A method for preparing a high-temperature resistant abrasive brush and the abrasive brush itself.

Abstract

This invention provides a method for preparing a high-temperature resistant grinding brush and the grinding brush itself. The grinding brush, prepared by the method, comprises a heat-resistant metal brush plate and multiple bristle bundles fixed to the heat-resistant metal brush plate. Each bristle bundle consists of multiple high-temperature resistant composite bristles bundled together. One end of each bristle bundle has an anchoring head formed by high-frequency induction melting and spheroidization. The high-temperature resistant composite bristles include a high-temperature resistant metal matrix and inorganic wear-resistant particles dispersed therein. This invention, through the above structure and method, combined with a high-frequency induction heating device employing a multi-coil matrix and three-dimensional motion, enables rapid, uniform, and controllable localized heating and melting of the bristle bundle ends. This significantly improves the automation level and processing efficiency of production, resulting in a grinding brush with enhanced temperature resistance and service life. Furthermore, after trimming, the performance degradation of the bristle bundles at high temperatures is uniform, ensuring stable surface treatment quality of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of abrasive brush technology, and more particularly to a method for preparing a high-temperature resistant abrasive brush and the abrasive brush itself. Background Technology

[0002] In industries such as aerospace, metallurgy, and mold manufacturing, it is often necessary to perform online or offline grinding, polishing, or oxide scale removal on workpieces that are at high temperatures or have high-hardness surfaces. Traditional grinding brushes mainly use nylon, animal bristles, or ordinary steel wire as bristle materials, which have obvious drawbacks: 1. Poor temperature resistance: Nylon or organic brush bristles will soften, melt, or even burn in environments exceeding 200°C, losing their grinding ability; ordinary steel wire is prone to oxidation and softening at high temperatures, leading to a sharp increase in wear.

[0003] 2. Short lifespan: Under high temperature and high load grinding conditions, traditional brush bristles wear out quickly and need to be replaced frequently, which affects production efficiency and increases costs.

[0004] 3. Poor grinding consistency: The performance of the bristles degrades unevenly at high temperatures, resulting in unstable surface treatment quality of the workpiece.

[0005] Therefore, there is an urgent need to develop a grinding brush that can work stably for a long time in high-temperature environments above 500°C, and also has good grinding efficiency and consistency. Summary of the Invention

[0006] This invention discloses a method for preparing a high-temperature resistant grinding brush and the grinding brush itself, which mainly solves the problems of poor temperature resistance and short lifespan of existing grinding brushes.

[0007] To achieve the aforementioned objective, the technical solution of the present invention is implemented as follows: This invention provides a method for preparing a high-temperature resistant grinding brush, comprising the following steps; S1. Prepare high-temperature resistant composite brush bristles, wherein the high-temperature resistant composite brush bristles are composed of a high-temperature resistant metal matrix and inorganic wear-resistant particles uniformly distributed therein, wherein the high-temperature resistant metal matrix is ​​a nickel-based alloy, a cobalt-based alloy, or high-temperature stainless steel. The inorganic wear-resistant particles are at least one of silicon carbide, boron carbide, alumina, or diamond micro powder; the inorganic wear-resistant particles account for 10%-30% of the weight and have a particle size of 10μm-150μm. S2. The high-temperature resistant composite brush filaments are bundled into a brush filament bundle, and the implanted end of the brush filament bundle is reinforced to form an anchor head. The end strengthening treatment involves using a high-frequency induction heating device to melt and spheroidize the ends of multiple high-temperature resistant composite brush filaments into a single anchor head. S3. Prepare a heat-resistant metal brush plate with cooling channels, and process multiple wire planting holes communicating with the cooling channels in the heat-resistant metal brush plate. S4. Insert the anchoring head of the brush filament bundle into the filament planting hole of the heat-resistant metal brush plate, and fix it to the heat-resistant metal brush plate through a high-temperature metallurgical bonding process. The high-temperature metallurgical bonding process is high-temperature brazing or diffusion welding in a protective atmosphere or vacuum environment. S5. Trim and shape the free end of the bristle bundle to obtain a high-temperature resistant abrasive brush.

