CN112680754A - Plating solution formula and process for continuously electroplating nickel sardine - Google Patents
Plating solution formula and process for continuously electroplating nickel sardine Download PDFInfo
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- CN112680754A CN112680754A CN202011585539.XA CN202011585539A CN112680754A CN 112680754 A CN112680754 A CN 112680754A CN 202011585539 A CN202011585539 A CN 202011585539A CN 112680754 A CN112680754 A CN 112680754A
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Abstract
The invention relates to the field of nickel electroplating, and discloses a plating solution formula and a process for continuously electroplating nickel albedo, wherein the plating solution formula of the nickel albedo comprises the following components: nickel sulfate pentahydrate: 500-560 g/l, nickel chloride: 25-35 g/l of boric acid: 40-50 g/l of a nonionic surfactant; the nonionic surfactant includes: opening the cylinder agent: the volume ratio is 32-36 ml/liter, and the auxiliary agent: the volume ratio is 4.0-6.0 ml/liter, and the sand agent: the volume ratio is 0.8-1.2 ml/liter. The process comprises the following steps: pretreatment → nickel preplating → nickel sardine plating → semigloss nickel plating → water cutting. Compared with the prior art, the satin nickel plating layer electroplated by the satin nickel plating solution formula and the electroplating process has the advantages that the glossiness is stable at 40-80, the appearance is uniform, yellow spots cannot appear after being exposed in the air, the maintenance period of the satin nickel plating solution is obviously prolonged, and the satin nickel plating layer is treated and maintained by active carbon once a month.
Description
Technical Field
The invention relates to the field of nickel electroplating, in particular to a plating solution formula and a process for continuously electroplating nickel sardine.
Background
The nickel sardine can generate diffuse light, the luminosity is soft, the hand feeling is smooth, and the microcosmic appearance is slightly fluctuated; small porosity, low internal stress, good corrosion resistance, good touch and anti-nicking capability and the like. The method is widely applied to products such as cameras, artware, instruments, automobile decorative parts, consumer electronics hardware and the like. The satin nickel plating layer obtained by the continuous electroplating process for a long time has the quality problems that the glossiness cannot meet the requirement, the appearance is not uniform, the plating layer is easy to generate yellow spots when exposed in the air and the like, and a rack plating mode is mostly adopted, so that the defects of low productivity, more manpower and high cost are overcome; in addition, the plating solution period is short, the general nickel albuterol plating solution needs to be maintained once by activated carbon after being produced for 6 hours, the lost working hours are large, and the cost is high.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a plating solution formula and a process for continuously electroplating nickel sardine, wherein the gloss of a nickel sardine plating layer electroplated by using the plating solution formula and the electroplating process is stable at 40-80, the appearance is uniform, yellow spots cannot appear when the nickel sardine plating layer is exposed in the air, the maintenance period of the nickel sardine plating solution is obviously prolonged, and the nickel sardine plating solution can be treated and maintained once a month by using active carbon.
The technical scheme is as follows: the invention provides a formula of a nickel albuterol plating solution, which comprises the following components: nickel sulfate pentahydrate: 500-560 g/l, nickel chloride: 25-35 g/l of boric acid: 40-50 g/l of a nonionic surfactant; the nonionic surfactant includes: opening the cylinder agent: the volume ratio is 32-36 ml/liter, and the auxiliary agent: the volume ratio is 4.0-6.0 ml/liter, and the sand agent: the volume ratio is 0.8-1.2 ml/liter.
Preferably, the cylinder opener is a polyethylene glycol-based compound.
Preferably, the adjuvant is a fatty alcohol-polyoxyethylene ester compound.
Preferably, the sand agent is a polyoxyethylene alkylamide compound.
The invention also provides a continuous electroplating process of the nickel albuterol, which is characterized by comprising the following steps: pre-treating; pre-plating nickel; plating nickel sardine: the electroplating temperature is 56 ℃, the Baume degree is 33-39, and the current density is 1-8 ASD; plating semi-gloss nickel: controlling the temperature to be 50-60 ℃, controlling the pH to be 3.5-4.2, controlling the current density to be 4-10 ASD, controlling the electroplating time to be 5-10 seconds, and washing with water at normal temperature after electroplating; water cutting: the concentration of the water cutting agent is 1-2%, and the water cutting agent is soaked for 4-12 seconds at normal temperature.
Preferably, in the step of plating the nickel sardine, the formula of the nickel sardine plating solution comprises: nickel sulfate pentahydrate: 500-560 g/l, nickel chloride: 25-35 g/l of boric acid: 40-50 g/l of a nonionic surfactant; the nonionic surfactant includes: opening the cylinder agent: the volume ratio is 32-36 ml/liter, and the auxiliary agent: the volume ratio is 4.0-6.0 ml/liter, and the sand agent: the volume ratio is 0.8-1.2 ml/liter.
Preferably, the cylinder opener is a polyethylene glycol-based compound; the auxiliary agent is a fatty alcohol-polyoxyethylene ester compound; the sand agent is polyoxyethylene alkyl amide compound.
Preferably, in the water-cutting step, the water-cutting agent is a biosurfactant having a hydrophobic group.
Preferably, in the pretreatment step, ultrasonic degreasing → electrolytic degreasing → normal temperature water washing → acid washing → normal temperature water washing is specifically included; wherein the current density during electrolytic degreasing is 6-10 ASD.
Preferably, in the nickel preplating step, the current density is 8-15 ASD, the electroplating time is 5-10 seconds, and the nickel is washed with water at normal temperature.
Has the advantages that: the continuous electroplating process of the nickel sardine comprises pretreatment, nickel preplating, nickel sardine plating, semi-gloss nickel plating and water cutting; the non-ionic surfactant, the auxiliary agent and the sand agent are used in the nickel sardine plating solution, the solubility of the non-ionic surfactant in the plating solution is reduced along with the increase of the temperature, when the temperature reaches the cloud point of 56 ℃, bead-shaped particles are formed and suspended in the plating solution, and when a power supply is switched on, the suspended particles move to a cathode under the action of an electric field and are adsorbed on a plated part to form a shielding point, so that the current at the shielding point is interrupted, and the nickel cannot be deposited; the nickel plating layer normally deposits when these particles desorb the plating. The particles are continuously adsorbed and desorbed under the action of an electric field to form the overlapping of semicircular pits, so that the formed nickel coating can generate diffuse light, and the stable and uniform nickel-based satin coating with the glossiness of 40-80 is obtained. The cylinder opening agent, the auxiliary agent and the sand agent selected by the process for the nickel sardine plating solution all contain-NH-, -RO-and SO2NH(CH3)N+Etc. which can form uniform and stable fine particles in the bath without decomposition when the temperature reaches the cloud point, so that the maintenance frequency can be extended to once a month.
The continuous electroplating process of the sardine nickel increases a semi-gloss nickel plating process and a water cutting process, and a semi-gloss nickel layer with the thickness more than 0 and less than 0.25 micron is plated on the sardine nickel, so that the porosity of the sardine nickel can be effectively filled, and the etching of acid mist or alkali mist in the environment to a plating layer can be effectively prevented; the water cutting process has an excellent hydrophobic function, and prevents water vapor from remaining on the coating, so that the problem that yellow spots appear when the product is exposed in the air is solved.
Drawings
FIG. 1 is an SEM (2500X) picture of a nickel-satin coating made in accordance with embodiment 1;
fig. 2 is a non-magnified visual photograph of the nickel-satin coating obtained in embodiment 1.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Embodiment 1:
the embodiment provides a formula of a nickel albuterol plating solution, which comprises the following components in part by weight: nickel sulfate pentahydrate: 560 g/l, nickel chloride: mass ratio 30 g/l, boric acid: 45 g/l of polyethylene glycol-based compound: volume ratio 35 ml/liter, fatty alcohol polyoxyethylene ester compound: volume ratio 5.0 ml/liter, oxyethylene alkyl amide compound: the volume ratio is 1.0 ml/liter.
