CN108950627A - A kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method - Google Patents
A kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method Download PDFInfo
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- CN108950627A CN108950627A CN201810753849.4A CN201810753849A CN108950627A CN 108950627 A CN108950627 A CN 108950627A CN 201810753849 A CN201810753849 A CN 201810753849A CN 108950627 A CN108950627 A CN 108950627A
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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
- C25D5/34—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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
-
- 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
-
- 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
Abstract
The embodiment of the invention discloses a kind of chloride galvanizing+tin cobalt zinc ternary alloys for chromium process method, which comprises step 1: catholyte oil removing；Step 2: anode electrolysis oil removing；Step 3: first time wash water；Step 4: acid pickling and rust removing；Step 5: second of wash water；Step 6: alkaline electrolysis；Step 7: third time wash water；Step 8: acid electrolysis；Step 9: the 4th wash water；Step 10: zinc-plated；Step 11: the 5th wash water；Step 12: going out light；Step 13: the 6th wash water；Step 14: tin plating cobalt zinc ternary alloy；Step 15: the 7th wash water；Step 16: washing pure water；Step 17: drying；Step 18: spraying cold aqueous hardware gloss oil；Step 19: baking and curing.The generation chromium process small toxicity, wastewater treatment are simple；In addition, the current efficiency of the generation chromium process is higher；In addition, being applicable not only to the tiny workpiece of barrel plating formal layout, production efficiency can also be greatly promoted.
Description
Technical field
The present invention relates to technical field of chemistry, and in particular to a kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process
Method.
Background technique
In existing nickel plating+chromium process, since nickel, chromium are a kind of contaminated materials, existing nickel plating+chromium process
Toxicity it is big, it is seriously polluted；In addition, the current efficiency usually only 55% of the Cr-plating Bath in existing nickel plating+chromium process is left
The right side, current efficiency are lower；In addition, the covering power of the Cr-plating Bath in existing nickel plating+chromium process is poor, it is multiple in rack plating
The dead angle place of general labourer's part is difficult to plate, and especially small part is difficult to barrel plating；In addition, in existing nickel plating+chromium process, due to plating
Chromium solution existing defects itself, in production, can barrel plating small part chromium plating when mostly use rack plating greatly method, thus spend big
Working hour is measured, the promotion of production efficiency is hindered.
Summary of the invention
The embodiment of the present invention provides one kind to overcome above-mentioned technological deficiency present in existing nickel plating+chromium process
Chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method.
Wherein, a kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method, the method includes successively execute with
Lower step:
Step 1: catholyte oil removing；
Step 2: anode electrolysis oil removing；
Step 3: first time wash water；
Step 4: acid pickling and rust removing；
Step 5: second of wash water；
Step 6: alkaline electrolysis；
Step 7: third time wash water；
Step 8: acid electrolysis；
Step 9: the 4th wash water；
Step 10: zinc-plated；
Step 11: the 5th wash water；
Step 12: going out light；
Step 13: the 6th wash water；
Step 14: tin plating cobalt zinc ternary alloy；
Step 15: the 7th wash water；
Step 16: washing pure water；
Step 17: drying；
Step 18: spraying cold aqueous hardware gloss oil；
Step 19: baking and curing.
As an alternative embodiment, the step 1 meets the following conditions in the embodiment of the present invention:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 3-5min.
As an alternative embodiment, the step 2 meets the following conditions in the embodiment of the present invention:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 3-5min.
As an alternative embodiment, the water in the step 3 is normal-temperature water in the embodiment of the present invention；The step
Rapid 4 meet the following conditions:
Hydrochloric acid: water=1:2
Time: 2-3min.
As an alternative embodiment, the step 6 meets the following conditions in the embodiment of the present invention:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 2-3min.
As an alternative embodiment, the step 8 meets the following conditions in the embodiment of the present invention:
Sulfuric acid: 50-80ml/l；
Electric current: 3-5A/dm2；
Time: 5-10 seconds.
As an alternative embodiment, the step 10 meets the following conditions in the embodiment of the present invention: potassium chloride:
200-220g/l
Zinc chloride: 60-70g/l
Boric acid: 25-30g/l
Zinc softening agent: 30ml/l
Zinc gloss agent: 2ml/l
PH value: 4.8-5.5
Temperature: 15-35 DEG C
Electric current: 0.5-3.5A/dm2；
The step 12 meets the following conditions:
Nitric acid: 4-6g/l；
Time: 3-5 seconds.
As an alternative embodiment, the step 14 meets the following conditions in the embodiment of the present invention:
Potassium pyrophosphate: 220-280g/l；
Stannous chloride: 20-30g/l；
Cobalt chloride: 8-12g/l；
Zinc chloride: 5-10g/l；
For chrome additive: 20-30ml/l；
For chromium stabilizer: 4-8g/l；
PH value: 8.5-9.5；
Electric current: 0.1-2A/dm2；
Anode: pure tin plate；
The step 16 meets the following conditions:
Conductivity: 15us/cm or less.
As an alternative embodiment, the step 17 meets the following conditions in the embodiment of the present invention:
Temperature: 70 ± 5 DEG C；
Time: 20-30min；
The step 18 meets the following conditions:
Oil: water=1:1；
Viscosity: 9.5 seconds；
Electrostatic pressure: 0.1-0.2V；
Electrostatic current: 28 ± 1A；
Oil mass: 4-6HZ；
Reciprocating engine speed: 40HZ；
Bleed pressure: 500Pa or more；
Spraying swath pressure: 25-50Pa；
Revolving speed pressure: 25-50Pa.
As an alternative embodiment, the step 19 meets the following conditions in the embodiment of the present invention:
Temperature: 95 ± 5 DEG C；
Time: 20-30min.
In the embodiment of the present invention, chloride galvanizing+tin cobalt zinc ternary alloy is in chromium process (hereinafter referred to as chromium process)
Tin cobalt zinc be two, three pollutants, small toxicity, wastewater treatment is simple；In addition, for tin cobalt zinc ternary alloy plating solution in chromium process
Current efficiency up to 90% or more, current efficiency is higher；In addition, having well for tin cobalt zinc ternary alloy plating solution in chromium process
Dispersibility and covering power, be applicable not only to the tiny workpiece of barrel plating formal layout, production efficiency can also be greatly promoted.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to needed in the embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is a kind of stream of the chloride galvanizing+tin cobalt zinc ternary alloy disclosed by the embodiments of the present invention for chromium process method
Cheng Tu.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
It should be noted that the term " includes " of the embodiment of the present invention and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units not
Those of be necessarily limited to be clearly listed step or unit, but may include be not clearly listed or for these processes, side
The intrinsic other step or units of method, product or equipment.
Referring to Fig. 1, Fig. 1 is a kind of chloride galvanizing+tin cobalt zinc ternary alloy disclosed by the embodiments of the present invention for chromium work
The flow chart of process.As shown in Figure 1, the chloride galvanizing+tin cobalt zinc ternary alloy includes successively executing for chromium process method
Following steps:
Step 1: catholyte oil removing；
Step 2: anode electrolysis oil removing；
Step 3: first time wash water；
Step 4: acid pickling and rust removing；
Step 5: second of wash water；
Step 6: alkaline electrolysis；
Step 7: third time wash water；
Step 8: acid electrolysis；
Step 9: the 4th wash water；
Step 10: zinc-plated；
Step 11: the 5th wash water；
Step 12: going out light；
Step 13: the 6th wash water；
Step 14: tin plating cobalt zinc ternary alloy；
Step 15: the 7th wash water；
Step 16: washing pure water；
Step 17: drying；
Step 18: spraying cold aqueous hardware gloss oil；
Step 19: baking and curing.
As an alternative embodiment, the step 1 meets the following conditions in the embodiment of the present invention:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 3-5min.
As an alternative embodiment, the step 2 meets the following conditions in the embodiment of the present invention:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 3-5min.
As an alternative embodiment, the water in the step 3 is normal-temperature water in the embodiment of the present invention；The step
Rapid 4 meet the following conditions:
Hydrochloric acid: water=1:2
Time: 2-3min.
As an alternative embodiment, the step 6 meets the following conditions in the embodiment of the present invention:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 2-3min.
As an alternative embodiment, the step 8 meets the following conditions in the embodiment of the present invention:
Sulfuric acid: 50-80ml/l；
Electric current: 3-5A/dm2；
Time: 5-10 seconds.
As an alternative embodiment, the step 10 meets the following conditions in the embodiment of the present invention:
Potassium chloride: 200-220g/l
Zinc chloride: 60-70g/l
Boric acid: 25-30g/l
Zinc softening agent: 30ml/l
Zinc gloss agent: 2ml/l
PH value: 4.8-5.5
Temperature: 15-35 DEG C
Electric current: 0.5-3.5A/dm2；
The step 12 meets the following conditions:
Nitric acid: 4-6g/l；
Time: 3-5 seconds.
As an alternative embodiment, the step 14 meets the following conditions in the embodiment of the present invention:
Potassium pyrophosphate: 220-280g/l；
Stannous chloride: 20-30g/l；
Cobalt chloride: 8-12g/l；
Zinc chloride: 5-10g/l；
For chrome additive: 20-30ml/l；
For chromium stabilizer: 4-8g/l；
PH value: 8.5-9.5；
Electric current: 0.1-2A/dm2；
Anode: pure tin plate；
The step 16 meets the following conditions:
Conductivity: 15us/cm or less.
As an alternative embodiment, the step 17 meets the following conditions in the embodiment of the present invention:
Temperature: 70 ± 5 DEG C；
Time: 20-30min；
The step 18 meets the following conditions:
Oil: water=1:1；
Viscosity: 9.5 seconds；
Electrostatic pressure: 0.1-0.2V；
Electrostatic current: 28 ± 1A；
Oil mass: 4-6HZ；
Reciprocating engine speed: 40HZ；
Bleed pressure: 500Pa or more；
Spraying swath pressure: 25-50Pa；
Revolving speed pressure: 25-50Pa.
As an alternative embodiment, the step 19 meets the following conditions in the embodiment of the present invention:
Temperature: 95 ± 5 DEG C；
Time: 20-30min.
Chloride galvanizing disclosed by the embodiments of the present invention+tin cobalt zinc ternary alloy for chromium process method with it is existing
Nickel plating+chromium process is compared to relatively as follows:
1, pollute environment: a kind of pollution of nickel, chromium in existing nickel plating+chromium process, toxicity is big, seriously polluted, and chlorine
Compound is zinc-plated+and tin cobalt zinc ternary alloy for the tin cobalt zinc in chromium process (hereinafter referred to as chromium process) is two, three pollutants, poison
Property is small, and wastewater treatment is simple.
2, energy consumption is high: in existing nickel plating+chromium process, when nickel plating, needs to be heated up to 50-60 DEG C, so that thermal energy is consumed, and
For in chromium process room temperature is sufficient.
3, current efficiency is low: in existing nickel plating+chromium process, the current efficiency of Cr-plating Bath only has 55% or so, and generation
The current efficiency of tin cobalt zinc ternary alloy plating solution is up to 90% or more in chromium process.
4, covering power is poor: multiple when rack plating because the covering power of Cr-plating Bath is poor in existing nickel plating+chromium process
The dead angle place of general labourer's part is difficult to plate, and especially small part is difficult to barrel plating, and for tin cobalt zinc ternary alloy plating solution in chromium process
Above-mentioned problem is overcome with its good dispersibility and covering power.
5, production efficiency is low: due to Cr-plating Bath existing defects itself in existing nickel plating+chromium process, in production, can roll
The method for mostly using rack plating greatly when the small part chromium plating of plating.Thus a large amount of working hours are spent, hinder the promotion of production efficiency, together
When also increase certain human cost, and for tin cobalt zinc ternary alloy plating solution in chromium process with it with its good dispersibility
It is suitable for the tiny workpiece of barrel plating formal layout with covering power, to greatly promote production efficiency.
6, the cost of raw material: (such as salt spray test) is assessed by workpiece quality requirement, workpiece surface plates 8 microns of zinc layers workpiece
4 millimeters of nickel layer is plated on surface, and salt spray test rating is suitable, and the two cost of raw material is compared as follows:
With zinc-plated 8 microns of 1 square metre of workpiece surface compared with 1 square metre 4 microns of workpiece surface nickel plating
(weight=density X volume, note: current efficiency is based on 100%)
(zine plate: current market price: 28 yuan/kilogram, nickel plate: current market price: 101 yuan/kilogram)
It is zinc-plated: 1 X8 microns of ㎡ X7.14g/cm3X28 member/Kg=1.6 member
Nickel plating: 1 X4 microns of ㎡ X8.91g/cm3X101 member/Kg=3.6 member
In conclusion adapting to the requirement of current national environmental protection and clean manufacturing for chromium process, while it can get apparent warp
Benefit of helping and environmental protection effect.
