CN109778281A - Two-part voltage oxide improves the corrosion proof method of aluminium alloy - Google Patents
Two-part voltage oxide improves the corrosion proof method of aluminium alloy Download PDFInfo
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- CN109778281A CN109778281A CN201910238509.2A CN201910238509A CN109778281A CN 109778281 A CN109778281 A CN 109778281A CN 201910238509 A CN201910238509 A CN 201910238509A CN 109778281 A CN109778281 A CN 109778281A
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Abstract
The present invention announces two-part voltage oxide and improves the corrosion proof method of aluminium alloy, including the following steps: S1: first wash, the aluminum alloy part after pre-treatment is got well carry out washing removal surface impurity；S2: the oxidation of two-part ultor carries out anodic oxidation plated film to aluminum alloy part in tank liquor by successive two sections of different voltage.S3: second wash, to the aluminum alloy part washing removal Liquid Residue and surface impurity after the step S2.It is electrolysed in acid solution by the different voltage in both ends, therefore the thickness by thickening oxidation film layer is not needed to improve corrosion resistance, film layer resistance is small, causes oxidation film layer compactness high by the big electrolysis of electric current, the small quality to improve the corrosion resistance and surface of aluminum alloy part of hole；Process flow is simple and convenient to operate, the good save the cost again of coating effects.
Description
[technical field]
The present invention relates to metalwork technical field of surface more particularly to two-part voltage oxide raising aluminium alloy are anti-corrosion
The method of property.
[background technique]
The anodic oxidation of aluminium alloy is a kind of process of electrolytic hydrogenation, and in this process, the surface of aluminium alloy usually converts
For layer oxide film, this layer of oxidation film has protectiveness, dicoration and some other functional characteristics；By metal or alloy
As anode, its surface is set to form sull using the method for electrolysis.Metal oxide changes surface state and performance,
To improve corrosion resistance and wearability and hardness, protection metal surface etc..Generally part is placed in acid solution again galvanization work
With, be electrolysed, thus metal surface generate aluminum oxide film, with a thickness of 5-30 microns, horniness anode oxide film is up to 25-
150 microns；Existing electrolytic method generally uses the voltage of unistage type to be electrolysed, then by control voltage size and when
Between come increase control film layer thickness so that improve corrosion resistance, since the electric conductivity of too thick film layer is very poor, it is therefore desirable to have one
Kind technology can not have to the thickness by increasing oxidation film layer so as to improve the corrosion proof process of aluminum alloy surface.
[summary of the invention]
In order to solve existing issue present in background technique, the invention discloses two-part voltage oxides to improve aluminium alloy
Corrosion proof method carries out electrolytic oxidation by two-part voltage and realizes that corrosion resistance improves, process is simple, operation is convenient,
Coating effects are good, at low cost.
The following technical solution is employed by the present invention:
Two-part voltage oxide improves the corrosion proof method of aluminium alloy, including the following steps:
S1: first wash, the aluminum alloy part after pre-treatment is got well carry out washing removal surface impurity；
S2: the oxidation of two-part ultor carries out aluminum alloy part in tank liquor by successive two sections of different voltage
Anodic oxidation plated film.
S3: second wash, to the aluminum alloy part washing removal Liquid Residue and surface impurity after the step S2.
Tank liquor is sulfuric acid in the step S2.
The sulfuric acid concentration is 180-200g/L, and temperature is 18-22 DEG C.
Both end voltage includes first segment voltage and second segment voltage in the step S2, and the first segment voltage is 12-13V
Between, the second segment voltage is between 16-17V.
12-15min is handled by the first segment voltage, the second segment voltage handles 18-20min.
Beneficial effects of the present invention are as follows:
The present invention is electrolysed in acid solution by the different voltage in both ends, therefore is not needed by thickening oxidation film layer
Thickness improves corrosion resistance, and film layer resistance is small, causes oxidation film layer compactness high by the big electrolysis of electric current, hole is small to mention
The high corrosion resistance of aluminum alloy part and the quality on surface；Process flow is simple and convenient to operate, coating effects it is good again save at
This.
[Detailed description of the invention]
Fig. 1 is structural schematic diagram of the invention.
[specific embodiment]
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not exclusively for the present invention.
The present invention is described in further detail in embodiment with reference to the accompanying drawing:
Two-part voltage oxide improves the corrosion proof method of aluminium alloy, is carried out by following steps:
S1: first wash, the aluminum alloy part after pre-treatment is got well carry out washing removal surface impurity, aluminum alloy part
By pre-treatment, such as the removal of thin oxide film layer, general aluminum alloy part can all generate one in air after exposure is placed
The very thin oxidation film layer of layer, the film layer is very thin, and corrosion resistance is poor, but influences whether the technique of plating oxidation film, therefore, generally
Technique early period for taking off film can be all carried out before plated film, piece surface has impurity attachment after preceding processing, by the
Primary washing is rinsed, and removes impurity, it is clean to reach surface.
S2: the oxidation of two-part ultor carries out aluminum alloy part in tank liquor by successive two sections of different voltage
Anodic oxidation plated film, tank liquor do not have special explanation and require general selection sulfuric acid, and tank liquor of the present invention exactly selects sulfuric acid, sulfuric acid
Concentration is 180-200g/L, temperature control is carried out at 18-22 DEG C, sulfuric acid has the advantages that a variety of compared with oxalic acid, chromic acid:
It is solution-stabilized, allow impurity level it is big, power consumption is few, it is easy to operate, at low cost, require temperature low, according to groove body
Sulfuric acid amount needed for volume and sulfuric acid concentration calculate, adds 3/4 volume pure water in slot, and plays wind stirring；Sulfuric acid is slowly added into slot
It is interior, and pure water is supplemented to prescribed volume (being sure not to add water in sulfuric acid)；Electrolysis behaviour can be carried out when being cooled to 18-22 DEG C
Make；The present invention carries out electrolytic oxidation by both end voltage difference, and different parts selects different voltage according to area, and electric current is close
Degree is bigger, and film is harder, and wearability is good, but current density is excessively high, film layer welding effect can be made to increase, electricity because of joule heat affecting
Current density is excessively high, and film layer oxidization time is too long, and film is loose, and hardness reduces；The present embodiment by the different part of three kinds of areas into
Row oxidization electrolysis finally obtains most suitable voltage value and time value, the part for being 0.65dm2 for area, and first segment voltage is
12.5V, electric current about 0.6A/PCS, the time: 12min, second segment voltage are 16V, electric current: about 0.9A/PCS, time: 18min；It is right
In area be 2.52dm2 product, first segment voltage: 13V, electric current: about 1.7A/PCS, the time: 15min, second segment voltage:
17V, electric current: about 2.8A/PCS time: 20min；For area: the product of 4.8dm2, first segment voltage: 13V, electric current: about
3.2A/PCS, time: 15min, second segment voltage: 17V, electric current: about 5.3A/PCS, time: 20min；In the voltage and current
Under effect, the oxidation film compactness of generation is high, and membranous layer corrosion resistance is high, and wearability is general, when current density is too low, oxidization time
Long, film hardness is low, and production efficiency is low, and current density is excessively high, and big calorimetric is generated in oxidation process, accelerates oxidation film dissolution,
Film hardness can be made relatively low, and increase a possibility that part is burned out, thus in anode oxidation process must using stirring or
Cooling device makes electrolyte temperature be maintained at a certain range, and control is most suitable at 18-22 DEG C, guarantees that oxidation effectiveness is best.
S3: second wash, to the aluminum alloy part washing removal Liquid Residue and surface impurity after the step S2.
After anodization step, piece surface can adhere to impurity etc, by it is secondary washing by impurity wash away completely, into
The following step process of row.
The present invention has the advantages that
The present invention is electrolysed in acid solution by the different voltage in both ends, therefore is not needed by thickening oxidation film layer
Thickness improves corrosion resistance, and film layer resistance is small, causes oxidation film layer compactness high by the big electrolysis of electric current, hole is small to mention
The high corrosion resistance of aluminum alloy part and the quality on surface；Process flow is simple and convenient to operate, coating effects it is good again save at
This.
As known by the technical knowledge, the present invention can pass through the embodiment party of other substantive goods essential features without departing from its spirit
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (5)
1. two-part voltage oxide improves the corrosion proof method of aluminium alloy, which is characterized in that including the following steps:
S1: first wash, the aluminum alloy part after pre-treatment is got well carry out washing removal surface impurity；
S2: the oxidation of two-part ultor carries out anode to aluminum alloy part in tank liquor by successive two sections of different voltage
Aoxidize plated film.
