Production method of high-toughness lightweight riveting nut

Abstract

The invention relates to the technical field of metal casting, and discloses a production method of a high-toughness lightweight riveting nut, which comprises the following steps: step A, material selection and alloying treatment; step B, precision forming; c, surface strengthening treatment; step D, intelligent riveting process; and step E, quality detection and a feedback mechanism. According to the invention, the high-strength aluminum alloy containing magnesium, zinc, copper and other trace elements is selected as a base material, and accurate alloying treatment is carried out, so that the microstructure and mechanical properties of the material are optimized, and the hardness and deformation resistance of the material are remarkably improved; in the surface strengthening treatment stage, means such as shot peening strengthening, carburizing treatment and an ion implantation technology are adopted, a vacuum carburizing technology is introduced, and a high-energy ion beam is adopted for surface strengthening, so that the hardness, the wear resistance and the corrosion resistance of the surface of the riveting nut are remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, and in particular to a method for producing a high-strength and lightweight riveted nut. Background Art

[0002] Metal casting is a metal heat processing technology with a long history. It involves melting metal into a liquid that meets certain requirements, pouring it into a mold, and obtaining a casting with a predetermined shape, size and performance after cooling, solidification and cleaning. Especially driven by the lightweight technology of automobiles, lightweight materials such as aluminum alloys are increasingly used in car bodies. Although these materials can significantly reduce the weight of the car body, their low strength and easy deformation bring challenges to the design and production of rivet nuts.

[0003] However, traditional riveted nuts are usually made of high-strength materials such as steel. Although they have high strength and toughness, they are heavy, which is not conducive to achieving the goal of lightweighting. In recent years, lightweight materials such as aluminum alloys have been widely used in the manufacture of automobiles and other products due to their advantages such as low density, high strength, and good corrosion resistance. However, lightweight materials such as aluminum alloys have relatively low strength and are easy to deform, which makes traditional riveted nuts prone to problems such as insufficient pull-out resistance and severe torque attenuation when used with them. Based on this, the present invention designs a production method for riveted nuts with high strength, toughness, and lightweight to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a method for producing a riveted nut with high strength and light weight, which solves the problems of insufficient pull-out resistance and serious torque attenuation in the background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A method for producing a high-strength and lightweight riveted nut comprises the following steps:

[0007] Step A, material selection and alloying treatment, selecting high-strength aluminum alloy as the base material, and alloying the selected aluminum alloy; optimizing alloying parameters, determining the optimal alloying treatment temperature, time and cooling method through experiments according to the specific composition of the selected aluminum alloy;

[0008] Step B, precision molding, using precision casting or cold forging technology to further optimize mechanical properties;

[0009] Step C: surface strengthening treatment, performing surface strengthening treatment on the formed riveted nut to extend its service life;

[0010] Step D, intelligent riveting process, through a closed-loop control system, ensures the tightness and consistency of each riveting point;

[0011] Step E, quality inspection and feedback mechanism, implements strict quality inspection on the finished riveted nuts and feeds the inspection results back to the production process in real time.

[0012] Preferably, the step A comprises the following steps: step a, selecting a high-strength aluminum alloy containing trace elements such as magnesium, zinc, and copper as a base material, wherein the aluminum alloy has a tensile strength of not less than 400 MPa, a yield strength of not less than 300 MPa, and a density of less than 2.7 g / cm 3 ; Step b, accurately mix the trace elements, use high-precision analytical instruments to detect and adjust the content of elements such as magnesium, zinc, and copper to ensure that the alloy composition meets the design requirements; alloy the selected aluminum alloy, adjust the content ratio of the alloy elements, and optimize the heat treatment process to improve the comprehensive mechanical properties of the material, especially the hardness and deformation resistance; Step c, the material after alloying treatment must undergo strict heat treatment quality inspection, including but not limited to hardness test, tensile test and metallographic analysis.

[0013] Preferably, the step B includes the following steps: step a, using precision casting or cold forging technology, combined with computer-aided design and simulation analysis, to accurately control the geometric shape, dimensional accuracy and internal structure of the riveted nut to ensure that the product is lightweight while maintaining high strength and toughness; step b, using computer-aided design software to perform precise three-dimensional modeling, and using computer-aided manufacturing technology to design and manufacture the mold; step c, during the molding process, implementing precise temperature control management to control the microstructure and phase change process of the material; step d, temperature control management uses advanced heating and cooling systems, combined with real-time monitoring technology, to ensure that temperature fluctuations during the molding process are controlled within ±6°C.

