Manufacturing method and system for aluminum alloy high-strength toughened mesh wall panels

Abstract

This invention provides a method for manufacturing a high-strength, toughened aluminum alloy mesh panel, comprising: online or offline solution quenching of aluminum alloy or aluminum-lithium alloy sheets; pre-aging treatment of the solution-quenched sheets; CNC milling of the pre-aged sheets for planar skin and mesh ribs; bending the milled sheets into shape, using an arc template to control the radius of curvature in real time during the bending process; peak artificial aging treatment of the bent panel; and surface treatment and protective packaging of the aged panel. This invention effectively regulates the microstructure of aluminum alloy or aluminum-lithium alloy materials, significantly improving the strength-toughness ratio; the pre-aging treatment maintains moderate hardness and high plasticity before bending, greatly reducing the risk of stress concentration and cracking at the interface between the ribs and skin during bending, thus improving the forming pass rate and material utilization rate.

Description

Technical Field

[0001] This invention relates to the technical field of metal forming of aluminum alloy components, and more specifically, to a method and system for manufacturing aluminum alloy high-strength and toughened mesh panels. Background Technology

[0002] Launch vehicles, missiles, and spacecraft, among other aerospace weaponry, serve as strategic high ground in international competition and are important indicators of a nation's technological level and military strength. With the rapid development of these high-end equipment, the performance requirements for their key components are becoming increasingly stringent, specifically including high performance, high reliability, and lightweight design. Against this backdrop, the use of lightweight, high-strength materials and thin-walled, integrally structured complex structures has become an inevitable choice. Among these, stiffened thin-walled components, as an important and typical example, achieve significant weight reduction while maintaining the original structural strength.

[0003] The launch vehicle grid section is an important component of the rocket structure. During flight, it must withstand large axial compression, high internal pressure, and large bending moment loads, which places extremely high demands on the structural rigidity, strength, and manufacturing precision of the section. In order to achieve lightweight and weight reduction, the grid section is usually designed as a ribbed grid, and its main body is an arc-shaped component formed by processes such as rolling, milling, and welding of aluminum alloy / aluminum-lithium alloy panels.

[0004] Aluminum-lithium alloys are increasingly used in rocket panels due to their superior properties. However, metallic materials generally exhibit a "strength-toughness inversion" principle, meaning that materials with high strength tend to have relatively low plasticity and toughness. Traditional aluminum alloy panel manufacturing typically employs a process of "aging blank – milling mesh – bending – anodizing – welding." However, for aluminum-lithium alloys, when processing aging plates using this process, cracking is highly likely to occur at stress concentration points at the interface between the mesh reinforcement and the skin during bending, resulting in extremely low product yield and very high material costs. Furthermore, high-strength aluminum alloys such as 2-series and 7-series alloys face similar problems when processing high-reinforcement-to-thickness panels. During service, these panels, with their high residual stress, are highly susceptible to crack initiation after repeated axial compression and internal pressure cyclic loading, which can then propagate into cracks, seriously threatening the safety of the spacecraft.

[0005] In existing technologies, the manufacturing processes for bent mesh panels mainly include hot bending, flexible medium bending, and filler bending. These processes mostly aim to reduce the stress gradient during the coordinated deformation of the mesh panel ribs and skin to avoid cracking. However, these methods do not address the issue of improving the combination of material strength and toughness to enhance the overall bending and service performance of the component. For example, patents CN117340081A, CN11734008A, and CN114633417A mentioned in the prior art use fillers and pads to improve the deformation coordination between the ribs and skin; CN117066439A uses local heating to reduce flow stress during bending; CN109500156B uses polyurethane rubber to replace the rolling die; and CN106425297A uses a pre-bending and post-milling scheme. However, these methods mostly face problems such as high equipment costs, complex processes, or the potential for scrapping the entire component.

[0006] Therefore, a new technical solution is needed to address the aforementioned technical problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide a method and system for manufacturing aluminum alloy high-strength toughened mesh wall panels.

[0008] According to the present invention, a method for manufacturing a high-strength, toughened aluminum alloy mesh wall panel includes the following steps: Step S1: Perform online or offline solution quenching treatment on aluminum alloy or aluminum-lithium alloy plates; Step S2: Perform pre-aging treatment on the solution-quenched plate; Step S3: Perform CNC milling on the pre-aged sheet metal to create a planar skin and mesh reinforcement; Step S4: The milled sheet metal is bent into shape, and the radius of curvature is controlled in real time using an arc template during the bending process; Step S5: Perform peak artificial aging treatment on the bent wall panel; Step S6: Perform surface treatment and protective packaging on the aged wall panels.

