CN103372817A - Improved tool - Google Patents

Abstract

The present invention discloses an improved tool. Wherein, the improved tool includes: a reinforcing member; a resin layer is coated on the reinforcing member; and the weight of the resin layer is less than 15% of the total weight of the improved tool. The invention greatly reduces the production cost under the premise of keeping its application performance unchanged.

Description

a tool for improvement

technical field

The invention relates to a reinforced base material and an abrasive tool provided with the reinforced base material, in particular to a fiber-reinforced mesh cloth applied to a grinding wheel, and a thin grinding wheel comprising the fiber-reinforced mesh cloth.

Background technique

Consolidated abrasives, commonly referred to as grinding wheels, are generally composed of abrasive matrix layers or grinding layers, and glass fiber reinforced mesh cloth (also known as "fiber reinforced mesh"). Among them, using fiber-reinforced mesh as a reinforcing base material is a common and effective means to improve the toughness of grinding wheels, especially resin grinding wheels. The function of the glass fiber reinforced mesh is to enhance the toughness of the grinding wheel and ensure its safety; the grinding wheel will not burst due to centrifugal force during high-speed rotation, threatening the life and safety of the operator. Therefore, glass fiber reinforced mesh is an indispensable reinforcing substrate in consolidated abrasive tools.

In the prior art, the glass fiber reinforced mesh is made by dipping method, that is, the woven glass fiber fabric is first immersed in the resin infiltration agent, and the middle of the dried glass fiber reinforced mesh is a fiber fabric layer. The upper and lower surfaces are resin layers. The resin layer, also known as the combustible material layer, is generally formed by curing thermosetting resins such as epoxy resin or phenolic resin, solvents, surfactants, and additives. As far as those skilled in the art are concerned, the resin layer is indispensable and must have a certain thickness because it has the following functions:

1. After the glass fiber reinforced mesh is cured, a strong texture interface is produced to enhance its hardness;

2. Ensure the process requirements of glass fiber reinforced mesh, that is, have certain toughness and flatness;

3. During the pressing process of the grinding wheel, protect the glass fiber fabric from being damaged by the extrusion of abrasive particles;

4. Provide chemical bonds to effectively bond the abrasive matrix and the glass fiber fabric together.

Therefore, the glass fiber reinforced net cloth structure in the prior art is as follows:

1. There is a glass fiber fabric layer;

2. The two surfaces of the fiberglass fabric layer are coated with phenolic resin by dipping method;

3. The combustibles content of the glass fiber mesh cloth (i.e. the weight percentage of the weight of the impregnated coating after curing to the entire mesh cloth, or the weight percentage of the resin weight to the entire mesh cloth, for ease of understanding hereinafter collectively referred to as "resin content") The range should be above 30%.

According to the above description of the prior art solutions, the fiberglass mesh must contain a higher resin content, the reason being that the bursting speed and the grinding ratio (material removal/grinding wheel wear) are very important for grinding wheels, especially thin grinding wheels. Two important performance indicators, in order to prevent the grinding wheel from bursting at high speeds, the grinding wheel, especially the thin grinding wheel, must be reinforced by a glass fiber mesh cloth coated with a phenolic-based impregnated coating; according to my country's current national standards on the machinery industry , The resin content of the fiber-reinforced mesh cloth of the consolidated abrasive tool should not be less than 28%. The resin content can be measured by the following method.

Weigh the quality of the glass fiber reinforced mesh sample and mark it as W ₁ , put it in a drying oven with a temperature of 160°C±2°C and dry it for 20 minutes, take it out and put it in a desiccator to cool to room temperature, weigh its mass, and mark it W ₂ , then put the sample in a high-temperature furnace at 600°C±20°C and burn for 1 hour, take it out and put it in a desiccator to cool to room temperature, weigh the mass of the sample, and mark it as W ₃ . The resin content of glass fiber reinforced mesh is calculated as follows.

Those skilled in the art believe that the resin content above 28% can make the glass fiber have a certain rigidity and interface strength, and can ensure a reliable bursting speed of the grinding wheel.

In addition, currently in actual production, the resin content of the glass-reinforced mesh used for the grinding wheel is 33%±3%.

