CN86101215B - Technology for colouration of aluminium and its alloys - Google Patents
Technology for colouration of aluminium and its alloys Download PDFInfo
- Publication number
- CN86101215B CN86101215B CN86101215A CN86101215A CN86101215B CN 86101215 B CN86101215 B CN 86101215B CN 86101215 A CN86101215 A CN 86101215A CN 86101215 A CN86101215 A CN 86101215A CN 86101215 B CN86101215 B CN 86101215B
- Authority
- CN
- China
- Prior art keywords
- grams per
- coloring
- per liters
- electrolytic
- acid
- 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.)
- Expired
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
The present invention relates to an improvement of an aluminium or aluminium alloy coloring technology, which proposes an electrolytic coloring technology for coloring aluminium or aluminium alloy in the mauve series. The present invention carries out coloring in the direct current anodic oxidation and alternating current electrolysis mode. The electrolytic coloring liquid is made of the following components: 25 to 50 grams per liter of nickel sulfate, 8 to 15 grams per liter of copper sulfate, 20 to 40 grams per liter of orthoboric acid and 1 to 15 grams per liter of sulfamic acid. The technology proposed by the present invention is simple; the coloring liquid has the advantages of stable chemical performance, difficulty in turbidity and sediment, strong adaptability to temperature difference and low material cost. The novel pretreatment mode of the present invention can shorten the procedure and reduce the environment pollution.
Description
The invention relates to the improvement of aluminum or aluminum alloy coloring process.
Electrocolor process is with the anodised aluminium of the conventional sulfuric acid process of process, in containing the aqueous solution of metal-salt, carry out electrolysis treatment, under electric field action, metallic cation is infiltrated in the oxide pinhole, at pin hole bottom reduce deposition, reach a kind of method that makes oxidation film coloring.This colorize method can obtain the coloring film of good weatherability properties and wear resistance, can be widely used in the painted of various aluminiums such as aluminium windowframe for building.
General electrolytic colouring process flow mainly comprises pre-treatment, anodic oxidation, electrolytic coloring.Pre-treatment is made up of operations such as oil removing degreasing, alkaline etching, neutralizations usually.
At present, the coloring process of the red-purple series of aluminium has pink salt electrolytic coloring and nickel salt electrolytic coloring by the electrolyzation coloration solution classification.
A kind of coloring process of violet hue is proposed in the clear 59-140397 document.The anodic oxidation of aluminium is the alternating current-direct current eclipsed electrolysis treatment of carrying out tens different voltages in containing electrolytic solution such as sulfuric acid, thionamic acid, oxalic acid with random time ratio alternate repetition.In containing the electrolytic solution of pink salt, add direct current or voltage of alternating current then and carry out the electrolytic coloring processing.Because the formation of anode oxide film will adopt alternating current-direct current overlapping, so oxidation trough must have DC power system and AC power supply system, wants continuous back brake in the operation.And in the tin-salt solution, Sn
++Easily be oxidized to the Sn of non-coloring ability
+ 4, coloring liquid instability, easy muddy, precipitation, aging and scrap.And the cost of pink salt is higher.
A kind of electrolytic colouring technology of nickel salt is proposed among the clear 59-140396.Wherein the overlapping electrolysis treatment of alternating current-direct current is also adopted in the anodic oxidation of aluminium, obtain certain thickness oxide film after, in containing the electrolytic solution of nickel salt, add direct current again or the voltage of alternating current electrolytic coloring gets the purple coloring film.This technology has overcome the painted institute of pink salt inherent shortcoming, but because anodic oxidation still need be adopted the overlapping electrolysis of alternating current-direct current, so the required power supply of oxidation trough is still complicated.
The electrolytic colouring technology of a kind of aluminium and aluminium alloy is proposed in US 4042471 documents.This technology is to make the anodizing of aluminum or aluminum alloy direct current form oxide film earlier, and it is painted that anodized metal is exchanged in the electrolytic solution that contains two kinds of metal-salts and a kind of strong reducing compound at least.The electrolytic colouring technology that the document proposes can not obtain the red-purple film.
The objective of the invention is to propose the electrolytic colouring technology of an aluminum or aluminum alloy with red-purple series coloring film.
Another object of the present invention is the electrolytic colouring technology that proposes a simple red-purple series coloring film, only need adopt single power supply of planting during anodic oxidation.
Another purpose of the present invention is to propose a kind of electrolyzation coloration solution, this coloring liquid chemical stabilization, be difficult for muddy and precipitation, strong to temperature difference adaptability, raw materials cost is low.
