CN102400197A - Electrophoresis technology for replacing electrofacing - Google Patents
Electrophoresis technology for replacing electrofacing Download PDFInfo
- Publication number
- CN102400197A CN102400197A CN2010102825299A CN201010282529A CN102400197A CN 102400197 A CN102400197 A CN 102400197A CN 2010102825299 A CN2010102825299 A CN 2010102825299A CN 201010282529 A CN201010282529 A CN 201010282529A CN 102400197 A CN102400197 A CN 102400197A
- Authority
- CN
- China
- Prior art keywords
- electrophoresis
- workpiece
- coating
- solution
- temperature
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses an electrophoresis technology for replacing electrofacing. The electrophoresis technology for replacing electrofacing comprises the following steps of 1, before electrophoresis, carrying out pretreatment on a workpiece through the processes of oil removal, hot washing, rust removal, cold washing, phosphatization, re-washing and passivation, and checking and determining if all parameters of solutions in equipment and an electrophoresis tank are normal or not, 2, putting the pretreated workpiece into the electrophoresis tank with a buffer solution, enabling the pretreated workpiece to rotate, adjusting voltage, currents and an electric power scope, and starting a coating supplement device, and 3, after electrophoresis, turning a power supply off, stopping the workpiece which is rotating, taking out the stopped workpiece, washing by clear water and drying by an oven, wherein in the oil removal, solution steam is utilized for heating; a hot washing temperature is 60 DEG C; a rust removal solution used in the rust removal is an acidic solution; a flowing cold water is utilized in the cold washing; the phosphatization allows a middle temperature of 60 DEG C; voltage is inversely proportional to a solution coating solid ratio and a coating temperature; and voltage is proportional to a distance between two poles. The electrophoresis technology for replacing electrofacing has the advantages of good coating effects, high cost performance, water-solubility, no toxicity, easiness of automatic control, and environmentally friendly characteristics.
Description
Technical field
The present invention relates to a kind of coating process, refer in particular to a kind of coating process that replaces electroplating technology through electrophoretic technique.
Background technology
Plating because of its can strengthen metal erosion resistance (coated metal adopts corrosion resistant metal more), increase hardness, prevent abrasion, improve electroconductibility, oilness, thermotolerance and surface aesthetic and be used widely.
At present, it is big generally to electroplate high low potential place coating thickness gap, can not stretch into the shelter; Influence the yield of product, in addition in process of production, can produce various trade effluents; Contain heavy metal ion such as a large amount of hydrochloric acid and zinc, copper and organic brightening agent etc. in these waste water; Toxicity is bigger, and some also contains carcinogenic, teratogenesis, mutagenic highly toxic substance, and is very harmful to the mankind.If electroplating wastewater is not conscientiously recycled, can pollute environment, harm humans is healthy.
Summary of the invention
For addressing the above problem, the present invention provides a kind of painting effect good, nontoxic, is easy to control, and cost performance is high, and the electrophoresis of environmental protection replaces galvanized coating process.
For realizing above-mentioned purpose, the present invention adopts following technical scheme to be: this process step is following:
One, before the electrophoresis workpiece is carried out oil removing, hot water wash, rust cleaning, cold wash, phosphatization, the pre-treatment of hot water wash, passivation again, inspection confirms that the parameters of solution in equipment and the electrophoresis chamber is normal;
Two, pre-treatment is good workpiece is put into the electrophoresis chamber that is equipped with damping fluid, and makes its rotation, opening power equipment, and adjustment voltage, electric current and power range thereof, the coating supplementing device is opened;
Three, after electrophoresis finishes, powered-down, workpiece is taken out in the workpiece stall, cleans and oven dry with clear water;
Said oil removing is heated with solution vapor; Said hot water wash is temperature required at 60 ℃, and the required rust cleaning liquid of said rust cleaning is acidic solution, the said cold wash cold water flush that flows; Said phosphatization is used middle temperature phosphating; Its phosphatization temperature is 60 ℃, and the solids constituent of coating and lacquer temperature are inversely proportional in said voltage and the solution, are directly proportional with two interpole gaps.
The solution of said oil removing is thermokalite property electrochemical deoiling liquid, and said acidic solution is sulfuric acid or hydrochloric acid.
Said voltage is 40～70V in steel surface, and aluminium and aluminum alloy surface adopt 60～100V, and galvanized workpiece adopts 70～85V.