[0009] Preferably, the solution quenching in step S1 is carried out using an air-cushion continuous heat treatment production line, the quenching transfer time is no more than 12 seconds, and the cooling method is air cooling or water cooling.

[0010] Preferably, the pre-aging in step S2 is carried out in an air cushion aging furnace, using a roller bottom continuous oscillating conveyor, and the holding time is precisely controlled by a PLC control system; the pre-aging temperature is 70–150℃, and the holding time is 1–6 hours.

[0011] Preferably, the bending process in step S4 adopts a combination of squeegee pressing and roll bending, wherein squeegee pressing is used for bending the end of the wall panel, and roll bending is used for rolling the middle area of ​​the wall panel. The total reduction of the roller is 50–300 mm, and the step reduction is 2–10 mm. The tolerance between the forming contour and the template curve is controlled within 0.3 mm.

[0012] Preferably, during the bending process, an electronic three-point radius of curvature measuring instrument is installed on the discharge side of the roll bending machine to monitor and provide feedback on curvature data in real time to adjust process parameters.

[0013] Preferably, after solution quenching, the plate is further subjected to a stretching and straightening step with a stretching rate of 0.5–3%.

[0014] Preferably, the aging temperature in step S5 is 150–190℃, and the heat preservation time is 5–20 hours.

[0015] The present invention also provides a manufacturing system for aluminum alloy high-strength toughened mesh wall panels, the system being used in the above-mentioned method for manufacturing aluminum alloy high-strength toughened mesh wall panels, the system comprising: Solution hardening module: used for online or offline solution hardening of aluminum alloy or aluminum-lithium alloy plates; Pre-aging treatment module: used to pre-age the plate after solution quenching; CNC milling module: used for processing skin and mesh reinforcement on pre-aged sheet metal; Bending forming module: Equipped with an arc template and a real-time curvature detection device for precise bending of wall panels; Peak aging module: used for artificial aging of bent wall panels; Surface treatment and packaging module: used to complete the anodizing treatment and protective packaging of the wall panels.

[0016] Preferably, the bending forming module includes a pressure device and a roll bending machine, and integrates a curvature measurement and feedback control system; the entire system is controlled by a central PLC to uniformly control the cycle time and process parameters of each module, thereby realizing the automated operation of the production line.

[0017] Preferably, the real-time curvature detection device is an electronic three-point curvature radius measuring instrument, which is installed on the discharge side of the roll bending machine to monitor the curvature of the bent area in real time.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention effectively controls the microstructure of aluminum alloy or aluminum-lithium alloy materials by using a combination of online or offline solution quenching and low-temperature pre-aging treatment, which significantly improves the strength-toughness matching of the materials. The pre-aging treatment allows the materials to maintain moderate hardness and high plasticity before bending, which greatly reduces the risk of stress concentration and cracking at the junction of the ribs and skin during the bending process of high-rib mesh panels, and improves the forming qualification rate and material utilization rate. 2. This invention innovatively introduces a real-time curvature detection method for wall panels in the bending process. The bent area is monitored online by an electronic three-point curvature radius measuring instrument, and the forming accuracy is controlled by a circular arc template. The tolerance between the forming contour and the template curve does not exceed 0.3mm, which significantly improves the bending forming accuracy and consistency of large-size, high-rib thin-walled mesh wall panels, and provides a high-quality guarantee for subsequent welding and assembly. 3. This invention optimizes the solution quenching-pre-aging-bending-peak aging process route, achieving high strength of components while increasing elongation to 13%–17%, and significantly reducing residual stress levels from 300–500 MPa in traditional processes to the level of hundreds of MPa. This significantly improves the crack propagation resistance of components under cyclic loading and increases damage tolerance by more than 50%, which is of great significance for meeting the long-life and high-reliability requirements of key components of reusable launch vehicles and re-entry vehicles. Attached Figure Description

[0019] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a process flow diagram of the present invention. Detailed Implementation

[0020] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0021] Example 1 Reference Figure 1 According to the present invention, a method for manufacturing an aluminum alloy high-strength toughened mesh wall panel includes the following steps: Step S1: Perform online or offline solution quenching on the aluminum alloy or aluminum-lithium alloy sheet; the solution quenching adopts an air-cushioned continuous heat treatment production line, the quenching transfer time does not exceed 12 seconds, and the cooling method is air cooling or water cooling. After solution quenching, the sheet is also stretched and straightened, with a stretching rate of 0.5–3%.

