CN115404483A - Surface treatment process of aluminum alloy section - Google Patents
Surface treatment process of aluminum alloy section Download PDFInfo
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- CN115404483A CN115404483A CN202210981575.0A CN202210981575A CN115404483A CN 115404483 A CN115404483 A CN 115404483A CN 202210981575 A CN202210981575 A CN 202210981575A CN 115404483 A CN115404483 A CN 115404483A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/36—Alkaline compositions for etching aluminium or alloys thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/02—Local etching
Abstract
The invention relates to the field of aluminum alloy, in particular to a surface treatment process of an aluminum alloy section, which comprises the following steps: s1, sealing treatment: adhering a resin material resistant to acid and alkali corrosion to the end part of the aluminum alloy section bar, so that the resin material completely covers the end face of the aluminum alloy section bar, and then curing the resin material to realize the end face sealing of the aluminum alloy section bar; s2, soaking and cleaning: placing the aluminum alloy section in a weak alkaline solution pool for soaking, and then cleaning the soaked aluminum alloy section by using ultrasonic waves to remove stains on the surface of the aluminum alloy section. In the using process, after the aluminum alloy section is corroded and the corrosion groove is formed on the surface of the aluminum alloy section, the cobalt powder and the zirconium powder are mixed and coated on the surface of the aluminum alloy section and in the corrosion groove, and the mixture is melted, penetrated and covered on the surface of the aluminum alloy section through laser scanning, so that the wear resistance and the corrosion resistance of the aluminum alloy section are effectively improved, and the service life of the aluminum alloy section is prolonged.
Description
Technical Field
The invention relates to the technical field of aluminum alloy correlation, in particular to a surface treatment process of an aluminum alloy profile.
Background
Aluminum alloy sections are the most widely used non-ferrous metal structural materials in industry. In actual use, aluminum alloy has the defects of poor corrosion resistance and poor wear resistance, and is extremely easy to be corroded and damaged in environments with much dust or high humidity, particularly in the building industry, the existing aluminum alloy surface hardening treatment method mainly adopts chemical oxidation, but an oxide film formed by the chemical oxidation has low hardness and is not wear-resistant, and is easy to wear and fall off after being used for a period of time.
Disclosure of Invention
The invention aims to provide a surface treatment process of an aluminum alloy section, which aims to solve the technical problems that the existing aluminum alloy surface hardening treatment method proposed in the prior art mainly adopts chemical oxidation, but an oxidation film formed by the chemical oxidation has low hardness and is not wear-resistant and is easy to wear and fall off after being used for a period of time, and in some prior arts, a metal film is directly plated on the aluminum alloy surface.
In order to solve the technical problems, the invention adopts the following technical scheme: a surface treatment process of an aluminum alloy profile comprises the following steps:
s1, sealing treatment: adhering resin materials resistant to acid and alkali corrosion to the end part of the aluminum alloy section bar, so that the resin materials completely cover the end face of the aluminum alloy section bar, and then curing the resin materials to realize the end face sealing of the aluminum alloy section bar;
s2, soaking and cleaning: placing the aluminum alloy section in a weak alkaline solution pool for soaking, and then cleaning the soaked aluminum alloy section by using ultrasonic waves to remove stains on the surface of the aluminum alloy section;
s3, flushing with running water: taking out the aluminum alloy section cleaned by the alkalescent solution, spraying deionized water by a high-pressure water gun to clean the aluminum alloy section, removing the alkaline solution attached to the surface of the aluminum alloy, and drying the cleaned aluminum alloy section;
s4, corrosion treatment: adding a sodium hydroxide solution into the soaking pool, then adding an alkaline etching agent into the soaking pool, soaking the aluminum alloy section with two sealed ends into the soaking pool, and performing soaking corrosion to enable the surface of the aluminum alloy section to form a corrosion groove;
s5, secondary flushing: taking out the corroded aluminum alloy section, washing the surface of the aluminum alloy section by using deionized water, washing the corrosive liquid attached to the surface of the aluminum alloy section completely, and drying the aluminum alloy section;
s6, laser scanning: mixing a certain amount of cobalt powder and zirconium powder, coating the mixture on the surface of an aluminum alloy section, enabling part of the powder to be positioned in a corrosion tank, melting the coating through laser scanning, and penetrating the coating into the corrosion tank to form a metal film on the surface of the aluminum alloy section;
