CN109537018A - Welded anode oxidation method and its application - Google Patents
Welded anode oxidation method and its application Download PDFInfo
- Publication number
- CN109537018A CN109537018A CN201811493109.8A CN201811493109A CN109537018A CN 109537018 A CN109537018 A CN 109537018A CN 201811493109 A CN201811493109 A CN 201811493109A CN 109537018 A CN109537018 A CN 109537018A
- Authority
- CN
- China
- Prior art keywords
- aluminium layer
- welding
- welding structure
- welded
- oxidation method
- 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.)
- Granted
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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- 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
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/10—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing organic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Treatment Of Metals (AREA)
- Arc Welding In General (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The present invention relates to a kind of welded anode oxidation method and its applications.The welded anode oxidation method includes the following steps: that offer welding structure, welding structure have welding surface, form weld seam on welding surface；Aluminium layer is formed on welding surface, and welding surface is completely covered in aluminium layer；And anodized is carried out to the welding structure for forming aluminium layer.Above-mentioned welded anode oxidation method can obtain that thickness is uniform and the uniform oxide layer of color.
Description
Technical field
The present invention relates to technical field of metal material, more particularly to a kind of welded anode oxidation method and its answer
With.
Background technique
Since aluminum alloy junction component is after anodized, wearability, the corrosion resistant of aluminum alloy junction component can be enhanced
The characteristics such as corrosion, electrical isolation and thermal insulation, meanwhile, the dyestuff of different colours can directly colour on anodic oxide coating and with sun
The binding force of pole oxide layer is strong, and the aluminum alloy junction component after more and more anodic oxidations is applied to rear cover and the side of electronic product
In the components such as frame.However, aluminum alloy junction component inevitably needs to carry out soldering in use, to form difference
The structure of shape and adapt to different product demands.For aluminum alloy piping welding structural member, under the influence of sweating heat, weld seam periphery
The material structure and ingredient in region change, and causing, which will be unable to after anodic oxidation, obtains thickness and the uniform anodic oxygen of color
Change layer.Some study through the thickness of change material obtains thickness and the uniform anodic oxide coating of color, but this operation
The structure design of drastic delimitations product.
Summary of the invention
Based on this, it is necessary to which providing a kind of can obtain that thickness is uniform and the welded sun of the uniform oxide layer of color
Pole method for oxidation.
In addition, also providing a kind of application of welding structure anode oxidation method.
A kind of welded anode oxidation method, includes the following steps:
Welding structure is provided, the welding structure has welding surface, forms weld seam on the welding surface；
Aluminium layer is formed on the welding surface, and the welding surface is completely covered in the aluminium layer；And
Anodized is carried out to the welding structure for forming the aluminium layer.
Above-mentioned welded anode oxidation method is by forming aluminium layer to welded welding surface, and aluminium layer covers completely
Lid welding surface carries out anodized to the welding structure for forming aluminium layer, can obtain that thickness is uniform and the uniform oxygen of color
Change layer.Experiment proves that using above-mentioned welded anode oxidation method obtain oxide layer with a thickness of 5 μm~50 μm, oxygen
The thickness of change layer is uniform and color is uniform.
It is described before the step of forming aluminium layer on the welding surface in one of the embodiments, it further include to described
Weld seam is processed by shot blasting.
The described the step of weld seam is processed by shot blasting in one of the embodiments, specifically: use CNC device
It is ground the surface of the weld seam.
The material of the aluminium layer is aluminum or aluminum alloy in one of the embodiments,；The welded material is 5 systems
Column aluminium alloy, 6 series alloys or 7 series alloys.
The mode that aluminium layer is formed on the welding surface is that surface increases material technology in one of the embodiments,.
The mode that aluminium layer is formed on the welding surface is that jet deposition or 3D are beaten in one of the embodiments,
Print.
It is described the step of forming aluminium layer on the welding surface in one of the embodiments, specifically: to use 0.7MPa
The inert gas of~0.75MPa will spray liquid mist and spray on the welding surface, forming the aluminium layer, the injection liquid with
Mass percentage meter include 9%~12% Zn, 2.5%~3.2% Mg, 1.5%~2.5% Cu, 0.1%~
The thickness of 0.2% Zr, the aluminium layer are greater than 20 μm.
The described pair of welding structure for forming the aluminium layer carries out anodized in one of the embodiments,
Step includes:
Anodic oxidation is carried out to the welding structure for forming the aluminium layer using electrolyte, so as to form the aluminium layer
The welded surface forms oxide layer, and the electrolyte includes the sulfuric acid of 150g/L~200g/L, 20g/L~40g/L
Oxalic acid, the malic acid of 3g/L~5g/L, the lactic acid of 5mg/L~10mg/L, the triethanolamine of 10g/L~15g/L and 5g/L~
The aluminum sulfate of 20g/L；And
Coloring treatment and Seal treatment are successively carried out to the oxide layer.
Anodic oxidation is carried out to the welding structure for forming the aluminium layer using electrolyte in one of the embodiments,
The step of in, the temperature of oxidation is 20 DEG C~40 DEG C, and voltage is 14V~18V, current density 2.0A/dm2~3.0A/dm2, oxygen
The time of change is 40min~60min.
Welded anode oxidation method described in any one of above-described embodiment is preparing the application in electronic product.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.It is shown below of the invention
Preferred embodiment.But the invention can be realized in many different forms, however it is not limited to implementation described herein
Example.It is made the disclosure of the present invention more thorough and comprehensive on the contrary, purpose of providing these embodiments is.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
The welded anode oxidation method of one embodiment, including S110~S130 is operated as follows:
S110, welding structure is provided, welding structure has welding surface, forms weld seam on welding surface.
Welding surface is one or more in one of the embodiments,.Weld seam is one or more.It should be noted that
When weld seam is multiple and welding surface is one, weld interval is distributed on welding surface.
Welded material is that 5 series alloys, 6 series alloys or 7 series aluminums are closed in one of the embodiments,
Gold.Further, welded material is 5052 aluminium alloys, 6063 aluminium alloys, 7k02 aluminium alloy or 6061 aluminium alloys.It needs
Illustrate, welding structure is not limited to the above-mentioned aluminium alloy pointed out, other kinds of aluminium alloy can be used for production welding knot
Structure.
S120, aluminium layer is formed on welding surface, and welding surface is completely covered in aluminium layer.
The material of aluminium layer is aluminum or aluminum alloy in one of the embodiments,.
When the material of aluminium layer is aluminium alloy in one of the embodiments, the material of aluminium layer is 5052 aluminium alloys, 6063 aluminium
Alloy or 7K02 aluminium alloy.It should be noted that aluminium layer is not limited to the above-mentioned aluminium alloy pointed out, other kinds of aluminium alloy can also
For making aluminium layer.It should be noted that when the material of welding structure and aluminium layer is aluminium alloy, welding structure with
Aluminium layer can be same aluminium alloy, or different aluminium alloys.
The thickness of aluminium layer is greater than 20 μm in one of the embodiments,.Further, aluminium layer with a thickness of 20 μm~100 μ
m。
The mode for forming aluminium layer on welding surface in one of the embodiments, is that surface increases material technology.
The mode for forming aluminium layer on welding surface in one of the embodiments, is jet deposition or 3D printing.It needs to illustrate
, the mode that aluminium layer is formed on welding surface is not limited to above-mentioned point out mode, or other modes, such as magnetron sputtering or
Plasma activated chemical vapour deposition.It can be configured according to the actual situation, as long as can make to form aluminium layer on welding surface.
In one of the embodiments, the step of forming aluminium layer on welding surface specifically: use 0.7MPa~0.75MPa
Inert gas will spray liquid mist and spray on welding surface, form aluminium layer.Wherein, injection liquid is wrapped in terms of mass percentage
Include 9%~12% Zn, 2.5%~3.2% Mg, 1.5%~2.5% Cu, 0.1%~0.2% Zr.
Further, inert gas is selected from least one of nitrogen and helium.
It further include being processed by shot blasting to weld seam in one of the embodiments, before S120, to remove the surface of weld seam
Oxidation film, and keep welded surface more uniform.It should be noted that if when welding structure surface does not have oxidation film,
The step also can be omitted.
Further, the step of weld seam being processed by shot blasting specifically: using the surface of CNC device grinding weld seam.It needs
It is noted that being not limited to the above-mentioned mode pointed out to the mode that weld seam is processed by shot blasting, or other modes, such as
It can be the modes such as sand paper polishes or use chemical reagent is processed by shot blasting.
It further include at cleaning polishing before S120 after being processed by shot blasting in one of the embodiments, to weld seam
Welding structure after reason.It is dirty with the grease stain and the dust that remove the welding structure surface after polishing treatment etc. by cleaning.Into one
Step ground, cleaning polishing treated welded operation specifically: degreasing is successively carried out to the welding structure after polishing treatment
Processing and alkali cleaning.
Specifically, the operation of ungrease treatment is carried out to the welding structure after polishing treatment specifically: contain using quality percentage
Amount carries out ungrease treatment to the welding structure after polishing treatment at 40 DEG C~60 DEG C for the aqueous solution of 10%~20% sulfuric acid.
Processing mode is to impregnate or spray.The processing time is 3min~5min.
The operation of alkali cleaning is carried out to the welding structure after ungrease treatment specifically: using lye to de- at 40 DEG C~60 DEG C
Rouge treated welding structure cleans 3min~5min.Lye is the water for the sodium hydroxide that mass percentage is 30%~50%
Solution.The mode of alkali cleaning is to impregnate or spray.
In one of the embodiments, after carrying out ungrease treatment to the welding structure after polishing treatment, to degreasing
It further include being washed to the welding structure after ungrease treatment before welding structure that treated carries out alkali cleaning.The temperature of washing
It is 30 DEG C~40 DEG C, washing time is 5min~10min.Water is deionized water or pure water.The mode of washing is spray or impregnates.