In electrophoresis process, the electrophoresis time of common workpiece is 1～3min, and large-scale workpiece is 3～4min.
The solids constituent of said coating is controlled at 10%～15% through zero(ppm) water, and the pH value of coating is controlled at 7.5～8.5.
After said electrophoresis finished, the temperature oven dry of having cleaned workpiece was (165 ± 5) ℃.
Beneficial effect of the present invention is: electrophoretic painting is through the workpiece that is deposited on of macromolecule resin; The high low potential thickness of its enamelled coating is even; Can cover the shelter fully, painting effect is good, replaces goods such as traditional electrical bronzing, brass, imitative silver, imitative husky nickel, bronze; Contain all kinds of heavy metals, deficiency that cost is high to overcome the traditional electrical depositing process, cost performance is high; Be to rely on the physics chemical action that electric field produced in addition; Have water-soluble, nontoxic, be easy to characteristics such as automatically control, reduce pollution, the more effective pollution that prevents heavy metal to environment of ability to water quality and air; Environmental protection more helps the development of the mankind and society thereof.
Embodiment
The present invention replaces electroplating technology about a kind of electrophoresis, and this process step is following:
One, before the electrophoresis workpiece is carried out oil removing, hot water wash, rust cleaning, cold wash, phosphatization, the pre-treatment of hot water wash, passivation again, inspection confirms that the parameters of solution in equipment and the electrophoresis chamber is normal;
Two, pre-treatment is good workpiece is put into the electrophoresis chamber that is equipped with damping fluid, and makes its rotation, opening power equipment, and adjustment voltage, electric current and power range thereof, the coating supplementing device is opened;
Three, after electrophoresis finishes, powered-down, workpiece is taken out in the workpiece stall, cleans and oven dry with clear water;
Its oil removing is heated with solution vapor, and hot water wash is temperature required at 60 ℃, and the required rust cleaning liquid that eliminates rust is acidic solution; The cold wash cold water flush that flows, phosphatization is used middle temperature phosphating, and its phosphatization temperature is 60 ℃; The solids constituent of coating and lacquer temperature are inversely proportional in voltage and the solution, are directly proportional with two interpole gaps.
Disclosed a kind of electrophoresis replaces electroplating technology, and the solution of its oil removing is thermokalite property electrochemical deoiling liquid, and said acidic solution is sulfuric acid or hydrochloric acid.
Disclosed a kind of electrophoresis replaces electroplating technology, and its voltage is 40～70V in steel surface, and aluminium and aluminum alloy surface adopt 60～100V, and galvanized workpiece adopts 70～85V.
Disclosed a kind of electrophoresis replaces electroplating technology, and it is in electrophoresis process, and the electrophoresis time of common workpiece is 1～3min, and large-scale workpiece is 3～4min.
Disclosed a kind of electrophoresis replaces electroplating technology, and the solids constituent of its coating is controlled at 10%～15% through zero(ppm) water, and the pH value of coating is controlled at 7.5～8.5.
Disclosed a kind of electrophoresis replaces electroplating technology, and after its electrophoresis finished, the temperature oven dry of having cleaned workpiece was (165 ± 5) ℃.
Below the present invention is further described, its specific embodiment is following:
Embodiment 1: with common steel-iron components is example
Before the electrophoresis, to the oil removing of common steel-iron components steam heating,,, after the cold water flow wash,, use 60 ℃ of hot water wash post-passivations again with 60 ℃ of middle temperature phosphatings with hydrochloride derusting then with 60 ℃ of hot water wash with thermokalite property electrochemical deoiling liquid; Equipment is checked, guaranteed in the electrophoresis chamber in the solution pH value of coating 7.5, the solids constituent of coating is 10%, the mid-damping fluid of electrophoresis chamber.
The common steel-iron components of handling well is put into electrophoresis chamber, make its rotation, opening power equipment; Voltage is adjusted to 40V, and electrophoresis time 1min is set, and opens the coating supplementing device; In the electrophoresis process, through zero(ppm) water the solids constituent of coating is controlled at 10%, the pH value of coating is controlled at 7.5.
After electrophoresis finishes, powered-down, the workpiece stall is also taken out, after cleaning with clear water, in baking box, with (165 ± 5) ℃ oven dry.
