CN108265295A - Decoating liquid - Google Patents
Decoating liquid Download PDFInfo
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- CN108265295A CN108265295A CN201611258335.9A CN201611258335A CN108265295A CN 108265295 A CN108265295 A CN 108265295A CN 201611258335 A CN201611258335 A CN 201611258335A CN 108265295 A CN108265295 A CN 108265295A
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- Prior art keywords
- decoating liquid
- water
- decoating
- liquid
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- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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Abstract
A kind of decoating liquid, including the first decoating liquid and the second decoating liquid, which includes surfactant, the first etchant, cosolvent and water, which includes the second etchant, oxidant and water.First decoating liquid of the decoating liquid can quickly and effectively remove the hydrophobic oleophobic plated film of surface of shell, and the second decoating liquid can quickly and effectively remove the anode oxide film of surface of shell.So, housing occur plated film it is bad and when needing rework, or, the anode oxide film and hydrophobic oleophobic plated film of surface of shell be damaged or aging and when needing plating again, the decoating liquid can be used quickly to remove the hydrophobic oleophobic plated film and anode oxide film of surface of shell, heavy industry or again plating can be carried out, can so effectively reduce cost.
Description
Technical field
The present invention relates to a kind of decoating liquid, more particularly to a kind of surface of shell hydrophobic oleophobic layer and anode oxide film of removing
Decoating liquid.
Background technology
The devices such as 3C electronic products, high-end sports products, precision instrument generally have Al-alloy casing.As people are to 3C
The appearance requirement of electronic product, high-end sports products, precision instrument etc. is higher and higher, industry would generally the surface of aluminium alloy according to
Secondary setting anode oxide film and hydrophobic oleophobic plated film.Wherein, anode oxide film is for providing color etc., to enrich Al-alloy casing
Appearance, and hydrophobic oleophobic plated film has stronger anti-fingerprint, the anti-performances such as dirty.
However, in the actual production process, it is bad that Al-alloy casing often will appear plated film, and the phenomenon that need rework.
In addition, Al-alloy casing is after long-term use, the anode oxide film and hydrophobic oleophobic plated film on surface can be damaged or always
Change, need to remove plated film, again plating.But hydrophobic oleophobic plated film generally has the property such as very strong acid and alkali-resistance, organic solvent-resistant
It can so that the hydrophobic oleophobic plated film and anode oxide film of aluminum alloy surface are difficult to remove.
Invention content
In view of this, it is necessary to a kind of decoating liquid that can remove hydrophobic oleophobic plated film and anode oxide film is provided, with solution
Certainly problem above.
A kind of decoating liquid, including the first decoating liquid and the second decoating liquid, which includes surfactant, the
One etchant, cosolvent and water, second decoating liquid include the second etchant, oxidant and water.
A kind of decoating liquid, including surfactant, the first etchant, cosolvent, the second etchant, oxidant and water.
The decoating liquid includes the first decoating liquid and the second decoating liquid, which can quickly and effectively remove shell
The hydrophobic oleophobic plated film in body surface face, second decoating liquid can quickly and effectively remove the anode oxide film of surface of shell.In this way,
Housing occur plated film it is bad and when needing rework, alternatively, the anode oxide film of surface of shell and hydrophobic oleophobic plated film are damaged
Or aging and when needing plating again, the decoating liquid can be used quickly to remove the hydrophobic oleophobic plated film and sun of surface of shell
Pole oxidation film, you can carry out heavy industry or again plating, can so effectively reduce cost.
Specific embodiment
Better embodiment of the present invention provides a kind of decoating liquid, for removing the hydrophobic oleophobic plated film on Al-alloy casing surface
And anode oxide film.The decoating liquid includes the first decoating liquid and the second decoating liquid.First decoating liquid is used to remove aluminium alloy table
The hydrophobic oleophobic plated film in face, second decoating liquid are used to remove the anode oxide film of aluminum alloy surface.
The Al-alloy casing includes alloy matrix aluminum, and the hydrophobic oleophobic plated film and anode oxide film stack gradually to be formed
On the surface of the alloy matrix aluminum.The hydrophobic oleophobic plated film includes silica bottom and fluorochemical polyether analog derivative surface layer.
The material of the anode oxide film is mainly aluminium oxide.
First decoating liquid includes surfactant, the first etchant, cosolvent and water.
In first decoating liquid, the ranging from the 0.1%~5% of the mass percentage of surfactant, first etching
Ranging from the 0.1%~5% of the mass percentage of agent, ranging from the 3%~10% of the mass percentage of the cosolvent,
Ranging from the 85%~95% of the mass percentage of water.
The surfactant is water soluble surfactant active.The water soluble surfactant active includes but not limited to fluorine surface
One or both of activating agent (Du Pont, FSN-100), fluorocarbon surfactant (3M, FC-4430).The surfactant can
To reduce the surface tension of hydrophobic oleophobic plated film, the surface of hydrophobic oleophobic plated film is soaked, and it is thin that the first etchant is assisted to infiltrate into
The inside of water oleophobic plated film.
First etchant is fluorine-containing salts.The fluorine-containing salts include but not limited in ammonium acid fluoride, sodium fluoride, potassium fluoride
It is one or more of.First etchant can penetrate the fluorochemical polyether analog derivative surface layer of hydrophobic oleophobic plated film, and selective molten
Solve the silica bottom of hydrophobic oleophobic plated film.
The cosolvent is water-miscible organic solvent.The water-miscible organic solvent includes but not limited to methanol, ethyl alcohol, isopropyl
One or more of alcohol.The cosolvent can allow the surfactant preferably soluble in water, and allow from the surface of housing
The fluorochemical polyether analog derivative stripped is dissolved in the first decoating liquid.
Second decoating liquid includes the second etchant, oxidant and water.
In second decoating liquid, ranging from the 0.1%~5% of the mass percentage of the second etchant.Oxidant
Ranging from the 0.1%~5% of mass percentage.Ranging from the 90%~96% of the mass percentage of water.
Second etching solution is soluble alkali hydroxide.The soluble alkali hydroxide includes but not limited to hydrogen
One or both of sodium oxide molybdena, potassium hydroxide.Second etchant can dissolve anode oxide film.
The oxidant is oxidisability inorganic salts.The oxidisability inorganic salts include but not limited to sodium nitrate, potassium nitrate
One or both of.The oxidant can enable aluminum alloy to the surface passivation of matrix in etching process, so as to aluminium alloy base
The aluminium alloy in internal portion plays a protective role.
The first decoating liquid and the second decoating liquid of the decoating liquid can successively be used alone, to remove aluminium by two-step method
The hydrophobic oleophobic plated film and anode oxide film on alloy shell surface.The first decoating liquid and the second decoating liquid of the decoating liquid may be used also
To use after directly mixing, to pass through the hydrophobic oleophobic plated film and anode oxide film that one-step method removes Al-alloy casing surface.
A kind of hydrophobic oleophobic plated film and anodic oxygen for removing Al-alloy casing surface by two-step method using above-mentioned decoating liquid
Change the strip method of film, include the following steps：
Step S1：An Al-alloy casing is provided, which includes alloy matrix aluminum and be sequentially formed at aluminium conjunction
The anode oxide film of golden matrix surface and hydrophobic oleophobic plated film.The material of the anode oxide film is mainly aluminium oxide.This is hydrophobic thin
Oily plated film includes silica bottom and fluorochemical polyether analog derivative surface layer.
Step S2：There is the surface of anode oxide film and hydrophobic oleophobic plated film immersion first to move back above-mentioned Al-alloy casing
In plating solution, to remove hydrophobic oleophobic plated film.
After removing surface hydrophobicity oleophobic plated film, the surface of Al-alloy casing becomes total hydrophilic.
Step S3：The surface with anode oxide film of Al-alloy casing after above-mentioned removal hydrophobic oleophobic plated film is immersed
In second decoating liquid, to remove anode oxide film, the alloy matrix aluminum of surface exposure is obtained.
After anode oxide film is removed, the aluminium alloy of aluminium alloy matrix surface can be straight with the alkaline solution in the second decoating liquid
Contact, therefore, the surface of alloy matrix aluminum can be corroded, and the impurity such as remained on surface silicon in alloy matrix aluminum, copper are formed
Black film.
Step S4：The alloy matrix aluminum is immersed in salpeter solution and carries out desmut, to remove aluminium alloy matrix surface
The impurity such as silicon, copper.
It should be understood that the Al alloy shell to removing hydrophobic oleophobic plated film is further included between the step S2 and step S3
The step of body surface face is washed.
It should be understood that the alloy matrix aluminum to removing anode oxide film is further included between the step S3 and step S4
The step of surface is washed.
The aluminium alloy matrix surface after desmut is washed and dried it should be understood that being further included after the step S4
Dry step.
The alloy matrix aluminum is after removal hydrophobic oleophobic plated film and anode oxide film, you can heavy industry is carried out, to be closed in aluminium
The surface of auri body forms anode oxide film, then forms hydrophobic oleophobic plated film on the surface of anode oxide film, obtains new aluminium and closes
Golden shell body.
A kind of hydrophobic oleophobic plated film and anodic oxygen for removing Al-alloy casing surface by one-step method using above-mentioned decoating liquid
Change the strip method of film, include the following steps：
Step S1：An Al-alloy casing is provided, which includes alloy matrix aluminum and be sequentially formed at aluminium conjunction
The anode oxide film of golden matrix surface and hydrophobic oleophobic plated film.The material of the anode oxide film is mainly aluminium oxide.This is hydrophobic thin
Oily plated film includes silica bottom and fluorochemical polyether analog derivative surface layer.
Step S2：The decoating liquid is provided, the first liquid of decoating liquid is mixed with the second decoating liquid.
Step S3：After the surface with anode oxide film and hydrophobic oleophobic plated film of above-mentioned Al-alloy casing is immersed mixing
Decoating liquid in, to remove the anode oxide film of aluminium alloy matrix surface and hydrophobic oleophobic plated film.
After anode oxide film is removed, the aluminium alloy of aluminium alloy matrix surface can be straight with the alkaline solution in the second decoating liquid
Contact, therefore, the surface of alloy matrix aluminum can be corroded, and the impurity such as remained on surface silicon in alloy matrix aluminum, copper are formed
Black film.
Step S4：Alloy matrix aluminum after the removal hydrophobic oleophobic plated film and anode oxide film is immersed in salpeter solution
Desmut is carried out, to remove the impurity such as the silicon of aluminium alloy matrix surface, copper.
It should be understood that it is further included between the step S3 and step S4 to removal hydrophobic oleophobic plated film and anodic oxidation
The step of aluminium alloy matrix surface of film is washed.
The aluminium alloy matrix surface after desmut is washed and dried it should be understood that being further included after the step S4
Dry step.
The alloy matrix aluminum is after removal hydrophobic oleophobic plated film and anode oxide film, you can heavy industry is carried out, to be closed in aluminium
The surface of golden shell body forms anode oxide film, forms hydrophobic oleophobic plated film on the surface of anode oxide film, obtains new aluminium alloy
Housing.
Further the decoating liquid and strip method of the present invention are illustrated below by embodiment.
Embodiment 1
In the present embodiment, the first decoating liquid of decoating liquid is made of FNS-100, ammonium acid fluoride, ethyl alcohol and water, the second strip
Liquid is made of sodium hydroxide, sodium nitrate and water.
In first decoating liquid, the mass percentage of FNS-100 is 0.5%, and the mass percentage of ammonium acid fluoride is
1%, the mass percentage of ethyl alcohol is 10%, and the mass percentage of water is 88.5%.In second decoating liquid, sodium hydroxide
Mass percentage for 1%, the mass percentage of sodium nitrate is 3%, and the mass percentage of water is 96%.
An Al-alloy casing is provided, which includes alloy matrix aluminum and be sequentially formed at the alloy matrix aluminum table
The anode oxide film in face and hydrophobic oleophobic plated film, the hydrophobic oleophobic plated film include silica bottom and fluorochemical polyether analog derivative
Surface layer, the main material of the anode oxide film is aluminium oxide；At room temperature, which is immersed in the first decoating liquid
5min strips hydrophobic oleophobic plated film, and after immersion, aluminum alloy surface becomes total hydrophilic；After washing, immerse that temperature is 55 DEG C the
60s in two decoating liquids strips anode oxide film；After washing, immerse at room temperature in the dilute nitric acid solution that mass concentration is 3%
2min, desmut；After washing can heavy industry, plated with forming new anode oxide film and hydrophobic oleophobic on the surface of alloy matrix aluminum
Film.
Embodiment 2
In the present embodiment, the first decoating liquid of decoating liquid is made of FC-4430, ammonium acid fluoride, ethyl alcohol and water, the second strip
Liquid is made of sodium hydroxide, sodium nitrate and water.
In first decoating liquid, the mass percentage of FC-4430 is 1%, and the mass percentage of ammonium acid fluoride is
2%, the mass percentage of ethyl alcohol is 10%, and the mass percentage of water is 87%.In second decoating liquid, sodium hydroxide
Mass percentage is 2%, and the mass percentage of sodium nitrate is 4%, and the mass percentage of water is 94%.
An Al-alloy casing is provided, which includes alloy matrix aluminum and be sequentially formed at the alloy matrix aluminum table
The anode oxide film in face and hydrophobic oleophobic plated film, the hydrophobic oleophobic plated film include silica bottom and fluorochemical polyether analog derivative
Surface layer, the main material of the anode oxide film is aluminium oxide；At room temperature, which is immersed in the first decoating liquid
3min strips hydrophobic oleophobic plated film, and after immersion, aluminum alloy surface becomes total hydrophilic；After washing, immerse that temperature is 55 DEG C the
60s in two decoating liquids strips anode oxide film；After washing, immerse at room temperature in the dilute nitric acid solution that mass concentration is 3%
2min, desmut；After washing can heavy industry, plated with forming new anode oxide film and hydrophobic oleophobic on the surface of alloy matrix aluminum
Film.
Embodiment 3
In the present embodiment, the first decoating liquid of decoating liquid is made of FC-4430, sodium fluoride, isopropanol and water, the second strip
Liquid is made of sodium hydroxide, sodium nitrate and water.
In first decoating liquid, the mass percentage of FC-4430 is 1%, and the mass percentage of sodium fluoride is 2%,
The mass percentage of isopropanol is 5%, and the mass percentage of water is 92%.In second decoating liquid, the matter of sodium hydroxide
It is 2% to measure percentage composition, and the mass percentage of sodium nitrate is 4%, and the mass percentage of water is 94%.
An Al-alloy casing is provided, which includes alloy matrix aluminum and be sequentially formed at the alloy matrix aluminum table
The anode oxide film in face and hydrophobic oleophobic plated film, the hydrophobic oleophobic plated film include silica bottom and fluorochemical polyether analog derivative
Surface layer, the main material of the anode oxide film is aluminium oxide；At room temperature, which is immersed in the first decoating liquid
3min strips hydrophobic oleophobic plated film, and after immersion, aluminum alloy surface becomes total hydrophilic；After washing, immerse that temperature is 55 DEG C the
50s in two decoating liquids strips anode oxide film；After washing, immerse at room temperature in the dilute nitric acid solution that mass concentration is 3%
2min, desmut；After washing can heavy industry, plated with forming new anode oxide film and hydrophobic oleophobic on the surface of alloy matrix aluminum
Film.
Embodiment 4
In the present embodiment, the first decoating liquid of decoating liquid is made of FC-4430, sodium fluoride, isopropanol and water.Second strip
Liquid is made of sodium hydroxide, sodium nitrate and water.In use, first, first decoating liquid and the second decoating liquid are mixed to get strip
Liquid.
In the decoating liquid, the mass percentage of FC-4430 is 1%, and the mass percentage of sodium fluoride is 2%, isopropyl
The mass percentage of alcohol is 5%, and the mass percentage of sodium hydroxide is 2%, and the mass percentage of sodium nitrate is 4%,
The mass percentage of water is 86%.
An Al-alloy casing is provided, which includes alloy matrix aluminum and be sequentially formed at the alloy matrix aluminum table
The anode oxide film in face and hydrophobic oleophobic plated film, the hydrophobic oleophobic plated film include silica bottom and fluorochemical polyether analog derivative
Surface layer, the main material of the anode oxide film is aluminium oxide；The Al-alloy casing is immersed in the decoating liquid that temperature is 55 DEG C
3min strips hydrophobic oleophobic plated film and anode oxide film；After washing, the dilute nitric acid solution that mass concentration is 3% is immersed at room temperature
Middle 2min, desmut；After washing can heavy industry, to form new anode oxide film and hydrophobic oleophobic on the surface of alloy matrix aluminum
Plated film.
It should be understood that the decoating liquid of the present invention is not limited to the hydrophobic oleophobic plated film and anode of stripping aluminium alloy matrix surface
Oxidation film, for the matrix of other materials (such as stainless steel), as long as the hydrophobic oleophobic plated film of matrix surface includes silica
Bottom and fluorochemical polyether analog derivative surface layer, the main material of anode oxide film is aluminium oxide, you can uses the strip of the present invention
The hydrophobic oleophobic plated film and anode oxide film of gold removal matrix surface.
Can be with understanding, decoating liquid of the invention can be also used for removing other arbitrarily intolerant to the oxidation of the metal of highly basic
Film.
It should be understood that first decoating liquid can also be used alone, to remove the hydrophobic oleophobic plated film of matrix surface.
The decoating liquid of the present invention includes the first decoating liquid and the second decoating liquid, which can quickly and effectively go
Except the hydrophobic oleophobic plated film of surface of shell, which can quickly and effectively remove the anode oxide film of surface of shell.
In this way, housing occur plated film it is bad and when needing rework, alternatively, the anode oxide film of surface of shell and hydrophobic oleophobic plated film quilt
Damage or aging and when needing plating again, the decoating liquid can be used quickly to remove the hydrophobic oleophobic plated film of surface of shell
And anode oxide film, you can carry out heavy industry or again plating, can so effectively reduce cost.
In addition, it for those of ordinary skill in the art, can be made with technique according to the invention design other each
It is kind corresponding to change and deformation, and all these changes and deformation should all belong to the protection domain of the claims in the present invention.
Claims (14)
1. a kind of decoating liquid, it is characterised in that：The decoating liquid includes the first decoating liquid and the second decoating liquid, the first decoating liquid packet
Surfactant, the first etchant, cosolvent and water are included, which includes the second etchant, oxidant and water.
2. decoating liquid as described in claim 1, it is characterised in that：In first decoating liquid, the quality hundred of surfactant
Divide ranging from the 0.1%~5%, ranging from the 0.1%~5% of the mass percentage of the first etchant of content, the hydrotropy
Ranging from the 3%~10% of the mass percentage of agent, ranging from the 85%~95% of the mass percentage of water.
3. decoating liquid as described in claim 1, it is characterised in that：The surfactant includes fluorinated surfactant, fluorine carbon
One or both of surfactant.
4. decoating liquid as described in claim 1, it is characterised in that：First etchant is fluorine-containing salts, which includes
One or more of ammonium acid fluoride, sodium fluoride, potassium fluoride.
5. decoating liquid as described in claim 1, it is characterised in that：The cosolvent be water-miscible organic solvent, the water solubility
Organic solvent includes one or more of methanol, ethyl alcohol, isopropanol.
6. decoating liquid as described in claim 1, it is characterised in that：In second decoating liquid, the quality hundred of the second etchant
Divide ranging from the 0.1%~5%, ranging from the 0.1%~5% of the mass percentage of oxidant of content, the quality percentage of water
Ranging from the 90%~96% of content.
7. decoating liquid as described in claim 1, it is characterised in that：Second etching solution is soluble alkali hydroxide,
The soluble alkali hydroxide includes one or both of sodium hydroxide, potassium hydroxide.
8. decoating liquid as described in claim 1, it is characterised in that：The oxidant be oxidisability inorganic salts, the oxidisability
Inorganic salts include one or both of sodium nitrate, potassium nitrate.
9. a kind of decoating liquid, it is characterised in that：The decoating liquid includes surfactant, the first etchant, cosolvent, the second etching
Agent, oxidant and water.
10. decoating liquid as claimed in claim 9, it is characterised in that：The surfactant includes fluorinated surfactant, fluorine carbon
One or both of surfactant.
11. decoating liquid as claimed in claim 9, it is characterised in that：First etchant is fluorine-containing salts, which includes
One or more of ammonium acid fluoride, sodium fluoride, potassium fluoride.
12. decoating liquid as claimed in claim 9, it is characterised in that：The cosolvent be water-miscible organic solvent, the water solubility
Organic solvent includes one or more of methanol, ethyl alcohol, isopropanol.
13. decoating liquid as claimed in claim 9, it is characterised in that：Second etching solution is soluble alkali hydroxide,
The soluble alkali hydroxide includes one or both of sodium hydroxide, potassium hydroxide.
14. decoating liquid as claimed in claim 9, it is characterised in that：The oxidant be oxidisability inorganic salts, the oxidisability
Inorganic salts include one or both of sodium nitrate, potassium nitrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258335.9A CN108265295A (en) | 2016-12-30 | 2016-12-30 | Decoating liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611258335.9A CN108265295A (en) | 2016-12-30 | 2016-12-30 | Decoating liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108265295A true CN108265295A (en) | 2018-07-10 |
Family
ID=62754720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611258335.9A Pending CN108265295A (en) | 2016-12-30 | 2016-12-30 | Decoating liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109487088A (en) * | 2019-01-14 | 2019-03-19 | 东北大学 | A kind of waste and old plating piece gradient recycling metal process of copper-based nickel plating-Gold plated Layer |
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| CN1216059A (en) * | 1997-01-21 | 1999-05-05 | 李起元 | Composition for cleaning and etching electronic display and substrate |
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| CN101880882A (en) * | 2010-07-01 | 2010-11-10 | 中国科学院宁波材料技术与工程研究所 | Stripping solution for sintered neodymium-iron-boron surface aluminum coating |
| CN102925900A (en) * | 2012-10-19 | 2013-02-13 | 贵州航天林泉电机有限公司 | Alkaline chemical polishing solution and alkaline chemical polishing method |
| CN104562017A (en) * | 2013-10-18 | 2015-04-29 | 青岛市首胜实业有限公司 | Alkaline chemical polishing method of aluminum profile for doors and windows |
| CN105350053A (en) * | 2015-11-09 | 2016-02-24 | 广东长盈精密技术有限公司 | Surface pre-treatment method for metal shells |
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2016
- 2016-12-30 CN CN201611258335.9A patent/CN108265295A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1216059A (en) * | 1997-01-21 | 1999-05-05 | 李起元 | Composition for cleaning and etching electronic display and substrate |
| CN1222585A (en) * | 1997-11-14 | 1999-07-14 | 游天来 | Metal surface treating method |
| CN101880882A (en) * | 2010-07-01 | 2010-11-10 | 中国科学院宁波材料技术与工程研究所 | Stripping solution for sintered neodymium-iron-boron surface aluminum coating |
| CN102925900A (en) * | 2012-10-19 | 2013-02-13 | 贵州航天林泉电机有限公司 | Alkaline chemical polishing solution and alkaline chemical polishing method |
| CN104562017A (en) * | 2013-10-18 | 2015-04-29 | 青岛市首胜实业有限公司 | Alkaline chemical polishing method of aluminum profile for doors and windows |
| CN105350053A (en) * | 2015-11-09 | 2016-02-24 | 广东长盈精密技术有限公司 | Surface pre-treatment method for metal shells |
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|---|---|---|---|---|
| CN109487088A (en) * | 2019-01-14 | 2019-03-19 | 东北大学 | A kind of waste and old plating piece gradient recycling metal process of copper-based nickel plating-Gold plated Layer |
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Application publication date: 20180710 |