In one of the embodiments, after the step of carrying out alkali cleaning to the welding structure after ungrease treatment, in S120
It before, further include being washed to the welding structure after alkali cleaning.The temperature of washing be 30 DEG C~40 DEG C, washing time be 5min~
10min.Water is deionized water or pure water.The mode of washing is spray or impregnates.
It should be noted that if the welding structure surface after polishing treatment is dirty without grease stain and dust etc., cleaning polishing
Treated, and welded operation can be omitted.
S130, anodized is carried out to the welding structure for forming aluminium layer.
Specifically, S130 includes following operation S131~S132:
S131, anodic oxidation is carried out to the welding structure for forming aluminium layer with electrolyte, so as to form the welding structure of aluminium layer
Surface formed oxide layer.Electrolyte includes the sulfuric acid of 150g/L~200g/L, the oxalic acid of 20g/L~40g/L, 3g/L~5g/L
Malic acid, the lactic acid of 5mg/L~10mg/L, the triethanolamine of 10g/L~15g/L and 5g/L~20g/L aluminum sulfate.It needs
Illustrate, electrolyte further includes solvent.Solvent in electrolyte can be deionized water, or pure water.
The concentration of sulfuric acid and aluminum sulfate ratio is 10~20 in electrolyte in one of the embodiments,.It, can under this concentration
Keep oxide layer more uniform.
The temperature aoxidized in one of the embodiments, is 20 DEG C~40 DEG C, and voltage is 14V~18V, and current density is
2.0A/dm2~3.0A/dm2, the time of oxidation is 40min~60min.Wherein, voltage is DC voltage.The temperature of oxidation is 22
DEG C~28 DEG C.The time of oxidation is 50min~60min.
It should be noted that the mode for carrying out anodized to the welding structure for forming aluminium layer is not limited to above-mentioned point out
Mode, can be other anodizeds commonly used in the art mode, can be configured according to the actual situation.
S132, coloring treatment and Seal treatment are successively carried out to oxide layer.
The mode that coloring treatment and Seal treatment are successively carried out to oxide layer is mode commonly used in the art, can basis
Actual conditions are configured.
In one of the embodiments, oxide layer with a thickness of 5 μm~50 μm.Further, oxide layer with a thickness of 15 μ
m。
In one of the embodiments, after S120, before S130, further include will be formed the welding structure of aluminium layer according to
Secondary progress degreasing, alkali cleaning and chemical polishing processing.It is handled by this, to remove grease stain and ash in the welding structure for forming aluminium layer
Dirt etc. is dirty, to guarantee the caliper uniformity of oxide layer and the uniformity of color after anodic oxidation.
Specifically, the step of welding structure for forming aluminium layer being subjected to ungrease treatment specifically: be with mass percentage
The aqueous solution of 10%~20% sulfuric acid handles the welding structure for forming aluminium layer.The processing time is 3min~5min.Place
Reason mode is to impregnate or spray.
The step of welding structure after ungrease treatment is subjected to alkali cleaning in one of the embodiments, specifically: use quality
The aqueous solution for the sodium hydroxide that percentage composition is 30%~50% handles the welding structure after ungrease treatment.Processing when
Between be 3min~5min.Processing mode is to impregnate or spray.
The step of welding structure after alkali cleaning is subjected to chemical polishing in one of the embodiments, specifically: with polishing
Liquid is processed by shot blasting the welding structure after alkali cleaning.The processing time is 1min~3min.Processing mode is to impregnate or spray.It throws
Light liquid includes the OP emulsifier of the sodium phosphate of 25g/L, the sodium carbonate of 40g/L, the sodium hydroxide of 3g/L and 8g/L.Further,
OP emulsifier is OP-10 emulsifier.
It should be noted that after the step of welding structure after ungrease treatment is carried out alkali cleaning, by the welding after alkali cleaning
It further include being washed to the welding structure after alkali cleaning before structure carries out the step of chemical polishing.Further, after to alkali cleaning
Welding structure the step of being washed operation specifically: it is clear to the welding structure after alkali cleaning at 35 DEG C~45 DEG C using water
Wash 5min~10min.Wherein, water is deionized water or pure water.The mode of cleaning is spray or impregnates.
It should be noted that before S130, further including after the welding structure after alkali cleaning is carried out chemical polishing processing
Welding structure after chemical polishing is washed.Further, the step of welding structure after chemical polishing being washed
Specifically: 5min~10min is cleaned to the welding structure after chemical polishing at 35 DEG C~45 DEG C using water.Wherein, water is to go
Ionized water or pure water.The mode of cleaning is spray or impregnates.
It further include the welding knot cleaned after anodic oxidation before S132 in one of the embodiments, after S131
Structure.Further, clean anodic oxidation after welding structure the step of specifically: anode is cleaned at 35 DEG C~45 DEG C using water
Welding structure 5min~10min after oxidation.Wherein, water is deionized water or pure water.The mode of cleaning is spray or impregnates.
