JPS59133399A - Continuous surface treatment method and device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a method and apparatus for continuously subjecting a long material to surface treatments such as degreasing, pickling, electroplating, and anodizing using a solution. .

(Background Art) In order to perform the above-mentioned surface treatment on a long material made of a metal or an alloy, the treatment is performed while the long material is continuously run through a surface treatment solution.

Conventionally, for example, in electroplating, a long material was normally continuously passed through a pretreatment tank and then introduced into an electroplating tank as shown in FIG. In the figure, reference numeral 2 denotes an electroplating tank which contains a plating solution 3, and is configured to stir the solution 3 while circulating it in the direction of the arrow by a stirring pump 4. l is a long material.

In addition, for example, in anodizing aluminum tape, high-speed stirring is required due to significant heat generation on the surface of the material to be treated, so pretreated long materials were introduced into the anodizing tank as shown in Figure 2. . In the figure, 5 is an anodizing tank which houses a processing solution 6 and is provided with a liquid supply lower and a liquid drain port 8 at the front and rear.
A powerful circulation pump 9 kept the solution 6 in the tank in a high-speed laminar flow state.

In these devices, the processing speed can be increased by increasing the relative velocity of the material to be treated and the solution, making the flow of the liquid on the surface of the material turbulent. In both cases, the flow is parallel to the direction of movement of the long material, and it is difficult to obtain turbulent flow. If you try to obtain turbulent flow forcibly, the ripples on the liquid surface will become thicker, and the pump capacity will increase, making it difficult to agitate the entire liquid. To become
Energy costs become a dog. For this reason, there is a limit to the speed-up of surface treatment, and the productivity is low, and many long treatment tanks are required, resulting in an increase in equipment investment and an increase in the number of scenes.

(Disclosure of the Invention) The present invention has been made to solve the above-mentioned problems, and by applying vibration to a long material in a solution using a simple device, the surface treatment ability is improved and the treatment is improved. It is an object of the present invention to provide a continuous surface treatment method for long materials and an apparatus therefor that can easily achieve high speed.

A first aspect of the present invention is a method of surface-treating a long material by continuously passing it through a surface treatment solution, which includes applying vibration in a direction perpendicular to the traveling direction to the long material in the solution. This is a continuous surface treatment method characterized by:

A second aspect of the present invention is an apparatus for surface-treating a long material by continuously passing it through a surface treatment solution. This continuous surface treatment apparatus is characterized by being equipped with a vibration device that applies vibration in a direction perpendicular to the direction of movement.

In the present invention, the long material is a long material such as a wire, strip, tape, or plate, and is, for example, a metal or alloy such as Cu, Aβ, Fe, Ni, or an alloy thereof, or a composite material thereof.

Further, the term "surface treatment" refers to general surface treatments using solutions such as electroplating, anodizing, degreasing, and pickling.

Examples include electrolytic tin and solder plating of copper wires, electrolytic galvanizing of steel wires and plates, and anodizing treatments of aluminum wires and strips.

Hereinafter, the present invention will be explained by examples using the drawings. FIGS. 3 and 4 are block diagrams for explaining an embodiment of the method of the present invention, respectively. What is shown in FIG. 3 is sinker roll 1. ], J] A vibration 12 in a direction perpendicular to the traveling direction is applied to a long material l immersed in a liquid solution 10.

In the case shown in FIG. 4, the solution tank 18 is an overflow set, the solution 10 is circulated by the circulation tank 14 and the circulation pump 15, and the long material 1 is immersed in the solution 10 in a straight line. This applies vibration 12' to the length 1 in a direction perpendicular to the direction of movement.

Due to such vibrations 12.12', the long material 1 and the solution IO move relative to each other in the direction perpendicular to the direction of movement.
A turbulent flow of solution 10 is easily obtained. This turbulent flow of the solution accelerates the diffusion of ions in the solution near the material to be treated, equalizes the solute ion concentration and temperature, increases the reaction rate, and prevents bubbles from adhering to the material to be treated. Enables high-speed, high-quality surface treatment.

For example, in the case of electroplating, the diffusion of metal ions into the plated material, the diffusion of metal ions from the surface, and the dissipation of heat are accelerated.
In order to prevent the adhesion of air bubbles, the current density can be increased, allowing high-speed and high-quality electroplating.

Although vibration exhibits complicated behavior depending on the additional conditions and is difficult to specify, the vibration in the vibration applying section has an imaging width of 0.5 to 20 mm, preferably 1 to 10 mm, and a frequency of 1 to 500 Hz.

Preferably, a frequency of 10 to 200 Hz can give good results in many cases.

In addition, in the present invention, stirring of the solution may be used in combination as shown in FIG.

Next, there are no particular restrictions on the method of applying vibration to the long material, and mechanical or electrical vibration devices such as a rotating uneven roller (FIG. 5), an electromagnetic vibration device, etc. can be used.

FIG. 5 is a block diagram showing an embodiment of the apparatus of the present invention. In the figure, the same reference numerals as in FIG. 4 indicate the same parts. In the figure, a concavo-convex roller 16 is provided in contact with the elongated material 1 that has exited the solution tank 13.

This uneven roller 16 is self-driven or is running on a long material l.
When the elongated material 1 rotates due to the friction of

In this case, the vibration of the long material 1 in the solution 10 has the largest amplitude on the uneven roller 16 side and is non-uniform.

Therefore, in order to vibrate each part of a long material with the same amplitude and frequency in an electroplating tank, for example, it is preferable to provide a vibrating device (eg, an uneven roller) at both the entrance and exit of the tank. Note that the uneven roller 16 shown in FIG. 5 may be provided outside the solution tank 18 on the inlet side. Further, a vibrating guide may be provided in the tank.

Next, when surface treatment does not involve electrolysis, there is no need to be careful other than adjusting the tension so that the long material does not stretch or deform; however, when surface treatment involves electrolysis, the long material If significant vibration is applied to the power supply part of the power supply, the power supply becomes unstable, so it is preferable to take measures as shown in FIG. 6, for example. In the figure, an excitation device 17.1'7 is provided at the entrance/exit outside the tank in contact with the long material l passing through the solution tank 13, and a power supply section 18 is provided outside of the vibrating device 17.1'7 for supplying power to the long material 1. .18 is provided.

In order to prevent vibrations from being transmitted to the long material l of the power supply section 18 and the power supply becoming unstable, a vibration isolating section 19 such as a rubber roller is provided between the vibration excitation device 17 and the power supply section 17 . .

(Example 1) Using an apparatus as shown in Fig. 6, the thickness was 0.2 mrn.
Electrical steel plating was applied to a phosphor bronze tape with a Z width of 10 ml.

Before and after the plating tank, a stainless steel uneven roller was provided as the vibration device 17, a power supply roll was provided as the power supply section 18, and a rubber roller was provided as the vibration isolation section 19 between them.

The plating line ran horizontally, and after performing alkaline electrolytic degreasing as pretreatment, it was led to the electroplating bath. The plating bath had a length of 1 m, and a plating solution having the following composition was used at room temperature.

Table 1 shows the results of determining the limiting current density by changing the vibration added to the tape by the uneven roller to the frequency and amplitude shown in Table 1.
As shown.

The winding speed was 2771/min, and the winding tension was 10 to 15 kg.

Table 1 From Table 1, it can be seen that in A2 to A& according to the present invention, the limiting current density effectively increases as the frequency or amplitude increases.

(Example 2) A 2 mm $ aluminum wire was anodized using the method and apparatus of the present invention.

After performing alkali etching while running at a line speed of 7 minutes, cathodic electrolysis was performed in a 30% H2804 solution, and then anodization treatment was performed in a 480% H280 solution at 10°C. The cathode electrolyzer and anode electrolyzer were separated by an orifice.

A vibrating plate was installed before the cathode electrolyzer and after the anode electrolyzer, and anodization was performed by vibrating at a frequency of 100 Hz and an amplitude of 2. No burn occurred even at a current density of 100 A/d 77. . By the way, if no vibration is added, the value is 15.
A/dnf caused burns.

(Example 3) A 9.0.78 mmf copper wire was subjected to alkaline electrolytic degreasing and electrolytic pickling using the method and apparatus of the present invention.

Each solution tank had a length of 1 m, and the solution conditions were as follows.

In addition, the positive side of the power supply is connected to the opposite electrode of the alkaline electrolytic degreasing tank, and the negative electrode side is connected to the opposite electrode of the electrolytic pickling tank, and a stainless steel uneven roller is installed between the degreasing tank and the pickling tank to add additional power to the wire. The vibration was changed to the frequency and amplitude shown in Table 2, the linear velocity was 2 m/min, and the maximum current density obtained on a clean surface was determined. The results are shown in Table 2.

Table 2 From Table 2, it can be seen that the maximum current density increases in A16 to A28 according to the present invention. However, the amplitude force is 0.1
In my case, the current density hardly increases, and increases as the frequency or amplitude increases, and when the amplitude becomes larger than 75, the scattering of the solution becomes more pronounced.

(Effects of the Invention) The continuous surface treatment method of the present invention configured as described above has the following effects.

Since vibrations are applied to the long material in the surface treatment solution in a direction perpendicular to the direction of travel, the long material and the solution move relative to each other in the direction perpendicular to the direction of travel, making it easy to obtain turbulent flow of the solution. This speeds up the diffusion of ions in the solution near the treated material,
It equalizes the solute ion concentration and temperature, increases the reaction rate, and prevents air bubbles from adhering to the treated material, making it easy to speed up surface treatment and achieve high-quality surface treatment, which improves production. It has great properties, requires only a small number of short tanks, is inexpensive, and generates a small amount of layer.

For example, in electroplating, as described above, the limiting current density can be increased in order to speed up the diffusion of metal ions in the solution and prevent the adhesion of bubbles, making it possible to perform high-speed and high-quality electroplating.

The continuous surface treatment apparatus of the present invention configured as described above has the following effects.

A vibrating device that applies vibration in a direction perpendicular to the traveling direction to the long material in the solution tank is installed at the front and/or rear outside of the surface treatment solution tank, so that the long material in the solution can be effectively vibrated. and has the same effect as the invention of the method described above,
Since the vibration device 75 is located outside the construction tank, it is possible to easily apply vibrations to the long material in the solution without causing violent rippling of the solution or scattering of the solution, and the device is suitable for the above-mentioned method of the present invention. It provides:

[Brief explanation of drawings]

FIGS. 1 and 2 are block diagrams showing examples of conventional continuous surface treatment apparatuses, respectively. FIG. 3 and FIG. 4 are block diagrams for explaining an embodiment of the method of the present invention, respectively. FIGS. 5 and 6 are block diagrams showing embodiments of the apparatus of the present invention, respectively. 1... Long material, 2... Electroplating tank, B, 6.10
...Solution, 4.. Stirring pump, 5.. Anodizing tank, 7.. Liquid supply port, 8.. Drain port, 9.15..
Circulation pump, 11... sinker roll, 12.12'
...Vibration, 1B...Solution tank, 14...Circulation tank, 1
6... Concave and convex roller, 17... Calo vibration device, I8.
...Power supply section, 19...Vibration isolation section. Agent Patent Attorney Aoki 1-1-3 Shimaya, Konohana-ku, Osaka 597-

Claims (1)

[Claims] (+) A method of subjecting a long material to surface treatment by continuously passing it through a surface treatment solution, in which vibration is applied to the long material in the solution in a direction perpendicular to the direction of movement. A continuous surface treatment method characterized by: (2) The continuous surface treatment method according to claim 1, wherein the surface treatment is degreasing, pickling, electroplating, or anodizing treatment. (3) Claim 1 in which the vibration is applied in the range of amplitude 0.5 to 20 mm, frequency of vibration 1 to 500 Hz.
Continuous surface treatment equipment as described in section. (4) In a device that performs surface treatment by continuously passing a long material through a surface treatment solution, there is a spacer installed at the front and/or rear outside the surface treatment solution tank that is perpendicular to the traveling direction of the long material in the solution tank. A continuous surface treatment device characterized by being provided with a vibration device that adds directional vibration. (5) The continuous surface according to claim 4, wherein a vibration excitation device is provided between a power supply section and a surface treatment solution tank, and a vibration isolation section is provided between the power supply section and the vibration vibration device. Processing method. (6) The continuous surface treatment apparatus according to claim 4 or 5, wherein the vibrating device comprises an uneven roller that rotates in contact with the elongated material.