s7, stripping: after the metal film is fixed and formed, heating the resin materials at the two ends of the aluminum alloy section to separate the resin materials from the two ends of the aluminum alloy section;
s8, spray painting and curing: spraying a protective paint film on the surface of the metal film, and then drying and curing the protective paint film;
the sealing treatment in the step S1 specifically includes the following steps:
s101: marking the parts, close to the two ends, of the aluminum alloy section;
s102: melting the resin material, and then coating the resin material on the two ends of the aluminum alloy section;
s103: cooling and solidifying the two ends of the aluminum alloy section coated with the resin material;
s104: placing the solidified aluminum alloy section into a water pool filled with water, enabling the water in the water pool to overflow the aluminum alloy section, and observing whether bubbles emerge from the two ends of the aluminum alloy section;
s105: if no bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section to finish sealing treatment;
s106: if bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section, and repeating S102;
wherein, the corrosion treatment in S4 specifically comprises the following steps:
s401: adding a sodium hydroxide solution into the soaking pool, and simultaneously adding an alkali corrosion agent, wherein the ratio of the sodium hydroxide solution to the alkali corrosion agent is 1:1, stirring simultaneously to promote the solution to be uniformly mixed;
s402: putting the aluminum alloy section into a soaking pool, and enabling a corrosive solution in the soaking pool to overflow the aluminum alloy section, soaking and corroding for 10-16 minutes;
s403: taking out the aluminum alloy after soaking corrosion, then shooting a surface corrosion groove by using a CCD camera and detecting whether the depth of the corrosion groove reaches the standard or not;
s404: if the corrosion tank in the S403 reaches the standard, the corrosion treatment is qualified, and the corrosion treatment is finished;
s405: and if the corrosion tank in the step S403 does not reach the standard, the corrosion treatment is unqualified, the aluminum alloy section is placed into the soaking pool to be continuously corroded for 3-5 minutes, and then the step S403 is repeated.
As further preferable in the present technical solution: in S1, the resin material is any one of epoxy resin, bisphenol A unsaturated polyester resin and xylene resin.
As further preferable in the present technical solution: in the S2, the temperature in the weak alkaline solution tank is 50-55 ℃, and the soaking time is 8-10 minutes.
As further preferable in the present technical solution: in S4, when the soaking corrosion is carried out, the temperature in the soaking pool is 35-40 ℃.
As further preferable in the present technical solution: in S403, after soaking and corroding, the depth of the corrosion groove is 0.8-1.2mm.
As further preferable in the present technical solution: in S6, the proportion of cobalt powder to zirconium powder is 1-3:1.5-4.
As a further preferred aspect of the present invention: in S7, when the resin material is peeled off, the organic solvent may be sprayed onto the resin material while heating the resin material, thereby promoting dissolution of the resin material and separation from the aluminum alloy profile.
The invention has the beneficial effects that:
1. according to the invention, the surface of the aluminum alloy section is corroded to form a corrosion groove, then the metal powder is covered on the surface of the aluminum alloy section and embedded into the corrosion groove, then the coating is melted and permeated into the corrosion groove through laser scanning, and a layer of metal film is formed on the surface of the aluminum alloy section.
2. According to the invention, the end part of the aluminum alloy section is sealed before the aluminum alloy section is corroded, so that the end part of the aluminum alloy section can be prevented from being corroded, and meanwhile, the phenomenon that the end part of the aluminum alloy section is welded unstably and the welding quality is poor in the later use process due to the fact that the end part of the aluminum alloy section is covered by the metal film can be avoided.
Drawings
FIG. 1 is a flow chart of a surface treatment process of an aluminum alloy profile according to the present invention;
FIG. 2 is a flow chart of a sealing treatment in the surface treatment process of an aluminum alloy profile provided by the invention;
FIG. 3 is a flow chart of the corrosion treatment in the surface treatment process of the aluminum alloy section according to the present invention.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easily understood, the invention is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.
Specific embodiments of the present invention are described below with reference to the accompanying drawings.
