CN110249078A - A kind of surface treating method for aluminum product - Google Patents
A kind of surface treating method for aluminum product Download PDFInfo
- Publication number
- CN110249078A CN110249078A CN201780085746.9A CN201780085746A CN110249078A CN 110249078 A CN110249078 A CN 110249078A CN 201780085746 A CN201780085746 A CN 201780085746A CN 110249078 A CN110249078 A CN 110249078A
- Authority
- CN
- China
- Prior art keywords
- solution
- concentration
- sulfuric acid
- treating method
- surface treating
- 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
Classifications
-
- 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
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/18—After-treatment, e.g. pore-sealing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a kind of surface treating method for aluminum product, comprising the following steps: oil removing: step 1 under normal temperature condition, impregnates 3min~5min in the sulfuric acid solution that concentration is 140g/L~200g/L；Alkaline etching: step 2 under the conditions of 40 DEG C~80 DEG C temperature, impregnates 5min~10min in the sodium hydroxide solution that concentration is 40g/L~60g/L；Step 3 neutralizes: 3min~5min is impregnated in the mixed solution of sulfuric acid solution and ammonium persulfate solution；Anodic oxidation: step 4 under the conditions of 15 DEG C~30 DEG C temperature, is electrolysed in the sulfuric acid solution that concentration is 100g/L~200g/L；Sealing of hole: step 5 impregnates 30min~60min, the surfactant includes titanium in the surfactant solution that pH value is 5.5~7.Present invention abrasion resistance properties with higher and corrosion resistance, improve aluminum products surface gloss and flatness.
Description
Technical field
The present invention relates to aluminum products manufacture fields, and in particular to a kind of surface treating method for aluminum product.
Background technique
The surface treatment of aluminum products mainly includes anodic oxidation and chemical oxidation, it wherein needs to carry out preposition processing before oxidation, preposition processing is primarily to remove grease stain, dirt and the oxide layer etc. on aluminum products surface, and needing to carry out Seal treatment after aoxidizing, Seal treatment is primarily to improve the corrosion resistance of oxidation film.Seal treatment generally uses chromium salt solution at present, but the chromium ion in chromium salt solution is a kind of carcinogen, high risks are caused to human body and environment, in view of the above problems, start in the prior art using nickel fluoride, but the oxidation film that the aluminum products surface after nickel fluoride Seal treatment is formed has more stomata, sealing effect is bad, and anticorrosion ability is poor
.Therefore, in order to avoid disadvantage existing in the prior art, it is necessary to make improvement to the prior art.
Summary of the invention
It is an object of the invention to overcome shortcoming and deficiency in the prior art, a kind of surface treating method for aluminum product that can improve Corrosion Protection is provided.
The present invention is realized by following technical solution:
A kind of surface treating method for aluminum product, comprising the following steps:
Oil removing: step 1 under normal temperature condition, impregnates 3min ~ 5min in the sulfuric acid solution that concentration is 140g/L ~ 200g/L
；
Alkaline etching: step 2 under the conditions of 40 DEG C ~ 80 DEG C temperature, is impregnated in the sodium hydroxide solution that concentration is 40g/L ~ 60g/L
5min~10min ；
Step 3 neutralizes: 3min ~ 5min is impregnated in the mixed solution of sulfuric acid solution and ammonium persulfate solution；
Step 4, anodic oxidation: being 100g/L ~ 200g/L in concentration under the conditions of 15 DEG C ~ 30 DEG C temperature
Sulfuric acid solution in be electrolysed；
Sealing of hole: step 5 impregnates 30min ~ 60min in the surfactant solution that PH value is 5.5 ~ 7
, the surfactant includes titanium.
Further, the sulfuric acid solution concentration in the step 3 is 80g/L ~ 110g/L, and the concentration of the ammonium persulfate solution is
5g/L~15g/L 。
Further, the molten long-pending mixed proportion of the sulfuric acid solution and ammonium persulfate solution is 1: 1.
Further, the aluminum ions concentration in the step 4 is 5g/L ~ 30g/L.
Further, the electrolysis time in the step 4 is 10min ~ 20min.
Further, the current density in the step 4 is 0.5
A/dm2~2A/dm2, voltage is 10V ~ 25V.
Further, the Ti content in the step 5 is 80% ~ 95%.
Further, the Ti content is 80%.
Compared with the existing technology, the present invention using titanium in sealing of hole step as activating agent by improving the consistency of oxidation film, to improve Corrosion Protection.
Specific embodiment
It is clearly and completely described below in conjunction with the technical solution in the embodiment of the present invention, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, shall fall within the protection scope of the present invention.
A kind of surface treating method for aluminum product of the invention, comprising the following steps:
Oil removing: step 1 under normal temperature condition, impregnates 3min ~ 5min in the sulfuric acid solution that concentration is 140g/L ~ 200g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.
Alkaline etching: step 2 under the conditions of 40 DEG C ~ 80 DEG C temperature, is impregnated in the sodium hydroxide solution that concentration is 40g/L ~ 60g/L
5min~10min ；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.
Step 3 neutralizes: 3min ~ 5min is impregnated in the mixed solution of sulfuric acid solution and ammonium persulfate solution；Sulfuric acid solution concentration is
80g/L ~ 110g/L, the concentration of ammonium persulfate solution are 5g/L ~ 15g/L.The molten long-pending mixed proportion of sulfuric acid solution and ammonium persulfate solution is 1: 1
.Neutralization procedure can not only improve oil removal efficiency using the mixed solution of sulfuric acid solution and ammonium persulfate solution, and same mixed solution can use repeatedly, reduce the usage amount of raw material, improve working efficiency.
Step 4, anodic oxidation: being 100g/L ~ 200g/L in concentration under the conditions of 15 DEG C ~ 30 DEG C temperature
Sulfuric acid solution in be electrolysed；Aluminum ions concentration is 5g/L ~ 30g/L.Electrolysis time is 10min ~ 20min.Current density is 0.5
A/dm2~2A/dm2, voltage is 10V ~ 25V.Electrolysis time can be adjusted according to the thickness of oxidation film.
Sealing of hole: step 5 impregnates 30min ~ 60min in the surfactant solution that PH value is 5.5 ~ 7
, surfactant includes titanium.Ti content is 80% ~ 95%.
Embodiment 1
A kind of surface treating method for aluminum product of the invention, comprising the following steps:
Oil removing: step 1 under normal temperature condition, impregnates 4min in the sulfuric acid solution that concentration is 140g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.
Alkaline etching: step 2 under the conditions of 50 DEG C of temperature, impregnates 5min in the sodium hydroxide solution that concentration is 60g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.
Step 3 neutralizes: impregnating 3min in the mixed solution of sulfuric acid solution and ammonium persulfate solution；Sulfuric acid solution concentration is 80g/L
, the concentration of ammonium persulfate solution is 5g/L.The molten long-pending mixed proportion of sulfuric acid solution and ammonium persulfate solution is 1: 1.The neutralization time is short, high-efficient.
Anodic oxidation: step 4 under the conditions of 30 DEG C of temperature, is electrolysed in the sulfuric acid solution that concentration is 100g/L；Aluminum ions concentration is
5g/L .Electrolysis time is 10min.Current density is 0.5 A/dm2, voltage 10V.
Sealing of hole: step 5 impregnates 30min in the surfactant solution that PH value is 5.5, surfactant includes titanium.Ti content is
80% 。
Embodiment 2
A kind of surface treating method for aluminum product of the invention, comprising the following steps:
Oil removing: step 1 under normal temperature condition, impregnates 5min in the sulfuric acid solution that concentration is 200g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.
Alkaline etching: step 2 under the conditions of 80 DEG C of temperature, impregnates 5min in the sodium hydroxide solution that concentration is 60g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.
Step 3 neutralizes: impregnating 5min in the mixed solution of sulfuric acid solution and ammonium persulfate solution；Sulfuric acid solution concentration is 110g/L
, the concentration of ammonium persulfate solution is 15g/L.The molten long-pending mixed proportion of sulfuric acid solution and ammonium persulfate solution is 1: 1.
Anodic oxidation: step 4 under the conditions of 15 DEG C of temperature, is electrolysed in the sulfuric acid solution that concentration is 200g/L；Aluminum ions concentration is
30g/L .Electrolysis time is 20min.Current density is 2A/dm2, voltage 25V.
Sealing of hole: step 5 impregnates 60min in the surfactant solution that PH value is 6, surfactant includes titanium.Ti content is 95%
.The consistency of oxidation film can be effectively improved using technical solution of the present invention, improve Corrosion Protection.
Embodiment 3
A kind of surface treating method for aluminum product of the invention, comprising the following steps:
Oil removing: step 1 under normal temperature condition, impregnates 4min in the sulfuric acid solution that concentration is 180g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.Concentration and the soaking time of sulfuric acid solution can be adjusted according to the oil stain thing on aluminum products surface.
Alkaline etching: step 2 under the conditions of 70 DEG C of temperature, impregnates 6min in the sodium hydroxide solution that concentration is 50g/L
；In order to accelerate efficiency, aluminum products can be mentioned with extension inclination and sluiced, number of operations is twice.Soaking time is also unsuitable too long.
Step 3 neutralizes: impregnating 3min in the mixed solution of sulfuric acid solution and ammonium persulfate solution；Sulfuric acid solution concentration is 90g/L
, the concentration of ammonium persulfate solution is 10g/L.The molten long-pending mixed proportion of sulfuric acid solution and ammonium persulfate solution is 1: 1.The neutralization time is short, high-efficient.
Anodic oxidation: step 4 under the conditions of 30 DEG C of temperature, is electrolysed in the sulfuric acid solution that concentration is 150g/L；Aluminum ions concentration is
15g/L .Electrolysis time is 15min.Current density is 1 A/dm2, voltage 15V.
Sealing of hole: step 5 impregnates 40min in the surfactant solution that PH value is 6, surfactant includes titanium.Ti content is 90%
.Aluminum products surface clean effect is good, and the consistency of oxidation film is high, and Corrosion Protection is good.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, and all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
- A kind of surface treating method for aluminum product, it is characterised in that: the following steps are included:Oil removing: step 1 under normal temperature condition, impregnates 3min ~ 5min in the sulfuric acid solution that concentration is 140g/L ~ 200g/L；Alkaline etching: step 2 under the conditions of 40 DEG C ~ 80 DEG C temperature, impregnates 5min ~ 10min in the sodium hydroxide solution that concentration is 40g/L ~ 60g/L；Step 3 neutralizes: 3min ~ 5min is impregnated in the mixed solution of sulfuric acid solution and ammonium persulfate solution；Anodic oxidation: step 4 under the conditions of 15 DEG C ~ 30 DEG C temperature, is electrolysed in the sulfuric acid solution that concentration is 100g/L ~ 200g/L；Sealing of hole: step 5 impregnates 30min ~ 60min, the surfactant includes titanium in the surfactant solution that pH value is 5.5 ~ 7.
- Surface treating method for aluminum product according to claim 1, it is characterised in that: the sulfuric acid solution concentration in the step 3 is 80g/L ~ 110g/L, and the concentration of the ammonium persulfate solution is 5g/L ~ 15g/L.
- Surface treating method for aluminum product according to claim 2, it is characterised in that: the molten long-pending mixed proportion of the sulfuric acid solution and ammonium persulfate solution is 1:1.
- Surface treating method for aluminum product according to claim 1, it is characterised in that: the aluminum ions concentration in the step 4 is 5g/L ~ 30g/L.
