CN110527880B - Anodic aluminum oxide profile and preparation process thereof - Google Patents
Anodic aluminum oxide profile and preparation process thereof Download PDFInfo
- Publication number
- CN110527880B CN110527880B CN201910795299.7A CN201910795299A CN110527880B CN 110527880 B CN110527880 B CN 110527880B CN 201910795299 A CN201910795299 A CN 201910795299A CN 110527880 B CN110527880 B CN 110527880B
- Authority
- CN
- China
- Prior art keywords
- profile
- aluminum profile
- solution
- aluminum
- anodic
- 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.)
- Active
Links
Classifications
-
- 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
- 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
-
- 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
- C25D11/20—Electrolytic after-treatment
- C25D11/22—Electrolytic after-treatment for colouring layers
-
- 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
- C25D11/24—Chemical after-treatment
- C25D11/246—Chemical after-treatment for sealing layers
Abstract
The invention provides an anodic aluminum oxide profile, which breaks through the process form of the traditional aluminum profile and can improve the strength wear resistance, thermal stability and other properties of the aluminum profile. The invention also provides a preparation process of the anodic aluminum oxide profile, which comprises the steps of cleaning and drying the aluminum profile, and washing away impurities which are stubborn and influence subsequent processes, such as lipids and the like on the aluminum profile; the aluminum profile is placed into electrolyte for anodic oxidation treatment, an oxide layer is generated on the surface of the aluminum profile, and the oxide layer can improve the properties of hardness, wear resistance, corrosion resistance and the like of the surface of the aluminum profile; the aluminum profile is placed into activation liquid for activation treatment, so that the oxide layer forms concave holes, the activation liquid can activate the uniformly distributed concave holes in the oxide layer, the concave holes can absorb micro particles, and the micro particles can be accumulated in the concave holes, so that the surface performance of the aluminum profile can be conveniently adjusted; carrying out anode coloring treatment on the aluminum profile; and (5) hole sealing treatment is carried out on the aluminum profile. The whole process enables the aluminum profile to have stable color and other added properties.
Description
Technical Field
The invention relates to the technical field of aluminum profiles, in particular to an anodic aluminum oxide profile and a preparation process thereof.
Background
Aluminum profiles are more and more commonly used due to superior properties such as strength, processability, weight and the like, for example, in the aviation, aerospace, automobile, machine manufacturing, ship and chemical industries, and solar supports are also often made of aluminum profiles.
For example, chinese patent CN201510921790.1 discloses an aluminum profile processing process, which comprises the following steps: s1: the aluminum profile prototype is formed by processing an aluminum bar into the basic shape of an aluminum profile; s1-1: heating, namely heating the aluminum bar to 490-500 ℃, inspecting the aluminum bar before heating the aluminum bar, and not putting the aluminum bar with silt, oil stain or excessive bending on the surface into a hot shearing furnace; the aluminum bar can not be extruded when the temperature is low or too high, heating is continued when the temperature is low, and the aluminum bar can be taken out of the furnace to be cooled to 480-500 ℃ when the temperature is too high; heating the die to 430-450 ℃, putting the die into a heating furnace for heating for 2-4 h, and finishing the assembly within 5min after the die is taken out of the furnace; heating the material container to 430-450 ℃; s1-2: extruding, wherein the center positions of a die holder, a material container and an extrusion shaft are concentric, the flow rate of the material to be discharged of the die is adjusted, the solid material is 10-70 m/min, the hollow material is 8-20 m/min, and an aluminum bar and an extrusion cake are placed to be extruded into an aluminum profile shape; s1-3: performing separate cooling quenching and material breaking, namely rapidly cooling the extruded basic aluminum profile to be below 204 ℃ by a fan, and breaking the material according to the sliding length of the breaking saw and the joint position of the aluminum profile; s1-4: stretching and straightening, wherein the temperature of the aluminum profile is less than 50 ℃, the stretching rate is less than or equal to 1.5 percent, and the straightening length is as follows: the solid section is 10-20 cm, and the hollow section is 5-10 cm; s1-5: sawing and framing, trimming the end face, putting the stretched and straightened aluminum profile into a sawing table, sawing to a length tolerance of +15mm, and sawing to obtain a qualified aluminum profile for framing; s2: pretreating the aluminum profile, removing oil stains and oxides on the surface of the aluminum profile, so that the surface of the aluminum profile is free of color spots and corrosion spots, and preparing for later spraying; s2-1: inspecting whether the aluminum profile is twisted, beveled and deformed or not, and inspecting whether the surface of the aluminum profile is scratched, napped and bubbled or not; s2-2: sign indicating number material separates with the filler strip between every layer of aluminium alloy, keeps 1 ~ 2 mm' S clearance between aluminium alloy and the aluminium alloy, and every frame aluminium alloy weight of putting things in good order is less than 1000kg, S2-3: degreasing, namely putting the stacked aluminum profiles into a degreasing tank by a crane, wherein the concentration of free acid value of degreasing liquid is 40-60; s2-4: washing, namely putting the degreased aluminum profile into a water tank, washing twice and drying; s2-5: chromizing, namely putting the dried aluminum profile into a chromizing tank, chromizing the aluminum profile for 3-4 min, and drying the tank liquor, wherein the concentration of chromium in the chromizing tank is 6-14 points, and the pH value is 1.5-2.5; s2-6: washing with water, and repeating the step S2-4; s3: spraying an aluminum profile, namely spraying a film layer on the surface of the aluminum profile to prevent oxidation; s3-1: spraying the upper hanger, keeping the type, the direction and the distance between the profiles consistent by the aluminum profiles on the same hanger, wherein the interval is 0.8-1.2 times of the width of the corresponding surface of the profile, and the height of the hanger is 1.8 m; s3-2: powder spraying, chain speed: the spray coating material is less than 1.4MM and is 3.5m/min, the spray coating material is more than 1.4MM and is 3m/min, the electric pressure of a spray gun is adjusted to be 60-90 KV, the current is 10-20 mA, and the powder supply pressure is 0.2-0.4 bar; the atomization air pressure is 0.01-0.1 bar, the distance between the section bar and the spray gun is 150-300 mm, the thickness of the film layer is 70-80 um, S3-3: curing, wherein the curing temperature of the sprayed profile is 200 +/-5 ℃; the curing time is 12-13 minutes, the curing temperature of the wood grain section is 220 +/-5 ℃, the curing time is 15-18 minutes, and S3-4: inspecting a lower hanging finished product, inspecting the coating thickness, the surface quality and the adhesive force of the section bar, covering a film after the section bar is qualified, and performing rework or scrap treatment on unqualified products; s4: the aluminum profile is packaged, the aluminum profile is protected, scratching is prevented, and transportation is facilitated. The concentration of chromium in the chromizing tank in S2-5 is 10-12 points, and the pH value is 2.0-2.2. The aluminum profile packaging in the S4 is carried out according to the following steps: and selecting a protective film package according to the decoration width of the surface of the section bar, wherein the width of the protective film is the width of the section bar plus 5 mm.
In the actual use process, although the aluminum profile can be protected to a certain extent by forming an oxide film on the surface, the aluminum profile still can be subjected to oxidation corrosion after being used for a long time or in a humid environment, the quality, the service life and the like of the device are seriously affected, and huge loss is caused to social resources.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide an anodic aluminum oxide profile capable of improving the strength, wear resistance, thermal stability and other properties of the aluminum profile.
The second purpose of the invention is to provide a preparation process of the anodic aluminum oxide profile with stable color and other added properties.
In order to achieve the purpose, the invention adopts the following technical scheme:
an anodic aluminum oxide profile comprises cylindrical ingots according to the weight percentage in sequence: mg: 2-2.4%, Mn: 0.3-0.4%, Zn: 5.3-5.4%, Cu: 1.5-1.7%, Fe: 0.8-0.9%, Si: 0.8 to 1.2%, Zr: 0.09-0.11%, and the balance of Al and inevitable impurities.
The cylindrical ingot comprises the following components in percentage by weight: mg: 2.2%, Mn: 0.35%, Zn: 5.35%, Cu: 1.6%, Fe: 0.85%, Si: 1%, Zr: 0.1 percent, and the balance of Al and inevitable impurities, and adopts an extrusion molding aluminum profile.
A preparation process of an anodic aluminum oxide profile comprises the following steps:
(1) cleaning and drying the aluminum profile;
(2) placing the aluminum profile into electrolyte for anodic oxidation treatment, and generating an oxide layer on the surface of the aluminum profile;
(3) placing the aluminum profile into an activating solution for activating treatment to enable the oxidation layer to form concave holes;
(4) carrying out anode coloring treatment on the aluminum profile;
(5) and (5) hole sealing treatment is carried out on the aluminum profile.
In the step (4), the oxide layer is hardened while electrolytic coloring is performed; the method comprises the following steps:
s1, grinding the ceramic into ceramic powder, preparing an electrolytic coloring solution, adding the ceramic powder into the electrolytic coloring solution, and uniformly stirring to prepare a colored turbid solution;
and S2, placing the aluminum profile into the colored turbid solution, and adding current for treatment.
In the step (4), the coloring turbid solution comprises nickel sulfate, stannous sulfate and sulfuric acid, the concentrations of the nickel sulfate, the stannous sulfate and the sulfuric acid are 24-26g/L, 3-5g/L and 8-10g/L in sequence, and the pH value of the coloring turbid solution is controlled to be 1.4-1.5.
In the step (4), the current adopts 15-20V alternating voltage, the temperature of the coloring turbid solution is controlled at 15-25 ℃, and the aluminum profile is colored and hardened for more than three minutes.