[0022] Step S2: Pre-aging treatment is performed on the plate after solution quenching; the pre-aging is carried out in an air cushion aging furnace, using a roller bottom continuous oscillating transmission, and the holding time is precisely controlled by a PLC control system; the pre-aging temperature is 70–150℃, and the holding time is 1–6 hours.

[0023] Step S3: Perform CNC milling on the pre-aged sheet metal to create a planar skin and mesh reinforcement; Step S4: The milled sheet metal is bent into shape. During the bending process, a circular arc template is used to control the radius of curvature in real time. The bending process adopts a combination of squeegee pressing and roll bending. Squeegee pressing is used for bending the ends of the panel, and roll bending is used for rolling the middle area of ​​the panel. The total reduction of the rollers is 50–300 mm, and the step reduction is 2–10 mm. The tolerance between the formed contour and the template curve is controlled within 0.3 mm. During the bending process, an electronic three-point radius of curvature measuring instrument is set on the output side of the roll bending machine to monitor and provide feedback on the curvature data in real time to adjust the process parameters.

[0024] Step S5: Perform peak artificial aging treatment on the bent wall panel; the aging temperature is 150–190℃, and the holding time is 5–20 hours.

[0025] Step S6: Perform surface treatment and protective packaging on the aged wall panels.

[0026] The present invention also provides a manufacturing system for aluminum alloy high-strength toughened mesh wall panels, the system being used in the above-mentioned method for manufacturing aluminum alloy high-strength toughened mesh wall panels, the system comprising: Solution hardening module: used for online or offline solution hardening of aluminum alloy or aluminum-lithium alloy plates; Pre-aging treatment module: used to pre-age the plate after solution quenching; CNC milling module: used for processing skin and mesh reinforcement on pre-aged sheet metal; Bending and forming module: Equipped with an arc template and a real-time curvature detection device, it is used for precise bending of the wall panels. The bending and forming module includes a pressure device and a roll bending machine, and integrates a curvature measurement and feedback control system. The entire system is controlled by a central PLC to uniformly control the cycle time and process parameters of each module, realizing automated operation of the production line. The real-time curvature detection device is an electronic three-point curvature radius measuring instrument, set on the discharge side of the roll bending machine, for real-time monitoring of the curvature of the bent area.

[0027] Peak aging module: used for artificial aging of bent wall panels; Surface treatment and packaging module: used to complete the anodizing treatment and protective packaging of the wall panels.

[0028] Example 2 This invention proposes a manufacturing process for reusable aluminum alloy high-strength toughened mesh panels for launch vehicles. By optimizing material processing procedures and process parameters, it improves the bending and service performance of components by enhancing the combination of material strength and toughness, thus meeting the high-performance, high-reliability, and lightweight requirements of key components in high-end equipment. This differs from traditional panel processing methods, improving the bending and service performance of components by optimizing the combination of material strength and toughness.

[0029] A manufacturing process for aluminum alloy high-strength toughened mesh wall panels includes the following steps: S1—Online or offline solution quenching: The raw materials of aluminum alloy or aluminum-lithium alloy plates are subjected to online or offline solution quenching; an air cushion type continuous heat treatment production line is adopted, with roller bottom type continuous conveying and quenching as the starting point of the manufacturing system, and a feeding roller channel is set on the furnace inlet side. S2—Pre-aging: Pre-aging of raw materials after online or offline solution quenching; material hardness range is 85-100HB; pre-aging treatment is completed within a specified time through an air cushion aging furnace, continuous roller bottom oscillating transmission, and PLC control from feeding to discharging. S3—Slab milling mesh: Processing the flat skin and mesh reinforcement of the raw material. S4—Bending: Bending aluminum alloy / aluminum-lithium alloy sheets, using an arc template to control the radius of curvature of the forming area during the bending process; introducing a real-time curvature detection method for the wall panel to control the tolerance between the forming contour and the template curve to be no more than 0.3mm; the real-time bending curvature detection of the wall panel is set on the discharge side of the roll bending machine, and the radius of curvature of the rolled area is monitored in real time by an electronic three-point radius of curvature measuring instrument.