Example 1
A surface treatment process of an aluminum alloy profile comprises the following steps:
s1, sealing treatment: adhering acid-base corrosion-resistant epoxy resin to the end part of the aluminum alloy section bar, so that the epoxy resin completely covers the end face of the aluminum alloy section bar, and then curing the epoxy resin to realize the end face sealing of the aluminum alloy section bar;
the sealing treatment in the step S1 specifically includes the following steps:
s101: marking the parts, close to the two ends, of the aluminum alloy section;
s102: melting the epoxy resin, and then coating the epoxy resin on two ends of the aluminum alloy section;
s103: cooling and solidifying two ends of the aluminum alloy section coated with the epoxy resin;
s104: placing the solidified aluminum alloy section into a water pool filled with water, enabling the water in the water pool to overflow the aluminum alloy section, and observing whether bubbles emerge from the two ends of the aluminum alloy section;
s105: if no bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section to finish sealing treatment;
s106: if bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section, and repeating S102;
s2, soaking and cleaning: placing the aluminum alloy section in a weak alkaline solution pool for soaking, and then cleaning the soaked aluminum alloy section by using ultrasonic waves to remove stains on the surface of the aluminum alloy section, wherein the temperature in the weak alkaline solution pool is 50-55 ℃, and the soaking time is 8-10 minutes;
s3, flushing with running water: taking out the aluminum alloy section cleaned by the alkalescent solution, spraying deionized water by a high-pressure water gun to clean the aluminum alloy section, removing the alkaline solution attached to the surface of the aluminum alloy, and drying the cleaned aluminum alloy section;
s4, corrosion treatment: adding a sodium hydroxide solution into a soaking pool, then adding an alkaline etching agent into the soaking pool, soaking the aluminum alloy section with two sealed ends into the soaking pool, and corroding to enable the surface of the aluminum alloy section to form a corrosion groove, wherein the temperature in the soaking pool is 35-40 ℃;
wherein, the corrosion treatment in S4 specifically comprises the following steps:
s401: adding a sodium hydroxide solution into the soaking pool, and simultaneously adding an alkali corrosion agent, wherein the ratio of the sodium hydroxide solution to the alkali corrosion agent is 1:1, stirring and promoting the solution to be uniformly mixed;
s402: putting the aluminum alloy section into a soaking pool, and enabling a corrosive solution in the soaking pool to overflow the aluminum alloy section, soaking and corroding for 10-16 minutes;
s403: taking out the aluminum alloy after soaking corrosion, then shooting a surface corrosion groove by using a CCD camera and detecting whether the depth of the corrosion groove is within the range of 0.8-1.2 mm;
s404: if the corrosion tank in the S403 reaches the standard, the corrosion treatment is qualified, and the corrosion treatment is finished;
s405: if the corrosion tank in the step S403 does not reach the standard, the corrosion treatment is unqualified, the aluminum alloy section is placed into a soaking pool to be continuously corroded for 3-5 minutes, and then the step S403 is repeated;
s5, secondary flushing: taking out the corroded aluminum alloy section, washing the surface of the aluminum alloy section by using deionized water, washing the corrosive liquid attached to the surface of the aluminum alloy section completely, and drying the aluminum alloy section;
s6, laser scanning: mixing a certain amount of cobalt powder and zirconium powder, coating the mixture on the surface of an aluminum alloy profile, enabling part of the powder to be located inside a corrosion tank, melting a coating through laser scanning, penetrating the coating into the corrosion tank, and forming a layer of metal film on the surface of the aluminum alloy profile, wherein the ratio of the cobalt powder to the zirconium powder is 1:1.5;
s7, stripping: after the metal film is fixedly formed, heating resin materials at two ends of the aluminum alloy section to separate the resin materials from the two ends of the aluminum alloy section, wherein when the resin materials are stripped, an organic solvent can be sprayed on the resin materials in a matched manner when the resin materials are heated, so that the resin materials are dissolved and separated from the aluminum alloy section;
s8, spray painting and curing: and spraying a protective paint film on the surface of the metal film, and then drying and curing the protective paint film.