In the step (4), the ceramic powder has a mesh size of 400 mesh or more.
In the step (4), the ceramic powder is 500-1000 mesh.
In the step (1), the aluminum profile is placed into the caustic soda solution, the caustic soda solution is heated, when the temperature of the caustic soda solution is kept between 35 ℃ and 50 ℃, the surface of the aluminum profile is scrubbed, and then the aluminum profile is sequentially cleaned by deionized water and clear water.
In the step (2), the aluminum profile is placed into sulfuric acid electrolyte with the concentration of 172-178g/L, the concentration of aluminum ions in the electrolyte is 14-16g/L, the temperature of the electrolyte is 18 ℃, and the electrified current density is 55-75A/m2And oxidizing for 15-25min, and then taking out the aluminum profile to be sequentially cleaned by deionized water and clear water.
In the step (3), firstly, an activating solution is prepared, wherein the activating solution is hydrofluoric acid or nickel chloride acid solution, and the aluminum profile is placed into the activating solution, so that an oxide layer on the surface of the aluminum profile is uniformly activated to form uniformly distributed concave holes.
In the step (3), the concentration of the activating solution is 0.22-0.35ml/L, and the aluminum profile is activated in the activating solution for 30-150 s.
In the step (3), the concentration of the activating solution is 0.28-0.3ml/L, and the aluminum profile is activated in the activating solution for 50-100 s.
In the step (5), preparing a cobalt salt and nickel salt hydrolysis salt solution, keeping the temperature of the hydrolysis salt solution at 75-85 ℃, putting the aluminum profile into the hydrolysis salt solution, and electrifying for more than 1000 s.
In the step (5), the cobalt salt is CoX2，CoF2，CoCl2，CoBr2，CoI2，CoOCo(OH)2，CoCO3，Co(NO3)2And CoSO4At least one of; the nickel salt is at least one of nickel sulfate, nickel chloride, nickel fluoride and nickel acetate.
In the step (5), the hydrolyzed salt solution comprises CoSO in a weight ratio of 1-2:1-24·7H2O and NiSO4·7H2O。
In the step (5), the following steps are performed:
s1, preparing a cobalt salt and nickel salt hydrolysis salt solution, grinding the ceramic into ceramic powder, adding the ceramic powder into the hydrolysis salt solution, and uniformly stirring to prepare a hydrolysis turbid solution; keeping the temperature of the turbid hydrolysis solution at 75-85 ℃, and placing the aluminum profile into the turbid hydrolysis solution for more than 1000 s;
and S2, placing the aluminum profile into the hydrolysis turbid solution, and adding current for treatment.
After the technical scheme is adopted, the anodic aluminum oxide profile breaks through the process form of the traditional aluminum profile, and the aluminum profile prepared by the formula can improve the strength wear-resisting property, the thermal stability and other properties of the aluminum profile. Compared with the prior art, the anodic aluminum oxide profile can improve the strength wear resistance, thermal stability and other properties of the aluminum profile.
The invention also provides a preparation process of the anodic aluminum oxide profile, which comprises the steps of cleaning and drying the aluminum profile, and washing away impurities which are stubborn and influence subsequent processes, such as lipids and the like on the aluminum profile; the aluminum profile is placed into electrolyte for anodic oxidation treatment, an oxide layer is generated on the surface of the aluminum profile, and the oxide layer can improve the properties of hardness, wear resistance, corrosion resistance and the like of the surface of the aluminum profile; the aluminum profile is placed into activation liquid for activation treatment, so that the oxide layer forms concave holes, the activation liquid can activate the uniformly distributed concave holes in the oxide layer, the concave holes can absorb micro particles, and the micro particles can be accumulated in the concave holes, so that the surface performance of the aluminum profile can be conveniently adjusted; the aluminum profile is subjected to anodic coloring treatment, so that the aluminum profile has a color with good stability; carry out the hole sealing to the aluminium alloy and handle, can seal the tiny granule that accumulates in the shrinkage pool, realize the stable existence of tiny granule in the shrinkage pool, ensure the stability of aluminium alloy corresponding properties. The whole process enables the aluminum profile to have stable color and other added properties.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
The invention relates to an anodic aluminum oxide profile and a preparation process thereof, wherein a cylindrical ingot sequentially comprises the following components in percentage by weight: mg: 2-2.4%, Mn: 0.3-0.4%, Zn: 5.3-5.4%, Cu: 1.5-1.7%, Fe: 0.8-0.9%, Si: 0.8 to 1.2%, Zr: 0.09-0.11%, and the balance of Al and inevitable impurities.
In a first embodiment, a cylindrical ingot comprises, in order by weight: mg: 2%, Mn: 0.4%, Zn: 5.3%, Cu: 1.7%, Fe: 0.8%, Si: 1.2%, Zr: 0.09%, and the balance of Al and inevitable impurities. The hardness of the aluminum profile is higher than that of aluminum materials 6063-T58 HW and 6063-T611.5HW under the same condition, and the wear resistance is higher than that of aluminum materials 6063, 6005 and 6061 under the same condition.
In the second embodiment, the cylindrical ingot comprises the following components in percentage by weight: mg: 2.4%, Mn: 0.3%, Zn: 5.4%, Cu: 1.5%, Fe: 0.9%, Si: 0.8%, Zr: 0.11%, and the balance of Al and inevitable impurities. The hardness of the aluminum profile is higher than that of aluminum materials 6063-T58 HW and 6063-T611.5HW under the same condition, and the wear resistance is higher than that of aluminum materials 6063, 6005 and 6061 under the same condition.
In the third embodiment, the cylindrical ingot comprises the following components in percentage by weight: mg: 2.2%, Mn: 0.35%, Zn: 5.35%, Cu: 1.6%, Fe: 0.85%, Si: 1%, Zr: 0.1%, and the balance of Al and inevitable impurities. The hardness of the aluminum profile is higher than that of aluminum materials 6063-T58 HW and 6063-T611.5HW under the same condition, and the wear resistance is higher than that of aluminum materials 6063, 6005 and 6061 under the same condition.
A preparation process of an anodic aluminum oxide profile comprises the following steps:
(1) cleaning and drying the aluminum profile, and washing away impurities which are stubborn and influence subsequent processes, such as lipids and the like on the aluminum profile;
(2) the aluminum profile is placed into electrolyte for anodic oxidation treatment, an oxide layer is generated on the surface of the aluminum profile, and the oxide layer can improve the properties of hardness, wear resistance, corrosion resistance and the like of the surface of the aluminum profile;
(3) the aluminum profile is placed into activation liquid for activation treatment, so that the oxide layer forms concave holes, the activation liquid can activate the uniformly distributed concave holes in the oxide layer, the concave holes can absorb micro particles, and the micro particles can be accumulated in the concave holes, so that the surface performance of the aluminum profile can be conveniently adjusted;
(4) the aluminum profile is subjected to anodic coloring treatment, so that the aluminum profile has a color with good stability;
(5) carry out the hole sealing to the aluminium alloy and handle, can seal the tiny granule that accumulates in the shrinkage pool, realize the stable existence of tiny granule in the shrinkage pool, ensure the stability of aluminium alloy corresponding properties. The whole process enables the aluminum profile to have stable color and other added properties.
In order to further enhance the hardness and wear resistance of the surface of the aluminum profile and prolong the service life of the oxide layer, preferably, in the step (4), the oxide layer is hardened while being subjected to electrolytic coloring; the method comprises the following steps:
s1, grinding the ceramic into ceramic powder, preparing an electrolytic coloring solution and placing the electrolytic coloring solution in an electrolytic bath, adding the ceramic powder into the electrolytic coloring solution, and uniformly stirring to prepare a colored turbid solution so that the ceramic powder is uniformly distributed in the electrolytic coloring solution;
s2, placing the aluminum profile into the colored turbid solution of the electrolytic cell, and adding current for treatment. Because the shrinkage pool department of aluminium alloy is more close to the inside metal of aluminium alloy or the inside metal of direct exposed aluminium alloy, the electric current is more concentrated, can adsorb the colored particle (or colored metal ion), the flow of colored particle can drive the ceramic powder in the solution and together accumulate in the shrinkage pool, ceramic powder can show hardness and the wear resistance etc. that improves the aluminium alloy oxide layer, on the basis that can keep the colored stability of oxide layer, ensure that the aluminium alloy oxide layer is not fragile, carry out lasting effectual protection to the inside metal of aluminium alloy, show the life who prolongs the aluminium alloy.
Preferably, in the step (4), the colored turbid solution comprises nickel sulfate, stannous sulfate and sulfuric acid, the concentration of the nickel sulfate, the concentration of the stannous sulfate and the concentration of the sulfuric acid are 24-26g/L, 3-5g/L and 8-10g/L in sequence, and the pH value of the colored turbid solution is controlled to be 1.4-1.5.
Preferably, in the step (4), the current adopts 15-20V alternating voltage, the temperature of the coloring turbid solution is controlled at 15-25 ℃, and the aluminum profile is colored and hardened for more than three minutes.
In the first embodiment, in the step (4), the colored turbid solution includes nickel sulfate, stannous sulfate and sulfuric acid, the concentrations of the nickel sulfate, the stannous sulfate and the sulfuric acid are 24g/L, 5g/L and 8g/L in sequence, and the pH value of the colored turbid solution is controlled to be 1.4. The current adopts 15V alternating voltage, the temperature of the coloring turbid solution is controlled at 25 ℃, the aluminum profile is colored and hardened for three minutes, the coloring is uniform, the color deviation is avoided, the color is not easy to fade after the ceramic powder is hardened, and the brightness is high.
