CN110791789A - Ultrasonic wave integrated silver plating method - Google Patents
Ultrasonic wave integrated silver plating method Download PDFInfo
- Publication number
- CN110791789A CN110791789A CN201911172914.5A CN201911172914A CN110791789A CN 110791789 A CN110791789 A CN 110791789A CN 201911172914 A CN201911172914 A CN 201911172914A CN 110791789 A CN110791789 A CN 110791789A
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- ultrasonic
- silver plating
- electroplating
- plating method
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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
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/20—Electroplating using ultrasonics, vibrations
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
- C25D5/022—Electroplating of selected surface areas using masking means
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
- C25D5/12—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses an ultrasonic integrated silver plating method, which can obtain the following technical effects: 1. by utilizing the metal transmissibility of ultrasonic waves, the concentration of the solution in each water tank is kept uniform all the time, the accuracy and uniformity during electroplating are improved, the thickness of a coating is more uniform, and the step of polishing is omitted; 2, impurities such as oil stains and oxides on the surface are continuously removed by ultrasonic cleaning, the pressure of a decontamination step is reduced, and the ultrasonic used for cleaning can be used for vibrating the solution in the water tank again, so that the starting gear of the ultrasonic is reduced, and more energy is saved; 3. the invention improves the accuracy and uniformity during electroplating, ensures better silver plating effect, reduces energy consumption and metal raw material loss, optimizes the cost, ensures higher ion exchange speed during silver plating and improves the yield.
Description
Technical Field
The application relates to an ultrasonic integrated silver plating method.
Background
The bonding force of the coating and the substrate is one of important indexes for measuring the quality of the coating. At present, in a chemical plating device used in a general chemical plating process, an input mode of energy is mainly constant-temperature water bath heating or electric heating, and the following defects mainly exist: firstly, the reaction can be carried out only when the temperature required by chemical plating is above 80-85 ℃ in the traditional heating mode, the energy consumption is large, the plating solution is evaporated quickly, and the plating solution has poor stability and is easy to decompose, thereby causing the waste of the plating solution; secondly, because the required chemical plating reaction temperature is higher, the material to be plated is limited, and the material is easy to deposit on the wall of the chemical plating bath in the reaction process, thereby causing the waste of the plating solution. The above-mentioned conventional chemical plating by heating has problems that the surface of the obtained plating layer is rough and uneven, and the bonding force between the plating layer and the substrate is poor.
At present, ultrasonic waves are introduced into the existing silver plating technology as a cleaning means, but the traditional silver plating does not use ultrasonic waves except for an ultrasonic step, but certain energy is wasted for the activated ultrasonic waves.
Disclosure of Invention
In order to solve the technical problem of ultrasonic resource waste, the application discloses an ultrasonic integrated silver plating method, which comprises the following process steps:
s1, incoming material inspection is carried out to ensure that the plated material is free from oxidation, blackening, scratches, defects and deformation;
s2, hanging the electroplated material on an electroplating hanger to ensure that the electroplated material has no defect, deformation and firm hanging, the hanging holes are aligned, and the hanger has no plastic steel layering;
s3, ultrasonic cleaning, wherein the surface is cleaned by ultrasonic waves;
s4, electrolytic degreasing;
s5, acid washing, and washing with an acid solution;
s6, washing with water to wash out the residual acid solution in the previous step;
s7, preplating, namely, performing preplating in a water tank, and plating a layer of nickel on the surface of a plated material;
s8, neutralizing the electroplating solution remained in the previous step by using alkaline solution to ensure that the surface of the electroplating solution is free from acid film residue;
s9, electroplating in a water tank to form a silver plating layer;
s10, emitting light, and wiping the surface to be smooth;
s11, passivating;
s12, washing with hot water, and washing with hot water at the temperature of 60-70 ℃;
s13, sealing;
s14, baking, and drying the silver-plated workpiece;
s15, hanging down, placing the hanging tools at a fixed position without collision, and manually taking down the hanging tools one by one;
and S16, detecting to ensure that no bubble exists, no water seepage and blackening occur at the hole position, and no residue exists.
The present invention can be further optimized in that the ultrasonic wave in the ultrasonic cleaning step of S3 has a frequency of 40KHz to 60 KHz.
The invention can be further optimized in that the ultrasonic wave duration time in the ultrasonic wave cleaning step of S3 is 3-5 minutes, and the vibration direction is positioned in the horizontal direction vertical to the side surface of the plated material.
The invention can be further optimized in that a tinning step can be added after the electroplating step of S8 is finished, and a layer of tinning is plated outside the silvering layer.
The invention can be further optimized in that the plated materials are immersed in the electroplating solution in the steps of pre-plating, electroplating and tinning, and high-frequency direct current is introduced into the electroplating solution.
The invention can be further optimized in that the input end or the output end of S6 is provided with an air blowing pipe for blowing air to the material, cooling the material and blowing off the waste water in the previous process.
The present invention can be further optimized in that when the steps of the S7 pre-plating and the S9 plating are performed, the bottom plate and the four walls of the plating solution tank are provided with ultrasonic generators and emit ultrasonic waves of 80KHz to 120 KHz.
The present invention may be further optimized such that the passivating agent employed in the step of passivating S11 is a chromium-free passivating agent.
The invention can be further optimized to seal the positions of the plated materials which do not need to be plated with adhesive in the steps of pre-plating, electroplating and tinning.
Compared with the prior art, the application can obtain the following technical effects: 1. by utilizing the metal transmissibility of ultrasonic waves, the concentration of the solution in each water tank is kept uniform all the time, the accuracy and uniformity during electroplating are improved, the thickness of a coating is more uniform, and the step of polishing is omitted; 2, impurities such as oil stains and oxides on the surface are continuously removed by ultrasonic cleaning, the pressure of a decontamination step is reduced, and the ultrasonic used for cleaning can be used for vibrating the solution in the water tank again, so that the starting gear of the ultrasonic is reduced, and more energy is saved; 3. the invention improves the accuracy and uniformity during electroplating, ensures better silver plating effect, reduces energy consumption and metal raw material loss, optimizes the cost, ensures higher ion exchange speed during silver plating and improves the yield.
Detailed Description
Embodiments of the present application will be described in detail with reference to the following embodiments, so that how to implement the technical means for solving the technical problems and achieving the technical effects of the present application can be fully understood and implemented.
Embodiment 1, an ultrasonic integrated silver plating method, the method includes the following process steps:
s1, incoming material inspection is carried out to ensure that the plated material is free from oxidation, blackening, scratches, defects and deformation;
s2, hanging the electroplated material on an electroplating hanger to ensure that the electroplated material has no defect, deformation and firm hanging, the hanging holes are aligned, and the hanger has no plastic steel layering;
s3, ultrasonic cleaning is carried out, the ultrasonic frequency is 40KHz, the surface is cleaned by utilizing ultrasonic waves, the ultrasonic wave duration is 3 minutes, and the vibration direction is positioned in the horizontal direction vertical to the side surface of the plated material;
s4, electrolytic degreasing;
s5, acid washing, and washing with an acid solution;
s6, washing with water to wash out the residual acid solution in the previous step;
s7, preplating, namely, performing preplating in a water tank, and plating a layer of nickel on the surface of a plated material;
s8, neutralizing the electroplating solution remained in the previous step by using alkaline solution to ensure that the surface of the electroplating solution is free from acid film residue;
s9, electroplating in a water tank to form a silver plating layer;
s10, emitting light, and wiping the surface to be smooth;
s11, passivating;
s12, washing with hot water, and washing with hot water at 60 ℃;
s13, sealing;
s14, baking, and drying the silver-plated workpiece;
s15, hanging down, placing the hanging tools at a fixed position without collision, and manually taking down the hanging tools one by one;
and S16, detecting to ensure that no bubble exists, no water seepage and blackening occur at the hole position, and no residue exists.
Embodiment 2, an ultrasonic integrated silver plating method, the method includes the following process steps:
s1, incoming material inspection is carried out to ensure that the plated material is free from oxidation, blackening, scratches, defects and deformation;
s2, hanging the electroplated material on an electroplating hanger to ensure that the electroplated material has no defect, deformation and firm hanging, the hanging holes are aligned, and the hanger has no plastic steel layering;
s3, ultrasonic cleaning, wherein ultrasonic is used for cleaning the surface, the frequency of the ultrasonic is 60KHz, the duration time of the ultrasonic is 5 minutes, and the vibration direction is positioned in the horizontal direction vertical to the side surface of the plated material;
s4, electrolytic degreasing;
s5, acid washing, and washing with an acid solution;
s6, washing with water to wash out the residual acid solution in the previous step;
s7, preplating, namely, performing preplating in a water tank, and plating a layer of nickel on the surface of a plated material;
s8, neutralizing the electroplating solution remained in the previous step by using alkaline solution to ensure that the surface of the electroplating solution is free from acid film residue;
s9, electroplating in a water tank to form a silver plating layer; plating a layer of tin plating outside the silver plating layer after the silver plating is finished;
s10, emitting light, and wiping the surface to be smooth;
s11, passivating;
s12, washing with hot water, and washing with hot water at 70 ℃;
s13, sealing;
s14, baking, and drying the silver-plated workpiece;
s15, hanging down, placing the hanging tools at a fixed position without collision, and manually taking down the hanging tools one by one;
and S16, detecting to ensure that no bubble exists, no water seepage and blackening occur at the hole position, and no residue exists.
In the steps of pre-plating, electroplating and tinning, the plated material is immersed in the electroplating solution, and high-frequency direct current is introduced into the electroplating solution.
In embodiment 3, the input end or the output end of the S6 is provided with an air blowing pipe for blowing the material, and the air blowing pipe is used for cooling the material and blowing off the waste water in the previous process, so that the plated material cooled in time can improve the conversion rate of electroplating.
Example 4, when the pre-plating of S7 and the plating of S9 were performed, the bottom plate and the four walls of the plating solution tank were equipped with ultrasonic generators and emitted 80KHz to 120KHz ultrasonic waves, and the concentration of the solution inside each tank was constantly kept uniform by the metal transmissibility of the ultrasonic waves, improving the accuracy and uniformity during plating, and making the plating thickness more uniform.
The passivating agent adopted in the S11 passivating step is a chromium-free passivating agent.
In the steps of pre-plating, electroplating and tinning, the positions of the plated materials, which do not need to be electroplated, are sealed by using adhesive.
Compared with the prior art, the application can obtain the following technical effects: 1. by utilizing the metal transmissibility of ultrasonic waves, the concentration of the solution in each water tank is kept uniform all the time, the accuracy and uniformity during electroplating are improved, the thickness of a coating is more uniform, and the step of polishing is omitted; 2, impurities such as oil stains and oxides on the surface are continuously removed by ultrasonic cleaning, the pressure of a decontamination step is reduced, and the ultrasonic used for cleaning can be used for vibrating the solution in the water tank again, so that the starting gear of the ultrasonic is reduced, and more energy is saved; 3. the invention improves the accuracy and uniformity during electroplating, ensures better silver plating effect, reduces energy consumption and metal raw material loss, optimizes the cost, ensures higher ion exchange speed during silver plating and improves the yield.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An ultrasonic integrated silver plating method is characterized by comprising the following process steps:
s1, incoming material inspection is carried out to ensure that the plated material is free from oxidation, blackening, scratches, defects and deformation;
s2, hanging the electroplated material on an electroplating hanger to ensure that the electroplated material has no defect, deformation and firm hanging, the hanging holes are aligned, and the hanger has no plastic steel layering;
s3, ultrasonic cleaning, wherein the surface is cleaned by ultrasonic waves;
s4, electrolytic degreasing;
s5, acid washing, and washing with an acid solution;
s6, washing with water to wash out the residual acid solution in the previous step;
s7, preplating, namely, performing preplating in a water tank, and plating a layer of nickel on the surface of a plated material;
s8, neutralizing the electroplating solution remained in the previous step by using alkaline solution to ensure that the surface of the electroplating solution is free from acid film residue;
s9, electroplating in a water tank to form a silver plating layer;
s10, emitting light, and wiping the surface to be smooth;
s11, passivating;
s12, washing with hot water, and washing with hot water at the temperature of 60-70 ℃;
s13, sealing;
s14, baking, and drying the silver-plated workpiece;
s15, hanging down, placing the hanging tools at a fixed position without collision, and manually taking down the hanging tools one by one;
and S16, detecting to ensure that no bubble exists, no water seepage and blackening occur at the hole position, and no residue exists.
2. The ultrasonic integrated silver plating method according to claim 1, characterized in that: the ultrasonic wave in the step of S3 ultrasonic cleaning has the frequency of 40KHz-60KHz and the power of more than 0.6 kw.
3. The ultrasonic integrated silver plating method according to claim 1, characterized in that: and the ultrasonic wave duration in the ultrasonic wave cleaning step of S3 is 3-5 minutes, and the vibration direction is positioned in the horizontal direction vertical to the side surface of the plated material.