[0008] In one embodiment, in step S1, the composite brush filament is prepared by powder metallurgy drawing or melt-coating drawing.

[0009] In one embodiment, the high-frequency induction heating device includes a main body, on which a Y-axis moving mechanism is provided, an X-axis moving mechanism is provided on the Y-axis moving mechanism, and a Z-axis moving mechanism is provided on the X-axis moving mechanism. An induction heating head module is provided at the output end of the Z-axis moving mechanism. A clamping mechanism for clamping a bundle of brush filaments is provided on the main body. A cooling system is provided on the induction heating head module. A high-frequency induction power supply and a control system for controlling the Y-axis moving mechanism, the X-axis moving mechanism, the Z-axis moving mechanism, the induction heating head module, the clamping mechanism, and the cooling system are provided in the main body. The control system is electrically connected to the high-frequency induction power supply. The induction heating head module includes a bracket installed at the output end of the Z-axis moving mechanism. The bracket is equipped with a replaceable induction coil matrix, which is composed of multiple small induction coil units that are driven independently or in groups. The cooling system includes cooling nozzles disposed on the induction heating head module, the cooling nozzles being used to spray inert gas or compressed air toward the brush filament bundle.

[0010] In one embodiment, the small induction coil units in the induction coil matrix are tightly wound solenoids made of copper tubes, allowing the inner diameter of the small induction coil units to be of various sizes.

[0011] In one embodiment, the cooling nozzles of the integrated cooling system are arranged in a ring around the periphery of the bracket, and the bracket is provided with nozzle fixing ears at positions corresponding to the cooling nozzles, and the cooling nozzles are fixed to the nozzle fixing ears.

[0012] In one embodiment, the integrated cooling system further includes a central pipe, to which multiple cooling nozzles are connected, and an external air pump is connected to the central pipe.

[0013] In one embodiment, the clamping mechanism includes a first support base and a second support base spaced apart. The top of the first support base and the second support base are respectively provided with a first placement groove and a second placement groove. A clamping assembly is provided on the side of the first support base facing the second support base. The clamping assembly includes a support frame fixed to the first support base. The support frame is provided with a clamping area. The support frame is provided with a clamping head driven by a cylinder. The clamping head is located in the clamping area and is provided with a clamping groove.

[0014] The advantages or beneficial effects of the above technical solution include at least the following: by using the above method in conjunction with a high-frequency induction heating device, which employs a multi-coil matrix and three-dimensional motion, the brush filament bundle end can be rapidly, uniformly, and controllably heated and melted locally, which greatly improves the automation level and processing efficiency of production, and enables the manufactured grinding brush to improve its temperature resistance and service life. After trimming, the performance of the brush filament bundle at high temperature is uniformly degraded, ensuring stable surface treatment quality of the workpiece.

[0015] In a second aspect, the present invention provides a high-temperature resistant grinding brush prepared by the above-described preparation method, comprising: A heat-resistant metal brush plate has multiple cooling channels and multiple wire planting holes inside, wherein the diameter of the cooling channels is smaller than the diameter of the wire planting holes. Multiple brush filament bundles are fixed to the heat-resistant metal brush plate. Each brush filament bundle is composed of multiple high-temperature resistant composite brush filaments. One end of each brush filament bundle has an anchoring head formed by high-frequency induction melting and spheroidization, and is fixed in the filament planting hole of the heat-resistant metal brush plate through a metallurgical bonding layer. The high-temperature resistant composite brush filament includes a high-temperature resistant metal matrix and inorganic wear-resistant particles dispersed therein.

[0016] In one embodiment, the high-temperature resistant metal matrix is ​​a nickel-based alloy, a cobalt-based alloy, or high-temperature stainless steel, and the inorganic wear-resistant particles are at least one of silicon carbide, boron carbide, alumina, or diamond micropowder.

[0017] In one embodiment, the cooling channel on the heat-resistant metal brush plate is a through channel for introducing cooling gas.