Above-mentioned welded anode oxidation method is by forming aluminium layer to welded welding surface, and aluminium layer covers completely
Lid welding surface carries out anodized to the welding structure for forming aluminium layer, can obtain that thickness is uniform and the uniform oxygen of color
Change layer, and then can be applied in the preparation of electronic product.Experiment proves that using above-mentioned welded anode oxidation method
Obtained oxide layer with a thickness of 5 μm~50 μm, the thickness of oxide layer is uniform and color is uniform.
The following are specific embodiment parts:
If not otherwise specified, in following embodiment, welding structure is 6063 aluminum alloy welding fittings, welded a length of
100mm, width 50mm, thickness 1.5mm, welding structure have a welding surface, and having a width on welding surface is the weldering of 0.8mm
Seam.OP emulsifier is OP-10 emulsifier.
Embodiment 1
(1) surface of welded weld seam is ground using CNC device.
(2) ungrease treatment: by the water for the sulfuric acid that step (1) treated welding structure is put into mass percentage is 15%
Ungrease treatment in solution, skimming temp are 50 DEG C, degreasing time 4min.
(3) it washes: the welding structure of ungrease treatment is washed.Washing temperature is 35 DEG C, washing time 7min.
(4) welding structure after step (3) washing alkali cleaning: is put into the sodium hydroxide solution that mass percentage is 40%
Middle carry out alkali cleaning, alkali cleaning temperature are 50 DEG C, and the alkali cleaning time is 4min.
(5) washing process: the welding structure after being rinsed with water alkali cleaning.Washing temperature is 35 DEG C, washing time 7min, with
Make the pH value 5.5 of flushing waste.
(6) anodic oxidation: anodic oxidation is carried out to the welding structure after step (5) washing with electrolyte, so as to form aluminium
The welded surface of layer forms oxide layer.The temperature of oxidation is 30 DEG C, voltage 16V, and the time of oxidation is 50min.Electricity
Solution liquid include the sulfuric acid of 180g/L, the oxalic acid of 25g/L, the malic acid of 4g/L, the lactic acid of 8mg/L, 10g/L triethanolamine and
The aluminum sulfate of 10g/L.
(7) coloring treatment and Seal treatment are successively carried out to oxide layer.
Embodiment 2
(1) surface of welded weld seam is ground using CNC device.
(2) ungrease treatment: by the water for the sulfuric acid that step (1) treated welding structure is put into mass percentage is 15%
Ungrease treatment in solution, skimming temp are 50 DEG C, degreasing time 4min.
(3) it washes: the welding structure of ungrease treatment is washed.Washing temperature is 35 DEG C, washing time 7min.
(4) welding structure after step (3) washing alkali cleaning: is put into the sodium hydroxide solution that mass percentage is 40%
Middle carry out alkali cleaning, alkali cleaning temperature are 50 DEG C, and the alkali cleaning time is 4min.
(5) washing process: the welding structure after being rinsed with water alkali cleaning.Washing temperature is 35 DEG C, washing time 7min, with
Make the pH value 5.5 of flushing waste.
(6) liquid mist will be sprayed using the inert gas of 0.7MPa, and sprayed welded after step (5) washing
On welding surface, aluminium layer is formed, the welding structure to form aluminium layer is obtained.Inert gas is nitrogen.Liquid is sprayed with mass percentage
Meter includes 11% Zn, 2.8% Mg, 2% Cu, 0.15% Zr.Aluminium layer with a thickness of 15 μm.
(7) ungrease treatment: with mass percentage be 15% sulfuric acid aqueous solution to formed aluminium layer welding structure into
Row processing.The processing time is 4min.Processing mode is to impregnate.
(8) alkali cleaning: the aqueous solution for the sodium hydroxide for being 40% with mass percentage is to the welding structure after ungrease treatment
It is handled.The time of processing is 4min.Processing mode is to impregnate.
(9) it washes: 7min is cleaned to the welding structure after alkali cleaning at 40 DEG C using water.Wherein, water is deionized water.Clearly
The mode washed is to impregnate.
(10) welding structure after step (9) washing is processed by shot blasting with polishing fluid.The processing time is 2min.Processing
Mode is to impregnate.Polishing fluid includes the OP emulsification of the sodium phosphate of 25g/L, the sodium carbonate of 40g/L, the sodium hydroxide of 3g/L and 8g/L
Agent.
(11) it washes: 7min is cleaned to the welding structure after chemical polishing at 40 DEG C using water.Wherein, water is deionization
Water.The mode of cleaning is to impregnate.
(12) anodic oxidation: anodic oxidation is carried out to the welding structure after step (11) washing with electrolyte, so as to be formed
The welded surface of aluminium layer forms oxide layer.The temperature of oxidation is 30 DEG C, voltage 16V, and the time of oxidation is 50min.