In the second embodiment, in the step (4), the colored turbid solution comprises nickel sulfate, stannous sulfate and sulfuric acid, the concentrations of the nickel sulfate, the stannous sulfate and the sulfuric acid are 26g/L, 3g/L and 10g/L in sequence, and the pH value of the colored turbid solution is controlled to be 1.5. The current adopts 20V alternating voltage, the temperature of the coloring turbid solution is controlled at 15 ℃, the aluminum profile is colored and hardened for four minutes, the coloring is uniform, the color deviation is avoided, the color is not easy to fade after the ceramic powder is hardened, and the brightness is high.
In the third embodiment, in the step (4), the colored turbid solution comprises nickel sulfate, stannous sulfate and sulfuric acid, the concentrations of the nickel sulfate, the stannous sulfate and the sulfuric acid are 25g/L, 4g/L and 9g/L in sequence, and the pH value of the colored turbid solution is controlled to be 1.45. The current adopts 18V alternating voltage, the temperature of the coloring turbid solution is controlled at 20 ℃, the aluminum profile is colored and hardened for five minutes, the coloring is uniform, the color deviation is avoided, the color is not easy to fade after the ceramic powder is hardened, and the brightness is high.
Preferably, in the step (4), the ceramic powder is 400 mesh or more. The activated oxide layer forms a concave hole with the dense hemp size larger than the ceramic powder size, the concave hole has an adsorption effect on coloring particles and the like through an electrode, and the coloring particles can bring a plurality of ceramic powders to accumulate in the concave hole; because the size of shrinkage pool can not be too big, otherwise can cause too big damage to the oxide layer, also can harm the inside metal of aluminium alloy, so the size of shrinkage pool generally can not be greater than 400 size, so will guarantee that ceramic powder's size is less than 400 size.
Preferably, in the step (4), the ceramic powder has a 500-1000 (specifically, 500, 600, 700, 800, 900 or 1000) mesh, so that the ceramic powder can have a better and more efficient accumulation effect in the concave hole, and the surface of the aluminum profile can have more wear resistance.
Preferably, in the step (1), the aluminum profile is placed into the caustic soda solution, the caustic soda solution is heated, the surface of the aluminum profile is scrubbed while the temperature of the caustic soda solution is kept at 35-50 (specifically, 35, 37, 40, 42, 44, 46, 48 or 50) DEG C, and then the aluminum profile is sequentially washed by deionized water and clean water. The aluminum profile surface is subjected to alkaline washing in the step, caustic soda achieves the most efficient alkaline washing effect under the temperature condition, stubborn stains such as lipid and other impurities on the aluminum profile surface can be washed away, and then the aluminum profile surface can be recovered to be neutral by deionized water and clear water.
Preferably, in the step (2), the electrolytic bath is used to contain sulfuric acid electrolyte, and the aluminum profile is placed into the sulfuric acid electrolyte with the concentration of 172-The aluminum ion concentration is 14-16 (specifically 14, 14.5, 15, 15.5 or 16) g/L, the electrolyte temperature is 18 deg.C, and the electrifying current density is 55-75 (specifically 55, 60, 65, 70 or 75) A/m2Oxidizing for 15-25min (specifically 15, 17, 20, 21, 23 or 25), and taking out the aluminum profile to clean with deionized water and clean water in sequence.
Preferably, in the step (3), an activating solution is first prepared, wherein the activating solution is hydrofluoric acid or nickel chloride acid, and the aluminum profile is placed into the activating solution, so that the oxide layer on the surface of the aluminum profile is uniformly activated to form uniformly distributed concave holes. The hydrofluoric acid and the nickel chloride acid solution can both carry out activation corrosion on the oxide layer and form a dense and hemp corrosion concave hole.
Preferably, in the step (3), the concentration of the activating solution is 0.22 to 0.35 (specifically, 0.22, 0.24, 0.25, 0.27, 0.3, 0.33, or 0.35) ml/L, and the aluminum profile is activated in the activating solution for 30 to 150 (specifically, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, or 150) s. The aluminum profile is properly activated in the activating solution under the condition, and concave holes with the size of 400-1000 meshes are formed on the surface.
Preferably, in the step (3), the concentration of the activating solution is 0.28-0.3ml/L, and the aluminum profile is activated in the activating solution for 50-100 s. Under the condition, the aluminum profile is properly activated in the activating liquid, and concave holes with the size of 600-800 meshes are formed on the surface.