However, prior art glass fiber reinforced meshes have the following drawbacks.

1. The cost of raw materials is high, because those skilled in the art generally believe that in order to ensure the reliability and toughness of the grinding wheel, the resin content of its glass fiber mesh cloth should not be less than 28%, so a large amount of resin is used to coat the glass fiber fabric layer On the other hand, the cost of resin generally accounts for 30-50% of the cost of glass fiber reinforced mesh, and glass fiber reinforced mesh accounts for 20-40% of the cost of grinding wheel; The resin content can range from 15% to 50%, but the example it gives is still 30% recognized by those skilled in the art, and it is important to point out that the fiberglass fabric is impregnated with a certain resin, and the content range is only For ordinary grinding wheels with low thickness requirements, not thin grinding wheels or high-speed grinding wheels.

2. Because the glass fiber mesh is coated with more resin, it will form a thicker overall thickness, so that when making grinding wheels, especially thin grinding wheels, it cannot be made thinner (thinner grinding wheels will save in metal processing) The material to be processed, especially the processing of precious metal materials is still important), or in order to ensure the thickness, abandon or cannot add enough base material in the abrasive matrix layer.

3. Excessive use of resin layer materials will pollute the environment and affect human health. Thermosetting resins such as phenolic resins will release formaldehyde and other toxic volatile compound gases.

Contents of the invention

The purpose of this invention is to provide a kind of fiber reinforced mesh cloth, which uses less resin material, solves the above-mentioned defects and problems existing in the prior art, and more importantly, it overcomes the long-standing problems existing in those skilled in the art A technical prejudice, that is, the bursting of glass fiber reinforced mesh or grinding wheel for consolidated abrasive tools is related to the resin content of the reinforced mesh. The resin content must be higher than 28% to ensure the toughness of the grinding wheel and other working properties, and to ensure The grinding wheel has a high burst speed and meets safety standards.

The reason why those skilled in the art have this technical prejudice is: when emery wheel especially thin emery wheel is engaged in high-speed cutting or grinding work, centrifugal force produces circumferential tensile stress, and the object of high-speed rotation is thus easier to burst; For its bursting speed, glass fibers coated with a resin layer must be set in the grinding wheel. These ductile glass fiber bundles can provide crack bridging force to toughen the brittle abrasive matrix layer, thereby reducing cracks in the abrasive matrix layer. Tip stress; Those skilled in the art believe that after the glass fiber is coated with about 40% phenolic resin by dipping, due to this coating, a solid layer is formed between the glass fiber reinforced mesh and the abrasive matrix of the grinding wheel after consolidation. Fiber/abrasive interface layer, which strengthens the grinding wheel and makes it less likely to burst under high-speed rotation.

However, the inventors of the present invention have found through research that the burst speed of the emery wheel has no monotonic relationship with the coating amount of phenolic resin, that is, the more the resin coating amount, the higher the burst speed of the emery wheel; Cutting ratio, further test data shows that a small amount of resin coating only slightly reduces the grinding ratio of the grinding wheel, but it is still within the acceptable range of grinding work requirements, so the amount of resin coating can be greatly reduced.

The principle of the present invention is, according to the theory of mesomechanics [Victor C.Li and Hwai-Chung Wu, Conditions for pseudo strain-hardening in fiber reinforced brittle matrix composites, Applied mechanics review, Vol45, No8, pp390-398, 1991; G Bao and Z suo, Remarks on crack-bridging concepts, Applied mechanics review, Vol45, No8, pp355-366, 1991] It can be concluded that for continuous fiber-reinforced brittle materials, the interface of fiber/abrasive matrix layer is not stronger and stronger Good; while the relationship between fiber bridging force and crack opening displacement is critical to the effectiveness of fiber reinforcement, this is because the energy enclosed by this force/displacement curve is directly related to the fracture toughness of the composite . In general, for a given fiber bridging force, larger crack opening displacements tend to produce more flexible fiber/abrasive matrix assemblies.

In the case of continuous fiber reinforcement, the cause of fiber failure is usually fiber breakage rather than pullout from the abrasive matrix layer. For a given reinforcing fiber, the maximum crack bridging force is independent of the fiber/abrasive matrix layer interface properties. However, the interface properties do affect the crack opening displacement. To illustrate with a simple example, grab one end of an elastic rope buried in soil (low interfacial strength) or concrete (high interfacial strength) and pull it out forcefully; the rope can be pulled out of the soil before it breaks Many, yet none could be pulled out of the concrete. Expressed in terms of fracture mechanics, the length of the rope pulled out is called the crack opening displacement. Therefore, especially for grinding wheels reinforced with a continuous fiber arrangement, it is not necessary to deliberately adopt a particularly strong interface strength between the glass fiber reinforced mesh and the abrasive matrix layer of the grinding wheel.

Through the above analysis, it can be seen that there is no need to set a particularly strong interface strength between the glass fiber reinforced mesh cloth and the abrasive matrix layer of the grinding wheel. On the contrary, the effect or effect of the weaker interface strength is no less than that of the stronger interface strength; on the glass fiber fabric layer Applying a large amount of resin, that is, a resin content of more than 28%, is a technical prejudice of those skilled in the art, while applying a small amount of resin or even no resin at all results in a lower formation of the glass fiber reinforced mesh and the abrasive matrix layer. A strong interface, or a purely physical contact interface, can still ensure the toughness and other properties of the abrasive tool.

In summary, the present invention provides a fiber-reinforced mesh cloth for a grinding wheel, comprising: a fiber fabric layer; a resin layer is coated on the fiber fabric layer; and the weight of the resin layer is less than that of the fiber-reinforced mesh 15% of the total weight of the cloth; preferably, the weight of the resin layer accounts for more than 1% of the total weight of the fiber reinforced mesh.

Optionally, the weight of the resin layer may account for more than 2%, or more than 3%, or more than 4%, or more than 5%, or more than 6%, or more than 7%, of the total weight of the fiber reinforced mesh, or 8% or more, or 9% or more, or 10% or more, or 11% or more, or 12% or more, or 13% or more; or 13% or less, or 12% or less, or 11% or less, or 10% or less, or Less than 9%, or less than 8%, or less than 7%, or less than 6%, or less than 5%.

Preferably, the weight of the resin material accounts for 5%-14% of the total weight of the fiber reinforced mesh, more preferably 11%-14%.

In a preferred embodiment, the resin layer includes phenolic resin, aniline-formaldehyde resin, melamine resin, epoxy resin or modified epoxy resin, furfural resin, phenol formaldehyde, furan resin, glycerin, polyester or One or any combination of thermosetting resins such as modified polyester and vulcanized rubber.

Preferably, the fiber fabric layer may be glass fiber mesh cloth, or short glass fibers, or nylon filaments.

On the other hand, the present invention also provides a grinding wheel provided with a fiber-reinforced mesh, including an abrasive matrix layer or a grinding layer, characterized in that at least one A fiber-reinforced mesh cloth; the fiber-reinforced mesh cloth includes a fiber fabric layer; a resin layer is coated on the fiber fabric layer; and the weight of the resin layer is less than 15% of the total weight of the fiber-reinforced mesh cloth. Preferably, the weight of the resin layer accounts for more than 1% of the total weight of the fiber reinforced mesh.

Optionally, the weight of the resin layer may account for more than 2%, or more than 3%, or more than 4%, or more than 5%, or more than 6%, or more than 7%, of the total weight of the fiber reinforced mesh, or 8% or more, or 9% or more, or 10% or more, or 11% or more, or 12% or more, or 13% or more; or 13% or less, or 12% or less, or 11% or less, or 10% or less, or Less than 9%, or less than 8%, or less than 7%, or less than 6%, or less than 5%.

Preferably, the weight of the resin material accounts for 5%-14% of the total weight of the fiber reinforced mesh, more preferably 11%-14%.

In a preferred embodiment, when there are more than two fiber-reinforced meshes, the ratio of the weight of the resin layer of each fiber-reinforced mesh to the total weight of the fiber-reinforced mesh may be different.

In another preferred embodiment, when there are more than two fiber-reinforced mesh cloths, the resin layer weight of at least one of them is less than 15% of the total weight of the fiber-reinforced mesh cloths, and the weight of the resin layer of the remaining fiber-reinforced mesh cloths is less than 15%. It can be greater than or equal to 15% of the total weight of the fiber reinforced mesh.

Preferably, the resin layer includes phenolic resin, aniline-formaldehyde resin, melamine resin, epoxy resin or modified epoxy resin, furfural resin, phenol formaldehyde, furan resin, glycerin, polyester or modified polyester, One or any combination of thermosetting resins such as vulcanized rubber.

Preferably, the fiber fabric layer may be glass fiber mesh cloth, or short glass fibers, or nylon filaments.

According to one embodiment, the grinding wheel may comprise a layer of fibre-reinforced mesh disposed inside the abrasive matrix of the grinding wheel.

According to another embodiment, the grinding wheel may include a first fiber-reinforced mesh and a second fiber-reinforced mesh, the first fiber-reinforced mesh and the second fiber-reinforced mesh are respectively arranged on the outer sides of the abrasive matrix of the grinding wheel. On the surface.

According to yet another embodiment, the grinding wheel comprises a first fiber-reinforced mesh, a second fiber-reinforced mesh and a third fiber-reinforced mesh, the first fiber-reinforced mesh completely covers an outer surface of the abrasive matrix of the grinding wheel, A second fiber-reinforced mesh is disposed inside the grinding wheel, while a third fiber-reinforced mesh partially covers the other outer surface of the abrasive matrix of the grinding wheel.

Preferably, the grinding wheel is a thin grinding wheel, especially a cutting disc or an angle grinding disc.

The beneficial effect of the present invention is that, under the premise of keeping the performance of the grinding wheel unchanged, that is, under the premise that both the grinding ratio and the bursting speed meet the industry standard, it has the following advantages.

1. Reduce the raw material cost of fiber reinforced mesh or grinding wheel by reducing the amount of resin used.

2. Make the thickness of the grinding wheel, especially the thin grinding wheel, thinner, or leave more space to add other materials that help improve its performance.

3. Reduce the release of formaldehyde or other toxic and volatile substances to protect the environment and human health.

Description of drawings

Figure 1 is a schematic diagram of the structure of a fiber-reinforced mesh.

FIG. 2 is a schematic cross-sectional view of a grinding wheel according to a first embodiment of the present invention.

3 is a schematic cross-sectional view of a grinding wheel according to a second embodiment of the present invention.

4 is a schematic cross-sectional view of a grinding wheel according to a third embodiment of the present invention.

5 is a schematic cross-sectional view of a grinding wheel according to a fourth embodiment of the present invention.

6 is a schematic cross-sectional view of a grinding wheel according to a fifth embodiment of the present invention.

Figure 7 shows the effect of resin content on bursting speed and grinding ratio.

Detailed ways

As shown in Figure 1, a fiber-reinforced mesh cloth is first coated with a resin layer on the upper and lower surfaces of a layer of fiber fabric by dipping, then heated and cured, and finally cut into a fiber-reinforced mesh cloth. The resin layer is cured by phenolic resin, solvent, surfactant, auxiliary agent and so on. After heating and curing, the weight of the resin layer accounts for the total weight of the fiber-reinforced mesh in a range of greater than or equal to 1% and less than 15%. In order to facilitate large-scale production, the weight percentage of the resin layer in the fiber-reinforced mesh can preferably be 11%, 12% %, 13%, 14%.

An example of the present invention is based on an ultra-thin grinding wheel with a diameter of 105 mm, which is provided with two layers of fiber-reinforced mesh cloth, which are respectively arranged on the outer surfaces of both sides of the abrasive matrix layer of the grinding wheel, and its cross-sectional structure is similar to that shown in Figure 3. The content of the phenolic resin coating on the glass-reinforced mesh is gradually reduced from 33% of the current actual production standard to 1%. Figure 7 shows the burst speed and grinding ratio of the grinding wheel with fiber-reinforced mesh with different resin contents. Numerical values, the test results show that the reduction of the resin content in the fiber-reinforced mesh has little effect on the bursting speed and the grinding ratio; and when the resin content in the fiber-reinforced mesh in the grinding wheel is gradually reduced to 1%, the grinding ratio unchanged, while the burst speed has decreased, but it still meets the requirements of the grinding process.