Electrolyte include the sulfuric acid of 180g/L, the oxalic acid of 25g/L, the malic acid of 4g/L, the lactic acid of 8mg/L, 10g/L triethanolamine and
The aluminum sulfate of 10g/L.
(13) coloring treatment and Seal treatment are successively carried out to oxide layer.
Embodiment 3
(1) ungrease treatment: being put into ungrease treatment in the aqueous solution for the sulfuric acid that mass percentage is 15% for welding structure,
Skimming temp is 50 DEG C, degreasing time 4min.
(2) it washes: the welding structure of ungrease treatment is washed.Washing temperature is 35 DEG C, washing time 7min.
(3) welding structure after step (2) washing alkali cleaning: is put into the sodium hydroxide solution that mass percentage is 40%
Middle carry out alkali cleaning, alkali cleaning temperature are 50 DEG C, and the alkali cleaning time is 4min.
(4) washing process: the welding structure after being rinsed with water alkali cleaning.Washing temperature is 35 DEG C, washing time 7min, with
Make the pH value 5.5 of flushing waste.
(5) liquid mist will be sprayed using the inert gas of 0.7MPa, and sprayed welded after step (4) washing
On welding surface, aluminium layer is formed, the welding structure to form aluminium layer is obtained.Inert gas is nitrogen.Liquid is sprayed with mass percentage
Meter includes 11% Zn, 2.8% Mg, 2% Cu, 0.15% Zr.Aluminium layer with a thickness of 15 μm.
(6) ungrease treatment: with mass percentage be 15% sulfuric acid aqueous solution to formed aluminium layer welding structure into
Row processing.The processing time is 4min.Processing mode is to impregnate.
(7) alkali cleaning: the aqueous solution for the sodium hydroxide for being 40% with mass percentage is to the welding structure after ungrease treatment
It is handled.The time of processing is 4min.Processing mode is to impregnate.
(8) it washes: 7min is cleaned to the welding structure after alkali cleaning at 40 DEG C using water.Wherein, water is deionized water.Clearly
The mode washed is to impregnate.
(9) welding structure after step (8) washing is processed by shot blasting with polishing fluid.The processing time is 2min.Processing
Mode is to impregnate.Polishing fluid includes the OP emulsification of the sodium phosphate of 25g/L, the sodium carbonate of 40g/L, the sodium hydroxide of 3g/L and 8g/L
Agent.
(10) it washes: 7min is cleaned to the welding structure after chemical polishing at 40 DEG C using water.Wherein, water is deionization
Water.The mode of cleaning is to impregnate.
(11) anodic oxidation: anodic oxidation is carried out to the welding structure after step (10) washing with electrolyte, so as to be formed
The welded surface of aluminium layer forms oxide layer.The temperature of oxidation is 30 DEG C, voltage 16V, and the time of oxidation is 50min.
Electrolyte include the sulfuric acid of 180g/L, the oxalic acid of 25g/L, the malic acid of 4g/L, the lactic acid of 8mg/L, 10g/L triethanolamine and
The aluminum sulfate of 10g/L.
(12) coloring treatment and Seal treatment are successively carried out to oxide layer.
Embodiment 4
(1) surface of welded weld seam is ground using CNC device.
(2) liquid mist will be sprayed using the inert gas of 0.7MPa, and sprays that treated is welded in step (1)
On welding surface, aluminium layer is formed, the welding structure to form aluminium layer is obtained.Inert gas is nitrogen.Liquid is sprayed with mass percentage
Meter includes 11% Zn, 2.8% Mg, 2% Cu, 0.15% Zr.Aluminium layer with a thickness of 15 μm.
(3) ungrease treatment: with mass percentage be 15% sulfuric acid aqueous solution to formed aluminium layer welding structure into
Row processing.The processing time is 4min.Processing mode is to impregnate.
(4) alkali cleaning: the aqueous solution for the sodium hydroxide for being 40% with mass percentage is to the welding structure after ungrease treatment
It is handled.The time of processing is 4min.Processing mode is to impregnate.
(5) it washes: 7min is cleaned to the welding structure after alkali cleaning at 40 DEG C using water.Wherein, water is deionized water.Clearly
The mode washed is to impregnate.
(6) welding structure after alkali cleaning is processed by shot blasting with polishing fluid.The processing time is 2min.Processing mode is leaching
Bubble.Polishing fluid includes the OP emulsifier of the sodium phosphate of 25g/L, the sodium carbonate of 40g/L, the sodium hydroxide of 3g/L and 8g/L.
(7) it washes: 7min is cleaned to the welding structure after chemical polishing at 40 DEG C using water.Wherein, water is deionization
Water.The mode of cleaning is to impregnate.
(8) anodic oxidation: anodic oxidation is carried out to the welding structure after step (7) washing with electrolyte, so as to form aluminium
The welded surface of layer forms oxide layer.The temperature of oxidation is 30 DEG C, voltage 16V, and the time of oxidation is 50min.Electricity
Solution liquid include the sulfuric acid of 180g/L, the oxalic acid of 25g/L, the malic acid of 4g/L, the lactic acid of 8mg/L, 10g/L triethanolamine and
The aluminum sulfate of 10g/L.