[0030] S5—Peak Artificial Aging: Artificial aging of aluminum alloy / aluminum-lithium alloy panels improves component strength and overall performance while reducing residual stress levels. This is based on the influence of pre-aging and peak pre-strengthening process parameters on the room temperature mechanical properties and deformation characteristics of the pre-strengthened billet. Besides the plasticity of the billet, the mechanical properties of the formed component are crucial to its service life. The bent panels are removed from the production line, batched, and transported to a peak aging furnace for artificial aging treatment. S6—Surface treatment, packaging protection.

[0031] A manufacturing system for high-strength, toughened aluminum alloy mesh panels integrates a solution hardening line, a pre-aging line, a CNC milling station, and an intelligent bending station. The system uses a PLC to control the operating parameters of each cycle in real time and achieves real-time measurement of the panel curvature. After the panels are produced, they undergo batch processing for peak aging and surface treatment.

[0032] Furthermore, in step S1, the online or offline solution quenching process parameters are: heat treatment temperature 460-540℃, cooling method is air cooling or water cooling, and quenching transfer time ≤12s. Furthermore, in step S2, the pre-aging temperature is 70-150℃, and the holding time is 1-6h; Furthermore, in step S2, the pre-aging temperature is 90-110℃, and the holding time is 2-4 hours; Furthermore, in step S3, the bending process parameters are as follows: a guillotine bending method is adopted, with a preferred use of an arc-shaped punch, a step distance of 15-35mm, a total bending reduction of 50-150mm, a step reduction of 2-5mm, and an arc template is used to control the radius of curvature of the forming area.

[0033] Furthermore, in step S3, the bending process parameters are as follows: a stern bending machine or a roll bending machine, or a combination of both, is preferred. The stern bending machine is used to bend the ends of the wall panel, while the roll bending machine completes the rolling of the middle area of ​​the wall panel to improve efficiency. The total reduction of the rollers is 50–300 mm, the step reduction is 2–10 mm, and the radius of curvature of the forming area is controlled by an arc template.

[0034] Furthermore, in step S4, the aging temperature is 150-190℃, and the heat preservation time is 5-20h.

[0035] Furthermore, after step S1 is completed, the quenched sheet is stretched and straightened first, with a stretching rate of 0.5% to 3%.

[0036] like Figure 1 As shown, this embodiment provides a manufacturing process for a 2-series aluminum alloy curved mesh panel, including the following steps: 1) Online solution quenching: The 16mm 2219 sheet material is subjected to online solution quenching; The online solution quenching process parameters are: heat treatment temperature of 535℃, cooling method of water cooling, and quenching transfer time of 9s.

[0037] 2) Pre-aging: Pre-aging of raw materials after online solution quenching; The pre-aging temperature is 120℃, and the holding time is 5 hours.

[0038] 3) Flat plate milling mesh: Processing the flat skin and mesh reinforcement of the raw material.

[0039] The thickest rib in the wall panel is 15mm high, the skin thickness is 2mm, and the rib width is 8mm.

[0040] 4) Bending: The milled sheet metal is bent, and the radius of curvature of the forming area is controlled by an arc template during the bending process.

[0041] The guillotine bending method is adopted, preferably using an arc-shaped punch with a step distance of 25mm and a bending step reduction of 2-5mm. The curvature radius of the forming area is controlled by an arc template that is attached to a Φ3800mm curvature template.

[0042] 5) Peak artificial aging: Artificial aging of aluminum alloy / aluminum-lithium alloy panels improves component strength and overall performance while reducing residual stress levels.

[0043] The aging temperature is 175℃, and the heat preservation time is 10 hours.

[0044] 6) Surface treatment and packaging protection.

[0045] The surface is treated with sulfuric acid anodizing and then packaged for protection.

[0046] Table 1 shows the mechanical properties of samples taken from 16mm thick 2219-T8 aluminum alloy plate bending components using existing technology.

[0047] Table 1 Mechanical properties of 2219 wall panels obtained by existing processes

[0048] Table 2 shows the mechanical properties of a 16mm thick 2219-T4P aluminum alloy sheet after bending and peak aging using the process of Example 1.