Example 2
S1, sealing treatment: adhering acid-base corrosion resistant bisphenol A unsaturated polyester resin to the end part of the aluminum alloy section bar, so that the bisphenol A unsaturated polyester resin completely covers the end face of the aluminum alloy section bar, and then curing the bisphenol A unsaturated polyester resin to realize the end face sealing of the aluminum alloy section bar;
the sealing treatment in the step S1 specifically includes the following steps:
s101: marking the parts, close to the two ends, of the aluminum alloy section;
s102: melting the bisphenol A unsaturated polyester resin, and coating the bisphenol A unsaturated polyester resin on two ends of the aluminum alloy section;
s103: cooling and solidifying two ends of the aluminum alloy section coated with the bisphenol A unsaturated polyester resin;
s104: placing the solidified aluminum alloy section into a water pool filled with water, enabling the water in the water pool to overflow the aluminum alloy section, and observing whether bubbles emerge from the two ends of the aluminum alloy section;
s105: if no bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section to finish sealing treatment;
s106: if bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section, and repeating S102;
s2, soaking and cleaning: placing the aluminum alloy section in a weak alkaline solution pool for soaking, and then cleaning the soaked aluminum alloy section by using ultrasonic waves to remove stains on the surface of the aluminum alloy section, wherein the temperature in the weak alkaline solution pool is 50-55 ℃, and the soaking time is 8-10 minutes;
s3, flushing with running water: taking out the aluminum alloy section cleaned by the alkalescent solution, spraying deionized water by a high-pressure water gun to clean the aluminum alloy section, removing the alkaline solution attached to the surface of the aluminum alloy, and drying the cleaned aluminum alloy section;
s4, corrosion treatment: adding a sodium hydroxide solution into a soaking pool, then adding an alkaline etching agent into the soaking pool, soaking the aluminum alloy section with two sealed ends into the soaking pool, and corroding to enable the surface of the aluminum alloy section to form a corrosion groove, wherein the temperature in the soaking pool is 35-40 ℃;
wherein, the corrosion treatment in S4 specifically comprises the following steps:
s401: adding a sodium hydroxide solution into the soaking pool, and simultaneously adding an alkali corrosion agent, wherein the ratio of the sodium hydroxide solution to the alkali corrosion agent is 1:1, stirring and promoting the solution to be uniformly mixed;
s402: putting the aluminum alloy section into a soaking pool, and enabling a corrosive solution in the soaking pool to overflow the aluminum alloy section, soaking and corroding for 10-16 minutes;
s403: taking out the aluminum alloy after soaking corrosion, then shooting a surface corrosion groove by using a CCD camera and detecting whether the depth of the corrosion groove is within the range of 0.8-1.2 mm;
s404: if the corrosion tank in the S403 reaches the standard, the corrosion treatment is qualified, and the corrosion treatment is finished;
s405: if the corrosion tank in the step S403 does not reach the standard, the corrosion treatment is unqualified, the aluminum alloy section is placed into a soaking pool to be continuously corroded for 3-5 minutes, and then the step S403 is repeated;
s5, secondary flushing: taking out the corroded aluminum alloy section, washing the surface of the aluminum alloy section by using deionized water, washing the corrosive liquid attached to the surface of the aluminum alloy section completely, and drying the aluminum alloy section;
s6, laser scanning: mixing a certain amount of cobalt powder and zirconium powder, coating the mixture on the surface of an aluminum alloy profile, enabling part of the powder to be located inside a corrosion tank, melting a coating through laser scanning, penetrating the coating into the corrosion tank, and forming a layer of metal film on the surface of the aluminum alloy profile, wherein the ratio of the cobalt powder to the zirconium powder is 3:4;
s7, stripping: after the metal film is fixedly formed, heating resin materials at two ends of the aluminum alloy section to separate the resin materials from the two ends of the aluminum alloy section, wherein when the resin materials are stripped, an organic solvent can be sprayed on the resin materials in a matched manner when the resin materials are heated, so that the resin materials are dissolved and separated from the aluminum alloy section;
s8, spray painting and curing: and spraying a protective paint film on the surface of the metal film, and then drying and curing the protective paint film.
