the rust prevention treatment efficiency can be improved. It can be faster and the rust prevention tank can be made compact.

Further, according to the present embodiment, the chemical reaction (corrosion-resistant film forming reaction) is promoted by the resonance phenomenon of the rust-preventive liquid molecules by the irradiation of infrared rays, the reaction time is shortened, and the unreacted material is reduced. Can be.

[0055]

According to the present invention, since the present invention is constituted as described above, activation of molecular movement by infrared rays causes a resonance phenomenon in the rust preventive liquid to promote a chemical reaction (a rust preventive film forming reaction), The reaction time can be shortened, and the unreacted state can be reduced. Therefore, according to the present invention, a rust-preventive film can be formed quickly and thickly on a copper wire surface.

Further, according to the present invention, since the reaction (chemical reaction) for forming the rust-preventive film is accelerated as compared with the prior art, the time for forming the rust-preventive film can be shortened, and the rust-proofing liquid immersion traveling time can be reduced. Short, that is, if the wire speed of the conventional copper wire is not changed, the length of the rust preventive treatment device can be shortened, and if the rust preventive device is not changed, the wire speed of the copper wire is increased. be able to.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a rust prevention treatment apparatus according to the present invention.

FIG. 2 is an overall perspective view of an infrared ray generator used in the rust prevention treatment device shown in FIG.

FIG. 3 is a cross-sectional view of a part of a copper wire that has been rust-proofed by the rust-proofing device shown in FIG. 1 and a portion of a copper wire that has been rust-proofed by a conventional rust-proofing device.

FIG. 4 is a sectional view showing a second embodiment of the rust prevention treatment apparatus according to the present invention.

FIG. 5 is a sectional view showing a third embodiment of the rust prevention treatment apparatus according to the present invention.

FIG. 6 is a sectional view showing a fourth embodiment of the rust prevention treatment apparatus according to the present invention.

FIG. 7 is a sectional view showing a fifth embodiment of the rust prevention treatment apparatus according to the present invention.

FIG. 8 is a schematic diagram of an apparatus for manufacturing a single wire and a stranded wire to which the present invention is applied.

[Explanation of symbols]

1,20,30,40,50 ....................................
… Rust prevention equipment 2,21,31,41,51,61 ……………………
… Rust prevention tank 7, 8, 22, 32, 42, 52, 54 ………………
… Infrared generator 10 ……………………………………………………
… Rust inhibitor 60 …………………………………………………
…Copper wire

Claims (5)

(57) [Claims] 1. A single wire formed into a desired wire diameter by a wire drawing machine or a stranded wire formed by twisting two or more strands by a twisting machine is immersed in a rust prevention tank filled with a benzotriazole solution. A rustproofing method for rustproofing the single wire or the stranded wire, wherein the rustproofing solution in the rustproofing tank is irradiated with infrared rays from an arbitrary direction. 2. The rust prevention method according to claim 1, wherein the arbitrary direction is a plurality of directions. 3. A single wire formed to a desired wire diameter by a wire drawing machine or a stranded wire formed by twisting two or more strands by a twisting machine is immersed in a rust prevention tank filled with a benzotriazole solution. In the rust prevention treatment device for performing rust prevention treatment on the single wire or the stranded wire, an infrared ray generator is provided on the inner wall surface of the rust prevention tank, and the rust prevention liquid in the rust prevention tank is irradiated with infrared rays. A rust prevention treatment device. 4. The rust prevention treatment device according to claim 3, wherein said infrared ray generator is provided on an inner surface of a rust prevention tank. 5. The rust prevention treatment device according to claim 4, wherein the infrared ray generator is provided on a bottom surface of the rust prevention tank or an inner surface of the lid.