High-speed grinding wheel and preparation method thereof

Abstract

The invention relates to the technical field of abrasive tools, and discloses a high-speed grinding wheel and a high-speed grinding wheel preparation method. The high-speed grinding wheel comprises a base body and a grinding material layer. The grinding material layer is arranged on the peripheral surface of the base body and is fixedly adhered to the base body; the grinding material layer comprises grinding particles, a binding agent and fibers / whiskers; and the fibers / whiskers are arranged in a radial manner. Therefore, the radial strength of the grinding material layer of the grinding wheel is remarkably improved through the directional enhancement technology, the performance bottleneck caused by insufficient strength of a traditional grinding wheel under the high-speed or ultra-high-speed grinding working condition is broken through, reliability is high, and the service life is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of abrasive tools, and specifically relates to a high-speed grinding wheel and a method for preparing the high-speed grinding wheel. Background Art

[0002] Grinding wheels are usually composed of binders, abrasive grains and pores. Compared with resin and metal binders, vitrified binders have attracted extensive attention due to their comprehensive advantages in bonding strength, self-sharpening, pore controllability and thermal stability. However, vitrified bond grinding wheels have the problems of high overall brittleness, poor impact resistance and bending resistance, and under ultra-high-speed grinding conditions, centrifugal force can easily cause fatigue cracks at the interface between the binder and the abrasive grains, and even cause grinding wheel explosion accidents.

[0003] In order to improve the performance of the binder, the existing technology mainly enhances the bonding ability of the binder and the abrasive by adding modifiers. However, this method has problems such as difficulty in ensuring dispersion uniformity and incomplete chemical bonding interface. It cannot meet the requirements of ultra-high-speed grinding for high strength and high reliability of the grinding wheel. Summary of the invention

[0004] The purpose of the present application is to provide a high-speed grinding wheel and a method for preparing a high-speed grinding wheel, so as to solve the problem that the existing ceramic bond grinding wheel cannot meet the requirements of high strength and high reliability of the grinding wheel for ultra-high-speed grinding processing.

[0005] In order to achieve the above-mentioned object, the first aspect of the present application provides a high-speed grinding wheel, comprising:

[0006] matrix; and

[0007] an abrasive layer, arranged on the outer peripheral surface of the substrate and bonded and fixed to the substrate, the abrasive layer comprising abrasive grains, a binder and fibers / whiskers;

[0008] Wherein, the fibers / whiskers are arranged radially.

[0009] As a further improvement of the above technical solution:

[0010] In some embodiments, the fibers / whiskers in the abrasive layer are uniformly and orderly arranged in a radially radial manner.

[0011] In some embodiments, the distance between the fibers / whiskers is 10-300 μm, and the diameter of the fibers / whiskers is 0.1-10 μm.

[0012] In some embodiments, the fiber / whisker is made of one of Si3N4, ZrO2, SiO2, and SiC.

[0013] In some embodiments, the abrasive particles have a particle size of 80-800 mesh.

[0014] In some embodiments, the abrasive grains are made of polycrystalline diamond or polycrystalline cubic boron nitride.

[0015] In some embodiments, the abrasive layer is fixed to the substrate by bonding with epoxy resin or polyurethane glue; and / or

[0016] The substrate is a steel substrate or a CFRP substrate.

[0017] A second aspect of the present application provides a method for preparing a high-speed grinding wheel, which is used to prepare the high-speed grinding wheel according to the first aspect, and the preparation method comprises:

[0018] S100: preparing a mud material for preparing an abrasive layer segment, wherein the abrasive grains, the binder and the fibers / whiskers are added to the mud material, wherein the abrasive layer is composed of a plurality of the abrasive layer segments spliced ​​together;

[0019] S200: crushing the slurry and placing it in an extruder for repeated slurry kneading to fully and evenly mix the abrasive particles, the binder and the fibers / whiskers to obtain a mixed slurry suitable for injection molding;

[0020] S300: injecting the mixed slurry in series through a multi-screw machine to form a green body of a grinding wheel abrasive layer;

[0021] S400: Degreasing and sintering the grinding wheel abrasive layer green body to obtain an ordered fiber / whisker reinforced abrasive layer segment for a grinding wheel;

[0022] S500: bonding and fixing the required abrasive layer segments to the prepared substrate to obtain the high-speed grinding wheel.