Example 3
S1, sealing treatment: adhering acid-base corrosion-resistant xylene resin to the end part of the aluminum alloy section bar to enable the xylene resin to completely cover the end face of the aluminum alloy section bar, and then solidifying the xylene resin to realize the end face sealing of the aluminum alloy section bar;
the sealing treatment in the step S1 specifically includes the following steps:
s101: marking the parts, close to the two ends, of the aluminum alloy section;
s102: melting the xylene resin, and then coating the xylene resin on two ends of the aluminum alloy section;
s103: cooling and solidifying two ends of the aluminum alloy section coated with the xylene resin;
s104: placing the solidified aluminum alloy section into a water pool filled with water, enabling the water in the water pool to overflow the aluminum alloy section, and observing whether bubbles emerge from the two ends of the aluminum alloy section;
s105: if no bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section to finish sealing treatment;
s106: if bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section, and repeating S102;
s2, soaking and cleaning: placing the aluminum alloy section in a weak alkaline solution pool for soaking, and then cleaning the soaked aluminum alloy section by using ultrasonic waves to remove stains on the surface of the aluminum alloy section, wherein the temperature in the weak alkaline solution pool is 50-55 ℃, and the soaking time is 8-10 minutes;
s3, flushing with running water: taking out the aluminum alloy section cleaned by the alkalescent solution, spraying deionized water by a high-pressure water gun to clean the aluminum alloy section, removing the alkaline solution attached to the surface of the aluminum alloy, and drying the cleaned aluminum alloy section;
s4, corrosion treatment: adding a sodium hydroxide solution into a soaking pool, then adding an alkaline etching agent into the soaking pool, soaking the aluminum alloy section with two sealed ends into the soaking pool, and corroding to enable the surface of the aluminum alloy section to form a corrosion groove, wherein the temperature in the soaking pool is 35-40 ℃;
wherein, the corrosion treatment in S4 specifically comprises the following steps:
s401: adding a sodium hydroxide solution into the soaking pool, and simultaneously adding an alkali corrosion agent, wherein the ratio of the sodium hydroxide solution to the alkali corrosion agent is 1:1, stirring and promoting the solution to be uniformly mixed;
s402: placing the aluminum alloy section into a soaking pool, enabling a corrosive solution in the soaking pool to permeate the aluminum alloy section, and soaking and corroding for 10-16 minutes;
s403: taking out the aluminum alloy after soaking corrosion, then shooting a surface corrosion groove by using a CCD camera and detecting whether the depth of the corrosion groove is within the range of 0.8-1.2 mm;
s404: if the corrosion tank in the S403 reaches the standard, the corrosion treatment is qualified, and the corrosion treatment is finished;
s405: if the corrosion tank in the step S403 does not reach the standard, the corrosion treatment is unqualified, the aluminum alloy section is placed into a soaking pool to be continuously corroded for 3-5 minutes, and then the step S403 is repeated;
s5, secondary flushing: taking out the corroded aluminum alloy section, washing the surface of the aluminum alloy section by using deionized water, washing the corrosive liquid attached to the surface of the aluminum alloy section completely, and drying the aluminum alloy section;
s6, laser scanning: mixing a certain amount of cobalt powder and zirconium powder, coating the mixture on the surface of an aluminum alloy profile, enabling part of the powder to be located inside a corrosion tank, melting a coating through laser scanning, penetrating the coating into the corrosion tank, and forming a layer of metal film on the surface of the aluminum alloy profile, wherein the ratio of the cobalt powder to the zirconium powder is 2:3;
s7, stripping: after the metal film is fixedly formed, heating resin materials at two ends of the aluminum alloy section to separate the resin materials from the two ends of the aluminum alloy section, wherein when the resin materials are stripped, an organic solvent can be sprayed on the resin materials in a matched manner when the resin materials are heated, so that the resin materials are dissolved and separated from the aluminum alloy section;
s8, spray painting and curing: and spraying a protective paint film on the surface of the metal film, and then drying and curing the protective paint film.
