CN108866596A - It removes differential arc oxidation film layer medicament, remove micro-arc oxidation films layer method - Google Patents
It removes differential arc oxidation film layer medicament, remove micro-arc oxidation films layer method Download PDFInfo
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- CN108866596A CN108866596A CN201710333096.7A CN201710333096A CN108866596A CN 108866596 A CN108866596 A CN 108866596A CN 201710333096 A CN201710333096 A CN 201710333096A CN 108866596 A CN108866596 A CN 108866596A
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- Prior art keywords
- arc oxidation
- differential arc
- film layer
- oxidation film
- medicament
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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
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/026—Anodisation with spark discharge
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
Abstract
The present invention relates to technical field of micro-arc oxidization, are specifically related to one kind and remove differential arc oxidation film layer medicament, remove micro-arc oxidation films layer method, handle for carrying out differential arc oxidation film layer to defective products workpiece.This removes differential arc oxidation film layer medicament, with densimeter, including：Organic acid, 45g/L-60g/L, solvent are deionized waters.The method for removing differential arc oxidation film layer includes：Firstly, defective products workpiece is immersed in described go in differential arc oxidation film layer medicament；Meanwhile the surface of defective products workpiece is scrubbed with copper brush；Thereafter, surface is disposed by the differential arc oxidation film layer of greyish white blackening, and cleaning, drying can carry out differential arc oxidation again later.Of the invention goes differential arc oxidation film layer medicament that can remove differential arc oxidation film layer, and after getting rid of, associated workpiece can re-start differential arc oxidation, and its performance is unaffected.
Description
【Technical field】
The present invention relates to technical field of micro-arc oxidization, are specifically related to one kind and remove differential arc oxidation film layer medicament, remove differential of the arc oxygen
Change film layer method.
【Background technique】
Differential arc oxidation is a kind of Treatment of Metal Surface mode emerging in recent years.Differential arc oxidization technique can be in magnesium, aluminium alloy
Surface prepares one layer of ceramic coating, so as to greatly improve wear-resistant, the corrosion resistance of magnesium, aluminium alloy.At this stage, exist
Production line micro-arc oxidation process obtains wide utilization.But due to electrolyte prescription is immature, oxidation when electrical parameter set
Setting the factors such as non-standard operation not perfect, in production process causes a certain number of defective products to generate, for enterprise
It is a biggish cost waste.Therefore, it is necessary to try to get rid of the oxidation film on defective products, differential arc oxidation is re-started.
In view of this, removing differential arc oxidation film layer medicament it is really necessary to developing one kind, removing micro-arc oxidation films layer method, to solve
The above problem.
【Summary of the invention】
Therefore, the purpose of the present invention is to provide one kind to remove differential arc oxidation film layer medicament, removes micro-arc oxidation films layer method.This goes
Differential arc oxidation film layer medicament goes micro-arc oxidation films layer method that can clean to defective products workpiece, removes the oxygen on its surface
Change film.
In order to achieve the above object, this removes differential arc oxidation film layer medicament, with densimeter, including：
Organic acid, 45g/L-60g/L；
Solvent is deionized water.
Optionally, the organic acid be oxalic acid, a- amino acid, tartaric acid, lactic acid, benzoic acid, citric acid, acetic acid, oneself
One of diacid is a variety of.
Optionally, the temperature of the deionized water is controlled at 20 DEG C -60 DEG C.
Optionally, the pKa value for going differential arc oxidation film layer medicament acidity controls in 0.5-6.4.
The above-mentioned method for going differential arc oxidation film layer medicament to carry out differential arc oxidation is used the present invention also provides a kind of.It summarizes such as
Under：
Firstly, configuration is above-mentioned to remove differential arc oxidation film layer medicament；Then, micro-arc oxidation films will be removed described in the immersion of defective products workpiece
In layer medicament；After a period of time, the differential arc oxidation layer on surface is disposed, workpiece is cleaned.