[0023] As a further improvement of the above technical solution:

[0024] In some embodiments, the slurry prepared for preparing the abrasive layer segment comprises:

[0025] S110: Heat and stir the paraffin wax to 65°C ± 5°C to melt;

[0026] S120: Add EVA and stearic acid in sequence, stir, raise the temperature to 95°C ± 5°C, and stir until they are mutually dissolved;

[0027] S130: Then add the abrasive particles, the fibers / whiskers and the binder, and stir them synchronously during the adding process to obtain the uniformly mixed mud.

[0028] In some embodiments, the relative mass fraction ratio of the abrasive particles, the fibers / whiskers and the binder added to the mud is 15% to 55%: 10 to 40%: 30 to 50%.

[0029] Compared with the prior art, the high-speed grinding wheel and the method for preparing the high-speed grinding wheel provided in the present application have at least the following beneficial effects:

[0030] The high-speed grinding wheel provided by the present application is added to the abrasive layer by mixing abrasive particles, a binder and a fiber / whisker, and is injected in series by a multi-screw machine so that the fiber / whisker is arranged in a radial radial shape for directional reinforcement. It is understandable that, since the mixed melt in the screw machine exhibits the transient, non-isothermal flow and heat transfer characteristics of a non-Newtonian fluid during the molding and filling process, under the laminar state, the force on the fiber / whisker is relatively stable, and the direction is gradually adjusted under the action of the shear force, and finally an orderly arrangement consistent with the melt flow direction is achieved, so that after the abrasive layer is formed, the fiber / whisker can be arranged in a radial radial shape. In this way, the radial strength of the abrasive layer of the grinding wheel is significantly improved by directional reinforcement technology, breaking through the performance bottleneck caused by insufficient strength of the traditional grinding wheel under high-speed or ultra-high-speed grinding conditions, with high reliability and extended service life.

[0031] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0033] Figure 1 A schematic diagram of the structure of a high-speed grinding wheel provided in an embodiment of the present application;

[0034] Figure 2 A flow chart of a first high-speed grinding wheel preparation method provided in an embodiment of the present application;

[0035] Figure 3 A flow chart of a second method for preparing a high-speed grinding wheel provided in an embodiment of the present application.

[0036] Description of Reference Numerals

[0037] 100, matrix;

[0038] 200, abrasive layer; 210, abrasive layer segment; 220, fiber / whisker. DETAILED DESCRIPTION

[0039] The specific implementation of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present application, and is not used to limit the present application.

[0040] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0041] Embodiment 1

[0042] See also Figure 1 The embodiment provides a high-speed grinding wheel, and in particular provides an ultra-high-speed grinding wheel reinforced with anisotropic ordered fibers / whiskers 220. The high-speed grinding wheel can be used in high-speed or ultra-high-speed grinding conditions.

[0043] The high-speed grinding wheel provided in the present application comprises a base 100 and an abrasive layer 200. The abrasive layer 200 is arranged on the outer peripheral surface of the base 100 and is bonded and fixed to the base 100.

[0044] In this embodiment, the abrasive layer 200 includes abrasive grains, a binder, and fibers / whiskers 220. That is, the abrasive layer 200 contains abrasive grains, a binder, and fibers / whiskers 220, and the abrasive grains, the binder, and the fibers / whiskers 220 are in a mixed state without obvious stratification, but the fibers / whiskers 220 are arranged radially in the abrasive layer 200.

[0045] It should be noted that the substrate 100 is designed to be in a disc shape, so that the fibers / whiskers 220 are radially arranged along the radial direction of the substrate 100 .

[0046] The abrasive layer 200 includes a plurality of abrasive layer segments 210, which are sequentially spliced ​​around the outer circumference of the substrate 100 to form the abrasive layer 200. The abrasive layer segments 210 are injection molded using an injection machine and a molding mold. The fibers / whiskers 220 in each abrasive layer segment 210 are radially arranged.

[0047] Further, in this embodiment, the fibers / whiskers 220 in the abrasive layer 200 are arranged uniformly and orderly in a radially radial manner, for example, the spacing and orientation are regular and orderly, and this arrangement is considered to be a uniform and orderly arrangement. However, the statement that this uniformity and order is not absolute, but a general description of the overall morphology of the material.

[0048] In this way, by arranging the fibers / whiskers 220 in an orderly manner, the radial strength of the abrasive layer of the grinding wheel is improved, breaking through the performance bottleneck of the traditional grinding wheel caused by insufficient strength under high-speed or ultra-high-speed grinding conditions, with high reliability and extended service life.

[0049] In some embodiments, the spacing between the fibers / whiskers 220 in the abrasive layer 200 is 10-300 μm.

[0050] It can be understood that the spacing control of the fibers / whiskers 220 in the abrasive layer 200 in this embodiment can enhance the uniformity of stress distribution of the abrasive layer 200, hinder crack propagation and improve grinding performance. Specifically, the fibers / whiskers 220 adopt a spacing within this range, which can distribute stress more evenly, reduce local stress concentration, and improve the overall impact resistance of the grinding wheel; can effectively hinder crack propagation, and improve the fracture toughness and fatigue performance of the material; the fibers / whiskers 220 with this spacing can better support the abrasive particles, reduce the wear of the abrasive particles, and extend the service life of the grinding wheel.

[0051] Optionally, the distance between the fibers / whiskers 220 in the abrasive layer 200 can be controlled to be 10-240 μm.

[0052] It should be noted that the spacing between the fibers / whiskers 220 in the abrasive layer 200 can only be controlled within a certain range and there will be a certain error.

[0053] In some embodiments, the diameter of the fibers / whiskers 220 in the abrasive layer 200 is 0.1-10 μm.

[0054] It can be understood that the diameter control of the fiber / whisker 220 in the abrasive layer 200 in this embodiment can obtain high bonding strength and increase the toughness of the abrasive layer. Specifically, the diameter within this range can make the fiber / whisker 220 have a higher specific surface area, can form more bonding points with the binder and abrasive particles, and enhance the interface bonding strength; the fiber / whisker 220 can better disperse stress and reduce stress concentration during the grinding process. Compared with coarse fibers, the fiber / whisker 220 is more likely to cause multiple cracks to expand, thereby delaying the overall failure of the abrasive layer 200 of the grinding wheel.

[0055] In some other embodiments, the diameter of the fibers / whiskers 220 in the abrasive layer 200 is 0.1-8 μm.

[0056] Optionally, the diameter of the fiber / whisker 220 in the abrasive layer 200 can also be 0.2 μm, 0.24 μm, 0.28 μm, 0.32 μm, 0.4 μm, 0.42 μm, 0.55 μm, 0.59 μm, 0.64 μm, 0.68 μm, 0.7 μm, 0.732 μm or 0.78 μm. It should be understood that the above-mentioned limitation on the diameter of the fiber / whisker 220 is for illustration only and is not intended to limit the scope of protection of the present application.

[0057] In some embodiments, the length of the fibers / whiskers 220 in the abrasive layer 200 is 1-1000 μm.

[0058] It is understandable that the use of fibers / whiskers 220 of appropriate length in the abrasive layer 200 can enhance mechanical properties, optimize cutting performance and improve self-sharpening. Specifically, a moderate length can significantly improve the flexural strength and impact resistance of the grinding wheel. For example, the length and diameter ratio of nano-silicon carbide whiskers can significantly improve the flexural strength of the grinding wheel; a moderate length can ensure that the fibers / whiskers 220 better participate in cutting during the grinding process, while reducing entanglement or breakage caused by excessively long fibers 220; fibers / whiskers 220 of appropriate length can gradually wear out during the grinding process to form new cutting edges, thereby improving the self-sharpening of the grinding wheel.

