Laser shock, high-frequency induction and plasma beam cooperative strengthening device and method

Abstract

The invention discloses a laser shock, high-frequency induction and plasma beam synergistic strengthening device and method, and belongs to the technical field of material surface strengthening treatment.The strengthening device comprises a high-frequency induction heating module used for preheating a workpiece induction coil to be machined; the plasma heating module is used for further optimizing the preheated workpiece; the laser generating equipment is used for emitting a laser beam and carrying out impact strengthening treatment on the optimized workpiece; the master control module is used for controlling cooperative operation of the high-frequency induction heating module, the plasma heating module and the laser generation equipment; wherein the master control module comprises an industrial control computer and a rapid charging and discharging unit, the industrial control computer is used for integrally controlling operation of the device, and the rapid charging and discharging unit is used for providing electric energy supply; by means of the design, all-directional strengthening from the surface to the interior of the material can be achieved, and the limitation of a single strengthening technology is overcome.

Description

Technical Field

[0001] The present invention belongs to the technical field of material surface strengthening treatment, and particularly relates to a device and method for synergistic strengthening of laser shock, high-frequency induction, and plasma beam. Background Art

[0002] In the current machinery industry, especially in fields such as aerospace, construction machinery, ocean engineering, and shipbuilding, the reliability requirements for service mechanical components are getting higher and higher; although traditional laser shock and high-frequency induction heating technologies have improved the comprehensive performance of materials to a certain extent, there are still some limitations;

[0003] For example, a method for surface strengthening treatment of metal materials by coupling electroplasticity and ultrasonic rolling with the publication number CN104195322A. This method uses the coupling of electroplasticity and ultrasonic rolling. Although it can reduce the plastic deformation resistance of the surface layer in the processing area, due to the limited impact force of ultrasonic rolling, the strengthening is mainly concentrated on the surface layer, and it is difficult to effectively change the deep microstructures inside the material, and it is impossible to achieve all-round strengthening from the surface to the inside;

[0004] Another example is a strengthening device and method for electromagnetic-actuator-assisted laser shock compounding with the publication number CN111961836A. This method only uses electromagnetic-actuator-assisted laser shock compounding. Although the magnetic field is used to reduce the plastic deformation resistance of the workpiece surface layer, it does not combine high-frequency induction heating and plasma beam heating technologies, and it is impossible to achieve all-round strengthening of multi-field coupling;

[0005] Another example is an externally applied variable magnetic field-assisted laser shock strengthening method with the publication number CN106148672A. This method only uses an externally applied variable magnetic field to assist laser shock, without combining high-frequency induction heating and plasma beam heating technologies, and it is impossible to achieve the synergistic strengthening effect of multi-field coupling, and the strengthening effect is not significant enough;

[0006] Another example is a method and device for electroplasticity and laser shock compounding for large workpieces with the publication number CN113151665B. In actual application, the qualified rate of products of this method is relatively low, and it is impossible to ensure the stability and consistency of the strengthening process by precisely controlling the operating parameters and synergistic effects of each component like the present invention;

[0007] Therefore, the laser shock technology used in existing strengthening devices mainly acts on the material surface, and the change in the deep microstructures inside the material is limited; while high-frequency induction heating can penetrate into the material interior, but there is still room for improvement in terms of energy transfer and conversion efficiency;

[0008] In view of the deficiencies of the prior art, the present invention provides a device and method for synergistic strengthening of laser shock, high-frequency induction, and plasma beam, aiming to solve the above problems. Summary of the Invention

[0009] The object of the present invention is to overcome the deficiencies in the prior art and provide a device and method for synergistic strengthening of laser shock, high-frequency induction, and plasma beam, which can achieve all-round strengthening from the material surface to the interior and overcome the limitations of single strengthening technologies.

[0010] To achieve the above object, in a first aspect, the present invention provides a device for synergistic strengthening of laser shock, high-frequency induction, and plasma beam, and the device includes:

[0011] A high-frequency induction heating module for pre-heating the workpiece to be processed;

[0012] A plasma heating module for further optimizing the workpiece after pre-heating treatment;

[0013] A laser generating device for emitting a laser beam to perform shock strengthening treatment on the optimized workpiece;

[0014] And a total control module for controlling the coordinated operation of the high-frequency induction heating module, the plasma heating module, and the laser generating device; wherein,

[0015] The total control module includes an industrial control computer and a fast charge and discharge unit. The industrial control computer is used for overall control of the operation of the device, and the fast charge and discharge unit is used for providing power supply.