[0018] The advantages or beneficial effects of the above technical solutions include at least the following: the cooling channel design of the heat-resistant metal brush plate can effectively reduce the temperature at the root of the brush bristles, prevent overheating failure of the metallurgical bonding layer, and further improve reliability and lifespan; the combination of the high-temperature resistant composite brush bristles, anchor head, and metallurgical bonding layer can improve the stability of the brush bristle bundle on the heat-resistant metal brush plate and prevent the brush bristle bundle from falling off under high temperature and high speed conditions; the brush bristle bundle made of high-temperature resistant metal matrix and inorganic wear-resistant particles can work for a long time in a high temperature environment of 500°C-900°C without softening or oxidation failure; the inorganic wear-resistant particles provide wear resistance, and the high-temperature resistant metal matrix provides good toughness, thereby reducing the wear of the brush bristle bundle. Attached Figure Description

[0019] The accompanying drawings illustrate exemplary embodiments of the invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0020] Figure 1 A schematic diagram of the high-frequency induction heating device of the present invention is shown; Figure 2 A schematic diagram of the induction heating head module and cooling system of the present invention is shown; Figure 3 A schematic diagram of the cooling system of the present invention is shown; Figure 4 A schematic diagram of the clamping mechanism of the present invention is shown; Figure 5 A schematic diagram of the high-temperature resistant abrasive brush of the present invention is shown; Figure 6 A cross-sectional schematic diagram of the heat-resistant metal brush plate of the present invention is shown; Figure 7 A schematic diagram of the brush filament bundle of the present invention is shown; Figure 8 A cross-sectional schematic diagram of the high-temperature resistant composite brush bristles of the present invention is shown.

[0021] Explanation of reference numerals in the attached figures: 10. High-frequency induction heating equipment; 11. Main body; 12. Y-axis moving mechanism; 13. X-axis moving mechanism; 14. Z-axis moving mechanism; 15. Induction heating head module; 151. Support; 152. Small induction coil unit; 153. Nozzle fixing ear; 16. Clamping mechanism; 161. First support base; 1611. First placement slot; 162. Second support base; 1621. Second placement slot; 163. Clamping assembly; 1631. Support frame; 1632. Clamping area; 1633. Cylinder; 1634. Clamping head; 1635. Clamping slot; 17. Cooling system; 171. Cooling nozzle; 172. Centralized pipe; 18. High-frequency induction power supply; 20. High-temperature resistant abrasive brush; 21. Heat-resistant metal brush plate; 211. Cooling channel; 212. Wire planting hole; 22. Brush filament bundle; 221. High-temperature resistant composite brush filament; 2211. High-temperature resistant metal matrix; 2212. Inorganic wear-resistant particles; 222. Anchor head; 23. Metallurgical bonding layer. Detailed Implementation

[0022] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the invention. It should be understood that the accompanying drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other. The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0025] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0026] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0027] The names of the messages or information exchanged between the multiple devices in the embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0028] Example 1 See Figures 1 to 8 The present invention provides a method for preparing a high-temperature resistant grinding brush, comprising the following steps; Preparation of S1, High-Temperature Resistant Composite Brush Filaments 221: S11. Material Preparation: A high-temperature resistant metal matrix 2211 (such as nickel-based alloy fiber, cobalt-based alloy fiber, or stainless steel fiber) and inorganic wear-resistant particles 2212 (such as silicon carbide, boron carbide, alumina, or diamond powder) are mixed at a weight ratio of (70%-90%):(10%-30%) to obtain a mixture. Preferably, the particle size of the inorganic wear-resistant particles 2212 is 10μm-150μm.

[0029] S12. Surface pretreatment: The inorganic wear-resistant particles 2212 are subjected to surface activation treatment (such as pickling, coupling agent coating) to enhance their interfacial bonding with the metal substrate.

[0030] S13. Composite filament forming: The mixture is prepared into continuous and uniform high-temperature resistant composite brush filaments 221 by powder metallurgy drawing or melt-coating drawing. The diameter of the composite brush filaments is 0.05mm-0.5mm.

