High-energy-absorbing aluminum alloy material for automobile bumper beam and heat treatment method

Abstract

The application belongs to the technical field of automobile anti-collision, and discloses a high-energy-absorbing aluminum alloy material for an automobile anti-collision beam, which comprises a mounting assembly, a fixing unit is fixedly installed on one side of the mounting assembly, the mounting assembly comprises a mounting plate, a fixing plate is fixedly installed on one side of the mounting plate, a rotating unit is arranged on one side of the fixing plate, a connecting unit is fixedly installed at the end of the mounting plate, the fixing unit comprises a fixing piece, a connecting reinforcing plate is fixedly installed between the fixing piece and the mounting plate, and the fixing piece is fixedly connected with the mounting plate. Through cooperation of the rotating shaft and the mounting block and other structures, the rotating shaft is rotated by using a tool, the rotating shaft drives the movable piece and the mounting block to move, so that the positions of the movable piece and the mounting block are adjusted, and then the fixing and mounting positions of the anti-collision beam can be quickly adjusted according to requirements of different automobiles, thereby reducing the complexity of design and manufacturing.

Description

Technical Field

[0001] This invention belongs to the field of automotive anti-collision technology, specifically a high-energy-absorbing aluminum alloy material for automotive anti-collision beams and a heat treatment method thereon. Background Technology

[0002] High-energy-absorbing aluminum alloy material used in automotive anti-collision beams, also known as buffer beams, is a type of aluminum alloy material specifically used for front and rear anti-collision beams of automobiles. Through its characteristics such as high energy absorption, lightweight, corrosion resistance and strong plasticity, it not only ensures collision safety but also improves the performance of automobiles, becoming an indispensable and important component in modern automotive safety design.

[0003] A patent application with publication number CN207328359U discloses a crash beam and an automobile, relating to the field of automotive technology. To solve the problem of low assembly efficiency of crash beams, the crash beam includes a main beam and an energy-absorbing box. The main beam is connected to the energy-absorbing box, and a positioning hook is provided on the side of the energy-absorbing box that is connected to the vehicle frame. The main beam is integrally formed from aluminum alloy material. The crash beam is applied to automobiles, which improves the assembly efficiency of the crash beam and reduces its weight.

[0004] However, the above-mentioned technical solutions still have shortcomings. The installation of anti-collision beams usually requires precise location and installation method. When installing anti-collision beams for automobiles, different automobiles require anti-collision beams of different sizes. Generally, the installation positioning of anti-collision beams needs to be customized, which increases the complexity of design and manufacturing. Therefore, it is necessary to improve them. Summary of the Invention

[0005] To address the issues raised in the background art, such as the need for different sizes of anti-collision beams for different automobiles and the generally needing to customize the installation and positioning of anti-collision beams, which increases the complexity of design and manufacturing, this invention provides a heat treatment method for high energy-absorbing aluminum alloy materials used in automotive anti-collision beams.

[0006] This invention provides the following technical solution: a high-energy-absorbing aluminum alloy material for automotive anti-collision beams and a heat treatment method, the steps of which are as follows: Step 1: Heat the aluminum alloy anti-collision beam profile or billet that has been homogenized and hot-extruded to 530°C to 550°C and hold it at this temperature for 60 to 180 minutes to allow the alloying elements to fully dissolve in the aluminum matrix. Then, perform rapid quenching to obtain a supersaturated solid solution. Step 2: After solution quenching, immediately transfer the workpiece to a heat treatment furnace or leave it at room temperature for no more than 24 hours, heat it to 90°C to 120°C, and hold it for 2 to 8 hours. Subsequent aging will provide uniform nucleation points. Step 3: Heat the pre-aged workpiece to 150°C to 170°C and hold for 8 to 24 hours to allow the material to reach its peak strength.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-energy-absorbing aluminum alloy material for automotive anti-collision beams, comprising an installation assembly, a fixing unit fixedly installed on one side of the installation assembly, the installation assembly comprising an installation plate, a fixing plate fixedly installed on one side of the installation plate, a rotating unit provided on one side of the fixing plate, a connecting unit fixedly installed at the end of the installation plate, the fixing unit comprising a fixing member, a connecting reinforcing plate fixedly installed between the fixing member and the installation plate, and the fixing member being fixedly connected to the installation plate.

[0008] Preferably, the rotating unit includes a rotating shaft, the rotating shaft is movably connected to the middle of the fixed plate, a movable component is movably connected to the outer wall of the rotating shaft, and an mounting block is fixedly installed on one side of the movable component.

[0009] Preferably, a limiting ring is provided in the middle of the rotating shaft, a limiting groove is provided in the middle of the fixed plate, and the limiting ring is fixedly connected to the rotating shaft.

[0010] Preferably, the connecting unit includes a connecting spring, a connecting plate is fixedly mounted on the end of the connecting spring, and an mounting component is fixedly mounted on the side of the connecting plate near the rotating shaft.

[0011] Preferably, a limiting plate is provided at the end of the connecting spring away from the connecting plate, and the limiting plate is movably connected to the fixing plate, and a groove is provided on one side of the connecting plate.

[0012] Preferably, the rotating shaft has a positioning groove at its end near the mounting component and is movably connected to the mounting component.

[0013] Preferably, the connecting reinforcing plate is a corrugated plate, and the top and bottom surfaces of the fastener have several through holes.

[0014] Preferably, both ends of the rotating shaft are provided with reciprocating threads, and the rotating shaft is threadedly connected to the moving part.

[0015] Preferably, the mounting block has fixing holes on both sides, and the mounting block is movably connected to the fixing plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes a combination of a rotating shaft and mounting blocks. By using a tool to rotate the rotating shaft, the rotating shaft moves the movable parts and mounting blocks, thereby adjusting their positions. This allows for quick adjustments based on the different requirements of various vehicles for the fixed installation position of the crash beam, thus reducing the complexity of design and manufacturing.

[0017] This invention utilizes a combination of a connecting reinforcement plate and a mounting plate. The connecting reinforcement plate is fixedly installed between the mounting plate and the fastener. The corrugated plate of the connecting reinforcement plate can gradually deform and absorb energy during a vehicle collision, thus mitigating the impact force and reducing the damage to the vehicle and its occupants. Furthermore, the corrugated plate will first undergo compression deformation along the corrugation direction during the collision, which can effectively reduce the local compression and deformation of the vehicle body and prevent the impact force from concentrating on other important parts of the vehicle body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram showing the structural fit between the mounting plate and the fixing plate of the present invention; Figure 4 This is a schematic diagram showing the structural fit between the fixed plate and the rotating unit of the present invention; Figure 5 This is a schematic diagram showing the structural fit between the connecting unit and the fixing plate of the present invention.

[0019] In the diagram: 1. Mounting component; 11. Mounting plate; 12. Fixing plate; 13. Rotating unit; 132. Rotating shaft; 133. Moving part; 134. Mounting block; 14. Connecting unit; 141. Connecting spring; 142. Connecting plate; 143. Mounting component; 2. Fixing unit; 21. Fixing component; 22. Connecting reinforcing plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] This invention provides a heat treatment method for high energy-absorbing aluminum alloy material used in automotive anti-collision beams, comprising the following steps: Step 1: Heat the aluminum alloy anti-collision beam profile or billet that has been homogenized and hot-extruded to 530°C to 550°C and hold it at this temperature for 60 to 180 minutes to allow the alloying elements to fully dissolve in the aluminum matrix. Then, perform rapid quenching to obtain a supersaturated solid solution. Step 2: After solution quenching, immediately transfer the workpiece to a heat treatment furnace or leave it at room temperature for no more than 24 hours, heat it to 90°C to 120°C, and hold it for 2 to 8 hours. Subsequent aging will provide uniform nucleation points. Step 3: Heat the pre-aged workpiece to 150°C to 170°C and hold for 8 to 24 hours to allow the material to reach its peak strength.

[0022] like Figures 1 to 5 As shown, the present invention provides a high energy-absorbing aluminum alloy material for automotive anti-collision beams, including an installation assembly 1. A fixing unit 2 is fixedly installed on one side of the installation assembly 1. The installation assembly 1 includes an installation plate 11. A fixing plate 12 is fixedly installed on one side of the installation plate 11. A rotating unit 13 is provided on one side of the fixing plate 12. A connecting unit 14 is fixedly installed at the end of the installation plate 11. The fixing unit 2 includes a fixing member 21. A connecting reinforcing plate 22 is fixedly installed between the fixing member 21 and the installation plate 11. The fixing member 21 is fixedly connected to the installation plate 11. The rotating unit 13 includes a rotating shaft 132. The rotating shaft 132 is movably connected to the middle of the fixing plate 12. A movable member 133 is movably connected to the outer wall of the rotating shaft 132. An installation block 134 is fixedly installed on one side of the movable member 133. The connecting unit 14 includes a connecting spring 141. A connecting plate 142 is fixedly installed at the end of the connecting spring 141. An installation member 143 is fixedly installed on the side of the connecting plate 142 near the rotating shaft 132.

[0023] The above solution involves coordinating the fixing unit 2 and the rotating unit 13 to adjust the positions of the movable part 133 and the mounting block 134 according to the dimensions of the vehicle. Pulling the connecting plate 142 causes the mounting part 143 to disengage from the rotating shaft 132. Then, the tool is connected to the positioning groove at the end of the rotating shaft 132. Rotating the connecting tool causes the rotating shaft 132 to rotate, which in turn moves the movable part 133 and the mounting block 134, thereby adjusting their positions. This allows for quick and easy installation of the anti-collision beam according to different vehicle dimensions. The installation position requirements were adjusted to reduce the complexity of design and manufacturing. The connecting reinforcement plate 22 is fixedly installed between the mounting plate 11 and the fastener 21. The corrugated design of the connecting reinforcement plate 22 allows the corrugated plate to gradually deform and absorb energy during a vehicle collision, thus mitigating the impact force and reducing the damage to the vehicle and its occupants. Furthermore, the corrugated plate will first undergo compression deformation along the corrugation direction during the collision, absorbing impact energy through the deformation process and reducing the degree of deformation of the vehicle body and its occupants. This can effectively reduce the local compression and deformation of the vehicle body and prevent the impact force from concentrating on other important parts of the vehicle body.

[0024] like Figures 3 to 5 As shown, a limiting ring is provided in the middle of the rotating shaft 132, a limiting groove is provided in the middle of the fixing plate 12, and the limiting ring is fixedly connected to the rotating shaft 132. A positioning groove is provided at the end of the rotating shaft 132 near the mounting part 143, and it is movably connected to the mounting part 143.

[0025] The above solution is adopted: through the cooperation of the rotating shaft 132 and the fixed plate 12, the design of the limiting ring of the rotating shaft 132 and the limiting groove of the fixed plate 12, the limiting ring is fixedly connected to the rotating shaft 132, and the cooperation of the limiting groove limits the rotating shaft 132 when it rotates, making the rotating shaft 132 more stable during rotation. The opening of the positioning groove of the rotating shaft 132 allows for adjustment of the positions of the moving part 133 and the mounting block 134 according to different automobiles. Then, the connecting plate 142 is rotated, allowing the mounting part 133 to move. 43 engages with the positioning groove, then the connecting plate 142 is released, and the connecting spring 141 drives the connecting plate 142 and the mounting piece 143 to reset, thereby engaging the rotating shaft 132. This prevents the rotating shaft 132 from rotating when it is not adjusted. The limiting ring is located in the middle of the rotating shaft 132 to limit the maximum adjustment of the moving part 133 and the mounting block 134, preventing the moving part 133 and the mounting block 134 from moving to the unthreaded position and being unable to reset.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, a limiting plate is provided at the end of the connecting spring 141 away from the connecting plate 142, and the limiting plate is movably connected to the fixing plate 12. A groove is provided on one side of the connecting plate 142, the connecting reinforcing plate 22 is a corrugated plate, and several through holes are provided on the top and bottom surfaces of the fixing member 21.

[0027] The above solution is adopted: through the cooperation of connecting spring 141 and fixing plate 12, and the design of the limiting plate of connecting spring 141, when it is necessary to rotate fixing plate 12 to adjust the position of two movable parts 133 and mounting block 134, pull connecting plate 142. Connecting plate 142 drives mounting part 143 to disengage from rotating shaft 132. Then, connect the tool to the positioning groove at the end of rotating shaft 132, rotate rotating shaft 132, drive movable part 133 and mounting block 134 to move, thereby adjusting the position of movable part 133 and mounting block 134. This allows for quick adjustment according to the requirements of different cars for the fixed installation position of the anti-collision beam, thereby reducing the complexity of design and manufacturing. Through the design of connecting reinforcing plate 22, corrugated plate is fixedly installed between fixing part 21 and mounting plate 11. Corrugated plate can During a vehicle collision, the corrugated plate gradually deforms and absorbs energy, mitigating the impact and reducing injury to the vehicle and its occupants. During the collision, the corrugated plate first compresses and deforms along the corrugation direction, absorbing impact energy and reducing the degree of deformation of the vehicle body and occupants. This effectively reduces localized compression and deformation of the vehicle body, preventing the impact force from concentrating on other important components. The through-holes on the top and bottom surfaces of the fixing component 21 effectively reduce the overall weight of the anti-collision beam. The through-hole design increases the deformation space of the anti-collision beam during a collision, allowing it more room to deform under impact. The through-hole portion undergoes controllable compression deformation during the collision, thus more effectively absorbing and dispersing collision energy and reducing vehicle damage.

[0028] like Figure 4 , Figure 5 As shown, both ends of the rotating shaft 132 are provided with reciprocating threads, the rotating shaft 132 is threadedly connected to the movable part 133, and both sides of the mounting block 134 are provided with fixing holes, and the mounting block 134 is movably connected to the fixing plate 12.

[0029] The above solution utilizes the cooperation between the rotating shaft 132 and the movable part 133. The rotating shaft 132 has threads at both ends, with the threads in opposite directions. This allows the movable part 133 and the mounting block 134 to move towards or away from each other when the rotating shaft 132 moves, enabling rapid adjustment based on the different requirements of various vehicles for the fixed installation position of the anti-collision beam. This reduces the complexity of design and manufacturing. The design of the fixing holes at both ends of the mounting block 134 allows for adjustments to the positions of the movable part 133 and the mounting block 134. After the section is completed, the anti-collision beam is fixedly connected to the car by bolts. The mounting block 134 is movably connected to the fixing plate 12. Limit blocks are set on the upper and lower sides of the mounting block 134. A sliding groove is opened on one side of the fixing plate 12, so that when the rotating shaft 132 drives the moving part 133 and the mounting block 134 to move, the mounting block 134 is more stable when moving, avoiding shaking. The inner wall of the sliding groove is smooth, which can effectively reduce the friction between the sliding object and reduce energy loss, avoiding jamming and slowdown caused by excessive friction.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat treatment method for a high-energy-absorbing aluminum alloy material used in automotive anti-collision beams, characterized in that, The steps are as follows: Step 1: Heat the aluminum alloy anti-collision beam profile or billet that has been homogenized and hot-extruded to 530°C to 550°C and hold it at this temperature for 60 to 180 minutes to allow the alloying elements to fully dissolve in the aluminum matrix. Then, perform rapid quenching to obtain a supersaturated solid solution. Step 2: After solution quenching, immediately transfer the workpiece to a heat treatment furnace or leave it at room temperature for no more than 24 hours, heat it to 90°C to 120°C, and hold it for 2 to 8 hours. Subsequent aging will provide uniform nucleation points. Step 3: Heat the pre-aged workpiece to 150°C to 170°C and hold for 8 to 24 hours to allow the material to reach its peak strength.

2. A high-energy-absorbing aluminum alloy material for automotive anti-collision beams, comprising mounting components (1), characterized in that: A fixing unit (2) is fixedly installed on one side of the mounting component (1); The mounting assembly (1) includes a mounting plate (11), a fixing plate (12) is fixedly mounted on one side of the mounting plate (11), a rotating unit (13) is provided on one side of the fixing plate (12), and a connecting unit (14) is fixedly mounted on the end of the mounting plate (11). The fixing unit (2) includes a fixing member (21), and a connecting reinforcing plate (22) is fixedly installed between the fixing member (21) and the mounting plate (11). The fixing member (21) is fixedly connected to the mounting plate (11).

3. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 2, characterized in that: The rotating unit (13) includes a rotating shaft (132), the rotating shaft (132) is movably connected to the middle of the fixed plate (12), a movable part (133) is movably connected to the outer wall of the rotating shaft (132), and an installation block (134) is fixedly installed on one side of the movable part (133).

4. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 3, characterized in that: A limiting ring is provided in the middle of the rotating shaft (132), and a limiting groove is provided in the middle of the fixing plate (12), and the limiting ring is fixedly connected to the rotating shaft (132).

5. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 2, characterized in that: The connecting unit (14) includes a connecting spring (141), and a connecting plate (142) is fixedly installed at the end of the connecting spring (141). An mounting component (143) is fixedly installed on the side of the connecting plate (142) near the rotating shaft (132).

6. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 5, characterized in that: The end of the connecting spring (141) away from the connecting plate (142) is provided with a limiting plate, and the limiting plate is movably connected to the fixing plate (12). A groove is provided on one side of the connecting plate (142).

7. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 5, characterized in that: The rotating shaft (132) has a positioning groove at its end near the mounting component (143) and is movably connected to the mounting component (143).

8. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 2, characterized in that: The connecting reinforcing plate (22) is a corrugated plate, and the top and bottom surfaces of the fastener (21) are provided with several through holes.

9. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 3, characterized in that: Both ends of the rotating shaft (132) are provided with reciprocating threads, and the rotating shaft (132) is threadedly connected to the movable part (133).

10. The high energy-absorbing aluminum alloy material for automotive anti-collision beams according to claim 3, characterized in that: The mounting block (134) has fixing holes on both sides, and the mounting block (134) is movably connected to the fixing plate (12).

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