[0016] In combination with the first aspect, the high-frequency induction heating module includes a high-frequency power supply, a power controller, and an induction coil;

[0017] The high-frequency power supply is electrically connected to the total control module;

[0018] Both ends of the power controller are electrically connected to the high-frequency power supply, the fast charge and discharge unit, and the industrial control computer;

[0019] The induction coil surrounds the workpiece to be processed and is used for generating a high-frequency magnetic field to induce eddy currents inside the workpiece to achieve rapid heating.

[0020] In combination with the first aspect, the plasma heating module includes a plasma gas generator and a nozzle; the plasma gas generator is electrically connected to the industrial control computer and is used for generating plasma gas; the nozzle is used for spraying the plasma gas onto the workpiece surface.

[0021] In combination with the first aspect, the laser generating device includes a laser generator and a light guiding component; the laser generator is electrically connected to the industrial control computer; the light guiding component is used for precisely focusing the laser beam onto the workpiece surface.

[0022] In combination with the first aspect, a tungsten electrode and a fixed electrode are respectively provided above and below the workpiece. The tungsten electrode is electrically connected to the high-frequency power supply and is used to generate a plasma arc; the fixed electrode is also electrically connected to the high-frequency power supply.

[0023] In a second aspect, the present invention provides a method for synergistic strengthening of laser shock, high-frequency induction, and plasma beam. Based on the laser shock, high-frequency induction, and plasma beam synergistic strengthening device described in the first aspect, the strengthening method includes the following steps:

[0024] S1: Fix and install the workpiece to be processed on the fixed electrode, and coat an absorption layer on the area to be strengthened on the surface of the workpiece;

[0025] S2: Start the high-frequency induction heating module, and set the current parameters to preheat or locally heat the workpiece;

[0026] S3: Use the plasma gas generator and the high-frequency power supply to generate a plasma arc to preprocess the surface of the preheated or locally heated workpiece;

[0027] S4: Start the plasma heating module, heat the surface of the workpiece through a transferred arc to reduce the plastic deformation resistance of its surface layer;

[0028] S5: Adjust the current parameters of the high-frequency power supply and the parameters of the laser generating device, and simultaneously perform the composite strengthening operation of high-frequency induction heating-induced plasticity and laser shock;

[0029] S6: After repeating the composite strengthening operation multiple times, turn off the laser generating device, and detect and analyze the processed workpiece.

[0030] In combination with the second aspect, the current parameters of the high-frequency induction heating module in step S2 include: the current magnitude is 2000 - 4000A, the duty cycle is 50%, and the pulse frequency is 1500 - 3000Hz.

[0031] In combination with the second aspect, the parameters of the laser generating device in step S5 include: the intake angle is 90°, the spot diameter is 2 - 3mm, and the spot overlap rate is 50%.

[0032] In combination with the second aspect, the process parameters of the composite strengthening operation of laser shock in step S5 include: the pulse frequency is 5 - 10Hz, the power density is 5GW / cm 2 , the wavelength is 1064nm, the pulse time is 10 - 30ns, and the spot diameter is 3 - 5mm.

[0033] In a third aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the second aspect are implemented.

[0034] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0035] 1. The plasma arc beam has a unique strengthening effect:

[0036] The plasma arc beam technology is an important part of the present invention. Using the plasma arc generated by electric energy as the heat source, a plasma jet is formed through the arc and the high-speed jet of gas mixture generated in a constricted space. This jet is mainly composed of cations and electrons, has a high energy density and high activity, can quickly heat the surface of the material, and perform quenching and cladding treatment on it. The unique nozzle design can adjust the spraying angle and speed of the plasma beam, thereby precisely controlling its effect on the surface of the workpiece to be processed. Especially through the cladding treatment by the plasma arc, not only deep heating and modification are achieved, but also a wear-resistant and corrosion-resistant protective layer can be formed on the surface of ferrous metals.