Compared to the prior art, of the invention to go differential arc oxidation film layer medicament that remove differential arc oxidation film layer, it gets rid of
Afterwards, associated workpiece can re-start differential arc oxidation.It solves and is generated largely due to differential arc oxidation effect not as good as expection as a result,
The problem of defective products workpiece.
【Detailed description of the invention】
Fig. 1 is schematically shown as differential arc oxidation film layer method flow diagram.
【Specific embodiment】
Firstly, pre-treatment is carried out to workpiece surface, by processes such as polishing, degreasing, pickling, washing, chemical conversion, drying, it
After carry out differential arc oxidation.Then, micro-arc oxidation electrolyte is configured.
Microarc oxidation electrolyte formula is as follows：
Film forming agent, 5g/L-25g/L；
PH value adjustment agent：5g/L-25g/L；
Auxiliary film former：5g/L-20g/L.
Wherein, at 20 DEG C -40 DEG C, the pH value of electrolyte is controlled in 9.0-13.0 for reaction temperature control.
Wherein, film forming agent is or mixtures thereof one of silicate, phosphate, aluminate.
Wherein, pH value adjustment agent is a kind of in sodium hydroxide or potassium hydroxide, and pH value general control is within the scope of 10-13.
Wherein, auxiliary film former is fluorochemical, such as potassium fluoride or sodium fluoride.
As long as it should be noted that the floride-free differential arc oxidation electrolysis that the above components within the scope of respective value, are prepared with this
Liquid can be used as the tank liquor of differential arc oxidation.
Carry out differential arc oxidation when electrical parameter condition be：
Current density, 0.6A/dm2-1.5A/dm2；
Ceiling voltage, 320V-420V；
Duty ratio：10%-30%；
Frequency：500Hz-1000Hz；
Positive and negative frequency ratio：1：1-1：5；
Oxidization time：3-8 minutes.
In the above micro-arc oxidation process, the material that magnesium alloy manufactures experimently piece is AZ91D magnesium alloy.
Then differential arc oxidation film layer medicament is removed according to following proportion and condition preparation.
Organic acid, 45g/L-60g/L；
Solvent is deionized water.
Optionally, the organic acid be oxalic acid, a- amino acid, tartaric acid, lactic acid, benzoic acid, citric acid, acetic acid, oneself
One of diacid is a variety of.
Optionally, the temperature of the deionized water is controlled at 20 DEG C -60 DEG C.
Optionally, the pKa value for going differential arc oxidation film layer medicament acidity controls in 0.5-6.4.
As long as it should be noted that the concentration of the above organic acid removes differential arc oxidation within the scope of respective value, with what this was prepared
Film layer medicament may be incorporated for differential arc oxidation film process.
Differential arc oxidation film layer medicament and the preferred embodiment for removing differential arc oxidation film layer are gone in preparation given below.
Firstly, preparing 5L deionized water, it is heated to 45 DEG C；Then, the organic acid of the above 45g/L-60g/L is measured
2L is poured into the deionized water heated, and solution is stirred evenly, and stands 15-20 minutes；Finally, testing its acidity, guarantee molten
The acidic pKa value of liquid is 0.5.The preparation of differential arc oxidation film layer medicament is gone to finish.
After obtaining differential arc oxidation film layer medicament, the process of differential arc oxidation film layer processing is carried out such as to defective products workpiece
Under：
S101：Defective products workpiece is immersed in described go in differential arc oxidation film layer medicament 3-5 minutes；
S102：At differential arc oxidation film layer in soaking process constantly with copper brush scrub defective products workpiece；
S103：After equal differential arc oxidation film layers become black from canescence, differential arc oxidation film layer is gently brushed off；
S104：The defective products workpiece for getting rid of differential arc oxidation film layer is post-processed.
It the use of copper brush scrub defective products workpiece surface is to accelerate differential arc oxidation film layer in soaking process in S102
Reacting for differential arc oxidation film layer medicament is gone with described.
In S104, post-processing is carried out to defective products workpiece and refers to wash with water and gets rid of described in differential arc oxidation film layer not
Non-defective unit workpiece, then 100 DEG C -150 DEG C at a temperature of toasted.
