CN112481667B - Zinc-nickel alloy electroplating process - Google Patents
Zinc-nickel alloy electroplating process Download PDFInfo
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- CN112481667B CN112481667B CN202011206661.1A CN202011206661A CN112481667B CN 112481667 B CN112481667 B CN 112481667B CN 202011206661 A CN202011206661 A CN 202011206661A CN 112481667 B CN112481667 B CN 112481667B
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
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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
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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
- C25D17/06—Suspending or supporting devices for articles to be coated
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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
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/02—Heating or cooling
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/10—Agitating of electrolytes; Moving of racks
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/562—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of iron or nickel or cobalt
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Abstract
The invention discloses a zinc-nickel alloy electroplating process, which comprises a tank body, wherein a working mechanism, an air stirring mechanism and a plated part hanging mechanism are sequentially arranged on the tank body; the working mechanism comprises an electroplating bath, a heating pipe, an anode bag, a control platform, an anode zinc plate and an anode nickel plate; the electroplating bath is arranged in the tank body, and a heating pipe is arranged in the electroplating bath; the number of the anode bags is two, the anode bags are symmetrically arranged on the inner wall of the electroplating bath respectively, an anode zinc plate is arranged inside one of the anode bags, and an anode nickel plate is arranged inside the other anode bag; the control platform is fixedly connected with one side of the bottom end of the front surface of the pool body. According to the invention, the air stirring mechanism is arranged, and the liquid in the electroplating bath is stirred by utilizing the rising force of air in the liquid, so that the temperature and the concentration of the liquid in the electroplating bath are kept consistent, the quality of a coating is further improved, the product quality is ensured, and the device is suitable for large electroplating baths.
Description
Technical Field
The invention relates to the technical field of electroplating equipment, in particular to a zinc-nickel alloy electroplating process.
Background
The technology of electroplating zinc-nickel alloy is put into production and widely applied in developed countries such as Japan, Germany, America and the like in the 80 th century, the application range and the number of the technology are still rapidly expanded at present, and the electroplating zinc-nickel alloy layer is an excellent protective coating, is mainly used for corrosion resistance protection of steel materials, is used for replacing a cadmium coating and a zinc coating, and is suitable for being used in severe industrial atmosphere and severe marine environment; the corrosion resistance of the zinc-nickel alloy with 7-9% of nickel mass fraction is more than 3 times of that of galvanizing, the corrosion resistance of the zinc-nickel alloy with 13% of nickel content is more than 5 times of that of a galvanizing layer, and particularly, after the zinc-nickel alloy is heated at 200-300 ℃, a passive film can still keep good corrosion resistance; the coating has small hydrogen brittleness and can replace a cadmium coating, and a zinc-nickel alloy coating containing 10-l 6% of Ni has the characteristics of relatively small low hydrogen brittleness, high coating hardness (180-220 HV), good weldability and the like; therefore, the zinc-nickel alloy electroplating technology has wide application prospect.
In the prior art (No. CN203625506U), an electroplating apparatus for acidic zinc-nickel alloy includes a power supply and an electroplating bath, wherein a cathode stainless steel plate is transversely disposed in the electroplating bath, an anode is transversely suspended on the upper portion of the electroplating bath relative to the cathode stainless steel plate, the electroplating bath is connected in series with an auxiliary tank via a pressure pump, an injection pipeline parallel and symmetrical to the cathode stainless steel plate is disposed at the bottom of the electroplating bath, the injection pipeline has the same length as that of a main tank body, and a plurality of nozzles are disposed on the injection pipeline; be equipped with controlling device on the negative pole corrosion resistant plate, the utility model discloses a pressure pump compression pair inslot groove liquid sprays to the main tank through specific nozzle to make the solution in the main tank form the mode of inner loop, the very big circulation exchange of solution with higher speed.
In the process of implementing the invention, the inventor finds that at least the following problems in the prior art are not solved: 1. in the prior art, a pressure pump is adopted to compress liquid in an auxiliary tank and the liquid is sprayed into a main tank through a specific nozzle, so that the liquid in the main tank forms an internal circulation mode, the circulation exchange of the solution is greatly accelerated, but for a large-scale factory, an electroplating tank is often large in scale during electroplating processing, the stirring effect is poor due to the internal circulation mode formed by the pressure pump, the temperature and the concentration of the liquid in the whole electroplating tank cannot be kept consistent, the quality of a coating is poor, and the product quality is reduced; 2. aiming at different electroplated products, in order to ensure the best plating quality, the required stirring modes are different, the stirring mode of the electroplating device in the prior art is single, the universality is poor, and the stirring mode can not be selected according to the shape and the specification of different electroplated parts.
Therefore, a zinc-nickel alloy electroplating process is provided.