- Surface treating method for aluminum product according to claim 1, it is characterised in that: the electrolysis time in the step 4 is 10min ~ 20min.
- Surface treating method for aluminum product according to claim 1, it is characterised in that: the current density in the step 4 is 0.5 A/dm2 ~ 2A/dm2, voltage are 10V ~ 25V.
- Surface treating method for aluminum product according to claim 1, it is characterised in that: the Ti content in the step 5 is 80% ~ 95%.
- Surface treating method for aluminum product according to claim 7, it is characterised in that: the Ti content is 80%.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/074083 WO2018148960A1 (en) | 2017-02-20 | 2017-02-20 | Surface treatment method for aluminum product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110249078A true CN110249078A (en) | 2019-09-17 |
Family
ID=63169721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780085746.9A Pending CN110249078A (en) | 2017-02-20 | 2017-02-20 | A kind of surface treating method for aluminum product |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110249078A (en) |
| WO (1) | WO2018148960A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110079848B (en) * | 2019-04-28 | 2021-02-23 | 安徽华淮新材料有限公司 | Aluminum alloy chemical coarse sand surface treatment method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590086A (en) * | 2013-11-14 | 2014-02-19 | 佛山市三水雄鹰铝表面技术创新中心有限公司 | Nickel-free hole sealing agent for aluminum alloy and hole sealing treatment process of agent |
| CN104674319A (en) * | 2014-11-25 | 2015-06-03 | 江门市蓬江区善长五金制品有限公司 | Surface treating method for aluminum product |
| CN105200482A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Nickel-free hole sealing agent for improving abrasion resistance of aluminum alloy anode oxide film and preparation method of nickel-free hole sealing agent |
| CN105200485A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Aluminum alloy anode oxide film nickel-free sealant high in thermal stability and preparation method thereof |
| CN105200483A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Mid-temperature treatment aluminum alloy anode oxide film nickel-free hole sealing agent and preparation method thereof |
| CN105239130A (en) * | 2015-09-24 | 2016-01-13 | 马鞍山杰创塑胶科技有限公司 | High-antiseptic aluminum alloy anode oxide film non-nickel sealant and preparation method thereof |
| CN105543932A (en) * | 2016-02-03 | 2016-05-04 | 温州安能科技有限公司 | Continuous surface treatment technology for aluminum alloy strip |
| CN105603486A (en) * | 2015-09-30 | 2016-05-25 | 浙江帝龙新材料股份有限公司 | Aluminum strip continuous anodic oxidation process |
| CN105951150A (en) * | 2016-05-18 | 2016-09-21 | 安徽省安庆市金誉金属材料有限公司 | Surface treatment process for aluminum plate |
| CN106133204A (en) * | 2014-03-24 | 2016-11-16 | 肯联铝业机床杰钦有限公司 | Have that the 6XXX alloy of low roughness is made and through turning and the production method of anodised machine components after anodic oxidation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104005072B (en) * | 2014-05-30 | 2017-04-26 | 中南大学 | Method for sealing aluminum-alloy surface anode oxide film hole by adopting titanium dioxide gel |
-
2017
- 2017-02-20 CN CN201780085746.9A patent/CN110249078A/en active Pending
- 2017-02-20 WO PCT/CN2017/074083 patent/WO2018148960A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103590086A (en) * | 2013-11-14 | 2014-02-19 | 佛山市三水雄鹰铝表面技术创新中心有限公司 | Nickel-free hole sealing agent for aluminum alloy and hole sealing treatment process of agent |
| CN106133204A (en) * | 2014-03-24 | 2016-11-16 | 肯联铝业机床杰钦有限公司 | Have that the 6XXX alloy of low roughness is made and through turning and the production method of anodised machine components after anodic oxidation |
| CN104674319A (en) * | 2014-11-25 | 2015-06-03 | 江门市蓬江区善长五金制品有限公司 | Surface treating method for aluminum product |
| CN105200482A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Nickel-free hole sealing agent for improving abrasion resistance of aluminum alloy anode oxide film and preparation method of nickel-free hole sealing agent |
| CN105200485A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Aluminum alloy anode oxide film nickel-free sealant high in thermal stability and preparation method thereof |
| CN105200483A (en) * | 2015-09-24 | 2015-12-30 | 马鞍山杰创塑胶科技有限公司 | Mid-temperature treatment aluminum alloy anode oxide film nickel-free hole sealing agent and preparation method thereof |
| CN105239130A (en) * | 2015-09-24 | 2016-01-13 | 马鞍山杰创塑胶科技有限公司 | High-antiseptic aluminum alloy anode oxide film non-nickel sealant and preparation method thereof |
| CN105603486A (en) * | 2015-09-30 | 2016-05-25 | 浙江帝龙新材料股份有限公司 | Aluminum strip continuous anodic oxidation process |
| CN105543932A (en) * | 2016-02-03 | 2016-05-04 | 温州安能科技有限公司 | Continuous surface treatment technology for aluminum alloy strip |
| CN105951150A (en) * | 2016-05-18 | 2016-09-21 | 安徽省安庆市金誉金属材料有限公司 | Surface treatment process for aluminum plate |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018148960A1 (en) | 2018-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110249078A (en) | A kind of surface treating method for aluminum product | |
| JPH0759759B2 (en) | Method and apparatus for descaling annealed stainless steel strip | |
| CN110241449A (en) | A kind of method of 6 line aluminium alloy surface insulation oxidation | |
| CN106191959A (en) | A kind of environment-friendly type aluminium alloy sealing agent | |
| CN101824645A (en) | Method for eliminating oxide skins on stainless steel surface by micro-arc | |
| BE893883Q (en) | PROCESS FOR STRIPPING COPPER OR COPPER ALLOY SURFACES | |
| CN110129858A (en) | A kind of ionic liquid auxiliary magnesium lithium alloy anode oxidation film-forming method | |
| DE1421994A1 (en) | Process, device and means for cleaning metal surfaces | |
| DE1496927A1 (en) | Process for coating objects with a shiny nickel-chromium coating | |
| DE2642816A1 (en) | PROCESS FOR IMPROVING THE ELECTROPLATING CAPABILITY OF STEELS | |
| WO2021101076A1 (en) | Ionic liquid for pickling stainless steel and method for pickling stainless steel by using same | |
| CN104195614A (en) | Passivator and aluminum alloy pre-treatment technology | |
| CN109321952A (en) | A kind of copper-plating technique of handware | |
| WO2016106523A1 (en) | Trivalent chromium/aluminum passivation treatment process and application thereof | |
| CN105483812B (en) | A kind of degreasing method in rolled copper foil surface treatment process | |
| CN103088358A (en) | Surface treatment method of water electrolysis pole plate before plating | |
| CN103122473B (en) | A kind of stainless steel electrochemical coloring liquid and a kind of stainless steel electrochemical blackening method | |
| CN205295530U (en) | Phosphating steel wire wire rod electrolytic pickling device that derusts | |
| JPS5735699A (en) | Production of chrome plated steel plate of superior adhesiveness | |
| CN1015481B (en) | Sodium salt zn-plating secondary passivation filming technology | |
| DE4229072A1 (en) | Restoring reinforced concrete by electrolytic removal of chloride ions - using electrolyte with resistance not negligible compared with that of concrete to reduce decomposition of water caused by varying thickness | |
| US2823178A (en) | Process of treating sulphite waste | |
| CA1154713A (en) | Electrical connector of tantalum or niobium for cathodic protection system | |
| SE7501837L (en) | ||
| JPS57192293A (en) | Manufacture of surface treated steel sheet of excellent paint adherence |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190917 |