The process for continuously electroplating the nickel pudding comprises the following steps: pretreatment → nickel preplating → nickel sardine plating → semigloss nickel plating → water cutting. Specifically, the method comprises the following steps:
pretreatment: ultrasonic degreasing → electrolytic degreasing, current density of 6-10 ASD → normal temperature water washing → acid washing → normal temperature water washing.
Pre-nickel plating: and (4) carrying out current density of 8-15 ASD, and washing with water at normal temperature after electroplating for 5-10 seconds.
And (3) plating the nickel sardine by using the nickel sardine plating solution formula: the temperature is controlled to be 56 ℃, the Baume degree is controlled to be 33-39, and the current density is controlled to be 1-8 ASD during electroplating.
Plating semi-gloss nickel: and (3) carrying out normal-temperature water washing at the temperature of 50-60 ℃, the pH value of 3.5-4.2 and the current density of 4-10 ASD after electroplating for 5-10 seconds to obtain a semi-gloss nickel coating with the thickness of 0.20 micron.
Water cutting: the concentration of the water cutting agent (the biosurfactant with hydrophobic groups) is 1-2%, and the nickel-sardine coating shown in the figures 1 and 2 is obtained after the nickel-sardine coating is soaked for 4-12 seconds at normal temperature.
In the embodiment, the formula of the nickel sardine plating solution can be continuously used for one time of maintenance for 30 days (maintenance is needed when the glossiness of a plated product does not meet the requirement or the appearance is poor), and the prepared nickel sardine plating layer is stable and uniform, has no yellow spots and has the glossiness of 60.
Embodiment 2:
the continuous electroplating process of nickel sardine provided in this embodiment is substantially the same as that of embodiment 1, except that the mass ratio of nickel sulfate pentahydrate is 530 g/L and the volume ratio of polyoxyethylene alkylamide compound is 0.9ml/L in the formulation of the nickel sardine plating solution.
In the embodiment, the prepared nickel albuterol coating is stable and uniform, has no yellow spots and has the glossiness of 75.
Embodiment 3:
the continuous electroplating process of nickel albuterol provided by this embodiment is substantially the same as embodiment 1, except that in the formulation of the nickel albuterol plating solution, the volume ratio of the poly (diethylene glycol) based compound is 36ml/L, the volume ratio of the fatty alcohol-polyoxyethylene based compound is 5.5ml/L, and the volume ratio of the polyoxyethylene alkylamide compound is 1.1 ml/L.
In the embodiment, the prepared nickel albuterol coating is stable and uniform, has no yellow spots and has the glossiness of 50.
Embodiment 4:
the continuous electroplating process of nickel sardine provided by the embodiment is substantially the same as that of embodiment 1, and is different only in that the volume ratio of the fatty alcohol-polyoxyethylene ester compound is 6.0ml/L and the volume ratio of the polyoxyethylene alkyl amide compound is 1.2ml/L in the formula of the nickel sardine plating solution.
In the embodiment, the formula of the nickel sardine plating solution can be continuously used for one time of maintenance for 30 days, and the prepared nickel sardine plating layer is stable and uniform, has no yellow spots and has the glossiness of 40.
The above embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A formula of a nickel albuterol plating solution is characterized by comprising the following components: nickel sulfate pentahydrate: 500-560 g/l, nickel chloride: 25-35 g/l of boric acid: 40-50 g/l of a nonionic surfactant; the nonionic surfactant includes: opening the cylinder agent: the volume ratio is 32-36 ml/liter, and the auxiliary agent: the volume ratio is 4.0-6.0 ml/liter, and the sand agent: the volume ratio is 0.8-1.2 ml/liter.
2. The nickel albuterol plating bath formulation according to claim 1, wherein the cylinder opener is a poly-diethylene-based compound.
3. The nickel sardine plating bath formulation of claim 1 wherein the adjuvant is a fatty alcohol polyoxyethylene ester compound.
4. The nickel sardine plating bath formulation of claim 1 wherein the sand agent is a polyoxyethylene alkylamide compound.
5. A continuous electroplating process of nickel albuterol, characterized by comprising:
pre-treating;
pre-plating nickel;
plating nickel sardine: the electroplating temperature is 55-58 ℃, the Baume degree is 33-39, and the current density is 1-8 ASD;
plating semi-gloss nickel: controlling the temperature to be 50-60 ℃, controlling the pH to be 3.5-4.2, controlling the current density to be 4-10 ASD, controlling the electroplating time to be 5-10 seconds, and washing with water at normal temperature after electroplating; the thickness of the semi-gloss nickel plating layer is more than 0 and less than 0.25 micron;
water cutting: the concentration of the water cutting agent is 1-2%, and the water cutting agent is soaked for 4-12 seconds at normal temperature.
6. The continuous electroplating process of sardine nickel as claimed in claim 5, wherein in the step of sardine nickel plating, the sardine nickel plating solution formulation comprises: nickel sulfate pentahydrate: 500-560 g/l, nickel chloride: 25-35 g/l of boric acid: 40-50 g/l of a nonionic surfactant; the nonionic surfactant includes: opening the cylinder agent: the volume ratio is 32-36 ml/liter, and the auxiliary agent: the volume ratio is 4.0-6.0 ml/liter, and the sand agent: the volume ratio is 0.8-1.2 ml/liter.
7. The continuous electroplating process for nickel sardine as recited in claim 6 wherein the pot opener is a polyethylene glycol based compound; the auxiliary agent is a fatty alcohol-polyoxyethylene ester compound; the sand agent is polyoxyethylene alkyl amide compound.
8. The continuous electroplating process for nickel sardine according to claim 5, wherein in the water-cutting step, the water-cutting agent is a biosurfactant having a hydrophobic group.
9. The continuous electroplating process of sardine nickel as claimed in any of claims 5 to 8, wherein in the pretreatment step, ultrasonic degreasing → electrolytic degreasing → normal temperature water washing → acid washing → normal temperature water washing; wherein the current density during electrolytic degreasing is 6-10 ASD.
10. The continuous electroplating process of nickel sardine as claimed in any one of claims 5 to 8, wherein in the nickel preplating step, the current density is 8-15 ASD, the electroplating time is 5-10 seconds, and the nickel is washed with water at normal temperature.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113355672A (en) * | 2021-05-19 | 2021-09-07 | 成都宏明双新科技股份有限公司 | Electroplating process of aluminum alloy pier pressing part |
| CN115159590A (en) * | 2022-07-21 | 2022-10-11 | 江苏电子信息职业学院 | High-entropy transition metal oxyhydroxide and preparation method and application thereof |
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| CN1327090A (en) * | 2001-03-02 | 2001-12-19 | 武汉大学 | Additive for electroplating satin face nickel |
| CN207591695U (en) * | 2017-12-07 | 2018-07-10 | 东莞市亿源化工科技有限公司 | A kind of pearl nickel photo etching production mixing arrangement |
| CN109112583A (en) * | 2018-10-29 | 2019-01-01 | 清远信和汽车部件有限公司 | A kind of pearl nickel electroplating technique |
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2020
- 2020-12-29 CN CN202011585539.XA patent/CN112680754A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN1327090A (en) * | 2001-03-02 | 2001-12-19 | 武汉大学 | Additive for electroplating satin face nickel |
| CN207591695U (en) * | 2017-12-07 | 2018-07-10 | 东莞市亿源化工科技有限公司 | A kind of pearl nickel photo etching production mixing arrangement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113355672A (en) * | 2021-05-19 | 2021-09-07 | 成都宏明双新科技股份有限公司 | Electroplating process of aluminum alloy pier pressing part |
| CN115159590A (en) * | 2022-07-21 | 2022-10-11 | 江苏电子信息职业学院 | High-entropy transition metal oxyhydroxide and preparation method and application thereof |
| CN115159590B (en) * | 2022-07-21 | 2023-09-29 | 江苏电子信息职业学院 | High-entropy transition metal oxyhydroxide, and preparation method and application thereof |
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Application publication date: 20210420 |