4. The ultrasonic integrated silver plating method according to claim 1, characterized in that: after the electroplating step of S8, a tin plating step can be added, and a layer of tin plating is plated outside the silver plating layer.
5. The ultrasonic integrated silver plating method according to claim 4, characterized in that: in the steps of pre-plating, electroplating and tinning, the plated material is immersed in the electroplating solution, and high-frequency direct current is introduced into the electroplating solution.
6. The ultrasonic integrated silver plating method according to claim 1, characterized in that: and air blowing pipes for blowing air to the material and cooling the material and blowing off the waste water in the previous process are arranged at the input end or the output end of the S6.
7. The ultrasonic integrated silver plating method according to claim 1, characterized in that: when the steps of the S7 pre-plating and the S9 plating are carried out, the bottom plate and the four walls of the plating solution water tank are provided with ultrasonic generators and emit ultrasonic waves of 80KHz-120 KHz.
8. The ultrasonic integrated silver plating method according to claim 1, characterized in that: the passivating agent adopted in the S11 passivating step is a chromium-free passivating agent.
9. The ultrasonic integrated silver plating method according to claim 5, characterized in that: in the steps of pre-plating, electroplating and tinning, the positions of the plated materials, which do not need to be electroplated, are sealed by using adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911172914.5A CN110791789A (en) | 2019-11-26 | 2019-11-26 | Ultrasonic wave integrated silver plating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911172914.5A CN110791789A (en) | 2019-11-26 | 2019-11-26 | Ultrasonic wave integrated silver plating method |
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| CN110791789A true CN110791789A (en) | 2020-02-14 |
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| CN201911172914.5A Pending CN110791789A (en) | 2019-11-26 | 2019-11-26 | Ultrasonic wave integrated silver plating method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394757A (en) * | 2020-04-15 | 2020-07-10 | 湖州努特表面处理科技有限公司 | A wrap mechanism for silver-plated strip part |
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|---|---|---|---|---|
| CN101235523A (en) * | 2008-03-06 | 2008-08-06 | 上海交通大学 | Ultrasonic cyanogen-free fast silver coating method |
| CN101326015A (en) * | 2005-12-14 | 2008-12-17 | 麦克德米德有限公司 | Method of using ultrasonics to plate silver |
| CN102605396A (en) * | 2012-04-18 | 2012-07-25 | 吉安市荣泰电讯科技有限公司 | Application of ultrasonic waves in electroplating process |
| CN103173818A (en) * | 2011-12-24 | 2013-06-26 | 黄小飞 | Environment-friendly silver electroplating technique |
| CN103334134A (en) * | 2013-04-19 | 2013-10-02 | 中山职业技术学院 | Method for ultrasonic electroplating of aluminum alloy |
| GB2534120A (en) * | 2014-11-28 | 2016-07-20 | Daido Ind Bearings Europe Ltd | Bismuth-based composite coating for overlay applications in plain bearings |
-
2019
- 2019-11-26 CN CN201911172914.5A patent/CN110791789A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326015A (en) * | 2005-12-14 | 2008-12-17 | 麦克德米德有限公司 | Method of using ultrasonics to plate silver |
| CN101235523A (en) * | 2008-03-06 | 2008-08-06 | 上海交通大学 | Ultrasonic cyanogen-free fast silver coating method |
| CN103173818A (en) * | 2011-12-24 | 2013-06-26 | 黄小飞 | Environment-friendly silver electroplating technique |
| CN102605396A (en) * | 2012-04-18 | 2012-07-25 | 吉安市荣泰电讯科技有限公司 | Application of ultrasonic waves in electroplating process |
| CN103334134A (en) * | 2013-04-19 | 2013-10-02 | 中山职业技术学院 | Method for ultrasonic electroplating of aluminum alloy |
| GB2534120A (en) * | 2014-11-28 | 2016-07-20 | Daido Ind Bearings Europe Ltd | Bismuth-based composite coating for overlay applications in plain bearings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394757A (en) * | 2020-04-15 | 2020-07-10 | 湖州努特表面处理科技有限公司 | A wrap mechanism for silver-plated strip part |
| CN111394757B (en) * | 2020-04-15 | 2022-06-03 | 湖州努特表面处理科技有限公司 | A wrap mechanism for silver-plated strip part |
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