Then differential arc oxidation, the electrical parameter condition and institute's electricity consumption of differential arc oxidation will be re-started by the workpiece of removal processing
It is identical as described previously to solve formula of liquid.
A series of tests are carried out to the workpiece obtained after differential arc oxidation.Test item and result such as following table.
High temperature in the above test item is stored aging, temperature and humidity circulation, hydrolysis storage, chemical-resistant resistance test while being gone back
Meet the requirement of coating mesh segmentation and scratch resistance performance test.
As seen from the above table, differential arc oxidation is carried out again to the magnesium alloy trial-production piece gone after differential arc oxidation film layer, it is related
Performance equally can satisfy the standard of conventional differential arc oxidation.Differential arc oxidation film layer processing is gone not generate to differential arc oxidation again
Any influence.So of the invention removes differential arc oxidation film layer medicament, micro-arc oxidation films layer method is gone to be capable of handling because of differential arc oxidation
The substandard products that mode is improper and obtains enable to carry out differential arc oxidation again and will not influence the effect of differential arc oxidation again.From
And new solution is provided for the reverse process of differential arc oxidation.
It should be pointed out that the present invention is not limited to the above embodiments, any person skilled in the art is based on this
Inventive technique scheme both falls within protection of the invention to any simple modification, equivalent change and modification made by above-described embodiment
In range.
Claims (6)
1. one kind removes differential arc oxidation film layer medicament, which is characterized in that with densimeter comprising：
Organic acid, 45g/L-60g/L；
Solvent is deionized water.
2. according to claim 1 remove differential arc oxidation film layer medicament, which is characterized in that the organic acid is oxalic acid, a- ammonia
One of base acid, tartaric acid, lactic acid, benzoic acid, citric acid, acetic acid, adipic acid are a variety of.
3. according to claim 1 remove differential arc oxidation film layer medicament, which is characterized in that the temperature of the deionized water controls
At 20 DEG C -60 DEG C.
4. according to claim 1 remove differential arc oxidation film layer medicament, which is characterized in that described to remove differential arc oxidation film layer medicament
Acid pKa value controls in 0.5-6.4.
5. a kind of use goes differential arc oxidation film layer medicament to carry out differential arc oxidation as described in any one of Claims 1-4
The method of film layer, which is characterized in that including steps are as follows：
(1) defective products workpiece is immersed in described go in differential arc oxidation film layer medicament 3-5 minutes；
(2) it is constantly scrubbed with copper brush in soaking process at the differential arc oxidation film layer of the defective products workpiece；
(3) etc. after differential arc oxidation film layers become black from canescence, differential arc oxidation film layer is gently brushed off；
(4) the defective products workpiece for getting rid of differential arc oxidation film layer is post-processed.
6. the method according to claim 5 for removing differential arc oxidation film layer, which is characterized in that the rear place in the step (4)
Reason is to wash with water the defective products workpiece for getting rid of differential arc oxidation film layer, then 100 DEG C -150 DEG C at a temperature of carry out
Baking.
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| CN201710333096.7A CN108866596A (en) | 2017-05-12 | 2017-05-12 | It removes differential arc oxidation film layer medicament, remove micro-arc oxidation films layer method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501072A (en) * | 2020-05-09 | 2020-08-07 | 广东哈福科技有限公司 | Copper electroplating solution passivating agent and copper electroplating solution |
| CN111560639A (en) * | 2019-02-13 | 2020-08-21 | 日本爱发科泰克能株式会社 | Method for regenerating oxide film of aluminum member |
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Effective date of registration: 20190830 Address after: 243000 No. 1430 Huxi Southwest Road, Ma'anshan Economic and Technological Development Zone, Anhui Province Applicant after: Huafu Precision Technology (Ma'anshan) Co., Ltd. Address before: Suzhou City, Jiangsu province 215300 Eagle Kunshan Road Development Zone No. 66 Applicant before: Kunshan Han Ding Feinmetall GmbH |
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Application publication date: 20181123 |