TW201900935A - Electrogalvanizing device and electroplating method - Google Patents

Abstract

Provided is an electrogalvanizing apparatus, which is possible to greatly reduce the amount of water used for washing a product to be plated. An electrogalvanizing apparatus (1) for performing a treatment of forming a galvanized coating on a surface of the product to be plated includes: a pretreatment unit (2) that performs a degreasing treatment on a surface of the product to be plated and a bottom layer adjustment; and a plating treatment unit (3) for performing a plating treatment by using plating solution on a surface of the product to be plated which has been subjected to a degreasing treatment and a bottom layer adjustment; the pretreatment unit (2) performs bottom layer adjustment of the surface of the product to be plated by spraying an abrasive onto the surface of the product to be plated.

Description

Galvanizing device and galvanizing method

The present invention relates to a technology of an electro-galvanizing device and an electro-galvanizing method for forming a galvanized coating on a surface of an article to be plated.

Conventionally, technologies related to an electrogalvanizing apparatus and an electrogalvanizing method for forming a galvanized coating or a galvanized alloy coating on the surface of a to-be-plated product are known (see Patent Document 1). The aforementioned galvanizing apparatus includes a pre-treatment section and a plating treatment section.

In the aforementioned electro-galvanizing apparatus, the pre-treatment section performs a treatment (degreasing treatment) for removing grease on the surface of the plated product by alkaline degreasing, etc., and an acid-washing or electrolytic degreasing process using hydrochloric acid or the like Treatment of oxide removal on the surface of the plated product (bottom layer adjustment), etc. Further, in the aforementioned electrogalvanizing apparatus, the electroplating treatment section is constituted by, for example, a drum-type electrogalvanizing apparatus, and in a state where the to-be-plated product subjected to degreasing treatment and bottom layer adjustment is stored in a drum, the The surface is plated with a plating solution.

[Patent Document 1] Japanese Patent Laid-Open No. 2002-4080

[Problems to be solved by the invention]

However, in the pre-treatment section of the aforementioned electro-galvanizing device, after the degreasing treatment, the adjustment of the bottom layer, and the like, it is necessary to separately perform the treatment of washing the plated product with water. As described above, in the aforementioned electro-galvanizing device, in the pre-treatment section, when a treatment is performed to remove grease, oxides, and the like on the surface of the plated product, there is a large amount of water for washing the plated product and a large amount of drainage ( For example, hundreds of liters per hour).

The present invention has been developed in view of the above circumstances, and an object thereof is to provide a galvanized device capable of greatly reducing the drainage amount of water used in the washing of a plated product. [Technical means to solve the problem]

The problem to be solved by the present invention is as described above, and the means for solving the problem will be described next.

That is, the electrogalvanizing apparatus of claim 1 is an electrogalvanizing apparatus that performs a process of forming a galvanized coating on the surface of the object to be plated, and includes a degreasing process for the surface of the object to be plated and a pre-treatment unit for adjusting the bottom layer And an electroplating treatment section for applying a plating solution to the surface of the object to be plated after performing the degreasing treatment and the bottom layer adjustment, the pretreatment portion is made by spraying an abrasive on the surface of the object to be plated. The bottom layer adjustment of the surface of the plated product is performed.

In claim 2, the pre-processing section performs a degreasing treatment on the surface of the object to be plated using a predetermined solvent.

In claim 3, the pre-processing unit performs a degreasing treatment by dissolving the grease on the surface of the object to be plated with an organic solvent.

In claim 4, a water treatment unit is provided. The water treatment unit is configured to separate the water used for washing the plated product in the plating treatment unit into water and waste, and use the separated water as Water for washing the object to be plated is supplied to the plating treatment section.

The electrogalvanizing method of claim 5 is a galvanizing method for forming a galvanized coating on the surface of the object to be plated, and includes a step of performing a degreasing treatment on the surface of the object to be plated, and a surface of the object to be plated. The step of adjusting the bottom layer and the step of performing an electroplating treatment on the surface of the plated product subjected to the aforementioned degreasing treatment and the adjustment of the bottom layer using a plating solution. The step of adjusting the bottom layer of the surface of the plated product is performed by An abrasive is sprayed on the surface of the object to be plated after the degreasing treatment is performed to adjust the bottom layer of the surface of the object to be plated.

In claim 6, the step of performing a degreasing treatment on the surface of the plated product is performing a degreasing treatment on the surface of the plated product using a predetermined solvent. [Effect of the invention]

As the effects of the present invention, the following effects can be exhibited. That is, according to the present invention, it is possible to greatly reduce the drainage amount of water used in washing the object to be plated.

Next, the galvanizing apparatus 1 and the galvanizing method according to the embodiments of the present invention will be described with reference to FIGS. 1 to 4.

The galvanizing apparatus 1 (galvanizing method) is a process for forming a galvanized film on the surface of an object to be plated. In the galvanizing apparatus 1 (galvanizing method), the process of forming a galvanized film on the surface of the object to be plated is not limited to the process of forming a galvanized film on the surface of the object to be plated with zinc, and also includes the use of a zinc alloy A process of forming a galvanized coating (galvanized alloy coating) on the surface of the object to be plated. The product to be plated is a predetermined member made of a metal material containing iron. The articles to be galvanized by the galvanizing apparatus 1 include metal members for construction (for example, metal screws for construction, or metal joint members for construction). As shown in FIG. 1, the galvanizing apparatus 1 includes a pre-treatment section 2, a plating treatment section 3, a post-treatment section 4, a water treatment section 5, and an intermediate pit 6.

The pre-treatment section 2 performs a degreasing treatment and a bottom layer adjustment for removing grease and oxides on the surface of the article to be plated.氧化物 An oxide (oxidized film) is formed on the surface of the object to be plated (for example, an object to be plated in a plating factory) before the pretreatment is performed in the pretreatment unit 2, and rust and the like are attached. In addition, the surface of the article to be plated before the treatment is performed in the pretreatment section 2 is coated with grease for lubrication and rust prevention. The pre-processing unit 2 includes a degreasing processing unit 7 and a bottom layer adjusting unit 8.

The degreasing treatment section 7 of the pretreatment section 2 is a treatment (degreasing treatment) for removing grease from the surface of the object to be plated using a predetermined solvent. The degreasing treatment section 7 is a non-aqueous degreasing device, and performs degreasing treatment by dissolving fats and oils on the surface of the object to be plated with an organic solvent. The organic solvent used in the degreasing treatment section 7 includes, for example, a chlorine-based solvent such as methylene chloride, trichloroethylene, tetrachloroethylene, or other known hydrocarbon-based, ester-based, alcohol-based, fluorine-based, bromine Solvent.

The bottom layer adjustment section 8 of the pre-processing section 2 performs the bottom layer adjustment of the surface of the object to be plated after the degreasing treatment is performed. The bottom layer adjusting portion 8 is a shot blasting device (for example, a sand blasting device, a bead blasting device, etc.), which sprays abrasives composed of silicon dioxide, alumina, steel balls, or steel grit, etc. The oxide and rust on the surface of the plated product are removed to adjust the bottom layer of the surface of the plated product.

The plating treatment section 3 performs a plating treatment on a surface of a to-be-plated product subjected to degreasing treatment and underlayer adjustment in the pretreatment section 2 using a plating solution. The hafnium plating solution is made of, for example, a glossing agent, ammonium chloride, potassium chloride, zinc chloride, or the like. The electroplating treatment section 3 is a drum-type galvanizing device, and includes an upstream tank 10, a plating tank 11, a recovery tank 12, and a water washing tank 13. The plating processing unit 3 moves the rollers containing the articles to be plated from the upstream side to the downstream side in the order of the upstream tank 10, the plating tank 11, the recovery tank 12, and the water washing tank 13 in each order in a predetermined time. Perform various processing.

The upstream tank 10 of the electroplating treatment section 3 is used to clean the dust adhered to the surface of the article to be plated (the article to be plated after removing grease, oxides, and the like in the pretreatment section 2). The upstream tank 10 is composed of a plurality of (two) tanks for storing and storing water.滚筒 When the drum moves from the upstream side to the downstream side and is positioned above each upstream tank 10, it moves downward and is disposed in the upstream tank 10. Then, the drum is rotated in a state of being disposed in the upstream tank 10, whereby the to-be-plated product in the drum is washed with water. The upstream groove 10 can also be constituted by one groove.上游 In addition, the upstream tank 10 may be configured not to wash the plated product with water, but to treat the surface of the plated product with a surfactant such as dilute hydrochloric acid or dilute nitric acid. In addition, the upstream tank 10 may be configured so that the surface of the object to be plated is treated with a surfactant after the object to be plated is washed with water.

The plating tank 11 of the plating processing section 3 performs a plating process on the articles to be plated that have been washed in the upstream tank 10. The plating tank 11 is composed of a plurality of (10) tanks for storing a plating solution.滚筒 When the drum moves from the upstream side to the downstream side and is positioned above each plating tank 11, it moves downward and is disposed in the plating tank 11. Then, the drum is rotated in a state of being disposed in the plating tank 11, whereby the plated product in the drum is subjected to a plating treatment.

The recovery tank 12 of the plating processing unit 3 collects the plating solution adhered to the to-be-plated product after the plating processing is performed in the plating tank 11. When the drum moves from the upstream side to the downstream side and is located above the recovery tank 12, it moves downward and is disposed in the recovery tank 12. Then, in a state where a roller is disposed in the recovery tank 12, the axis of the roller is inclined at a predetermined angle (for example, 40 degrees), and the plating solution adhered to the object to be plated is recovered. The recovered plating solution is returned to the plating tank 11 through the return pipe 20. The return pipe 20 is connected to the recovery tank 12 and the plating tank 11. The krypton recovery tank 12 can also be configured to collect a plating solution adhered to a to-be-plated product by suction using a suction device, rotating a drum, or the like.

The water washing tank 13 of the plating treatment section 3 cleans the plating solution attached to the object to be plated without being recovered by the recovery tank 12. The water washing tank 13 is composed of a plurality of (for example, three) tanks (counter-current multi-stage water washing) for storing and storing water. (2) When the drum moves from the upstream side to the downstream side and is positioned above each of the water washing tanks 13, the drum moves downward and is arranged in the water washing tanks 13. Then, the drum is rotated in a state of being disposed in the water washing tank 13, thereby washing the to-be-plated product in the drum with water. The most downstream side of the water washing tank 13 can be configured to store hot water (hot water washing tank) in order to improve the cleaning effect of the plated product on the downstream side of the water washing tank 13 and shorten the drying time.

The post-processing unit 4 is a process (for example, chromic acid treatment) for removing the object to be plated after the electroplating process in the electroplating process part 3 from the drum, in order to improve the corrosion resistance of the zinc metal surface of the object to be plated, Or a process (for example, a phosphoric acid process) etc. for improving the adhesiveness of the coating film of this to-be-plated object in the coating process performed later.

The intermediate pit 6 is formed under the floor where the electrogalvanizing apparatus 1 is arranged. The intermediate pit 6 collects and temporarily stores water (water used for washing the plated product) stored in the upstream tank 10 and the water washing tank 13 of the plating treatment section 3. In addition, the middle pit 6 is the water stored in the water washing tank for washing after the chromic acid treatment is performed in the post-processing section 4, or the water stored in the water washing tank for washing after the phosphoric acid treatment ( Water used for cleaning the plated product is recovered and temporarily stored. The water accumulated in the upstream tank 10 and the water washing tank 13 of the plating treatment section 3 is recovered by the intermediate pit 6 through the recovery pipe 21. The recovery pipe 21 is connected to the upstream tank 10, the water washing tank 13, and the intermediate pit 6 of the plating treatment section 3. The water stored in the water washing tank for the washing after the chromic acid treatment is performed in the post-treatment section 4 or the water stored in the water washing tank for the washing after the phosphoric acid treatment is performed is passed through the recovery pipe 22 to the middle. Pit 6 is recycled. The recovery pipe 22 is connected to a water washing tank for washing after the chromic acid treatment is performed in the post-treatment section 4, or a water washing tank for washing after the phosphoric acid treatment is performed, and the intermediate pit 6.

The water treatment unit 5 performs the treatment of the water (water used for washing the plated product) stored in the intermediate pit 6. The water treatment unit 5 includes a recovery water tank 30, a distillation device 31 (a reduced-pressure dehydration treatment device), and a regeneration water tank 32.

The water accumulated in the intermediate pit 6 is recovered by the recovery water tank 30 of the water treatment unit 5 through the recovery pipe 23. The recovery pipe 23 is connected to the intermediate pit 6 and the water treatment unit 5. The water treatment unit 5 is configured to distill the water in the recovered water tank 30 (water used for washing the plated product) in the distillation device 31 under reduced pressure in a vacuum to distill the boiling point and separate it into water. (Recycled water), solid waste after dehydration. In the water treatment unit 5, the water separated in the distillation device 31 is stored in the reclaimed water tank 32, and the dehydrated solid waste is discarded.

The water stored in the reclaimed water tank 32 of the water treatment section 5 is supplied to the upstream tank 10 or the water washing tank 13 of the plating treatment section 3 through the supply pipe 24. The supply pipe 24 is connected to the upstream tank 10 or the water washing tank 13 of the plating treatment section 3 and the regeneration water tank 32 of the water treatment section 5. In addition, the water stored in the reclaimed water tank 32 of the water treatment unit 5 is used for washing the to-be-plated product, and is washed with water after the chromic acid treatment is supplied to the post-treatment unit 4 through the supply pipe 24. Tank or water washing tank for washing after phosphoric acid treatment. The supply pipe 24 is connected to a water washing tank for washing after the chromic acid treatment in the post-processing section 4 or a water washing tank for washing after the phosphoric acid treatment.供给 A filter 33 (for example, an activated carbon filter) is provided in the supply pipe 24, and water accumulated in the middle pit 6 is filtered by the filter 33 to circulate impurities.

Next, a series of operations of the process of forming a galvanized film on the surface of a to-be-plated article in the galvanizing apparatus 1 is demonstrated.

As shown in FIG. 2, in the galvanizing apparatus 1, the degreasing treatment section 7 of the pretreatment section 2 performs a process (degreasing treatment) for removing grease on the surface of the object to be plated (step S1). At this time, in the degreasing treatment section 7 of the pretreatment section 2, a predetermined solvent is used to perform a degreasing treatment on the surface of the object to be plated. For example, in the degreasing treatment section 7 of the pretreatment section 2, an organic solvent is used to dissolve the grease on the surface of the object to be plated, thereby performing a degreasing treatment.进行 After the step of removing grease from the surface of the object to be plated is performed in the degreasing treatment section 7 of the pretreatment section 2, the process proceeds to step S2.

Next, in the electro-galvanizing apparatus 1, the bottom layer adjustment section 8 of the pre-processing section 2 performs the bottom layer adjustment of the surface of the object to be plated after the degreasing treatment is performed (step S2). At this time, in the underlayer adjusting portion 8, abrasives are sprayed to remove oxides, rust, and the like on the surface of the object to be plated, thereby adjusting the underlayer of the surface of the object to be plated. (1) After performing the step of adjusting the surface of the object to be plated in the bottom layer adjusting section 8 of the pre-processing section 2, the process proceeds to step S3.

Next, in the galvanizing apparatus 1, in the plating processing part 3, the surface of the to-be-plated object is electroplated using the electroplating solution (step S3). (2) In the electroplating treatment unit 3, after performing the step of performing electroplating treatment on the surface of the object to be plated using a plating solution, the process proceeds to step S4.

Next, in the galvanizing apparatus 1, in the post-processing section 4, a treatment is performed to improve the corrosion resistance of the zinc metal surface of the object to be plated, or a coating film is provided to the object to be plated in a subsequent coating process. Processing for improving the adhesion (step S4). In the electro-galvanizing apparatus 1, in the post-processing section 4, a treatment is performed to improve the corrosion resistance of the zinc metal surface of the object to be plated, or to make the coating film adherence of the object to be plated in a subsequent coating process. After the steps such as the raising process, the operation is terminated. In this way, the galvanizing apparatus 1 performs a process of forming a galvanized film on the surface of the object to be plated.

As described above, before the electroplating apparatus 1 (galvanizing method), the pretreatment section 2 (the degreasing treatment section 7 of the pretreatment section 2) uses a predetermined solvent to perform degreasing treatment on the surface of the object to be plated. In the pretreatment section 2, Water washing after alkaline degreasing and water washing after electrolytic degreasing are not required, and the surface is treated without oil and grease to remove the grease. Therefore, in the galvanizing apparatus 1 (galvanizing method), when the process of forming a galvanized film on the surface of the object to be plated is performed, the drainage amount of water used in the washing of the object to be plated can be greatly reduced (from each Hundreds of liters per hour were reduced to tens of liters). Therefore, in the electrogalvanizing apparatus 1 (electrolytic galvanization method), water drainage equipment used in the washing after alkaline degreasing, and water drainage equipment used in the washing after electrolytic degreasing are not required. The device can adopt an inexpensive construction.

As described above, before the galvanizing apparatus 1 (galvanizing method), the pre-treatment section 2 (the degreasing treatment section 7 of the pre-treatment section 2) uses an organic solvent to dissolve the grease on the surface of the plated product to perform a degreasing treatment. In Part 2, water washing after alkaline degreasing and water washing after electrolytic degreasing are not required, and the treatment for removing grease from the surface of the plated product is performed without drainage. Therefore, in the galvanizing apparatus 1 (galvanizing method), when the process of forming a galvanized film on the surface of the object to be plated is performed, the drainage amount of water used for washing the object to be plated can be greatly reduced (from each Hundreds of liters per hour were reduced to tens of liters). Therefore, in the electro-galvanizing device 1 (electro-galvanizing method), water drainage equipment used in water washing after alkaline degreasing, and water drainage equipment used in water washing after electrolytic degreasing are not required. The device can adopt an inexpensive construction.

As described above, before the galvanizing apparatus 1 (galvanizing method), the pre-treatment section 2 (the bottom layer adjustment section 8 of the pre-treatment section 2) sprays abrasives on the surface of the plated product after the degreasing treatment to perform the plated product. In the pre-treatment section 2, the pre-processing section 2 does not require water washing after pickling with hydrochloric acid or the like, but performs a treatment for removing oxides on the surface of the plated product in a non-draining manner. Therefore, in the galvanizing apparatus 1 (galvanizing method), when the process of forming a galvanized film on the surface of the object to be plated is performed, the drainage amount of water used for washing the object to be plated can be greatly reduced (from each Hundreds of liters per hour were reduced to tens of liters). Therefore, in the galvanizing apparatus 1 (galvanizing method), the drainage equipment for water used in the water washing after pickling with hydrochloric acid or the like is not necessary, and the drainage equipment can have an inexpensive structure.

As described above, before the electroplating apparatus 1 (galvanizing method), the pretreatment section 2 (the degreasing treatment section 7 and the bottom layer adjustment section 8 of the pretreatment section 2) dissolves the grease on the surface of the plated product with an organic solvent to perform degreasing. Treatment, spraying abrasives on the surface of the plated product after degreasing treatment to adjust the bottom layer of the surface of the plated product. In the pretreatment section 2, water washing after alkaline degreasing, acid washing with hydrochloric acid, etc. Water washing and electrolytic washing after degreasing are not required, and the surface of the product to be plated is treated with grease and oxides without drainage. Therefore, in the galvanizing apparatus 1 (galvanizing method), when the process of forming a galvanized film on the surface of the object to be plated is performed, the drainage amount of water used for washing the object to be plated can be greatly reduced (from each Hundreds of liters per hour were reduced to tens of liters). Therefore, in the electro-galvanizing apparatus 1 (electro-galvanizing method), water drainage equipment used in water washing after alkaline degreasing, water drainage equipment used in water washing after electrolytic degreasing, and hydrochloric acid are used. The water drainage equipment used in the water washing after the pickling is not required, and the drainage equipment can adopt an inexpensive structure. Therefore, in the electrogalvanizing apparatus 1 (electrogalvanization method), in addition to greatly reducing the overall drainage volume, it contains alkaline degreasing agents, emulsified oils and fats, hydrochloric acid used for pickling, and metals dissolved therein. The treatment of water is unnecessary, so that the water treatment unit 5 can be miniaturized.

As described above, before the galvanizing apparatus 1 (galvanizing method), the pre-treatment section 2 (the bottom layer adjustment section 8 of the pre-treatment section) sprays abrasives on the surface of the plated product after the degreasing treatment to perform the plated product. The bottom layer of the surface is adjusted instead of being acid-washed. Therefore, the plating bath 11 (the plating bath 11 or the plating solution in the plating bath 11) of the plating treatment section 3 can be in a state not contaminated by iron ions and the like. That is, in the galvanizing apparatus 1 (galvanizing method), since the pre-treatment section 2 (the bottom-layer adjustment section 8 of the pre-treatment section) is not acid-washed, it is not necessary to input a pH adjuster (ammonia, hydrogen peroxide). Etc.) to remove iron ions from the plating solution of the plating tank 11. In addition, in the galvanizing apparatus 1 (galvanizing method), since the pretreatment section 2 (the bottom layer adjustment section 8 of the pretreatment section) is not pickled, the occurrence of odor in the work environment can be suppressed and the work environment can be suppressed. It can also prevent corrosion of equipment, buildings, etc. by an acid.

As described above, before the galvanizing apparatus 1 (galvanizing method), the pretreatment section 2 (the degreasing treatment section 7 of the pretreatment section) uses an organic solvent to dissolve the grease on the surface of the plated product, because the degreasing treatment is not performed. Electrolytic degreasing can reduce the risk of hydrogen embrittlement of articles after plating.

In the same manner as above, in the water treatment section 5 of the galvanizing apparatus 1 (galvanization method), the water used for washing the plated product in the electroplating treatment section 3 is distilled and separated into water (reclaimed water) and solid. Waste, and the separated water (recycled water) is supplied to the upstream tank 10 or the water washing tank 13 of the plating treatment section 3 as water for washing the plated product. Therefore, the water in the plating treatment section 3 can be cleaned. The water used for washing the plated product is reused, and it is not necessary to treat the water used for washing the plated product to drain (drain). Therefore, in the electrogalvanizing apparatus 1 (galvanizing method), it is not necessary to introduce expensive drainage treatment equipment in order to meet the drainage standards for water used for cleaning of plated products, which are expected to become stricter.

As described above, in the water treatment section 5 of the galvanizing apparatus 1 (galvanizing method), the water used for washing the plated product in the post-treatment section 4 is distilled and separated into water (reclaimed water). And solid waste, and this separated (recycled water) is supplied to the post-processing section 4 as water for washing the plated product, and is used in a water washing tank for washing after chromic acid treatment or for phosphoric acid treatment. The washing water washing tank reuses the water used in the washing of the plated product in the post-processing unit 4 without draining the water used in the washing of the plated product. (drain). Therefore, in the electrogalvanizing apparatus 1 (galvanizing method), it is not necessary to introduce expensive drainage treatment equipment in order to meet the drainage standards for water used for cleaning of plated products, which are expected to become stricter.

As shown in FIG. 3, the galvanizing apparatus 1 may be configured to include a pre-treatment section 2, a plating treatment section 3, a post-treatment section 4, and a water treatment section 5, but does not include the intermediate pit 6.

The water treatment unit 5 is provided with a plurality of recovery water tanks 30 corresponding to a tank (a component of the recovered water) for storing the recovered water. The water treatment unit 5 is provided with a recovery water tank 30 for each tank (a component of the recovered water) for storing the recovered water. The water treatment section 5 includes a recovery water tank 30 a for recovering water stored in the upstream tank 10 of the plating treatment section 3, a recovery water tank 30 b for recovering water stored in the washing tank 13 of the plating treatment section 3, and In a recovery water tank 30 c that collects water stored in the water washing tank of the post-processing unit 4.

The water accumulated in the upstream tank 10 of the plating treatment section 3 is recovered by the recovery water tank 30 a of the water treatment section 5 through the recovery pipe 25. The recovery pipe 25 is a recovery water tank 30 a connected to the upstream tank 10 of the plating treatment section 3 and the water treatment section 5. (2) The water accumulated in the water washing tank 13 of the plating treatment section 3 is recovered by the recovery water tank 30b of the water treatment section 5 through the recovery pipe 26. The recovery pipe 26 is connected to the water washing tank 13 of the plating treatment section 3 and the recovery water tank 30 b of the water treatment section 5. The water accumulated in the water washing tank used for washing after the chromic acid treatment in the post-treatment section 4 or the water stored in the water washing tank used for washing after the phosphoric acid treatment is recovered by the water treatment section through the recovery pipe 27 The water tank 30c is recovered. The recovery pipe 27 is connected to a water washing tank for washing after the chromic acid treatment in the post-processing unit 4 or a water washing tank for washing after the phosphoric acid treatment, and a recovery water tank 30 c in the water treatment unit 5.

In this way, the water treatment unit 5 is provided with a recovery water tank 30 (recovery water tanks 30a, 30b, 30c) for each of the tanks (components of the recovered water) for storing the recovered water, as compared with a plurality of water tanks. The process of recovering water to a single recovery water tank 30 can easily and reliably perform the water in the recovery water tank 30 (water used for washing the plated product) in the distillation device 31 under vacuum to reduce the boiling point. Distillation in a reduced state to separate water (recycled water) and dehydrated solid waste.

The water treatment section 5 of the galvanizing device 1 may be configured such that the water recovered and used in the electroplating treatment section 3 and the water recovered and used in the post-treatment section 4 are not used by the common distillation device 31, the regeneration water tank 32, Or the filter 33 or the like performs the treatment, but the treatment to be the recycled water is performed individually. As shown in FIG. 4, the water treatment unit 5 includes: recovery water tanks 30 a, 30 b, and 30 c; distillation apparatuses 31 a and 31 c; regeneration water tanks 32 a and 32 c; and filters 33 a and 33 c.

The water accumulated in the upstream tank 10 of the electroplating treatment section 3 is recovered by the recovery water tank 30a of the water treatment section 5; the water accumulated in the water washing tank 13 of the electroplating treatment section 3 is recovered by the recovery water tank 30b of the water treatment section 5 Recovery; The water accumulated in the water washing tank for washing after the chromic acid treatment in the post-processing section 4 or the water accumulated in the water washing tank for washing after the phosphoric acid treatment is collected by the recovery water tank 30c of the water treatment section. The water treatment unit 5 separates water (recycled water) and dehydrated solid waste in the distillation device 31a from the water in the recovered water tanks 30a and 30b (water used for washing the plated product). In the water treatment section 5, the water separated in the distillation device 31a is stored in the reclaimed water tank 32a, and the impurities are filtered by the filter 33a and then supplied to: the upstream tank 10 or the water washing tank 13 of the plating treatment section 3, and the post-treatment section 4 After washing with chromic acid, it is used for washing with water, or after washing with phosphoric acid, it is used for washing with water. In addition, the water treatment unit 5 separates water (recycled water) and dehydrated solid waste in the distillation device 31c in the recovery water tank 30c (water used for washing the plated product). In the water treatment section 5, the water separated in the distillation device 31c is stored in the reclaimed water tank 32c, and the impurities are filtered by the filter 33c and supplied to: the upstream tank 10 or the water washing tank 13 of the plating treatment section 3, and the post-treatment section 4 After washing with chromic acid, it is used for washing with water, or after washing with phosphoric acid, it is used for washing with water.

In this way, the water treatment section 5 separates the water used in the electroplating treatment section 3 and the water used in the post-treatment section 4 in different distillation apparatuses 31a and 31c to separate water (reclaimed water) and dehydration. After the solid waste is removed, the distilled water is stored in different reclaimed water tanks 32a and 32c, and impurities are filtered in different filters 33a and 33c and supplied to the plating processing section 3 or the post-processing section 4, etc. Compared with the water used in the electroplating treatment section 3 and the water used in the post-treatment section 4 are distilled by a distillation device 31, the distilled water is stored in a reclaimed water tank 32 and in a filter In the case where the impurities are filtered in 33, the treatment to be reclaimed water can be easily and reliably performed.

The water treatment unit 5 may be configured to separate the water in the recovered water tanks 30a, 30c into water (recycled water) and dehydrated solid waste in a common distillation apparatus 31 (for example, the distillation apparatus 31a). At this time, the water treatment unit 5 is configured to separate the water in the recovered water tank 30b into water (recycled water) and dehydrated solid waste in another distillation apparatus 31 (for example, the distillation apparatus 31c). In addition, the water treatment unit 5 may be configured to separate the water in the recovered water tanks 30b and 30c into water (recycled water) and dehydrated solid waste in a common distillation device 31 (for example, the distillation device 31a). At this time, the water treatment unit 5 is configured to separate the water in the recovered water tank 30a into water (recycled water) and dehydrated solid waste in another distillation apparatus 31 (for example, the distillation apparatus 31c), or let the water in the recovered water tank 30a It does not pass through the distillation apparatus 31 (distillation apparatus 31c), but flows directly to the filter 33 (filter 33c). According to this configuration, compared with the water used in the upstream tank 10 of the plating processing section 3, the water used in the water washing tank 13 of the plating processing section 3, and the water used in the water washing tank of the post-processing section 4 In a case where the distilled water is distilled by a distillation device 31, the distilled water is stored in a reclaimed water tank 32 and the impurities are filtered in a filter 33, and the treatment to become reclaimed water can be easily and surely performed.

1‧‧‧ Electro-galvanizing device

2‧‧‧Pre-treatment Department

3‧‧‧Plating treatment department

4‧‧‧ Post-processing Department

5‧‧‧Water Treatment Department

6‧‧‧ middle pit

7‧‧‧Degreasing treatment department

8‧‧‧Bottom adjustment department

10‧‧‧ upstream trough

11‧‧‧plating tank

12‧‧‧ Recovery Tank

13‧‧‧washing tank

20‧‧‧ return tube

21, 22, 23‧‧‧ Recovery tube

24‧‧‧Supply tube

30‧‧‧Recycling water tank

31‧‧‧distillation unit

32‧‧‧Recycled water tank

33‧‧‧ Filter

FIG. 1 is a block diagram showing an electro-galvanizing apparatus according to an embodiment of the present invention. Fig. 2 is a flowchart showing the operation of the galvanizing apparatus according to the embodiment of the present invention. FIG. 3 is a block diagram showing an electro-galvanizing apparatus according to an embodiment of the present invention. FIG. 4 is a block diagram showing an electro-galvanizing apparatus according to an embodiment of the present invention.

Claims (6)

An electro-galvanizing device is an electro-galvanizing device that performs a process of forming a galvanized coating on a surface of a to-be-plated product, and includes: (1) a degreasing treatment for the surface of the to-be-plated product and a pre-treatment layer for adjusting the bottom layer; and The degreasing treatment and the surface of the to-be-plated product adjusted by the above-mentioned bottom layer are electroplated with an electroplating solution, and the pre-treatment part is made by spraying an abrasive on the surface of the to-be-plated product. Surface bottom adjustment. The electro-galvanizing apparatus according to claim 1, wherein: 前 the pre-treatment section performs a degreasing treatment on the surface of the object to be plated using a predetermined solvent. The electrogalvanizing apparatus according to claim 1 or claim 2, wherein: 前 the pre-treatment section performs degreasing treatment by dissolving grease on the surface of the plated product with an organic solvent. The electrogalvanizing device according to claim 1 or claim 2, 具备 it has a water treatment section, the water treatment section separates the water used in the electroplating treatment section for washing the plated product into water and discards it The separated water is supplied to the plating treatment section as water for washing the object to be plated. An electro-galvanizing method is an electro-galvanizing method for forming a galvanized coating on the surface of a to-be-plated product, which comprises: a step of performing a degreasing treatment on the surface of the to-be-plated product, and 调整 performing a bottom layer adjustment of the surface of the to-be-plated product And the step of performing an electroplating treatment on the surface of the object to be plated after the aforementioned degreasing treatment and the aforementioned underlayer adjustment, and the step of performing the underlayer adjustment of the surface of the object to be plated An abrasive is sprayed on the surface of the object to be plated after the degreasing treatment to adjust the bottom layer of the surface of the object to be plated. The galvanizing method according to claim 5, wherein the step of performing a degreasing treatment on the surface of the object to be plated uses a predetermined solvent to perform a degreasing treatment on the surface of the object to be plated.