(9) coloring treatment and Seal treatment are successively carried out to oxide layer.
Embodiment 5
(1) surface of welded weld seam is ground using CNC device.
(2) ungrease treatment: by the water for the sulfuric acid that step (1) treated welding structure is put into mass percentage is 15%
Ungrease treatment in solution, skimming temp are 50 DEG C, degreasing time 4min.
(3) it washes: the welding structure of ungrease treatment is washed.Washing temperature is 35 DEG C, washing time 7min.
(4) welding structure after step (3) washing alkali cleaning: is put into the sodium hydroxide solution that mass percentage is 40%
Middle carry out alkali cleaning, alkali cleaning temperature are 50 DEG C, and the alkali cleaning time is 4min.
(5) washing process: the welding structure after being rinsed with water alkali cleaning.Washing temperature is 35 DEG C, washing time 7min, with
Make the pH value 5.5 of flushing waste.
(6) liquid mist will be sprayed using the inert gas of 0.7MPa, and sprayed welded after step (5) washing
On welding surface, aluminium layer is formed, the welding structure to form aluminium layer is obtained.Inert gas is nitrogen.Liquid is sprayed with mass percentage
Meter includes 11% Zn, 2.8% Mg, 2% Cu, 0.15% Zr.Aluminium layer with a thickness of 15 μm.
(7) anodic oxidation: anodic oxidation is carried out to the welding structure for forming aluminium layer with electrolyte, so as to form the weldering of aluminium layer
The surface of binding structure forms oxide layer.The temperature of oxidation is 30 DEG C, voltage 16V, and the time of oxidation is 50min.Electrolyte packet
Include the sulfuric acid of 180g/L, the oxalic acid of 25g/L, the malic acid of 4g/L, the lactic acid of 8mg/L, the triethanolamine of 10g/L and 10g/L
Aluminum sulfate.
(8) coloring treatment and Seal treatment are successively carried out to oxide layer.
Test:
To the oxygen on surface where the color difference and weld seam of the oxide layer on surface where the welded weld seam of Examples 1 to 5
The caliper uniformity for changing layer is measured.See Table 1 for details for measurement result.What table 1 indicated is the welded weldering of Examples 1 to 5
The thickness of the oxide layer on surface where the color difference and weld seam of the oxide layer on surface where seam.
Wherein, using the thickness for being measured microscopically method measurement aluminium layer, in triplicate, the average value table of measurement result three times
Show；
According to GB/T 14952.3-1994 " aluminium and aluminium alloy anode oxide coloring anode oxide film color difference and presentation quality
The method of inspection " using the color difference of the oxide layer on surface where color difference meter measurement weld seam；
Using the thickness of the oxide layer on surface where cross sectional thickness micrometering method measurement weld seam.Specifically, uniformly choosing
Five regions in the oxide layer are taken, the oxide layer in five regions, at least two region is located on weld seam, at least two regions
Oxide layer is located at except weld seam, is measured with thickness of the metallography microscope camera lens to the oxide layer in five regions, is averaged work
For the thickness of oxide layer.The average value and variance of the thickness in five regions are calculated, is as a result indicated with average value ± variance.
Table 1
| The thickness (μm) of oxide layer | The value of chromatism (DE) of oxide layer | |
| Embodiment 1 | 15±3 | Color > 5DE |
| Embodiment 2 | 15±1 | Color≤5DE |
| Embodiment 3 | 15±2.5 | Color≤5DE |
| Embodiment 4 | 15±2 | Color≤5DE |
| Embodiment 5 | 15±3 | Color > 5DE |
As it can be seen from table 1 value of chromatism≤5 for the welded oxide layer that embodiment 2~4 obtains, are less than embodiment 1
The value of chromatism (> 5) of obtained welded oxide layer illustrates by carrying out anode again after forming aluminium layer in welding structure
Oxidation, can reduce the color difference of oxide layer.The welded oxide layer that embodiment 2 obtains with a thickness of 15 μm ± 1 μm, and it is real
Apply the welded oxide layer that example 1 obtains with a thickness of 15 μm ± 3 μm, illustrate the welded oxidation that embodiment 2 obtains
The thickness of layer is more uniform.
Wherein, the welded oxide layer that embodiment 3 obtains with a thickness of 15 μm ± 2.5 μm, illustrate that embodiment 3 obtains
The welded oxide layer that obtains not as good as embodiment 2 of welded oxide layer it is uniform, further relate to grind using CNC device
The surface for cutting welded weld seam can be improved the homogeneity of oxide layer.The welded oxide layer that embodiment 4 obtains
With a thickness of 15 μm ± 2 μm, it is welded to illustrate that welded oxide layer that embodiment 4 obtains is obtained not as good as embodiment 2
Oxide layer is uniform, further relates to carry out ungrease treatment to welding structure before forming aluminium layer and alkali cleaning processing can be improved oxidation
The homogeneity of layer.The welded oxide layer that embodiment 5 obtains with a thickness of 15 μm ± 3 μm, illustrate the weldering that embodiment 5 obtains
The oxide layer of binding structure is uniform not as good as the welded oxide layer that embodiment 2 obtains, the value of chromatism (> 5) of oxide layer, in turn
Illustrate can be improved the uniform of oxide layer to welding structure progress degreasing, alkali cleaning and polishing treatment before carrying out anodic oxidation
Property, reduce color difference the defects of generation.
In conclusion using the welded anode oxidation method of above embodiment, can obtain thickness it is uniform and
The uniform oxide layer of color, meanwhile, the ingredient of oxide layer is uniform, compact structure, makes it possible to carry out a variety of set to product structure
Meter.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of welded anode oxidation method, which comprises the steps of:
Welding structure is provided, the welding structure has welding surface, forms weld seam on the welding surface；
Aluminium layer is formed on the welding surface, and the welding surface is completely covered in the aluminium layer；And
Anodized is carried out to the welding structure for forming the aluminium layer.
2. welded anode oxidation method according to claim 1, which is characterized in that described on the welding surface
It further include being processed by shot blasting to the weld seam before the step of forming aluminium layer.
3. welded anode oxidation method according to claim 2, which is characterized in that described to be carried out to the weld seam
The step of polishing treatment specifically: the surface of the weld seam is ground using CNC device.
4. welded anode oxidation method according to claim 1, which is characterized in that the material of the aluminium layer is aluminium
Or aluminium alloy；The welded material is 5 series alloys, 6 series alloys or 7 series alloys.
5. welded anode oxidation method according to claim 1, which is characterized in that described on the welding surface
The mode for forming aluminium layer is that surface increases material technology.
6. welded anode oxidation method according to claim 5, which is characterized in that described on the welding surface
The mode for forming aluminium layer is jet deposition or 3D printing.
7. welded anode oxidation method according to claim 6, which is characterized in that described on the welding surface
The step of forming aluminium layer specifically: liquid mist will be sprayed using the inert gas of 0.7MPa~0.75MPa and sprayed in the weldering
In junction, form the aluminium layer, the injection liquid in terms of mass percentage including 9%~12% Zn, 2.5%~3.2%
Mg, 1.5%~2.5% Cu, 0.1%~0.2% Zr, the thickness of the aluminium layer is greater than 20 μm.
8. welded anode oxidation method according to claim 1, which is characterized in that described pair forms the aluminium layer
The welding structure carry out anodized the step of include:
Anodic oxidation is carried out to the welding structure for forming the aluminium layer using electrolyte, so as to form the described of the aluminium layer
Welded surface forms oxide layer, and the electrolyte includes the grass of the sulfuric acid of 150g/L~200g/L, 20g/L~40g/L
The triethanolamine and 5g/L~20g/L of acid, the malic acid of 3g/L~5g/L, the lactic acid of 5mg/L~10mg/L, 10g/L~15g/L
Aluminum sulfate；And
Coloring treatment and Seal treatment are successively carried out to the oxide layer.
9. welded anode oxidation method according to claim 8, which is characterized in that using electrolyte to formation institute
State in the step of the welding structure of aluminium layer carries out anodic oxidation, the temperature of oxidation is 20 DEG C~40 DEG C, voltage be 14V~
18V, current density 2.0A/dm2~3.0A/dm2, the time of oxidation is 40min~60min.