[0059] In some embodiments, the length of the fibers / whiskers 220 added to the abrasive layer 200 may be 60-960 μm.

[0060] In some other embodiments, the length of the fibers / whiskers 220 added to the abrasive layer 200 may be 100-850 μm.

[0061] Optionally, the length of the fiber / whisker 220 added to the abrasive layer 200 can also be 140 μm, 180 μm, 200 μm, 260 μm, 320 μm, 410 μm, 480 μm, 500 μm, 580 μm, 620 μm, 690 μm, 750 μm or 840 μm. It should be understood that the above-mentioned limitation on the length of the fiber / whisker 220 is for illustration only and is not intended to limit the scope of protection of the present application.

[0062] Optionally, the material of the fiber / whisker 220 is one of Si3N4, ZrO2, SiO2, and SiC. In other words, the fiber / whisker 220 added to the abrasive layer 200 can be one of the above four materials. Of course, in some embodiments, the fiber / whisker 220 added to the abrasive layer 200 can be multiple of the above four materials.

[0063] Optionally, the bonding agent can be a vitrified bonding agent. In this way, by utilizing the characteristics of the vitrified bonding agent itself and applying it to the grinding wheel, the grinding wheel can be excellent in hardness, heat resistance, chemical stability, bonding strength, etc., and is suitable for high-precision and high-efficiency grinding processing.

[0064] Optionally, the particle size of the abrasive is selected to be 80-800 mesh. This can cover a variety of processing requirements from coarse grinding to fine grinding, wherein coarser abrasives (such as 80-100 mesh) are suitable for coarse grinding, which can quickly remove materials and improve processing efficiency; while finer abrasives (such as 320-800 mesh) are suitable for fine grinding and superfine grinding, which can obtain lower surface roughness. Therefore, in this embodiment, the particle size of the abrasive can be selected according to the processing requirements. It is not specifically limited in this embodiment.

[0065] Optionally, the abrasive grains are made of superhard materials such as polycrystalline diamond or polycrystalline cubic boron nitride. In this way, the abrasive layer 200 made of polycrystalline diamond or polycrystalline cubic boron nitride has high hardness, which can significantly improve the wear resistance and service life of the grinding wheel; the abrasive layer 200 made of polycrystalline diamond or polycrystalline cubic boron nitride can achieve high-precision processing, reduce surface roughness, and reduce burns and cracks on the processed surface.

[0066] Furthermore, polycrystalline cubic boron nitride is highly chemically inert to iron-based materials and is suitable for processing hard-to-process metal materials such as hardened steel and tool steel. Polycrystalline diamond is more suitable for processing hard and brittle materials such as cemented carbide, ceramics, and glass.

[0067] In some embodiments, the abrasive layer 200 and the substrate 100 are bonded and fixed by epoxy resin or polyurethane adhesive.

[0068] Optionally, the substrate 100 is a steel substrate or a CFRP (Carbon Fiber Reinforced Polymer) substrate to meet the requirements of high-speed and ultra-high-speed grinding.

[0069] Compared with the prior art, the high-speed grinding wheel provided in this embodiment has the following advantages:

[0070] (1) By arranging the fibers / whiskers 220 in an orderly manner, the disordered distribution of abrasive grains in a conventional grinding wheel is changed, thereby optimizing the cutting force distribution during the grinding process, reducing the grinding force and grinding temperature, and significantly improving the cutting performance and processing efficiency.

[0071] (2) The directional arrangement and reinforcement effect of the fibers / whiskers 220 are utilized to enhance the overall strength and impact resistance of the grinding wheel, and at the same time improve the fatigue resistance of the grinding wheel, making it more suitable for ultra-high-speed grinding conditions.

[0072] (3) The structural design of the ordered fibers / whiskers 220 optimizes the cutting stress distribution during the grinding process, reduces the passivation rate of the abrasive particles, and further improves the durability of the grinding wheel.

[0073] (4) By introducing the ordered fibers / whiskers 220, the bonding area and bonding strength between the abrasive and the binder are increased, and the shedding of the abrasive during the grinding process is reduced, thereby extending the service life of the grinding wheel.

[0074] (5) Conventional grinding wheels require frequent dressing during the grinding process to restore grinding performance, while the ordered fiber / whisker 220 reinforced grinding wheel has a significantly longer dressing interval due to its excellent wear resistance and self-sharpening properties.

[0075] (6) Under high-load and large-cutting grinding conditions, the abrasive grains of traditional grinding wheels are easily broken and fallen off due to impact, while the ordered fiber / whisker 220 reinforced grinding wheel can better withstand high loads and reduce the loss of abrasive grains, making it suitable for high-speed and ultra-high-speed grinding conditions.

[0076] Embodiment 2

[0077] See also Figure 1 and Figure 2 This embodiment provides a method for preparing a high-speed grinding wheel, which is used to prepare the high-speed grinding wheel provided in the above embodiment 1.

[0078] The method for preparing a high-speed grinding wheel provided in this embodiment comprises the following steps:

[0079] S100: preparing a slurry for preparing an abrasive layer segment 210 , wherein abrasive grains, a binder and fibers / whiskers 220 are added to the slurry, wherein the abrasive layer 200 is composed of a plurality of abrasive layer segments 210 spliced ​​together.

[0080] Specifically, the relative mass fraction ratio of the abrasive grains, fibers / whiskers 220 and binder added to the mud is 15% to 55%: 10 to 40%: 30 to 50%.

[0081] S200: After the clay is crushed, it is placed in an extruder for repeated clay kneading to fully and evenly mix the abrasive particles, binder and fiber / whisker 220 to obtain a mixed slurry suitable for injection molding.

[0082] S300: The mixed slurry is injected in series through a multi-screw machine to form a green body of a grinding wheel abrasive layer.

[0083] S400: Degreasing and sintering the green body of the grinding wheel abrasive layer to obtain an abrasive layer segment 210 for a grinding wheel reinforced with ordered fibers / whiskers 220.

[0084] S500: bonding and fixing the required abrasive layer segment 210 to the prepared substrate 100 to obtain a high-speed grinding wheel.

[0085] Please also read Figure 3 Furthermore, the above-mentioned preparation of the mud material for preparing the abrasive layer segment 210 includes the following steps:

[0086] S110: Heat and stir the paraffin wax to 65°C±5°C to melt.

[0087] S120: Add EVA (ethylene-vinyl acetate copolymer) and stearic acid in sequence and stir, and raise the temperature to 95°C ± 5°C, stirring until they are mutually dissolved (paraffin, EVA and stearic acid are mutually soluble).

[0088] S130: Then add abrasive particles, fibers / whiskers 220 and a binder, and stir them synchronously during the adding process to obtain a uniformly mixed mud material.

[0089] The relative mass fraction ratio of paraffin wax:EVA:stearic acid is 75%-88%:18-25%:1-3%.

[0090] In the above step S500, the required abrasive layer segment 210 is bonded and fixed to the prepared substrate 100 mainly by epoxy resin or polyurethane adhesive to obtain an ordered fiber / whisker 220 anisotropically reinforced ultra-high-speed grinding wheel, wherein the curing temperature is 20°C-100°C and the curing time is 1-72 hours.