The following are more examples and grinding wheel performance tests.

Example one:

At first, it is 180 * 3 * 22 (mm) to the cutting sheet that size is tested, and the structure of this cutting sheet is as shown in Figure 3, and cutting sheet comprises one deck grinding layer 10, on this grinding layer 10 upper and lower two Two layers of fiber-reinforced mesh cloths 20-1 and 20-2 are respectively arranged on the surface.

According to the technical conditions of the national standard GB/T2485-2008 of the People's Republic of China, the burst performance of the grinding wheel should be tested according to the rotation test method of the grinding wheel in the national standard GB/T2493-1995 of the People's Republic of China, and meet the relevant requirements.

Therefore, the grinding wheel in this embodiment is tested according to the national standard GB/T2493-1995, that is, it is installed on the rotary testing machine specified in the standard (POGGI rotary machine produced in Italy, model: PV22 maximum speed: 22000rpm). The resin content in the single-piece fiber reinforced mesh cloth 20-1 and 20-2 is respectively set to 1.00%, 3.00%, 5.00%, 7.00%, 9.00%, 11.00%, 13.10% and 15.00%. The rotation test was carried out at 1.5 times of the working speed, and the maximum speed was maintained for 30 seconds. The results showed that all the cutting discs subjected to the test passed the test.

During the test, even if the resin content in a single piece of fiber-reinforced mesh was as low as 1.00%, the cutting piece did not burst and passed the rotation test smoothly. In addition, the inventor also measured the grinding ratio of these cutting discs, and made a comparison with the situation of greater than 15%, and the specific values are shown in Table 1. It can be seen that the resin content in the fiber-reinforced mesh does not affect the grinding ratio of the cut-off piece.

Resin content Rotation experiment Grinding ratio 1.00% pass 0.63 3.00% pass 0.64 5.00% pass 0.66 7.00% pass 0.67 9.00% pass 0.62 11.00% pass 0.64 13.10% pass 0.64 15.00% pass 0.65 17.79% pass 0.65 20.53% pass 0.66 22.01% pass 0.62 25.00% pass 0.63 27.14% pass 0.64 30.82% pass 0.65

Table 1

Example two:

Then, the same size is 180 * 3 * 22 (mm) cutting sheet test, the cutting sheet in the example two is different from the cutting sheet in the example one, the cross-sectional structure of this group of cutting sheets is as shown in Figure 2, The grinding layer of the cutting sheet is divided into a first grinding layer 10-1 and a second grinding layer 10-2, and the cutting sheet includes a sheet between the first grinding layer and the second grinding layer Fiber reinforced mesh 20. The test includes the two aspects of the rotary test and the determination of the grinding ratio. The conditions of the rotary test are the same as in Example 1. The experiment shows that all the cutting discs that have been tested have passed the test, and the resin content in the reinforcing mesh will not affect the grinding of the cutting discs. Compare.

Resin content Rotation experiment Grinding ratio 1.00% pass 1.01 3.00% pass 1.03 5.00% pass 1.04 7.00% pass 1.02 9.00% pass 1.06 11.00% pass 1.06 13.10% pass 1.05 15.00% pass 1.04 17.79% pass 1.03 20.53% pass 1.02 22.01% pass 1.07 25.00% pass 1.04 27.14% pass 1.03 30.82% pass 1.05

Table 2

Example three:

In addition, the inventor also tested an angle grinding disc with a cross-sectional structure as shown in Figure 4. The size of the angle grinding disc is 180×6×22 (mm). The first fiber-reinforced mesh 20-1 on the upper surface of the grinding layer, the second fiber-reinforced mesh 20-2 placed in the grinding layer, and the third fiber-reinforced mesh 20-2 partially covering the lower surface of the grinding layer 3. The test includes two aspects of the rotary test and the determination of the grinding ratio. The condition of the rotary test is the same as that of Example 1. As shown in Table 3 below, the test shows that all angle grinding discs have passed the test, and the resin content in the fiber reinforced mesh cloth is not high. It will affect the grinding ratio of the angle grinding disc.

Resin content Rotation experiment Grinding ratio 1.00% pass 11.9 3.00% pass 12.5 5.00% pass 12.3 7.00% pass 12.4 9.00% pass 12.4 11.00% pass 12.8 13.10% pass 11.9 15.00% pass 11.8 17.79% pass 12.3 20.53% pass 12.2 22.01% pass 12.4 25.00% pass 12.6 27.14% pass 12.2 30.82% pass 12.8

table 3

Based on the above three examples, it can be concluded that when the resin content in the fiber-reinforced mesh drops below 15%, which is traditionally considered undesirable, its burst speed and cutting rate will not be significantly affected. That is to say, the resin content in the fiber-reinforced mesh can be set below 15% and above 1%, however, in combination with cost and processability, preferably, the resin content in the fiber-reinforced mesh can be set at 5% Between 11% and 14%, more preferably between 11% and 14%.

In addition, fiber reinforced scrims with reduced resin content below 15% can be incorporated into the grinding wheel matrix layer in a variety of ways. In addition to the combination of the three different fiber reinforced meshes shown in the above examples 1 to 3, the following structures are also possible.

As shown in Figure 5, the grinding wheel 5 may comprise two complete layers of fiber reinforced mesh 20-1 and 20-2, wherein the first layer of fiber reinforced mesh 20-1 is disposed on one of the two outer surfaces of the grinding wheel base , the second layer of fiber-reinforced mesh cloth 20-2 is arranged at approximately the middle position along the axial direction inside the grinding wheel base.

It can also be shown in Figure 6 that the grinding wheel 6 includes two complete layers of fiber-reinforced mesh cloths 20-1 and 20-2, and these two layers of fiber-reinforced mesh cloths 20-1 and 20-2 are all arranged on the matrix of the grinding wheel made of abrasive materials. Inside, the abrasive matrix layer is divided into three layers.

For the grinding wheel that is provided with multi-layer fiber-reinforced mesh as shown in Figures 4, 5 and 6, wherein each fiber-reinforced mesh has a prefabricated resin content that is less than 15% of the total weight of the mesh, each fiber-reinforced mesh The resin contents of the cloths were all the same.

The present invention expresses the overall inventive concept through some specific implementations. However, the above-mentioned related descriptions or methods in the examples are not the only choices, and those skilled in the art can make various changes or combinations from the contents of the description. For example, in a grinding wheel with more than two fiber-reinforced meshes, the resin content of the fiber-reinforced meshes can be different, the resin content of one fiber-reinforced mesh can be 14%, and the other is 10%. Or the resin content of one fiber-reinforced mesh is within the protection scope of the claims, while the other can choose a fiber-reinforced mesh with a resin content greater than 15% or a traditional fiber-reinforced mesh greater than 28%.

Therefore, after reading the above content of the present invention, those skilled in the art can make various changes or combinations to the present invention, and these equivalent changes also fall within the scope defined by the appended claims of the present application.

In addition, the present invention is particularly suitable for thin grinding wheels, and the outer diameter of thin grinding wheels of common specifications is from 50mm to 400mm, and the thickness is from 0.8mm to 5mm. Typically these thin profile grinding wheels are adapted to engage a workpiece at a tangential contact velocity of 72m/s to 120m/s, and these thin profile resin grinding wheels may include cut-off and angle grinding discs.

In addition, the fiber-reinforced mesh according to the present invention can be combined with various abrasive matrix materials to form a grinding wheel. For example, a combination of garnet and corundum can be used as the abrasive, wherein the volume of garnet can account for 5% to 70% of the volume of the abrasive.

Although the above drawings and descriptions have described several specific embodiments of the present invention, the above description is only to clearly describe the preferred embodiment of the present invention, and does not play any role in limiting the protection scope of the present invention. The protection scope of the present invention The scope will be defined by the claims appended hereto.

