Laser shock, high-frequency induction and high-infrared heating synergistic strengthening device and method

Abstract

The invention discloses a laser shock, high-frequency induction and high-infrared heating synergistic strengthening device and method, and relates to the field of machining. The device comprises a high-frequency induction heating applying part, a laser generating device and a high-infrared heating part, on a working table, a workpiece is firstly treated through high-frequency induction heating, and then the workpiece is acted by the high-infrared heating part. And through the synergistic effect of high-frequency induction heating and high-infrared heating, the plasticity of the workpiece is effectively improved, and laser shock is combined. The laser generating device, the high-frequency induction heating part and the high-infrared heating part can operate synchronously, the problems of insufficient plastic deformation resistance and non-uniform stress distribution during single high-infrared heating are solved, and the work hardening phenomenon caused by insufficient energy is remarkably reduced. And through synergistic superposition of high-frequency induction and high-infrared heating and combination of laser shock, the action depth of laser shock is greatly improved, and the laser shock treatment device is particularly suitable for strengthening treatment of thick workpieces and high-strength materials.

Description

Technical Field

[0001] The present invention relates to the field of material surface strengthening treatment, and particularly relates to a laser shock, high-frequency induction heating, and high-infrared heating collaborative strengthening method and device for large workpieces. Background Art

[0002] In current fields such as aerospace, engineering machinery, ocean engineering, and shipbuilding, the requirements for the reliability of service mechanical components are continuously increasing. It is required that mechanical components possess comprehensive properties such as high surface hardness, high wear resistance, high fatigue resistance, high surface finish, and good corrosion resistance.

[0003] The collaborative processing of high-frequency induction and high-infrared heating is a new processing technology. Single strengthening technologies often have limitations. For example, laser shock strengthening mostly acts on the material surface, and its ability to change the deep internal microstructure of the material is limited; during current heating, there is heat loss in the heat transfer process, the thermal efficiency is relatively low, usually around 40% - 60%, the maintenance cost is relatively high, and there are even potential safety hazards, and the heating speed is slow; when high-frequency induction heating is used alone, the strengthening effect may not be ideal or requires a relatively high energy input. By combining laser shock with high-frequency induction and high-infrared heating for collaborative strengthening, the advantages of each technology can be exerted. Through reasonable parameter settings and process control, the material can be effectively strengthened on both the surface and inside. Such a collaborative strengthening device can change the organizational structure of the material in multiple dimensions, thereby significantly improving the comprehensive properties of the material.

[0004] The plastic deformation generated on the material surface by laser shock will introduce residual compressive stress. The residual compressive stress can offset the tensile stress borne by the part during service, thereby effectively delaying the initiation and propagation of fatigue cracks. Under the action of alternating loads, the tensile stress on the material surface is the key factor causing fatigue failure. The shock wave generated by laser shock will cause severe plastic deformation on the material surface, and this deformation will refine the grains on the material surface.

[0005] After retrieval, the published patent No. CN104195322A discloses a method for surface strengthening treatment of metal materials by coupling electroplasticity and ultrasonic rolling. A pulsed current is applied to the processing area of the metal workpiece. With the electroplastic effect, skin effect, and thermal effect of the pulsed current, the plastic deformation resistance of the surface layer of the processing area is appropriately reduced. At the same time, the metal workpiece is rotated by a support device, and the surface layer of the processing area is ultrasonically impacted and rolled by an ultrasonic rolling device moving along the axial direction of the metal workpiece, causing severe plastic deformation on the surface layer of the processing area, resulting in an increase in dislocation density and grain refinement, and forming a strengthened layer. However, the stamping pressure of this method cannot reach a very high magnitude, and it cannot inhibit the generation of cracks and reduce the propagation rate of the already generated cracks.

[0006] Patent for invention CN111961836A discloses a strengthening device and method for electromagnetic - assisted laser shock compounding, which relates to the fields of laser and magnetic field processing. It includes a laser generating device and a device for high - infrared heating. The workpiece to be processed is placed on a workbench, and the relevant devices act on the workpiece to be processed, and the workpiece to be processed is in a suitable action area. The laser generating device and the high - infrared heating device work simultaneously to perform compound processing on the workpiece to be processed. This method applies specific actions to the workpiece to be processed, utilizes the effect of high - infrared heating to reduce the plastic deformation resistance of the surface layer of the metal workpiece, alleviate the work - hardening of the workpiece surface layer during the laser shock process, and thus cooperate with the laser shock to increase the influence depth of the laser shock. In particular, it makes the depth of the residual compressive stress greater, and the distribution of the compressive stress more in line with the requirements of three - dimensional strengthening of components such as small - hole structures, and is suitable for strengthening thicker workpieces and materials with higher strength.

[0007] Patent for invention CN106148672A proposes an externally applied variable magnetic - field - assisted laser shock strengthening method. This method mainly obtains different magnetic - field intensities by changing the current magnitude, and under the assistance of the corresponding magnetic - field intensities, uses a laser to perform shock strengthening treatment on a specimen. This patent does not clearly state whether the externally applied variable magnetic field acts on the plasma or the workpiece material. However, no matter which one it acts on, there will be no obvious effect or it will be ineffective. Because the externally applied magnetic field is too small, the resulting gain effect is small, and since the applied magnetic field is in the millitesla level, it has little influence on the deformation and mechanical properties of the material.

[0008] Patent for invention CN113151665B proposes an electro - plastic and laser - shock compound strengthening method and device for large workpieces, including a current - applying component, a laser component, and a water - spraying component. The current - applying component is used to provide current to make the workpiece to be processed electro - plastic. The laser component is used to provide laser energy to process the workpiece to be processed. The water - spraying component forms a flat water curtain on the workpiece to be processed as a constraint layer for laser shock treatment. Combining electro - plasticity and laser shock to strengthen the material can solve a series of problems such as work - hardening, uneven and non - deep stress distribution, cracks, and dislocations compared with single laser shock. At the same time, for large workpieces, it is proposed to use a current collector to fully conduct the current to the processing area, reduce the large loss of current in the large workpiece, and form a high - density current in the area to be strengthened. This method can make up for the problem of small current energy and significantly improve the processing quality and processing efficiency, but there are still problems such as short anti - fatigue life and low product qualification rate.

[0009] The invention patent CN110172546A proposes a method for preparing a functionally gradient strengthening layer on the rail surface based on a laser-induction heat source. This invention combines a high-energy laser beam and an induction heat source. On the one hand, it increases the depth of laser action. On the other hand, it innovatively improves the interface structure between the quenched layer and the substrate, overcomes the disadvantages of the traditional laser quenched layer with a steep interface transition and high brittleness, increases the thickness of the semi-martensite transition zone, realizes a gradient transition of interface hardness, and at the same time increases the toughness of the quenched layer while increasing the depth and processing efficiency of the quenched layer, achieving an efficient strengthening treatment of the rail surface. The depth of induction heating can reach 3-10 mm, and the heating temperature can be adjusted between 100-500 °C, but it is still difficult to meet the requirement of the large power needed for laser action for large parts. Summary of the Invention

[0010] The purpose of the present invention is to solve the problems in the prior art, and a laser shock, high-frequency induction, and high-infrared heating collaborative strengthening device and method are proposed.

[0011] A laser shock, high-frequency induction, and high-infrared heating collaborative strengthening device includes a laser component, a high-infrared heating component, a high-frequency induction component, a control system, a cooling system, and a fixed support component;

[0012] The laser component includes a laser, and the laser irradiates the workpiece to be processed through a laser beam, and the workpiece is placed between the upper die and the lower die;

[0013] The high-infrared heating component includes a high-frequency infrared emitter, the high-frequency infrared emitter is placed above the workpiece, and the infrared rays generated by the high-frequency infrared emitter pass through the high-temperature resistant glass to preheat the workpiece;

[0014] The high-frequency induction component includes a high-frequency induction coil, a fast charge and discharge module one, and a fast charge and discharge module two. The high-frequency induction coil is arranged around the workpiece, and a magnetic field is generated by the pulsed current provided by the fast charge and discharge module one and the fast charge and discharge module two;

[0015] The control system includes an industrial computer and a control module connected thereto. The high-frequency induction coil is placed below the workpiece and acts on the workpiece through the industrial computer;

[0016] The cooling system includes cooling water holes and is used to reduce the temperature. The cooling water holes spray water onto the workpiece to prevent overheating and damage to the equipment.

[0017] In the above multi-field strengthening device combining laser shock with high-frequency induction and high-infrared heating, the fixed support component includes a guide sleeve, a guide post, a workbench, an absorption layer, an anti-deformation core rod for preventing workpiece deformation, and an asbestos heat-insulating layer for providing heat insulation. The absorption layer plays a constraining role on the workpiece and enhances the absorption efficiency of laser energy, restricting the thermally affected area. An insulating housing is disposed in a mating manner at the top of the upper die.

[0018] A method of using the above device is characterized in that laser shock is applied without stopping power supply, and composite strengthening is used to process mechanical parts simultaneously from the inside and outside of the material. The specific steps include:

[0019] S1: Workpiece preparation: Fix the workpiece (10) on the fixture to ensure its stability, and connect it to the high-frequency induction component and the high-infrared heating component;

[0020] S2: Laser shock setting: Determine the parameters of the laser, including power, frequency, and pulse width, and turn on the laser component for shock;

[0021] S3: High-frequency induction heating: After laser treatment, start the high-frequency induction component and adjust the output frequency to match the material characteristics of the workpiece;

[0022] S4: High-infrared heating treatment: At the same time, turn on the high-infrared heating component to make the high-infrared generator produce a strong heating effect and improve the plasticity of the material;

[0023] S5. Processing and forming: Through the synchronous operation of the laser component, the high-frequency induction component, and the high-infrared heating component, effective deformation inside the material is promoted under instantaneous high pressure and temperature.

[0024] S6. Cooling and detection: After processing, the workpiece (10) is quickly cooled through the cooling system to ensure the strengthening effect and avoid damage caused by stress concentration.

[0025] In the above method, in step S2, the current parameters are: current magnitude 2000 - 4000 A, duty cycle 50%, and pulse frequency 50 - 1500 Hz.

[0026] In the above method, the current parameters in step S3 are: the heating time is set between 10 - 30 seconds according to the workpiece, shape, size, etc. to ensure uniform heating and avoid overheating, and the heat preservation time is 5 - 20 seconds to make the internal temperature of the workpiece balanced.

[0027] In the above method, in step S4, in the high-infrared heating component, the equipment power is 1000 W, the heating time is 30 - 60 seconds, it is repeated every 3 - 6 s, and a total of 2 - 3 times are repeated.

[0028] In the above method, in step S6, deionized water is sprayed and insulation treatment is carried out, while ensuring its independent operation to prevent the equipment from being damaged by water conduction in case of equipment interference; the laser parameters are: the intake angle is 90°, the spot diameter is 3 mm, and the spot overlap rate is 50%.

[0029] Compared with the existing technologies, the advantages of the present invention are as follows: the present invention effectively eliminates a series of adverse conditions caused by single laser shock peening on the material surface or magnetic composite plastic strengthening and electro-composite plastic strengthening, such as work hardening, uneven stress field, crack generation, etc., optimizes the stress state in all directions, significantly improves the fatigue life of the material, and provides strong support and innovative ideas for the development of metal material surface strengthening technology. Compared with the previous anti-fatigue strengthening methods, the present invention improves the controllability of the area and the working efficiency, ensures the safety of the strengthening work. At the same time, the advantages include:

[0030] 1. The strengthening effect is significantly improved: The collaborative processing can comprehensively utilize the "inside-out" deep heating ability of high-frequency induction and the "outside-in" rapid surface temperature rise characteristic of high-infrared heating, combined with laser shock peening, to achieve a more comprehensive and in-depth strengthening treatment of the material. This can not only effectively improve the surface hardness of the material, but also significantly improve its internal tissue structure and enhance the overall mechanical properties.

[0031] 2. The energy utilization is more efficient: The "inside-out" deep heating of high-frequency induction, the "outside-in" rapid surface temperature rise of high-infrared heating, and the "point heating" shock strengthening of the laser. By precisely controlling the heating parameters and the energy transfer mode, the energy distribution is made more uniform, significantly improving the utilization rate of the energy required for strengthening processing and reducing unnecessary energy losses. When using a single high-frequency induction or high-infrared heating to process complex-shaped or large-sized workpieces, there are problems of uneven energy distribution or large energy losses.

[0032] 3. The residual stress distribution is more uniform: Under the synergistic action of high-frequency induction and high-infrared heating, the thermal stress of the material interacts with the mechanical stress generated by laser shock, which helps to improve the distribution state of the residual stress, reduce the stress concentration phenomenon, and improve the anti-fatigue performance of the material.

[0033] 4. The applicable range is wider: The collaborative processing technology can flexibly handle different types of workpieces and materials. Especially for materials or complex structural parts that are difficult to be effectively strengthened by a single heating method, the collaborative processing adopted in the present invention can provide a more comprehensive solution to achieve a more ideal strengthening effect.

[0034] 5. Higher production efficiency: High-frequency induction heating can rapidly heat up "from the inside out", while high-infrared heating can achieve rapid and uniform heating "from the outside in". Combined with laser spot heating, the synergistic effect of the three can significantly shorten the heating time, improve the overall production efficiency, and maintain high-quality processing results.

[0035] 6. Environmental protection and energy conservation: A large amount of traditional heating media is not required during the collaborative processing, reducing energy consumption and environmental pollution. At the same time, due to the improvement of heating efficiency, energy consumption and carbon emissions are further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 FIG. is a schematic structural diagram of a combination of laser shock, high-frequency induction, and high-infrared heating proposed by the present invention.

[0037] Figure 2 FIG. is a schematic side view structural diagram of a combination of laser shock, high-frequency induction, and high-infrared heating proposed by the present invention.

[0038] In the figure: 1 laser, 2 laser beam, 3 high-temperature resistant glass, 4 insulating housing, 5 high-frequency infrared emitter, 7 high-frequency induction coil, 8 infrared ray, 9 fast charge and discharge module one, 10 workpiece to be processed, 11 fast charge and discharge module two, 12 industrial control computer, 13 cooling water hole, 14 upper die, 15 lower die, 16 guide bushing, 17 guide pillar, 18 workbench, 19 anti-deformation core rod, 20 asbestos heat insulation layer, 21 control module, 22 beam tube, 23 absorption layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Referring to Figure 1-2 , a laser shock, high-frequency induction, and high-infrared heating collaborative strengthening device, the present invention mainly includes a laser component, a control system, a high-infrared heating component for high-infrared heating, a high-frequency induction component, a cooling system, and a fixed support component as components;

[0040] Among them, the laser component includes a laser 1, and the laser 1 irradiates the workpiece 10 to be processed through the laser beam 2, and the workpiece 10 is placed between the upper die 14 and the lower die 15;

[0041] The high-infrared heating component includes a high-frequency infrared emitter 5, the high-frequency infrared emitter 5 is placed above the workpiece 10, and the infrared ray 8 generated by the high-frequency infrared emitter 5 preheats the workpiece 10 through the high-temperature resistant glass 3;

[0042] The high-frequency induction component includes a high-frequency induction coil 7, a fast charge and discharge module one 9, and a fast charge and discharge module two 11. The high-frequency induction coil 7 is arranged around the workpiece 10 and generates a magnetic field through the pulse current provided by the fast charge and discharge module one 9 and the fast charge and discharge module two 11;

[0043] The control system includes an industrial control computer 12 and a control module 21 connected thereto. The high-frequency induction coil 7 is placed below the workpiece 10 and acts on the workpiece 10 through the industrial control computer 12.

[0044] The cooling system includes a cooling water hole 13 and is used to reduce the temperature. The cooling water hole 13 sprays water onto the workpiece 10 to prevent overheating and damage to the equipment.

[0045] For large workpieces, the high-frequency induction heating processing area is utilized, and the effect of high-infrared heating is superimposed to form energy concentration in the processing area, effectively controlling and reducing the plastic deformation resistance on the surface layer of the metal workpiece, significantly reducing the work hardening phenomenon that occurs on the surface layer of the workpiece during the laser shock process, greatly increasing the depth of the residual compressive stress, and constructing a compressive stress distribution that meets the three-dimensional strengthening requirements of components such as small hole structures. The above technical solutions show good applicability in the strengthening operations of thicker workpieces and high-strength materials. By achieving deep heating of induction heating, realizing "volume heating from the inside out", high-infrared heating, realizing "surface heating from the outside in", and adding the "point heating" of the laser action, the laser power requirement can be effectively reduced for large workpieces, the processing efficiency can be improved, and the stress and deformation after the strengthening treatment can be greatly reduced. Compared with the single use of induction heating or infrared heating, the "from the inside out", "from the outside in", and "point heating" of the present invention form a complementary synergistic effect. Its advantage lies in being able to more comprehensively optimize the stress state and significantly improve the fatigue life of the material. Induction heating can quickly heat the inside of the workpiece, while infrared heating can act more effectively on the surface of the workpiece. The synergistic effect of the two can achieve simultaneous strengthening from the inside to the outside of the material, avoiding problems such as stress non-uniformity and work hardening that may be caused by a single heating method.

[0046] The technical difficulty of the collaborative processing lies in precisely controlling the action time and intensity of various heating methods to achieve the best synergistic effect. To solve these technical difficulties, the present invention takes the following specific technical measures:

[0047] Control system: The control system not only includes traditional electrical control components, but also precisely controls the fast charge and discharge module and the high-infrared heating component through the industrial control computer and the control module to ensure that the action time and intensity of various heating methods can be flexibly adjusted according to the workpiece material and size.

[0048] Energy concentration and synergistic effect: Through the superimposed effect of high-frequency induction heating and high-infrared heating, energy concentration in the processing area is formed. This concentrated energy can more effectively reduce the plastic deformation resistance on the surface layer of the metal workpiece and provide more favorable conditions for the laser shock.

[0049] Insulation and protection design: The control system is equipped with an insulating housing 4, and the guide post 17 is made of non-conductive material to ensure safety during operation. At the same time, a hard wooden board is set between the lower surface of the workpiece 10 and related components to further protect the workpiece from unnecessary damage.

[0050] Precise guidance of laser shock: The laser beam 2 emitted by the laser generating device can accurately irradiate the workpiece 10 to be processed through the holes opened on the insulating housing 4, ensuring that the effect of laser shock can accurately act on the target area.

[0051] Design of anti-deformation mandrel: When the workpiece to be processed is a small-hole specimen, an anti-deformation mandrel can be inserted into the small hole to further prevent the workpiece from deforming during processing.

[0052] Multi-field strengthening strategy: A composite multi-field strengthening strategy is adopted, that is, under the simultaneous action of high-frequency induction, high-infrared heating and laser shock, the treatment is carried out simultaneously from the inside and outside of the material to achieve the comprehensive strengthening of metal materials.

[0053] The present invention discloses a method of using the above equipment, characterized in that laser shock is applied without stopping power supply, and composite strengthening is used to process mechanical parts simultaneously from the inside and outside of the material. The specific steps include:

[0054] S1: Workpiece preparation: Fix the workpiece 10 on the fixture to ensure its stability, and connect it to the high-frequency induction component and the high-infrared heating component;

[0055] S2: Laser shock setting: Determine the parameters of the laser, including power, frequency and pulse width, and turn on the laser component for shock;

[0056] S3: High-frequency induction heating: After laser treatment, start the high-frequency induction component and adjust the output frequency to match the material properties of the workpiece 10;

[0057] S4: High-infrared heating treatment: At the same time, turn on the high-infrared heating component to make the high-frequency infrared generator 5 produce a strong heating effect and improve the plasticity of the material;

[0058] S5. Processing and forming: Through the synchronous operation of the laser component, the high-frequency induction component and the high-infrared heating component, the effective deformation inside the material is promoted under instantaneous high pressure and temperature.

[0059] S6. Cooling and detection: After processing, let the workpiece (10) cool down quickly through the cooling system to ensure the strengthening effect and avoid damage caused by stress concentration.

[0060] Among them, the laser current parameters are set as follows: the current magnitude is 2000 - 4000 A, the duty cycle is 50%, and the pulse frequency is 50 - 1500 Hz; the current parameters in the high-frequency induction heating component are: the heating time should be set between 10 - 30 seconds according to the workpiece, shape, size, etc. to ensure uniform heating and avoid overheating, the heat preservation time is 5 - 20 seconds to balance the internal temperature of the workpiece and improve the overall heating quality. In the high-infrared heating component, the power is set at 1000 W, the heating time is 30 - 60 seconds, and it is repeated every 3 - 6 s, with a total of 2 - 3 repetitions; deionized water spraying is adopted, and insulation treatment is carried out, while ensuring its independent operation to prevent the equipment from being damaged by water conduction in case of equipment interference; the laser intake angle is 90°, the spot diameter is 3 mm, the spot overlap rate is 50%, and the laser energy magnitude is selected according to the specific material characteristics.

[0061] The invention effectively eliminates a series of adverse conditions caused by single laser shock strengthening of the material surface or magnetic composite plastic strengthening and electric composite plastic strengthening, such as work hardening, uneven stress field, and crack generation, etc. It comprehensively optimizes the stress state, significantly improves the fatigue life of the material, and provides strong support and innovative ideas for the development of metal material surface strengthening technology. Compared with the previous anti-fatigue strengthening methods, the invention improves the controllability of the area and the working efficiency, and ensures the safety of the strengthening work.

[0062] As is known by common technical knowledge, the present invention can be implemented by other embodiments that do not depart from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and are not the only ones. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. A device for synergistically strengthening laser shock with high-frequency induction and high-infrared heating, characterized in that, It includes a laser component, a high-infrared heating component, a high-frequency induction component, a control system, a cooling system, and a fixed support component; The laser component includes a laser (1), and the laser (1) irradiates the workpiece (10) to be processed through a laser beam (2), and the workpiece (10) is placed between an upper die (14) and a lower die (15); The high-infrared heating component includes a high-frequency infrared emitter (5), the high-frequency infrared emitter (5) is placed above the workpiece (10), and the infrared rays (8) generated by the high-frequency infrared emitter (5) pass through the high-temperature resistant glass (3) to preheat the workpiece (10); The high-frequency induction component includes a high-frequency induction coil (7), a fast charge and discharge module one (9), and a fast charge and discharge module two (11). The high-frequency induction coil (7) is arranged around the workpiece (10), and a magnetic field is generated by the pulsed current provided by the fast charge and discharge module one (9) and the fast charge and discharge module two (11); The control system includes an industrial personal computer (12) and a control module (21) connected thereto. The high-frequency induction coil (7) is placed below the workpiece (10) and acts on the workpiece (10) through the industrial personal computer (12); The cooling system includes a cooling water hole (13) and is used to reduce the temperature. The cooling water hole (13) sprays water onto the workpiece (10) to prevent overheating and damage to the equipment.

2. The synergistic strengthening device for laser shock, high-frequency induction, and high-infrared heating according to claim 1, wherein The fixed support component includes a guide bushing (16), a guide pillar (17), a workbench (18), an absorption layer (23), an anti-deformation core rod (19) for preventing the workpiece 10 from deforming, and an asbestos heat insulation layer (20) for providing heat insulation effect. The absorption layer (23) plays a restraining role on the workpiece and enhances the absorption efficiency of laser energy, restricting the heat-affected area. An insulating shell (14) is arranged at the top of the upper die (14) in a matching manner.

3. A method using the device according to any one of claims 1-2, characterized in that, Apply laser shock without stopping power supply, use composite strengthening, and process mechanical parts simultaneously from the inside and outside of the material. The specific steps include: S1: Workpiece preparation: Fix the workpiece (10) on a fixture to ensure its stability, and connect it to the high-frequency induction component and the high-infrared heating component; S2: Laser shock setting: Determine the parameters of the laser, including power, frequency, and pulse width, and turn on the laser component to perform shock; S3: High-frequency induction heating: After laser treatment, start the high-frequency induction component and adjust the output frequency to match the material characteristics of the workpiece; S4: High-infrared heating treatment: At the same time, turn on the high-infrared heating component to let the high-infrared generator produce a strong heating effect and improve the plasticity of the material; S5. Treatment and forming: Through the synchronous operation of the laser component, the high-frequency induction component, and the high-infrared heating component, promote the effective deformation inside the material under instantaneous high pressure and temperature. S6. Cooling and detection: After processing, let the workpiece (10) cool down rapidly through the cooling system to ensure the strengthening effect and avoid damage caused by stress concentration.

4. The method according to claim 3, wherein In step S2, the current parameters are: current magnitude 2000 - 4000A, duty cycle 50%, pulse frequency 50 - 1500Hz.

5. The method according to claim 3, wherein The current parameters in step S3 are as follows: the heating time should be set between 10 - 30 seconds according to the workpiece, shape, size, etc., to ensure uniform heating and avoid overheating. The heat preservation time is 5 - 20 seconds to balance the internal temperature of the workpiece.

6. A laser shock, high-frequency induction, and high-infrared heating collaborative strengthening device and processing method according to claim 3, characterized in that In step S4, in the high-infrared heating component, the equipment power is 1000W, the heating time is 30 - 60 seconds, and it repeats every 3 - 6 seconds, repeating 2 - 3 times in total.

7. The method according to claim 3, characterized in that, In step S6, deionized water is sprayed and insulation treatment is carried out, while ensuring its independent operation to prevent water flow from conducting electricity and damaging the equipment in case of equipment interference; the laser parameters are: the intake angle is 90°, the spot diameter is 3mm, and the spot overlap rate is 50%.

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