[0014] Preferably, the step C includes the following steps: step a, performing surface strengthening treatment on the formed riveted nut, including but not limited to shot peening, carburizing or ion implantation technology to improve surface hardness, wear resistance and corrosion resistance; before performing the strengthening treatment, first remove rust and oxide layer from the surface of the nut; step b, the surface hardness of the riveted nut after the surface strengthening treatment should be not less than HB120, and it can effectively resist environmental corrosion; step c, after the surface strengthening treatment is completed, surface roughness detection and coating adhesion test are also required.

[0015] Preferably, the step D includes the following steps: step a, developing and applying an intelligent riveting system, which integrates sensors, controllers and actuators and can monitor key parameters such as pressure, displacement and temperature in the riveting process in real time; step b, calibrating the intelligent riveting system, and regularly calibrating the sensors, controllers and actuators in the system; step c, dynamically adjusting the riveting force, riveting speed and riveting time according to the real-time monitoring data through a closed-loop control system to ensure the tightness and consistency of each riveting point and reduce material deformation; step d, the closed-loop control system uses advanced algorithms, including machine learning or neural network algorithms, to continuously optimize the riveting parameters according to historical data and real-time monitoring data.

[0016] Preferably, the step E includes the following steps: step a, implementing strict quality inspection on the finished riveted nuts, including but not limited to dimensional measurement, mechanical property testing, surface quality inspection and non-destructive testing; step b, online quality inspection, introducing automated testing equipment, such as a machine vision system, to perform real-time inspection of the nuts on the production line; step c, establishing a quality data feedback mechanism, and feeding back the test results to the production process in real time for optimizing process parameters; step d, the quality data feedback mechanism uses big data analysis technology to conduct in-depth mining of the collected quality data, identify potential problems in the production process, and provide a scientific basis for process improvement and product optimization.

[0017] Preferably, step A also includes the following steps: before alloying treatment, preheating the aluminum alloy raw material, and controlling the preheating temperature within a preset temperature range to eliminate residual stress inside the raw material and improve the effect of the alloying treatment; during the alloying treatment, using inert gas protection to prevent the alloy elements from oxidizing at high temperatures to ensure the quality of the alloying treatment; after the alloying treatment is completed, rapid cooling is performed, and the cooling rate is adjusted according to the alloy composition and expected performance to refine the grain structure.

[0018] Preferably, step B also includes the following steps: during the mold design and manufacturing process, high-precision CNC machine tools are used for processing to ensure the dimensional accuracy and surface finish of the mold to reduce material waste and finished product defects during the molding process; during the molding process, pressure sensors and temperature sensors are used to monitor the pressure and temperature in the mold in real time, and the closed-loop control system is used to automatically adjust to ensure the stability and consistency of the molding conditions; after molding, the riveted nut is subjected to stress relief annealing to eliminate the residual stress generated during the molding process.

[0019] Preferably, step C also includes the following steps: during the shot peening process, controllable shot peening intensity and coverage are used to optimize the surface residual stress distribution and improve fatigue resistance; during carburizing treatment, the carburizing temperature and carburizing time are precisely controlled to obtain an ideal carburized layer depth and carbon concentration distribution; in ion implantation technology, appropriate ion species and implantation energy are selected to form a dense strengthening layer on the surface.

[0020] Preferably, step D also includes the following steps: an adaptive control algorithm is integrated into the intelligent riveting system, which can automatically adjust the riveting parameters according to the characteristics of the riveting material and the position of the riveting point to achieve personalized riveting; the system has remote monitoring and fault diagnosis functions, which can monitor the operating status of the equipment in real time and promptly discover and handle potential faults.

[0021] Preferably, step E also includes the following steps: introducing artificial intelligence and machine learning technologies to intelligently analyze and predict quality inspection data, identify potential quality problems in advance, and reduce the generation of defective products; based on quality data feedback, use advanced quality management tools such as Six Sigma to continuously optimize the production process.