The suitable aluminum or aluminum alloy that the present invention proposes with the electrolytic colouring technology of the serial coloring film of red-purple comprise pre-treatment, anodic oxidation, master operation such as electrolytic coloring in containing the aqueous solution of metal-salt.Adopt dc electrolyzing, exchange painted.
The pre-treatment of aluminium can be adopted general method, also can adopt the method for mentioning among the present invention, in the aqueous solution that contains nickel salt and mantoquita, adopt ac electrolytic coloring to handle different time behind the treated aluminium dc anodizing, can obtain the coloring film of red-purple series from shallow to deep.
It is single nickel salt 25～50 grams per liters that electrolytic colouring liquid is formed, copper sulfate 8～15 grams per liters, and boric acid 20～40 grams per liters, thionamic acid 1～15 grams per liter, coloring effect is better.
In order to accelerate colouring speed, improve the stability of tank liquor, reduce cost, the composition of electrolytic colouring liquid is single nickel salt 35～40 grams per liters, copper sulfate 9～11 grams per liters, boric acid 25～35 grams per liters, thionamic acid 3～9 grams per liters.
In order to shorten and simplify pretreatment procedure, reduce the environmental pollution of waste liquid, the aluminium volume ratio after degreasing is a phosphoric acid: sulfuric acid: nitric acid=5.2～4.8: 2.2～1.8: 3.2～2.8 mixing acid dipping can obtain same effect.
The pre-treatment of aluminium and aluminium alloy can be flooded in mixing acid after degreasing, washing, also can neutralize at acid tank after the etch in alkaline solution again.Be anode then with the aluminum or aluminum alloy, aluminium or lead are negative electrode, dc anodizing in the sulphuric acid soln of 150～160 grams per liters, and 10～14 volts of volts DSs, current density is 1.2～1.5 peace/decimetres
2, can reach more than 10 microns through 30～40 minutes oxide thickness.Containing ac electrolytic coloring in the aqueous solution of nickel salt and mantoquita through anodised aluminium, electrolyte temperature is 15～48 ℃, and the tank liquor pH value is 1.7～2.5, with a kind of utmost point of opposing in graphite, stainless steel, the nickel plate, 10～17 volts of voltage of alternating current, current density are 0.25～0.65 peace/decimetre
2, through 1-8 minute, just can obtain the coloring film of red-purple series, time expand, get the atropurpureus film, and thickness is not less than 13 microns.
When other processing condition were identical, voltage was high more painted dark more, and pollen can appear in the too high surface of voltage, long, big energy-consuming of too low painted time; Painted time lengthening darkens; The temperature of electrolytic solution is too low, and colouring speed is too slow, the too high heat energy that then consumes; The pH value of tank liquor is too high to be off color.
The electrolytic colouring technology that the present invention proposes is simple, and aluminium carries out dc anodizing after pre-treatment, and ac electrolytic coloring can obtain the good and serial coloring film of uniform red-purple of topped property.
Use nickel salt to add copper salt solution as electrolytic colouring liquid, tank liquor is difficult for taking place muddy and precipitation, chemical stabilization, and the test back is placed and still can be painted as usual in 2～3 months.Electrolytic colouring liquid is strong to temperature difference adaptability.Solution undergoes no deterioration between 15～48 ℃, so this technology is adapted at China's southern and northern various places use.
Compare with pink salt, the electrolytic colouring liquid cost that the present invention proposes has reduced more than 50%.
With mixing acid dipping replace in the general pre-treatment alkaline etching and in and two procedures, not only can simplify working process, and can reduce waste liquor contamination.
Further specify technology of the present invention with the following example.
One. aluminium alloy (6063) plate is immersed in 3-5%LCX-52 normal temperature oil removing aqueous cleaning agent (produces by Beijing special material factory of Beijing Inst. of Aeronautical Materials, mainly comprise tensio-active agent, washing assistant and corrosion inhibitor ingredient) in degreasing and clean after, be immersed in mixing acid (phosphoric acid: sulfate sulfatase: nitric acid=5: 2: 3) 10 minutes, rinse well.Anodic oxidation in sulphuric acid soln then, as anode, aluminium sheet is a negative electrode with aluminium, in the about 25 ℃ of solution of 150 grams per liter vitriolic with 13 volts of volts DSs, 1.5 peace/decimetres
2Current density oxidation 40 minutes, obtain thickness and be the anode oxide film more than 10 microns.After flowing water and a washed with de-ionized water, carry out the electrolytic coloring processing again.The composition of electrolytic colouring liquid is single nickel salt 45.2 grams per liters, copper sulfate 10 grams per liters, boric acid 40 grams per liters, thionamic acid 10.5 grams per liters.Tank liquor temperature is 25 ℃, with 50 He Zhi alternating-current, 15 volts of voltages, current density 0.5 peace/decimetre
2, electrolytic coloring 1～8 minute promptly obtains the coloring film (seeing Table 1) of red-purple series from the superficial to the deep.About 15 microns of the thickness of film.Naked eyes and 5 times of magnifying glass observation surface tinteds are even, and coloring film sticking power is good, and the crooked 90 ° of oxide films of sample do not break, and do not come off.60 hours after stain films of spray testing through 5%NaCl solution are not found corrosion.
Two. aluminium alloy (6063) plate by after the method degreasing of example one, is adopted following pretreatment procedure, and corrosion is 2 minutes in 100 grams per liter soda lyes, after the flushing, neutralizes at 150 grams per liter sulfuric acid tanks.Rinse the back well and carry out anodic oxidation and electrolytic coloring processing, can obtain same effect by example one method.
Three. the aluminium of use-case one and electrolytic colouring technology, the electrolytic colouring liquid of employing are single nickel salt 45.2 grams per liters, copper sulfate 8 grams per liters, boric acid 40 grams per liters, the aqueous solution of thionamic acid 10 grams per liters can obtain the coloring film (seeing Table 2) of red-purple series from shallow to deep.
Four. the aluminium of use-case one and electrolytic colouring technology, the electrolytic colouring liquid of employing are single nickel salt 35 grams per liters, copper sulfate 10 grams per liters, boric acid 40 grams per liters, the aqueous solution of thionamic acid 5 grams per liters.The performance of gained red-purple series coloring film is similar to example one.
Five. electrolytic colouring liquid is single nickel salt 25 grams per liters, copper sulfate 10 grams per liters, boric acid 35 grams per liters, the aqueous solution of thionamic acid 10 grams per liters adopts the similar technology of example one, and its effect is basic similar to example one.
Six. electrolytic colouring liquid is single nickel salt 40 grams per liters, copper sulfate 10 grams per liters, boric acid 25 grams per liters, the aqueous solution of thionamic acid 10 grams per liters adopts the technology of example one, can obtain the coloring film of satisfied red-purple series.
Table 1:
Numbering electrolytic coloring time (branch) tone
11 than lilac
23 lilac
35 purples
48 intense violet colors
Table 2
Numbering electrolytic coloring time (branch) tone
11 than lilac
23 lilac
35 purples
48 dark dark reddish purple looks
Claims (5)
1, a kind of coloring process of aluminum or aluminum alloy mainly comprises pre-treatment, dc anodizing, and electrolytic coloring in the aqueous metal salt that contains nickel salt and mantoquita is characterized in that:
1. said aqueous metal salt consist of single nickel salt 25～50 grams per liters, copper sulfate 8～15 grams per liters, boric acid 20～40 grams per liters, thionamic acid 1～15 grams per liter,
2. said electrolytic coloring adopts and exchanges, and the current density of ac electrolytic coloring is 0.25～0.65 peace/decimetre
2, 10～17 volts of voltage of alternating current, 15～48 ℃ of the temperature of electrolytic solution, tank liquor pH value 1.7～2.5,1～8 minute electrolytic coloring time.
2, by the coloring process of the said aluminum or aluminum alloy of claim 1, the composition that it is characterized in that said aqueous metal salt is single nickel salt 35～40 grams per liters, copper sulfate 9～11 grams per liters, boric acid 25～35 grams per liters, thionamic acid 3～9 grams per liters.
