Ceramic agglomerated abrasive particle, ceramic agglomerated abrasive product and preparation method
By preparing ceramic agglomerated abrasive particles and products with consistent shape and particle size, the problems of consistency and stability of traditional grinding wheels in grinding heavy workpieces have been solved, achieving efficient and low-energy grinding results.
Patent Information
- Application Number
- CN202511260141.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2025-12-23
AI Technical Summary
Traditional grinding wheels suffer from problems such as uneven distribution of large abrasive particles, weak bonding agent, severe abrasive shedding, and high grinding energy consumption, making it difficult to meet the large allowance grinding requirements of heavy workpieces.
By using ceramic agglomerated abrasive particles and controlling the mixing ratio of CBN/GC abrasives and the use of binders, combined with specific preparation processes including stirring, injection molding, and sintering, ceramic agglomerated abrasive particles with consistent shape and particle size are prepared. By adding resin and graphite balls, ceramic agglomerated abrasive products with good self-sharpening and lubrication properties are formed.
It achieves stable and efficient cutting of ceramic agglomerated abrasive products, improves grinding efficiency and service life, reduces grinding energy consumption, and ensures stability and continuous operation under extreme working conditions.
Smart Images
Figure CN121179360A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of abrasive, in particular to a ceramic agglomerated abrasive particle, a ceramic agglomerated abrasive article and a preparation method. BACKGROUND
[0002] The grinding wheel is also called a bonded abrasive tool. The grinding wheel is a bonded abrasive tool formed by a binder and ordinary abrasive. It has a certain shape (mostly circular, with a through hole in the center) and a certain strength. The grinding wheel is the most important type of abrasive tool in grinding. With the gradual improvement of industrial manufacturing level, the demand for large excess grinding of heavy workpieces such as steel rollers and large castings is increasing, and higher requirements are put forward for the cutting efficiency, chip removal capacity and service life of the grinding wheel. However, the traditional grinding wheel has the following technical bottlenecks: the inherent defects of the existing large particle grinding wheel are as follows: 1. The particle size distribution of natural large particle abrasive is uneven, resulting in fluctuation of grinding force and surface vibration of workpiece; 2. The binder is not wrapped tightly, and the abrasive falls off seriously under high speed and heavy load; 3. After the abrasive is passivated, there is no self-sharpening mechanism, and the grinding energy consumption increases sharply. SUMMARY
[0003] Therefore, the present application provides a ceramic agglomerated abrasive particle, a ceramic agglomerated abrasive article and a preparation method, which control the consistency of abrasive particles, maintain the stability of the ceramic agglomerated abrasive article, and realize large excess efficient cutting of the ceramic agglomerated abrasive article.
[0004] To achieve the above-mentioned purpose, the present application provides a ceramic agglomerated abrasive particle, which comprises the following raw materials by weight: CBN abrasive 27±3 parts, GC abrasive 30±5 parts, ceramic binder 20±5 parts, organic water retaining agent 5±1 part, and dispersant 18±2 parts.
[0005] Optionally, the dispersant is a viscosity dispersant and a hydrophobic dispersant, the viscosity dispersant is 16±1 parts, and the hydrophobic dispersant is 2±1 parts.
[0006] Optionally, the viscosity dispersant includes one or more than two combinations of fatty alcohol polyoxyethylene ether, maleic acid-acrylic acid copolymer and polyurethane micro-particles.
[0007] Optionally, the hydrophobic dispersant includes one or more than two combinations of soybean lecithin, oleamide and acrylic acid polymer.
[0008] Optionally, the organic water retaining agent includes one or more than two combinations of carboxymethyl cellulose, starch-acrylic acid copolymer and sodium polyacrylate.
[0009] To achieve the above-mentioned purpose, the present application further provides a preparation method of the ceramic agglomerated abrasive particle, which is characterized by comprising the following steps: S1, the CBN abrasive, GC abrasive, ceramic binder, organic water-retaining agent is mixed uniformly, then is stirred uniformly with dispersing agent in mixing cylinder;Then the material is transferred to the mixing stirrer to carry out clockwise direction- counterclockwise direction- clockwise direction stirring in turn, and semi-dry material is obtained; S2, the semi-dry material is poured into an injection molding machine, and a strip-shaped material is injected;After the strip-shaped material is dried and crushed, the ceramic agglomerated material green body is screened out by using a screen;The ceramic agglomerated material green body is sintered and cooled to obtain ceramic agglomerated abrasive particles.
[0010] Optionally, the clockwise direction-counterclockwise direction-clockwise direction stirring is that the E-shaped stirring head is used to stir clockwise in the mixing stirrer for 300-400 turns, then the E-shaped stirring head is used to stir counterclockwise for 30-40 turns, and finally the E-shaped stirring head is used to stir clockwise for 4-8 min;Before each time the direction is changed, the material is kneaded into a ball, and then stirring is carried out.
[0011] Optionally, the diameter of the E-shaped stirring head for clockwise stirring is 2.5-3.5 mm;The diameter of the E-shaped stirring head for counterclockwise stirring is 1-2 mm.
[0012] Optionally, the sintering includes heating the ceramic agglomerated material green body from room temperature to 600 DEG C at a rate of 1-3 DEG C / min, maintaining a pressure of 5-10 MPa, and keeping the temperature for 30-60 min to carry out degreasing and sufficient exhaust, then heating to 1100 DEG C at a rate of 5-10 DEG C / min, linearly increasing the pressure to 30±5 MPa to make the powder preliminarily dense, then heating to 1250-1350 DEG C at a rate of 1-3 DEG C / min to realize densification by particle rearrangement, and keeping the temperature for 20-60 min to reach the final density.
[0013] In order to achieve the above purpose, the application further provides a ceramic agglomerated abrasive product, which comprises the following raw materials in percentage by weight: the ceramic agglomerated abrasive particles according to any one of claims 1-2 56.5-68.5%, resin liquid 7.5-9.5%, resin powder 11-13%, graphite ball 10-12%, and gypsum powder 5-7%.
[0014] In order to achieve the above purpose, the application further provides a preparation method of a ceramic agglomerated abrasive product, which comprises the following steps: (1) soaking the ceramic agglomerated abrasive particles into the resin liquid, stirring sufficiently, adding the resin powder and continuing to stir, to obtain semi-dry material; (2) adding gypsum powder to the semi-dry material and stirring, then adding graphite ball and stirring, to obtain mixed material; (3) forming green body by the mixed material under positive pressure and reverse pressure, drying, sintering, and finishing to obtain a grinding wheel.
[0015] Optionally, the particle size of the ceramic agglomerated abrasive particles is 1.5-2 mm; the stirring time of the gypsum powder is 30-50 min, and the stirring time of the graphite ball is 25-45 min.
[0016] Optionally, the sintering after drying is to bury the formed green body in sand and naturally dry for 3-5 h, and then sinter with the sand into the furnace.
[0017] The above technical solutions of the present application at least include the following beneficial effects: 1. The shape and particle size of the ceramic agglomerated abrasive particles can be controlled during preparation, ensuring that the obtained ceramic agglomerated abrasive particles have the same or similar shape and particle size, ensuring the consistency of the ceramic agglomerated abrasive particles, and the CBN / GC mixed abrasive material provides a high-hardness cutting edge as the core layer, and the ceramic binder wraps the core layer to form a shell layer after sintering, enhancing wear resistance.
[0018] 2. In the ceramic agglomerated abrasive product, the ceramic agglomerated abrasive particles and the resin component form a resin elastic network, penetrate the ceramic gap, impart self-sharpening, absorb impact load, avoid particle fragmentation, ensure stability in extreme working conditions, and naturally form 300-500 μm pores between the ceramic agglomerated abrasive particles, with a porosity of 35-45%, improved cooling and chip removal capacity, ensuring continuous operation capacity, and a lubricating film is formed on the inner wall of the pores by the graphite ball, reducing chip adhesion and reducing grinding energy consumption. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 The structure diagram of the grinding wheel prepared in the embodiment of the present application, the microstructure diagram of the local part of the grinding wheel, and the microstructure diagram of the part of the ceramic agglomerated abrasive particles.