S3: second wash, to the aluminum alloy part washing removal Liquid Residue and surface impurity after the step S2.
2. two-part voltage oxide as described in claim 1 improves the corrosion proof method of aluminium alloy, it is characterised in that: the step
Tank liquor is sulfuric acid in rapid S2.
3. two-part voltage oxide as claimed in claim 2 improves the corrosion proof method of aluminium alloy, it is characterised in that: the sulphur
Acid concentration is 180-200g/L, and temperature is 18-22 DEG C.
4. two-part voltage oxide as described in claim 1 improves the corrosion proof method of aluminium alloy, it is characterised in that: the step
Both end voltage includes first segment voltage and second segment voltage in rapid S2, and the first segment voltage is between 12-13V, and described second
Section voltage is between 16-17V.
5. two-part voltage oxide as claimed in claim 4 improves the corrosion proof method of aluminium alloy, it is characterised in that: pass through institute
First segment voltage processing 12-15min is stated, the second segment voltage handles 18-20min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453263A (en) * | 2019-08-27 | 2019-11-15 | 中铝瑞闽股份有限公司 | A kind of aluminium alloy mirror surface anode oxidation method |
| CN111235618A (en) * | 2020-01-16 | 2020-06-05 | 长沙鼎日成金属表面处理有限公司 | Anodic oxidation electrophoresis process for high-silicon high-copper aluminum alloy parts |
| CN113046810A (en) * | 2021-03-17 | 2021-06-29 | 无锡鹰贝电化学工程有限公司 | Aluminum alloy hard anodizing pressurization method and aluminum alloy hard anodizing process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129016A (en) * | 1980-12-27 | 1984-05-10 | Nagano Prefecture | Anodic oxidation on Al or Al alloys |
| EP0792951A1 (en) * | 1994-11-16 | 1997-09-03 | Kabushiki Kaisha Kobe Seiko Sho | Vacuum chamber made of aluminum or its alloy, and surface treatment and material for the vacuum chamber |
| CN109208055A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | A kind of aluminium alloy and preparation method thereof and handset shell |
| CN109415836A (en) * | 2016-04-18 | 2019-03-01 | 福克航空结构公司 | The anode oxidation method of aluminium or its alloy product |
-
2019
- 2019-03-27 CN CN201910238509.2A patent/CN109778281A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2129016A (en) * | 1980-12-27 | 1984-05-10 | Nagano Prefecture | Anodic oxidation on Al or Al alloys |
| EP0792951A1 (en) * | 1994-11-16 | 1997-09-03 | Kabushiki Kaisha Kobe Seiko Sho | Vacuum chamber made of aluminum or its alloy, and surface treatment and material for the vacuum chamber |
| CN109415836A (en) * | 2016-04-18 | 2019-03-01 | 福克航空结构公司 | The anode oxidation method of aluminium or its alloy product |
| CN109208055A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | A kind of aluminium alloy and preparation method thereof and handset shell |
Non-Patent Citations (3)
| Title |
|---|
| 任广军: "《电镀工艺学》", 31 December 2016, 中国建材工业出版社 * |
| 姬振江等: ""LY12CZ 铝合金的代铬酸快速阳极氧化技术"", 《北京航空航天大学学报》 * |
| 廖健等: "《铝合金挤压材生产与应用》", 31 March 2018, 冶金工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453263A (en) * | 2019-08-27 | 2019-11-15 | 中铝瑞闽股份有限公司 | A kind of aluminium alloy mirror surface anode oxidation method |
| CN111235618A (en) * | 2020-01-16 | 2020-06-05 | 长沙鼎日成金属表面处理有限公司 | Anodic oxidation electrophoresis process for high-silicon high-copper aluminum alloy parts |
| CN111235618B (en) * | 2020-01-16 | 2021-10-29 | 长沙鼎日成金属表面处理有限公司 | Anodic oxidation electrophoresis process for high-silicon high-copper aluminum alloy parts |
| CN113046810A (en) * | 2021-03-17 | 2021-06-29 | 无锡鹰贝电化学工程有限公司 | Aluminum alloy hard anodizing pressurization method and aluminum alloy hard anodizing process |
| CN113046810B (en) * | 2021-03-17 | 2022-11-29 | 无锡鹰贝电化学工程有限公司 | Aluminum alloy hard anodizing pressurization method and aluminum alloy hard anodizing process |
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Application publication date: 20190521 |