Embodiment 2: with large-scale aluminum component is example
Before the electrophoresis, to the oil removing of large-scale aluminum component steam heating,,, after the cold water flow wash,, use 60 ℃ of hot water wash post-passivations again with 60 ℃ of middle temperature phosphatings with hydrochloride derusting then with 60 ℃ of hot water wash with thermokalite property electrochemical deoiling liquid; Equipment is checked, guaranteed in the electrophoresis chamber in the solution pH value of coating 8.5, the solids constituent of coating is 15%, the mid-damping fluid of electrophoresis chamber.
The large-scale aluminum component of handling well is put into electrophoresis chamber, make its rotation, opening power equipment; Voltage is adjusted to 100V, and electrophoresis time 4min is set, and opens the coating supplementing device; In the electrophoresis process, through zero(ppm) water the solids constituent of coating is controlled at 15%, the pH value of coating is controlled at 8.5.
After electrophoresis finishes, powered-down, the workpiece stall is also taken out, after cleaning with clear water, in baking box, with (165 ± 5) ℃ oven dry.
Embodiment 3: with common galvanized workpiece is example
Before the electrophoresis, to the oil removing of common galvanized workpiece steam heating,,, after the cold water flow wash,, use 60 ℃ of hot water wash post-passivations again with 60 ℃ of middle temperature phosphatings with sulphuric acid rust removal then with 60 ℃ of hot water wash with thermokalite property electrochemical deoiling liquid; Equipment is checked, guaranteed in the electrophoresis chamber in the solution pH value of coating 8, the solids constituent of coating is 12.5%, the mid-damping fluid of electrophoresis chamber.
The common galvanized workpiece of handling well is put into electrophoresis chamber, make its rotation, opening power equipment; Voltage is adjusted to 80V, and electrophoresis time 2min is set, and opens the coating supplementing device; In the electrophoresis process, through zero(ppm) water the solids constituent of coating is controlled at 12. 5%, the pH value of coating is controlled at 8.
After electrophoresis finishes, powered-down, the workpiece stall is also taken out, after cleaning with clear water, in baking box, with (165 ± 5) ℃ oven dry.
Beneficial effect of the present invention is: electrophoretic painting is through the workpiece that is deposited on of macromolecule resin; The high low potential thickness of its enamelled coating is even; Can cover the shelter fully, painting effect is good, replaces goods such as traditional electrical bronzing, brass, imitative silver, imitative husky nickel, bronze; Contain all kinds of heavy metals, deficiency that cost is high to overcome the traditional electrical depositing process, cost performance is high; Be to rely on the physics chemical action that electric field produced in addition; Have water-soluble, nontoxic, be easy to characteristics such as automatically control, reduce pollution, the more effective pollution that prevents heavy metal to environment of ability to water quality and air; Environmental protection more helps the development of the mankind and society thereof.
Above embodiment only is that preferred implementation of the present invention is described; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (6)
1. an electrophoresis replaces electroplating technology, and its process step is following:
One, before the electrophoresis workpiece is carried out oil removing, hot water wash, rust cleaning, cold wash, phosphatization, the pre-treatment of hot water wash, passivation again, inspection confirms that the parameters of solution in equipment and the electrophoresis chamber is normal;
Two, pre-treatment is good workpiece is put into the electrophoresis chamber that is equipped with damping fluid, and makes its rotation, opening power equipment, and adjustment voltage, electric current and power range thereof, the coating supplementing device is opened;
Three, after electrophoresis finishes, powered-down, workpiece is taken out in the workpiece stall, cleans and oven dry with clear water;
It is characterized in that: said oil removing is heated with solution vapor; Said hot water wash is temperature required at 60 ℃, and the required rust cleaning liquid of said rust cleaning is acidic solution, the said cold wash cold water flush that flows; Said phosphatization is used middle temperature phosphating; Its phosphatization temperature is 60 ℃, and the solids constituent of coating and lacquer temperature are inversely proportional in said voltage and the solution, are directly proportional with two interpole gaps.
2. a kind of electrophoresis according to claim 1 replaces electroplating technology, and it is characterized in that: the solution of said oil removing is thermokalite property electrochemical deoiling liquid, and said acidic solution is sulfuric acid or hydrochloric acid.
3. a kind of electrophoresis according to claim 1 replaces electroplating technology, and it is characterized in that: said voltage is 40～70V in steel surface, and aluminium and aluminum alloy surface adopt 60～100V, and galvanized workpiece adopts 70～85V.