[0022] Preferably, the surface strengthening treatment in step C further comprises the following steps:

[0023] Step S1, during shot peening, ceramic or glass beads are used as shot peening media to reduce damage to the material surface; Step S2, during carburizing, vacuum carburizing technology is used to reduce oxidation and decarburization during the carburizing process; Step S3, in ion implantation technology, high-energy ion beams, such as nitrogen ions or carbon ions, are used to form a nano-composite strengthening layer with excellent wear resistance and corrosion resistance by precisely controlling the implantation energy and dosage.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0025] 1. The present invention optimizes the microstructure and mechanical properties of the material and significantly improves the hardness and deformation resistance of the material by selecting a high-strength aluminum alloy containing trace elements such as magnesium, zinc, and copper as the basic material and performing precise alloying treatment. In the surface strengthening treatment stage, shot peening, carburizing, and ion implantation techniques are used, vacuum carburizing technology is introduced, and high-energy ion beams are used for surface strengthening. These measures significantly improve the hardness, wear resistance, and corrosion resistance of the surface of the riveted nut.

[0026] 2. The present invention develops and applies an intelligent riveting system to monitor key parameters in the riveting process in real time, and dynamically adjusts the riveting force, speed and time according to the real-time monitoring data, thereby ensuring the tightness and consistency of each riveting point, effectively reducing material deformation and improving the riveting quality.

[0027] 3. In the process of mold design and manufacturing, the present invention adopts high-precision CNC machine tools for precision processing, which ensures the dimensional accuracy and surface finish of the mold, thereby reducing material waste and finished product defects in the molding process; at the same time, it introduces automated testing equipment and quality data feedback mechanism to realize real-time detection of nuts on the production line, and continuously optimizes the production process according to quality data feedback, thereby improving production efficiency and quality stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of the method for producing the high-strength and lightweight riveted nut of the present invention;

[0029] Figure 2 A detailed flow chart of the riveted nut production method of the present invention;

[0030] Figure 3 A supplementary diagram of the process of the riveted nut production method of the present invention;

[0031] Figure 4 FIG. 1 is a flow chart of the surface strengthening treatment of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 4 In an embodiment of the present invention, a method for producing a high-strength and lightweight riveted nut comprises the following steps:

[0034] Step A, material selection and alloying treatment, select high-strength aluminum alloy as the basic material, and alloy the selected aluminum alloy; alloying parameter optimization, according to the specific composition of the selected aluminum alloy, determine the optimal alloying treatment temperature, time and cooling method through experiments; step B, precision molding, use precision casting or cold forging molding technology to further optimize the mechanical properties; step C, surface strengthening treatment, the surface of the formed riveted nuts is strengthened to extend the service life; step D, intelligent riveting process, through a closed-loop control system, ensure the tightness and consistency of each riveted point; step E, quality inspection and feedback mechanism, implement strict quality inspection on the finished riveted nuts, and feed back the inspection results to the production process in real time.

[0035] Step A includes the following steps: Step a, selecting a high-strength aluminum alloy containing trace elements such as magnesium, zinc, and copper as a base material, wherein the tensile strength of the aluminum alloy is not less than 400 MPa, the yield strength is not less than 300 MPa, and the density is less than 2.7 g / cm 3 ; Step b, accurately mix the trace elements, use high-precision analytical instruments to detect and adjust the content of elements such as magnesium, zinc, and copper to ensure that the alloy composition meets the design requirements; alloy the selected aluminum alloy, adjust the content ratio of the alloy elements, and optimize the heat treatment process to improve the comprehensive mechanical properties of the material, especially the hardness and deformation resistance; Step c, the material after alloying treatment must undergo strict heat treatment quality inspection, including but not limited to hardness test, tensile test and metallographic analysis.

[0036] Step B includes the following steps: step a, using precision casting or cold forging technology, combined with computer-aided design and simulation analysis, to accurately control the geometric shape, dimensional accuracy and internal organizational structure of the riveted nut to ensure that the product is lightweight while maintaining high strength and toughness; step b, using computer-aided design software to perform precise three-dimensional modeling, and using computer-aided manufacturing technology to design and manufacture the mold; step c, during the molding process, implementing precise temperature control management to control the microstructure and phase change process of the material; step d, temperature control management uses advanced heating and cooling systems, combined with real-time monitoring technology, to ensure that the temperature fluctuation during the molding process is controlled within ±6°C.

[0037] Step C includes the following steps: step a, performing surface strengthening treatment on the formed riveted nut, including but not limited to shot peening, carburizing or ion implantation technology to improve surface hardness, wear resistance and corrosion resistance; before performing strengthening treatment, first remove rust and oxide layer from the surface of the nut; step b, the surface hardness of the riveted nut after surface strengthening treatment should be not less than HB120, and it can effectively resist environmental corrosion; step c, after the surface strengthening treatment is completed, surface roughness detection and coating adhesion test are also required.

[0038] Step D includes the following steps: step a, developing and applying an intelligent riveting system, which integrates sensors, controllers and actuators and can monitor key parameters such as pressure, displacement and temperature during the riveting process in real time; step b, calibrating the intelligent riveting system, regularly calibrating the sensors, controllers and actuators in the system; step c, dynamically adjusting the riveting force, riveting speed and riveting time according to the real-time monitoring data through a closed-loop control system to ensure the tightness and consistency of each riveting point and reduce material deformation; step d, the closed-loop control system uses advanced algorithms, including machine learning or neural network algorithms, to continuously optimize the riveting parameters based on historical data and real-time monitoring data.

[0039] Step E includes the following steps: step a, strict quality inspection of finished riveted nuts, including but not limited to dimension measurement, mechanical property test, surface quality inspection and non-destructive inspection; step b, online quality inspection, introducing automated inspection equipment, such as machine vision system, to perform real-time inspection of nuts on the production line; step c, establishing a quality data feedback mechanism, and feeding back the inspection results to the production process in real time for optimizing process parameters; step d, the quality data feedback mechanism uses big data analysis technology to conduct in-depth mining of the collected quality data, identify potential problems in the production process, and provide a scientific basis for process improvement and product optimization.

[0040] The working principle of the embodiment of the present invention is: in the material selection and alloying treatment stage, a high-strength aluminum alloy containing trace elements such as magnesium, zinc, and copper is used as the basic material, and the microstructure and mechanical properties of the material are optimized through precise proportioning and alloying treatment. In this process, the trace element content is accurately adjusted with the help of high-precision analytical instruments, and the hardness and deformation resistance of the material are significantly improved through precise control of the heat treatment process.

[0041] The precision molding stage uses precision casting or cold forging technology, combined with computer-aided design and simulation analysis to ensure that the geometry, dimensional accuracy and internal structure of the riveted nut meet the design requirements. During the molding process, precise temperature control management is implemented, and the microstructure and phase change process of the material are effectively controlled through advanced heating and cooling systems combined with real-time monitoring technology.

[0042] During the surface strengthening treatment stage, the hardness, wear resistance and corrosion resistance of the riveted nut surface are significantly improved through shot peening, carburizing or ion implantation technology. Before strengthening treatment, the nut surface is strictly pretreated to ensure the maximum strengthening effect; at the same time, the surface quality inspection after strengthening treatment, such as surface roughness and coating adhesion test, further ensures the durability and reliability of the product.

[0043] During the intelligent riveting process, the intelligent riveting system with integrated sensors, controllers and actuators monitors the key parameters of the riveting process in real time. Through the closed-loop control system, the riveting force, speed and time are dynamically adjusted according to the real-time monitoring data to ensure the tightness and consistency of each riveting point. In this process, advanced machine learning or neural network algorithms are used to continuously optimize the riveting parameters, achieving high precision and automation of the riveting process.

[0044] In the final stage of quality inspection and feedback mechanism, strict quality inspection is implemented on the finished riveted nuts, including dimensional measurement, mechanical property testing, surface quality inspection and non-destructive testing. Automated inspection equipment, such as machine vision systems, are introduced to conduct real-time inspection of nuts on the production line to ensure the consistency and stability of product quality. At the same time, a quality data feedback mechanism is established, and big data analysis technology is used to deeply mine the collected quality data to provide a scientific basis for process improvement and product optimization.

[0045] See also Figure 1-Figure 4 In the embodiment of the present invention, step A also includes the following steps: before the alloying treatment, the aluminum alloy raw material is preheated, and the preheating temperature is controlled within a preset temperature range to eliminate the residual stress inside the raw material and improve the effect of the alloying treatment; during the alloying treatment, inert gas protection is used to prevent the alloy elements from oxidizing at high temperatures to ensure the quality of the alloying treatment; after the alloying treatment is completed, rapid cooling is performed, and the cooling rate is adjusted according to the alloy composition and expected performance to refine the grain structure.

