An oxidation-free, highly corrosion-resistant aluminum alloy profile and its production process and application

Abstract

The present invention relates to the technical field of aluminum alloy production and processing, and discloses an oxidation-free high-corrosion-resistant aluminum alloy profile, its production process and application. The present invention optimizes the alloy composition design and reasonably adjusts the proportions of elements such as magnesium, silicon, iron, manganese and copper, so that the interaction between the alloy elements reaches the optimal state, which not only improves the strength of the alloy, reduces the product thickness and reduces the cost, but also promotes the transformation of the β-Fe phase into the α-Fe phase, thereby improving the corrosion resistance of the alloy. At the same time, by limiting the copper content, it is avoided to increase the intergranular corrosion sensitivity of the alloy. At the same time, the present invention strictly controls the roughness of the extruded profile surface, and without increasing the cost, by improving the surface treatment technology, the corrosion resistance of the aluminum alloy is improved, while not affecting its electrical conductivity, and the means of removing the oxidation process. In general, the present invention improves the corrosion resistance of the aluminum alloy and also reduces the cost, and has significant advantages.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum alloy production and processing, and in particular to an oxidation-free, highly corrosion-resistant aluminum alloy profile and a production process and application thereof. Background Art

[0002] Photovoltaic technology converts sunlight into electricity, and its core component is the photovoltaic panel. The frames of photovoltaic panels are typically made of aluminum alloy. This is because aluminum alloy has excellent thermal conductivity and corrosion resistance, effectively protecting the electronic components within the photovoltaic panel. However, during use, aluminum alloys are affected by environmental factors such as moisture, oxygen, and ultraviolet light, which can cause an oxide film to form on the surface of the aluminum alloy. While this oxide film protects the aluminum alloy from further corrosion, it can also affect its electrical conductivity to a certain extent, thereby reducing the efficiency of the photovoltaic panel. Therefore, improving the corrosion resistance of aluminum alloys while ensuring their electrical conductivity to meet the application requirements of aluminum alloys in the photovoltaic field is a worthy research issue.

[0003] In the prior art, improving the corrosion resistance of aluminum alloys is primarily achieved by modifying their composition or employing specialized surface treatments, such as anodizing and applying anti-corrosion coatings. For example, adding magnesium and silicon can increase the strength of aluminum alloys, while adding iron and manganese can promote the transformation of β-Fe into α-Fe, thereby improving the corrosion resistance of aluminum alloys. Additionally, some methods improve corrosion resistance by modifying aluminum alloy processing techniques, such as homogenization and aging treatments.

[0004] While existing technologies have improved the corrosion resistance of aluminum alloys to a certain extent, some problems remain. First, existing aluminum alloy composition designs often ignore the interactions between alloying elements, resulting in suboptimal alloy performance. Second, existing surface treatment technologies are often costly and may negatively impact the electrical conductivity of aluminum alloys. Finally, existing processing techniques often require a long time and may cause changes in the aluminum alloy's microstructure, affecting its performance. Summary of the Invention

[0005] The object of the present invention is to provide an aluminum alloy profile having high corrosion resistance without the need for oxidation treatment and a method for manufacturing the same, so as to provide at least one or more beneficial options for solving one or more technical problems existing in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions.

[0007] A production process for oxidation-free, highly corrosion-resistant aluminum alloy profiles comprises the following steps: 1) preparing an aluminum alloy raw material, controlling the Mg content to be between 0.4-0.6wt%, the Si content to be between 0.6-0.8wt%, the Mg / Si ratio to be between 0.6-0.8, the Fe content to be between 0.15-0.3wt%, the Mn content to be between 0.1-0.2wt%, the Fe / Mn ratio to be between 1.2-2.0, the Cu content to be less than 0.05wt%, and the balance to be aluminum; and 1) melting and casting the prepared aluminum alloy raw material into an aluminum rod. 2) Homogenization treatment: The aluminum rod is homogenized using a three-stage homogenization process, with a first-stage holding temperature of 250-350°C and a holding time of 2-6 hours, a second-stage holding temperature of 520-560°C and a holding time of 4-8 hours, and a third-stage holding temperature of 570-610°C and a holding time of 1-4 hours. 3) Rapid cooling: After the homogenization treatment is completed, a rapid cooling rate of more than 250°C / h is performed. 4) Extrusion production: The aluminum rod is extruded or extruded into profiles. During the extrusion production process, the roughness of the extruded profile surface along the extrusion direction is controlled within Rz1.6, and the roughness perpendicular to the extrusion direction is controlled within Rz2.4. 5) Aging treatment: A two-stage aging process is used for the extruded profile, with a first-stage holding temperature of 170-190°C and a holding time of 4-8 hours, and a second-stage holding temperature of 140-160°C and a holding time of 2-4 hours.

