Composite forging method for high-performance truck cross arm

Abstract

The invention relates to the technical field of forging, and discloses a composite forging method of a high-performance truck cross arm, which comprises the following steps: S1, a composite material is prepared, the composite material comprises a high-strength steel or aluminum alloy metal matrix and nano particles, the nano particles are selected from carbon nano tubes and nano silicon particles, and the nano silicon particles are selected from carbon nano tubes and nano silicon particles; the adding proportion of the nano particles is 0.5%-2% of the weight of the matrix; and S2, a plurality of miniature intelligent sensors are embedded into the composite material, the sensors are arranged to monitor the stress, temperature and internal crack development of the cross arm, and the sensors are packaged in high-temperature-resistant silica gel to protect the integrity of the sensors in subsequent processing. According to the cross arm, the metal matrix is reinforced through the nano materials, the tensile strength of the cross arm is remarkably improved, the fatigue life of the cross arm is remarkably prolonged, the metal structure is optimized through the nano materials on the micro level, the bearing capacity and the crack resistance of the cross arm are enhanced, the cross arm can bear higher working loads and longer-time fatigue circulation, and the cross arm is suitable for high-strength application scenes.

Description

Technical Field

[0001] The invention relates to the technical field of forging, in particular to a composite forging method for a high-performance truck cross arm. Background Art

[0002] In the automotive industry, truck cross arms are key components of the vehicle's suspension system, and their performance directly impacts the vehicle's load-bearing capacity and driving stability. The design and manufacture of high-performance truck cross arms has long been a key area of ​​research for improving the operating efficiency and safety of heavy-duty vehicles. With technological advancements, the performance requirements for truck cross arms are becoming increasingly demanding, particularly in terms of strength, durability, and adaptability to harsh environments.

[0003] Existing manufacturing technologies primarily rely on traditional metal forging and heat treatment methods to produce truck wishbones. While widely used in industry, these methods typically utilize only a single metal material, such as high-strength steel. While proper heat treatment can improve the material's mechanical properties, these traditional techniques often fail to fully utilize new materials and technologies to optimize product performance.

[0004] While existing technologies are capable of meeting basic industry standards, several significant challenges remain. First, traditional methods are limited in improving the tensile strength and fatigue resistance of materials, which restricts the use of cross arms in extreme conditions. Second, the lack of effective monitoring and self-healing mechanisms prevents the product from self-repairing even when it suffers minor damage, shortening its service life and increasing maintenance costs. Furthermore, insufficient temperature and pressure control in traditional production processes leads to inconsistencies in product quality and performance, impacting overall manufacturing efficiency and product reliability. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention provides a composite forging method for high-performance truck cross arms, which solves the problems of traditional forging methods in terms of strength, lack of monitoring and performance inconsistency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A composite forging method for a high-performance truck cross arm comprises the following steps: S1. Preparing a composite material comprising a metal matrix of high-strength steel or aluminum alloy and nanoparticles, wherein the nanoparticles are selected from carbon nanotubes and nanosilicon particles, and the addition ratio of the nanoparticles is 0.5% to 2% by weight of the matrix; S2. Embedding a plurality of micro smart sensors into the composite material, wherein the sensors are arranged to monitor stress, temperature, and development of internal cracks in the cross arm, and the sensors are encapsulated in high-temperature resistant silicone to protect their integrity during subsequent processing; S3, forging the composite material into a cross-arm shape in a high-pressure forging machine, wherein the forging process is performed at a temperature of 450° C. to 950° C. and a pressure of 300 MPa to 600 MPa to ensure that the material fully flows and fills the die; S4, heat treating the forged cross arm, including quenching and tempering steps, to optimize its mechanical properties; S5. applying a self-healing coating on the forged cross arm, wherein the coating comprises microcapsules capable of automatically releasing a repairing agent when the cross arm surface is damaged; S6. Using wireless technology to connect the smart sensor to an external monitoring system to transmit data about the cross arm during use in real time; S7. Perform performance tests on the forged and coated cross arms, including load tests and durability tests.

[0007] Preferably, the metal matrix is ​​42CrMo4 high-strength steel.

[0008] Preferably, the metal matrix is ​​7075 aluminum alloy.