Disclosure of Invention
The invention aims to provide a zinc-nickel alloy electroplating process, which can prevent impurities and water in the air from influencing the quality of a coating by compressing the air by an air compressor through an air stirring mechanism and purifying the impurities and the water in the air by an activated carbon adsorption plate and a drying plate through compressed air, introduce air into an electroplating bath through a one-way valve and an air outlet pipe, stir the liquid in the electroplating bath by utilizing the ascending force of the air in the liquid, keep the temperature and the concentration of the liquid in the electroplating bath consistent, improve the quality of the coating and ensure the product quality, and is suitable for a large electroplating bath The active carbon adsorption plate and the drying plate are replaced by the clamping grooves, so that the replacement efficiency is improved; according to the invention, by arranging the plating part hanging mechanism, the hanging frame can be used for hanging the plating part, when the plated product is not suitable for air stirring, the slide block can be used for sliding in the chute, so that the mounting frame and the hanging frame are driven to move, the hanging frame can be rotated in cooperation with the second motor, so that the plating part on the hanging frame is driven to move and rotate, the moving stirring of the cathode is realized, the coating quality is ensured, meanwhile, the stirring universality of the device is improved in cooperation with the air stirring mechanism, the problems that the stirring mode of the electroplating device in the prior art is single, the universality is poor, and the selection of the stirring mode cannot be carried out according to the shape and specification of different plating parts are solved, and the problems provided in the background technology are solved.
In order to achieve the purpose, the invention provides the following technical scheme: a zinc-nickel alloy electroplating process comprises the following steps:
s1: cleaning the surface of a zinc-nickel alloy workpiece to be electroplated, and removing grease and impurities on the surface of the workpiece to be processed; during cleaning, a workpiece is placed in water which is added with a cleaning agent and has the temperature of 60-80 ℃, the workpiece is cleaned by ultrasonic waves, after the cleaning is finished, the electroplated workpiece is cleaned by clean water, and after the cleaning is finished, the workpiece is dried;
s2: placing the workpiece processed in the step S1 into a suspension bracket (75) on a plating part suspension mechanism (7) in an electroplating device, and then switching on a power supply to control the electroplating device to work so as to complete the electroplating treatment of the workpiece;
s3: taking the electroplated workpiece out of the electroplating device on the basis of the step S2, cleaning the electroplated workpiece in hot water at 80-100 ℃, removing the residual electroplating solution on the surface of the workpiece, and drying the workpiece to complete electroplating treatment of the workpiece;
the electroplating device comprises a tank body, and a working mechanism, an air stirring mechanism and a plated part hanging mechanism are sequentially arranged on the tank body;
the working mechanism comprises an electroplating bath, a heating pipe, an anode bag, a control platform, an anode zinc plate and an anode nickel plate; the electroplating bath is arranged in the tank body, and a heating pipe is arranged in the electroplating bath; the number of the anode bags is two, the anode bags are symmetrically arranged on the inner wall of the electroplating bath respectively, an anode zinc plate is arranged inside one of the anode bags, and an anode nickel plate is arranged inside the other anode bag; the control platform is fixedly connected with one side of the bottom end of the front surface of the tank body;
the air stirring mechanism comprises a shell, a clamping plate, an active carbon adsorption plate, a drying plate, a clamping groove, an air compressor, a one-way valve, an air outlet pipe and an anode mud cleaning mechanism; the shell is fixedly connected with the other side of the bottom end of the front surface of the tank body; the air compressor is arranged at one end inside the shell; the active carbon adsorption plate and the drying plate are arranged at the other end in the shell, and the upper ends of the active carbon adsorption plate and the drying plate are fixedly connected with the clamping plate in sequence; the clamping groove is arranged on the upper surface of the shell, and the clamping plate is connected to the inside of the clamping groove in a clamping manner; a pipeline is arranged at the other end of the inside of the shell close to the drying plate and is fixedly connected with the air outlet pipe through the pipeline; a one-way valve is arranged on the side surface of the pipeline; the anode mud cleaning mechanism is arranged in the electroplating bath and close to the gas outlet pipe;
the plated part suspension mechanism comprises a chute, a slide block, a mounting frame, a second motor, a suspension frame and a hanger; the chute is arranged at the edge of the upper surface of the tank body; a sliding block is arranged in the sliding groove in a sliding manner; the upper surface of the sliding block is fixedly provided with a mounting frame; a second motor is fixedly arranged in the middle of the upper end of the mounting rack; the lower end of the second motor is rotatably connected with a suspension bracket; the lower end of the suspension bracket is fixedly connected with a hanger.
In the prior art, a pressure pump is adopted to compress liquid in an auxiliary tank and the liquid is sprayed into a main tank through a specific nozzle, so that the liquid in the main tank forms an internal circulation mode, the circulation exchange of the solution is greatly accelerated, but for a large-scale factory, an electroplating tank is often large in scale during electroplating processing, the stirring effect of the internal circulation mode formed by the pressure pump is poor, the temperature and the concentration of the liquid in the whole electroplating tank can not be kept consistent, the quality of a plating layer is poor, and the product quality is reduced. The electroplating bath is characterized in that the liquid in the electroplating bath is stirred by utilizing the ascending force of air in the liquid, so that the temperature and the concentration of the liquid in the electroplating bath are kept consistent, the quality of a coating is improved, the product quality is ensured, and the electroplating bath is suitable for a large electroplating bath; aiming at different electroplated products, in order to ensure the best plating quality, the required stirring modes are different, the electroplating device in the prior art has single stirring mode and poor universality, and the selection of the stirring mode cannot be carried out according to the shape and specification of different electroplated parts, the electroplating device can utilize the suspension bracket to suspend the electroplated parts by the plating part suspension mechanism, when the electroplated products are not suitable for air stirring, the slide block can be utilized to slide in the chute so as to drive the mounting bracket and the suspension bracket to move, the suspension bracket can be rotated by matching with the second motor so as to drive the electroplated parts on the suspension bracket to move and rotate, the moving stirring of a cathode is realized, the stirring universality of the device is improved by matching with the air stirring mechanism while the plating quality is ensured, and the problem that the stirring mode of the electroplating device in the prior art is single is solved, poor universality and incapability of selecting a stirring mode according to the shape and specification of different electroplated parts.
Preferably, the anode mud cleaning mechanism comprises a first motor, a sealing mechanism, a mud collecting groove, a threaded rod, a sliding sleeve and an electromagnet; the first motor is fixedly connected to the side surface of the tank body; one end of the first motor penetrates through the tank body, extends into the electroplating tank and is rotatably connected with a threaded rod; the side surface of the threaded rod is connected with a sliding sleeve through threads; the lower end of the sliding sleeve is fixedly connected with an electromagnet; a sealing mechanism is arranged at the connecting position of the threaded rod and the tank body; the sludge collecting groove is arranged at the bottom in the tank body and is close to the air outlet pipe.
When the air outlet pipe on the air stirring mechanism is used for spraying air to stir the electroplating bath, deposited metal anode mud can be driven to be blown up, after the air outlet pipe is used for a long time, the metal anode mud can be accumulated at the air outlet pipe air hole to cause the air outlet pipe to be blocked, so that the air stirring mechanism can not normally work.
Preferably, the sealing mechanism comprises a connecting block, a second sealing ring, a bearing and a sealing installation groove; the connecting block is arranged at the connecting position of the threaded rod and the tank body; a bearing is connected in a penetrating manner in the middle of one end of the connecting block; a sealing installation groove is formed in the connecting block at a position close to the bearing; and a second sealing ring is arranged in the sealing installation groove and is a component made of ceramic materials.
During operation, positive pole mud clearance mechanism drives the threaded rod through first motor and transmits, but the hookup location leakproofness of threaded rod and cell body is relatively poor, can make the plating solution reveal, when influencing operational environment, still caused the waste of plating solution, the invention is through setting up sealing mechanism, utilize the connecting block to be connected threaded rod and cell body, the bearing can guarantee the normal rotation of threaded rod, the second sealing washer can seal threaded rod and cell body, the second sealing washer is ceramic material simultaneously, wearability and corrosion resistance are stronger, can prolong the life of second sealing washer.
Preferably, the hanger comprises a conductive hook, a connecting rod, a framework, a metal net side wall, a fixed hook and a protection device; the conductive lifting hook is connected to the lower end of the suspension bracket in a hanging manner; the lower end of the conductive lifting hook is fixedly connected with a connecting rod; the lower end of the connecting rod is fixedly connected with a framework; the side surface of the framework is provided with a metal mesh side wall; a fixed lifting hook is arranged in the middle of the bottom end of the framework and is fixedly connected with the suspension bracket through the fixed lifting hook; the protective device is arranged in the middle of the bottom in the framework.
When in work, the plating part hanging mechanism can slide in the chute by utilizing the slide block to drive the mounting rack and the hanging rack to move, and can rotate the hanging rack by matching with the second motor, thereby driving the electroplated part on the suspension bracket to move and rotate, realizing the moving and stirring of the cathode, but the electroplated part is influenced by moving and rotating on the suspension bracket, is unstable in fixation and easy to fall off, influences the normal plating layer of the electroplated part and reduces the plating layer quality of the electroplated part, the hanger is arranged, the hanger is of a hanging basket structure, can facilitate the placement of the electroplated part, meanwhile, the hanger is not easy to drop and convenient to coat, the conductive lifting hook can be connected with a current cathode to electrify the electroplated part, the side wall of the metal net can limit the electroplated part while realizing smoothness of solution, the fixed lifting hook further limits the hanger, and the hanger can be placed to shake in the moving process.
Preferably, the protection device comprises a connecting plate, an adjusting rod, a fixing block, a limiting cylinder and a spring; the limiting cylinder is fixedly arranged at the middle position of the bottom in the framework; a spring is arranged in the limiting cylinder; an adjusting rod is fixedly arranged at the upper end of the spring; the upper end of the adjusting rod penetrates through the limiting cylinder and is fixedly connected with a fixing block; the upper end of the fixed block is fixedly connected with a connecting plate.
When the hanger works, a small electroplated part is placed inside the hanger, and when the electroplated part moves and turns over, the electroplated part can turn over inside the hanger and collide with the side wall and the bottom of a metal net of the hanger, so that the coating is uneven, and the quality of the coating is reduced.
Preferably, the connecting position of the bottom end of the protection device and the framework is fixedly connected with a cover plate through a locking bolt; the connection position of apron and cell body is provided with first sealing washer, first sealing washer is the component of a ceramic material.
When the spring type limiting cylinder is in work, the protecting device utilizes the spring to buffer, the spring can be damaged due to corrosion and unrecoverable deformation of the spring after being used for a long time, and needs to be replaced.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can prevent impurities and moisture in the air from being influenced by magazines and moisture in the air after the air is compressed by the air compressor through the air stirring mechanism, and then the air is introduced into the electroplating bath through the one-way valve and the air outlet pipe, and the liquid in the electroplating bath is stirred by utilizing the ascending force of the air in the liquid, so that the temperature and the concentration of the liquid in the electroplating bath are kept consistent, the quality of the plating layer is improved, the product quality is ensured, the invention is suitable for large electroplating baths, the active carbon adsorption plate and the drying plate are fixed with the shell through the clamping plate and the clamping groove, and the active carbon adsorption plate and the drying plate can be conveniently replaced by utilizing the clamping plate and the clamping groove when the adsorption and drying effects of the active carbon adsorption plate and the drying plate are reduced, the replacement efficiency is improved.
2. According to the invention, by arranging the plating part hanging mechanism, the hanging frame can be used for hanging the plating part, when the plated product is not suitable for air stirring, the slide block can be used for sliding in the chute, so that the mounting frame and the hanging frame are driven to move, the hanging frame can be rotated in cooperation with the second motor, so that the plating part on the hanging frame is driven to move and rotate, the moving stirring of the cathode is realized, the quality of a plating layer is ensured, the stirring universality of the device is improved in cooperation with the air stirring mechanism, and the problems that the stirring mode of the electroplating device in the prior art is single, the universality is poor, and the selection of the stirring mode cannot be carried out according to the shape and specification of different plating parts are solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional structural view of the present invention;
FIG. 3 is a structural view of the air agitation mechanism of the present invention;
FIG. 4 is a structural view of a plated item suspension mechanism of the present invention;
FIG. 5 is a structural view of the anode slime cleaning mechanism of the present invention;
FIG. 6 is a structural view of the sealing mechanism of the present invention;
FIG. 7 is a structural view of a hanger of the present invention;
FIG. 8 is a cross-sectional structural view of a hanger of the present invention;
FIG. 9 is a structural view of the guard of the present invention;
FIG. 10 is a view of the attachment of the shield of the present invention to the side wall of the expanded metal;
FIG. 11 is a flow chart of a method of the present invention;
in the figure: 1. a tank body; 2. an electroplating bath; 3. heating a tube; 4. an air agitation mechanism; 41. a housing; 42. clamping a plate; 43. an activated carbon adsorption plate; 44. drying the plate; 45. a card slot; 46. an air compressor; 47. a one-way valve; 48. an air outlet pipe; 5. an anode bag; 6. a control platform; 7. a plated part suspension mechanism; 71. a chute; 72. a slider; 73. a mounting frame; 74. a second motor; 75. a suspension bracket; 76. a hanger; 761. a conductive hook; 762. a connecting rod; 763. a framework; 764. a metal mesh sidewall; 765. fixing a lifting hook; 766. a guard; 7661. a connecting plate; 7662. adjusting a rod; 7663. a fixed block; 7664. a limiting cylinder; 7665. a spring; 8. an anode mud cleaning mechanism; 81. a first motor; 82. a sealing mechanism; 821. connecting blocks; 822. a second seal ring; 823. a bearing; 824. sealing the mounting groove; 83. a sludge collection tank; 85. a threaded rod; 86. a sliding sleeve; 87. an electromagnet; 9. an anode zinc plate; 11. an anode nickel plate; 13. a cover plate; 14. locking the bolt; 15. a first seal ring.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 11, the present invention provides a zinc-nickel alloy electroplating process, which comprises the following steps:
a zinc-nickel alloy electroplating process, as shown in fig. 1, comprising the steps of:
s1: cleaning the surface of a zinc-nickel alloy workpiece to be electroplated, and removing grease and impurities on the surface of the workpiece to be processed; during cleaning, a workpiece is placed in water which is added with a cleaning agent and has the temperature of 60-80 ℃, the workpiece is cleaned by ultrasonic waves, after the cleaning is finished, the electroplated workpiece is cleaned by clean water, and after the cleaning is finished, the workpiece is dried;
s2: placing the workpiece processed in the step S1 into a suspension bracket (75) on a plating part suspension mechanism (7) in an electroplating device, and then switching on a power supply to control the electroplating device to work so as to complete the electroplating treatment of the workpiece;
s3: taking the electroplated workpiece out of the electroplating device on the basis of the step S2, cleaning the electroplated workpiece in hot water at 80-100 ℃, removing the residual electroplating solution on the surface of the workpiece, and drying the workpiece to complete electroplating treatment of the workpiece;
the electroplating device comprises a tank body 1, wherein a working mechanism, an air stirring mechanism 4 and a plated part hanging mechanism 7 are sequentially arranged on the tank body 1;
as shown in fig. 1 to 2, the working mechanism includes a plating bath 2, a heating pipe 3, an anode bag 5, a control platform 6, an anode zinc plate 9 and an anode nickel plate 11; the electroplating bath 2 is arranged in the tank body 1, and a heating pipe 3 is arranged in the electroplating bath 2; the number of the anode bags 5 is two, and the two anode bags are respectively and symmetrically arranged on the inner wall of the electroplating bath 2, wherein an anode zinc plate 9 is arranged inside one anode bag 5, and an anode nickel plate 11 is arranged inside the other anode bag 5; the control platform 6 is fixedly connected with one side of the bottom end of the front surface of the tank body 1;
as shown in fig. 3, the air stirring mechanism 4 includes a housing 41, a clamping plate 42, an activated carbon adsorption plate 43, a drying plate 44, a clamping groove 45, an air compressor 46, a one-way valve 47, an air outlet pipe 48, and an anode mud cleaning mechanism 8, wherein the selectable models of the air compressor 46 are: TG90A type; the shell 41 is fixedly connected with the other side of the bottom end of the front surface of the tank body 1; the air compressor 46 is arranged at one end inside the shell 41; the activated carbon adsorption plate 43 and the drying plate 44 are arranged at the other end in the shell 41, and the upper ends of the activated carbon adsorption plate 43 and the drying plate 44 are fixedly connected with the clamping plate 42 in sequence; the clamping groove 45 is arranged on the upper surface of the shell 41, and the clamping plate 42 is connected to the inside of the clamping groove 45 in a clamping manner; a pipeline is arranged at the other end of the inside of the shell 41 close to the drying plate 44 and is fixedly connected with an air outlet pipe 48 through the pipeline; the side surface of the pipe is provided with a check valve 47; the anode mud cleaning mechanism 8 is arranged in the electroplating bath 2 and close to the gas outlet pipe 48;
as shown in fig. 4, the plated part hanging mechanism 7 includes a chute 71, a slider 72, a mounting bracket 73, a second motor 74, a hanging bracket 75 and a hanger 76; the chute 71 is arranged at the edge of the upper surface of the tank body 1; a sliding block 72 is arranged in the sliding groove 71 in a sliding manner; the upper surface of the sliding block 72 is fixedly provided with a mounting frame 73; the middle position of the upper end of the mounting rack 73 is fixedly provided with a second motor 74, wherein the selectable types of the second motor 74 are as follows: PF type; the lower end of the second motor 74 is rotatably connected with a suspension bracket 75; a hanging tool 76 is fixedly connected to the lower end of the hanging frame 75.
In the prior art, a pressure pump is adopted to compress liquid in an auxiliary tank and the liquid is sprayed into a main tank through a specific nozzle, so that the liquid in the main tank forms an internal circulation mode, the circulation exchange of the solution is greatly accelerated, but for a large-scale factory, during electroplating processing, an electroplating tank is often large in scale, the stirring effect of the internal circulation mode formed by the pressure pump is poor, the temperature and the concentration of the liquid in the whole electroplating tank can not be kept consistent, the quality of a coating is poor, and the product quality is reduced, the invention adopts the air stirring mechanism 4, after air is compressed by the air compressor 46, the compressed air purifies impurities and moisture in the air through the activated carbon adsorption plate 43 and the drying plate 44, magazines and the moisture in the air can be prevented from influencing the quality of the coating, and then the air is introduced into the electroplating tank 2 through the one-way valve 47 and the air outlet pipe 48, the liquid in the electroplating bath 2 is stirred by utilizing the ascending force of air in the liquid, so that the temperature and the concentration of the liquid in the electroplating bath 2 are kept consistent, the quality of a coating is improved, the product quality is ensured, and the large-scale electroplating bath 2 is suitable for being used for fixing an activated carbon adsorption plate 43 and a drying plate 44 with a shell 41 through a clamping plate 42 and a clamping groove 45; aiming at different electroplated products, in order to ensure the best coating quality, the required stirring modes are different, the electroplating device in the prior art has single stirring mode and poor universality, and the selection of the stirring mode cannot be carried out according to the shape and specification of different electroplated parts, the electroplating device can utilize the suspension bracket 75 to suspend the electroplated parts by the plating part suspension mechanism 7, when the electroplated products are not suitable for air stirring, the slide block 72 can be utilized to slide in the chute 71 to drive the mounting bracket 73 and the suspension bracket 75 to move, the suspension bracket 75 can be rotated by matching with the second motor 74 to drive the electroplated parts on the suspension bracket 75 to move and rotate, the moving stirring of a cathode is realized, the stirring universality of the device is improved by matching with the air stirring mechanism 4 while the coating quality is ensured, and the problem that the electroplating device in the prior art has single stirring mode is solved, poor universality and incapability of selecting a stirring mode according to the shape and specification of different electroplated parts.