[0046] Step B also includes the following steps: during the mold design and manufacturing process, high-precision CNC machine tools are used for processing to ensure the dimensional accuracy and surface finish of the mold to reduce material waste and finished product defects during the molding process; during the molding process, pressure sensors and temperature sensors are used to monitor the pressure and temperature in the mold in real time, and the closed-loop control system is used to automatically adjust to ensure the stability and consistency of the molding conditions; after molding, the riveted nut is subjected to stress relief annealing to eliminate the residual stress generated during the molding process.

[0047] Step C also includes the following steps: in the shot peening process, controllable shot peening intensity and coverage are used to optimize the surface residual stress distribution and improve the fatigue resistance; during carburizing treatment, the carburizing temperature and carburizing time are precisely controlled to obtain the ideal carburizing layer depth and carbon concentration distribution; in ion implantation technology, appropriate ion types and implantation energy are selected to form a dense strengthening layer on the surface.

[0048] Step D also includes the following steps: the intelligent riveting system is integrated with an adaptive control algorithm, which can automatically adjust the riveting parameters according to the characteristics of the riveting material and the position of the riveting point to achieve personalized riveting; the system has remote monitoring and fault diagnosis functions, which can monitor the operating status of the equipment in real time and promptly discover and handle potential faults.

[0049] Step E also includes the following steps: Introducing artificial intelligence and machine learning technologies to intelligently analyze and predict quality inspection data, identify potential quality problems in advance, and reduce the production of defective products; based on quality data feedback, using advanced quality management tools such as Six Sigma to continuously optimize the production process.

[0050] The working principle of the embodiment of the present invention is: before the alloying treatment in step A, the aluminum alloy raw material is preheated, and the preheating temperature is precisely controlled within a preset range, in order to pre-eliminate the residual stress inside the raw material, create more favorable conditions for the subsequent alloying treatment, and thus improve the effect of the alloying treatment. During the alloying treatment, an inert gas protection technology is used to effectively prevent the oxidation of alloy elements in a high temperature environment, ensuring that the quality of the alloying treatment is not affected by external factors.

[0051] In the mold design and manufacturing process of step B, high-precision CNC machine tools are used for precision machining to ensure that the dimensional accuracy and surface finish of the mold meet extremely high standards, thereby significantly reducing material waste and finished product defects during the molding process. During the molding stage, the pressure and temperature in the mold are monitored in real time through pressure sensors and temperature sensors, and automatically adjusted with the help of a closed-loop control system to ensure the stability and consistency of the molding conditions, providing a solid guarantee for the production of high-quality riveted nuts. In the surface strengthening process of step C, shot peening uses controllable shot peening intensity and coverage to accurately optimize the surface residual stress distribution and significantly improve the product's fatigue resistance.

[0052] The intelligent riveting system in step D integrates an adaptive control algorithm, which can automatically adjust the riveting parameters according to the characteristics of the riveted material and the specific location of the riveting point, realize personalized riveting, and ensure the tightness and consistency of each riveting point. In the quality inspection and feedback mechanism of step E, artificial intelligence and machine learning technology are introduced to intelligently analyze and predict the quality inspection data, which can identify potential quality problems in advance and effectively reduce the production of defective products.

[0053] See also Figure 1-Figure 4 In the embodiment of the present invention, the surface strengthening treatment in step C also includes the following steps: step S1, during shot peening, ceramic or glass beads are used as shot peening media to reduce damage to the material surface; step S2, during carburizing treatment, vacuum carburizing technology is used to reduce oxidation and decarburization during the carburizing process; step S3, in ion implantation technology, high-energy ion beams, such as nitrogen ions or carbon ions, are used to form a nano-composite strengthening layer with excellent wear resistance and corrosion resistance by precisely controlling the implantation energy and dosage.

[0054] The working principle of the embodiment of the present invention is as follows: in the shot peening step S1, ceramic or glass beads are particularly used as shot peening media. Compared with traditional metal shots, ceramic or glass beads have higher hardness and smaller particle size, and can more effectively generate compressive residual stress without damaging the surface of the material, thereby improving the fatigue resistance of the material. In addition, the round characteristics of ceramic or glass beads also help to reduce scratches and damage to the material surface during the shot peening process, ensuring that the surface quality after treatment is better.

[0055] In the carburizing step S2, vacuum carburizing technology is introduced. This technology effectively avoids oxidation and decarburization during the carburizing process by performing carburizing in a vacuum environment. The vacuum environment can significantly reduce the oxygen content, thereby preventing the carburized layer from undergoing oxidation reaction at high temperatures, which leads to a decrease in the quality and performance of the carburized layer. At the same time, vacuum carburizing technology can also more accurately control the depth and carbon concentration distribution of the carburized layer, further improving the wear resistance and hardness of the product.

