CN112981511A - Anode system with high current efficiency - Google Patents
Anode system with high current efficiency Download PDFInfo
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- CN112981511A CN112981511A CN202110169927.8A CN202110169927A CN112981511A CN 112981511 A CN112981511 A CN 112981511A CN 202110169927 A CN202110169927 A CN 202110169927A CN 112981511 A CN112981511 A CN 112981511A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/10—Electrodes, e.g. composition, counter electrode
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/002—Cell separation, e.g. membranes, diaphragms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
本发明公开了一种电流效率高的阳极系统，包括电镀槽、至少一个阳极液槽、阳极棒以及隔膜；所述阳极液槽设置于电镀槽内；相邻的阳极液槽之间通过连通管连通；所述阳极液槽和电镀槽之间设置有定位装置；所述隔膜设置于阳极液槽侧壁上；所述隔膜为多孔结构，实现电镀液和阳极液离子交换；所述定位装置包括杆体；所述杆体水平设置；所述杆体的一端拆卸式安装在电镀槽的内壁，另一端拆卸式安装在阳极液槽的外壁上。本发明的电流效率高的阳极系统，设备简单，不存在复杂的管路系统，避免管路带来的堵塞问题；相比传统阳极系统，本发明隔膜面积大，电镀时需要的电压小，电流效率高，阳极液不需要冷冻，电镀槽不易变形，保证了电镀槽的使用寿命。
The invention discloses an anode system with high current efficiency, comprising an electroplating tank, at least one anode liquid tank, an anode rod and a diaphragm; the anode liquid tank is arranged in the electroplating tank; adjacent anode liquid tanks are connected by a communication pipe A positioning device is arranged between the anolyte tank and the electroplating tank; the diaphragm is arranged on the side wall of the anolyte tank; A rod body; the rod body is arranged horizontally; one end of the rod body is detachably mounted on the inner wall of the electroplating tank, and the other end is detachably mounted on the outer wall of the anolyte tank. The anode system with high current efficiency of the present invention has simple equipment, no complicated pipeline system, and avoids the blockage problem caused by the pipeline; The efficiency is high, the anolyte does not need to be frozen, and the electroplating tank is not easily deformed, which ensures the service life of the electroplating tank.
Description
Technical Field
The invention relates to the technical field of electroplating equipment, in particular to an anode system with high current efficiency.
Background
The cathode bar sheet and the anode bar of the existing electroplating anode system are both arranged in the same electroplating solution, the anode generates a large amount of oxygen in the electrolytic process, the nascent oxygen has high activity, polyethylene polyamine in the electroplating solution is oxidized to generate cyanide, the formation of carbonate is increased due to the oxidation of organic matters, the current efficiency of the electroplating solution is rapidly reduced due to the generation of carbonate and cyanide, the electroplating solution is seriously polluted and consumed, the heat production is large, only about 50-60% of current is used for electrodeposition, the rest current is consumed for heat production and hydrogen evolution, and meanwhile, a powerful cooling device is needed.
The invention patent publication No. CN105350063A discloses an anode system for plating solution separation, which separates an anode plating solution from a plating solution by a diaphragm, and prevents oxidation of organic compounds in the plating solution by preventing the oxides from dissolving in the plating solution by transporting and discharging the oxides generated at the anode from the anode plating solution. On one hand, each separation system needs to correspond to one liquid inlet pipe and one liquid outlet pipe to realize circulation of anolyte, and as the separation systems are more, pipelines are extremely complex, equipment is very inconvenient to install, disassemble and clean, the complex pipeline system is easy to block, normal processing is influenced, and the quality of an electroplating layer is further influenced; on the other hand, the diaphragm is arranged on the separation system, the area is small, higher voltage is needed during electroplating, the diaphragm is easy to deform, and the service life is shorter.
In addition, because the electroplating solution has high corrosivity, the inner wall of the electroplating bath is adhered with the corrosion-resistant layer to protect the electroplating bath. When the conventional electroplating bath is used, the electroplating bath is easy to deform due to long-term heating, so that a corrosion-resistant layer is cracked, the protection of the electroplating bath is lost, and the service life of the electroplating bath is greatly shortened.
Based on the above statement, how to design an anode system which has simple structure, difficult blockage, high plating bath strength and high current efficiency is the technical problem to be solved by the invention.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the anode system which has simple structure, difficult blockage, high plating bath strength and high current efficiency.
The invention solves the technical problems through the following technical means:
an anode system with high current efficiency comprises an electroplating bath, at least one anode liquid bath, an anode rod and a diaphragm; electroplating solution is filled in the electroplating bath; the anode liquid tank is filled with anode liquid; the anode bar is arranged in the anode liquid tank;
the anode liquid tank is arranged in the electroplating bath; the adjacent anode liquid tanks are communicated through a communicating pipe; a positioning device is arranged between the anode liquid tank and the electroplating bath; the diaphragm is arranged on the side wall of the anode liquid tank; the diaphragm is of a porous structure, so that ion exchange between the electroplating solution and the anolyte is realized;
the positioning device comprises a rod body; the rod body is horizontally arranged; one end of the rod body is detachably mounted on the inner wall of the electroplating bath, and the other end of the rod body is detachably mounted on the outer wall of the anode liquid tank.
As an improvement of the above technical solution, in the anode system with high current efficiency, a tube body is arranged on the side wall of the anode liquid tank in a penetrating manner; two ends of the tube body are respectively communicated with the anode liquid tank and the electroplating bath; the diaphragm is arranged in the tube body, and separates the anolyte from the electroplating solution to realize ion exchange between the electroplating solution and the anolyte; the pipe body comprises a first pipe body and a second pipe body; one end of the first pipe body is provided with an internal thread; one end of the second pipe body is provided with an external thread; the first pipe body and the second pipe body are in threaded connection through matching of internal threads and external threads; the diaphragm is arranged at the joint of the first pipe body and the second pipe body.
As an improvement of the above technical solution, in the anode system with high current efficiency, a first net rack is installed in the first tube; a second net rack is arranged in the second pipe body; the first net rack and the second net rack are both honeycomb-shaped structures; the diaphragm is arranged between the first net rack and the second net rack; the edge of the diaphragm abuts against the inner wall of the first tube.
As an improvement of the above technical solution, the anode system with high current efficiency comprises a rod body including an inner rod and outer rods screwed to both ends of the inner rod; the inner wall of the electroplating bath and the outer wall of the anode liquid tank are both provided with threaded short rods; and the outer rods at the two ends of the inner rod are respectively in threaded connection with the threaded short rod on the inner wall of the electroplating bath and the threaded short rod on the outer wall of the anode liquid tank.
As an improvement of the above technical solution, in the anode system with high current efficiency, a bump is arranged at the bottom of the electroplating bath; the bottom end of the anode liquid tank is provided with a groove; the lug is arranged in the groove.
As an improvement of the technical scheme, the volume of the anode liquid tank of the anode system with high current efficiency is 10-15% of the volume of the electroplating tank.
As an improvement of the above technical solution, in the anode system with high current efficiency, the separator is one of an organic membrane, an inorganic membrane and a porous ceramic membrane.
As an improvement of the technical scheme, the anolyte comprises sodium hydroxide, potassium chloride, silicate, zinc ions, nickel ions and water; the electroplating solution is an alkaline solution or an acidic solution; the electroplating solution is zinc and zinc alloy electroplating solution.
The invention has the advantages that: the anode system with high current efficiency has simple equipment, does not have a complex pipeline system, and avoids the problem of blockage caused by pipelines; compared with the traditional anode system, the invention has the advantages of large diaphragm area, small voltage required during electroplating, high current efficiency, no need of freezing the anode solution, difficult deformation of the electroplating bath and ensured service life of the electroplating bath.
Drawings
FIG. 1 is a schematic view of the structure of an anode system according to the present invention.
FIG. 2 is a schematic view of the connection between the side wall of the plating tank and the anode tank according to the present invention.
FIG. 3 is a schematic view of the connection between the bottom of the plating bath and the anode bath according to the invention.
FIG. 4 is a schematic view of the structure of the plating cell of the present invention.
FIG. 5 is a schematic structural diagram of the anode liquid bath according to the present invention.
Fig. 6 is a schematic structural view of the tube of the present invention.
Fig. 7 is a schematic view of the installation of the diaphragm of the present invention.
Fig. 8 is a schematic structural view of a rod body according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1, referring to the drawings, a current efficient anode system comprising an electroplating bath 1, at least one anode bath 2, an anode rod 3 and a membrane 4; electroplating solution is filled in the electroplating bath 1; the anode liquid tank 2 is filled with anode liquid; the anode bar 3 is arranged in the anode liquid tank 2;
the anode liquid tank 2 is arranged in the electroplating tank 1; the adjacent anode liquid tanks 2 are communicated through a communicating pipe 7; a positioning device is arranged between the anode liquid tank 2 and the electroplating bath 1; the diaphragm 4 is arranged on the side wall of the anode liquid tank 2; the diaphragm 4 is of a porous structure, so that ion exchange between the electroplating solution and the anolyte is realized;
compared with the traditional anode system, the anode system is provided with the anode liquid tank 2, the anode liquid tank 2 is arranged in the electroplating bath 1, and the ion exchange between the anode liquid and the electroplating solution is realized through the diaphragm 4, so that compared with the traditional tubular anode, on one hand, the anode liquid tank has large capacity, can contain more anode liquid, does not need to circulate the anode liquid through a complex pipeline, simplifies the equipment structure, is convenient to install and disassemble, and more importantly, can avoid the blockage problem caused by the complex pipeline, ensures normal processing and production, and avoids the subsequent cleaning problem caused by the pipeline blockage; on the other hand, the diaphragm of the traditional anode system is arranged on the outer wall of the anode tube, the area is smaller, and larger voltage is needed during electroplating;
the positioning device comprises a rod body 5; the rod body 5 is horizontally arranged; one end of the rod body 5 is detachably arranged on the inner wall of the electroplating bath 1, and the other end of the rod body is detachably arranged on the outer wall of the anode liquid tank 2;
the rod body 5 is used for connecting the electroplating bath 1 and the anode liquid tank 2 on one hand, and plays a role in fixing the anode liquid tank 2, so that the anode liquid tank 2 is prevented from position deviation in the electroplating process, and the uniformity of an electroplated layer of a plated part is ensured; more importantly, the rod body is connected between the electroplating bath 1 and the anode liquid tank 2, the side wall of the electroplating bath 1 is tensioned and limited while the anode liquid tank 2 is positioned, the side wall of the electroplating bath 1 is limited to be inwards sunken or outwards protruded, namely, the deformation of the electroplating bath 1 is avoided, an anti-corrosion layer on the inner wall of the electroplating bath 1 is prevented from being damaged due to the deformation of the electroplating bath 1, the protection effect on the electroplating bath 1 is ensured, and the service life of the electroplating bath 1 is further ensured;
on one hand, the diaphragm 4 enables the electroplating solution and the anode solution to carry out ion exchange, thereby realizing the electroplating function; on the other hand, the diaphragm 4 separates the anolyte from the electroplating solution, and the oxide generated by the anode is discharged from the anolyte, so that the oxide generated by the anode can be prevented from entering the electroplating solution, the oxidation of organic compounds in the electroplating solution is avoided, the consumption of heat generation and hydrogen evolution on current is reduced, and the current efficiency is greatly improved;
the anode system with high current efficiency has simple equipment, does not have a complex pipeline system, and avoids the problem of blockage caused by pipelines; compared with the traditional anode system, the invention has the advantages of large diaphragm area, small voltage required during electroplating, high current efficiency, no need of freezing the anode solution, difficult deformation of the electroplating bath and ensured service life of the electroplating bath.
As an improvement of the above technical solution, a pipe body 21 is arranged on the side wall of the anode liquid tank 2 in a penetrating manner; two ends of the tube body 21 are respectively communicated with the anode liquid tank 2 and the electroplating bath 1; the diaphragm 4 is arranged in the pipe body 21 and separates the anolyte from the electroplating solution to realize ion exchange between the electroplating solution and the anolyte; the tube 21 includes a first tube 211 and a second tube 212; one end of the first tube body 211 is provided with an internal thread; an external thread is arranged at one end of the second tube body 212; the first tube body 211 and the second tube body 212 are in threaded connection through matching of internal threads and external threads; the diaphragm 4 is arranged at the joint of the first tube body 211 and the second tube body 212;
the tube body 21 is used for installing the diaphragm 4, and compared with the traditional diaphragm which is attached to the outer wall of the anode tube, the unique installation structure facilitates the installation of the diaphragm 4 and further facilitates the replacement of the diaphragm 4; more importantly, the diaphragm mounting position is easier to seal, and the mutual leakage between the electroplating solution and the anolyte is avoided; the tube body 21 is formed by connecting the first tube body 211 and the second tube body 212 in a threaded manner, so that the assembly and disassembly are convenient, and the diaphragm 4 is convenient to clean and replace; of course, in order to avoid the mutual leakage between the plating solution and the anolyte, a sealing ring can be installed at the joint of the first tube 211 and the second tube 212; the diaphragm 4 is arranged between the first pipe body 211 and the second pipe body 212, and ion exchange between the electroplating solution and the anolyte is realized;
as an improvement of the above technical solution, a first net rack 2111 is installed in the first pipe body 211; a second net support 2121 is arranged in the second pipe 212; the first net support 2111 and the second net support 2121 are both honeycomb structures; the diaphragm 4 is disposed between the first net mount 2111 and the second net mount 2121; the edge of the diaphragm 4 abuts against the inner wall of the first tube 211;
the first net rack 2111 and the second net rack 2121 are used as support frames for the diaphragm 4 on one hand, and support is carried out on the diaphragm 4 from two sides of the diaphragm 4, so that the strength of the diaphragm 4 during electroplating is greatly improved, the diaphragm 4 is prevented from deforming due to large hydraulic pressure, the service life of the diaphragm 4 is ensured, if no support structure is arranged on two sides of the diaphragm 4, the diaphragm 4 is easy to bulge and deform to one side after being subjected to high hydraulic pressure for a long time, the sealing performance and the electroplating efficiency of the diaphragm 4 are greatly reduced, meanwhile, the sealing performance of the diaphragm 4 is ensured, the anolyte and the electroplating solution are prevented from being mixed together, the edge of the diaphragm 4 is attached to the inner wall of the first pipe body 211, the first net rack 2111 and the second net rack 2121 are separated through the diaphragm 4, the electroplating solution and the anolyte are prevented from being mixed together, of course, in order to ensure the sealing performance of the installation of the diaphragm 4, a sealing gasket can be installed between the diaphragm 4 and the inner wall of the first tube body 211; on the other hand, the first net support 2111 and the second net support 2121 both adopt a honeycomb structure, and can contain impurities generated in the electroplating process, so that the situation that the membrane 4 is blocked due to the attachment of the impurities on the membrane 4 is avoided, normal ion exchange is ensured, and the normal running of electroplating and the uniformity of an electroplated layer are ensured.
As an improvement of the above technical solution; the rod body 5 comprises an inner rod 51 and outer rods 52 which are in threaded connection with two ends of the inner rod 51; the inner wall of the electroplating bath 1 and the outer wall of the anode liquid tank 2 are both provided with a threaded short rod 6; the outer rods 52 at the two ends of the inner rod 51 are respectively in threaded connection with the threaded short rod 6 on the inner wall of the electroplating bath 1 and the threaded short rod 6 on the outer wall of the anode liquid tank 2;
the rod body 5 is connected with the thread short rod 6 through threads, so that the rod body 5, the electroplating bath 1 and the anode liquid tank 2 are detachably mounted, and the disassembly and the assembly are convenient; the rod body 5 is formed by connecting an inner rod 51 and an outer rod 52 through threads, so that the whole length of the rod body 5 is convenient to adjust, and the installation and the fixation are convenient.
As an improvement of the above technical solution, in order to further prevent the anode liquid tank 2 from shifting in the electroplating tank 1, the bottom of the electroplating tank 1 is provided with a bump 11; the bottom end of the anode liquid tank 2 is provided with a groove; the lug 11 is arranged in the groove;
through the cooperation of lug 11 and recess, restriction anode cistern 2 lateral shifting in plating bath 1, further play the positioning action to anode cistern 2, help guaranteeing the homogeneity of electroplated layer, of course, in order to guarantee the positioning effect, the size of lug 11 and recess forms and sets up the same.
As an improvement of the technical scheme, the volume of the anode liquid tank 2 is 10-15% of the volume of the electroplating bath 1;
the size of the anode liquid tank 2 is reasonably arranged, so that the proper anode liquid amount and the proper diaphragm size are ensured; when the production is carried out for 24 hours, the anode liquid in the anode liquid tank 2 is completely replaced every month or is replaced by 25% every week.
As an improvement of the above technical solution, the diaphragm 4 is one of an organic film, an inorganic film and a porous ceramic film;
on one hand, the diaphragm 4 enables the electroplating solution and the anode solution to carry out ion exchange, thereby realizing the electroplating function; on the other hand, the diaphragm 4 can prevent the oxide generated by the anode from entering into the electroplating solution, thereby avoiding the oxidation of organic compounds in the electroplating solution, reducing the consumption of heat generation and hydrogen evolution on current and greatly improving the current efficiency.
As an improvement of the technical scheme, the anolyte comprises sodium hydroxide, potassium chloride, silicate, zinc ions, nickel ions and water; the electroplating solution is an alkaline solution or an acidic solution; the electroplating solution is zinc and zinc alloy electroplating solution.
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119604647A (en) * | 2024-03-07 | 2025-03-11 | 株式会社荏原制作所 | Plating device and plating method |
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| CN205443504U (en) * | 2016-03-15 | 2016-08-10 | 无锡市瑞思科环保科技有限公司 | Ageing liquid processing apparatus is electroplated to borofluoride |
| CN109056002A (en) * | 2017-07-19 | 2018-12-21 | 叶旖婷 | A kind of through-hole isolation method acid copper plating process and its device |
| CN208104599U (en) * | 2018-04-03 | 2018-11-16 | 江苏安凯特科技股份有限公司 | A kind of bath concentration adjusting processing system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119604647A (en) * | 2024-03-07 | 2025-03-11 | 株式会社荏原制作所 | Plating device and plating method |
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| CN112981511B (en) | 2023-11-10 |
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