As an embodiment of the present invention, as shown in fig. 5, the anode slime cleaning mechanism 8 includes a first motor 81, a sealing mechanism 82, a slime collecting groove 83, a threaded rod 85, a sliding sleeve 86, and an electromagnet 87, wherein the selectable types of the first motor 81 are: PF type; the first motor 81 is fixedly connected to the side surface of the tank body 1; one end of the first motor 81 penetrates through the tank body 1, extends to the inside of the electroplating tank 2 and is rotatably connected with a threaded rod 85; the side surface of the threaded rod 85 is connected with a sliding sleeve 86 through threads; the lower end of the sliding sleeve 86 is fixedly connected with an electromagnet 87; a sealing mechanism 82 is arranged at the connecting position of the threaded rod 85 and the tank body 1; the sludge collecting groove 83 is arranged at the bottom in the tank body 1 and close to the air outlet pipe 48; when the air outlet pipe 48 on the air stirring mechanism 4 is used for jetting air to stir the electroplating bath 2, deposited metal anode mud can be driven to be blown up, after the air outlet pipe 48 is used for a long time, the metal anode mud can be accumulated at the air hole of the air outlet pipe 48 to cause the blockage of the air outlet pipe 48, so that the air stirring mechanism 4 cannot normally work.
As an embodiment of the present invention, as shown in fig. 6, the sealing mechanism 82 includes a connecting block 821, a second sealing ring 822, a bearing 823, and a sealing installation groove 824; the connecting block 821 is arranged at the connecting position of the threaded rod 85 and the tank body 1; a bearing 823 is connected in a penetrating manner in the middle of one end of the connecting block 821; a sealing installation groove 824 is formed in the connecting block 821 and is close to the bearing 823; a second sealing ring 822 is arranged in the sealing installation groove 824, and the second sealing ring 822 is a ceramic member; during operation, positive pole mud clearance mechanism 8 drives threaded rod 85 through first motor 81 and carries out the transmission, but threaded rod 85 and cell body 1's hookup location leakproofness is relatively poor, can make the plating solution reveal, when influencing operational environment, the waste of plating solution has still been caused, the invention is through setting up sealing mechanism 82, utilize connecting block 821 to be connected threaded rod 85 and cell body 1, bearing 823 can guarantee threaded rod 85's normal rotation, second sealing washer 822 can seal threaded rod 85 and cell body 1, second sealing washer 822 is the ceramic material simultaneously, wearability and corrosion resistance are stronger, can prolong the life of second sealing washer 822.
As an embodiment of the present invention, as shown in fig. 7, the hanger 76 includes a conductive hook 761, a connecting rod 762, a skeleton 763, a metal mesh sidewall 764, a fixing hook 765, and a guard 766; the conductive hook 761 is connected to the lower end of the suspension bracket 75 in a hanging manner; the lower end of the conductive hook 761 is fixedly connected with a connecting rod 762; a framework 763 is fixedly connected to the lower end of the connecting rod 762; the side surface of the framework 763 is provided with a metal mesh side wall 764; a fixed hook 765 is arranged in the middle of the bottom end of the framework 763 and is fixedly connected with the hanging frame 75 through the fixed hook 765; the protection device 766 is arranged at the middle position of the bottom in the framework 763; during operation, the plating part hanging mechanism 7 can slide in the sliding groove 71 by utilizing the sliding block 72 to drive the mounting rack 73 and the suspension rack 75 to move, and the suspension rack 75 can rotate by matching with the second motor 74 to further drive the plated part on the suspension rack 75 to move and rotate, so that the moving and stirring of the cathode are realized, but the plated part is influenced by moving and rotating on the suspension rack 75, is relatively unstable in fixation and easy to fall off, so that the normal plating layer of the plated part is influenced, and the plating quality of the plated part is reduced, in the invention, the hanger 76 is of a hanging basket structure, so that the plated part can be conveniently placed, and is not easy to fall off, the plating layer is conveniently carried out, the conductive hook 761 can be connected with a current negative pole to electrify the plated part, the metal net side wall 764 can limit the plated part while realizing smooth solution, and the fixed hook 765 further limits the hanger 76, the shaking of the hanger 76 during the movement can be prevented.
As an embodiment of the present invention, as shown in fig. 9, the protection device 766 includes a connection plate 7661, an adjustment rod 7662, a fixed block 7663, a limiting cylinder 7664, and a spring 7665; the limiting barrel 7664 is fixedly arranged at the middle position of the bottom in the framework 763; a spring 7665 is arranged inside the limiting cylinder 7664; an adjusting rod 7662 is fixedly arranged at the upper end of the spring 7665; the upper end of the adjusting rod 7662 penetrates through the limiting cylinder 7664 and is fixedly connected with a fixing block 7663; the upper end of the fixed block 7663 is fixedly connected with a connecting plate 7661; when the electroplating piece protection device is in work, a small electroplating piece is placed inside the hanger 76, and when the electroplating piece moves and turns over, the small electroplating piece can turn over inside the hanger 76 and collide with the metal mesh side wall 764 and the bottom of the hanger 76, so that the coating is uneven, and the coating quality is reduced.
As an embodiment of the present invention, as shown in fig. 10, a cover plate 13 is fixedly connected to a connection position of a bottom end of the protection device 766 and a framework 763 through a locking bolt 14; a first sealing ring 15 is arranged at the connecting position of the cover plate 13 and the tank body 1, and the first sealing ring 15 is a component made of ceramic material; when the device works, the protection device 766 utilizes the spring 7665 for buffering, the spring 7665 is damaged due to corrosion and unrecoverable deformation of the spring 7665 after long-time use and needs to be replaced, the spring 7665 can be conveniently and quickly installed and disassembled by arranging the cover plate 13 and the locking bolt 14, the replacement efficiency of the spring 7665 is improved, and the sealing performance of the connecting position of the bottom of the limiting cylinder 7664 and the cover plate 13 can be improved by the first sealing ring 15.
The using method comprises the following steps: when the electroplating device is used, firstly, an electroplated part is placed in the suspension frame 75 on the electroplated part suspension mechanism 7 and is connected with a power supply, the air stirring mechanism 4 is controlled to work through the control platform 6, the air stirring mechanism 4 is arranged, air is compressed by the air compressor 46, impurities and moisture in the air are purified by the compressed air through the activated carbon adsorption plate 43 and the drying plate 44, the influence of impurities and moisture in the air on the quality of a plating layer can be prevented, air is introduced into the electroplating bath 2 through the one-way valve 47 and the air outlet pipe 48, the liquid in the electroplating bath 2 is stirred by the rising force of the air in the liquid, the temperature and the concentration of the liquid in the electroplating bath 2 are kept consistent, the quality of the plating layer is further improved, the product quality is ensured, and the electroplating device is suitable for a large electroplating bath 2, and the activated carbon adsorption plate 43 and the drying plate 44 are connected with the power supply through the clamping plate 42, The clamping groove 45 is fixed with the shell 41, when the adsorption and drying effects of the activated carbon adsorption plate 43 and the drying plate 44 are reduced, the clamping plate 42 and the clamping groove 45 can be conveniently utilized to replace the activated carbon adsorption plate 43 and the drying plate 44, the replacement efficiency is improved, the plating part can be suspended by the suspension frame 75 through the plating part suspension mechanism 7, when the electroplated product is not suitable for air stirring, the slide block 72 can be utilized to slide in the chute 71 to drive the mounting frame 73 and the suspension frame 75 to move, the suspension frame 75 can be rotated by matching with the second motor 74 to drive the plating part on the suspension frame 75 to move and rotate, the moving stirring of the cathode is realized, the stirring universality of the device is improved by matching with the air stirring mechanism 4 while the quality of the plating layer is ensured, and the problem that the stirring mode of the electroplating device in the prior art is single is solved, poor universality and incapability of selecting a stirring mode according to the shape and specification of different electroplated parts.
The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A zinc-nickel alloy electroplating process is characterized by comprising the following steps: the method comprises the following steps:
s1: cleaning the surface of a zinc-nickel alloy workpiece to be electroplated, and removing grease and impurities on the surface of the workpiece to be processed; during cleaning, a workpiece is placed in water which is added with a cleaning agent and has the temperature of 60-80 ℃, the workpiece is cleaned by ultrasonic waves, after the cleaning is finished, the electroplated workpiece is cleaned by clean water, and after the cleaning is finished, the workpiece is dried;
s2: placing the workpiece processed in the step S1 into a suspension bracket (75) on a plating part suspension mechanism (7) in an electroplating device, and then switching on a power supply to control the electroplating device to work so as to complete the electroplating treatment of the workpiece;
s3: taking the electroplated workpiece out of the electroplating device on the basis of the step S2, cleaning the electroplated workpiece in hot water at 80-100 ℃, removing the residual electroplating solution on the surface of the workpiece, and drying the workpiece to complete electroplating treatment of the workpiece;
the electroplating device comprises a pool body (1), and is characterized in that: the tank body (1) is sequentially provided with a working mechanism, an air stirring mechanism (4) and a plated part hanging mechanism (7);
the working mechanism comprises an electroplating bath (2), a heating pipe (3), an anode bag (5), a control platform (6), an anode zinc plate (9) and an anode nickel plate (11); the electroplating bath (2) is arranged inside the tank body (1), and a heating pipe (3) is arranged inside the electroplating bath (2); the number of the anode bags (5) is two, the anode bags are respectively and symmetrically arranged on the inner wall of the electroplating bath (2), an anode zinc plate (9) is arranged inside one anode bag (5), and an anode nickel plate (11) is arranged inside the other anode bag (5); the control platform (6) is fixedly connected with one side of the bottom end of the front surface of the tank body (1);