4. a kind of electrophoresis according to claim 1 replaces electroplating technology, and it is characterized in that: in electrophoresis process, the electrophoresis time of common workpiece is 1～3min, and large-scale workpiece is 3～4min.
5. a kind of electrophoresis according to claim 1 replaces electroplating technology, and it is characterized in that: the solids constituent of said coating is controlled at 10%～15% through zero(ppm) water, and the pH value of coating is controlled at 7.5～8.5.
6. a kind of electrophoresis according to claim 1 replaces electroplating technology, it is characterized in that: after said electrophoresis finished, the temperature oven dry of having cleaned workpiece was (165 ± 5) ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102825299A CN102400197A (en) | 2010-09-16 | 2010-09-16 | Electrophoresis technology for replacing electrofacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102825299A CN102400197A (en) | 2010-09-16 | 2010-09-16 | Electrophoresis technology for replacing electrofacing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102400197A true CN102400197A (en) | 2012-04-04 |
Family
ID=45882822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102825299A Pending CN102400197A (en) | 2010-09-16 | 2010-09-16 | Electrophoresis technology for replacing electrofacing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102400197A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839374A (en) * | 2012-09-05 | 2012-12-26 | 业纮企业股份有限公司 | Surface treatment method of carbon steel sphere for ball valve |
| CN109837580A (en) * | 2017-11-29 | 2019-06-04 | 辽宁法库陶瓷工程技术研究中心 | A kind of coating method of cold screen high IR absorptivity coating |
| CN113430511A (en) * | 2021-05-29 | 2021-09-24 | 东莞市鹏为科技有限公司 | Surface treatment process for metal workpiece |
-
2010
- 2010-09-16 CN CN2010102825299A patent/CN102400197A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839374A (en) * | 2012-09-05 | 2012-12-26 | 业纮企业股份有限公司 | Surface treatment method of carbon steel sphere for ball valve |
| CN109837580A (en) * | 2017-11-29 | 2019-06-04 | 辽宁法库陶瓷工程技术研究中心 | A kind of coating method of cold screen high IR absorptivity coating |
| CN113430511A (en) * | 2021-05-29 | 2021-09-24 | 东莞市鹏为科技有限公司 | Surface treatment process for metal workpiece |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102124144B (en) | Successive corrosion-protecting pre-treatment of metal surfaces in a multi-step process | |
| CN107740085B (en) | A kind of composite coloured passivating solution of environment-friendly type and preparation method thereof | |
| CN108149179B (en) | Hot galvanizing production process for fastener | |
| CN106676538A (en) | Environment-friendly technology for copper and copper alloy surface treatment | |
| CN101773901A (en) | Method for improving property of dacromet coating on surface of metal member | |
| CN103481613A (en) | Coating composition used for containers and accessories and coating process | |
| CN104005063A (en) | Method for electroplating zinc and nickel alloy on steel work | |
| CN101135050B (en) | Metasilicate cleaning inactivating process | |
| CN101619473B (en) | Method for galvanizing workpiece surface for anticorrosion | |
| CN104069996B (en) | A kind of surface treatment method before aluminum products application | |
| CN102400197A (en) | Electrophoresis technology for replacing electrofacing | |
| CN109513596A (en) | A kind of production technology of zinc steel guard rail | |
| CN101054665A (en) | Electrolytic zinc plating and zinc-iron alloy silicate cleaning deactivation liquid | |
| CN101525747B (en) | Clean rare-earth salt passivation solution | |
| CN107574430A (en) | A kind of silicate bright blue passivation liquid and preparation method thereof | |
| KR20130043339A (en) | Electro-deposition coating method | |
| CN105381942A (en) | Car body coating method of novel nanometer pretreatment combining floating-coating-free water paint | |
| CN105951080B (en) | Aluminum alloy surface composite passivant and preparation method thereof | |
| CN101387003A (en) | Electrophoresis coating technique for fasteners | |
| CN112813468A (en) | Preparation method of super-hydrophobic double-layer anti-corrosion coating | |
| CN106011837A (en) | Environment-friendly type metal surface treatment technology | |
| CN101525748B (en) | Clean rare-earth salt passive film | |
| CN109385649A (en) | A kind of crisp acid cyanideless electro-plating zinc technology method of low hydrogen | |
| CN103849864A (en) | Galvanizing chrome-free iridescent passivation liquid as well as preparation and application methods thereof | |
| CN219603688U (en) | Galvanized silane chromium-free passivation coating structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |