Light high-strength aluminum-based composite board

Abstract

The utility model discloses a light-weight high-strength aluminum-based composite board, which comprises an aluminum alloy base layer, a metal net and an aluminum alloy surface layer, connecting columns are arranged in the metal net, and the aluminum alloy base layer and the aluminum alloy surface layer are compounded into an integral structure through the connecting columns in the metal net. According to the aluminum-based composite board, the metal net is additionally arranged on the aluminum-based composite board, and the aluminum-based composite board is connected through the metal net, so that the problem that welding between an existing titanium alloy material and an existing aluminum alloy material is difficult is solved, the requirement for manufacturing a connecting block in a needed shape on a panel made of the aluminum alloy material is met, welding machining is convenient, and the heat dissipation performance of the panel is enhanced; the product has excellent comprehensive performance such as high strength, high hardness and excellent plasticity, the overall strength of the product is improved, and the use requirements of the product are met.

Description

Technical Field

[0001] The utility model relates to the technical field of material forming, in particular to a light and high-strength aluminum-based composite plate. Background Art

[0002] Titanium alloy is an alloy composed of titanium as the base material and other alloying elements. It has the advantages of low density (light weight), high specific strength, good corrosion resistance, high heat resistance, and good process performance. Based on the above advantages, many high-precision equipment such as aerospace equipment, electronic equipment, and electrical equipment are made of titanium alloy materials. In the frame or structure of high-precision equipment such as aerospace equipment, electronic equipment, and electrical equipment, many mechanisms and electronic components are usually installed. Therefore, many mounting holes, mounting grooves, and other mounting and positioning structures for the installation and positioning of mechanisms and electronic components are usually set on the surface or back of the titanium alloy frame or structure. However, due to the poor ductility and high hardness of titanium alloy, titanium alloy processing is difficult, the processing technology is complex, and the processing cost is high.

[0003] Take mobile phones as an example. With the rapid development of science and technology, titanium alloy, as a new type of high-performance metal structural material, has excellent performance advantages such as low density, high specific strength, corrosion resistance, high temperature resistance and impact resistance. Titanium alloy frame structure mobile phones lead the current market trend. As smart phones gradually move towards large screens, thinness and multi-functions, the mainstream screen size continues to grow. Larger screens require higher strength materials to support them, so they also require larger mobile phone frames and matching panels. However, the panels connected to the mobile phone frames are currently mainly aluminum alloy panels that are easy to process. Due to the low specific gravity, good thermal conductivity and low price of aluminum alloy, it has always been the main material of mobile phone panels. Using aluminum alloy panels, it is easy to process, and multiple connection blocks of different shapes can be made on the panel. As we all know, the performance of titanium alloy and aluminum alloy is quite different. When aluminum alloy is connected to titanium alloy, its compatibility is poor and it is difficult to connect, resulting in poor reliability of the connection. How to combine them well and achieve lightweight and high-strength performance has become an urgent problem to be solved.

[0004] After searching, the publication number is CN 104209697A, which discloses a method for preparing a layered titanium-aluminum composite plate, while the publication number is CN106583908A, which discloses a layered high-strength and lightweight titanium-aluminum composite plate and its preparation method, and the publication number is CN115029649A, which discloses an aluminum-based composite material and its hot extrusion molding preparation method. It can be seen from the three retrieved patent documents that the aluminum-titanium compatibility problem is solved from different angles. In order to facilitate the connection between the existing titanium alloy middle frame and the aluminum alloy panel, a lightweight and high-strength aluminum-based composite panel is developed. A metal mesh is added to the aluminum-based composite panel and connected to the existing titanium alloy middle frame using the metal mesh. This not only solves the problem of difficulty in welding the existing titanium alloy middle frame and the aluminum alloy panel, but also meets the need to make a connecting block in the shape of a titanium material extending out on the aluminum alloy panel, which is convenient for welding processing, thereby enhancing the heat dissipation performance of the panel, improving its overall strength, and meeting the product use requirements. The aluminum-based composite panel can also meet the use needs of high-precision equipment such as electronic equipment, aerospace equipment, power equipment, precision equipment or radiation-resistant equipment. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide an aluminum-based composite plate with excellent performance. When the aluminum-based composite plate is used to process related products, it has the advantages of stable processing technology, high production efficiency, short processing time and low production cost. Specifically, it is a lightweight and high-strength aluminum-based composite plate.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer, a metal mesh and an aluminum alloy surface layer, in which connecting columns are provided in the metal mesh, and the aluminum alloy base layer and the aluminum alloy surface layer are composited into an integrated structure through the connecting columns in the metal mesh.

[0007] Furthermore, in the utility model, a lightweight and high-strength aluminum-based composite plate, the metal mesh is any one of a titanium alloy mesh, a zirconium alloy mesh, a nickel-based alloy mesh, a copper alloy mesh, a molybdenum alloy mesh, a niobium alloy mesh, a tantalum alloy mesh or a stainless steel mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh, the connecting column is located in the penetrating micropore, the aluminum alloy base layer and the aluminum alloy surface layer are composited into an integrated structure through the connecting column in the penetrating micropore, the composite method is forging or hot pressing treatment, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer and the aluminum alloy surface layer and the metal mesh, so as to reduce deformation.

[0008] Furthermore, in the lightweight and high-strength aluminum-based composite plate described in the utility model, the penetrating micropores in the metal mesh are any one of a circular, square, elliptical or waist-shaped structure.

[0009] Furthermore, in the lightweight and high-strength aluminum-based composite plate described in the utility model, the thickness of the metal mesh is 0.05 to 10 mm.

[0010] Furthermore, in the lightweight and high-strength aluminum-based composite plate described in the utility model, the aluminum alloy base layer and the aluminum alloy surface layer are both aluminum alloy materials or a mixture of aluminum alloy materials and functional materials.

[0011] Furthermore, in the lightweight and high-strength aluminum-based composite plate described in the utility model, the aluminum alloy material and the functional material are mixed in a dosage ratio of (10-5):1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm.

[0012] Furthermore, in the lightweight and high-strength aluminum-based composite plate described in the utility model, the functional material is any one of diamond powder, aluminum alloy and diamond mixed powder, aluminum alloy and silicon carbide powder, titanium zirconium powder, copper powder or aluminum powder.

[0013] Compared with the prior art, the lightweight and high-strength aluminum-based composite plate described in the utility model has the following beneficial effects: the aluminum alloy base layer and the aluminum alloy surface layer are composited into an integrated structure by using the connecting columns in the metal mesh, and the connecting columns are used to absorb the internal stress generated by the different thermal expansion coefficients between the aluminum alloy base layer, the aluminum alloy surface layer and the metal mesh during the composite process to reduce deformation. The aluminum-based composite plate prepared by hot pressing or forging methods uses the added functional material powder to mix with the matrix aluminum alloy material to form a continuous high-hardness intermetallic compound phase inside, which can not only play a connecting and supporting role, but also play a good heat dissipation role.

[0014] By adopting the aluminum-based composite plate described in the utility model, a reinforced aluminum-based composite plate with excellent comprehensive properties such as high strength, high hardness and excellent plasticity is realized, and the excellent comprehensive performance of the composite plate is guaranteed. It can not only solve the problem of connecting the existing titanium alloy panel with the aluminum alloy panel, but also meet the needs of making connecting blocks of required shapes on the aluminum alloy panel, which is convenient for processing and forming. In addition, the use of the aluminum-based composite plate can not only enhance the heat dissipation performance of the panel, but also improve its overall strength to meet the product use requirements. The aluminum-based composite plate can be widely used in high-precision and advanced equipment such as electronic equipment, aerospace equipment, power equipment, precision equipment or radiation-resistant equipment to meet their use needs.

[0015] In summary, by adopting the aluminum-based composite plate described in the utility model, by adding a metal mesh to the aluminum-based composite plate and connecting them with the metal mesh, not only can the problem of difficulty in connecting and welding the existing titanium alloy material with the aluminum alloy material be solved, but also the need to make a connecting block in the shape of the titanium material on the aluminum alloy panel is met, which is convenient for welding processing, thereby enhancing the heat dissipation performance of the panel, achieving excellent comprehensive performance such as high strength, high hardness and excellent plasticity, improving its overall strength, and meeting the product use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the metal mesh described in the utility model Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the structure of the metal mesh described in the utility model Figure 2 .

[0020] As shown in the figure: 1-aluminum alloy surface layer, 2-metal mesh, 3-aluminum alloy base layer. DETAILED DESCRIPTION

[0021] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0022] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", etc. quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] It should be noted that the term "comprise" or any other variation is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus. Example 1

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer 3, a metal mesh 2 and an aluminum alloy surface layer 1, wherein a connecting column is provided in the metal mesh 2, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are composited into an integrated structure through the connecting column in the metal mesh 2; wherein the metal mesh 2 adopts a titanium alloy mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh 2, the penetrating micropores are circular structures, the connecting column is located in the penetrating micropores, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are composited into an integrated structure through the connecting column in the penetrating micropores, and the composite method is forging, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 and the metal mesh 2, so as to reduce deformation.

[0026] Furthermore, the aluminum-based composite plate described in the embodiment of the utility model is adopted, the thickness of the metal mesh 2 is 0.05 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both made of aluminum alloy materials.

[0027] The method for preparing the above-mentioned aluminum-based composite plate is to first prepare a metal mesh 2 with penetrating micropores, then place the metal mesh 2 in a mold, and extend the outer side of the metal mesh 2 to the outside of the mold, then inject molten aluminum alloy liquid into the mold, and finally forge it to form a high-density integrated structure, so as to obtain the aluminum-based composite plate; specifically, the following steps are included:

[0028] (1) First, select a corresponding mold according to the shape and structure of the aluminum-based composite plate to be prepared, and at the same time, select a corresponding metal sheath according to the shape and structure of the aluminum-based composite plate to be prepared, and the outer dimensions of the metal sheath are required to be 0.5 to 3 mm larger than the size of the workpiece;

[0029] (2) selecting a metal mesh 2 of corresponding thickness and making corresponding penetrating micropores in the metal mesh 2;

[0030] (3) placing the metal mesh 2 in the mold, and requiring that the sum of the distances between the metal mesh 2 and the top and bottom of the mold corresponds to the thickness of the aluminum-based composite plate;

[0031] (4) placing the selected base aluminum alloy material in an aluminizing furnace for melting, degassing the base aluminum alloy after it is melted, and then keeping it warm to obtain a molten aluminum alloy, and finally injecting the molten aluminum alloy into a mold, and allowing the molten aluminum alloy injected into the mold to pass through the penetrating micropores on the metal mesh 2 under vibration to obtain a blank;

[0032] (5) placing the blank in a metal sheath and sealing the metal sheath;

[0033] (6) The sealed metal sheath is heated and vacuumized during the heating process; the specific vacuum degassing process parameters are: degassing temperature is 250°C, vacuum degree is 1X10 -1 Pa, the degassing time is 5 hours;

[0034] (7) placing the vacuum-treated metal sheath in a hot pressing device for hot pressing, so that the aluminum alloy surface layer 1 above the metal mesh 2 and the aluminum alloy base layer 3 below are hot-pressed and fused into one through the connecting columns penetrating the micropores; wherein the hot pressing treatment is a forging treatment, and the forging treatment method is to place the vacuum-treated metal sheath in a forging machine for forging and rolling;

[0035] (8) The metal sheath after the hot pressing treatment is taken out from the hot pressing equipment, cooled to room temperature, and then the metal sheath is removed to obtain a finished aluminum-based composite plate of the desired shape and size. Example 2

[0036] like Figure 1 and Figure 3 As shown, this embodiment provides a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer 3, a metal mesh 2 and an aluminum alloy surface layer 1, wherein a connecting column is provided in the metal mesh 2, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are composited into an integrated structure through the connecting column in the metal mesh 2; wherein the metal mesh 2 adopts a zirconium alloy mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh 2, and the penetrating micropores are waist-shaped structures, and the connecting column is located in the penetrating micropores, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are composited into an integrated structure through the connecting column in the penetrating micropores, and the composite method is hot pressing treatment, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 and the metal mesh 2, so as to reduce deformation.

[0037] Furthermore, the aluminum-based composite plate described in the embodiment of the utility model is adopted, the thickness of the metal mesh 2 is 0.5 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both made of aluminum alloy materials.

[0038] The method for preparing the above-mentioned aluminum-based composite plate is to first prepare a metal mesh 2 with penetrating micropores, then place the metal mesh 2 in a mold, and extend the outer side of the metal mesh 2 to the outside of the mold, then inject molten aluminum alloy liquid into the mold, and finally perform hot pressing to composite into a high-density integrated structure, so as to obtain the aluminum-based composite plate; specifically, the following steps are included:

[0039] (1) First, select a corresponding mold according to the shape and structure of the aluminum-based composite plate to be prepared, and at the same time, select a corresponding metal sheath according to the shape and structure of the aluminum-based composite plate to be prepared, and the outer dimensions of the metal sheath are required to be 0.5 to 3 mm larger than the size of the workpiece;

[0040] (2) selecting a metal mesh 2 of corresponding thickness and making corresponding penetrating micropores in the metal mesh 2;

[0041] (3) placing the metal mesh 2 in the mold, and requiring that the sum of the distances between the metal mesh 2 and the top and bottom of the mold corresponds to the thickness of the aluminum-based composite plate;

[0042] (4) placing the selected base aluminum alloy material in an aluminizing furnace for melting, degassing the base aluminum alloy after it is melted, and then keeping it warm to obtain a molten aluminum alloy, and finally injecting the molten aluminum alloy into a mold, and allowing the molten aluminum alloy injected into the mold to pass through the penetrating micropores on the metal mesh 2 under vibration to obtain a blank;

[0043] (5) placing the blank in a metal sheath and sealing the metal sheath;

[0044] (6) The sealed metal sheath is heated and vacuumized during the heating process; the specific vacuum degassing process parameters are: degassing temperature is 350°C, vacuum degree is 1X10 -2 Pa, the degassing time is 15 hours;

[0045] (7) placing the vacuum-treated metal sheath in a hot pressing device for hot pressing treatment, so that the aluminum alloy surface layer 1 above the metal mesh 2 and the aluminum alloy base layer 3 below are hot-pressed and fused into one through the connecting columns penetrating the micropores; wherein the hot pressing treatment is hot isostatic pressing treatment, and the hot isostatic pressing treatment method is to place the vacuum-treated metal sheath in a hot isostatic pressing machine for hot isostatic pressing treatment, and the specific hot isostatic pressing process parameters are: hot isostatic pressing temperature of 300°C, pressure of 100MPa, and heat preservation and pressure holding time of 3 to 5 hours.

[0046] (8) The metal sheath after the hot pressing treatment is taken out from the hot pressing equipment, cooled to room temperature, and then the metal sheath is removed to obtain a finished aluminum-based composite plate of the desired shape and size. Example 3

[0047] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer 3, a metal mesh 2 and an aluminum alloy surface layer 1, wherein a connecting column is provided in the metal mesh 2, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are combined into an integrated structure through the connecting column in the metal mesh 2; wherein the metal mesh 2 adopts a nickel-based alloy mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh 2, wherein the penetrating micropores are elliptical structures, and the connecting column is located in the penetrating micropores, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are combined into an integrated structure through the connecting column in the penetrating micropores, and the composite method is forging, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 and the metal mesh 2, so as to reduce deformation.

[0048] Furthermore, the aluminum-based composite plate described in the embodiment of the utility model is adopted, the thickness of the metal mesh 2 is 2 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both made of aluminum alloy materials.

[0049] The method for preparing the above-mentioned aluminum-based composite plate is to first prepare a metal mesh 2 with penetrating micropores, then place the metal mesh 2 in a mold, and extend the outer side of the metal mesh 2 to the outside of the mold, then inject molten aluminum alloy liquid into the mold, and finally forge it to form a high-density integrated structure, so as to obtain the aluminum-based composite plate; specifically, the following steps are included:

[0050] (1) First, select a corresponding mold according to the shape and structure of the aluminum-based composite plate to be prepared, and at the same time, select a corresponding metal sheath according to the shape and structure of the aluminum-based composite plate to be prepared, and the outer dimensions of the metal sheath are required to be 0.5 to 3 mm larger than the size of the workpiece;

[0051] (2) selecting a metal mesh 2 of corresponding thickness and making corresponding penetrating micropores in the metal mesh 2;

[0052] (3) placing the metal mesh 2 in the mold, and requiring that the sum of the distances between the metal mesh 2 and the top and bottom of the mold corresponds to the thickness of the aluminum-based composite plate;

[0053] (4) placing the selected base aluminum alloy material in an aluminizing furnace for melting, degassing the base aluminum alloy after it is melted, and then keeping it warm to obtain a molten aluminum alloy, and finally injecting the molten aluminum alloy into a mold, and allowing the molten aluminum alloy or the molten aluminum alloy and the mixed powder injected into the mold to pass through the penetrating micropores on the metal mesh 2 under vibration to obtain a blank;

[0054] (5) placing the blank in a metal sheath and sealing the metal sheath;

[0055] (6) The sealed metal sheath is heated and vacuumized during the heating process; the specific vacuum degassing process parameters are: degassing temperature is 550°C, vacuum degree is 1X10 -4 Pa, the degassing time is 25 hours;

[0056] (7) placing the vacuum-treated metal sheath in a hot pressing device for hot pressing, so that the aluminum alloy surface layer 1 above the metal mesh 2 and the aluminum alloy base layer 3 below are hot-pressed and fused into one through the connecting columns penetrating the micropores; wherein the hot pressing treatment is forging; the forging treatment method is to place the vacuum-treated metal sheath in a forging machine for forging and rolling;

[0057] (8) The metal sheath after the hot pressing treatment is taken out from the hot pressing equipment, cooled to room temperature, and then the metal sheath is removed to obtain a finished aluminum-based composite plate of the desired shape and size. Example 4

[0058] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer 3, a metal mesh 2 and an aluminum alloy surface layer 1, wherein a connecting column is provided in the metal mesh 2, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are combined into an integrated structure through the connecting column in the metal mesh 2; wherein the metal mesh 2 adopts a molybdenum alloy mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh 2, wherein the penetrating micropores are waist-shaped structures, and the connecting column is located in the penetrating micropores, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are combined into an integrated structure through the connecting column in the penetrating micropores, and the composite method is forging, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 and the metal mesh 2, so as to reduce deformation.

[0059] Further, the aluminum-based composite plate described in the embodiment of the utility model is used, the thickness of the metal mesh 2 is 5 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both a mixture formed by mixing an aluminum alloy material and a functional material, and the aluminum alloy material and the functional material are mixed in a dosage ratio of 10:1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm, and the functional material is diamond powder;

[0060] The method for preparing the above-mentioned aluminum-based composite plate is to first prepare a metal mesh 2 with penetrating micropores, then place the metal mesh 2 in a mold, and extend the outer side of the metal mesh 2 to the outside of the mold, then inject molten aluminum alloy liquid into the mold, and finally forge it to form a high-density integrated structure, so as to obtain the aluminum-based composite plate; specifically, the following steps are included:

[0061] (1) First, select a corresponding mold according to the shape and structure of the aluminum-based composite plate to be prepared, and at the same time, select a corresponding metal sheath according to the shape and structure of the aluminum-based composite plate to be prepared, and the outer dimensions of the metal sheath are required to be 0.5 to 3 mm larger than the size of the workpiece;

[0062] (2) selecting a metal mesh 2 of corresponding thickness and making corresponding penetrating micropores in the metal mesh 2;

[0063] (3) placing the metal mesh 2 in the mold, and requiring that the sum of the distances between the metal mesh 2 and the top and bottom of the mold corresponds to the thickness of the aluminum-based composite plate;

[0064] (4) placing the selected base aluminum alloy material in an aluminizing furnace for melting, degassing the base aluminum alloy after it is melted, and then keeping it warm to obtain a molten aluminum alloy, and finally injecting the molten aluminum alloy into a mold, and before injecting the molten aluminum alloy, placing a mixed powder on the metal in the mold in advance, and allowing the molten aluminum alloy and the mixed powder injected into the mold to pass through the penetrating micropores on the metal mesh 2 under vibration to obtain a blank;

[0065] (5) placing the blank in a metal sheath and sealing the metal sheath;

[0066] (6) The sealed metal sheath is heated and vacuumized during the heating process; the specific vacuum degassing process parameters are: degassing temperature is 450°C, vacuum degree is 1X10 -3 Pa, the degassing time is 10 hours;

[0067] (7) placing the vacuum-treated metal sheath in a hot pressing device for hot pressing, so that the aluminum alloy surface layer 1 above the metal mesh 2 and the aluminum alloy base layer 3 below are hot-pressed and fused into one through the connecting columns penetrating the micropores; wherein the hot pressing treatment is forging; the forging treatment method is to place the vacuum-treated metal sheath in a forging machine for forging and rolling;

[0068] (8) The metal sheath after the hot pressing treatment is taken out from the hot pressing equipment, cooled to room temperature, and then the metal sheath is removed to obtain a finished aluminum-based composite plate of the desired shape and size. Example 5

[0069] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer 3, a metal mesh 2 and an aluminum alloy surface layer 1, wherein a connecting column is provided in the metal mesh 2, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are composited into an integrated structure through the connecting column in the metal mesh 2; wherein the metal mesh 2 adopts a niobium alloy mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh 2, wherein the penetrating micropores are circular structures, and the connecting column is located in the penetrating micropores, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are composited into an integrated structure through the connecting column in the penetrating micropores, and the composite method is hot pressing treatment, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 and the metal mesh 2, so as to reduce deformation.

[0070] Furthermore, the aluminum-based composite plate described in the embodiment of the utility model is used, the thickness of the metal mesh 2 is 8 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both a mixture of an aluminum alloy material and a functional material, and the aluminum alloy material and the functional material are mixed in a dosage ratio of 5:1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm, and the functional material adopts a mixed powder of aluminum alloy and diamond, and the aluminum alloy and diamond mixed powder are mixed in a dosage ratio of 1:1.

[0071] The method for preparing the above-mentioned aluminum-based composite plate is to first prepare a metal mesh 2 with penetrating micropores, then place the metal mesh 2 in a mold, and extend the outer side of the metal mesh 2 to the outside of the mold, then inject molten aluminum alloy liquid into the mold, and finally perform hot pressing to composite into a high-density integrated structure, so as to obtain the aluminum-based composite plate; specifically, the following steps are included:

[0072] (1) First, select a corresponding mold according to the shape and structure of the aluminum-based composite plate to be prepared, and at the same time, select a corresponding metal sheath according to the shape and structure of the aluminum-based composite plate to be prepared, and the outer dimensions of the metal sheath are required to be 0.5 to 3 mm larger than the size of the workpiece;

[0073] (2) selecting a metal mesh 2 of corresponding thickness and making corresponding penetrating micropores in the metal mesh 2;

[0074] (3) placing the metal mesh 2 in the mold, and requiring that the sum of the distances between the metal mesh 2 and the top and bottom of the mold corresponds to the thickness of the aluminum-based composite plate;

[0075] (4) placing the selected base aluminum alloy material in an aluminizing furnace for melting, degassing the base aluminum alloy after it is melted, and then keeping it warm to obtain a molten aluminum alloy, and finally injecting the molten aluminum alloy into a mold, and before injecting the molten aluminum alloy, placing a mixed powder on the metal in the mold in advance, and allowing the molten aluminum alloy and the mixed powder injected into the mold to pass through the penetrating micropores on the metal mesh 2 under vibration to obtain a blank;

[0076] (5) placing the blank in a metal sheath and sealing the metal sheath;

[0077] (6) The sealed metal sheath is heated and vacuumized during the heating process; the specific vacuum degassing process parameters are: degassing temperature is 450°C, vacuum degree is 1X10 -2 Pa, the degassing time is 20 hours;

[0078] (7) placing the vacuum-treated metal sheath in a hot pressing device for hot pressing treatment, so that the aluminum alloy surface layer 1 above the metal mesh 2 and the aluminum alloy base layer 3 below are hot-pressed and fused into one through the connecting columns penetrating the micropores; wherein the hot pressing treatment is hot isostatic pressing treatment, and the hot isostatic pressing treatment method is to place the vacuum-treated metal sheath in a hot isostatic pressing machine for hot isostatic pressing treatment, and the specific hot isostatic pressing process parameters are: hot isostatic pressing temperature of 450°C, pressure of 150MPa, and heat preservation and pressure holding time of 3 to 5 hours.

[0079] (8) The metal sheath after the hot pressing treatment is taken out from the hot pressing equipment, cooled to room temperature, and then the metal sheath is removed to obtain a finished aluminum-based composite plate of the desired shape and size. Example 6

[0080] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which includes an aluminum alloy base layer 3, a metal mesh 2 and an aluminum alloy surface layer 1, wherein a connecting column is provided in the metal mesh 2, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are combined into an integrated structure through the connecting column in the metal mesh 2; wherein the metal mesh 2 adopts a tantalum alloy mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh 2, wherein the penetrating micropores are of a square structure, and the connecting column is located in the penetrating micropores, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are combined into an integrated structure through the connecting column in the penetrating micropores, and the composite method is forging or hot pressing treatment, and the connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 and the metal mesh 2, so as to reduce deformation.

[0081] Furthermore, the aluminum-based composite plate described in the embodiment of the utility model is used, the thickness of the metal mesh 2 is 10 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both a mixture of an aluminum alloy material and a functional material, and the aluminum alloy material and the functional material are mixed in a dosage ratio of 8:1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm, and the functional material is composed of aluminum alloy and silicon carbide powder, and the aluminum alloy and silicon carbide powder are mixed in a dosage ratio of 1:1.

[0082] The method for preparing the above-mentioned aluminum-based composite plate is to first prepare a metal mesh 2 with penetrating micropores, then place the metal mesh 2 in a mold, and extend the outer side of the metal mesh 2 to the outside of the mold, then inject molten aluminum alloy liquid into the mold, and finally forge it to form a high-density integrated structure, so as to obtain the aluminum-based composite plate; specifically, the following steps are included:

[0083] (1) First, select a corresponding mold according to the shape and structure of the aluminum-based composite plate to be prepared, and at the same time, select a corresponding metal sheath according to the shape and structure of the aluminum-based composite plate to be prepared, and the outer dimensions of the metal sheath are required to be 0.5 to 3 mm larger than the size of the workpiece;

[0084] (2) selecting a metal mesh 2 of corresponding thickness and making corresponding penetrating micropores in the metal mesh 2;

[0085] (3) placing the metal mesh 2 in the mold, and requiring that the sum of the distances between the metal mesh 2 and the top and bottom of the mold corresponds to the thickness of the aluminum-based composite plate;

[0086] (4) placing the selected base aluminum alloy material in an aluminizing furnace for melting, degassing the base aluminum alloy after it is melted, and then keeping it warm to obtain a molten aluminum alloy, and finally injecting the molten aluminum alloy into a mold, and before injecting the molten aluminum alloy, placing a mixed powder on the metal in the mold in advance, and allowing the molten aluminum alloy and the mixed powder injected into the mold to pass through the penetrating micropores on the metal mesh 2 under vibration to obtain a blank;

[0087] (5) placing the blank in a metal sheath and sealing the metal sheath;

[0088] (6) The sealed metal sheath is heated and vacuumized during the heating process; the specific vacuum degassing process parameters are: degassing temperature is 550°C, vacuum degree is 1X10 -4 Pa, the degassing time is 10 hours;

[0089] (7) The vacuum-treated metal sheath is placed in a hot pressing device for hot pressing, so that the aluminum alloy surface layer 1 above the metal mesh 2 and the aluminum alloy base layer 3 below are hot-pressed and fused into one through the connecting column penetrating the micropores; wherein the hot pressing treatment is forging; the forging treatment method is to place the vacuum-treated metal sheath in a forging machine for forging and rolling. During the hot isostatic pressing process, the specific hot isostatic pressing process parameters are: hot isostatic pressing temperature is 650°C, pressure is 200MPa, and heat preservation and pressure holding time is 3 to 5 hours.

[0090] (8) The metal sheath after the hot pressing treatment is taken out from the hot pressing equipment, cooled to room temperature, and then the metal sheath is removed to obtain a finished aluminum-based composite plate of the desired shape and size. Example 7

[0091] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which differs from the embodiment 1 in that: the metal mesh 2 is a copper alloy mesh, and is provided with a plurality of evenly spaced penetrating micropores in the metal mesh 2, the penetrating micropores being a waist-shaped structure, the thickness of the metal mesh 2 being 10 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both a mixture of an aluminum alloy material and a functional material, the aluminum alloy material and the functional material being mixed in a dosage ratio of 10:1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm, and the functional material is titanium zirconium powder.

[0092] The preparation method of the aluminum-based composite plate described in this embodiment is the same as that of Embodiment 1. Example 8

[0093] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which differs from the embodiment 2 in that: the metal mesh 2 is made of stainless steel mesh, and is provided with a plurality of evenly spaced penetrating micropores in the metal mesh 2, the penetrating micropores are of a square structure, the thickness of the metal mesh 2 is 10 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both a mixture of aluminum alloy material and functional material, the aluminum alloy material and the functional material are mixed in a dosage ratio of 8:1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm, and the functional material is made of copper powder.

[0094] The preparation method of the aluminum-based composite plate described in this embodiment is the same as that of Embodiment 2. Example 9

[0095] The present embodiment provides a lightweight and high-strength aluminum-based composite plate, which differs from the embodiment 3 in that: the metal mesh 2 is made of a titanium alloy mesh, and is provided with a plurality of evenly spaced penetrating micropores in the metal mesh 2, the penetrating micropores being a circular structure, the thickness of the metal mesh 2 being 10 mm, and the aluminum alloy base layer 3 and the aluminum alloy surface layer 1 are both a mixture of an aluminum alloy material and a functional material, the aluminum alloy material and the functional material being mixed in a dosage ratio of 5:1 to form a mixture, wherein the particle size of the mixture is controlled within 200 μm, and the functional material is made of aluminum powder.

[0096] The preparation method of the aluminum-based composite plate described in this embodiment is the same as that of Embodiment 3.

[0097] When the aluminum-based composite plate described in the utility model is used, in a specific application process, a metal mesh 2 is added to the aluminum-based composite plate, and the metal mesh 2 extends to the outside of the aluminum alloy base layer 3 and the aluminum alloy surface layer 1. The metal mesh 2 is connected with the titanium alloy product in the existing products, thereby solving the welding difficulty problem between the existing titanium alloy material and the aluminum alloy material. At the same time, it is also convenient to process and manufacture in the aluminum alloy base layer 3, so as to meet the needs of manufacturing connecting blocks of the required shape on the aluminum alloy panel, thereby meeting the product use requirements.

[0098] Other details of the present invention are all conventional techniques known to those skilled in the art.

[0099] The protection scope of the utility model is not limited to the technical solutions disclosed in the specific implementation methods. The above description is only a preferred implementation method of the utility model and does not limit the utility model. Any minor modifications, equivalent substitutions and improvements made based on the technical solutions of the utility model should be included in the protection scope of the technical solutions of the utility model.

Claims

1. A lightweight and high-strength aluminum-based composite panel, characterized in that: The aluminum-based composite plate includes an aluminum alloy base layer, a metal mesh and an aluminum alloy surface layer. A connecting column is arranged in the metal mesh. The aluminum alloy base layer and the aluminum alloy surface layer are combined into an integrated structure through the connecting column in the metal mesh.

2. A lightweight and high-strength aluminum-based composite panel according to claim 1, characterized in that: The metal mesh is any one of titanium alloy mesh, zirconium alloy mesh, nickel-based alloy mesh, copper alloy mesh, molybdenum alloy mesh, niobium alloy mesh, tantalum alloy mesh or stainless steel mesh, and a plurality of evenly spaced penetrating micropores are provided in the metal mesh, the connecting column is located in the penetrating micropores, the aluminum alloy base layer and the aluminum alloy surface layer are composited into an integrated structure through the connecting column in the penetrating micropores, and the composite method is forging or hot pressing deal with The connecting column is used to absorb the internal stress generated during the composite process due to the different thermal expansion coefficients between the aluminum alloy base layer, the aluminum alloy surface layer and the metal mesh, so as to reduce deformation.

3. A lightweight and high-strength aluminum-based composite panel according to claim 2, characterized in that: The penetrating micropores in the metal mesh are any one of circular, square, elliptical or waist-shaped structures.

4. The lightweight and high-strength aluminum-based composite panel according to claim 3, characterized in that: The thickness of the metal mesh is 0.05-10 mm.

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