10. welded anode oxidation method according to any one of claims 1 to 9 is preparing the application in electronic product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811493109.8A CN109537018B (en) | 2018-12-07 | 2018-12-07 | Anodic oxidation method for welded structure and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811493109.8A CN109537018B (en) | 2018-12-07 | 2018-12-07 | Anodic oxidation method for welded structure and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109537018A true CN109537018A (en) | 2019-03-29 |
| CN109537018B CN109537018B (en) | 2020-08-18 |
Family
ID=65853038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811493109.8A Active CN109537018B (en) | 2018-12-07 | 2018-12-07 | Anodic oxidation method for welded structure and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109537018B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273171A (en) * | 2019-06-05 | 2019-09-24 | 中国船舶重工集团公司第七二五研究所 | A kind of microflute body oxidation treatment method of the long weld seam of aluminium alloy |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001172796A (en) * | 1999-12-13 | 2001-06-26 | Yamaha Motor Co Ltd | Structural member made of aluminum alloy and motorcycle using the same |
| CN1499191A (en) * | 2002-11-08 | 2004-05-26 | 张皇嘉 | Method for checking welding quality |
| CN101205616A (en) * | 2006-12-20 | 2008-06-25 | 深圳富泰宏精密工业有限公司 | Surface treating method for metal workpieces |
| CN101407931A (en) * | 2008-11-04 | 2009-04-15 | 四川泛华航空仪表电器厂 | Conductive anodic oxidation process for aluminum and alloy part |
| CN102534722A (en) * | 2011-11-28 | 2012-07-04 | 珠海市奥美伦精细化工有限公司 | Pre-dyeing treatment agent for surface of blind hole workpiece in aluminum alloy welding area and application technology thereof |
| US20130029114A1 (en) * | 2010-10-08 | 2013-01-31 | Sumitomo Light Metal Industries, Ltd. | Aluminum alloy welded member |
| CN103358104A (en) * | 2012-04-06 | 2013-10-23 | 富泰华工业（深圳）有限公司 | Metal shell forming method |
-
2018
- 2018-12-07 CN CN201811493109.8A patent/CN109537018B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001172796A (en) * | 1999-12-13 | 2001-06-26 | Yamaha Motor Co Ltd | Structural member made of aluminum alloy and motorcycle using the same |
| CN1499191A (en) * | 2002-11-08 | 2004-05-26 | 张皇嘉 | Method for checking welding quality |
| CN101205616A (en) * | 2006-12-20 | 2008-06-25 | 深圳富泰宏精密工业有限公司 | Surface treating method for metal workpieces |
| CN101407931A (en) * | 2008-11-04 | 2009-04-15 | 四川泛华航空仪表电器厂 | Conductive anodic oxidation process for aluminum and alloy part |
| US20130029114A1 (en) * | 2010-10-08 | 2013-01-31 | Sumitomo Light Metal Industries, Ltd. | Aluminum alloy welded member |
| CN102534722A (en) * | 2011-11-28 | 2012-07-04 | 珠海市奥美伦精细化工有限公司 | Pre-dyeing treatment agent for surface of blind hole workpiece in aluminum alloy welding area and application technology thereof |
| CN103358104A (en) * | 2012-04-06 | 2013-10-23 | 富泰华工业（深圳）有限公司 | Metal shell forming method |
Non-Patent Citations (1)
| Title |
|---|
| DIMITRIOS ELIAS KATSAREAS 等: "Residual Stress Prediction in Dissimilar Metal Weld Pipe Joints using the Finite Element Method", 《MATERIALS SCIENCE FORUM VOLS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273171A (en) * | 2019-06-05 | 2019-09-24 | 中国船舶重工集团公司第七二五研究所 | A kind of microflute body oxidation treatment method of the long weld seam of aluminium alloy |
| CN110273171B (en) * | 2019-06-05 | 2021-04-02 | 中国船舶重工集团公司第七二五研究所 | Micro-groove body oxidation treatment method for long aluminum alloy welding seam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109537018B (en) | 2020-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4721708B2 (en) | Color finishing method | |
| CN102534722B (en) | Pre-dyeing treatment agent for surface of blind hole workpiece in aluminum alloy welding area and application technology thereof | |
| KR102572078B1 (en) | Passivation Surface Treatment of Stainless Steel | |
| TWI496948B (en) | Method for conversion treating surface of magnesium alloy workpiece | |
| CN106086984A (en) | A kind of Microarc Oxidation of Al-mg Alloy method and electrolyte | |
| CN105386030A (en) | Stainless steel surface processing method | |
| USRE24596E (en) | Cleaning aluminium | |
| WO2004022818A1 (en) | The surface treatment of magnesium and its alloys | |
| CN107937958A (en) | A kind of preparation process of novel aluminum alloy anode oxide film | |
| CN106868508A (en) | A kind of vacuum equipment processing chamber wallboard regeneration treating method | |
| CN109537018A (en) | Welded anode oxidation method and its application | |
| DE10149928C1 (en) | Process for treating the surface of a workpiece made from aluminum or aluminum alloy used in the manufacture of car trims comprises polishing the workpiece in an aqueous electrolyte by applying an electrical direct voltage | |
| EP1097255B1 (en) | Process of pre-treating a metallic workpiece before painting | |
| JP3343843B2 (en) | Pre-electrodeposition treatment method for car bodies | |
| WO2004070083A1 (en) | Method for passivating stainless steel product and method for producing stainless steel separator for fuel cell | |
| US4383898A (en) | De-watering of metal surfaces | |
| JPS60116800A (en) | Degreasing and activating method by high speed current inversion electrolysis | |
| US3975215A (en) | Cleaner for tin plated ferrous metal surfaces | |
| CN111250937B (en) | Manufacturing process of titanium alloy packaging barrel | |
| CN115074742A (en) | Cleaning solution and cleaning process for surface treatment of aluminum alloy product | |
| CN216585268U (en) | Anodized aluminum alloy rim | |
| EP3469115B1 (en) | Method of cleaning pretreatment of ferrous components that have been joined by welding | |
| US20210222316A1 (en) | Method for Electrolytic Cleaning of Aluminum | |
| JPS6144200A (en) | Production of steel sheet galvanized on one side | |
| JPS5827997A (en) | Pretreatment of stainless steel for color formation |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |