CN109457277A - A kind of high brightness plating hard chrome additive and its production method - Google Patents
A kind of high brightness plating hard chrome additive and its production method Download PDFInfo
- Publication number
- CN109457277A CN109457277A CN201811490676.8A CN201811490676A CN109457277A CN 109457277 A CN109457277 A CN 109457277A CN 201811490676 A CN201811490676 A CN 201811490676A CN 109457277 A CN109457277 A CN 109457277A
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- Prior art keywords
- acid
- sodium
- additive
- high brightness
- acylate
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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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/08—Deposition of black chromium, e.g. hexavalent chromium, CrVI
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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
- C25D3/04—Electroplating: Baths therefor from solutions of chromium
- C25D3/10—Electroplating: Baths therefor from solutions of chromium characterised by the organic bath constituents used
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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 kind of high brightness plating hard chrome additive and its production methods, the formula for producing every liter of additive is, 50-200g acylate, 10-50g organic acid, 1-10g buffer, 0-5g wetting agent, acylate include one of this sodium sulfonate, sodium acetate, sulfamic acid sodium, Sodium Glycinate, tannic acid sodium or several compounding；Organic acid includes one of citric acid, methane sulfonic acid, acetic acid, sulfamic acid or several compounding.The present invention is that high brightness plating hard chrome additive is prepared in base stock with acylate, organic acid, buffer etc., and composition of raw materials is simple, widely used；Its deposition velocity is speeded simultaneously, can be effectively improved current efficiency, be greatly shortened electroplating time；Coating micro-crack is low, and ductility of electrodeposited film is excellent, can effectively prevent high current area layers of chrome peeling；Coating crystallization is fine and smooth, and hardness is up to 1000HV or more, and coating surface brightness is high, and porosity is low, and internal stress is small, can effectively reduce the generation of grain boundary corrosion.
Description
Technical field
The present invention relates to technical field of surface, and in particular to additive and its life in a kind of industries such as gravure plating
Production method.
Background technique
Electronic engraving is carried out after grinding and polishing after the industries such as gravure plating, layers of copper plating, carries out plating after engraving hard
Chromium processing, hardness, brightness, the wearability of chrome layer directly affect the service life of printing effect and roller.Layers of copper is measured at present
The means of performance are mainly supersonic hardness method, practice have shown that, coating of the chromium hardness in 750-850HV is ideal.
Intaglio plate routine chromium plating at present is to be electroplated with chromic anhydride for basic ingredient, using sulfuric acid as catalyst, cathode efficiency one
As only 10-15%, coating hardness 700-800HV, the general layer white haze shape of coating surface.General chrome additive on the market is added,
Cathode efficiency can be increased to 17%-20%, and hardness also has and can be promoted to 750-850HV, and just colourless mist is mitigated coating, at half
It is bright.However, associated additives main component currently on the market is organic acid or acylate, to layers of chrome hardness and cathode
Efficiency all has a certain upgrade, but helps less brightness, not ideal enough so as to improve the quality of product.
Summary of the invention
The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, provide, a kind of crystallization of coating is fine and smooth, hardness
Reach the high brightness plating hard chrome additive that super mirror effect, porosity are low, internal stress is small up to 1000HV or more, coating surface
And its production method.
In order to solve the above technical problems, the present invention adopts the following technical scheme: a kind of high brightness be electroplated hard chrome additive,
Be characterized in that: its formula is as follows, production every liter of additive formulation dosage be, 50-200g acylate, 10-50g organic acid,
The wetting agent of 1-10g buffer, 0-5g, wherein acylate includes this sodium sulfonate, sodium acetate, sulfamic acid sodium, amion acetic acid
One of sodium, tannic acid sodium or any several compounding；Organic acid includes citric acid, methane sulfonic acid, acetic acid, sulfamic acid
One of or any several compounding (arbitrary proportion).
Preferably, the buffer includes that one of boric acid, sodium citrate, lactic acid or any several compounding (are appointed
Meaning ratio).
Preferably, the wetting agent is at least one of glycerol, ethylene glycol, polyethylene glycol, ethyl alcohol or several combination.
A kind of production method of high brightness plating hard chrome additive, it is characterised in that: the formula of every liter of additive of production is used
Amount is, 50-200g acylate, 10-50g organic acid, 1-10g buffer, 0-5g wetting agent, wherein acylate includes this
One of sodium sulfonate, sodium acetate, sulfamic acid sodium, Sodium Glycinate, tannic acid sodium or any several compounding；Organic acid
Including one of citric acid, methane sulfonic acid, acetic acid, sulfamic acid or any several compounding；Specific production process is,
The deionized water of total amount of preparation 60% is weighed in container, is successively weighed into container and acylate is added, organic acid, delays
Electuary, wetting agent stir 5 minutes after being all added, and then constant volume to preset capacity, stirs again, need by practical
It asks and is dispensed.
Preferably, the buffer includes that one of boric acid, sodium citrate, lactic acid or any several compounding (are appointed
Meaning ratio).
The present invention, for base stock, then is incorporated corresponding additive with acylate, organic acid, buffer etc., then with its spy
Third generation efficient high brightness plating hard chrome additive is prepared in fixed technique, and not only preparation process is simple for the addition, Er Qieyuan
Material formula is simple, widely used, is able to satisfy the workpiece of various fields (such as intaglio plate, piston rod, crystallizer, damper, mold)
Interior exocoel plating hard chrome requirement, and excellent electroplating quality can be obtained；Its deposition velocity is speeded simultaneously, can effectively improve electric current effect
Rate greatly shortens electroplating time, to reduce cost；Coating micro-crack is low, to the physical protection function admirable of layers of chrome；Coating is tough
Property is excellent, can effectively prevent high current area layers of chrome peeling failure；Coating crystallization is fine and smooth, and hardness is up to 1000HV or more, coating table
Face reaches super mirror effect, and porosity is low, and internal stress is small, can effectively reduce the generation of grain boundary corrosion；Technique wants equipment
Ask uncomplicated, performance is stable, easy to operate, easy to maintain.
Specific embodiment
It is described further With reference to embodiment:
Embodiment 1
The production method of hard chrome additive is electroplated in the high brightness, carries out according to the following steps,
1), ingredient: this sodium sulfonate 50g, sulfamic acid 10g, boric acid 1g, deionized water 600g；
2), preparation process: deionized water is placed in container, successively weighs into container and this sodium sulfonate, sulfamic acid and boron is added
Acid stirs 5 minutes after being all added, and then constant volume to preset capacity, stirs again, is divided by actual demand
Dress.
Embodiment 2
The production method of hard chrome additive is electroplated in the high brightness, carries out according to the following steps,
1), ingredient: sodium acetate and sulfamic acid sodium compounding (ratio 1:1) 100g, methane sulfonic acid and acetic acid compounding (ratio 2:
1) 20g, sodium citrate 6g, glycerol 1g, deionized water 600g；
2), preparation process: deionized water is placed in container, and addition compounding sodium acetate and sulfamic acid are successively weighed into container
Sodium, compounding methane sulfonic acid and acetic acid, sodium citrate and wetting agent stir 5 minutes after being all added, and then constant volume holds to default
Amount, stirs again, is dispensed by actual demand.
Embodiment 3
The production method of hard chrome additive is electroplated in the high brightness, carries out according to the following steps,
1), ingredient: Sodium Glycinate 150g, methane sulfonic acid 50g, lactic acid 10g, ethylene glycol 5g, distilled water 600g；
2), preparation process: deionized water is placed in container, successively weighs into container and Sodium Glycinate, methane sulfonic acid, cream is added
Acid and wetting agent stir 5 minutes after being all added, and then constant volume to preset capacity, stirs again, by actual demand
It is dispensed.
Embodiment 4
The production method of hard chrome additive is electroplated in the high brightness, carries out according to the following steps,
1), ingredient: tannic acid sodium and this sodium sulfonate compound (ratio 1:3) 200g, citric acid 35g, sodium citrate 8g, poly- second two
Pure and mild ethyl alcohol compounds (ratio 1:2) 3g, deionized water 600g；
2), preparation process: deionized water is placed in container, and addition compounding tannic acid sodium and this sulfonic acid are successively weighed into container
Sodium, citric acid, sodium citrate and wetting agent stir 5 minutes after being all added, and then constant volume to preset capacity, is sufficiently stirred again
It mixes uniformly, is dispensed by actual demand.
Test parameter
| Current efficiency | Micro-crack quantity | Crackle situation | Porosity | |
| Not doping | 11-13% | 100-200/cm2 | Big crackle | 3-5% |
| Doping | 20-27% | 400-600/cm2 | Micro-crack | 0.5-0.9% |
The above has been described in detail, described above, is only a preferred embodiment of the present invention, when cannot limit
Practical range of the invention, i.e., it is all according to the made equivalent changes and modifications of the application range, it should still belong in covering scope of the present invention.
Claims (5)
1. hard chrome additive is electroplated in a kind of high brightness, it is characterised in that: its formula is as follows, produces the formulation dosage of every liter of additive
For, 50-200g acylate, 10-50g organic acid, 1-10g buffer, 0-5g wetting agent, wherein acylate includes this sulphur
One of sour sodium, sodium acetate, sulfamic acid sodium, Sodium Glycinate, tannic acid sodium or any several compounding；Organic acid packet
Include one of citric acid, methane sulfonic acid, acetic acid, sulfamic acid or any several compounding.
2. hard chrome additive is electroplated in high brightness according to claim 1, it is characterised in that: the buffer include boric acid,
One of sodium citrate, lactic acid or any several compounding.
3. hard chrome additive is electroplated in high brightness according to claim 1, it is characterised in that: the wetting agent is glycerol, second
At least one of glycol, polyethylene glycol, ethyl alcohol or several combination.
4. a kind of production method of high brightness plating hard chrome additive, it is characterised in that: the formulation dosage of every liter of additive of production
For, 50-200g acylate, 10-50g organic acid, 1-10g buffer, 0-5g wetting agent, wherein acylate includes this sulphur
One of sour sodium, sodium acetate, sulfamic acid sodium, Sodium Glycinate, tannic acid sodium or any several compounding；Organic acid packet
Include one of citric acid, methane sulfonic acid, acetic acid, sulfamic acid or any several compounding；Specific production process is,
The deionized water of total amount of preparation 60% is weighed in container, is successively weighed into container and acylate is added, organic acid, delays
Electuary, wetting agent stir 5 minutes after being all added, and then constant volume to preset capacity, stirs again, need by practical
It asks and is dispensed.
5. the production method of high brightness plating hard chrome additive according to claim 4, it is characterised in that: the buffer
Including one of boric acid, sodium citrate, lactic acid or any several compounding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490676.8A CN109457277A (en) | 2018-12-07 | 2018-12-07 | A kind of high brightness plating hard chrome additive and its production method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811490676.8A CN109457277A (en) | 2018-12-07 | 2018-12-07 | A kind of high brightness plating hard chrome additive and its production method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH673845A5 (en) * | 1987-07-02 | 1990-04-12 | Sosh Ag | Synergistic additive mixt. for chromic acid electrolyte - contg. propionic, butyric and valeric acid in specified ratio |
| CN103757667A (en) * | 2014-01-01 | 2014-04-30 | 安庆市亿豪工贸发展有限公司 | Chrome plating additive and electroplating liquid thereof |
| CN107779918A (en) * | 2017-10-27 | 2018-03-09 | 桐城运城制版有限公司 | A kind of intaglio plate additive for chrome-plating |
| CN108456898A (en) * | 2018-06-25 | 2018-08-28 | 厦门大学 | A kind of low-concentration sulfuric acid salt trivalent chromium rapid chrome plating electroplate liquid and preparation method thereof |
-
2018
- 2018-12-07 CN CN201811490676.8A patent/CN109457277A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH673845A5 (en) * | 1987-07-02 | 1990-04-12 | Sosh Ag | Synergistic additive mixt. for chromic acid electrolyte - contg. propionic, butyric and valeric acid in specified ratio |
| CN103757667A (en) * | 2014-01-01 | 2014-04-30 | 安庆市亿豪工贸发展有限公司 | Chrome plating additive and electroplating liquid thereof |
| CN107779918A (en) * | 2017-10-27 | 2018-03-09 | 桐城运城制版有限公司 | A kind of intaglio plate additive for chrome-plating |
| CN108456898A (en) * | 2018-06-25 | 2018-08-28 | 厦门大学 | A kind of low-concentration sulfuric acid salt trivalent chromium rapid chrome plating electroplate liquid and preparation method thereof |
Non-Patent Citations (7)
| Title |
|---|
| 乔延江: "《中药制剂学》", 30 April 2017, 中国协和医科大学出版社 * |
| 任广军等: "《电镀工艺学》", 31 December 2016, 国建材工业出版社 * |
| 唐振球等: "《化工小商品生产法 第4集》", 30 April 1980, 湖南科学技术出版社 * |
| 张允诚当: "《电镀手册》", 31 December 2011, 国防工业出版社 * |
| 曾华梁等: "《电镀工艺手册》", 31 August 1997, 机械工业出版社 * |
| 王启桥等: "三价铬硫酸盐溶液镀硬铬的辅助配位剂研究", 《电镀与涂饰》 * |
| 胡如南等: "《实用镀铬技术》", 31 July 2005, 国防工业出版社 * |
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