[0031] S2, Brush filament bundle 22 forming and pretreatment: The high-temperature resistant composite brush filaments 221 obtained in step S1 are cut to a predetermined length and bundled into a brush filament bundle 22. The implanted end of the brush filament bundle 22 is melted and spheroidized by a high-frequency induction heating device 10 to form an integral anchor head 222 with a diameter larger than that of a single filament, so as to prevent the high-temperature resistant composite brush filaments 221 from falling off the heat-resistant metal brush plate 21.

[0032] Preparation of S3, heat-resistant metal brush plate 21: A heat-resistant metal brush plate 21 with uniformly arrayed filament holes 212 is fabricated from heat-resistant steel plate or high-temperature alloy plate. A cooling channel 211 is formed on the heat-resistant metal brush plate 21, which can be circulated with inert gas (such as nitrogen or argon) or a small amount of cooling air to actively cool the roots of the high-temperature composite brush filaments 221 from inside the heat-resistant metal brush plate 21.

[0033] S4. Wire grafting and fixation: In step S2, the bristle bundle 22 with anchor heads 222 is inserted into the bristle planting hole 212 from the heat-resistant metal brush plate 21. Then, using a high-temperature brazing or diffusion welding process, the anchor heads 222 of the bristle bundle 22 are firmly welded to the heat-resistant metal brush plate 21 under a protective atmosphere to form a dense metallurgical bonding layer 23, ensuring that the bristles do not loosen or fall off under high temperature and high-speed rotation.

[0034] S5. Trimming and Shaping: Mechanical trimming (e.g., shearing) is performed on the bristle surface of the welded bristle bundle 22 to form the desired bristle profile (e.g., flat or arc-shaped), resulting in a high-temperature resistant abrasive brush 20.

[0035] In one embodiment, see Figures 1 to 4 The high-frequency induction heating device 10 includes a main body 11, a Y-axis moving mechanism 12, an X-axis moving mechanism 13, and a Z-axis moving mechanism 14. An induction heating head module 15 is provided at the output end of the Z-axis moving mechanism 14. A clamping mechanism 16 for clamping the brush filament bundle 22 is provided on the main body 11. A cooling system 17 is provided on the induction heating head module 15. A high-frequency induction power supply 18 and a control system for controlling the Y-axis moving mechanism 12, the X-axis moving mechanism 13, the Z-axis moving mechanism 14, the induction heating head module 15, the clamping mechanism 16, and the cooling system 17 are provided in the main body 11. The control system is electrically connected to the high-frequency induction power supply 18 (e.g., 30-80kHz, 10-30kW). The induction heating head module 15 includes a bracket 151 mounted on the output end of the Z-axis moving mechanism 14. A replaceable induction coil matrix is ​​mounted on the bracket 151. The induction coil matrix is ​​composed of multiple independently or grouped small induction coil units 152 arranged (e.g., Figure 2 As shown in the diagram (arranged in a 2x2 matrix), multiple small induction coil units 152 can be individually or in parallel excitation, thereby enabling the start-up and shutdown of the small induction coil units 152 to be controlled separately. The small induction coil unit 152 in the induction coil matrix is ​​a tightly wound solenoid made of copper tube, which allows the inner diameter of the small induction coil unit 152 to be formed in various sizes, so as to be able to adapt to brush bundles 22 of different sizes.

[0036] In order to horizontally clamp and fix the brush filament bundle 22 during the heating process and prevent it from shaking or tipping over, the clamping mechanism 16 includes a first support base 161 and a second support base 162 spaced apart. The top of the first support base 161 and the second support base 162 are respectively provided with a first placement groove 1611 and a second placement groove 1621. A clamping assembly 163 is provided on the side of the first support base 161 facing the second support base 162. The clamping assembly 163 includes a support frame 1631 fixed on the first support base 161. A clamping area 1632 is provided on the support frame 1631. A clamping head 1634 driven by a cylinder 1633 is provided on the support frame 1631. The clamping head 1634 is located in the clamping area 1632. A clamping groove 1635 is provided on the clamping head 1634.

[0037] To adjust the output power of the high-frequency induction power supply 18, achieve closed-loop temperature control during the heating process, and ensure consistent spheroidization quality, a visual positioning and temperature control system can be installed on the first support 161 of the clamping mechanism 16. An industrial camera can be used to identify the end position of the brush filament bundle 22, and an infrared thermometer can be used to monitor the temperature of the melting zone in real time, feeding the signal back to the control system. The Y-axis moving mechanism 12, X-axis moving mechanism 13, and Z-axis moving mechanism 14 can all use linear motors. The control system can be implemented using a PLC or control circuit.

[0038] To facilitate the installation of the cooling system 17, the cooling system 17 includes a cooling nozzle 171 disposed on the induction heating head module 15, the cooling nozzle 171 being used to spray inert gas or compressed air toward the brush bundle 22.

[0039] The cooling nozzles 171 of the integrated cooling system 17 are arranged in a ring around the bracket 151. The bracket 151 is provided with nozzle fixing ears 153 corresponding to the position of the cooling nozzles 171, and the cooling nozzles 171 are fixed on the nozzle fixing ears 153.

[0040] The integrated cooling system 17 also includes a central pipe 172, to which multiple cooling nozzles 171 are connected, and an external air pump is connected to the central pipe 172.

[0041] The small induction coil unit 152, which needs to be activated and adapted to the diameter of the corresponding brush filament bundle 22, is pre-input into the control system, making this position the drive origin of the Y-axis moving mechanism 12, X-axis moving mechanism 13, and Z-axis moving mechanism 14, to facilitate subsequent operations. When the high-frequency induction heating equipment 10 is working, the position of the end of the brush filament bundle 22 is first identified by an industrial camera, and then the control system controls the Y-axis moving mechanism 12, X-axis moving mechanism 13, and Z-axis moving mechanism 14 to drive the induction heating head module 15 and precisely fit it around the end of the brush filament bundle 22 by about 5mm. The corresponding small induction coil unit 152 is activated for heating, and the infrared thermometer monitors the temperature in real time. The control system maintains the temperature within a set range that is 50-150°C higher than the melting point of the brush filament material (e.g., 1400-1500°C for nickel-based alloys) and far below the decomposition temperature of the inorganic wear-resistant particles 2212, for 2-5 seconds. After heating stops, the cooling nozzle 171 immediately sprays air, and the molten metal at the tip of the brush bristles shrinks into a spherical shape under the action of surface tension and solidifies rapidly, forming a firm anchor head 222.

[0042] In the preparation of high-temperature resistant abrasive brush 20 for cleaning oxide scale from the surface of hot-rolled steel billets S1. Preparation of High-Temperature Resistant Composite Brush Filament 221: Nickel-chromium alloy (Inconel 600) fibers (0.1 mm in diameter) and black silicon carbide (SiC) particles with a particle size of 80 μm are mixed at a weight ratio of 85:15. The SiC particles are pretreated with a silane coupling agent. Using a melt-coating drawing method, the alloy wire is heated to a semi-molten state, and the SiC particles are embedded into the surface and shallow layer of the wire through a special die, and then drawn into a high-temperature resistant composite brush filament 221 with a diameter of 0.25 mm.

[0043] S2. Forming and pretreatment of brush filament bundle 22: Cut the high-temperature resistant composite brush filaments 221 into 60mm lengths, and bundle 200 filaments together. Use a high-frequency induction heating device 10 to rapidly melt the ends of the bundles (about 5mm long) to form spherical anchor heads 222 with a diameter of about 1.2mm.

[0044] S3. Preparation of heat-resistant metal brush plate 21: A rectangular brush plate with a length and width of 200mm and a thickness of 15mm is processed from 310S stainless steel plate, and wire planting holes 212 are evenly distributed. A straight through cooling channel 211 is drilled inside the heat-resistant metal brush plate 21, so that the cooling channel 211 communicates with the wire planting holes 212.

[0045] S4. Wire Planting and Fixing: Insert the anchoring head 222 of the brush filament bundle 22 into the wire planting hole 212 of the heat-resistant metal brush plate 21. In a vacuum brazing furnace, use nickel-based brazing filler metal to braze at 1050°C and hold for 10 minutes to form a strong metallurgical bond.

[0046] S5. Trimming and Shaping: Cut the bristle surface so that the free end length of the filament hole 212 is 50mm.

[0047] This grinding brush is used for online cleaning of hot-rolled steel billets in an environment of around 600°C, with a service life of over 400 hours, while the service life of ordinary high-temperature steel wire brushes is usually less than 80 hours.

[0048] Example 2 See Figures 5 to 8 An embodiment of the present invention provides a high-temperature resistant grinding brush prepared by the above-described method, comprising: The heat-resistant metal brush plate 21 has multiple cooling channels 211 and multiple wire planting holes 212 inside, and the diameter of the cooling channels 211 is smaller than the diameter of the wire planting holes 212. Multiple brush filament bundles 22 are fixed on the heat-resistant metal brush plate 21. Each brush filament bundle 22 is composed of multiple high-temperature resistant composite brush filaments 221. One end of the brush filament bundle 22 has an anchor head 222 formed by high-frequency induction melting and spheroidization, and is fixed in the wire planting hole 212 of the heat-resistant metal brush plate 21 through the metallurgical bonding layer 23. The high-temperature resistant composite brush filament 221 includes a high-temperature resistant metal matrix 2211 and inorganic wear-resistant particles 2212 dispersed therein.

[0049] The high-temperature resistant metal matrix 2211 is a nickel-based alloy, a cobalt-based alloy, or a high-temperature stainless steel, and the inorganic wear-resistant particles 2212 are at least one of silicon carbide, boron carbide, alumina, or diamond micro powder.

[0050] The cooling channel 211 on the heat-resistant metal brush plate 21 is a through channel for introducing cooling gas. When introducing cooling gas, external air pipes can be pre-connected to both ends of the cooling channel 211 to the outside of the grinding area to prevent dust from entering during the grinding process.

[0051] With the above structure, when grinding the product, the cooling channel 211 of the heat-resistant metal brush plate 21 can effectively reduce the temperature at the root of the brush bristles, prevent the metallurgical bonding layer 23 from overheating and failing, and further improve reliability and lifespan. With the cooperation of the high-temperature resistant composite brush bristles 221, anchor head 222 and metallurgical bonding layer 23 of the brush bristle bundle 22, the stability of the brush bristle bundle 22 on the heat-resistant metal brush plate 21 can be improved, and the brush bristle bundle 22 can be prevented from falling off under high temperature and high speed conditions. The brush bristle bundle 22 made of high-temperature resistant metal matrix 2211 and inorganic wear-resistant particles 2212 can work for a long time in a high temperature environment of 500°C-900°C without softening or oxidation failure. The inorganic wear-resistant particles 2212 provide wear resistance, and the high-temperature resistant metal matrix 2211 provides good toughness, thereby reducing the wear of the brush bristle bundle 22.

[0052] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A method of making a high temperature resistant abrasive brush, characterized by, Includes the following steps; S1. Prepare high-temperature resistant composite brush bristles, wherein the high-temperature resistant composite brush bristles are composed of a high-temperature resistant metal matrix and inorganic wear-resistant particles uniformly distributed therein, wherein the high-temperature resistant metal matrix is ​​a nickel-based alloy, a cobalt-based alloy, or high-temperature stainless steel. The inorganic wear-resistant particles are at least one of silicon carbide, boron carbide, alumina, or diamond micro powder; the inorganic wear-resistant particles account for 10%-30% of the weight and have a particle size of 10μm-150μm. S2. The high-temperature resistant composite brush filaments are bundled into a brush filament bundle, and the implanted end of the brush filament bundle is reinforced to form an anchor head. The end strengthening treatment involves using a high-frequency induction heating device to melt and spheroidize the ends of multiple high-temperature resistant composite brush filaments into a single anchor head. S3. Prepare a heat-resistant metal brush plate with cooling channels, and process multiple wire planting holes communicating with the cooling channels in the heat-resistant metal brush plate. S4. Insert the anchoring head of the brush filament bundle into the filament planting hole of the heat-resistant metal brush plate, and fix it to the heat-resistant metal brush plate through a high-temperature metallurgical bonding process. The high-temperature metallurgical bonding process is high-temperature brazing or diffusion welding in a protective atmosphere or vacuum environment. S5. Trim and shape the free end of the bristle bundle to obtain a high-temperature resistant abrasive brush.

2. The method for preparing the high-temperature resistant grinding brush as described in claim 1, characterized in that, In step S1, the composite brush filament is prepared by powder metallurgy drawing or melt-coating drawing.

3. The method for preparing the high-temperature resistant grinding brush as described in claim 1, characterized in that, The high-frequency induction heating device includes a main body, on which a Y-axis moving mechanism is provided, an X-axis moving mechanism is provided on the Y-axis moving mechanism, and a Z-axis moving mechanism is provided on the X-axis moving mechanism. An induction heating head module is provided at the output end of the Z-axis moving mechanism. A clamping mechanism for clamping the brush filament bundle is provided on the main body. A cooling system is provided on the induction heating head module. A high-frequency induction power supply and a control system for controlling the Y-axis moving mechanism, the X-axis moving mechanism, the Z-axis moving mechanism, the induction heating head module, the clamping mechanism, and the cooling system are provided in the main body. The control system is electrically connected to the high-frequency induction power supply. The induction heating head module includes a bracket installed at the output end of the Z-axis moving mechanism. The bracket is equipped with a replaceable induction coil matrix, which is composed of multiple small induction coil units that are driven independently or in groups. The cooling system includes cooling nozzles disposed on the induction heating head module, the cooling nozzles being used to spray inert gas or compressed air toward the brush filament bundle.

4. The method for preparing the high-temperature resistant grinding brush as described in claim 1, characterized in that, The small induction coil units in the induction coil matrix are tightly wound solenoids made of copper tubes, allowing the inner diameter of the small induction coil units to be of various sizes.

5. The method for preparing the high-temperature resistant grinding brush as described in claim 3, characterized in that, The cooling nozzles of the integrated cooling system are arranged in a ring around the periphery of the bracket. The bracket is provided with nozzle fixing ears at the positions corresponding to the cooling nozzles, and the cooling nozzles are fixed on the nozzle fixing ears.

6. The method for preparing the high-temperature resistant grinding brush as described in claim 3, characterized in that, The integrated cooling system also includes a central pipe, and multiple cooling nozzles are connected to the central pipe. An air pump is connected to the central pipe.

7. The method for preparing the high-temperature resistant grinding brush as described in claim 3, characterized in that, The clamping mechanism includes a first support base and a second support base spaced apart. The top of the first support base and the second support base are respectively provided with a first placement groove and a second placement groove. A clamping assembly is provided on the side of the first support base facing the second support base. The clamping assembly includes a support frame fixed on the first support base. A clamping area is provided on the support frame. A clamping head driven by a cylinder is provided on the support frame. The clamping head is located in the clamping area. A clamping groove is provided on the clamping head.

8. A high-temperature resistant grinding brush prepared by the method according to any one of claims 1-7, characterized in that, include: A heat-resistant metal brush plate has multiple cooling channels and multiple wire planting holes inside, wherein the diameter of the cooling channels is smaller than the diameter of the wire planting holes. Multiple brush filament bundles are fixed to the heat-resistant metal brush plate. Each brush filament bundle is composed of multiple high-temperature resistant composite brush filaments. One end of each brush filament bundle has an anchoring head formed by high-frequency induction melting and spheroidization, and is fixed in the filament planting hole of the heat-resistant metal brush plate through a metallurgical bonding layer. The high-temperature resistant composite brush filament includes a high-temperature resistant metal matrix and inorganic wear-resistant particles dispersed therein.

9. The high-temperature resistant grinding brush as described in claim 8, characterized in that, The high-temperature resistant metal matrix is ​​a nickel-based alloy, a cobalt-based alloy, or high-temperature stainless steel, and the inorganic wear-resistant particles are at least one of silicon carbide, boron carbide, alumina, or diamond micro powder.

10. The high-temperature resistant grinding brush as described in claim 8, characterized in that, The cooling channel on the heat-resistant metal brush plate is a through channel for introducing cooling gas.

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