Preferably, in the step (5), a cobalt salt and nickel salt hydrolysate solution is prepared and contained in an electrolytic bath, the temperature of the cobalt salt and nickel salt hydrolysate solution is kept at 75-85 (specifically 75, 77, 80, 83 or 85) DEG C, and the aluminum profile is placed in the cobalt salt hydrolysate solution and electrified for more than 1000 s. The hydrolysis salt solution of cobalt salt and nickel salt can be adsorbed by the shrinkage pool of oxide layer in the hydrolysis salt solution of electrolysis trough, and cobalt salt and nickel salt can take place to hydrolyze in the shrinkage pool and form the deposit, realize the hole sealing effect and with extrusion such as ceramic powder and carry out the part and shelter from, ceramic powder local exposes and the local is blocked, avoids ceramic powder to drop, and ceramic powder is more firm, guarantees aluminium alloy surface lasting hardness and wear resistance.
To make it practicalFurther advantageous effects are obtained when, in the step (5), the cobalt salt is CoX2，CoF2，CoCl2，CoBr2，CoI2，CoOCo(OH)2，CoCO3，Co(NO3)2And CoSO4At least one of; the nickel salt is at least one of nickel sulfate, nickel chloride, nickel fluoride and nickel acetate.
In order to achieve further superior effects, it is preferable that in the step (5), the hydrolyzed salt solution includes CoSO in a weight ratio of 1-2:1-24·7H2O and NiSO4·7H2O。
Preferably, the hardening treatment may also be performed during the hole sealing process, specifically in the step (5), according to the following steps:
s1, preparing a cobalt salt and nickel salt hydrolysis salt solution and putting the cobalt salt and nickel salt hydrolysis salt solution into an electrolytic cell, grinding ceramic into ceramic powder, adding the ceramic powder into the hydrolysis salt solution, and uniformly stirring to prepare a turbid hydrolysis solution; keeping the temperature of the turbid hydrolysis solution at 75-85 ℃, and placing the aluminum profile into the turbid hydrolysis solution for more than 1000 s;
s2, placing the aluminum profile into the hydrolysis turbid solution of the electrolytic cell, and adding current for treatment. Because the shrinkage pool department of aluminium alloy is more close to the inside metal of aluminium alloy or the inside metal of direct exposed aluminium alloy, the electric current is more concentrated, can adsorb cobalt salt and nickel salt particle (or cobalt salt and nickel salt ion), the ceramic powder in the flow of cobalt salt and nickel salt particle can drive the solution together accumulates in the shrinkage pool, ceramic powder can show hardness and the wear resistance etc. that improves the aluminium alloy oxide layer, it is not fragile to ensure the aluminium alloy oxide layer, carry out lasting effectual protection to the inside metal of aluminium alloy, show the life who prolongs the aluminium alloy.
Due to the fact that the electrodes are in a certain size, after the electrodes are electrified, the ion concentration in the electrolyte and the flow rate of the electrolyte are different, so that the difference between the ion concentration around the aluminum profile and the flow rate of the electrolyte can affect the uniformity of anodic oxidation, activation, coloring and hole sealing of the aluminum profile, and therefore the aluminum profile is preferably in a constant-speed rotating state in the steps (2), (3), (4) or (5). The aluminum profile rotating device can drive an aluminum profile to rotate through a rotating driving device, wherein the rotating driving device comprises a clamping component for clamping the aluminum profile, a motor for driving the clamping component to rotate and a metal elastic sheet which is in electric contact with the clamping component; the clamping part is provided with a metal disc which is in electric contact with the metal elastic sheet, and the metal elastic sheet is in contact with the power supply.
The product form of the present invention is not limited to the embodiments, and any suitable changes or modifications of the similar ideas by anyone should be considered as not departing from the patent scope of the present invention.
Claims (11)
1. The preparation process of the anodic aluminum oxide profile is characterized by comprising the following steps of:
(1) cleaning and drying the aluminum profile;
(2) placing the aluminum profile into electrolyte for anodic oxidation treatment, and generating an oxide layer on the surface of the aluminum profile;
(3) placing the aluminum profile into activating liquid for activating treatment, so that an oxide layer forms a concave hole, and the metal in the aluminum profile is directly exposed;
(4) carrying out anode coloring treatment on the aluminum profile;
(5) hole sealing treatment is carried out on the aluminum profile;
in the step (4), the oxide layer is hardened while electrolytic coloring is performed; the method comprises the following steps:
s1, grinding the ceramic into ceramic powder, preparing an electrolytic coloring solution, adding the ceramic powder into the electrolytic coloring solution, and uniformly stirring to prepare a colored turbid solution;
s2, placing the aluminum profile into the colored turbid solution, and adding current for treatment;
in the step (4), the coloring turbid solution comprises nickel sulfate, stannous sulfate and sulfuric acid, the concentrations of the nickel sulfate, the stannous sulfate and the sulfuric acid are 24-26g/L, 3-5g/L and 8-10g/L in sequence, and the pH value of the coloring turbid solution is controlled to be 1.4-1.5;
in the step (5), preparing a cobalt salt and nickel salt hydrolysis salt solution, keeping the temperature of the hydrolysis salt solution at 75-85 ℃, putting the aluminum profile into the hydrolysis salt solution, and electrifying for more than 1000 s;
in the step (5), the following steps are performed:
s1, preparing a cobalt salt and nickel salt hydrolysis salt solution, grinding the ceramic into ceramic powder, adding the ceramic powder into the hydrolysis salt solution, and uniformly stirring to prepare a hydrolysis turbid solution; keeping the temperature of the turbid hydrolysis solution at 75-85 ℃, and placing the aluminum profile into the turbid hydrolysis solution for more than 1000 s;
and S2, placing the aluminum profile into the hydrolysis turbid solution, and adding current for treatment.
2. The anodic aluminum oxide profile and the preparation process thereof according to claim 1, wherein the anodic aluminum oxide profile comprises the following steps: in the step (4), the current adopts 15-20V alternating voltage, the temperature of the coloring turbid solution is controlled at 15-25 ℃, and the aluminum profile is colored and hardened for more than three minutes.
3. The anodic aluminum oxide profile and the preparation process thereof according to claim 2, wherein: in the step (4), the ceramic powder has a mesh size of 400 mesh or more.
4. The anodic aluminum oxide profile and the preparation process thereof according to claim 3, wherein the anodic aluminum oxide profile comprises the following steps: in the step (4), the ceramic powder is 500-1000 mesh.
5. The anodic aluminum oxide profile and the preparation process thereof according to claim 1, wherein the anodic aluminum oxide profile comprises the following steps: in the step (1), the aluminum profile is placed into the caustic soda solution, the caustic soda solution is heated, when the temperature of the caustic soda solution is kept between 35 ℃ and 50 ℃, the surface of the aluminum profile is scrubbed, and then the aluminum profile is sequentially cleaned by deionized water and clear water.
6. The anodic aluminum oxide profile and the preparation process thereof according to claim 1, wherein the anodic aluminum oxide profile comprises the following steps: in the step (2), the aluminum profile is placed into sulfuric acid electrolyte with the concentration of 172-178g/L, the concentration of aluminum ions in the electrolyte is 14-16g/L, the temperature of the electrolyte is 18 ℃, and the electrified current density is55-75A/m2And oxidizing for 15-25min, and then taking out the aluminum profile to be sequentially cleaned by deionized water and clear water.
7. The anodic aluminum oxide profile and the preparation process thereof according to claim 1, wherein the anodic aluminum oxide profile comprises the following steps: in the step (3), firstly, an activating solution is prepared, wherein the activating solution is hydrofluoric acid or nickel chloride acid solution, and the aluminum profile is placed into the activating solution, so that an oxide layer on the surface of the aluminum profile is uniformly activated to form uniformly distributed concave holes.
8. The anodic aluminum oxide profile and the preparation process thereof according to claim 7 are characterized in that: in the step (3), the concentration of the activating solution is 0.22-0.35mL/L, and the aluminum profile is activated in the activating solution for 30-150 s.
9. The anodic aluminum oxide profile and the preparation process thereof according to claim 8, wherein: in the step (3), the concentration of the activating solution is 0.28-0.3mL/L, and the aluminum profile is activated in the activating solution for 50-100 s.
10. The anodic aluminum oxide profile and the preparation process thereof according to claim 1, wherein the anodic aluminum oxide profile comprises the following steps: in the step (5), the cobalt salt is CoX2，CoF2，CoCl2，CoBr2，CoI2，CoOCo(OH)2，CoCO3，Co(NO3)2And CoSO4At least one of; the nickel salt is at least one of nickel sulfate, nickel chloride, nickel fluoride and nickel acetate.
11. The anodic aluminum oxide profile and the preparation process thereof according to claim 1, wherein the anodic aluminum oxide profile comprises the following steps: in the step (5), the hydrolyzed salt solution comprises CoSO in a weight ratio of 1-2:1-24·7H2O and NiSO4·7H2O。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795299.7A CN110527880B (en) | 2019-08-27 | 2019-08-27 | Anodic aluminum oxide profile and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795299.7A CN110527880B (en) | 2019-08-27 | 2019-08-27 | Anodic aluminum oxide profile and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110527880A CN110527880A (en) | 2019-12-03 |
| CN110527880B true CN110527880B (en) | 2020-10-16 |
Family
ID=68664490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910795299.7A Active CN110527880B (en) | 2019-08-27 | 2019-08-27 | Anodic aluminum oxide profile and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110527880B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4128460A (en) * | 1976-09-13 | 1978-12-05 | Daiwa Kasei Kenkyujo Kabushiki Kaisha | Coloring by electrolysis of aluminum or aluminum alloys |
| CN101845654A (en) * | 2009-03-23 | 2010-09-29 | 浙江帝龙新材料股份有限公司 | Aluminum strip anode oxidization process |
| CN102154676A (en) * | 2011-04-14 | 2011-08-17 | 华侨大学 | Method for electrodepositing and strengthening low-melting-point metal spray mould |
| CN103361700A (en) * | 2013-07-24 | 2013-10-23 | 佛山市三水凤铝铝业有限公司 | Electrolytic coloring method for aluminum sections |
| CN108642350A (en) * | 2018-06-29 | 2018-10-12 | 湖州市漾西电化有限公司 | A kind of anticorrosion aluminium ally section and its surface treatment method |
| CN109056027A (en) * | 2018-09-30 | 2018-12-21 | 佛山市海化表面处理科技有限公司 | A kind of oxidation aluminium film mantoquita electrolytic coloring production technology |
-
2019
- 2019-08-27 CN CN201910795299.7A patent/CN110527880B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4128460A (en) * | 1976-09-13 | 1978-12-05 | Daiwa Kasei Kenkyujo Kabushiki Kaisha | Coloring by electrolysis of aluminum or aluminum alloys |
| CN101845654A (en) * | 2009-03-23 | 2010-09-29 | 浙江帝龙新材料股份有限公司 | Aluminum strip anode oxidization process |
| CN102154676A (en) * | 2011-04-14 | 2011-08-17 | 华侨大学 | Method for electrodepositing and strengthening low-melting-point metal spray mould |
| CN103361700A (en) * | 2013-07-24 | 2013-10-23 | 佛山市三水凤铝铝业有限公司 | Electrolytic coloring method for aluminum sections |
| CN108642350A (en) * | 2018-06-29 | 2018-10-12 | 湖州市漾西电化有限公司 | A kind of anticorrosion aluminium ally section and its surface treatment method |
| CN109056027A (en) * | 2018-09-30 | 2018-12-21 | 佛山市海化表面处理科技有限公司 | A kind of oxidation aluminium film mantoquita electrolytic coloring production technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110527880A (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105364637B (en) | A kind of surface treatment method of Al-alloy casing | |
| CN104562136A (en) | Frosting process for aluminum profile | |
| CN103938251B (en) | Aluminum alloy hub surface anodic oxidation treatment process | |
| CN110607549A (en) | Anti-static hard anodic oxidation process | |
| CN105239129B (en) | Surface treatment method of aluminum alloy product | |
| CN110438545A (en) | A kind of process of surface treatment of resistance electrophoretic aluminium section | |
| CN112663107A (en) | Matte-surface black high-corrosion-resistance aluminum alloy surface treatment method | |
| CN105908239A (en) | Processing method capable of improving surface strength of aluminum and aluminum alloy | |
| CN110527880B (en) | Anodic aluminum oxide profile and preparation process thereof | |
| CN109513587A (en) | A kind of zero-fault zero diopter Electrostatic Spraying of powder Coatings coating method | |
| CN110195249A (en) | A kind of anodic oxidation preparation method of antibacterial, colored aluminum or aluminum alloy | |
| EP3117028B1 (en) | Plant and process for the anodizing treatment of products made of aluminium or its alloys | |
| CN109913925A (en) | A kind of aluminium shape surface brightening method | |
| CN112725865A (en) | Surface treatment process of high-strength corrosion-resistant aluminum alloy for wheelchair processing | |
| CN110512256B (en) | Preparation process of corrosion-resistant photovoltaic support | |
| KR101545858B1 (en) | Manufacturing method of metaloxide/coating compositions of alumium heat exchanger for home appliance | |
| CN106392483B (en) | A kind of manufacturing process and system of compound titanium plate | |
| CN108707945A (en) | A kind of aluminium flake secondary oxidation manufacturing process that surface print is color | |
| CN112210808A (en) | Preparation method of black film | |
| CN108004556B (en) | Method for deashing surface of coating of silicon-aluminum composite material | |
| CN110318084B (en) | Implementation method for reducing black line material lines after anodic oxidation of aviation aluminum parts | |
| CN112342587A (en) | Aluminum plate anodic oxidation method | |
| CN103173644B (en) | Super-hydrophobic porous aluminum alloy material and preparation method thereof | |
| CN102254637A (en) | Process for anodic oxidation auxiliary low-voltage insulation treatment of copper clad aluminium wire | |
| CN111155156A (en) | Surface treatment process for aluminum profile |
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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Guanshan Industrial Park, Wu'an Town, Changtai County, Zhangzhou City, Fujian Province Patentee after: FUJIAN ANTAI NEW ENERGY TECH. Corp. Address before: Guanshan Industrial Park, Wu'an Town, Changtai County, Zhangzhou City, Fujian Province Patentee before: FUJIAN ZHANGZHOU ANTAI ALUMINIUM Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An anodic aluminum oxide profile and its preparation process Effective date of registration: 20230203 Granted publication date: 20201016 Pledgee: China Construction Bank Co.,Ltd. Changtai Branch Pledgor: FUJIAN ANTAI NEW ENERGY TECH. Corp. Registration number: Y2023350000033 |