According to the invention, the surface of the aluminum alloy section is corroded to form a corrosion groove, then metal powder is covered on the surface of the aluminum alloy section and embedded into the corrosion groove, then the coating is melted and permeated into the corrosion groove through laser scanning, a layer of metal film is formed on the surface of the aluminum alloy section, the wear resistance and the corrosion resistance of the aluminum alloy section are improved by utilizing the characteristics of metal cobalt and metal zirconium, and meanwhile, the metal film is covered on the surface of the aluminum alloy and is also embedded into the corrosion groove, so that the adhesion strength of the metal film can be ensured; and through carrying out sealing treatment with its tip before corroding the aluminum alloy ex-trusions, can avoid the tip of aluminum alloy ex-trusions to be corroded, can avoid appearing simultaneously because of the tip that the metal film covers at the aluminum alloy ex-trusions to lead to the aluminum alloy ex-trusions tip welding insecure in the later stage use, welding quality poor phenomenon has also promoted the life of aluminum alloy ex-trusions, has reduced the possibility of aluminum alloy product damage.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The surface treatment process of the aluminum alloy profile is characterized by comprising the following steps of:
s1, sealing treatment: adhering a resin material resistant to acid and alkali corrosion to the end part of the aluminum alloy section bar, so that the resin material completely covers the end face of the aluminum alloy section bar, and then curing the resin material to realize the end face sealing of the aluminum alloy section bar;
s2, soaking and cleaning: placing the aluminum alloy section in a weak alkaline solution pool for soaking, and then cleaning the soaked aluminum alloy section by using ultrasonic waves to remove stains on the surface of the aluminum alloy section;
s3, flushing with running water: taking out the aluminum alloy section cleaned by the alkalescent solution, spraying deionized water by a high-pressure water gun to clean the aluminum alloy section, removing the alkaline solution attached to the surface of the aluminum alloy, and drying the cleaned aluminum alloy section;
s4, corrosion treatment: adding a sodium hydroxide solution into the soaking pool, then adding an alkaline etching agent into the soaking pool, soaking the aluminum alloy section with two sealed ends into the soaking pool, and performing soaking corrosion to enable the surface of the aluminum alloy section to form a corrosion groove;
s5, secondary flushing: taking out the corroded aluminum alloy section, washing the surface of the aluminum alloy section by using deionized water, washing the corrosive liquid attached to the surface of the aluminum alloy section completely, and drying the aluminum alloy section;
s6, laser scanning: mixing a certain amount of cobalt powder and zirconium powder, coating the mixture on the surface of an aluminum alloy section, enabling part of the powder to be positioned in a corrosion tank, melting the coating through laser scanning, and penetrating the coating into the corrosion tank to form a metal film on the surface of the aluminum alloy section;
s7, stripping: after the metal film is fixed and formed, heating the resin materials at the two ends of the aluminum alloy section to separate the resin materials from the two ends of the aluminum alloy section;
s8, spray painting and curing: spraying a protective paint film on the surface of the metal film, and then drying and curing the protective paint film;
the sealing treatment in the step S1 specifically includes the following steps:
s101: marking the parts, close to the two ends, of the aluminum alloy section;
s102: melting the resin material, and then coating the resin material on the two ends of the aluminum alloy section;
s103: cooling and solidifying the two ends of the aluminum alloy section coated with the resin material;
s104: placing the solidified aluminum alloy section into a water pool filled with water, enabling the water in the water pool to overflow the aluminum alloy section, and observing whether bubbles emerge from the two ends of the aluminum alloy section;
s105: if no bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section to finish sealing treatment;
s106: if bubbles emerge from the two ends of the aluminum alloy section in S104, taking out the aluminum alloy section, and repeating S102;
wherein, the corrosion treatment in S4 specifically comprises the following steps:
s401: adding a sodium hydroxide solution into the soaking pool, and simultaneously adding an alkali corrosion agent, wherein the ratio of the sodium hydroxide solution to the alkali corrosion agent is 1:1, stirring and promoting the solution to be uniformly mixed;
s402: putting the aluminum alloy section into a soaking pool, and enabling a corrosive solution in the soaking pool to overflow the aluminum alloy section, soaking and corroding for 10-16 minutes;
s403: taking out the aluminum alloy after soaking corrosion, then shooting a surface corrosion groove by using a CCD camera and detecting whether the depth of the corrosion groove reaches the standard or not;
s404: if the corrosion tank in the S403 reaches the standard, the corrosion treatment is qualified, and the corrosion treatment is finished;
s405: and if the corrosion tank in the step S403 does not reach the standard, performing unqualified corrosion treatment, placing the aluminum alloy section into a soaking pool, continuously corroding for 3-5 minutes, and then repeating the step S403.