[0009] Preferably, the nanoparticles are added in an amount of 1% by weight of the matrix and are uniformly mixed with the metal matrix in an inert atmosphere for 24 hours by high-energy ball milling technology.

[0010] Preferably, the micro intelligent sensor includes at least one strain sensor and at least one temperature sensor, and the sensor is connected to an external monitoring system via a wireless manner.

[0011] Preferably, the forging temperature is 950°C or 450°C, and the forging pressure is 500MPa.

[0012] Preferably, the quenching step of the heat treatment uses a water cooling method, and the tempering step uses an air cooling method.

[0013] Preferably, the average diameter of the microcapsules of the self-healing coating is 50 microns, and the repairing agent contained therein is epoxy resin and a corresponding hardener.

[0014] Preferably, the performance test includes a static load test and a dynamic fatigue test performed using computer-aided design and simulation technology.

[0015] Preferably, the method further comprises designing and simulating a forging die by computer-aided design software during the forging process to optimize the flow of the composite material in the die and the distribution of the nanoparticles.

[0016] The present invention provides a composite forging method for a high-performance truck cross arm. It has the following beneficial effects: 1. This invention significantly improves the tensile strength and fatigue life of the cross arm by strengthening the metal matrix with nanomaterials. These nanomaterials optimize the metal structure at the microscopic level, enhancing its load-bearing capacity and crack resistance. This enables the cross arm to withstand higher loads and longer fatigue cycles, making it suitable for high-intensity applications.

[0017] 2. By applying an advanced self-healing coating, this invention effectively improves the crossarm's corrosion resistance and overall durability in harsh environments. Microcapsules in the self-healing coating automatically rupture upon detecting tiny cracks or damage, releasing a repair agent that quickly seals the cracks and prevents further corrosion and damage. This coating is particularly suitable for applications with frequent contact with corrosive substances or extreme climate conditions.

[0018] 3. The integrated intelligent sensors and feedback control system provide comprehensive, real-time health monitoring for the crossbar. These sensors collect real-time data on stress, temperature, and potential crack development. Using advanced data analysis techniques, the system predicts potential failures and promptly adjusts production and operating parameters, or triggers maintenance alerts. This intelligent monitoring significantly improves crossbar operational safety and maintenance efficiency, reducing unexpected failures and repair costs.

[0019] 4. Our precise temperature control and pressure adjustment technology during the forging process ensures uniform material properties and precision in the finished product. By meticulously controlling forging and heat treatment parameters, each crossbar meets the highest quality standards, ensuring batch-to-batch consistency. This precise control is essential to meeting stringent industry standards and customer demands.

[0020] 5. The present invention integrates nanomaterials and self-healing technology, which not only improves the performance of the cross arm, but also helps reduce material waste and long-term environmental impact. The self-healing coating extends the service life of the product, reduces material replacement and waste due to damage, and meets the needs of modern manufacturing to transform towards sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Flowchart of the present invention. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0023] Example 1: Please see the attached Figure 1 The embodiment of the present invention provides a composite forging method for a high-performance truck cross arm, comprising the following steps: S1. Material preparation In this embodiment, the metal matrix selected is 42CrMo4 high-strength steel, which is widely used in automotive structural components with high load requirements due to its superior mechanical properties and good hardening ability.

[0024] Carbon nanotubes and nanosilicon particles were chosen as reinforcements. These nanomaterials are known to significantly improve the tensile strength and fatigue resistance of materials. The nanoparticles were added to the metal powder at a weight ratio of 1%, ensuring uniform dispersion of the nanoparticles through physical mixing and subsequent ball milling.

[0025] Ball milling was performed in a controlled argon atmosphere to avoid oxidation and maintain the chemical purity of the powder. The ball milling time was set to 24 hours to ensure sufficient integration of the nanomaterials with the metal powder to form a composite material with an optimized microstructure.

[0026] S2. Integration of smart sensors For this example, the selection and integration of micro smart sensors is crucial. The sensors selected include strain and temperature sensors designed to withstand the high temperature and high pressure forging conditions.

[0027] The sensors are encapsulated in a special high-temperature resistant silicone and precisely positioned within the composite material using high-precision 3D printing technology. This step is critical to ensure that the sensors can monitor changes in stress and temperature at key locations on the cross arm, thereby assessing the integrity of the structure in real time.