A kind of chloride galvanizing+tin cobalt zinc ternary alloy disclosed by the embodiments of the present invention is carried out for chromium process method above
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of chloride galvanizing+tin cobalt zinc ternary alloy is for chromium process method, which is characterized in that the method includes successively holding
Row following steps:
Step 1: catholyte oil removing；
Step 2: anode electrolysis oil removing；
Step 3: first time wash water；
Step 4: acid pickling and rust removing；
Step 5: second of wash water；
Step 6: alkaline electrolysis；
Step 7: third time wash water；
Step 8: acid electrolysis；
Step 9: the 4th wash water；
Step 10: zinc-plated；
Step 11: the 5th wash water；
Step 12: going out light；
Step 13: the 6th wash water；
Step 14: tin plating cobalt zinc ternary alloy；
Step 15: the 7th wash water；
Step 16: washing pure water；
Step 17: drying；
Step 18: spraying cold aqueous hardware gloss oil；
Step 19: baking and curing.
2. the method according to claim 1, wherein the step 1 meets the following conditions:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 3-5min.
3. according to the method described in claim 2, it is characterized in that, the step 2 meets the following conditions:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 3-5min.
4. according to the method described in claim 3, it is characterized in that, the water in the step 3 is normal-temperature water；The step 4 is full
Sufficient the following conditions:
Hydrochloric acid: water=1:2
Time: 2-3min.
5. according to the method described in claim 4, it is characterized in that, the step 6 meets the following conditions:
Electrolytic degreasing powder: 80-100g/l；
Sodium hydroxide: 5-10g/l；
Temperature: 50-60 DEG C；
Electric current: 4-8A/dm2；
Time: 2-3min.
6. according to the method described in claim 5, it is characterized in that, the step 8 meets the following conditions:
Sulfuric acid: 50-80ml/l；
Electric current: 3-5A/dm2；
Time: 5-10 seconds.
7. according to the method described in claim 6, it is characterized in that, the step 10 meets the following conditions:
Potassium chloride: 200-220g/l
Zinc chloride: 60-70g/l
Boric acid: 25-30g/l
Zinc softening agent: 30ml/l
Zinc gloss agent: 2ml/l
PH value: 4.8-5.5
Temperature: 15-35 DEG C
Electric current: 0.5-3.5A/dm2；
The step 12 meets the following conditions:
Nitric acid: 4-6g/l；
Time: 3-5 seconds.
8. the method according to the description of claim 7 is characterized in that the step 14 meets the following conditions:
Potassium pyrophosphate: 220-280g/l；
Stannous chloride: 20-30g/l；
Cobalt chloride: 8-12g/l；
Zinc chloride: 5-10g/l；
For chrome additive: 20-30ml/l；
For chromium stabilizer: 4-8g/l；
PH value: 8.5-9.5；
Electric current: 0.1-2A/dm2；
Anode: pure tin plate；
The step 16 meets the following conditions:
Conductivity: 15us/cm or less.
9. according to the method described in claim 8, it is characterized in that, the step 17 meets the following conditions:
Temperature: 70 ± 5 DEG C；
Time: 20-30min；
The step 18 meets the following conditions:
Oil: water=1:1；
Viscosity: 9.5 seconds；
Electrostatic pressure: 0.1-0.2V；
Electrostatic current: 28 ± 1A；
Oil mass: 4-6HZ；
Reciprocating engine speed: 40HZ；
Bleed pressure: 500Pa or more；
Spraying swath pressure: 25-50Pa；
Revolving speed pressure: 25-50Pa.
10. according to the method described in claim 9, it is characterized in that, the step 19 meets the following conditions:
Temperature: 95 ± 5 DEG C；
Time: 20-30min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151873A (en) * | 2021-04-27 | 2021-07-23 | 深圳市通之泰科技有限公司 | Process method for improving electroplating corrosion resistance |
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| CN113151873A (en) * | 2021-04-27 | 2021-07-23 | 深圳市通之泰科技有限公司 | Process method for improving electroplating corrosion resistance |
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