[0020] In the figure: A refers to the side structure diagram of the grinding wheel; B refers to the front structure diagram of the grinding wheel; C refers to the microstructure diagram of the local part of the grinding wheel; C1 refers to the part of the ceramic agglomerated abrasive particles; C2 refers to the part of the resin and filler; D refers to the microstructure diagram of the part of the ceramic agglomerated abrasive particles; D1 refers to the pore; D2 refers to the ceramic agglomerated abrasive particle; and D3 refers to the ceramic binder. DETAILED DESCRIPTION
[0021] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the drawings of the embodiments of the present application to make a better understanding of the present application. Figure 1 The technical solutions of the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.
[0022] The kind and model of the raw materials in the embodiment of the present application can be selected by those skilled in the art according to the needs, in order to more clearly illustrate, the following raw material kinds are provided: the viscosity dispersant includes one or more than two combinations of fatty alcohol polyoxyethylene ether, maleic acid-acrylic acid copolymer, polyurethane micro-particle; the hydrophobic dispersant includes one or more than two combinations of soybean lecithin, oleamide, acrylic acid polymer; the organic water-retaining agent includes one or more than two combinations of carboxymethyl cellulose, starch-acrylic acid copolymer, sodium polyacrylate Example 1 The present application provides a kind of ceramic agglomerated abrasive particles, including the following weight parts of raw materials: CBN abrasive 27 parts, GC abrasive 30 parts, ceramic binder 20 parts, organic water-retaining agent 5 parts, viscosity dispersant 16 parts, hydrophobic dispersant 2 parts.
[0023] The preparation method of the ceramic agglomerated abrasive particles includes the following steps: Mixing: the weighed CBN abrasive, GC abrasive, ceramic binder and organic water-retaining agent are uniformly mixed, then mixed with dispersant in mixing cylinder for 5 minutes to 5 minutes to stirring uniformity; the uniformly stirred material is transferred to the mixing blender, first clockwise stirring 350 turns with 3mm E-shaped stirring head, then counterclockwise stirring 35 turns with 1.5mm E-shaped stirring head, finally clockwise stirring 6min with 3mm E-shaped stirring head; before each direction conversion, the material is kneaded into a ball, then stirring, to get semi-dry material.
[0024] Physical granulation: pour the semi-dry material into an injection molding machine, set the injection pressure to 28 MPa and install the required injection tube according to the required particle size, and inject the material into a strip; after drying the strip, crush it, and use a sieve with a mesh size one size larger than the required particle size to screen the ceramic agglomerated abrasive green body; after sintering and cooling, the ceramic agglomerated abrasive particles are obtained; the sintering includes heating the ceramic agglomerated abrasive green body from room temperature to 600℃ at a rate of 2℃ / min, maintaining a pressure of 8 MPa, and maintaining the temperature for 50 min to perform debinding and sufficient degassing, to safely remove the organic matter, wherein the slow heating can cause the water retention agent and the dispersant to slowly decompose and vaporize, avoiding cracking and blistering of the green body, and a vacuum or inert gas protection is required, and the temperature is maintained to ensure sufficient degassing and complete removal of the organic matter decomposition products, and the system temperature is uniform; then heat to 1100℃ at a rate of 8℃ / min, and linearly increase the pressure to 30±5 MPa, at which point the organic matter has been exhausted, so the heating rate is increased, and the pressure and temperature are increased simultaneously to make the powder initially dense; then heat to 1300℃ at a rate of 2℃ / min, which is the sintering core stage, close to the eutectic temperature, and the liquid phase is generated, the slow heating causes the liquid phase to be uniformly distributed, effectively wetting the CBN particles, and densification is achieved through particle rearrangement; maintain the temperature for 40 min, which is the final sintering stage, further eliminating pores through the dissolution-precipitation mechanism to achieve the final density; and cool in the furnace to release thermal stress, avoid cracking of the product, and allow the binder phase to fully crystallize, and after cooling, screen out ceramic agglomerated abrasive particles of 1.5~2mm.
[0025] Example 2 The present application provides a kind of ceramic agglomerated abrasive particles, including the following weight parts of raw materials: CBN abrasive 24 parts, GC abrasive 25 parts, ceramic binder 25 parts, organic water-retaining agent 6 parts, viscosity dispersant 17 parts, hydrophobic dispersant 3 parts.
[0026] The preparation method of the ceramic agglomerated abrasive particles includes the following steps: Mixing: mix the above weighed CBN abrasive, GC abrasive, ceramic binder and organic water-retaining agent uniformly, then mix with the dispersant in a mixing cylinder for 5 minutes to 10 minutes to stir uniformly; transfer the uniformly stirred material to a mixing blender, first stir clockwise for 300 turns with a 3.5mm E-shaped stirring head, then stir counterclockwise for 40 turns with a 1mm E-shaped stirring head, and finally stir clockwise for 4 minutes with a 3.5mm E-shaped stirring head; before each time the direction is changed, the material is kneaded into a ball, and then stirred, to obtain a semi-dry material.
[0027] Physical granulation: pour the semi-dry material into an injection molding machine, set the injection pressure to 30 MPa and install the required injection tube according to the required particle size, and inject the material into a strip; after drying the strip, crush it, and use a screen with a mesh size one size larger than the required particle size to screen the ceramic agglomerated abrasive green body; after sintering and cooling, the ceramic agglomerated abrasive particles are obtained; the sintering includes heating the ceramic agglomerated abrasive green body from room temperature to 600℃ at a rate of 3℃ / min, maintaining a pressure of 5 MPa, and maintaining the temperature for 60 min to perform debinding and sufficient degassing, realize safe removal of organic matter, wherein slow heating can make the water retention agent and dispersant decompose and vaporize slowly, avoid cracking and blistering of the green body, and open the vacuum or inert gas protection, and the maintaining temperature can ensure sufficient degassing and complete removal of organic matter decomposition products, and make the system temperature uniform; then heat to 1100℃ at a rate of 5℃ / min, linearly increase the pressure to 25 MPa, at this time the organic matter has been exhausted, so the heating rate is increased, and the pressure and temperature are increased synchronously to make the powder preliminarily dense; then heat to 1350℃ at a rate of 3℃ / min, at this time it is the sintering core stage, close to the eutectic temperature, liquid phase is generated, slow heating makes the liquid phase uniformly distributed, effectively wets the CBN particles, and densification is realized through particle rearrangement; maintain the temperature for 20 min, at this time it is the final sintering stage, further eliminate pores through the dissolution-precipitation mechanism, and reach the final density; cooling is furnace cooling, slow cooling is used to release thermal stress, avoid cracking of the product, and make the binder phase fully crystallize, and after cooling, the ceramic agglomerated abrasive particles of the required particle size are screened out.
[0028] Example 3 The present application provides a kind of ceramic agglomerated abrasive particles, including the following weight parts of raw materials: CBN abrasive 30 parts, GC abrasive 35 parts, ceramic binder 15 parts, organic water-retaining agent 4 parts, viscosity dispersant 15 parts, hydrophobic dispersant 1 part.
[0029] The preparation method of the ceramic agglomerated abrasive particles includes the following steps: Mixing: mix the weighed CBN abrasive, GC abrasive, ceramic binder and organic water-retaining agent uniformly, then mix with the dispersant in the mixing cylinder for 5 minutes to 8 minutes to stir uniformly; transfer the uniformly stirred material to a mixing stirrer, first stir clockwise for 400 turns using a 2.5 mm E-shaped stirring head, then stir counterclockwise for 30 turns using a 2 mm E-shaped stirring head, and finally stir clockwise for 8 minutes using a 2.5 mm E-shaped stirring head; before each time the direction is changed, the material is kneaded into a ball, and then stirred, to obtain a semi-dry material.
[0030] Physical granulation: pour the semi-dry material into an injection molding machine, set the injection pressure to 29 MPa and install the required injection tube according to the required particle size, and inject the material into a strip; after drying the strip, crush it, and use a sieve with a mesh size one larger than the required particle size to screen the ceramic agglomerated abrasive green body; after sintering and cooling, the ceramic agglomerated abrasive particles are obtained; the sintering includes heating the ceramic agglomerated abrasive green body from room temperature to 600 DEG C at a rate of 1 DEG C / min, maintaining a pressure of 10 MPa, and maintaining the temperature for 30 min to perform debinding and sufficient degassing, realize safe removal of organic matter, wherein slow heating can make the water retention agent and the dispersing agent decompose and vaporize slowly, avoid cracking and blistering of the body, and the vacuum or inert gas protection needs to be opened, the temperature can ensure sufficient degassing and complete removal of the organic matter decomposition products, and the system temperature is uniform; then heat to 1100 DEG C at a rate of 10 DEG C / min, linearly increase the pressure to 35 MPa, at this time the organic matter has been exhausted, so the heating rate is increased, and the pressure and temperature are increased synchronously to make the powder preliminarily dense; then heat to 1250 DEG C at a rate of 1 DEG C / min, at this time it is the sintering core stage, close to the eutectic temperature, and a liquid phase is generated, slow heating makes the liquid phase uniformly distributed, effectively wets the CBN particles, and densification is realized through particle rearrangement; maintain the temperature for 60 min, at this time it is the final sintering stage, further eliminate pores through the dissolution-precipitation mechanism, and achieve the final density; cooling is furnace cooling, slow cooling is used to release thermal stress, avoid cracking of the product, and make the binder phase fully crystallize, and after cooling, the ceramic agglomerated abrasive particles with a size of 1.5-2 mm are screened out.
[0031] Example 4 The application provides a ceramic agglomerated abrasive product, which comprises the following raw materials in percentage by weight: ceramic agglomerated abrasive particles 62.5%, resin liquid 8.5%, resin powder 12%, graphite ball 11%, and gypsum powder 6%.
[0032] The preparation method of the ceramic agglomerated abrasive product comprises the following steps: The raw materials in the above percentage by weight are weighed and prepared for use, the ceramic agglomerated abrasive particles are soaked in the resin liquid and fully stirred, the particle size of the ceramic agglomerated abrasive particles is 1.5 mm, the resin powder is added and continuously stirred, the gypsum powder is added and stirred for 30 min at a stirring rate of 60 rpm, the graphite ball is added and stirred for 25 min at a stirring rate of 45 rpm, and a mixture is obtained; the mixture is subjected to positive pressure and reverse pressure to obtain a formed green body, the green body is buried in sand and naturally dried for 4 h, and then the sand is put into a furnace for sintering; after sintering, a diamond grinding wheel is processed according to the required shape and size of the grinding wheel, and the grinding wheel is obtained.
[0033] Example 5 The application provides a ceramic agglomerated abrasive product, which comprises the following raw materials in percentage by weight: ceramic agglomerated abrasive particles 62.5%, resin liquid 8.5%, resin powder 12%, graphite ball 11%, and gypsum powder 6%.
[0034] The method for preparing the ceramic agglomerated abrasive product comprises the following steps: The raw materials in the above weight percentages are weighed and prepared for use. The ceramic agglomerated abrasive particles are immersed in the resin liquid and stirred thoroughly. The particle size of the ceramic agglomerated abrasive particles is 2 mm. The resin powder is added and the stirring is continued. The semi-dry material is obtained. The gypsum powder is added and stirred for 40 min at a stirring rate of 50 rpm. The graphite balls are added and stirred for 35 min at a stirring rate of 60 rpm. The mixed material is obtained. The mixed material is subjected to positive pressure and reverse pressure to obtain a shaped green body. The green body is buried in sand and naturally dried for 3 h. The sand is then put into a furnace for sintering. After sintering, a diamond grinding wheel is used to process and shape the grinding wheel according to the required shape and size of the grinding wheel.
[0035] Example 6 The present application provides a ceramic agglomerated abrasive product, which comprises the following raw materials in the following weight percentages: ceramic agglomerated abrasive particles 66.5%, resin liquid 7.5%, resin powder 11%, graphite balls 10%, and gypsum powder 5%.
[0036] The method for preparing the ceramic agglomerated abrasive product comprises the following steps: The raw materials in the above weight percentages are weighed and prepared for use. The ceramic agglomerated abrasive particles are immersed in the resin liquid and stirred thoroughly. The particle size of the ceramic agglomerated abrasive particles is 1.8 mm. The resin powder is added and the stirring is continued. The semi-dry material is obtained. The gypsum powder is added and stirred for 50 min at a stirring rate of 30 rpm. The graphite balls are added and stirred for 45 min at a stirring rate of 25 rpm. The mixed material is obtained. The mixed material is subjected to positive pressure and reverse pressure to obtain a shaped green body. The green body is buried in sand and naturally dried for 5 h. The sand is then put into a furnace for sintering. After sintering, a diamond grinding wheel is used to process and shape the grinding wheel according to the required shape and size of the grinding wheel.
[0037] Comparative Example 1 Compared with Example 1, the only difference is that the material transfer to the mixing stirrer is always clockwise stirring. The remaining steps and operations are consistent with Example 1.
[0038] Comparative Example 2 Compared with Example 1, the only difference is that the traditional granulation method is used during granulation, i.e., the semi-dry material is mixed with a plasticizer instead of being injected into a strip-shaped material. The remaining steps and operations are consistent with Example 1.
[0039] Comparative Example 3 Compared with Example 4, the only difference is that the resin liquid is used entirely, and the resin powder is not used. The remaining steps and operations are consistent with Example 4.
[0040] Comparative Example 4 The difference compared with example 4 is that the stirring time of the gypsum powder is 60 min and the stirring time of the graphite ball is 50 min. The remaining steps and operations are consistent with example 4.
[0041] The abrasive particles prepared in examples 1~2 and comparative examples 1~2 are subjected to performance testing, and table 1 is obtained.
[0042] Table 1 Performance table of abrasive particles prepared in examples 1~2 and comparative examples 1~2
[0043] Note: TI is a fixed impact number method, which impacts the test material for a certain number of times, and then sieves, and the size of the percentage of the oversize (unbroken material) indicates the impact toughness, and the value is TI value, and the higher the TI value, the stronger the consistency of the abrasive particles.
[0044] As shown in table 1, the hardness and impact toughness of the abrasive particles prepared in the examples of the present application are obviously better than those of the comparative examples.
[0045] The grinding wheels prepared in examples 3~4 and comparative examples 3~4 are subjected to performance testing, and table 2 is obtained.
[0046] Table 2 Performance table of grinding wheels prepared in examples 3~4 and comparative examples 3~4
[0047] Note: The hardness of the grinding wheel is divided into A~G, H, J, K, L, M, N, P, Q, R, S, T and Y, etc. The hardness of A is the lowest, and the hardness of Y is the highest.
[0048] As shown in table 2, the hardness, wear resistance and pore of the grinding wheel prepared in the examples of the present application are obviously better than those of the comparative examples.
[0049] The grinding wheel structure diagram, the microstructure diagram of the local grinding wheel and the microstructure diagram of the ceramic agglomerated abrasive particles prepared in the examples of the present application are shown in Figure 1 .
[0050] The above is the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the present application.
Claims
1. A ceramic agglomerated abrasive particle, characterized in that, The raw materials include the following parts by weight: 27±3 parts CBN abrasive, 30±5 parts GC abrasive, 20±5 parts ceramic binder, 5±1 parts organic water-retaining agent, and 18±2 parts dispersant.
2. The ceramic agglomerated abrasive particles according to claim 1, characterized in that, The dispersant is a viscosity dispersant and a hydrophobic dispersant, wherein the viscosity dispersant is 16±1 parts and the hydrophobic dispersant is 2±1 parts.
3. A method for preparing ceramic agglomerated abrasive particles as described in any one of claims 1 to 2, characterized in that, Includes the following steps: S1. Mix CBN abrasive, GC abrasive, ceramic binder, and organic water-retaining agent evenly, and then stir them evenly with the dispersant in a mixing tank; then transfer the material to a mixing mixer and stir in a clockwise-counterclockwise-clockwise direction in sequence to obtain a semi-dry material; S2. Pour the semi-dry material into an injection molding machine and inject it into strips; dry the strips and crush them, then use a sieve to separate the ceramic agglomerate green body; after sintering and cooling, the ceramic agglomerate green body is used to obtain ceramic agglomerate abrasive particles.
4. The method for preparing ceramic agglomerated abrasive particles according to claim 3, characterized in that, The clockwise-counterclockwise-clockwise mixing process involves first using an E-shaped mixing head to mix clockwise for 300-400 revolutions in the mixer, then using an E-shaped mixing head to mix counterclockwise for 30-40 revolutions, and finally using an E-shaped mixing head to mix clockwise for 4-8 minutes. Before each direction change, the material is shaped and kneaded into a ball before mixing.
5. The method for preparing ceramic agglomerated abrasive particles according to claim 4, characterized in that, The diameter of the E-shaped stirring head for clockwise stirring is 2.5~3.5mm; the diameter of the E-shaped stirring head for counterclockwise stirring is 1~2mm.
6. The method for preparing ceramic agglomerated abrasive particles according to claim 3, characterized in that, The sintering process involves heating the ceramic agglomerate green material from room temperature to 600°C at a rate of 1-3°C / min, maintaining a pressure of 5-10 MPa, and holding the temperature for 30-60 min to degrease and fully degas the material. Then, the temperature is increased to 1100°C at a rate of 5-10°C / min, and the pressure is linearly increased to 30±5 MPa to initially compact the powder. Finally, the temperature is increased to 1250-1350°C at a rate of 1-3°C / min to achieve densification through particle rearrangement, and the temperature is held for 20-60 min to reach the final density.
7. A ceramic agglomerated abrasive product, characterized in that, The raw materials include the following weight percentages: 56.5-68.5% ceramic agglomerated abrasive particles as described in any one of claims 1-2, 7.5-9.5% resin liquid, 11-13% resin powder, 10-12% graphite balls, and 5-7% gypsum powder.
8. A method for preparing a ceramic agglomerated abrasive product as described in claim 7, characterized in that, Includes the following steps: (1) Immerse the ceramic agglomerated abrasive particles in the resin liquid, stir thoroughly, add resin powder and continue stirring to obtain semi-dry material; (2) Add gypsum powder to the semi-dry material and stir, then add graphite balls and stir to obtain a mixture; (3) The mixture is subjected to positive and negative pressure to obtain a green blank, which is dried, sintered, and then shaped to obtain a grinding wheel.
9. A method for preparing a ceramic agglomerated abrasive product as described in claim 7, characterized in that, The ceramic agglomerated abrasive particles have a particle size of 1.5~2mm; the gypsum powder is stirred for 30~50min, and the graphite balls are stirred for 25~45min.
10. A method for preparing a ceramic agglomerated abrasive product as described in claim 7, characterized in that, The drying and sintering process involves burying the formed green body in sand and letting it dry naturally for 3-5 hours, then sintering it in a furnace along with the sand.