[0049] Table 2 Mechanical properties of the 2219 wall panel obtained in Example 1

[0050] Comparing Tables 1 and 2, it can be seen that the elongation of the components obtained after forming aluminum alloy panels using the process of Example 1 of the present invention increased from 9% to over 15%, while the residual stress level decreased from 300 MPa to 100 MPa, and the yield strength and tensile strength were comparable.

[0051] Please refer to Figure 1 A manufacturing process for a 2195 aluminum-lithium alloy curved mesh panel is provided, comprising the following steps: 1) Offline solution quenching: The 14mm 2195 steel plate raw material is subjected to online solution quenching; The online solution quenching process parameters are: heat treatment temperature of 510℃, cooling method of water cooling, and quenching transfer time of 9s.

[0052] 2) Pre-aging: Pre-aging of raw materials after online solution quenching; The pre-aging temperature is 90℃, and the holding time is 4 hours.

[0053] 3) Flat plate milling mesh: Processing the flat skin and mesh reinforcement of the raw material.

[0054] The thickest rib in the wall panel is 12mm high, the skin thickness is 1.6mm, and the rib width is 6mm.

[0055] 4) Bending: The milled sheet metal is bent, and the radius of curvature of the forming area is controlled by an arc template during the bending process.

[0056] A combination of shunting and roll bending is used for bending the two ends of the panel. The shunting is used to bend the ends of the panel with a step size of 25mm and a bending step reduction of 2-5mm. A circular arc template is used to control the radius of curvature of the forming area at both ends, which is aligned with a Φ3350mm curvature template. The roll bending machine completes the rolling of the middle area of ​​the panel to improve efficiency. The total reduction of the rollers is 300mm, with a step reduction of 2-10mm. A circular arc template is used to control the radius of curvature of the forming area, which is aligned with a Φ3350mm curvature template.

[0057] 5) Peak artificial aging: Artificial aging of aluminum alloy / aluminum-lithium alloy panels improves component strength and overall performance while reducing residual stress levels.

[0058] The aging temperature is 160℃, and the heat preservation time is 16h.

[0059] 6) Surface treatment and protection.

[0060] The surface is treated with sulfuric acid anodizing and then packaged for protection.

[0061] Table 3 shows the mechanical properties of samples taken from 14mm thick 2195-T8 aluminum alloy plate bending components using existing technology.

[0062] Table 3 Forming Indicators of 2195 Wall Panels Obtained by Existing Processes

[0063] Table 4 shows the mechanical properties of a 14mm thick 2195-T4P aluminum alloy sheet after bending and peak aging using the process of Example 1.

[0064] Table 4 shows the forming index of the 2195 wall panel obtained in Example 2.

[0065] Comparing Tables 3 and 4, it can be seen that the existing process caused sample 2 to crack during roll bending, resulting in the scrapping of the entire part and a quality cost loss of 230,000 yuan. However, the component obtained after forming the aluminum alloy panel using the process of Example 2 of this invention showed an increase in elongation from 6.5% to over 13%, while the residual stress level decreased from 400 MPa to 100 MPa. The yield strength and tensile strength were also superior to those obtained using the traditional process. This indicates a significant improvement in the service reliability of the component and the damage tolerance of the material, which is of great significance for reusable launch vehicles and reusable spacecraft.

[0066] This invention discloses a manufacturing process for high-strength, toughened aluminum alloy mesh panels, mainly including online or offline solution quenching, pre-aging, milling the mesh onto a flat plate, panel bending, peak artificial aging, surface treatment, and protection. This invention proposes a manufacturing process for bent aluminum alloy mesh panels. After solution quenching, the sheet metal undergoes a low-temperature pre-aging treatment to maintain a low strength for a certain period before bending and forming. After panel formation, the components undergo peak artificial aging. After aging, the elongation of the aluminum alloy panel increases from the current 5%–9% to 13%–17%, while the residual stress level decreases from 300–500 MPa to the hundreds of MPa level, which is of great significance for reusable launch vehicles and reusable spacecraft.

