High-energy beam surface modification cooling system utilizing the synergistic effect of a strong convective ultrasonic array

Abstract

This invention provides a high-energy beam surface modification cooling system utilizing the synergistic effect of a strong convection ultrasonic array. The system comprises a strong convection ultrasonic generator, a high-energy beam modification system, and a modification atmosphere protection system. The strong convection ultrasonic generator is fitted onto a platform via a lower trapezoidal notch and houses an array of flow field generating devices and ultrasonic generators. The high-energy beam modification system includes a six-axis robotic arm, a high-energy beam generator, a high-energy beam transmission device, a high-energy beam modification nozzle, and an online monitor for the molten pool state. The modification atmosphere protection system includes an atmosphere protection chamber, temperature and humidity sensors, an air quality detector, a dust removal and purification system, an oxygen content detector, and a sealing port. This invention, through the synergistic effect of the strong convection ultrasonic array assisting the high-energy beam surface modification cooling system, couples the coolant flow field convection and the liquid ultrasonic cavitation effect, enabling online, controllable, and uniform temperature adjustment during the high-energy beam modification of heat-sensitive materials.

Description

Technical Field

[0001] This invention belongs to the field of high-energy beam surface modification technology, specifically a high-energy beam surface modification cooling system that utilizes the synergistic effect of a strong convection ultrasonic array. Background Technology

[0002] With my country making breakthroughs in a series of major aerospace science and technology projects, such as second-generation navigation, high-resolution Earth observation, deep space exploration, and manned spaceflight, a series of new detectors and new launch platforms have been developed to meet increasingly complex and demanding space operation tasks. This has placed stringent and diverse demands on the oxidation resistance, wear resistance, and corrosion resistance of aerospace materials.

[0003] High-energy beam surface strengthening technology, as a relatively new surface strengthening technology, has broad development prospects in improving the surface properties of aerospace materials and ensuring the long-term, safe operation of key equipment such as aero-engine blades and gyroscope bases due to its advantages such as small heat-affected zone, non-contact heating, environmental friendliness, strong metallurgical bonding, and high process controllability. However, when treating thin-walled aerospace metal structures and low-melting-point alloys (aluminum alloys, magnesium alloys, etc.), high-energy beam surface modification technology is prone to problems such as matrix deformation, dilution, and burn-off caused by heat concentration in the substrate, which affects the efficiency and quality of material modification and greatly limits the development of high-energy beam surface modification technology in the aerospace field.

[0004] Currently, the main solutions to the problem of concentrated heat in the substrate during high-energy beam surface modification include modification path planning, external field-assisted regulation, and substrate temperature control. Among these, substrate temperature control methods include gas cooling, natural cooling, and water-cooled plate cooling. However, these three methods suffer from low cooling efficiency, poor uniformity, and the inability to adjust the cooling rate online. This makes it difficult to achieve long-term stability of the substrate's state during modification, resulting in inconsistent modified layer conditions and large defects, seriously affecting the service safety of critical components. Therefore, there is an urgent need to design a novel high-energy beam surface modification auxiliary energy control device with high cooling efficiency, strong uniformity, and the ability to monitor substrate temperature online. This will promote the development of high-energy beam surface modification technology, achieve high-quality, low-deformation molding of modified layers, and further advance the field of thermal control in aerospace material processing. Summary of the Invention

[0005] The purpose of this invention is to address the research challenge of the large energy matching difference between aerospace metal thin-walled structures and low-melting-point alloy materials and high-energy beam surface modification processes, and to provide a high-energy beam surface modification cooling system that utilizes the synergistic effect of a strong convection ultrasonic array.

[0006] This invention discloses a high-energy beam surface modification and cooling system utilizing the synergistic effect of a strong convection ultrasonic array. The system comprises a strong convection ultrasonic generation system, a high-energy beam modification system, and a modified atmosphere protection system. The strong convection ultrasonic generation system is fitted into a trapezoidal platform on a carrying platform via a trapezoidal notch located below. The modified atmosphere protection system includes an atmosphere protection chamber, a temperature and humidity sensor, an air quality detector, a dust removal and purification system, an oxygen content detector, and a sealing port. The sealing port on the atmosphere protection chamber is connected to an argon cylinder and a coolant tank via a flexible hose. The temperature and humidity sensor, air quality detector, dust removal and purification system, and oxygen content detector are connected to a control system via data transmission lines.

[0007] The strong convection ultrasonic generation system includes a copper worktable, a flow field generating device, an ultrasonic generating device, coolant inlets, coolant, and an ultrasonic vibration platform. Two flow field generating devices are installed around the four sides and bottom of the copper worktable frame. Four ultrasonic generating devices are installed around the four sides of the copper worktable frame. The coolant and ultrasonic vibration platform are placed inside the copper worktable. Two coolant inlets are installed around the four sides of the copper worktable and are connected to the coolant tank through hoses to adjust the coolant level inside the copper worktable.

[0008] The ultrasonic vibration platform includes a sample carrier platform, a vacuum adsorption device, an ultrasonic auxiliary device, a hydraulic lifting device, a chassis, a workpiece to be modified, and a workpiece temperature sensor. The workpiece to be modified is fixed on the sample carrier platform by the vacuum adsorption device, and the height of the sample carrier platform can be adjusted by the hydraulic lifting device.

[0009] The high-energy beam surface modification system includes a six-axis robotic arm, a high-energy beam generator, a high-energy beam transmission device, a high-energy beam modification gun, and an online monitor for the molten pool condition. The high-energy beam modification gun is connected to the high-energy beam generator through the high-energy beam transmission device. The six-axis robotic arm, the online monitor for the molten pool condition, and the high-energy beam generator are connected to the control system through a data transmission line. The high-energy beam modification gun and the online monitor for the molten pool condition are mounted on the six-axis robotic arm and positioned above the workpiece to be modified.

[0010] The vacuum adsorption devices on the sample carrier platform are arranged in a rectangular array.

[0011] Four ultrasonic generators are placed between two coolant pipes distributed around the copper worktable, and four ultrasonic auxiliary devices are placed below the four corners of the sample carrier platform.

[0012] Four workpiece temperature sensors are placed above the four corners of the workpiece to be modified, and the online monitor of the molten pool status is fixed on a six-axis robotic arm;

[0013] The loading frequencies of the ultrasonic generator and the ultrasonic auxiliary device are 20-40kHz and 20-80kHz, respectively.

[0014] This invention discloses a high-energy beam surface modification and cooling system utilizing the synergistic effect of a strong convection ultrasonic array. The system comprises a strong convection ultrasonic generation system, a high-energy beam modification system, and a modified atmosphere protection system. The strong convection ultrasonic generation system is fitted into a trapezoidal platform on a carrying platform via a trapezoidal notch located below. The modified atmosphere protection system includes an atmosphere protection chamber, a temperature and humidity sensor, an air quality detector, a dust removal and purification system, an oxygen content detector, and a sealing port. The sealing port on the atmosphere protection chamber is connected to an argon cylinder and a coolant tank via a flexible hose. The temperature and humidity sensor, air quality detector, dust removal and purification system, and oxygen content detector are connected to the control system via data transmission lines.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention relates to a high-energy beam surface modification cooling system for aerospace thin-walled metal structures and low-melting-point alloy materials, utilizing the synergistic effect of a strong convection ultrasonic array. The system primarily comprises a strong convection ultrasonic generator system, a high-energy beam modification system, and a modification atmosphere protection system. Innovatively, it addresses the auxiliary energy regulation of high-energy beam modification of thin-walled metal structures and low-melting-point alloy materials by coupling coolant flow field convection and liquid ultrasonic cavitation effects. This achieves controllable and uniform temperature regulation of the heat-sensitive substrate, improving cooling efficiency. Simultaneously, it utilizes a workpiece temperature sensor, an online molten pool state monitor, and a control system to intelligently control various parameters of the strong convection ultrasonic generator system. This enables dynamic matching of high-energy beam energy input and substrate energy dissipation during the modification process, creating an optimal cooling environment for the high-energy beam modification process and solving the problem of difficult high-energy beam modified layer formation on the surface of aerospace thin-walled metal structures and low-melting-point alloy materials. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the high-energy beam surface modification cooling system utilizing the synergistic effect of a strong convection ultrasonic array, as described in this invention.

[0018] Figure 2 This is a schematic diagram of a high-intensity convective ultrasound generation system.

[0019] Figure 3 This is a schematic diagram of the ultrasonic vibration platform structure.

[0020] In the diagram: 1-Atmosphere protection chamber, 2-Temperature and humidity sensor, 3-Air quality detector, 4-Dust removal and purification system, 5-Oxygen content detector, 6-Sealing port, 7-Six-axis robotic arm, 8-High-energy beam modification nozzle, 9-Online monitor of molten pool status, 10-Platform, 11-Ladder, 12-Argon cylinder, 13-High-energy beam generator, 14-Control system, 15-Data transmission line, 16-Hose, 17-High-energy beam transmission device, 30-Coolant tank, 31-Coolant 32-Cooling device, 33-Water pump, 34-Heating device, 40-Strong convection ultrasonic generation system, 41-Copper worktable, 42-Trapezoidal notch, 43-Flow field generating device, 44-Ultrasonic generating device, 45-Coolant inlet, 50-Ultrasonic vibration platform, 51-Sample carrying platform, 52-Vacuum adsorption device, 53-Ultrasonic auxiliary device, 54-Hydraulic lifting device, 55-Chassis, 56-Workpiece to be modified, 57-Workpiece temperature sensor, 58-Modified layer. Detailed Implementation

[0021] Specific Implementation Method 1: This implementation method utilizes a high-energy beam surface modification and cooling system based on the synergistic effect of a strong convection ultrasonic array. The system includes a strong convection ultrasonic generator system 40, a high-energy beam modification system, and a modified atmosphere protection system. The strong convection ultrasonic generator system 40 is fitted into a trapezoidal notch 42 located below it and a ladder platform 11 on the loading platform 10. The modified atmosphere protection system includes an atmosphere protection chamber 1, a temperature and humidity sensor 2, an air quality detector 3, a dust removal and purification system 4, an oxygen content detector 5, and a sealing port 6. The sealing port 6 on the atmosphere protection chamber 1 is connected to an argon cylinder 12 and a coolant tank 30 via a flexible hose 16. The temperature and humidity sensor 2, the air quality detector 3, the dust removal and purification system 4, and the oxygen content detector 5 are connected to the control system 14 via a data transmission line 15.

[0022] The strong convection ultrasonic generation system 40 includes a copper worktable 41, a flow field generating device 43, an ultrasonic generating device 44, a coolant inlet 45, a coolant 31, and an ultrasonic vibration platform 50. Two flow field generating devices 43 are respectively installed around the frame and bottom of the copper worktable 41. Four ultrasonic generating devices 44 are installed around the frame of the copper worktable 41. The coolant 31 and the ultrasonic vibration platform 50 are placed inside the copper worktable 41. Two coolant inlets 45 are provided around the copper worktable 41, which are connected to the coolant tank 30 through hoses 16 to adjust the water level of the coolant 31 inside the copper worktable 41.

[0023] The ultrasonic vibration platform 50 includes a sample carrying platform 51, a vacuum adsorption device 52, an ultrasonic auxiliary device 53, a hydraulic lifting device 54, a chassis 55, a workpiece to be modified 56, and a workpiece temperature sensor 57. The workpiece to be modified 56 is fixed on the sample carrying platform 51 by the vacuum adsorption device 52, and the height of the sample carrying platform 51 can be adjusted by the hydraulic lifting device 54.

[0024] The high-energy beam surface modification system includes a six-axis robotic arm 7, a high-energy beam generator 13, a high-energy beam transmission device 17, a high-energy beam modification gun 8, and an online molten pool status monitor 9. The high-energy beam modification gun 8 is connected to the high-energy beam generator 13 through the high-energy beam transmission device 17. The six-axis robotic arm 7, the online molten pool status monitor 9, and the high-energy beam generator 13 are connected to the control system 14 through a data transmission line 15. The high-energy beam modification gun 8 and the online molten pool status monitor 9 are mounted on the six-axis robotic arm 7 and positioned above the workpiece 56 to be modified.

[0025] This implementation scheme achieves real-time detection of the state of the workpiece 56 to be modified during the modification process through the synergistic effect of the online molten pool state monitor 9 and the workpiece temperature sensor 57. Relying on the data transmission line 15 and the connection with the control system 14, it completes the intelligent control of various parameters of the strong convection ultrasonic generator system 40. The invention is flexible in design and can efficiently and controllably adjust the temperature of the workpiece 56 to be modified during the high-energy beam modification process, solving the problem of difficult high-energy beam modification layer formation on the surface of aerospace metal thin-walled structures and low-melting-point alloy materials.

[0026] Specific Implementation Method Two: The difference between this implementation method and Specific Implementation Method One is that the vacuum adsorption devices 52 on the sample carrier platform 51 are arranged in a rectangular array.

[0027] Specific Implementation Method 3: This implementation method differs from Specific Implementation Method 1 or 2 in that the four ultrasonic generating devices 44 are placed between the two coolant pipe openings 45 distributed around the copper worktable 41, and the four ultrasonic auxiliary devices 53 are placed below the four corners of the sample carrying platform 51.

[0028] Specific Implementation Method Four: This implementation method differs from Specific Implementation Method One or Three in that four workpiece temperature sensors 57 are placed above the four corners of the workpiece 56 to be modified, and the online molten pool status monitor 9 is fixed on the six-axis robotic arm 7.

[0029] Specific Implementation Method Five: This implementation method differs from Specific Implementation Method One or Four in that the loading frequencies of the ultrasonic generator 44 and the ultrasonic auxiliary device 53 are 20-40kHz and 20-80kHz, respectively.

[0030] Example: This example utilizes a high-energy beam surface modification and cooling system based on the synergistic effect of a strong convection ultrasonic array. The system includes a strong convection ultrasonic generator 40, a high-energy beam modification system, and a modified atmosphere protection system. The strong convection ultrasonic generator 40 is fitted into a trapezoidal notch 42 located below it, which is connected to a ladder 11 on the loading platform 10. The modified atmosphere protection system includes an atmosphere protection chamber 1, a temperature and humidity sensor 2, an air quality detector 3, a dust removal and purification system 4, an oxygen content detector 5, and a sealing port 6. The sealing port 6 on the atmosphere protection chamber 1 is connected to an argon cylinder 12 and a coolant tank 30 via a flexible hose 16. The temperature and humidity sensor 2, the air quality detector 3, the dust removal and purification system 4, and the oxygen content detector 5 are connected to the control system 14 via a data transmission line 15.

[0031] The strong convection ultrasonic generation system 40 includes a copper worktable 41, a flow field generating device 43, an ultrasonic generating device 44, a coolant inlet 45, a coolant 31, and an ultrasonic vibration platform 50. Two flow field generating devices 43 are respectively installed around the frame and bottom of the copper worktable 41. Four ultrasonic generating devices 44 are installed around the frame of the copper worktable 41. The coolant 31 and the ultrasonic vibration platform 50 are placed inside the copper worktable 41. Two coolant inlets 45 are provided around the copper worktable 41, which are connected to the coolant tank 30 through hoses 16 to adjust the water level of the coolant 31 inside the copper worktable 41.

[0032] The ultrasonic vibration platform 50 includes a sample carrying platform 51, a vacuum adsorption device 52, an ultrasonic auxiliary device 53, a hydraulic lifting device 54, a chassis 55, a workpiece to be modified 56, and a workpiece temperature sensor 57. The workpiece to be modified 56 is fixed on the sample carrying platform 51 by the vacuum adsorption device 52, and the height of the sample carrying platform 51 can be adjusted by the hydraulic lifting device 54.

[0033] The high-energy beam surface modification system includes a six-axis robotic arm 7, a high-energy beam generator 13, a high-energy beam transmission device 17, a high-energy beam modification gun 8, and an online molten pool status monitor 9. The high-energy beam modification gun 8 is connected to the high-energy beam generator 13 through the high-energy beam transmission device 17. The six-axis robotic arm 7, the online molten pool status monitor 9, and the high-energy beam generator 13 are connected to the control system 14 through a data transmission line 15. The high-energy beam modification gun 8 and the online molten pool status monitor 9 are mounted on the six-axis robotic arm 7 and positioned above the workpiece 56 to be modified.

[0034] In this embodiment, the modified atmosphere protection system uses a built-in temperature and humidity sensor 2, an air quality detector 3, a dust removal and purification system 4, and an oxygen content detector 5 to control the temperature inside the atmosphere protection chamber 1 at 25℃±5℃, the air humidity at 40%-60%, and the oxygen content below 100ppm.

[0035] In this embodiment, the online molten pool condition monitor 9 and the high-energy beam modified gun head 8 are simultaneously fixed on the six-axis robotic arm 7 to achieve synchronous and co-positional movement. The online molten pool condition monitor 9 and the workpiece temperature sensor 57 are respectively connected to the control system 14 through different data transmission lines 15 to form an independent magnesium-lithium alloy substrate condition monitoring module.

[0036] In this embodiment, the magnesium-lithium alloy substrate has dimensions of 200×100×10mm, the height of the ultrasonic vibration platform 50 is 5-20cm, the coolant level in the strong convection ultrasonic generator system 40 is 0-15cm, the temperature of the magnesium-lithium alloy substrate during high-energy beam modification can be adjusted between -196-200℃, the loading frequencies of the ultrasonic generator 44 and the ultrasonic auxiliary device 53 are 20-40kHz and 20-80kHz respectively, and the high-energy beam modification power, scanning speed and gun head distance are 1500W, 25mm / s and 6cm respectively.

[0037] In summary, this invention relates to a high-energy beam surface modification and cooling system utilizing the synergistic effect of a strong convection ultrasonic array. Belonging to the field of high-energy beam surface modification technology, this invention is designed to address the challenges of energy control and poor thermal-material matching in high-energy beam surface modification of aerospace thin-walled metal structures and low-melting-point alloy materials. The invention provides a high-energy beam surface modification and cooling system utilizing the synergistic effect of a strong convection ultrasonic array, comprising a strong convection ultrasonic generator system, a high-energy beam modification system, and a modification atmosphere protection system. The strong convection ultrasonic generator system is fitted onto a platform via a lower trapezoidal notch and houses an array of flow field generating devices and ultrasonic generators. The high-energy beam modification system includes a six-axis robotic arm, a high-energy beam generator, a high-energy beam transmission device, a high-energy beam modification nozzle, and an online monitor for the molten pool state. The modification atmosphere protection system includes an atmosphere protection chamber, temperature and humidity sensors, an air quality detector, a dust removal and purification system, an oxygen content detector, and a sealing port. The present invention provides a high-energy beam surface modification cooling device that uses a strong convection ultrasonic array to coordinate with the convection of the coolant flow field and the ultrasonic cavitation effect of the liquid, which can realize online controllable and uniform temperature adjustment during the high-energy beam modification of heat-sensitive materials.

Claims

1. A high-energy beam surface modification cooling system utilizing the synergistic effect of a strongly-coupled ultrasonic array, characterized by, The system comprises a strong convection ultrasonic generating system (40), a high-energy beam modification system and a modified atmosphere protection system; the strong convection ultrasonic generating system (40) is embedded with a trapezoidal notch (42) arranged below and a ladder (11) arranged on a material loading platform (10); the modified atmosphere protection system comprises an atmosphere protection box (1), a temperature and humidity sensor (2), an air quality detector (3), a dust removal and purification system (4), an oxygen content detector (5) and a sealing port (6); the sealing port (6) is arranged on the atmosphere protection box (1) and connected with an argon cylinder (12) and a cooling liquid tank (30) through a hose (16); the temperature and humidity sensor (2), the air quality detector (3), the dust removal and purification system (4) and the oxygen content detector (5) are connected with a control system (14) through a data transmission line (15); The strong convection ultrasonic generating system (40) comprises a copper workbench (41), a flow field generating device (43), an ultrasonic generating device (44), a cooling liquid pipe (45), a cooling liquid (31) and an ultrasonic vibration platform (50); two flow field generating devices (43) are arranged on the four sides and the bottom of the copper workbench (41) frame, four ultrasonic generating devices (44) are installed on the four sides of the copper workbench (41) frame, the cooling liquid (31) and the ultrasonic vibration platform (50) are arranged in the copper workbench (41), two cooling liquid pipes (45) are arranged on the four sides of the copper workbench (41), and the cooling liquid pipes (45) are connected with the cooling liquid tank (30) through the hose (16) to adjust the water level height of the cooling liquid (31) in the copper workbench (41); The ultrasonic vibration platform (50) comprises a sample loading platform (51), a vacuum adsorption device (52), an ultrasonic auxiliary device (53), a hydraulic lifting device (54), a chassis (55), a workpiece to be modified (56) and a workpiece temperature sensor (57); the workpiece to be modified (56) is fixed on the sample loading platform (51) through the vacuum adsorption device (52), and the sample loading platform (51) can adjust the platform height through the hydraulic lifting device (54); The high-energy beam surface modification system comprises a six-axis mechanical arm (7), a high-energy beam generating device (13), a high-energy beam transmission device (17), a high-energy beam modification gun head (8) and a molten pool state online monitor (9); the high-energy beam modification gun head (8) is connected with the high-energy beam generating device (13) through the high-energy beam transmission device (17); the six-axis mechanical arm (7), the molten pool state online monitor (9) and the high-energy beam generating device (13) are connected with the control system (14) through the data transmission line (15); the high-energy beam modification gun head (8) and the molten pool state online monitor (9) are installed on the six-axis mechanical arm (7) and arranged above the workpiece to be modified (56).

2. The high energy beam surface modification cooling system utilizing the superposition effect of strongly coupled ultrasonic arrays of claim 1, wherein, The vacuum adsorption devices (52) on the sample loading platform (51) are arranged in a rectangular array.

3. The high energy beam surface modification cooling system utilizing the superposition effect of strongly coupled ultrasonic arrays of claim 1, wherein, The four ultrasonic generating devices (44) are arranged between the two cooling liquid pipes (45) distributed on the four sides of the copper workbench (41); and the four ultrasonic auxiliary devices (53) are arranged below the four corners of the sample loading platform (51).

4. The high energy beam surface modification cooling system utilizing the superposition effect of strongly coupled ultrasonic arrays of claim 1, wherein, Four workpiece temperature sensors (57) are placed above the four corners of the workpiece (56) to be modified, and the molten pool state online monitor (9) is fixed on the six-axis mechanical arm (7).

5. The high energy beam surface modification cooling system utilizing the superposition effect of strongly coupled ultrasonic arrays of claim 1, wherein, The loading frequencies of the ultrasonic generating device (44) and the ultrasonic auxiliary device (53) are 20-40 kHz and 20-80 kHz, respectively.

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