2. The surface treatment process of an aluminum alloy profile according to claim 1, characterized in that: in the S1, the resin material is any one of epoxy resin, bisphenol A unsaturated polyester resin and xylene resin.
3. The surface treatment process of an aluminum alloy profile according to claim 1, characterized in that: in the S2, the temperature in the weak alkaline solution tank is 50-55 ℃, and the soaking time is 8-10 minutes.
4. The surface treatment process of an aluminum alloy profile according to claim 1, characterized in that: in S4, when the soaking corrosion is carried out, the temperature in the soaking pool is 35-40 ℃.
5. The surface treatment process of an aluminum alloy profile according to claim 4, characterized in that: in S403, after soaking and corroding, the depth of the corrosion groove is 0.8-1.2mm.
6. The surface treatment process of an aluminum alloy profile according to claim 1, characterized in that: in S6, the ratio of cobalt powder to zirconium powder is 1-3:1.5-4.
7. The surface treatment process of an aluminum alloy profile according to claim 1, characterized in that: in S7, when the resin material is peeled off, the organic solvent may be sprayed onto the resin material while heating the resin material, thereby promoting dissolution of the resin material and separation from the aluminum alloy profile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210981575.0A CN115404483B (en) | 2022-08-16 | 2022-08-16 | Surface treatment process of aluminum alloy profile |
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| CN202210981575.0A CN115404483B (en) | 2022-08-16 | 2022-08-16 | Surface treatment process of aluminum alloy profile |
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| CN115404483A true CN115404483A (en) | 2022-11-29 |
| CN115404483B CN115404483B (en) | 2023-10-03 |
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| JP2018009216A (en) * | 2016-07-13 | 2018-01-18 | 日野自動車株式会社 | Aluminum alloy member, and method for manufacturing the same |
| CN109652836A (en) * | 2019-02-26 | 2019-04-19 | 国际铝业(厦门)有限公司 | A kind of process of surface treatment of 6063 aluminium alloy extrusions |
| CN110644030A (en) * | 2019-09-20 | 2020-01-03 | 成都阳光铝制品有限公司 | Preparation method of anticorrosive aluminum profile |
| CN110846647A (en) * | 2019-11-20 | 2020-02-28 | 湖南恒信新型建材有限公司 | Surface treatment process for aluminum alloy profile |
| CN111155120A (en) * | 2019-12-31 | 2020-05-15 | 中山市皓祥模具五金有限公司 | Surface treatment method of corrosion-resistant alloy part |
| CN112387983A (en) * | 2020-11-30 | 2021-02-23 | 浙江华朔科技股份有限公司 | Preparation method of aluminum alloy surface damping corrosion-resistant composite structure layer |
| CN113235082A (en) * | 2021-05-31 | 2021-08-10 | 江苏飞斯铝业有限公司 | Surface treatment process of aluminum alloy section |
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| JP2018009216A (en) * | 2016-07-13 | 2018-01-18 | 日野自動車株式会社 | Aluminum alloy member, and method for manufacturing the same |
| CN109652836A (en) * | 2019-02-26 | 2019-04-19 | 国际铝业(厦门)有限公司 | A kind of process of surface treatment of 6063 aluminium alloy extrusions |
| CN110644030A (en) * | 2019-09-20 | 2020-01-03 | 成都阳光铝制品有限公司 | Preparation method of anticorrosive aluminum profile |
| CN110846647A (en) * | 2019-11-20 | 2020-02-28 | 湖南恒信新型建材有限公司 | Surface treatment process for aluminum alloy profile |
| CN111155120A (en) * | 2019-12-31 | 2020-05-15 | 中山市皓祥模具五金有限公司 | Surface treatment method of corrosion-resistant alloy part |
| CN112387983A (en) * | 2020-11-30 | 2021-02-23 | 浙江华朔科技股份有限公司 | Preparation method of aluminum alloy surface damping corrosion-resistant composite structure layer |
| CN113235082A (en) * | 2021-05-31 | 2021-08-10 | 江苏飞斯铝业有限公司 | Surface treatment process of aluminum alloy section |
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