[0067] The peak artificial aging step of this invention not only improves the strength and overall performance of the components but also significantly reduces the residual stress level. After peak aging, the residual stress level of the aluminum alloy panel is drastically reduced from the original 300-500 MPa level to the 100 MPa level, which is of great significance for improving the service reliability and extending the service life of the components. By establishing a life equation using the Paris formula in fracture mechanics theory and considering the influence of residual stress on the stress intensity factor, it can be demonstrated that there is a strong correlation between the increase in crack propagation rate and residual stress. Residual tensile stress increases the driving force for crack propagation, thereby accelerating the crack propagation rate and affecting the service life of the components. According to the Paris formula, ,in, is the crack propagation rate, a is the crack length, and N is the number of cycles; This represents the range of stress intensity factors, where C and m are constants related to material properties. A decrease in [the value of] will reduce the crack propagation rate. When residual stress exists... At that time, the actual stress acting on the crack tip is the stress generated by the applied load. With residual stress The superposition of residual tensile stresses. When ), the actual range of stress intensity factor. This will increase the crack propagation rate. Calculations show that reducing residual stress from 300-500 MPa to the level of hundreds of megapascals can reduce the crack propagation rate by more than 50%.

[0068] Those skilled in the art can understand this embodiment as a more specific description of Embodiment 1.

[0069] Those skilled in the art will understand that, besides implementing the system and its various devices, modules, and units provided by this invention in the form of purely computer-readable program code, the same functions can be achieved entirely through logical programming of the method steps, making the system and its various devices, modules, and units of this invention function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system and its various devices, modules, and units provided by this invention can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; alternatively, the devices, modules, and units for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0070] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A method for manufacturing a high-strength, toughened aluminum alloy mesh wall panel, characterized in that, The method includes the following steps: Step S1: Perform online or offline solution quenching treatment on aluminum alloy or aluminum-lithium alloy plates; Step S2: Perform pre-aging treatment on the solution-quenched plate; Step S3: Perform CNC milling on the pre-aged sheet metal to create a planar skin and mesh reinforcement; Step S4: The milled sheet metal is bent into shape, and the radius of curvature is controlled in real time using an arc template during the bending process; Step S5: Perform peak artificial aging treatment on the bent wall panel; Step S6: Perform surface treatment and protective packaging on the aged wall panels; The solution quenching in step S1 is carried out using an air cushion type continuous heat treatment production line, the quenching transfer time does not exceed 12 seconds, and the cooling method is air cooling or water cooling. The pre-aging in step S2 is carried out in an air cushion aging furnace, using a roller bottom continuous oscillating conveyor, and the holding time is precisely controlled by a PLC control system; the pre-aging temperature is 70–150℃, and the holding time is 1–6 hours. The bending process in step S4 adopts a combination of shunting and roll bending. The shunting is used for bending the end of the wall panel, and the roll bending machine is used for rolling the middle area of ​​the wall panel. The total reduction of the roller is 50-300mm, and the step reduction is 2-10mm. The tolerance between the forming contour and the template curve is controlled within 0.3mm. During the bending process, an electronic three-point radius of curvature measuring instrument is installed on the discharge side of the roll bending machine to monitor and provide feedback on curvature data in real time to adjust process parameters; The process after solution quenching also includes a stretching and straightening step for the sheet metal, with a stretching rate of 0.5–3%. The aging temperature in step S5 is 150–190℃, and the heat preservation time is 5–20 hours.

2. A manufacturing system for aluminum alloy high-strength toughened mesh wall panels, characterized in that, The system is used in the manufacturing method of aluminum alloy high-strength toughened mesh wall panel according to any one of claims 1, the system comprising: Solution hardening module: used for online or offline solution hardening of aluminum alloy or aluminum-lithium alloy plates; Pre-aging treatment module: used to pre-age the plate after solution quenching; CNC milling module: used for processing skin and mesh reinforcement on pre-aged sheet metal; Bending forming module: Equipped with an arc template and a real-time curvature detection device for precise bending of wall panels; Peak aging module: used for artificial aging of bent wall panels; Surface treatment and packaging module: used to complete the anodizing treatment and protective packaging of the wall panels.

3. The aluminum alloy high-strength toughened mesh wall panel manufacturing system according to claim 2, characterized in that, The bending forming module includes a pressure device and a roll bending machine, and integrates a curvature measurement and feedback control system; the entire system is controlled by a central PLC to uniformly control the cycle time and process parameters of each module, thereby realizing the automated operation of the production line.

4. The aluminum alloy high-strength toughened mesh wall panel manufacturing system according to claim 2, characterized in that, The real-time curvature detection device is an electronic three-point curvature radius measuring instrument, which is set on the discharge side of the roll bending machine to monitor the curvature of the bent area in real time.

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