[0056] In the ion implantation technology step S3, high-energy ion beams, such as nitrogen ions or carbon ions, are used for surface strengthening treatment. These high-energy ion beams can form a nano-composite strengthening layer with excellent wear resistance and corrosion resistance on the material surface by precisely controlling the implantation energy and dosage. The nano-composite strengthening layer is composed of high-hardness nano-scale carbide or nitride particles and a matrix material, and has extremely high hardness and wear resistance, which can significantly improve the service life of the product.

[0057] Working principle: The high-toughness and lightweight riveted nut production method in the embodiment of the present invention adopts more sophisticated and professional technical means in the surface strengthening treatment stage. In the shot peening strengthening step, ceramic or glass beads are specially selected as shot peening media. These media have high hardness and small particle size characteristics, which can effectively improve the fatigue resistance of the material without damaging the surface of the material. Compared with traditional metal shots, the round characteristics of ceramic or glass beads reduce scratches and damage to the surface of the material, ensuring the surface quality after treatment.

[0058] The carburizing step introduces vacuum carburizing technology, which effectively avoids oxidation and decarburization during the carburizing process by performing carburizing in a vacuum environment. The vacuum environment significantly reduces the oxygen content and prevents the carburized layer from oxidizing at high temperatures, thereby ensuring the quality and performance of the carburized layer. At the same time, vacuum carburizing technology can more accurately control the depth and carbon concentration distribution of the carburized layer, further improving the wear resistance and hardness of the product.

[0059] In the ion implantation technology step, high-energy ion beams are used for surface strengthening treatment. These high-energy ion beams can form a nano-composite strengthening layer with excellent wear resistance and corrosion resistance on the material surface by precisely controlling the implantation energy and dosage. The nano-composite strengthening layer is composed of high-hardness nano-scale carbide or nitride particles and matrix materials, and has extremely high hardness and wear resistance, which significantly improves the service life of the product.

[0060] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for producing a high-strength and lightweight riveted nut, characterized in that: The following steps are involved: Step A, material selection and alloying treatment, selecting a high-strength aluminum alloy as a base material, and performing alloying treatment on the selected aluminum alloy; Alloying parameter optimization: according to the specific composition of the selected aluminum alloy, the best alloying treatment temperature, time and cooling method are determined through experiments; Step B, precision molding, using precision casting or cold forging technology to further optimize mechanical properties; Step C: surface strengthening treatment, performing surface strengthening treatment on the formed riveted nut to extend its service life; Step D, intelligent riveting process, through a closed-loop control system, ensures the tightness and consistency of each riveting point; Step E, quality inspection and feedback mechanism, implements strict quality inspection on the finished riveted nuts and feeds the inspection results back to the production process in real time.

2. A method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step A comprises the following steps: Step a, selecting a high-strength aluminum alloy containing trace elements such as magnesium, zinc, and copper as the base material, wherein the aluminum alloy has a tensile strength of not less than 400 MPa, a yield strength of not less than 300 MPa, and a density of less than 2.7 g / cm 3 ; Step b: accurately mix the trace elements, use high-precision analytical instruments to detect and adjust the content of elements such as magnesium, zinc, and copper to ensure that the alloy composition meets the design requirements; alloy the selected aluminum alloy, adjust the content ratio of the alloy elements, and optimize the heat treatment process to improve the comprehensive mechanical properties of the material, especially hardness and deformation resistance; Step c: the alloyed material must undergo strict heat treatment quality inspection, including but not limited to hardness test, tensile test and metallographic analysis.

3. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step B comprises the following steps: Step a, using precision casting or cold forging technology, combined with computer-aided design and simulation analysis, to accurately control the geometric shape, dimensional accuracy and internal structure of the riveted nut to ensure that the product is lightweight while maintaining high strength and toughness; Step b, using computer-aided design software to perform accurate three-dimensional modeling, and using computer-aided manufacturing technology to design and manufacture the mold; Step c: during the molding process, precise temperature control is implemented to control the microstructure and phase change process of the material; Step d: Temperature control management uses advanced heating and cooling systems combined with real-time monitoring technology to ensure that temperature fluctuations during the molding process are controlled within ±6°C.

4. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step C comprises the following steps: Step a, performing surface strengthening treatment on the formed riveted nut, including but not limited to shot peening, carburizing or ion implantation technology, to improve surface hardness, wear resistance and corrosion resistance; before performing strengthening treatment, first remove rust and oxide layer from the surface of the nut; Step b, the surface hardness of the riveted nut after surface strengthening treatment should be no less than HB120, and it can effectively resist environmental corrosion; Step c: After the surface strengthening treatment is completed, surface roughness detection and coating adhesion test are also required.

5. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step D comprises the following steps: Step a, develop and apply an intelligent riveting system that integrates sensors, controllers and actuators to monitor key parameters such as pressure, displacement and temperature during the riveting process in real time; Step b, intelligent riveting system calibration, regularly calibrating the sensors, controllers and actuators in the system; Step c, dynamically adjusting the riveting force, riveting speed and riveting time according to real-time monitoring data through a closed-loop control system to ensure the tightness and consistency of each riveting point and reduce material deformation; Step d: The closed-loop control system uses advanced algorithms, including machine learning or neural network algorithms, to continuously optimize riveting parameters based on historical data and real-time monitoring data.

6. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step E comprises the following steps: Step a, strict quality inspection of the finished riveted nuts, including but not limited to dimension measurement, mechanical property testing, surface quality inspection and non-destructive testing; Step b, online quality inspection, introduces automated inspection equipment, such as a machine vision system, to perform real-time inspection of nuts on the production line; Step c: Establish a quality data feedback mechanism to feed back the test results to the production process in real time for optimizing process parameters; Step d: The quality data feedback mechanism uses big data analysis technology to conduct in-depth mining of the collected quality data, identify potential problems in the production process, and provide a scientific basis for process improvement and product optimization.

7. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step A also includes the following steps: before the alloying treatment, the aluminum alloy raw material is preheated, and the preheating temperature is controlled within a preset temperature range to eliminate the residual stress inside the raw material and improve the effect of the alloying treatment; during the alloying treatment, inert gas protection is used to prevent the alloy elements from oxidizing at high temperatures to ensure the quality of the alloying treatment; after the alloying treatment is completed, rapid cooling is performed, and the cooling rate is adjusted according to the alloy composition and expected performance to refine the grain structure.

8. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step B also includes the following steps: in the process of designing and manufacturing the mold, high-precision CNC machine tools are used for processing to ensure the dimensional accuracy and surface finish of the mold, so as to reduce material waste and finished product defects in the molding process; during the molding process, pressure sensors and temperature sensors are used to monitor the pressure and temperature in the mold in real time, and the closed-loop control system is used to automatically adjust to ensure the stability and consistency of the molding conditions; after molding, the riveted nut is subjected to stress relief annealing to eliminate the residual stress generated during the molding process; The step C also includes the following steps: in the shot peening process, controllable shot peening intensity and coverage are used to optimize the surface residual stress distribution and improve the fatigue resistance; during carburizing treatment, the carburizing temperature and carburizing time are accurately controlled to obtain the ideal carburized layer depth and carbon concentration distribution; in the ion implantation technology, appropriate ion types and implantation energy are selected to form a dense strengthening layer on the surface.

9. The method for producing a high-strength and lightweight riveted nut according to claim 1, characterized in that: The step D also includes the following steps: the intelligent riveting system is integrated with an adaptive control algorithm, which can automatically adjust the riveting parameters according to the characteristics of the riveting material and the position of the riveting point to achieve personalized riveting; the system has remote monitoring and fault diagnosis functions, which can monitor the operating status of the equipment in real time, and promptly discover and handle potential faults; The step E also includes the following steps: introducing artificial intelligence and machine learning technologies to intelligently analyze and predict quality inspection data, identify potential quality problems in advance, and reduce the generation of defective products; based on quality data feedback, using advanced quality management tools such as Six Sigma to continuously optimize the production process.

10. The method for producing a high-strength and lightweight riveted nut according to claim 8, characterized in that: The surface strengthening treatment in step C also includes the following steps: Step S1, during shot peening, ceramic or glass beads are used as shot peening media to reduce damage to the material surface; Step S2, during the carburizing process, vacuum carburizing technology is used to reduce oxidation and decarburization during the carburizing process; Step S3, in ion implantation technology, high energy ion beams, such as nitrogen ions or carbon ions, are used to form a nano-composite strengthening layer with excellent wear resistance and corrosion resistance by precisely controlling the implantation energy and dosage.

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