3, press the coloring process of claim 1 or 2 said aluminum or aluminum alloy, it is characterized in that said pre-treatment comprises operations such as degreasing, washing, mixing acidleach, washing, the volume ratio of the composition of said mixing acid is a phosphoric acid: sulfuric acid: nitric acid=5.2～4.8: 2.2～1.8: 3.2～2.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101215A CN86101215B (en) | 1986-02-28 | 1986-02-28 | Technology for colouration of aluminium and its alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86101215A CN86101215B (en) | 1986-02-28 | 1986-02-28 | Technology for colouration of aluminium and its alloys |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86101215A CN86101215A (en) | 1986-07-16 |
| CN86101215B true CN86101215B (en) | 1988-05-18 |
Family
ID=4801329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86101215A Expired CN86101215B (en) | 1986-02-28 | 1986-02-28 | Technology for colouration of aluminium and its alloys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86101215B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831681B (en) * | 2010-06-04 | 2012-02-01 | 天津大学 | Method for preparing aluminum alloy colored composite film |
| CN101994142B (en) * | 2010-12-09 | 2012-05-30 | 沈阳大学 | Method for preparing titanium dioxide/copper nano composite antibacterial coating on surface of aluminum material |
| FR2990615B1 (en) * | 2012-05-16 | 2015-07-31 | Seb Sa | PROCESS FOR OBTAINING A COOKING CONTAINER HAVING AN ELECTROCHEMICALLY COLORED ANODIZED EXTERIOR |
| CN105063717B (en) * | 2015-08-05 | 2017-09-05 | 山东核电设备制造有限公司 | A kind of high Al-Mn alloy anodic oxidation and electrolysis coloring processes |
| CN105386111B (en) * | 2015-11-05 | 2018-07-13 | 深圳市鑫鸿达清洗技术有限公司 | A kind of method of aluminium alloy electrolytic coloring Chinese red |
| WO2017214778A1 (en) * | 2016-06-12 | 2017-12-21 | 深圳市恒兆智科技有限公司 | Electrolytic colouring stabiliser, metal profile and colouring method thereof |
| CN106591918A (en) * | 2016-12-26 | 2017-04-26 | 安徽宝恒新材料科技有限公司 | Aluminum alloy surface electrolytic coloring method |
| CN107177875B (en) * | 2017-05-10 | 2018-08-24 | 广东伟业铝厂集团有限公司 | A kind of coppery aluminium electrolytic coloring tank liquor |
| CN108374191B (en) * | 2018-04-19 | 2019-11-29 | 江苏瑞吉达建材科技有限公司 | A kind of aluminium alloy building-material processing method |
| CN111155158A (en) * | 2020-01-18 | 2020-05-15 | 厦门市求华体育用品有限公司 | Racket appearance anodizing coloring processing technology |
-
1986
- 1986-02-28 CN CN86101215A patent/CN86101215B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86101215A (en) | 1986-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE25566E (en) | Anodic oxidation of aluminum | |
| EP2350356B1 (en) | Sealing reagent for aluminum alloy | |
| CN86101215B (en) | Technology for colouration of aluminium and its alloys | |
| US5674371A (en) | Process for electrolytically treating aluminum and compositions therefor | |
| US6379523B1 (en) | Method of treating surface of aluminum blank | |
| Sheasby et al. | The electrolytic colouring of anodized aluminium | |
| CN1041446C (en) | Process for colouring anodisation-treated aluminium surface by electrolysis of metall salt | |
| US3878056A (en) | Process for electrolytic coloring of the anodic oxide film on a aluminum or aluminum base alloys | |
| US3917887A (en) | Process for dyeing oxide layers on aluminum and aluminum alloys | |
| GB1564975A (en) | Low temperature sealing of anodized aluminium | |
| JPH08504889A (en) | Method for electrolytically coloring aluminum surface using alternating current | |
| CN1152633A (en) | Eletrolytic colouring technology for golden colour aluminium alloy selenide | |
| AU601047B2 (en) | Electrolytic coloring of anodized aluminium | |
| CN1303957A (en) | Artificial stainless steel colour electro-colour process for aluminium sections | |
| US3704210A (en) | Process for coloring aluminum objects | |
| US3207683A (en) | Process of electrolytic surface treatment of metals | |
| CA2095247C (en) | Electrolyte additive for a colorant bath for coloring aluminum and process for coloring aluminum | |
| CN110565145B (en) | Pure titanium surface super-hydrophobic anodic oxidation coloring film and preparation method and application thereof | |
| US3759801A (en) | Electrolysis bath and process for electrolytically coloring anodized aluminum | |
| CA2029438C (en) | Process for electrolytically treating aluminium and aluminium alloys | |
| Balasubramanian et al. | Influence of addition agents for ac anodizing in sulphuric acid electrolytes | |
| CN112522757A (en) | Preparation method of film-coated colored aluminum alloy | |
| US4100041A (en) | Method of forming a colored and oxide film on aluminum and aluminum alloys | |
| JPH0273993A (en) | Electrolytic coloration bath of surface of anodic oxidized aluminum | |
| KR930003032B1 (en) | Electrolytic coloring method for chromium alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |