JP2007051361A - Method for producing metallic material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a metallic stock where a soiled metallic stock is cleaned with reduced stages without producing a waste solution so as to produce the pure metallic stock. <P>SOLUTION: In the conventional cleaning system using a detergent, at least five stages are required for cleaning a metallic material 90, but, in the cleaning system 1, the cleaning effect same as that in the case a detergent is used can be obtained by four stages of: a first stage where soil is washed off by using minus ion water having cleaning capacity almost same as that of a detergent; a second stage where purity of moisture stuck to the surface of the metallic material 90 is increased by using pure water; and third and fourth drying stages. Further, since water is used for cleaning, by only performing simple filtering, cleaning can be performed without producing a waste solution. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a metallic material manufacturing method for cleaning a dirty metal material and manufacturing the clean metal material.

  2. Description of the Related Art Conventionally, as a photosensitive drum used as a photosensitive member for a printer or a copier, a drum in which a photosensitive member is laminated on a surface of a cylindrical aluminum tube (hereinafter referred to as an aluminum photosensitive drum) is used.

When this aluminum photosensitive drum is manufactured, dust and dirt adhere to the surface of the aluminum photosensitive drum. Therefore, the aluminum photosensitive drum has been cleaned using the cleaning system described below.
Here, FIG. 4 is a schematic diagram of a process of cleaning the aluminum photosensitive drum in the method 100 for manufacturing the aluminum photosensitive drum.

  In the step of cleaning the aluminum photosensitive drum in the manufacturing method 100 of the aluminum photosensitive drum, as shown in FIG. 4, the aluminum photosensitive drum is stored in a pallet using an overhead crane installed above the cleaning tanks 110 to 118. In addition, the aluminum photosensitive drum is transported, and a pallet is sequentially carried into each of the cleaning tanks 110 to 118 by the crane to clean the aluminum photosensitive drum.

  In the first step, pure water 110b mixed with a neutral detergent is stored in the cleaning tank 110, and the aluminum photosensitive drum is immersed in the water 110b mixed with the neutral detergent. The pure water 110b stored in the cleaning tank 110 is vibrated by the ultrasonic waves emitted from the ultrasonic oscillator 110a. In this first step, a process for removing dirt from the aluminum photosensitive drum is performed by the action of vibrating pure water and detergent (cleaning 1).

  In the second step, pure water 112b is stored in the cleaning tank 112, and the aluminum photosensitive drum is immersed in the pure water 112b stored in the cleaning tank 112 for 30 seconds. In the second step, a process (pure water rinsing 1) is performed in which the detergent adhering to the surface of the aluminum photosensitive drum is diluted and removed.

  In the third step, pure water 114b is stored in the cleaning tank 114, and the aluminum photosensitive drum is immersed in the pure water 114b stored in the cleaning tank 114 for 30 seconds. In this second step, a process (pure water rinsing 2) is performed in which the detergent adhering to the surface of the aluminum photosensitive drum is diluted and removed.

  In the fourth step, pure water at 90 to 95 ° C. is stored in the cleaning tank 116, the aluminum photosensitive drum is immersed in the warm pure water stored in the cleaning tank 116, and is immediately pulled up. In the fourth step, pure water adhering to the surface of the aluminum photoconductor drum is evaporated to perform a process of removing moisture from the surface of the aluminum photoconductor drum (warm pure water pulling up).

  In the fifth step, when the aluminum photosensitive drum is carried into the cleaning tank 118, hot air is blown onto the aluminum photosensitive drum. In the fifth step, a process is performed in which moisture adhering to the surface of the aluminum photosensitive drum is blown off by blowing hot air onto the surface of the aluminum photosensitive drum and dried (hot air drying).

  Next, cleaning of an aluminum pipe generally called a sleeve will be described. When this aluminum pipe is manufactured, dust and dirt adhere to the surface of the aluminum pipe. Therefore, the aluminum pipe has been cleaned using the cleaning system described below.

Here, FIG. 4 is a schematic view of a process of cleaning the aluminum pipe in the aluminum pipe manufacturing method 200.
In the aluminum pipe manufacturing method 200, in the step of cleaning the aluminum pipe, as shown in FIG. 4, the aluminum pipe stored in the pallet is used by using an overhead crane installed above each of the cleaning tanks 210-222. While carrying, the pallet is carried in order to each washing tank 210-222 with the crane, and the operation | work which wash | cleans an aluminum pipe is performed.

  In the first step, pure water 210b mixed with a neutral detergent is stored in the cleaning tank 210, and the aluminum photosensitive drum is immersed in water 210b mixed with the neutral detergent. The pure water 210b stored in the cleaning tank 210 is vibrated by ultrasonic waves emitted from the ultrasonic oscillator 210a. In this first step, a process for removing dirt from the aluminum photosensitive drum is performed by the action of vibrating pure water and detergent (cleaning 1).

  In the second step, pure water 212b mixed with a neutral detergent is stored in the cleaning tank 212, and the aluminum photosensitive drum is immersed in water 212b mixed with the neutral detergent. The pure water 212b stored in the cleaning tank 212 is vibrated by the ultrasonic wave emitted from the ultrasonic oscillator 212a. In this second step, the process of removing the dirt on the aluminum photosensitive drum is performed following the first step by the action of vibrating pure water and detergent (cleaning 2).

  In the third step, pure water 214 b is stored in the cleaning tank 214, and the aluminum pipe is immersed in the pure water 214 b stored in the cleaning tank 214. The pure water 214b in the cleaning tank 214 is vibrated by the ultrasonic waves emitted from the ultrasonic oscillator 214a. In this third step, the detergent used in the first and second steps is washed away, and the purity of the moisture mixed with impurities adhering to the aluminum pipe is increased using pure water, so that the surface of the aluminum pipe is removed. A process of removing impurities contained in the attached water (pure water rinse 1) is performed.

  In the fourth step, pure water 216b is stored in the cleaning tank 216, and the aluminum pipe is immersed in the pure water 216b stored in the cleaning tank 216. The pure water 216b in the cleaning tank 216 is vibrated by the ultrasonic waves emitted from the ultrasonic oscillator 216a. In this fourth step, the detergent used in the first and second steps is further washed away, and the purity of the moisture mixed with impurities adhering to the aluminum pipe is further increased using pure water, thereby A process of removing impurities contained in water adhering to the surface (pure water rinse 2) is performed.

  In the fifth step, pure water 218b is stored in the cleaning tank 218, and the aluminum pipe is immersed in the pure water 218b stored in the cleaning tank 218. The pure water 218b in the cleaning tank 218 is vibrated by the ultrasonic waves emitted from the ultrasonic oscillator 218a. In this fifth step, the detergent used in the first and second steps is further washed away, and the purity of the water mixed with impurities adhering to the aluminum pipe is further increased using pure water, thereby A process of removing impurities contained in moisture adhering to the surface (pure water rinsing 3) is performed.

  In the sixth step, 90 to 95 ° C. pure water is stored in the cleaning tank 220, and the aluminum pipe is immersed in the warm pure water stored in the cleaning tank 220 and immediately pulled up. In the ninth step, the pure water adhering to the surface of the aluminum pipe is evaporated to carry out a process of removing moisture from the surface of the aluminum pipe (warm pure water pulling up).

  In the seventh step, when the aluminum pipe is carried into the cleaning tank 222, hot air is blown onto the aluminum pipe. In the seventh step, a process is carried out in which moisture adhering to the surface of the aluminum pipe is blown by blowing hot air onto the surface of the aluminum pipe and drying (hot air drying).

  However, in the above-described method 100 for manufacturing the aluminum photosensitive drum, the detergent is used in the first step, and the treatment for removing the detergent in the third and fourth steps is performed twice, or the aluminum pipe is manufactured. In the method 200, since the detergent is used in the first and second steps, there is a problem that a large number of steps are required, for example, the detergent is processed three times in the third to fifth steps. .

Further, the conventional aluminum photosensitive drum manufacturing method 200 and the aluminum pipe manufacturing method 200 use a detergent, so that there is a problem in that these waste liquids are difficult to process.
Therefore, the present invention aims to solve the above problems and provide a method for producing a metallic material capable of cleaning a dirty metal material (aluminum photosensitive drum or aluminum pipe) with a small amount of process and no waste liquid. To do.

In order to achieve the above object, a method for producing a metal material is a method for producing a metallic material, in which a dirty metal material is washed to produce a clean metal material. In an ion cleaning tank in which negative ion water obtained by electrolyzing pure water and pressurizing at a pressure of 4 kg / cm ² or more is immersed in the metal material in the negative ion water, An ionic water cleaning step for cleaning the metal material; and a rinse cleaning step for cleaning the metal material by immersing the metal material in the pure water in a first cleaning tank in which pure water is stored. And a drying step of drying moisture adhering to the metal material.

  In this method of manufacturing a metal material, instead of cleaning using a detergent, cleaning using negative ion water (described later) with a very high cleaning ability discovered by the applicant of the present application is performed. No need to remove the detergent from the container. Therefore, if this metal material manufacturing method is used, the metal material can be cleaned in a small number of three steps. In addition, in this metal material manufacturing method, cleaning is not performed using a detergent, and even if waste liquid comes out, it is possible to treat the waste liquid to a harmless state only by performing a simple treatment. The metal material can be washed with no waste liquid. Furthermore, in this method of manufacturing a metal material, when performing the same cleaning as in the prior art, it is only necessary to perform the two steps of the rinse cleaning step and the drying step described above in addition to the ion cleaning step. That is, in the rinse cleaning process, negative ion water containing dirt brought into the first cleaning tank is immersed in pure water and dropped, and in the drying process, the pure water on the surface of the metal material is blown off. If processing is performed, cleaning with the same effect as the conventional one can be performed.

  By the way, as described in claim 2, in the drying step, the first drying is performed in which the metallic material is dipped in the second cleaning tank in which the heated pure water is stored and pulled up to evaporate the pure water from the metallic material. You may perform a process and the 2nd drying process which sprays a hot air on metal materials. Thus, if it dries many times, a water | moisture content can be fully discharged from metal materials. Further, if more importance is attached to removing dirt, the spray cleaning process for cleaning the metal material by spraying water on the metal material as described in claim 3 is performed by an ionic water cleaning process and a rinse cleaning process. In the drying step, the second drying step of blowing hot air on the metal material may be executed.

  Next, in the metal material manufacturing method described above, in the first step, the negative ion water is vibrated using the ultrasonic oscillation means, the metal material is immersed in the vibrating negative ion water, and the metal material is made. The material is washed. Therefore, if this metal material manufacturing method is used, the metal material is cleaned not only by the cleaning power of negative ion water but also by ultrasonic vibration, so that the metal material can be cleaned more cleanly.

  Moreover, in the manufacturing method of the metal material mentioned above, in the 1st process, the metal material is immersed and wash | cleaned in the negative ion water by which the hydrogen ion concentration was maintained using the maintenance means. In this way, even if dirty metal material is washed repeatedly by flow work etc., the ability to wash negative ion water will not drop, so even if dirty metal material is washed repeatedly, the metal material can be cleaned at any time Can be washed.

[First embodiment]
A first embodiment of the present invention will be described below.
Here, FIG. 1 shows a cleaning that executes a step of cleaning the metallic material 90 in a manufacturing method of the aluminum photosensitive drum 90a and an aluminum pipe 90b called a sleeve (hereinafter generally referred to as a metallic material 90). 1 is a schematic diagram of a system 1. FIG.

  The cleaning system 1 according to the first embodiment includes four steps. In the cleaning system 1, a pallet 98 that holds a plurality of metal materials 90 in an upright state and a crane 99 that transports the pallet 98 are used. And in this washing | cleaning system 1, using these pallets 98 and the crane 99, the metal material 90 is carried in the washing tank which performs each process, and when each process is complete | finished, it is made from metal from the washing tank which performs a previous process. It is carried out by repeatedly carrying out the work of carrying out the material 90 and carrying the metal material 90 into a cleaning tank for executing the next step.

  In the first step, an ultrasonic oscillator 10a (corresponding to the ultrasonic oscillating means of the present invention) is installed, and a cleaning tank 10 (corresponding to the ion cleaning tank of the present invention) in which negative ion water 10b described later is stored is used. To be implemented. Further, the negative ionic water 10b overflowing from the cleaning tank 10 is collected and filtered in this cleaning tank 10, and the hydrogen ion concentration is recovered through the ionosphere and supplied from below the cleaning tank 10, or the cleaning tank 10 The negative ion water 10b overflowing from the water is filtered and discarded, and a maintenance device 10c that supplies new negative ion water to the washing tank 10 to maintain the hydrogen ion concentration of the negative ion water (in the maintenance means of the present invention). Equivalent). In this first step, when the metal material 90 is carried into the cleaning tank 10, the ultrasonic oscillator 10a is activated, and the negative ion water 10b that is oscillated by receiving the ultrasonic wave oscillated from the ultrasonic oscillator 10a. Soak for about 40 seconds. In the first step, cleaning (minus ion water cleaning) is performed to remove fine dust and other contaminants attached to the surface of the metal material 90 by cleaning with negative ion water and cleaning with vibration. The frequency oscillated from the ultrasonic oscillator 12a is a sound wave of 18000 Hz or more. Further, in order to maintain the hydrogen ion concentration in the negative ion water 10b, silicon may be mixed if necessary if it is a very small amount. This first step corresponds to the ionic water cleaning step of the present invention.

  In the second step, the cleaning is performed using the cleaning tank 12 in which pure water 12b is stored (such as the first cleaning tank of the present invention). In this second step, the metal material 90 is carried into the cleaning tank 12 and immersed for about 40 seconds. In the second step, a process of dropping negative ion water containing dirt brought into the cleaning tank 12 by immersing it in pure water is performed. This second step corresponds to the rinse cleaning step of the present invention.

  In a 3rd process, it implements using the washing tank 14 in which the 90-95 degreeC pure water 14b was stored. In this third step, the substrate is immersed in pure water 14b for about 40 seconds and then pulled up. In the third step, the water adhering to the surface of the metal material 90 is pulled up by being immersed in high-temperature pure water 14b in order to fly away by evaporation. This third step corresponds to the first drying step of the present invention.

  In the fourth step, the metal material 90 is carried into the cleaning layer 16 to which the hot air device 16a for blowing hot air of 80 to 90 ° C. is attached. In the fourth step, when the metal material 90 is carried, the hot air device 16a is activated, and the hot air is blown to the metal material 90 in the cleaning tank 16 to further dissipate moisture adhering to the surface of the metal material 90. Executed. This fourth step corresponds to the second drying step of the present invention.

  In the cleaning system 1 described above, cleaning using negative ion water is performed instead of cleaning using a detergent that has been performed by a conventional manufacturing method, so that the process of removing the detergent from the metal material 90 is not necessary. . Therefore, if the cleaning system 1 of the present embodiment is used, the metal material 90 can be cleaned in a small number of steps. Further, in this cleaning system 1, cleaning is not performed using chemicals such as detergents, and even if waste liquid comes out, it is dust attached to the surface of the metal material 90, so only simple processing is performed. Thus, it is possible to treat the waste liquid to a harmless state. Therefore, if this cleaning system 1 is used, the metal material 90 can be cleaned with no waste liquid. Further, when the cleaning system 1 of the present embodiment is used, when performing cleaning with the same cleaning effect as the conventional one, as a process performed in addition to the above ion cleaning process, a rinse cleaning process equivalent to the above-described second to fourth processes. It is only necessary to perform two steps, (second) and drying steps (third and fourth). That is, in the rinsing cleaning process, negative ion water containing dirt brought into the cleaning tank 12 is dropped by being immersed in pure water, and in the drying process, pure water on the surface of the metal material 90 is blown off. If processing is performed, cleaning with the same effect as the conventional one can be performed.

  In the cleaning system 1 described above, in the first step, the negative ion water is vibrated using the ultrasonic oscillator 10a, and the metallic material 90 is immersed in the vibrating negative ion water to wash the metallic material 90. ing. Therefore, if this washing | cleaning system 1 is used, since the metal material 90 will be wash | cleaned by the vibration of an ultrasonic wave in addition to the washing | cleaning power of negative ion water, the metal material 90 can be wash | cleaned more cleanly.

Further, in the cleaning system 1 described above, in the first step, the metal material 90 is immersed and cleaned in negative ion water in which the hydrogen ion concentration is maintained using the maintenance device 10c. In this way, even if the dirty metal material 90 is repeatedly washed by a flow operation or the like, the cleaning ability of negative ion water does not deteriorate. Therefore, even if the dirty metal material 90 is repeatedly washed, the metal material can be used at any time. 90 can be washed cleanly.
[Second Embodiment]
A second embodiment of the present invention will be described below. In the following description, the same components as those in the first embodiment will be described with the same reference numerals.

  Here, FIG. 1 shows a cleaning system 3 that executes a step of cleaning the metallic material 90 in a manufacturing method of an aluminum photosensitive drum 90a and an aluminum pipe 90b called a sleeve (hereinafter generally referred to as a metallic material 90). FIG.

  The cleaning system 3 according to the second embodiment includes four steps. In the cleaning system 3, a pallet 98 that holds a plurality of metal materials 90 in an upright state and a crane 99 that transports the pallet 98 are used. And in this washing | cleaning system 3, using these pallets 98 and the crane 99, the metal material 90 is carried in the washing tank which performs each process, and when each process is complete | finished, it is made from metal from the washing tank which performs a previous process. It is carried out by repeatedly carrying out the work of carrying out the material 90 and carrying the metal material 90 into a cleaning tank for executing the next step.

  In the first step, an ultrasonic oscillator 30a (corresponding to the ultrasonic oscillating means of the present invention) is installed, and a cleaning tank 30 (corresponding to the ion cleaning tank of the present invention) in which negative ion water 30b described later is stored is used. To be implemented. Further, the negative ionic water 30b overflowing from the cleaning tank 30 is collected and filtered in this cleaning tank 30, and the hydrogen ion concentration is recovered through the ionosphere and supplied from below the cleaning tank 30, or the cleaning tank 30 The negative ion water 30b overflowing from the water is filtered and exhausted, and a new negative ion water is supplied to the cleaning tank 30 to maintain the hydrogen ion concentration of the negative ion water (corresponding to the maintenance means of the present invention). ). In the first step, when the metal material 90 is carried into the cleaning tank 30, the ultrasonic oscillator 30a is activated, and the negative ion water 30b that is oscillated by receiving the ultrasonic wave oscillated from the ultrasonic oscillator 30a. Soak for about 40 seconds. And in this 1st process, the main washing | cleaning which is the washing | cleaning which removes the oil component which cannot be removed even if it passes through the 1st and 2nd process, fine garbage, and other contaminants is performed. The frequency oscillated from the ultrasonic oscillator 12a is a sound wave of 18000 Hz or more. Further, in order to maintain the hydrogen ion concentration in the negative ion water 10b, silicon may be mixed if necessary if it is a very small amount. This first step corresponds to the ionic water cleaning step of the present invention.

  In the second step, the cleaning is performed using the cleaning tank 32 in which the shower device 32a is installed. In this second stage, when the metal material 90 is carried into the cleaning tank 32, the shower device 32a is activated, and tap water is sprayed toward the metal material 90 for about 40 seconds. In this first step, rough removal is performed to roughly remove contaminants such as protective film oil, cutting oil, or cutting waste adhering to the surface of the metal material 90. This first step corresponds to the pre-cleaning step of the present invention.

  The third step is performed using a cleaning tank 34 (equivalent to the first cleaning tank of the present invention) in which pure water 34b is stored. In the third step, the metal material 90 is carried into the cleaning tank 34 and immersed for about 40 seconds. In the third step, the negative ion water containing dirt brought into the cleaning tank 34 is removed by immersing the metal material 90 in pure water. This second step corresponds to the rinse cleaning step of the present invention.

  In the fourth step, the metal material 90 is carried into the cleaning layer 36 to which the hot air device 36a for blowing hot air of 80 to 90 ° C. is attached. In this fourth step, when the metallic material 90 is carried, the hot air device 36a is activated, hot air is blown to the metallic material 90 in the cleaning tank 36, and moisture attached to the surface of the metallic material 90 is further blown away. . This fourth step corresponds to the second drying step of the present invention.

  In the cleaning system 1 described above, cleaning using negative ion water is performed instead of cleaning using a detergent that has been performed by a conventional manufacturing method, so that the process of removing the detergent from the metal material 90 is not necessary. . Therefore, if the cleaning system 1 of the present embodiment is used, the metal material 90 can be cleaned in a small number of steps. Further, in this cleaning system 1, cleaning is not performed using chemicals such as detergents, and even if waste liquid comes out, it is dust attached to the surface of the metal material 90, so only simple processing is performed. Thus, the metal material 90 can be washed with no waste liquid by treating the waste liquid to a harmless state. Furthermore, when the cleaning system 1 of the present embodiment is used, when performing cleaning with the same cleaning effect as the conventional one, the step performed in addition to the ion cleaning step is a rinse cleaning step equivalent to the third to fourth steps described above. It is only necessary to perform the three steps of (third) and drying step (fourth). That is, in the rinse cleaning step, negative ion water containing dirt brought into the first cleaning tank is dropped by being immersed in pure water, and in the drying step, the pure water attached to the surface of the metal material 90 is removed. If the process of skipping is performed, cleaning with the same effect as the conventional one can be performed. From this, it can be seen that when the second step is executed, the metal material 90 can be more effectively cleaned than before.

  In the cleaning system 1 described above, in the first step, the negative ion water is vibrated using an ultrasonic oscillator, and the metal material is immersed in the vibrating negative ion water to wash the metal material. Therefore, if this washing | cleaning system 1 is used, since the metal material 90 will be wash | cleaned by the vibration of an ultrasonic wave in addition to the washing | cleaning power of negative ion water, the metal material 90 can be wash | cleaned more cleanly.

  Further, in the cleaning system 1 described above, in the first step, the metal material 90 is immersed and washed in negative ion water in which the hydrogen ion concentration is maintained using the maintenance device 30c. In this way, even if the dirty metal material 90 is repeatedly washed by a flow operation or the like, the cleaning ability of negative ion water does not deteriorate. Therefore, even if the dirty metal material 90 is repeatedly washed, the metal material can be used at any time. 90 can be washed cleanly.

Next, the negative ion water used in this embodiment will be described.
Here, FIG. 2 is a schematic diagram for explaining the production process of negative ion water of the present embodiment.

As shown in FIG. 2, in the method for producing negative ion water of this embodiment, negative ion water is produced from pure water through three steps.
In the deoxygenation step 50 as the first step, deoxygenation treatment is performed using an ion exchange membrane to reduce the concentration of dissolved oxygen in pure water to 1 ppm or less.

  In the electrolysis step 52, which is the second step, an electrode is placed in the deoxygenated pure water to electrolyze the pure water, and the cathode chamber side where the negative electrode is placed is taken out. Perform disassembly.

In the stabilization process 54 which is the third process, a pressure of 4 kg / cm ² was applied in a stabilization tank in which the pure water on the cathode chamber side was sealed out of the pure water electrolyzed in the electrolysis process. A stabilization process is performed for 2 to 3 days in the state. The pressure applied to pure water in the stabilization treatment is preferably 4 kg / cm ² or more, more preferably 12 kg / cm ² or more.

Hereinafter, the results of experiments on negative ion water obtained through these three manufacturing steps will be described for reference.
<Experimental Example 1 (Negative Ionized Water Stability over Time of this Embodiment)>
The test liquid 1 is negative ion water of the present embodiment, the test liquid 2 is negative ion water called “Redox Water Type IS ′ generator” manufactured by Redox Corporation, and the test liquid 3 is Amano Corporation. Manufactured and trade name: Electrolytic cleaning water purification device Σ3000 is negative ion water. And in this experiment, these test solutions were poured into a 100 ml transparent glass bottle to make it full. Then, these test solutions were left open at room temperature, and the pH change, oxidation-reduction potential (ORP) change, and appearance change were measured every predetermined time. The same measurement was performed even in a sealed state.

外観観察では、３者間に有意の差は認められなかったが、ｐＨ変化および酸化還元電位（ＯＲＰ）変化は表１に示されている通り、本実施形態のマイナスイオン水のｐＨが開放して放置したものについては７２時間放置しても１０に保たれていた一方で、他社品のｐＨは１０を下回っている。また、密閉したものについては、本実施形態のマイナスイオン水は７２時間放置してもｐＨが１２．２に維持されていた一方で、他社品のｐＨは１０を下回った。

In the appearance observation, no significant difference was observed between the three, but as shown in Table 1, the pH change and the oxidation-reduction potential (ORP) change were released when the pH of the negative ion water of this embodiment was released. For those that were left unattended, they were kept at 10 even after being left for 72 hours, while the pH of other companies' products was below 10. As for the sealed one, the pH of the negative ion water of this embodiment was maintained at 12.2 even after being left for 72 hours, while the pH of the other company's product was lower than 10.

From this, it was proved that the negative ion water of the present embodiment stably maintains a state where electrons are physically excessive by ionization for a long period of time. It is known that fungi that are microorganisms (gram-negative bacteria, gram-positive bacteria, sputum, etc.) cannot reproduce in highly alkaline areas. Therefore, the negative ion water of this embodiment is expected to have a bactericidal effect. Then, it experimented about the bactericidal action of the negative ion water of this embodiment next.
<Test example 2 (antibacterial action of negative ion water of this embodiment)>
The test liquid 1 is negative ion water of the present embodiment, and the test liquid 2 is sterilized and purified water made by Redox Co., Ltd., trade name: redox water type IS ′ generator. As a test method, a generally used “plate culture method” is used, the storage temperature is set to 25 ° C., and test solutions 1 and 2 and various bacteria are injected into a petri dish used for culture, The number of viable bacteria was counted every predetermined time. Table 2 below shows the test results. The bacteria used are Escherichia coli, Pseudomonas aeruginosa, Salmonella, Staphylococcus aureus, MRSA (methicillin resistant Stahirococcus aureus, meaning Staphylococcus aureus that has acquired resistance to methicillin (antibiotic name)) Yes, Vibrio parahaemolyticus.

試験液２では、２４時間経過しても菌が生きており、ＭＲＳＡに至っては、４倍に増加しているが、本実施形態のマイナスイオン水である試験液１が注入されたシャーレでは、何れの菌に対しても、６時間を経過した時点で生菌数が０となった。

In the test solution 2, the bacteria are still alive even after 24 hours, and the MRSA has increased by a factor of 4, but in the petri dish into which the test solution 1 that is the negative ion water of this embodiment is injected, For all the bacteria, the number of viable bacteria became 0 when 6 hours passed.

From this, it was demonstrated that the negative ion water of this embodiment can stably suppress the generation of microorganisms and molds for a long period of time.
<Test Example 3 (Acute toxicity test)>
As an acute toxicity test of negative ion water of the present embodiment, a fish toxicity test was conducted for Himedaka. The test conditions are as follows.
Test fish: Himedaka (average body length 3.0 cm, average body weight 0.24 g)
Condition of acclimatization: For 14 days before the test (tap water (pH 7.9) from which residual chlorine was removed by natural standing), water temperature: 23 ± 1 ° C. lighting: bred and acclimatized at 14 hours / day. The mortality rate of the test fish during the conversion period was less than 5%)
Number of fish: 10 fish, water temperature: 23 ± 1 ° C, lighting: 14 hours / day Test vessel: round glass washing tank diluted water: tap water from which residual chlorine has been removed by natural standing (pH 7.9)
Preparation of test water: The negative ion water of this embodiment was added to dilution water, and 1,000-100,000 ppm test water was prepared.
Measurement: The behavior of the test fish in each test water was observed, and the number of deaths after 24, 48, 72 and 96 hours was recorded.
Results: No deaths occurred in any test water. Therefore, the 0% mortality rate is 100,000 mg / l or more, and it is 218,341 g / l or more per body weight. Therefore, it is proved that the negative ion water of the present embodiment is not substantially toxic. It was.
<Test Example 4 (Detergency Test)>
Test water 1 is negative ion water of the present embodiment, test liquid 2 is redox water manufactured by Redox Co., Ltd., trade name: redox water type IS ′ generator), and test liquid 3 is manufactured by Amano Co., Ltd. Product name: Electrolytic washing water purification device Σ3000 is negative ion water. In addition, using a commercially available kitchen detergent mainly composed of a surfactant as a standard product, the cleaning power of these test solutions is determined according to JIS K3362 (Synthetic detergent test method) 7.2 (Synthetic detergent for kitchen). Comparative evaluation was made according to the above. Specifically, after washing for 3 minutes using a detergency tester (rotation speed 250 ± 10 rpm) equipped with a glass piece to which standard dirt (a mixture of beef tallow, soybean oil, monoolein and oil red) is attached Rinse for 1 minute, then air dry at room temperature for 1 day. The glass piece was immersed in a chloroform solution, and evaluation was performed by visually comparing the degree of redness (degree of dirt removal) of the chloroform solution with a standard product.

表３に示すように、試験液２及び３は、クロロホルム溶液の色が標準液より濃く、洗浄力が劣ることが判明したが、本実施形態のマイナスイオン水である試験液１は標準液と殆ど差がない洗浄力を有することが判明した。
＜試験例５（帯電防止効果）＞
ＪＩＳ Ｌ０２１７に規定する洗い方番号１０３に準じて、洗い−濯ぎ−脱水−自然乾燥を行った試料（ポリエステル１００％）に、試料水（試験液１は本実施形態のマイナスイオン水、試験液２は、レドックス株式会社製、商品名：レドックスウォータータイプＩＳ‘生成機）というマイナスイオン水で、試験液３は、アマノ株式会社製、商品名：電解洗浄水精製装置Σ３０００というマイナスイオン水、試験液４は純水である。）を２０ｍｌ／ｍ²吹きつけて、１時間熱風（７０℃）乾燥した。その後２４時間調湿し（温度２０±５℃、相対湿度４０％以下）、ポリエチレン袋に封入し試料の調製を行った。試料を回転式摩擦装置に入れ、６０±１０℃のドラムで１５分間運転した。絶縁性手袋でドラムより試料を取り出し、帯電電荷量測定装置のファラデーゲージに投入し、電位差計の数値Ｖ（ｖ）を読み、帯電電荷量Ｑ（Ｃ）を求めた。なお、試料に帯電している静電気は、１回ごとに自己放電式除電器を用いて除電した。

As shown in Table 3, the test solutions 2 and 3 were found to have a chloroform solution with a darker color than the standard solution and inferior in detergency. However, the test solution 1 which is negative ion water of this embodiment is a standard solution. It was found to have a detergency with little difference.
<Test Example 5 (Antistatic Effect)>
In accordance with the washing method number 103 defined in JIS L0217, a sample water (100% polyester) subjected to washing-rinsing-dehydration-natural drying was added to sample water (test solution 1 is negative ion water of this embodiment, test solution 2). Is a negative ion water called “Redox Water Type IS ′ generator” manufactured by Redox Co., Ltd., and test solution 3 is a negative ion water called “Ammano Co., Ltd., product name: Electrolytic Cleaning Water Purifier Σ3000”, a test solution. 4 is pure water. ) Was sprayed at 20 ml / m ^{2 and} dried with hot air (70 ° C.) for 1 hour. The sample was then conditioned for 24 hours (temperature 20 ± 5 ° C., relative humidity 40% or less) and enclosed in a polyethylene bag. The sample was placed in a rotary friction device and run on a drum at 60 ± 10 ° C. for 15 minutes. A sample was taken out of the drum with an insulating glove, put into a Faraday gauge of a charged charge measuring device, and a numerical value V (v) of a potentiometer was read to obtain a charged charge amount Q (C). The static electricity charged on the sample was removed by using a self-discharge type static eliminator every time.

この表４に示されている通り、本実施形態のマイナスイオン水は、他の試験液に比べて、帯電防止効果において優れていることが判明した。
＜試験例６（消臭効果）＞
試料水（試験液１は本実施形態のマイナスイオン水、試験液２は、レドックス株式会社製、商品名：レドックスウォータータイプＩＳ‘生成機）というマイナスイオン水で、試験液３は、アマノ株式会社製、商品名：電解洗浄水精製装置Σ３０００というマイナスイオン水）１ｇを容器に秤取し、密栓して、メチルメルカプタン５０μｌをガスタイトシリンジを用いて密栓した容器に注入し、振盪しながら室温で放置した。経時的に容器内のガスをガスクロマトグラムへ注入した。同様の方法でブランクテストを行い、得られたガスクロマトグラム上のピーク高さを測定し、ブランクを本実施形態のマイナスイオン水として試料の各測定時刻における残存率を測定した。

As shown in Table 4, it was found that the negative ion water of this embodiment is superior in antistatic effect compared to other test solutions.
<Test Example 6 (deodorizing effect)>
The sample water is negative ion water (test solution 1 is negative ion water of this embodiment, test solution 2 is manufactured by Redox Co., Ltd., trade name: redox water type IS 'generator), and test solution 3 is Amano Co., Ltd. Product, product name: electrolyzed water purification apparatus Σ3000 negative ion water) 1 g is weighed in a container, sealed, and 50 μl of methyl mercaptan is injected into the sealed container using a gas tight syringe and shaken at room temperature. I left it alone. Over time, the gas in the container was injected into the gas chromatogram. A blank test was performed by the same method, the peak height on the obtained gas chromatogram was measured, and the residual rate at each measurement time of the sample was measured using the blank as the negative ion water of this embodiment.

この表５に示されている通り、本実施形態のマイナスイオン水は、他の試験液に比べて消臭効果において極めて優れていることが判明した。
＜試験例７（安全性）＞
この実験では、マイナスイオン水を直接肌に触れさせる実験を行った。

As shown in Table 5, it was found that the negative ion water of the present embodiment was extremely excellent in deodorizing effect compared to other test solutions.
<Test Example 7 (Safety)>
In this experiment, an experiment was conducted in which negative ion water was directly in contact with the skin.

As a result, the negative ion water had a pH of 12 before touching human skin, but at the moment of touching the skin, the pH dropped to 5.6, which is a safe level for touching the human body.
Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and can of course be implemented in various modes without departing from the gist of the present invention. is there.

It is a schematic diagram which shows each process of the washing | cleaning system 1 which performs the manufacturing method of the metal material 90. FIG. It is a schematic diagram which shows each process of the washing | cleaning system 3 which performs the manufacturing method of the metal material 90. FIG. It is a schematic diagram for demonstrating the manufacturing process of the negative ion water of this embodiment. It is a schematic diagram which shows each process of the washing | cleaning system which performs the manufacturing method of the conventional aluminum photoreceptor drum. It is a schematic diagram which shows each process of the washing | cleaning system which performs the manufacturing method of the conventional aluminum pipe.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cleaning system, 10 ... Cleaning tank, 10a ... Ultrasonic oscillator, 10b ... Negative ion water, 10c ... Maintenance device, 12 ... Cleaning tank, 12a ... Ultrasonic oscillator, 14 ... Cleaning tank, 14b ... Pure water, 16 ... Cleaning tank, 16a ... Hot air device 3 ... Cleaning system, 30 ... Cleaning tank, 30a ... Ultrasonic oscillator, 30b ... Negative ion water, 30c ... Maintenance device, 32 ... Cleaning tank, 32a ... Shower device, 34 ... Cleaning tank, 34b ... Pure water, 36 ... Washing tank, 36a ... Hot air device 90 ... Metal material, 90a ... Aluminum photosensitive drum, 90b ... Aluminum pipe, 98 ... Pallet, 99 ... Crane

Claims (5)

In the method for producing a metallic material, in which the dirty metal material is washed to produce the clean metal material,
In the ion washing tank in which the negative ion water obtained by electrolyzing pure water having a dissolved oxygen amount of 1 ppm or less and pressurizing at a pressure of 4 kg / cm ² or more is stored in the negative ion water. Ion water cleaning step of immersing a metal material and cleaning the metal material;
In a first cleaning tank in which pure water is stored, a rinse cleaning step of immersing the metal material in the pure water and cleaning the metal material;
A method for producing a metallic material, comprising: performing a drying step of drying moisture adhering to the metallic material. In the manufacturing method of the metal material described in Claim 1,
In the drying step,
A first drying step of immersing and pulling up the metallic material in a second cleaning tank in which heated pure water is stored, and evaporating the pure water from the metallic material;
A method for producing a metal material, comprising performing a second drying step of blowing hot air on the metal material. In the manufacturing method of the metal material described in Claim 1,
Performing a spray cleaning step of spraying water on the metal material to clean the metal material between the ion water cleaning step and the rinse cleaning step;
As the drying step, a second drying step of blowing hot air on the metal material is executed. In the manufacturing method of the metal material in any one of Claims 1-3,
The ion cleaning tank includes ultrasonic oscillation means that vibrates the negative ion water stored in the ion cleaning tank using ultrasonic waves,
In the ion water cleaning step, the metal material is cleaned by immersing the metal material in the negative ion water in the ion cleaning tank that is vibrated by the ultrasonic oscillation means. Material manufacturing method. In the manufacturing method of the metal material as described in any one of Claims 1-4,
The ion cleaning layer includes a maintaining means for maintaining the hydrogen ion concentration of the negative ion water stored in the ion cleaning tank,
In the ion water cleaning step, the metal material is cleaned by immersing the metal material in the negative ion water whose hydrogen ion concentration is maintained by the maintaining means.

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