Preparation method of layered aluminum-aluminum matrix composite plate

Abstract

The invention relates to the technical field of material processing, in particular to a preparation method of a layered aluminum-aluminum matrix composite plate, which comprises the following steps: S1, mold processing: manufacturing an outer mold and an inner mold with specified shapes and sizes by using a lathe and a processing device according to the manufacturing requirements of a finished product; s2, raw material preparation, wherein pure TiB2 powder and aluminum matrix powder are weighed; s3, mixing the raw materials: mixing and stirring the raw materials for 10-15 minutes to obtain a mixture; s4, pressing the mixture: putting 2 / 3 of the mixture into a manufactured outer mold in two times, and pressing the mixture through a pressing machine to obtain an outer green body; putting the rest 1 / 3 of the mixture into a manufactured inner mold to obtain an inner green body; placing the outer blank on the upper side and the lower side of the inner blank, and pressing the outer blank, the inner blank and the outer blank to obtain a semi-finished blank; s5, calcining the blank: calcining the semi-finished blank for 4-8 hours to obtain a semi-finished product; and S6, semi-finished product processing: processing the prepared semi-finished product. The logic is complete, and the quality of finished products can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of material processing, and in particular to a method for preparing a layered aluminum-aluminum-based composite material plate. Background Art

[0002] Laminated aluminum-aluminum-based composite sheet is a sheet made of aluminum and aluminum-based composite materials laminated by a specific process. Aluminum-based composite materials are usually based on aluminum or aluminum alloys, and are made by adding ceramic particles, carbon fiber and other reinforcements to form a new type of material with high strength, high hardness, good toughness and fatigue resistance. The design of the layered structure enables this sheet to fully utilize the performance characteristics of aluminum and aluminum-based composite materials while maintaining the advantage of lightweight.

[0003] The preparation process of layered aluminum-aluminum-based composite material plates is usually mainly stacking and hot pressing, and then the semi-finished products are cut, ground and polished to obtain finished products. Providing a number of uniform support holes inside the plate can help the plate to disperse and resist external forces, thereby improving the overall stability of the plate. However, the preparation method in the prior art can often only produce solid aluminum-based composite material plates, and it is impossible to make support holes inside the plate, resulting in poor mechanical properties of the produced plate.

[0004] In summary, how to solve the problem that the preparation methods in the prior art can only produce solid aluminum-based composite material plates, and cannot produce support holes inside the plates, resulting in poor mechanical properties of the produced plates has become a difficult problem that needs to be solved urgently in the current field. Therefore, it is necessary to propose a preparation method for a layered aluminum-aluminum-based composite material plate that can produce support holes inside the plate and improve the mechanical properties of the finished product. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a method for preparing a layered aluminum-aluminum-based composite material plate. By improving the production steps of the aluminum-based composite material plate, the pressing process is divided into multi-layer pressing, and then a plurality of support holes are made inside the plate, thereby improving the mechanical properties of the finished product.

[0006] In order to achieve the above object, the technical solution of the present invention is as follows: A method for preparing a layered aluminum-aluminum-based composite material plate comprises the following steps:

[0007] S1, mold processing: according to the production requirements of the finished product, use lathes and processing equipment to make outer molds and inner molds of specified shapes and sizes.

[0008] S2, raw material preparation: quantitatively weigh pure TiB2 powder and aluminum matrix powder according to a mass ratio of 1-4:20.

[0009] S3, raw material mixing: the raw materials are mixed and stirred for 10-15 minutes to obtain a mixture.

[0010] S4, pressing the mixture: put 2 / 3 of the mixture into the manufactured outer mold twice, and press them respectively by a pressing machine to obtain two groups of outer green bodies; then put the remaining 1 / 3 of the mixture into the manufactured inner mold, and press them by a pressing machine to obtain a group of inner green bodies; then place the two groups of outer green bodies on the upper and lower sides of the inner green body respectively, and press the three together to obtain a semi-finished green body.

[0011] S5, green body calcination: the semi-finished green body is placed in a 500-650°C environment and calcined for 4-8 hours to obtain a semi-finished product.

[0012] S6, semi-finished product processing: heat treatment, cutting, grinding and polishing are carried out on the semi-finished products according to the production requirements of the finished products to obtain the finished products.

[0013] Furthermore, in S1, a plurality of model blocks are processed on the inner mold, and the model blocks are in any shape of a triangle, a rectangle, a pentagon or a hexagon.

[0014] Furthermore, in S2, the aluminum matrix powder is selected from any one of pure aluminum powder or aluminum alloy powder.

[0015] Furthermore, in S3, the mixture is also mixed with TiC particles accounting for 10-15% by weight.

[0016] Furthermore, in S4, the ambient temperature during pressing is 380-440° C., and the ambient pressure during pressing is 100-120 MPa.

[0017] Further, in S6, the heat treatment of the semi-finished product adopts one or more of surface quenching, aging treatment, annealing, normalizing, quenching, tempering and tempering.

[0018] Further, in S6, the finished product includes an inner panel and a plurality of outer panels, wherein the outer panels are respectively located on the upper and lower sides of the inner panel and are integrally formed with the inner panel.

[0019] Furthermore, a plurality of support holes are evenly opened on the inner plate, and the support holes are in any shape of a triangle, a rectangle, a pentagon or a hexagon.

[0020] The above scheme has the following beneficial effects:

[0021] 1. Compared with the solid aluminum-based composite material plate in the prior art, the aluminum-based composite material plate produced by the present invention has a plurality of support holes inside, and the plurality of support holes form a honeycomb or mesh structure, which has the function of reinforcing ribs, effectively increases the rigidity of the plate, and improves the plate's ability to resist deformation. When the plate is impacted by external force, it can better absorb energy through the honeycomb or mesh inner plate, thereby improving the overall toughness of the plate, thereby greatly improving the mechanical properties of the aluminum-based composite material plate produced by the present invention.

[0022] 2. Since the aluminum-based composite material plate produced by the present invention has several supporting holes inside, it consumes less raw materials than the solid aluminum-based composite material plate produced by the prior art, effectively reducing the production cost, and the finished product is lighter and more convenient to transport and install, effectively reducing the transportation and installation costs, thereby improving the economic benefits.

[0023] 3. The aluminum-based composite material plate produced by the present invention can significantly improve the hardness, tensile strength and wear resistance of the aluminum-based composite material by adding an appropriate amount of TiB2 powder to the aluminum-based powder, so that when the support hole is made on the inner plate, the inner plate can still remain stable during the pressing process to ensure the shape of the support hole; at the same time, TiB2 has excellent high-temperature stability, which further ensures that the support hole can remain stable during the calcination process, and also enables the entire plate to maintain good mechanical properties after calcination. The addition of TiC particles can refine the grains of the aluminum-based powder, improve the mixing uniformity, and thus improve the quality of the finished product.

[0024] Further, in S1, the processing device includes a base, the top of the base is fixedly connected to a frame, the end of the frame away from the base is fixedly connected to a driving member, the output shaft of the driving member is coaxially fixedly connected to a gear; the bottom of the gear is fixedly connected to a guide rod; a slide groove is opened on the base, a first slider is slidably fitted in the slide groove, a slide rail is fixedly connected to the top of the first slider, a second slider is slidably fitted in the slide rail, a gear ring is rotatably fitted on the top of the second slider, the slide rail is staggered and vertically with the slide groove and the gear ring; a guide groove is opened on the gear ring to slide with the guide rod; the inner wall of the gear ring is meshed with the gear, and a connecting rod is fixedly connected to the middle of the gear ring; the connecting rod passes through the middle of the gear ring and rotatably fits with the second slider; the top of the connecting rod is fixedly connected to a processing table; the processing table is parallel to the gear ring; a turning tool is slidably fitted above the processing table; the gear ring is any one of circular, elliptical, rectangular or triangular shapes.

[0025] Beneficial effect: The operator places the unprocessed mold on the processing table, controls the operation of the driving part through the controller, and the output shaft of the driving part drives the gear to rotate, the gear drives the gear ring to move, and then drives the processing table to move, and cooperates with the rotation and feed of the turning tool, so that the turning tool can process various positions of the mold to produce molds of different shapes and sizes. And choosing gear rings of different shapes and sizes can produce molds of different shapes and sizes.

[0026] Furthermore, both sides of the slide groove and the slide rail are fixedly connected with limit blocks.

[0027] Beneficial effect: The limit block can prevent the first slider and the second slider from slipping during movement.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a flow chart of a method for preparing a layered aluminum-aluminum-based composite material plate in an embodiment of the present invention.

[0030] Figure 2 It is an axonometric view of the processing device in an embodiment of the present invention.

[0031] Figure 3 It is a side view of the processing device in the embodiment of the present invention.

[0032] Figure 4 It is a schematic diagram of the installation of the layered aluminum-aluminum-based composite material plate in an embodiment of the present invention.

[0033] Figure 5 1 is a top view of the gear ring in an embodiment of the present invention.

[0034] The figure marks in the drawings of the specification include: 1. base; 2. frame; 3. servo motor; 4. gear; 5. guide rod; 6. first slider; 7. slide rail; 8. second slider; 9. gear ring; 10. connecting rod; 11. processing table; 12. turning tool; 13. inner plate; 14. outer plate; 15. limit block. DETAILED DESCRIPTION

[0035] The following is further described in detail through specific implementation methods:

[0036] Embodiment 1:

[0037] like Figure 1 and Figure 4 As shown, a method for preparing a layered aluminum-aluminum-based composite material plate comprises the following steps:

[0038] S1, mold processing: according to the production requirements of the finished product, the outer mold and the inner mold of the specified shape and size are produced by using a lathe and a processing device. The inner mold is processed with a plurality of model blocks, and the model blocks are in any shape of a triangle, rectangle, pentagon or hexagon. In this embodiment, a rectangle is selected.

[0039] S2, raw material preparation: pure TiB2 powder and aluminum matrix powder are quantitatively weighed in a mass ratio of 3:20. The aluminum matrix powder can be any one of pure aluminum powder or aluminum alloy powder. In this embodiment, aluminum alloy powder is used.

[0040] The mixture also contains 15% by weight of TiC particles. The addition of TiC particles can refine the grains of the aluminum matrix powder, improve the mixing uniformity, and thus improve the quality of the finished product.

[0041] S3, raw material mixing: the raw materials are mixed and stirred for 15 minutes to obtain a mixture.

[0042] S4, pressing the mixture: put 2 / 3 of the mixture into the finished outer mold twice, and press them respectively by a press machine to obtain two groups of outer green bodies; then put the remaining 1 / 3 of the mixture into the finished inner mold, and press them by a press machine to obtain a group of inner green bodies; then place the two groups of outer green bodies on the upper and lower sides of the inner green body respectively, and press the three together to obtain a semi-finished green body. The ambient temperature during pressing is 440℃, and the ambient pressure during pressing is 120MPa.

[0043] S5, green body calcination: the semi-finished green body is placed in a 650°C environment and calcined for 8 hours to obtain a semi-finished product.

[0044] S6, semi-finished product processing: heat treatment, cutting, grinding and polishing are performed on the semi-finished product according to the production requirements of the finished product to obtain the finished product. The heat treatment of the semi-finished product adopts one or more of surface quenching, aging treatment, annealing, normalizing, quenching, tempering and quenching and tempering. In this embodiment, annealing is used to treat the semi-finished product. Annealing can eliminate the residual stress inside the semi-finished product and improve the stability of the finished product.

[0045] The finished product includes an inner plate 13 and a plurality of outer plates 14, wherein the outer plates 14 are respectively located on the upper and lower sides of the inner plate 13 and are integrally formed with the inner plate 13. The inner plate 13 is evenly provided with a plurality of support holes, each of which is in any shape of a triangle, rectangle, pentagon or hexagon. Figure 4 As shown, the support holes in this embodiment are all rectangular.

[0046] The specific implementation process is as follows:

[0047] First, place the unprocessed mold in the processing device, start the lathe, and make the outer mold and inner mold of the specified shape and size according to the production requirements of the finished product. For example, if a layered aluminum-aluminum-based composite material plate with a length of 1 meter, a width of 0.5 meters, a thickness of 0.03 meters and a number of rectangular support holes is required to be produced; a set of outer templates with a processing groove of 1 meter long, 0.5 meters wide and 0.01 meters deep and a set of inner templates with a length of 1 meter, a width of 0.5 meters and a depth of 0.01 meters and a number of rectangular model blocks will be processed.

[0048] like Figure 4 As shown, 2 / 3 of the mixture is placed into the finished outer mold twice to obtain two groups of outer blanks; the remaining 1 / 3 of the mixture is placed into the finished inner mold to obtain a semi-finished blank; after calcination and processing, the finished product can be obtained. The surfaces on both sides of the finished product are smooth and flat, and a number of rectangular support holes are processed inside.

[0049] Compared with the solid aluminum-based composite material plate in the prior art, the aluminum-based composite material plate produced by the present invention has a plurality of support holes inside, and the plurality of support holes form a honeycomb or mesh structure, which effectively increases the rigidity of the plate and improves the plate's ability to resist deformation. When the plate is impacted by external force, it can better absorb energy through the honeycomb or mesh inner plate 13, thereby improving the overall toughness of the plate, and further greatly improving the mechanical properties of the aluminum-based composite material plate produced by the present invention.

[0050] The aluminum-based composite material plate produced by the present invention has a plurality of supporting holes inside, so it consumes less raw materials than the solid aluminum-based composite material plate produced by the prior art, effectively reducing the production cost, and the finished product has a lower weight, which is more convenient for transportation and installation, effectively reducing the transportation and installation costs, thereby improving the economic benefits.

[0051] The aluminum-based composite material plate produced by the present invention can significantly improve the hardness, tensile strength and wear resistance of the aluminum-based composite material by adding an appropriate amount of TiB2 powder to the aluminum matrix powder, so that when the support hole is made on the inner plate 13, the inner plate 13 can still remain stable during the pressing process to ensure the shape of the support hole; at the same time, TiB2 has excellent high-temperature stability, which further ensures that the support hole can remain stable during the calcination process, and also enables the entire plate to maintain good mechanical properties after calcination.

[0052] Embodiment 2:

[0053] like Figure 2 , Figure 3 and Figure 5As shown, the difference from the above embodiment is that the processing device includes a base 1, the top of the base 1 is bolted fixedly connected to the frame 2, the front end of the frame 2 is bolted fixedly connected to the driving member, the output shaft of the driving member is coaxially bolted fixedly connected to the gear 4; the bottom of the gear 4 is bolted fixedly connected to the guide rod 5; the base 1 is provided with a slide groove, in which a first slider 6 is slidably matched, the top of the first slider 6 is bolted fixedly connected to the slide rail 7, in which a second slider 8 is slidably matched, and the top of the second slider 8 is rotatably matched with a gear ring 9, and the slide rail 7 is vertically offset from the slide groove and the gear ring 9; the gear ring 9 is provided with a guide groove slidably matched with the guide rod 5; the inner wall of the gear ring 9 is meshed with the gear 4, and the middle part of the gear ring 9 is bolted fixedly connected to a connecting rod 10; the connecting rod 10 passes through the middle part of the gear ring 9 and is rotatably matched with the second slider 8; the top of the connecting rod 10 is bolted fixedly connected to a processing table 11; the processing table 11 is parallel to the gear ring 9; a turning tool 12 is slidably matched above the processing table 11; the gear ring 9 is any one of a circular, elliptical, rectangular or triangular shape. In this embodiment, the driving member is a servo motor 3, and the gear ring 9 is elliptical.

[0054] The specific implementation process is as follows:

[0055] The operator places the unprocessed mold on the processing table 11, controls the servo motor 3 to run through the controller, and the output shaft of the servo motor 3 drives the gear 4 to rotate. Since the gear 4 and the gear ring 9 are meshed, the gear 4 drives the gear ring 9 to move, and then drives the processing table 11 to move, and cooperates with the rotation and feed of the turning tool 12, so that the turning tool 12 can process various positions of the mold to make molds of different shapes and sizes. By selecting gear rings 9 of different shapes and sizes, molds of different shapes and sizes can be made.

[0056] This embodiment takes the elliptical gear ring 9 as an example. Figure 2 As shown, during the processing, when the gear 4 rotates with the straight part of the gear ring 9, the gear ring 9 will move forward and backward and drive the connecting rod 10 to move forward and backward, thereby driving the processing table 11 to move forward and backward. At the same time, since the gear ring 9 slides with the second slider 8 and the connecting rod 10 rotates with the second slider 8, the gear ring 9 will drive the second slider 8 to move forward and backward, and the second slider 8 will push the slide rail 7, so that the first slider 6 slides forward and backward along the slide groove; when the gear 4 rotates with the curved part of the gear ring 9, the gear ring 9 will rotate and drive the connecting rod 10 to rotate, thereby driving the processing table 11 to rotate; at the same time, since the second slider 8 is limited by the slide rail 7 and the middle part of the gear ring 9, the gear ring 9 will drive the second slider 8 to slide along the slide rail 7; thereby, the gear ring 9 will slide and rotate with the gear 4, thereby driving the processing table 11 to move, so that the turning tool 12 can process various positions of the mold.

[0057] In this process, since the guide rod 5 and the guide groove are slidably matched and the guide rod 5 and the gear 4 are fixedly connected by bolts, the gear 4 and the gear ring 9 will remain in close contact, thereby improving the movement stability of the gear 4 and the gear ring 9.

[0058] By making molds of different shapes and sizes, a good foundation can be provided for the subsequent production of layered aluminum-aluminum-based composite materials.

[0059] Embodiment 3:

[0060] like Figure 2 and Figure 3 As shown, the difference from the above embodiment is that both sides of the slide groove and the slide rail 7 are fixedly connected with limit blocks 15 by bolts.

[0061] The specific implementation process is as follows: the limit block 15 can prevent the first slider 6 and the second slider 8 from slipping during the movement, thereby improving the stability of the device operation.

[0062] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for preparing a layered aluminum-aluminum-based composite material plate, characterized in that: The following steps are involved: S1, mold processing: use lathes and processing equipment to make outer molds and inner molds of specified shapes and sizes according to the production requirements of finished products; S2, raw material preparation: quantitatively weigh pure TiB2 powder and aluminum matrix powder according to a mass ratio of 1-4:20; S3, raw material mixing: mixing the raw materials for 10-15 minutes to obtain a mixture; S4, pressing the mixture: 2 / 3 of the mixture is placed into the manufactured outer mold twice, and pressed by a pressing machine respectively to obtain two groups of outer green bodies; the remaining 1 / 3 of the mixture is placed into the manufactured inner mold, and pressed by a pressing machine to obtain a group of inner green bodies; the two groups of outer green bodies are placed on the upper and lower sides of the inner green body respectively, and the three are pressed to obtain a semi-finished green body; S5, green body calcination: placing the semi-finished green body in a 500-650°C environment and calcining it for 4-8h to obtain a semi-finished product; S6, semi-finished product processing: heat treatment, cutting, grinding and polishing are carried out on the semi-finished products according to the production requirements of the finished products to obtain the finished products.

2. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 1, characterized in that: In S1, a plurality of model blocks are processed on the inner mold, and the model blocks are in any shape of a triangle, a rectangle, a pentagon or a hexagon.

3. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 2, characterized in that: In S2, the aluminum matrix powder is selected from pure aluminum powder or aluminum alloy powder.

4. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 3, characterized in that: In S3, the mixture is further mixed with TiC particles accounting for 10-15% by weight.

5. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 4, characterized in that: In S4, the ambient temperature during pressing is 380-440°C, and the ambient pressure during pressing is 100-120 MPa.

6. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 5, characterized in that: In S6, the heat treatment of the semi-finished product adopts one or more of surface quenching, aging treatment, annealing, normalizing, quenching, tempering and tempering.

7. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 6, characterized in that: In S6, the finished product comprises an inner plate (13) and a plurality of outer plates (14), wherein the outer plates (14) are respectively located on the upper and lower sides of the inner plate (13) and are integrally formed with the inner plate (13).

8. The method for preparing a layered aluminum-aluminum composite material sheet according to claim 7, characterized in that: A plurality of support holes are evenly formed on the inner plate (13), and the support holes are in any shape of a triangle, a rectangle, a pentagon or a hexagon.

9. The method for preparing the layered aluminum-aluminum-based composite material sheet according to claim 8, characterized in that: In S1, the processing device comprises a base (1), the top of the base (1) is fixedly connected to a frame (2); the frame (2) is fixedly connected to a driving member at one end away from the base (1), and the output shaft of the driving member is coaxially fixedly connected to a gear (4); the bottom of the gear (4) is fixedly connected to a guide rod (5); A slide groove is provided on the base (1), a first slider (6) is slidably engaged in the slide groove, a slide rail (7) is fixedly connected to the top of the first slider (6), a second slider (8) is slidably engaged in the slide rail (7), a gear ring (9) is rotatably engaged in the top of the second slider (8), the slide rail (7) and the slide groove and the gear ring (9) are all vertically staggered; a guide groove is provided on the gear ring (9) and is slidably engaged with the guide rod (5); The inner wall of the gear ring (9) meshes with the gear (4); a connecting rod (10) is fixedly connected to the middle of the gear ring (9); the connecting rod (10) passes through the middle of the gear ring (9) and is rotatably matched with the second slider (8); a processing table (11) is fixedly connected to the top of the connecting rod (10); the processing table (11) is parallel to the gear ring (9); a turning tool (12) is slidably matched above the processing table (11); the gear ring (9) is in any one of a circular, elliptical, rectangular or triangular shape.

10. The method for preparing a layered aluminum-aluminum-based composite material sheet according to claim 9, characterized in that: Both sides of the slide groove and the slide rail (7) are fixedly connected with limit blocks (15).

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