Claims (16)

1. A fiber-reinforced mesh cloth for abrasive tools, characterized in that it comprises: fabric layer; A resin layer is coated on the fiber fabric layer; and The weight of the resin layer is less than 15% of the total weight of the fiber reinforced mesh. 2. The fiber-reinforced mesh according to claim 1, wherein the weight of the resin layer accounts for more than 1% of the total weight of the fiber-reinforced mesh. 3. The fiber-reinforced mesh according to claim 1, wherein the weight of the resin material accounts for 5%-14% of the total weight of the fiber-reinforced mesh, preferably 11%-14%. 4. The fiber-reinforced mesh cloth according to any one of claims 1 to 3, wherein the resin layer comprises phenolic resin, aniline-formaldehyde resin, melamine resin, epoxy resin or modified epoxy resin, furfural resin , One or any combination of thermosetting resins such as phenol formaldehyde, furan resin, glycalin, polyester or modified polyester, vulcanized rubber. 5. The fiber-reinforced mesh cloth according to any one of claims 1 to 3, characterized in that, the fiber fabric layer material is glass fiber mesh cloth, or short glass fibers, or nylon filaments, or any combination of the above. 6. An abrasive tool provided with a fiber-reinforced mesh, comprising an abrasive matrix layer, characterized in that: At least one fiber-reinforced mesh cloth is arranged inside or on the surface of the abrasive matrix layer; The fiber reinforced mesh comprises a fiber fabric layer; A resin layer is coated on the fiber fabric layer; and The weight of the resin layer is less than 15% of the total weight of the fiber reinforced mesh. 7. The abrasive tool according to claim 6, wherein the weight of the resin layer accounts for more than 1% of the total weight of the fiber-reinforced mesh. 8. The abrasive tool according to claim 6, wherein the weight of the resin material accounts for 5%-14% of the total weight of the fiber reinforced mesh, preferably 11%-14%. 9. Abrasive tool as claimed in claim 6, characterized in that, when more than two fiber-reinforced mesh cloths are provided, the ratio of the weight of the resin layer of each fiber-reinforced mesh cloth to the total weight of its fiber-reinforced mesh cloth is different from each other. same. 10. Abrasive tool as claimed in claim 6, characterized in that, when more than two fiber-reinforced mesh cloths are provided, the resin layer weight of at least one of them is less than 15% of the total weight of the fiber-reinforced mesh cloths, and the remaining fiber The weight of the resin layer of the reinforced mesh is more than 15% of the total weight of the fiber reinforced mesh. 11. The abrasive tool according to any one of claims 6 to 10, wherein the resin layer comprises phenolic resin, aniline-formaldehyde resin, melamine resin, epoxy resin or modified epoxy resin, furfural resin, phenol One or any combination of formaldehyde, furan resin, glycinate resin, polyester or modified polyester, vulcanized rubber and other thermosetting resins. 12. The abrasive tool according to any one of claims 6 to 10, characterized in that, the fiber fabric layer material is glass fiber mesh cloth, or glass short fibers, or nylon filaments, or any combination of the above. 13. The abrasive tool according to claim 6, wherein the fiber-reinforced mesh is disposed entirely inside the abrasive matrix layer of the abrasive tool, but not on the outer surface of the abrasive matrix layer. 14. The abrasive article of claim 6, wherein the abrasive article comprises a first fiber-reinforced mesh and a second fiber-reinforced mesh, the first fiber-reinforced mesh and the second fiber-reinforced mesh The mesh cloths are respectively arranged on the outer surfaces of the opposite sides of the abrasive matrix layer of the abrasive tool. 15. The abrasive tool of claim 6, wherein the abrasive tool comprises a first fiber-reinforced mesh, a second fiber-reinforced mesh, and a third fiber-reinforced mesh, the first fiber-reinforced mesh Covering an outer surface of the abrasive matrix layer of the abrasive tool, the second fiber reinforced mesh cloth is arranged inside the abrasive tool, and the third fiber reinforced mesh layout is partially covered on the abrasive material of the abrasive tool The other outer surface of the base layer. 16. The abrasive article of claim 6, wherein the abrasive article is a thin grinding wheel.

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