[0028] The sensor's wireless communication module enables it to transmit data to an external monitoring system in real time during operation, enabling dynamic monitoring of the cross arm status.

[0029] S3, composite forging After pre-treatment, the composite material is fed into an automated high-pressure forging machine for forming. The forging process is carried out under specific temperature and pressure. For 42CrMo4 high-strength steel, the forging temperature is set to 950°C and the pressure is set to 500MPa.

[0030] These parameters are carefully selected based on material flowability and molding requirements, ensuring that the material completely fills the mold while maintaining a uniform distribution of nanoparticles.

[0031] Temperature and pressure control during the forging process are critical to ensuring the dimensional accuracy and mechanical properties of the finished product.

[0032] S4. Heat treatment After forging, the crossarm undergoes heat treatment to optimize its mechanical properties. The quenching step is performed at 850°C, rapidly cooling the crossarm to form a uniform martensitic structure, enhancing the crossarm's hardness and strength.

[0033] The subsequent tempering process is carried out at 450°C, which reduces internal stresses and increases the toughness of the material through slow cooling. This heat treatment process is tailored to the characteristics of the steel to achieve the best balance of properties.

[0034] S5. Application of self-healing coating The self-healing coating was developed to enhance the crossarm's long-term usability and resistance to environmental corrosion.

[0035] The microcapsules in the coating contain pre-configured epoxy resin and hardener. These microcapsules can automatically rupture when microcracks appear on the surface of the cross arm, quickly releasing the repair agent and triggering a curing reaction, thereby sealing the cracks.

[0036] The coating is applied using high-precision spray equipment, ensuring uniformity and integrity of the coating.

[0037] S6. Performance testing and monitoring After all manufacturing steps are completed, the cross arm will undergo a series of performance tests, including but not limited to static load tests and dynamic fatigue tests. These tests are carried out under simulated actual use conditions to verify that the cross arm meets all design specifications.

[0038] The integration of sensors enables real-time data collection during testing, providing a scientific basis for performance evaluation and future maintenance of the cross arm.

[0039] Example 2: An embodiment of the present invention provides a composite forging method for a high-performance truck cross arm, comprising the following steps: S1. Material preparation In this preferred embodiment, the high-pressure forging process utilizes precise temperature control technology to further optimize the composite material's microstructure and properties. In addition to forging under standard conditions of 950°C and 500 MPa, a real-time temperature monitoring system is introduced to ensure temperature uniformity and stability during the forging process. By embedding multiple temperature sensors within the mold and monitoring the temperature distribution in real time, the composite material maintains a uniform temperature within the mold, preventing uneven material properties caused by temperature fluctuations.

[0040] S2. Integration of smart sensors For this example, the selection and integration of micro smart sensors is crucial. The sensors selected include strain and temperature sensors designed to withstand the high temperature and high pressure forging conditions.

[0041] The sensors are encapsulated in a special high-temperature resistant silicone and precisely positioned within the composite material using high-precision 3D printing technology. This step is critical to ensure that the sensors can monitor changes in stress and temperature at key locations on the cross arm, thereby assessing the integrity of the structure in real time.

[0042] The sensor's wireless communication module enables it to transmit data to an external monitoring system in real time during operation, enabling dynamic monitoring of the cross arm status.

[0043] S3, composite forging After pre-treatment, the composite material is fed into an automated high-pressure forging machine for forming. The forging process is carried out under specific temperature and pressure. For 42CrMo4 high-strength steel, the forging temperature is set to 950°C and the pressure is set to 500MPa.

[0044] These parameters are carefully selected based on material flowability and molding requirements, ensuring that the material completely fills the mold while maintaining a uniform distribution of nanoparticles.

[0045] Temperature and pressure control during the forging process are critical to ensuring the dimensional accuracy and mechanical properties of the finished product.

[0046] S4. Heat treatment After forging, the crossarm undergoes heat treatment to optimize its mechanical properties. The quenching step is performed at 850°C, rapidly cooling the crossarm to form a uniform martensitic structure, enhancing the crossarm's hardness and strength.

[0047] The subsequent tempering process is carried out at 450°C, which reduces internal stresses and increases the toughness of the material through slow cooling. This heat treatment process is tailored to the characteristics of the steel to achieve the best balance of properties.

[0048] S5. Application of self-healing coating The self-healing coating was developed to enhance the crossarm's long-term usability and resistance to environmental corrosion.

[0049] The microcapsules in the coating contain pre-configured epoxy resin and hardener. These microcapsules can automatically rupture when microcracks appear on the surface of the cross arm, quickly releasing the repair agent and triggering a curing reaction, thereby sealing the cracks.

[0050] The coating is applied using high-precision spray equipment, ensuring uniformity and integrity of the coating.

[0051] S6. Performance testing and monitoring After all manufacturing steps are completed, the cross arm will undergo a series of performance tests, including but not limited to static load tests and dynamic fatigue tests. These tests are carried out under simulated actual use conditions to verify that the cross arm meets all design specifications.

[0052] The integration of sensors enables real-time data collection during testing, providing a scientific basis for performance evaluation and future maintenance of the cross arm.

[0053] Unlike Example 1, Example 2 employs precise temperature control technology during the high-pressure forging process to further optimize the microstructure and properties of the composite material. In addition to forging under standard conditions of 950°C and 500 MPa, a real-time temperature monitoring system is introduced to ensure temperature uniformity and stability during the forging process. By embedding multiple temperature sensors within the mold and monitoring the temperature distribution in real time, the temperature of the composite material in the mold is uniform, preventing uneven material properties caused by temperature fluctuations.

[0054] This ensures optimal mechanical properties during the forging process, especially in complex cross-arm shapes, and prevents microstructural defects caused by uneven temperatures. Furthermore, precise temperature control helps improve production repeatability and product consistency.

[0055] Example 3: An embodiment of the present invention provides a composite forging method for a high-performance truck cross arm, comprising the following steps: S1. Material preparation In this embodiment, the metal matrix selected is 42CrMo4 high-strength steel, which is widely used in automotive structural components with high load requirements due to its superior mechanical properties and good hardening ability.

[0056] Carbon nanotubes and nanosilicon particles were chosen as reinforcements. These nanomaterials are known to significantly improve the tensile strength and fatigue resistance of materials. The nanoparticles were added to the metal powder at a weight ratio of 1%, ensuring uniform dispersion of the nanoparticles through physical mixing and subsequent ball milling.

[0057] Ball milling was performed in a controlled argon atmosphere to avoid oxidation and maintain the chemical purity of the powder. The ball milling time was set to 24 hours to ensure sufficient integration of the nanomaterials with the metal powder to form a composite material with an optimized microstructure.

[0058] S2. Integration of smart sensors In this preferred embodiment, an intelligent feedback control system is integrated into the crossarm production process, specifically during the forging and heat treatment steps. This system utilizes real-time data collected from microsensors embedded in the crossarm (such as stress, temperature, and potential crack development). Advanced algorithms analyze this data and automatically adjust forging pressure, temperature, or heat treatment parameters. Furthermore, if sensors detect signs of performance degradation during crossarm use, the intelligent feedback system can trigger an alert, recommending maintenance or replacement.

[0059] System integration and configuration The core of the intelligent feedback control system is its integrated micro sensor and central processing unit (CPU). The system design is as follows: Microsensor Deployment: Type and function: Sensors mainly include strain sensors, temperature sensors, and crack monitoring sensors. These sensors are precisely placed in the critical load-bearing and heat-sensitive areas of the cross arm.

[0060] Layout strategy: The sensor layout was based on finite element analysis (FEA), which predicted the areas of highest stress and temperature that the cross-arm might experience under typical operating conditions.

[0061] Data collection and transmission: Real-time data acquisition: All sensors are equipped with high-speed data acquisition modules that can monitor and record stress, temperature and the development of micro-cracks in real time.

[0062] Wireless data transmission: The collected data is sent to the central processing unit through the wireless module, realizing real-time data upload and analysis.

[0063] Central Processing Unit (CPU): Data processing and analysis: The CPU uses advanced algorithms, such as machine learning and pattern recognition, to analyze sensor data and assess the crossarm’s health and performance indicators.

[0064] Decision support: Based on data analysis results, the CPU can automatically adjust the operating parameters of forging machines and heat treatment equipment, such as temperature, pressure and cooling rate, to optimize product quality and performance.

[0065] Operation principle and feedback mechanism The intelligent feedback control system plays a core role in the production and use of the cross arm: Feedback adjustment during production: Forging process: During the forging process, if sensors detect that stress or temperature deviates from the preset range, the system will instantly adjust forging parameters such as heating temperature and applied pressure to ensure that material properties are not affected.

[0066] Heat treatment process: During the heat treatment process, the system automatically adjusts the temperature and time of quenching and tempering according to the response of the material to optimize the microstructure and mechanical properties.

[0067] Performance monitoring and maintenance warning during the use phase: Performance Monitoring: The system continuously monitors the crossarm in use, analyzes stress and fatigue data, and predicts possible failures.

[0068] Early warning and maintenance recommendations: If performance degradation or potential structural failure is detected, the system will issue an early warning and send repair or replacement recommendations to the maintenance team.

[0069] The intelligent feedback control system makes the cross-arm production process more precise and controllable, significantly improving product consistency and reliability. During the operational phase, the system proactively identifies issues and potential failures, significantly reducing unplanned downtime and repair costs and extending product life. Furthermore, the system provides data support for ongoing process optimization, providing manufacturers with in-depth production insights and quality control capabilities.

[0070] S3, composite forging After pre-treatment, the composite material is fed into an automated high-pressure forging machine for forming. The forging process is carried out under specific temperature and pressure. For 42CrMo4 high-strength steel, the forging temperature is set to 950°C and the pressure is set to 500MPa.

[0071] These parameters are carefully selected based on material flowability and molding requirements, ensuring that the material completely fills the mold while maintaining a uniform distribution of nanoparticles.

[0072] Temperature and pressure control during the forging process are critical to ensuring the dimensional accuracy and mechanical properties of the finished product.

[0073] S4. Heat treatment After forging, the crossarm undergoes heat treatment to optimize its mechanical properties. The quenching step is performed at 850°C, rapidly cooling the crossarm to form a uniform martensitic structure, enhancing the crossarm's hardness and strength.

[0074] The subsequent tempering process is carried out at 450°C, which reduces internal stresses and increases the toughness of the material through slow cooling. This heat treatment process is tailored to the characteristics of the steel to achieve the best balance of properties.

[0075] S5. Application of self-healing coating The self-healing coating was developed to enhance the crossarm's long-term usability and resistance to environmental corrosion.

[0076] The microcapsules in the coating contain pre-configured epoxy resin and hardener. These microcapsules can automatically rupture when microcracks appear on the surface of the cross arm, quickly releasing the repair agent and triggering a curing reaction, thereby sealing the cracks.

[0077] The coating is applied using high-precision spray equipment, ensuring uniformity and integrity of the coating.

[0078] S6. Performance testing and monitoring After all manufacturing steps are completed, the cross arm will undergo a series of performance tests, including but not limited to static load tests and dynamic fatigue tests. These tests are carried out under simulated actual use conditions to verify that the cross arm meets all design specifications.

[0079] The integration of sensors enables real-time data collection during testing, providing a scientific basis for performance evaluation and future maintenance of the cross arm.

[0080] Unlike Example 1, Example 3 utilizes an intelligent feedback control system to make the cross-arm production process more precise and controllable, significantly improving product consistency and reliability. During the operational phase, the system proactively identifies issues and potential failures, significantly reducing unplanned downtime and repair costs and extending product lifespan. Furthermore, the system provides data support for ongoing process optimization, providing manufacturers with in-depth production insights and quality control capabilities.

[0081] Table 1 Comparison of experimental data of embodiment Example 1 Example 2 Example 3 tensile strength 850MPa 900MPa 920MPa Fatigue life 500000 550000 600000 hardness 300HB 320HB 330HB Corrosion resistance (salt spray test) 96h 120h 150h High temperature stability 98% 99.5% 99% Monitoring accuracy 100% 99.5% 98% Warning response time 10s 5s 2s Automatic adjustment effect good excellent Excellent With the progress from Example 1 to Example 3, the mechanical and environmental performance of the crossbar has been significantly improved. In particular, the integration of the intelligent monitoring and feedback system has greatly optimized the production and use of the crossbar. The intelligent feedback system in Example 3 not only improves the production quality of the crossbar, but also greatly improves maintenance efficiency and the service life of the crossbar through real-time monitoring and rapid response mechanisms.

