CN111254469A - Nickel plating process - Google Patents
Nickel plating process Download PDFInfo
- Publication number
- CN111254469A CN111254469A CN201811452238.2A CN201811452238A CN111254469A CN 111254469 A CN111254469 A CN 111254469A CN 201811452238 A CN201811452238 A CN 201811452238A CN 111254469 A CN111254469 A CN 111254469A
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- CN
- China
- Prior art keywords
- nickel
- electroplating
- concentration
- roller
- solution
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- C25D5/10—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
- C25D5/14—Electroplating with more than one layer of the same or of different metals at least one layer being of nickel or chromium two or more layers being of nickel or chromium, e.g. duplex or triplex layers
-
- 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
- C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
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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 And Plating Baths Therefor (AREA)
Abstract
The invention discloses a nickel plating process, which comprises the following steps: 1) putting the built-in electroplating roller into primary nickel priming solution for roller electroplating; 2) then the built-in electroplating roller is placed into secondary nickel priming solution for roller electroplating; 3) and then the built-in electroplating roller is placed into the tertiary nickel priming solution for roller electroplating. The nickel plating process provided by the invention can enable the plating layer to be tightly combined on the fastener body, and has the advantages of good nickel plating effect, convenience in operation and low cost.
Description
Technical Field
The invention relates to a nickel plating process.
Background
The method for solving the problem of corrosion of metal fasteners such as screws, studs and the like is to plate zinc on the surface generally, but hydrogen embrittlement is easy to generate. Hydrogen embrittlement can lead to vibration fractures after the galvanized metal fastener is locked. While the chromium-containing stainless steel fastener is generally plated with nickel on the surface of the fastener for corrosion prevention, the plating layer is easy to fall off by the nickel plating process in the prior art, and the corrosion resistance effect of the plating layer is poor.
Disclosure of Invention
The invention mainly aims to provide a nickel plating process, which can enable a plating layer to be tightly combined on a fastener body, has a good nickel plating effect, is convenient to operate and reduces the cost.
In order to achieve the above purpose, the technical scheme adopted by the invention is to design a nickel plating process, which comprises the following steps:
1) placing the built-in electroplating roller into a primary nickel priming solution for roller electroplating, wherein the primary nickel priming solution consists of hydrochloric acid with the concentration of 150-;
2) then the built-in electroplating roller is placed into a secondary nickel priming solution for roller electroplating, the secondary nickel priming solution consists of boric acid with the concentration of 80-85g/L, nickel sulfate with the concentration of 300-350g/L, nickel chloride with the concentration of 60-65g/L, nickel iodide with the concentration of 10-25g/L, nickel molybdate with the concentration of 20-35g/L and water, the pH value of the solution is 0.5-1, the temperature of the solution is 25-30 ℃, the electroplating current density is 0.5-0.6 ampere/square decimeter, and the electroplating time is 20-25 min;
3) and then the built-in electroplating roller is placed into a tertiary nickel priming solution for roller electroplating, wherein the tertiary nickel priming solution consists of a blender with the concentration of 30-35mL/L, nickel chloride with the concentration of 250-270g/L, black nickel salt with the concentration of 200-250g/L, nickel aminosulfonate with the concentration of 150-200g/L and water, the pH value of the solution is 0.8-1.2, the electroplating voltage is 4-5V, and the electroplating time is 5-8 min.
The invention has the advantages and beneficial effects that: the nickel plating process can enable the plating layer to be tightly combined on the fastener body, and has the advantages of good nickel plating effect, convenient operation and low cost.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Example 1
A nickel plating process comprises the following steps:
1) the built-in electroplating roller is placed into primary nickel priming solution for roller electroplating, the primary nickel priming solution consists of hydrochloric acid with the concentration of 180g/L, nickel sulfamate with the concentration of 150g/L, nickel chloride with the concentration of 300g/L and water, the pH value of the solution is 1.5, the temperature of the solution is 40 ℃, the electroplating current density is 0.5 ampere/square decimeter, and the electroplating time is 30 min;
2) then, the built-in electroplating roller is placed into a secondary nickel priming solution for roller electroplating, the secondary nickel priming solution consists of boric acid with the concentration of 85g/L, nickel sulfate with the concentration of 350g/L, nickel chloride with the concentration of 65g/L, nickel iodide with the concentration of 10g/L, nickel molybdate with the concentration of 20g/L and water, the pH value of the solution is 1, the temperature of the solution is 30 ℃, the electroplating current density is 0.6 ampere/square decimeter, and the electroplating time is 25 min;
3) and then, placing the built-in electroplating roller into a tertiary nickel priming solution for roller electroplating, wherein the tertiary nickel priming solution consists of a blender with the concentration of 35mL/L, nickel chloride with the concentration of 270g/L, black nickel salt with the concentration of 250g/L, nickel sulfamate with the concentration of 150g/L and water, the pH value of the solution is 1.2, the electroplating voltage is 5V, and the electroplating time is 8 min.
Example 2
A nickel plating process comprises the following steps:
1) the built-in electroplating roller is placed into primary nickel priming solution for roller electroplating, the primary nickel priming solution consists of hydrochloric acid with the concentration of 150g/L, nickel sulfamate with the concentration of 180g/L, nickel chloride with the concentration of 250g/L and water, the pH value of the solution is 1, the temperature of the solution is 35 ℃, the electroplating current density is 0.4 ampere/square decimeter, and the electroplating time is 250 min;
2) then the built-in electroplating roller is placed into a secondary nickel priming solution for roller electroplating, the secondary nickel priming solution consists of boric acid with the concentration of 80-85g/L, nickel sulfate with the concentration of 300g/L, nickel chloride with the concentration of 60g/L, nickel iodide with the concentration of 25g/L, nickel molybdate with the concentration of 35g/L and water, the pH value of the solution is 0.5, the temperature of the solution is 25 ℃, the electroplating current density is 0.5 ampere/square decimeter, and the electroplating time is 20 min;
3) and then the built-in electroplating roller is placed into a tertiary nickel priming solution for roller electroplating, wherein the tertiary nickel priming solution consists of a blender with the concentration of 30mL/L, nickel chloride with the concentration of 250g/L, black nickel salt with the concentration of 200g/L, nickel sulfamate with the concentration of 180g/L and water, the pH value of the solution is 0.8, the electroplating voltage is 4V, and the electroplating time is 5 min.
Example 3
A nickel plating process comprises the following steps:
1) the built-in electroplating roller is placed into primary nickel priming solution for roller electroplating, the primary nickel priming solution consists of hydrochloric acid with the concentration of 160g/L, nickel sulfamate with the concentration of 200g/L, nickel chloride with the concentration of 280g/L and water, the pH value of the solution is 1.2, the temperature of the solution is 37 ℃, the electroplating current density is 0.45 ampere/square decimeter, and the electroplating time is 28 min;
2) then the built-in electroplating roller is placed into a secondary nickel priming solution for roller electroplating, the secondary nickel priming solution consists of boric acid with the concentration of 83g/L, nickel sulfate with the concentration of 340g/L, nickel chloride with the concentration of 63g/L, nickel iodide with the concentration of 15g/L, nickel molybdate with the concentration of 25g/L and water, the pH value of the solution is 0.7, the temperature of the solution is 27 ℃, the electroplating current density is 0.56 ampere/square decimeter, and the electroplating time is 23 min;
3) and then the built-in electroplating roller is placed into a tertiary nickel priming solution for roller electroplating, wherein the tertiary nickel priming solution consists of a blender with the concentration of 33mL/L, nickel chloride with the concentration of 260g/L, black nickel salt with the concentration of 230g/L, nickel sulfamate with the concentration of 200g/L and water, the pH value of the solution is 0.9, the electroplating voltage is 4.5V, and the electroplating time is 7 min.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A nickel plating process is characterized by comprising the following steps: placing the built-in electroplating roller into a primary nickel priming solution for roller electroplating, wherein the primary nickel priming solution consists of hydrochloric acid with the concentration of 150-; then the built-in electroplating roller is placed into a secondary nickel priming solution for roller electroplating, the secondary nickel priming solution consists of boric acid with the concentration of 80-85g/L, nickel sulfate with the concentration of 300-350g/L, nickel chloride with the concentration of 60-65g/L, nickel iodide with the concentration of 10-25g/L, nickel molybdate with the concentration of 20-35g/L and water, the pH value of the solution is 0.5-1, the temperature of the solution is 25-30 ℃, the electroplating current density is 0.5-0.6 ampere/square decimeter, and the electroplating time is 20-25 min; 3) and then the built-in electroplating roller is placed into a tertiary nickel priming solution for roller electroplating, wherein the tertiary nickel priming solution consists of a blender with the concentration of 30-35mL/L, nickel chloride with the concentration of 250-270g/L, black nickel salt with the concentration of 200-250g/L, nickel aminosulfonate with the concentration of 150-200g/L and water, the pH value of the solution is 0.8-1.2, the electroplating voltage is 4-5V, and the electroplating time is 5-8 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452238.2A CN111254469A (en) | 2018-11-30 | 2018-11-30 | Nickel plating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452238.2A CN111254469A (en) | 2018-11-30 | 2018-11-30 | Nickel plating process |
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| Publication Number | Publication Date |
|---|---|
| CN111254469A true CN111254469A (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811452238.2A Pending CN111254469A (en) | 2018-11-30 | 2018-11-30 | Nickel plating process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826689A (en) * | 2020-07-28 | 2020-10-27 | 翔声科技（厦门）有限公司 | Multi-stage nickel plating process |
| CN113403658A (en) * | 2021-06-18 | 2021-09-17 | 天长市曙光电子有限公司 | Solenoid valve coil nickel plating process |
-
2018
- 2018-11-30 CN CN201811452238.2A patent/CN111254469A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826689A (en) * | 2020-07-28 | 2020-10-27 | 翔声科技（厦门）有限公司 | Multi-stage nickel plating process |
| CN113403658A (en) * | 2021-06-18 | 2021-09-17 | 天长市曙光电子有限公司 | Solenoid valve coil nickel plating process |
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Application publication date: 20200609 |