[0091] In the method for preparing a high-speed grinding wheel provided in the present embodiment, abrasive particles, a binder and a fiber / whisker 220 are mixed and added to the abrasive layer 200, and a multi-screw machine is injected in series, so that the fiber / whisker 220 is arranged in a radial radial shape for directional reinforcement. It can be understood that since the mixed melt in the screw machine exhibits the transient, non-isothermal flow and heat transfer characteristics of a non-Newtonian fluid during the molding and filling process, the force on the fiber / whisker 220 is relatively stable under the laminar state, and the direction is gradually adjusted under the action of the shear force, and finally an orderly arrangement consistent with the melt flow direction is achieved, so that after the abrasive layer block 210 is formed, the fiber / whisker 220 can be arranged in a radial radial shape. In this way, the radial strength of the abrasive layer 200 of the grinding wheel is significantly improved by directional reinforcement technology, breaking through the performance bottleneck caused by insufficient strength of the traditional grinding wheel under high-speed or ultra-high-speed grinding conditions, with high reliability and extended service life.

[0092] It should be noted that in the present application, unless otherwise specified, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0093] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0094] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0096] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A high-speed grinding wheel, characterized in that: include: matrix(100); and an abrasive layer (200), arranged on the outer peripheral surface of the substrate (100) and bonded and fixed to the substrate (100), the abrasive layer (200) comprising abrasive grains, a binder and fibers / whiskers (220); Wherein, the fibers / whiskers (220) are arranged in a radially radiating manner.

2. The high-speed grinding wheel according to claim 1, characterized in that: The fibers / whiskers (220) in the abrasive layer (200) are evenly and orderly arranged in a radially radial manner.

3. The high-speed grinding wheel according to claim 1, characterized in that: The distance between the fibers / whiskers (220) is 10-300 μm, and the diameter of the fibers / whiskers (220) is 0.1-10 μm.

4. The high-speed grinding wheel according to claim 1, characterized in that: The material of the fiber / whisker (220) is one of Si3N4, ZrO2, SiO2 and SiC.

5. The high-speed grinding wheel according to claim 1, characterized in that: The particle size of the abrasive particles is 80-800 meshes.

6. The high-speed grinding wheel according to claim 1, characterized in that: The material of the abrasive grains is polycrystalline diamond or polycrystalline cubic boron nitride.

7. The high-speed grinding wheel according to any one of claims 1 to 6, characterized in that: The abrasive layer (200) and the substrate (100) are bonded and fixed by epoxy resin or polyurethane glue; and / or The substrate (100) is a steel substrate or a CFRP substrate.

8. A method for preparing a high-speed grinding wheel, characterized in that: For preparing a high-speed grinding wheel according to any one of claims 1 to 7, the preparation method comprises: S100: preparing a mud material for preparing an abrasive layer segment (210), wherein the abrasive grains, the binder and the fibers / whiskers (220) are added to the mud material, wherein the abrasive layer (200) is composed of a plurality of the abrasive layer segments (210) spliced ​​together; S200: crushing the slurry and placing it in an extruder for repeated slurry kneading to fully and evenly mix the abrasive particles, the binder and the fibers / whiskers (220) to obtain a mixed slurry suitable for injection molding; S300: injecting the mixed slurry in series through a multi-screw machine to form a green body of a grinding wheel abrasive layer; S400: Degreasing and sintering the grinding wheel abrasive layer green body to obtain an abrasive layer segment (210) for a grinding wheel reinforced with ordered fibers / whiskers (220); S500: bonding and fixing the required abrasive layer segment (210) to the prepared substrate (100) to obtain the high-speed grinding wheel.

9. The method for preparing a high-speed grinding wheel according to claim 8, characterized in that: The mud material prepared for preparing the abrasive layer segment (210) comprises: S110: Heat and stir the paraffin wax to 65°C ± 5°C to melt; S120: Add EVA and stearic acid in sequence, stir, raise the temperature to 95°C ± 5°C, and stir until they are mutually dissolved; S130: Then add the abrasive particles, the fibers / whiskers (220) and the binder, and stir them synchronously during the adding process to obtain the uniformly mixed mud material.

10. The method for preparing a high-speed grinding wheel according to claim 8 or 9, characterized in that: The relative mass fraction ratio of the abrasive grains, the fibers / whiskers (220) and the binder added to the mud is 15% to 55%: 10 to 40%: 30 to 50%.

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