[0082] Comparative Example 1: This comparative example 1 discloses a composite forging method for a high-performance truck cross arm, comprising the following steps: Material preparation: Select standard 42CrMo4 high-strength steel without nanomaterial reinforcement.

[0083] Forging: Carried out at conventional temperatures and pressures, usually without real-time monitoring.

[0084] Heat treatment: basic quenching and tempering without precise temperature control.

[0085] Coating application: Apply traditional protective coating without self-healing function.

[0086] Performance testing: Perform basic load and fatigue tests.

[0087] Table 2 Comparison table of comparative example experimental data Example 1 Comparative Example 1 tensile strength 850MPa 800MPa Fatigue life 500000 400000 hardness 300HB 280HB Corrosion resistance (salt spray test) 96h 72h High temperature stability 98% 90% Monitoring accuracy 100% - Warning response time 10s - Automatic adjustment effect good - From the above data, it can be seen that the embodiment of the present invention outperforms the traditional method in all test indicators: Tensile Strength and Fatigue Life: By using nanomaterials for reinforcement, the embodiments of the present invention show higher tensile strength and longer fatigue life.

[0088] Hardness and Corrosion Resistance: This invention provides higher hardness and significantly improved corrosion resistance through precisely controlled heat treatment and an innovative self-healing coating.

[0089] High temperature stability: Precise temperature control technology ensures performance stability under extreme conditions.

[0090] Intelligent monitoring and feedback system: provides real-time monitoring accuracy and rapid response warning, significantly improving maintenance efficiency and the service life of the cross arm.

[0091] While 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 variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A composite forging method for a high-performance truck cross arm, characterized in that: The following steps are involved: S1. preparing a composite material, the composite material comprising a metal matrix of high-strength steel or aluminum alloy and nanoparticles, wherein the nanoparticles are selected from carbon nanotubes and nano-silicon particles, and the addition ratio of the nanoparticles is 0.5% to 2% of the weight of the matrix; S2, embedding a plurality of micro smart sensors into the composite material, wherein the sensors are arranged to monitor the stress, temperature and development of internal cracks of the cross arm, and the sensors are encapsulated in high temperature resistant silicone to protect their integrity in subsequent processing; S3, forging the composite material into a cross arm shape in a high pressure forging machine, the forging process is carried out under the conditions of a temperature of 450°C to 950°C and a pressure of 300MPa to 600MPa to ensure that the material fully flows and fills the die; S4, heat treating the forged cross arm, including quenching and tempering steps, to optimize its mechanical properties; S5. applying a self-healing coating on the forged cross arm, wherein the coating comprises microcapsules that can automatically release a repairing agent when the surface of the cross arm is damaged; S6. Use wireless technology to connect the smart sensor to an external monitoring system to transmit data of the cross arm during use in real time; S7. Perform performance tests on the forged and coated cross arms, including load tests and durability tests.

2. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The metal matrix is ​​42CrMo4 high-strength steel.

3. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The metal matrix is ​​7075 aluminum alloy.

4. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The nanoparticles are added in an amount of 1% by weight of the matrix and are uniformly mixed with the metal matrix in an inert atmosphere for 24 hours by high-energy ball milling technology.

5. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The micro intelligent sensor includes at least one strain sensor and at least one temperature sensor, and the sensor is connected to an external monitoring system in a wireless manner.

6. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The forging temperature is 950°C or 450°C, and the forging pressure is 500MPa.

7. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The quenching step of the heat treatment uses a water cooling method, and the tempering step uses an air cooling method.

8. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The average diameter of the microcapsules of the self-healing coating is 50 microns, and the repairing agent contained in the microcapsules is epoxy resin and a corresponding hardener.

9. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The performance tests include static load tests and dynamic fatigue tests using computer-aided design and simulation techniques.

10. The composite forging method of a high-performance truck cross arm according to claim 1, characterized in that: The method further includes designing and simulating a forging die by computer-aided design software during the forging process to optimize the flow of the composite material in the die and the distribution of the nanoparticles.

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