A method for preparing a layered aluminum-aluminum-based composite material plate
By making support holes on the inner plate of aluminum-aluminum matrix composite material plate through multi-layer pressing and heat treatment process, the problem of poor mechanical properties in the existing technology is solved, and the preparation of high stiffness, low cost and high toughness plate is achieved.
Patent Information
- Application Number
- CN202411807270.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2044-12-10
AI Technical Summary
Existing technology is unable to make support holes inside layered aluminum-aluminum matrix composite materials, resulting in poor mechanical properties of the plates.
An inner mold is made in a mold through a multi-layer pressing process and TiB2 powder and TiC particles are added. After pressing into a semi-finished product, support holes are opened on the inner plate, and the finished product is made by combining heat treatment and polishing.
The stiffness and toughness of the plate are improved, the raw material consumption and production cost are reduced, the tensile strength and wear resistance are enhanced, and the support holes have good stability at high temperatures.
Smart Images
Figure CN119609121B_ABST
Abstract
Description
Technical Field
[0001] The present 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 composite sheets are made by laminating aluminum and aluminum-based composite materials through a specific process. Aluminum-based composites typically use aluminum or aluminum alloys as a matrix, reinforced with ceramic particles, carbon fibers, and other materials to create novel materials with high strength, hardness, excellent toughness, and fatigue resistance. The layered structure allows these sheets to fully utilize the performance characteristics of both aluminum and aluminum-based composites while maintaining their lightweight advantages.
[0003] The production process for layered aluminum-aluminum composite sheets typically involves lamination and hot pressing, followed by cutting, grinding, and polishing of the semi-finished product to produce the finished product. Providing a number of uniformly distributed support holes within the sheet helps disperse and resist external forces, thereby improving the overall stability of the sheet. However, existing preparation methods often only produce solid aluminum-based composite sheets and are unable to create internal support holes, resulting in poor mechanical properties.
[0004] In summary, addressing the problem that existing preparation methods often only produce solid aluminum-based composite sheets and cannot create support holes within the sheets, resulting in poor mechanical properties, has become a pressing challenge in the field. Therefore, it is necessary to provide a method for preparing layered aluminum-aluminum-based composite sheets that can create support holes within the sheets 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, its pressing process is divided into multi-layer pressing, and then a number 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 produce the outer mold and inner mold of the specified shape and size.
[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: mixing the raw materials for 10-15 minutes to obtain a mixture.
[0010] S4, pressing the mixture: put 2 / 3 of the mixture into the finished outer mold twice, and press them separately through a press 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 through a press 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: The semi-finished products are heat treated, cut, ground and polished 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 one of the shapes of triangle, rectangle, pentagon or hexagon.
[0014] Furthermore, in S2, the aluminum matrix powder is selected from either pure aluminum powder or aluminum alloy powder.
[0015] Furthermore, in S3, the mixture is also mixed with TiC particles accounting for 10-15% by mass.
[0016] Furthermore, in S4, the ambient temperature during pressing is 380-440° C., and the ambient pressure during pressing is 100-120 MPa.
[0017] Furthermore, 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] Furthermore, 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 one of the shapes of triangle, rectangle, pentagon or 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 increasing the rigidity of the plate and improving 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. Due to the presence of several supporting holes inside, the aluminum-based composite material plate produced by the present invention consumes less raw materials than the solid aluminum-based composite material plate produced by the prior art, effectively reducing the production cost. In addition, the finished product is lighter and more convenient to transport and install, effectively reducing the transportation and installation costs, thereby improving economic benefits.
[0023] 3. The aluminum-based composite material sheet produced by the present invention significantly improves 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. This allows the inner plate to remain stable during the pressing process when support holes are formed in the inner plate, ensuring the shape of the support holes. Furthermore, the excellent high-temperature stability of TiB2 further ensures that the support holes remain stable during the calcination process, allowing the entire sheet to maintain good mechanical properties after calcination. The addition of TiC particles can refine the grain size of the aluminum matrix powder, improve mixing uniformity, and thus enhance 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, and 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 provided on the base, and a first slider is slidably engaged in the slide groove, the top of the first slider is fixedly connected to a slide rail, and a second slider is slidably engaged in the slide rail, and the top of the second slider is rotatably engaged with a gear ring, and the slide rail is staggered and perpendicular to the slide groove and the gear ring; a guide groove is provided 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 engages 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 engaged above the processing table; the gear ring is any one of circular, elliptical, rectangular or triangular shapes.
[0025] Beneficial Effects: The operator places the unprocessed mold on the processing table and controls the operation of the driver through the controller. The driver's output shaft drives the gear to rotate, which in turn drives the gear ring to move, and then drives the processing table to move. In conjunction with the rotation and feed of the turning tool, the turning tool can process various positions of the mold, making molds of different shapes and sizes. By selecting gear rings of different shapes and sizes, molds of different shapes and sizes can be produced.
[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 set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 Flowchart of the 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 an embodiment of the present invention.
[0032] Figure 4 Schematic diagram of the installation of the layered aluminum-aluminum-based composite material plate in an embodiment of the present invention.
[0033] Figure 5 2 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] Example 1:
[0037] like Figure 1 and Figure 4 As shown, a method for preparing a layered aluminum-aluminum matrix composite material plate comprises the following steps:
[0038] S1. Mold Processing: Using a lathe and processing equipment, outer and inner molds of specified shapes and sizes are produced according to the finished product's production requirements. The inner molds are each machined with several mold blocks, each in a triangular, rectangular, pentagonal, or hexagonal shape. In this embodiment, a rectangular shape is used.
[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, Mixture Pressing: 2 / 3 of the mixture is placed into the finished outer mold in two batches and pressed separately to form two sets of outer green bodies. The remaining 1 / 3 of the mixture is placed into the finished inner mold and pressed separately to form one set of inner green bodies. The two sets of outer green bodies are then placed on the upper and lower sides of the inner green body and pressed together to form the semi-finished green body. The pressing process is carried out at an ambient temperature of 440°C and a pressure of 120 MPa.
[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: The semi-finished product is heat treated, cut, ground, and polished according to the production requirements of the finished product to obtain the finished product. The heat treatment of the semi-finished product may include one or more of surface hardening, aging, annealing, normalizing, quenching, tempering, and quenching and tempering. In this embodiment, annealing is used to treat the semi-finished product. Annealing can eliminate residual stress within the semi-finished product and improve the stability of the finished product.
[0045] The finished product includes an inner plate 13 and several outer plates 14. 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. There are several support holes evenly opened on the inner plate 13. The support holes are in any shape of 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, the unprocessed mold is placed in the processing unit, and the lathe is started to produce the outer and inner molds of the specified shapes and sizes according to the production requirements of the finished product. For example, if the requirement is to produce a layered aluminum-aluminum matrix composite sheet that is 1 meter long, 0.5 meters wide, and 0.03 meters thick with several rectangular support holes, the machine will produce a set of outer mold plates with processing grooves 1 meter long, 0.5 meters wide, and 0.01 meters deep, and a set of inner mold plates with several rectangular model blocks 1 meter long, 0.5 meters wide, and 0.01 meters deep.
[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 there are several rectangular support holes 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 stiffness 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] 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. The finished product is also lighter and more convenient to transport and install, effectively reducing the transportation and installation costs, thereby improving 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] Example 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 to the frame 2, the front end of the frame 2 is bolted to the driving member, and the output shaft of the driving member is coaxially bolted to the gear 4; the bottom of the gear 4 is bolted to the guide rod 5; a slide groove is opened on the base 1, and a first slider 6 is slidably fitted in the slide groove, and the top of the first slider 6 is bolted to the slide rail 7, and a second slider 8 is slidably fitted in the slide rail 7, and a gear ring 9 is rotatably fitted on the top of the second slider 8, and the slide rail 7 is staggered and perpendicular to the slide groove and the gear ring 9; a guide groove is opened on the gear ring 9 to slide 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 to a connecting rod 10; the connecting rod 10 passes through the middle of the gear ring 9 and is rotatably fitted with the second slider 8; the top of the connecting rod 10 is bolted to a processing table 11; the processing table 11 is parallel to the gear ring 9; a turning tool 12 is slidably fitted 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 and controls the servo motor 3 through the controller. The servo motor 3's output shaft drives the gear 4 to rotate. Because the gear 4 and the gear ring 9 are meshed, the gear 4 drives the gear ring 9 to move, which in turn drives the processing table 11 to move. In conjunction with the rotation and feed of the turning tool 12, the turning tool 12 can process various positions of the mold, producing molds of different shapes and sizes. Choosing different shapes and sizes of gear rings 9 allows the production of molds of different shapes and sizes.
[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 back and forth and drive the connecting rod 10 to move back and forth, thereby driving the processing table 11 to move back and forth. 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 back and forth, and the second slider 8 will push the slide rail 7, so that the first slider 6 slides back and forth 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] During this process, since the guide rod 5 slides with the guide groove and the guide rod 5 is fixedly connected to the gear 4 with bolts, the gear 4 and the gear ring 9 will remain in 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] Example 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 clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present 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: according to the production requirements of the finished product, use lathes and processing equipment to produce the outer mold and inner mold of the specified shape and size; 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 prepared outer mold twice, and each is pressed by a pressing machine to obtain two sets of outer green bodies; the remaining 1 / 3 of the mixture is placed into the prepared inner mold, and is pressed by a pressing machine to obtain a set of inner green bodies; the two sets of outer green bodies are then 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 4-8 hours to obtain a semi-finished product; S6, semi-finished product processing: heat treatment, cutting, grinding and polishing of the semi-finished products according to the production requirements of the finished products to obtain the finished products; In S1, a plurality of model blocks are processed on the inner mold, and the model blocks are in any shape of triangle, rectangle, pentagon or hexagon; In S6, 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); 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.
2. The method for preparing a layered aluminum-aluminum-based composite material plate according to claim 1, characterized in that: In S2, the aluminum matrix powder is selected from either pure aluminum powder or aluminum alloy powder.
3. The method for preparing a layered aluminum-aluminum-based composite material plate according to claim 2, characterized in that: In S3, TiC particles accounting for 10-15% by mass are also mixed into the mixture.
4. The method for preparing a layered aluminum-aluminum-based composite material plate according to claim 3, characterized in that: In S4, the ambient temperature during pressing is 380-440° C., and the ambient pressure during pressing is 100-120 MPa.
5. The method for preparing a layered aluminum-aluminum-based composite material plate according to claim 4, 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.
6. The method for preparing a layered aluminum-aluminum-based composite material plate according to claim 5, characterized in that: In S1, the processing device includes 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 with the top of the second slider (8), and the slide rail (7) is vertically offset from the slide groove and the gear ring (9); 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) is meshed with the gear (4), and 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 engaged 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 engaged above the processing table (11); the gear ring (9) is in any one of the shapes of a circle, an ellipse, a rectangle or a triangle.
7. The method for preparing a layered aluminum-aluminum-based composite material plate according to claim 6, characterized in that: Both sides of the slide groove and the slide rail (7) are fixedly connected to limit blocks (15).