[0008] More preferably, in step 1) of preparing the aluminum alloy raw material, post-consumer aluminum alloy scrap is used in combination with pure aluminum ingots, and Mg, Si, Fe, Mn, and Cu elements are added in proportion to achieve ratio control of the aluminum alloy raw material.

[0009] More preferably, the amount of post-consumer aluminum alloy scrap added is above 80 wt%.

[0010] More preferably, in step 1) preparing the aluminum alloy raw material, 82 wt% of post-consumer waste is used in combination with A00 pure aluminum ingots, and Mg, Si, Fe, Mn, and Cu elements are added in proportion to control the raw material ratio, and the Mg content is controlled at 0.45 wt%, the Si content is controlled at 0.61 wt%, the Mg / Si ratio is controlled at 0.74, the Fe content is controlled at 0.21 wt%, the Mn content is controlled at 0.14 wt%, the Fe / Mn ratio is controlled at 1.5, the Cu content is controlled at 0.03 wt%, and the balance is aluminum.

[0011] More preferably, in step 1) preparing the aluminum alloy raw material, 85 wt% of post-consumer waste is used in combination with A00 pure aluminum ingots, and Mg, Si, Fe, Mn, and Cu elements are added in proportion to control the raw material ratio, and the Mg content is controlled at 0.58 wt%, the Si content is controlled at 0.75 wt%, the Mg / Si ratio is controlled at 0.77, the Fe content is controlled at 0.27 wt%, the Mn content is controlled at 0.18 wt%, the Fe / Mn ratio is controlled at 1.5, the Cu content is controlled at 0.04 wt%, and the balance is aluminum.

[0012] On the other hand, the present invention also provides an oxidation-free high-corrosion-resistant aluminum alloy profile, which is produced using the above-mentioned production process for an oxidation-free high-corrosion-resistant aluminum alloy profile.

[0013] On the other hand, the present invention also provides an aluminum alloy profile specifically for a photovoltaic panel frame, which is produced using the above-mentioned production process for an oxidation-free, highly corrosion-resistant aluminum alloy profile.

[0014] On the other hand, the present invention also provides the use of the above-mentioned oxidation-free high-corrosion-resistant aluminum alloy profile in photovoltaic panels, aluminum alloy building products or automobile parts.

[0015] The present invention adopts the above technical solution to have at least the following beneficial effects.

[0016] First, the present invention optimizes the alloy composition and rationally adjusts the ratios of elements such as magnesium, silicon, iron, manganese, and copper to achieve optimal interactions between the alloy elements. This not only improves the alloy's strength, reduces product thickness, and lowers costs, but also promotes the transformation of the β-Fe phase into the α-Fe phase, thereby improving the alloy's corrosion resistance. Furthermore, by limiting the copper content, it avoids increasing the alloy's susceptibility to intergranular corrosion.

[0017] Second, under the premise of ensuring that the microstructure of the aluminum alloy remains unchanged, the corrosion resistance of the product is improved by improving the processing technology, while shortening the processing time. The present invention adopts a three-stage homogenization process and a two-stage aging process, which not only improves the uniformity of the microstructure of the alloy, but also improves the corrosion resistance of the alloy. In particular, the three-stage homogenization process achieves the specific purpose of each temperature stage, ultimately achieving the goal of complete transformation of the Fe phase. By lowering the secondary aging temperature, the diffusion rate of solute atoms in the matrix is ​​reduced, reducing the Mg and Si solute atoms that diffuse into the grain boundaries, increasing the degree of spheroidization of the grain boundary precipitation phase, and increasing the spacing between the precipitation phases, thereby improving the intergranular corrosion resistance.

[0018] Cost savings: This invention can utilize over 80% post-consumer aluminum alloy scrap, avoiding the imposition of a future EU carbon tax while also reducing raw material costs. Furthermore, due to the improved corrosion resistance of the alloy, the oxidation process can be eliminated in most operating conditions, further reducing oxidation costs.

[0019] Fourth, improved product quality: By strictly controlling the surface roughness of the extruded profile, this invention improves the corrosion resistance of the aluminum alloy through improved surface treatment technology without increasing costs, while also maintaining its electrical conductivity. This eliminates the need for oxidation processes and simultaneously increases the efficiency of photovoltaic panels. Overall, compared to existing technologies, this invention not only improves the corrosion resistance of the aluminum alloy, but also reduces costs and improves product quality, offering significant advantages. DETAILED DESCRIPTION

[0020] To facilitate those skilled in the art to better understand the essence of the present invention, the specific embodiments of the present invention are described in detail below.

[0021] A production process for oxidation-free high-corrosion-resistant aluminum alloy profiles comprises the following steps.

[0022] 1) Optimize the aluminum alloy composition: Add elements such as Mg, Si, Fe, Mn, and Cu in specific proportions to optimize the interaction between the alloying elements, thereby improving the performance of the aluminum alloy. Specifically, the Mg content is controlled between 0.4-0.6wt%, the Si content is between 0.6-0.8wt%, the Mg / Si ratio is between 0.6-0.8, the Fe content is between 0.15-0.3wt%, the Mn content is between 0.1-0.2wt%, the Fe / Mn ratio is between 1.2-2.0, the Cu content is less than 0.05wt%, and the balance is aluminum.

[0023] 2) Improved surface treatment technology: A three-stage homogenization process and a two-stage aging process are used. By precisely controlling the holding temperature and holding time, the internal structure of the alloy is made more uniform, improving the corrosion resistance of the aluminum alloy while not affecting its electrical conductivity. The first-stage homogenization holding temperature is 250-350°C for 2-6 hours, the second-stage holding temperature is 520-560°C for 4-8 hours, and the third-stage holding temperature is 570-610°C for 1-4 hours. In this invention, the first-stage homogenization is to fully diffuse the Mn element and enhance the subsequent transformation of the Fe phase; the second-stage homogenization is to fully dissolve the internal eutectic phase to avoid subsequent high-temperature overburning; and the third-stage homogenization is to use high temperature to promote the rapid transformation of the Fe phase to avoid residual β-Fe phase causing extrusion damage and line marks, affecting surface quality, and thus reducing corrosion resistance. In addition, rapid cooling at a rate greater than 250°C / h is required after the homogenization treatment is completed to avoid severe precipitation and coarsening of Mg2Si. The first-level aging insulation temperature is 170-190℃, and the insulation time is 4-8 hours. The second-level aging insulation temperature is 140-160℃, and the insulation time is 2-4 hours.

[0024] 3) Improved processing technology: During the extrusion process, the surface roughness of the extruded profile must be strictly controlled to improve the corrosion resistance of the aluminum alloy. Specifically, the roughness of the extruded profile surface along the extrusion direction must be controlled within Rz1.6, and the roughness perpendicular to the extrusion direction must be controlled within Rz2.4. This ensures that the oxide film formation rate is greater than or equal to the destruction rate, thereby preventing the oxide film from thinning to expose the internal substrate and accelerating corrosion.

[0025] 4) Make full use of post-consumer aluminum alloy scrap: Because the range of alloy composition has been greatly relaxed, a wider range of elements can be accepted, and the harmful effects of impurity elements are eliminated through technical means such as heat treatment, so more than 80wt% of post-consumer aluminum alloy scrap can be used. This not only avoids the imposition of future EU carbon taxes, but also reduces raw material costs.

[0026] 5) Removal of oxidation process: By improving the corrosion resistance of aluminum alloy, the oxidation process can be removed when used in most working conditions, thereby reducing oxidation costs. Example 1

[0027] A production process for an oxidation-free, highly corrosion-resistant aluminum alloy profile comprises the following steps.

[0028] 1) Prepare the aluminum alloy raw material, using 82wt% post-consumer waste and A00 pure aluminum ingots. Add elements such as Mg, Si, Fe, Mn, and Cu in specific proportions to achieve optimal interaction between the alloying elements. Specifically, the Mg content is controlled at 0.45wt%, the Si content is 0.61wt%, the Mg / Si ratio is 0.74, the Fe content is 0.21wt%, the Mn content is 0.14wt%, the Fe / Mn ratio is 1.5, the Cu content is 0.03wt%, and the balance is aluminum. The prepared aluminum alloy raw material is melted and cast into aluminum bars.

[0029] 2) Homogenization: A three-stage homogenization process is used to homogenize the aluminum bars. The first stage is at a holding temperature of 260°C for 3 hours, the second stage is at 530°C for 5 hours, and the third stage is at 580°C for 1.5 hours. Precise control of the holding temperature and time results in a more uniform internal structure.

[0030] 3) Rapid cooling: After homogenization, perform rapid cooling at a rate greater than 250°C / h to avoid severe precipitation and coarsening of Mg2Si.

[0031] 4) Extrusion. During the extrusion process, aluminum bars or profiles are extruded. The surface roughness of the extruded profile is controlled within Rz1.6 along the extrusion direction and within Rz2.4 perpendicular to the extrusion direction. Strictly controlling the surface roughness of the extruded profile can improve the corrosion resistance of the aluminum alloy.

[0032] 5) Aging treatment: a two-stage aging process is used for the extruded profiles, with the first stage insulation temperature at 180°C and the insulation time at 6 hours, and the second stage insulation temperature at 150°C and the insulation time at 2 hours. Example 2

[0033] A production process for an oxidation-free, highly corrosion-resistant aluminum alloy profile comprises the following steps.

[0034] 1) Prepare the aluminum alloy raw material, using 85wt% post-consumer waste and A00 pure aluminum ingots. Add elements such as Mg, Si, Fe, Mn, and Cu in specific proportions to achieve optimal interaction between the alloying elements. Specifically, the Mg content is controlled at 0.58wt%, the Si content is 0.75wt%, the Mg / Si ratio is 0.77, the Fe content is 0.27wt%, the Mn content is 0.18wt%, the Fe / Mn ratio is 1.5, the Cu content is 0.04wt%, and the balance is aluminum. The prepared aluminum alloy raw material is melted and cast into aluminum bars.

[0035] 2) Homogenization: The aluminum bars are homogenized using a three-stage homogenization process: the first stage is held at 310°C for 5 hours, the second stage is held at 550°C for 7 hours, and the third stage is held at 600°C for 2 hours. Precise control of the holding temperature and time results in a more uniform internal structure.

[0036] 3) Rapid cooling: After homogenization, perform rapid cooling at a rate greater than 250°C / h to avoid severe precipitation and coarsening of Mg2Si.

[0037] 4) Extrusion production. During the extrusion process, the roughness of the extruded profile surface along the extrusion direction is controlled within Rz1.6, and the roughness perpendicular to the extrusion direction is controlled within Rz2.4. By strictly controlling the roughness of the extruded profile surface, the corrosion resistance of the aluminum alloy can be improved.

[0038] 5) Aging treatment: the extruded profile adopts a two-stage aging process, the first stage insulation temperature is 175℃, the insulation time is 8 hours, the second stage insulation temperature is 150℃, the insulation time is 3 hours.

[0039] Comparative Example 1.

[0040] A production process for aluminum alloy profiles comprises the following steps.

[0041] 1) Prepare the aluminum alloy raw material, using 85wt% post-consumer waste and A00 pure aluminum ingots. Add Mg, Si, Fe, Mn, and Cu in specific proportions, controlling the Mg content to 0.58wt%, Si to 0.75wt%, Mg / Si ratio to 0.77, Fe to 0.27wt%, Mn to 0.18wt%, Fe / Mn ratio to 1.5, Cu to 0.04wt%, and the balance to aluminum. Melt the prepared aluminum alloy raw material and cast it into aluminum bars.

[0042] 2) Homogenization: A two-stage homogenization process is used, with the first stage holding temperature at 500°C for 8 hours and the second stage holding temperature at 570°C for 4 hours.

[0043] 3) Rapid cooling: After homogenization, perform rapid cooling at a rate greater than 250°C / h to avoid severe precipitation and coarsening of Mg2Si.

[0044] 4) Extrusion production: During the extrusion production process, the roughness of the extruded profile surface is not controlled.

[0045] 5) Aging treatment: the profile adopts a two-stage aging process, the first stage insulation temperature is 175℃, the insulation time is 8 hours, the second stage insulation temperature is 150℃, the insulation time is 3 hours.

[0046] Comparative Example 2.

[0047] A production process for aluminum alloy profiles comprises the following steps.

[0048] 1) Prepare the aluminum alloy raw material, using 85wt% post-consumer waste and A00 pure aluminum ingots. Add Mg, Si, Fe, Mn, and Cu in specific proportions, controlling the Mg content to 0.58wt%, Si to 0.75wt%, Mg / Si ratio to 0.77, Fe to 0.27wt%, Mn to 0.18wt%, Fe / Mn ratio to 1.5, Cu to 0.04wt%, and the balance to aluminum. Melt the prepared aluminum alloy raw material and cast it into aluminum bars.

[0049] 2) Homogenization: A three-stage homogenization process is used, with the first stage holding temperature at 310°C for 5 hours, the second stage holding temperature at 550°C for 7 hours, and the third stage holding temperature at 600°C for 2 hours.

[0050] 3) Rapid cooling: After homogenization, perform rapid cooling at a rate greater than 250°C / h to avoid severe precipitation and coarsening of Mg2Si.

[0051] 4) Extrusion production: During the extrusion production process, the roughness of the extruded profile surface is not controlled.

[0052] 5) Aging treatment: The profile adopts a single-stage aging process with a holding temperature of 175°C and a holding time of 8 hours.

[0053] Comparative Example 3.

[0054] A production process for aluminum alloy profiles comprises the following steps.

[0055] 1) Prepare the aluminum alloy raw material, using 86 wt% post-consumer waste and A00 pure aluminum ingots. Add Mg, Si, Fe, Mn, and Cu in specific proportions, controlling the Mg content to 0.65 wt%, Si to 0.62 wt%, Mg / Si ratio to 1.05, Fe to 0.27 wt%, Mn to 0.04 wt%, Fe / Mn ratio to 6.8, and Cu to 0.15 wt%. The balance is aluminum. The prepared aluminum alloy raw material is melted and cast into aluminum bars.

[0056] 2) Homogenization: A three-stage homogenization process is used, with the first stage holding temperature at 260°C for 3 hours, the second stage at 530°C for 5 hours, and the third stage at 580°C for 1.5 hours.

[0057] 3) Rapid cooling: After homogenization, perform rapid cooling at a rate greater than 250°C / h to avoid severe precipitation and coarsening of Mg2Si.

[0058] 4) Extrusion production: During the extrusion production process, the roughness of the extruded profile surface is not controlled.

[0059] 5) Aging treatment: the profile adopts a two-stage aging process, the first stage insulation temperature is 180℃, the insulation time is 6 hours, the second stage insulation temperature is 150℃, the insulation time is 2 hours.

[0060] Performance testing.

[0061] In order to better reflect the technological progress of the present invention, the performance tests were carried out on the products prepared in Examples 1-2 and Comparative Examples 1-3, and the results are shown in Table 1.

[0062] Table 1. Performance test comparison table

[0063] .

[0064] As can be seen from Table 1, the technical effect of the present invention is the result of the combined effect of alloy formula optimization and process optimization. When the process or formula exceeds the protection scope of this patent, the corrosion resistance of the product will be significantly reduced.

[0065] Due to the technological advancement of the present invention, it can be widely used in application fields such as photovoltaic panel manufacturing, aluminum alloy building materials, and automobile parts manufacturing. Compared with the existing technology, the aluminum alloy of the present invention has excellent corrosion resistance, can effectively protect the electronic components inside the photovoltaic panel, improve the service life and efficiency of the photovoltaic panel, and meet the demand for high-performance aluminum alloys in the field of photovoltaic technology. Secondly, the aluminum alloy of the present invention adopts a unique composition design and processing technology, which can not only improve the strength of the alloy, but also avoid the negative effects caused by high Fe elements, such as drag, line marks, etc., improve the performance of the aluminum alloy, and meet the demand for high-performance aluminum alloys in the field of aluminum alloy processing technology. Finally, the aluminum alloy of the present invention has good corrosion resistance, can reduce or avoid surface treatment, such as anodizing, coating with anti-corrosion coating, etc., reduce production costs, and meet the demand for high-performance aluminum alloys in the field of corrosion protection technology.

[0066] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art could make numerous modifications and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention. Any portions not described in the specific embodiments represent prior art or common knowledge.

[0068] It should also be noted that, in the description of the present invention, the detailed description of the preferred embodiment of the present invention and the included embodiments can more easily understand the content of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In the event of a conflict, the definitions in this specification shall prevail.

[0069] As used herein, the term "prepared from" is used synonymously with "comprising." As used herein, the terms "comprising," "including," "having," "containing," or any other variations thereof, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises the listed elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

[0070] In the present invention, when amount, concentration or other value or parameter is expressed as a range, preferred range or a series of upper preferred values ​​and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value with any range lower limit or preferred value, regardless of whether the range is disclosed separately. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted as including a range of "1 to 4", "1 to 3", "1 to 2", "1 to 2 and 4 to 5", "1 to 3 and 5" etc. When a numerical range is described in the present invention, unless otherwise stated, the range is intended to include its end value and all integers and fractions within the range.

[0071] In addition, the indefinite articles "a" and "an" before the elements or components of the present invention do not limit the quantity requirement (i.e., the number of times the elements or components appear). Therefore, "a" or "an" should be interpreted as including one or at least one, and elements or components in the singular also include plural forms, unless the number is obviously intended to be singular.

Claims

1. A production process for oxidation-free, highly corrosion-resistant aluminum alloy profiles, characterized in that: The following steps are involved: 1) preparing an aluminum alloy raw material, controlling the Mg content to be between 0.4-0.6wt%, the Si content to be between 0.6-0.8wt%, the Mg / Si ratio to be between 0.6-0.8, the Fe content to be between 0.15-0.3wt%, the Mn content to be between 0.1-0.2wt%, the Fe / Mn ratio to be between 1.2-2.0, the Cu content to be less than 0.05wt%, and the balance to be aluminum; melting and casting the prepared aluminum alloy raw material into an aluminum rod; 2) Homogenization treatment: The aluminum bars are homogenized using a three-stage homogenization process. The first stage is at a holding temperature of 250-350°C for 2-6 hours, the second stage is at a holding temperature of 520-560°C for 4-8 hours, and the third stage is at a holding temperature of 570-610°C for 1-4 hours. 3) Rapid cooling: After homogenization, perform rapid cooling at a rate greater than 250°C / h; 4) Extrusion production: extrusion production of aluminum bars or extruded profiles. During the extrusion production process, the roughness of the extruded profile surface along the extrusion direction is controlled within Rz1.6, and the roughness perpendicular to the extrusion direction is controlled within Rz2.4; 5) Aging treatment: a two-stage aging process is used for extruded profiles, with the first stage holding temperature at 170-190°C for 4-8 hours and the second stage holding temperature at 140-160°C for 2-4 hours; In step 1) of preparing the aluminum alloy raw material, post-consumer aluminum alloy scrap is used in combination with pure aluminum ingots, and Mg, Si, Fe, Mn, and Cu elements are added in proportion to achieve ratio control of the aluminum alloy raw material. The amount of post-consumer aluminum alloy scrap added is above 80wt%.

2. The production process of an oxidation-free, highly corrosion-resistant aluminum alloy profile according to claim 1, characterized in that: In step 1) preparing the aluminum alloy raw material, 82 wt% of post-consumer waste is used in combination with A00 pure aluminum ingots, and Mg, Si, Fe, Mn, and Cu elements are added in proportion to control the raw material ratio. The Mg content is controlled at 0.45 wt%, the Si content is controlled at 0.61 wt%, the Mg / Si ratio is controlled at 0.74, the Fe content is controlled at 0.21 wt%, the Mn content is controlled at 0.14 wt%, the Fe / Mn ratio is controlled at 1.5, the Cu content is controlled at 0.03 wt%, and the balance is aluminum.

3. The production process of an oxidation-free, highly corrosion-resistant aluminum alloy profile according to claim 1, characterized in that: In step 1) preparing the aluminum alloy raw material, 85 wt% of post-consumer waste is used in combination with A00 pure aluminum ingots, and Mg, Si, Fe, Mn, and Cu elements are added in proportion to control the raw material ratio. The Mg content is controlled at 0.58 wt%, the Si content is controlled at 0.75 wt%, the Mg / Si ratio is controlled at 0.77, the Fe content is controlled at 0.27 wt%, the Mn content is controlled at 0.18 wt%, the Fe / Mn ratio is controlled at 1.5, the Cu content is controlled at 0.04 wt%, and the balance is aluminum.

4. An oxidation-free, highly corrosion-resistant aluminum alloy profile, characterized in that: The aluminum alloy profile is produced by using the production process for an oxidation-free, highly corrosion-resistant aluminum alloy profile as described in any one of claims 1 to 3.

5. A special aluminum alloy profile for photovoltaic panel frame, characterized in that: The aluminum alloy profile is produced by using the production process for an oxidation-free, highly corrosion-resistant aluminum alloy profile as described in any one of claims 1 to 3.

6. Use of the oxidation-free, highly corrosion-resistant aluminum alloy profile as claimed in claim 4 in photovoltaic panels, aluminum alloy building products or automotive parts.