[0037] 2. The synergistic strengthening effect is significantly improved:

[0038] The present invention uses electric energy to generate an arc, and in a constricted space, a gas or gas mixture is sprayed at high speed from a small hole to form a directional plasma jet. This jet has a high energy density, high temperature and high activity, and can quickly heat the surface of the workpiece to be processed. Combining high-frequency induction heating and laser shock technology, a composite multi-field strengthening effect is formed. This synergistic strengthening not only significantly reduces the plastic deformation resistance of the surface layer of the metal workpiece, reduces the work hardening phenomenon, but also effectively promotes the recrystallization of the metal material, refines the grains, thereby improving the surface hardness and comprehensive performance of the workpiece.

[0039] 3. The energy utilization is more efficient:

[0040] The plasma beam is arranged above and below the workpiece to be processed. Using the plasma arc generated by electric energy as the heat source, it has a large power density and concentrated heat, and can heat the workpiece "from the outside to the inside" in a short time through radiation and convection. High-frequency induction heating enables the energy to be directly generated "inside" and "from the inside to the outside" of the workpiece, reducing the loss during the heat transfer process, and the energy conversion efficiency can reach more than 98%. The laser generating device emits a high-intensity laser beam for spot heating. The three work together, greatly improving the energy utilization efficiency and at the same time improving the controllability of the heating area.

[0041] 3. The residual stress distribution is more uniform:

[0042] For large workpieces, the present invention forms an energy accumulation in the processing area through the superposition of high-frequency induction heating and the plastic effect of the plasma beam, effectively controlling and reducing the plastic deformation resistance of the surface layer of the metal workpiece, and reducing the work hardening phenomenon that occurs on the surface layer of the workpiece during the laser shock process. This greatly increases the depth of the residual compressive stress and constructs a compressive stress distribution that meets the three-dimensional strengthening requirements of components such as small hole structures. Brief Description of the Drawings

[0043] Figure 1 is a schematic structural diagram of the strengthening device of the present invention.

[0044] Figure 2 is a flowchart of the strengthening method of the present invention.

[0045] Wherein:

[0046] 1. Industrial control computer; 2. Fast charge and discharge unit; 3. Power controller; 4. Nozzle; 5. Cooling liquid; 6. Light guide component; 7. Laser generator; 8. Absorbing layer; 9. Workpiece; 11. High-frequency power supply; 12. Tungsten electrode; 13. Induction coil; 14. Fixed electrode; 15. Total control module; 16. Fixed clamp; 17. Plasma gas generator; 18. Transfer arc. Detailed Embodiments

[0047] The present invention will be further described below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and should not be used to limit the protection scope of the present invention.

[0048] Inventive Concept: In order to overcome the defects existing in the prior art, a laser shock, high-frequency induction, and plasma beam collaborative strengthening device and method dedicated to large workpieces are proposed. By integrating high-frequency induction heating, plasma beam heating technology, and laser shock technology, the goal of surface strengthening of metal materials is achieved.

[0049] Embodiment 1

[0050] Refer to Figure 1 , this embodiment provides a laser shock, high-frequency induction, and plasma beam collaborative strengthening device, including:

[0051] A high-frequency induction heating module for preheating the workpiece 9 to be processed;

[0052] A plasma heating module for further optimizing the workpiece 9 after preheating treatment;

[0053] A laser generating device for emitting a laser beam to perform shock strengthening treatment on the optimized workpiece 9;

[0054] And a total control module 15 for controlling the coordinated operation of the high-frequency induction heating module, the plasma heating module, and the laser generating device; wherein,

[0055] The total control module 15 includes an industrial control computer 1 and a fast charge and discharge unit 2. The industrial control computer 1 is used to overall control the operation of the device, and the fast charge and discharge unit 2 is used to provide power supply.

[0056] Specifically, in this embodiment, the high-frequency induction heating module includes a high-frequency power supply 11, a power controller 3, and an induction coil 13;

[0057] The high-frequency power supply 11 is electrically connected to the total control module 15;

[0058] Both ends of the power controller 3 are respectively electrically connected to the high-frequency power supply 11, the rapid charge and discharge unit 2, and the industrial control computer 1;

[0059] The induction coil 13 surrounds the workpiece 9 to be processed, and is used to generate a high-frequency magnetic field to induce eddy currents inside the workpiece 9, so as to achieve rapid heating.

[0060] As is well known, the high-frequency induction heating application component is an important part of the device. It uses the magnetic field generated by high-frequency current to induce eddy currents "inside" the workpiece 9 to be processed, so as to achieve rapid "from the inside to the outside" heating. This heating method not only has high efficiency, but also can precisely control the heating area and temperature, providing ideal thermoplastic conditions for subsequent plastic deformation and laser shock.

[0061] It should be noted that, in this embodiment, the plasma beam is arranged above and below the workpiece 9 to be processed. Using the plasma arc generated by electric energy as the heat source, with a large power density and concentrated heat, through "radiation" and "convection", it can heat the object "from the outside to the inside" in a short time while performing "quenching and cladding" treatment on its surface, significantly reducing the plastic deformation resistance of the surface layer of the workpiece 9, so that the laser shock can more deeply affect the material inside and form a more uniform stress distribution. The combination of the plasma beam with high-frequency induction heating and laser shock realizes the all-round strengthening from the "surface to the inside" of the material.

[0062] Specifically, in this embodiment, the plasma heating module includes a plasma gas generator 17 and a nozzle 4; the plasma gas generator 17 is electrically connected to the industrial control computer 1 and is used to generate plasma gas; the nozzle 4 is used to spray the plasma gas onto the surface of the workpiece 9.

[0063] Specifically, in this embodiment, the laser generating device includes a laser generator 7 and a light guiding component 6; the laser generator 7 is electrically connected to the industrial control computer 1; the light guiding component 6 is used to precisely focus the laser beam onto the surface of the workpiece 9.

[0064] Specifically, in this embodiment, a tungsten electrode 12 and a fixed electrode 14 are respectively arranged above and below the workpiece 9. The tungsten electrode 12 is electrically connected to the high-frequency power supply 11 and is used to generate a plasma arc; the fixed electrode 14 is also electrically connected to the high-frequency power supply 11.

[0065] It should be noted that in this embodiment, the laser generator 7 is equipped with a short-pulse laser source with a high energy density (GW / cm 2 magnitude), ensuring that the laser beam can quickly and precisely act on the surface of the workpiece 9 to generate a strong shock wave effect. The focusing and guiding system of the laser beam has high precision, ensuring that the laser energy is concentrated and released in a specific area on the surface of the workpiece 9.

[0066] The high-frequency power supply 11 is stable and reliable, capable of providing sufficient power to generate the required induction heating effect; the induction coil 13 is reasonably designed and can closely fit the shape of the workpiece 9 to ensure uniform and efficient heating.

[0067] The plasma generator can generate a high-temperature, high-speed and stable plasma beam to meet the requirements of precision machining. The nozzle 4 is precisely designed to ensure that the plasma beam is sprayed onto the surface of the workpiece 9 at an appropriate angle and speed.

[0068] The total control module 15 includes a chassis, a rectification system, an inversion system, a trigger control module, a protection system, a monitoring system, and a heat dissipation system, and the chassis is made of insulating materials.

[0069] Working principle: In the specific operation process, first, the workpiece 9 is preheated by the high-frequency induction heating module to make it reach a certain plastic state. Then, the plasma heating module is turned on to further reduce the plastic deformation resistance of the surface layer of the workpiece 9. Next, the laser generating device emits a high-intensity laser beam to perform shock strengthening on the workpiece 9. The three cooperate, run synchronously, complement each other, and act together on the workpiece 9 to be processed.

[0070] Embodiment 2

[0071] Reference Figure 2 , on the basis of Embodiment 1, this embodiment provides a method for synergistic strengthening of laser shock with high-frequency induction and plasma beam. The strengthening method includes the following steps:

[0072] S1: Fix the workpiece 9 to be processed on the fixed electrode 14 and coat the absorption layer 8 on the surface area to be strengthened of the workpiece 9;

[0073] S2: Start the high-frequency induction heating module and set the current parameters to preheat or locally heat the workpiece 9;

[0074] S3: Use the plasma gas generator 17 and the high-frequency power supply 11 to generate a plasma arc to preprocess the surface of the preheated or locally heated workpiece 9;

[0075] S4: Start the plasma heating module and heat the surface of the workpiece 9 through the transferred arc 18 to reduce its surface plastic deformation resistance;

[0076] S5: Adjust the current parameters of the high-frequency power supply 11 and the parameters of the laser generating device, and simultaneously perform the composite strengthening operation of high-frequency induction heating-induced plasticity and laser shock;

[0077] S6: After repeatedly performing the composite strengthening operation multiple times, shut down the laser generating device, and inspect and analyze the processed workpiece 9.

[0078] Specifically, in this embodiment, the current parameters of the high-frequency induction heating module in step S2 include: the current magnitude is 2000 - 4000A, the duty cycle is 50%, and the pulse frequency is 1500 - 3000Hz.

[0079] Specifically, in this embodiment, the parameters of the laser generating device in step S5 include: the intake angle is 90°, the spot diameter is 2 - 3mm, and the spot overlap rate is 50%.

[0080] Specifically, in this embodiment, the process parameters of the laser shock composite strengthening operation in step S5 include: the pulse frequency is 5 - 10Hz, the power density is 5GW / cm 2 , the wavelength is 1064nm, the pulse time is 10 - 30ns, and the spot diameter is 3 - 5mm.

[0081] It should be noted that, in this embodiment, the pretreatment operations in the above step S3 include: cleaning, degreasing, rust removal, etc., to ensure the strengthening effect.

[0082] It should be noted that, in this embodiment, the specific operations in the above steps S1 - S4 are as follows:

[0083] The staff needs to connect the high-frequency power supply 11 through the control module, and perform the clamping and fixing operation on the workpiece 9 to be processed and the fixed clamp 16 to ensure that both are firmly installed and accurately positioned; then, with the help of the industrial control computer 1, control the workpiece 9 to be processed and the plasma arc; then coat the absorption layer 8 on the surface of the workpiece 9 to be processed at the position where the impact strengthening is to be performed;

[0084] After the above operations are completed, move the total control module 15 to the processing area of the workpiece 9 to be processed, set the current parameters for the high-frequency power supply 11 to carry out the pretreatment work of the workpiece 9 to be processed. Through the coordinated action of the industrial control computer 1, the total control module 15, and the fast charge and discharge module, accurately regulate the magnitude of the plasma gas introduced into the plasma generator, thereby generating a plasma beam that meets the requirements. At the same time, assemble the coolant 5 at both ends of the tungsten electrode 12 to optimize the plasma beam characteristics; the industrial control computer 1 controls the laser generating device through the total control module 15 to generate a laser. After the laser beam passes through the light guiding component 6, it acts on the absorption layer 8 coated on the metal surface; after the absorption layer 8 absorbs the laser energy, it immediately generates a high-temperature and high-pressure plasma, thus forming a strong laser shock effect; then perform the subsequent steps S5 and S6.

[0085] Example 3

[0086] Based on Example 2, this example provides a computer-readable storage medium with a computer program stored thereon. When the computer program is executed by a processor, the steps of the method described in Example 2 are implemented.

[0087] In summary, through the multi-field coupling and collaborative strengthening of high-frequency induction heating, plasma beam heating, and laser shock, the present invention not only overcomes the limitations of single strengthening technologies but also significantly improves the comprehensive performance of materials, solving problems such as limited strengthening depth, inability to effectively inhibit crack propagation, low energy utilization efficiency, insignificant strengthening effect, short anti-fatigue life, and low product qualification rate existing in the above-mentioned comparative documents. At the same time, through plasma arc cladding treatment, the surface hardness and corrosion resistance of the material are further improved, providing a more reliable and efficient strengthening solution for fields such as aerospace, construction machinery, ocean engineering, and shipbuilding.

[0088] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program code.

[0089] The present application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one or more flows and / or blocks Figure 1 one or more blocks.

[0090] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that implement the functions specified in Figure 1 one or more flows and / or blocks Figure 1 one or more blocks.

[0091] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to produce a computer-implemented process, thereby the instructions executed on the computer or other programmable apparatus provide steps for realizing the functions specified in one process or multiple processes and / or one block or multiple blocks in the flow Figure 1 one process or multiple processes and / or blocks Figure 1 or steps for realizing the functions specified in multiple blocks.

[0092] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A laser shock, high-frequency induction, and plasma beam collaborative strengthening device, characterized in that, Including: A high-frequency induction heating module for pre-heating a workpiece (9) to be processed; A plasma heating module for further optimizing the pre-heated workpiece (9); A laser generating device for emitting a laser beam to perform shock strengthening treatment on the optimized workpiece (9); And a total control module (15) for controlling the coordinated operation of the high-frequency induction heating module, the plasma heating module, and the laser generating device; wherein, The total control module (15) includes an industrial control computer (1) and a rapid charge and discharge unit (2). The industrial control computer (1) is used for overall controlling the operation of the device, and the rapid charge and discharge unit (2) is used for providing power supply.

2. The laser shock, high-frequency induction, and plasma beam collaborative strengthening device according to claim 1, wherein The high-frequency induction heating module includes a high-frequency power supply (11), a power controller (3), and an induction coil (13); The high-frequency power supply (11) is electrically connected to the total control module (15); Both ends of the power controller (3) are electrically connected to the high-frequency power supply (11), the rapid charge and discharge unit (2), and the industrial control computer (1); The induction coil (13) surrounds the workpiece (9) to be processed, and is used for generating a high-frequency magnetic field to induce eddy currents inside the workpiece (9) to achieve rapid heating.

3. The laser shock and high-frequency induction and plasma beam collaborative strengthening device according to claim 1, characterized in that, The plasma heating module includes a plasma gas generator (17) and a nozzle (4); the plasma gas generator (17) is electrically connected to the industrial control computer (1) and is used for generating plasma gas; the nozzle (4) is used for spraying the plasma gas onto the surface of the workpiece (9).

4. The laser shock and high-frequency induction and plasma beam collaborative strengthening device according to claim 1, wherein The laser generating device includes a laser generator (7) and a light guiding component (6); the laser generator (7) is electrically connected to the industrial control computer (1); the light guiding component (6) is used for precisely focusing the laser beam onto the surface of the workpiece (9).

5. The laser shock and high-frequency induction and plasma beam collaborative strengthening device according to claim 2, wherein, Above and below the workpiece (9), a tungsten electrode (12) and a fixed electrode (14) are respectively provided. The tungsten electrode (12) is electrically connected to the high-frequency power supply (11) and is used for generating a plasma arc; the fixed electrode (14) is electrically connected to the high-frequency power supply (11).

6. A method for synergistic strengthening of laser shock with high-frequency induction and plasma beam, based on the laser shock with high-frequency induction and plasma beam synergistic strengthening device according to any one of claims 1-5, characterized in that, The strengthening method includes the following steps: S1: Fix the workpiece (9) to be processed on the fixed electrode (14), and coat an absorption layer (8) on the surface area to be strengthened of the workpiece (9); S2: Start the high-frequency induction heating module and set the current parameters to pre-heat or locally heat the workpiece (9); S3: Use the plasma gas generator (17) and the high-frequency power supply (11) to generate a plasma arc to perform pre-treatment on the surface of the pre-heated or locally heated workpiece (9); S4: Start the plasma heating module and heat the surface of the workpiece (9) through a transferred arc (18) to reduce the plastic deformation resistance of its surface layer; S5: Adjust the current parameters of the high-frequency power supply (11) and the parameters of the laser generating device, and simultaneously perform a composite strengthening operation of high-frequency induction heating-induced plasticity and laser shock; S6: After repeatedly performing the composite strengthening operation multiple times, turn off the laser generating device, and perform inspection and analysis on the processed workpiece (9).

7. The laser shock and high-frequency induction and plasma beam collaborative strengthening method according to claim 6, wherein The current parameters of the high-frequency induction heating module in step S2 include: the current magnitude is 2000 - 4000 A, the duty cycle is 50%, and the pulse frequency is 1500 - 3000 Hz.

8. The laser shock and high-frequency induction and plasma beam collaborative strengthening method according to claim 6, characterized in that The parameters of the laser generating device in step S5 include: the intake angle is 90°, the spot diameter is 2 - 3 mm, and the spot overlap rate is 50%.

9. The laser shock and high-frequency induction and plasma beam synergistic strengthening method according to claim 6, characterized in that The process parameters of the laser shock composite strengthening operation in step S5 include: the pulse frequency is 5 - 10 Hz, the power density is 5 GW / cm 2 , the wavelength is 1064 nm, the pulse time is 10 - 30 ns, and the spot diameter is 3 - 5 mm.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, the steps of the method according to any one of claims 6 - 9 are implemented.

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