the air stirring mechanism (4) comprises a shell (41), a clamping plate (42), an activated carbon adsorption plate (43), a drying plate (44), a clamping groove (45), an air compressor (46), a one-way valve (47), an air outlet pipe (48) and an anode mud cleaning mechanism (8); the shell (41) is fixedly connected with the other side of the bottom end of the front surface of the tank body (1); the air compressor (46) is arranged at one end inside the shell (41); the active carbon adsorption plate (43) and the drying plate (44) are arranged at the other end in the shell (41), and the upper ends of the active carbon adsorption plate (43) and the drying plate (44) are fixedly connected with the clamping plate (42) in sequence; the clamping groove (45) is formed in the upper surface of the shell (41), and the clamping plate (42) is connected to the inside of the clamping groove (45) in a clamping mode; a pipeline is arranged at the other end of the inside of the shell (41) close to the drying plate (44) and is fixedly connected with an air outlet pipe (48) through the pipeline; a one-way valve (47) is arranged on the side surface of the pipeline; the anode mud cleaning mechanism (8) is arranged in the electroplating bath (2) at a position close to the air outlet pipe (48);
the plating part hanging mechanism (7) comprises a sliding groove (71), a sliding block (72), a mounting frame (73), a second motor (74), a hanging frame (75) and a hanging tool (76); the sliding chute (71) is arranged at the edge of the upper surface of the tank body (1); a sliding block (72) is arranged in the sliding groove (71) in a sliding manner; the upper surface of the sliding block (72) is fixedly provided with a mounting rack (73); a second motor (74) is fixedly arranged in the middle of the upper end of the mounting rack (73); the lower end of the second motor (74) is rotatably connected with a suspension bracket (75); the lower end of the suspension bracket (75) is fixedly connected with a hanging tool (76);
the hanger (76) comprises a conductive hook (761), a connecting rod (762), a framework (763), a metal mesh side wall (764), a fixed hook (765) and a protection device (766); the conductive lifting hook (761) is connected to the lower end of the suspension frame (75) in a hanging manner; the lower end of the conductive hook (761) is fixedly connected with a connecting rod (762); the lower end of the connecting rod (762) is fixedly connected with a framework (763); the side surface of the framework (763) is provided with a metal mesh side wall (764); a fixed lifting hook (765) is arranged in the middle of the bottom end of the framework (763) and is fixedly connected with the suspension bracket (75) through the fixed lifting hook (765); the protective device (766) is arranged at the middle position of the bottom in the framework (763);
the protection device (766) comprises a connecting plate (7661), an adjusting rod (7662), a fixing block (7663), a limiting cylinder (7664) and a spring (7665); the limiting cylinder (7664) is fixedly arranged at the middle position of the bottom in the framework (763); a spring (7665) is arranged in the limiting barrel (7664); an adjusting rod (7662) is fixedly arranged at the upper end of the spring (7665); the upper end of the adjusting rod (7662) penetrates through the limiting cylinder (7664) and is fixedly connected with a fixing block (7663); the upper end of the fixing block (7663) is fixedly connected with a connecting plate (7661).
2. The zinc-nickel alloy electroplating process according to claim 1, characterized in that: the anode mud cleaning mechanism (8) comprises a first motor (81), a sealing mechanism (82), a mud collecting groove (83), a threaded rod (85), a sliding sleeve (86) and an electromagnet (87); the first motor (81) is fixedly connected to the side surface of the tank body (1); one end of the first motor (81) penetrates through the tank body (1) and extends into the electroplating tank (2) and is rotatably connected with a threaded rod (85); the side surface of the threaded rod (85) is connected with a sliding sleeve (86) through threads; the lower end of the sliding sleeve (86) is fixedly connected with an electromagnet (87); a sealing mechanism (82) is arranged at the connecting position of the threaded rod (85) and the tank body (1); the sludge collecting groove (83) is arranged at the bottom in the tank body (1) and is close to the air outlet pipe (48).
3. The zinc-nickel alloy electroplating process according to claim 2, characterized in that: the sealing mechanism (82) comprises a connecting block (821), a second sealing ring (822), a bearing (823) and a sealing installation groove (824); the connecting block (821) is arranged at the connecting position of the threaded rod (85) and the tank body (1); a bearing (823) is connected in a penetrating manner in the middle of one end of the connecting block (821); a sealing installation groove (824) is formed in the connecting block (821) at a position close to the bearing (823); the inside second sealing washer (822) that is provided with of sealed mounting groove (824), second sealing washer (822) are the component of a ceramic material.
4. The zinc-nickel alloy electroplating process according to claim 1, characterized in that: the connecting position of the bottom end of the protective device (766) and the framework (763) is fixedly connected with a cover plate (13) through a locking bolt (14); the connection position of apron (13) and cell body (1) is provided with first sealing washer (15), first sealing washer (15) are the component of a ceramic material.
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| CN113136613B (en) * | 2021-06-21 | 2021-09-24 | 中亿达金属科技(常州)有限公司 | Stainless steel fastener surface treatment device and process |
| CN118186330B (en) * | 2024-05-17 | 2024-10-18 | 江苏海丰交通设备科技有限公司 | Plating device for zinc-aluminum coating of automobile metal fitting |
| CN118581552A (en) * | 2024-08-06 | 2024-09-03 | 宁波德洲精密电子有限公司 | Resonance type current limiting component suitable for large-size automobile radiating fin electroplating process |
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