Special resin grinding wheel for grinding end face of compressor valve plate and preparation method of special resin grinding wheel

Abstract

The invention relates to the field of compressor valve plates, in particular to a compressor valve plate end face grinding special resin grinding wheel and a preparation method thereof.The compressor valve plate end face grinding special resin grinding wheel comprises, by weight, 100 parts of grinding materials, 4-6 parts of phenolic resin liquid, 10-15 parts of phenolic resin powder, 1-2 parts of polyvinyl butyral resin, 2-3 parts of gypsum powder, 1-2 parts of potassium fluoborate and 1-2 parts of zinc sulfide. Wherein the grinding material is a large-particle corundum micro-powder agglomerated grinding material prepared by utilizing a ceramic bonding agent. The large-particle corundum micro-powder aggregate prepared by the ceramic bond is used as the abrasive material, the abrasive material has a porous structure, high bonding strength and good self-sharpening performance, the resin grinding wheel prepared by the abrasive material has the advantages of loose structure, high mechanical strength, good retentivity and the like, and the abrasive material has the good self-sharpening performance on the premise that the roughness is guaranteed. The grinding efficiency is high, the heat dissipation performance is good, the single-time feed amount is large, finishing is not needed, the grinding procedures can be reduced, and the workpiece surface precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of compressor valve plates, and in particular to a special resin grinding wheel for grinding the end surface of a compressor valve plate and a preparation method thereof. Background Art

[0002] Compressors are very important in industry and life. They can be divided into many types according to the medium and principle. They are widely used in machinery manufacturing, petrochemical industry, mining and metallurgy, textile and clothing, medical industry, food industry, cement industry, sewage treatment, power industry and other fields. The compressor valve is a very important part of the compressor. Its quality and accuracy directly affect the life and use effect of the compressor. Therefore, the processing technology of the compressor valve is also particularly important.

[0003] Compressor valve plates are generally processed by end grinding with large-diameter resin grinding wheels. The processing of compressor valve plates with ordinary resin grinding wheels cannot achieve both high processing efficiency and high processing accuracy, and cannot meet the needs of the rapid development of my country's compressor industry. Summary of the invention

[0004] The purpose of the present invention is to provide a special resin grinding wheel for grinding the end surface of a compressor valve plate and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology and prepare a special resin grinding wheel for grinding the end surface of a compressor valve plate which can improve the grinding efficiency while meeting higher processing accuracy.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a special resin grinding wheel for grinding the end surface of a compressor valve plate, comprising the following components by weight: 100 parts of abrasive, 4 to 6 parts of phenolic resin liquid, 10 to 15 parts of phenolic resin powder, 1 to 2 parts of polyvinyl butyral resin, 2 to 3 parts of gypsum powder, 1 to 2 parts of potassium fluoroborate, and 1 to 2 parts of zinc sulfide.

[0006] Preferably, the abrasive is a large-particle corundum micro-powder agglomerate prepared by using a ceramic binder. The formula of the large-particle corundum micro-powder agglomerate prepared by using a ceramic binder is as follows: Material wt% weight percentage Abrasive 83 Binder 12 Wetting agent 2 Curing agent 3 Total 100 Among them: the abrasive is white corundum, and the particle size range is F120~F1000; The binder is alumina monohydrate gel powder; The wetting agent is a polyvinyl alcohol aqueous solution with a mass concentration of 15%, the degree of polymerization of the polyvinyl alcohol is 1700, and the degree of alcoholysis is 99%; The curing agent is a UV curing resin.

[0007] Preferably, the phenolic resin liquid has a solid content range of 65% to 75% and a viscosity range of 400 to 600 mPa·s.

[0008] Preferably, the phenolic resin powder has a softening point range of 85°C to 110°C, a free phenol content of 3.5% to 7%, and a particle size of 80% to 85% of 240# and finer.

[0009] Preferably, the polyvinyl butyral resin has a softening point range of 60°C to 65°C and a particle size of 240# or finer.

[0010] Preferably, the gypsum powder has a density of 2.2-2.4 g / cm3 and a particle size of 240# or finer.

[0011] Preferably, the potassium fluoroborate has a density of 2.5-2.6 g / cm3 and a particle size of 240# or finer.

[0012] Preferably, the zinc sulfide has a density of 4.0-4.1 g / cm3 and a particle size of 240# or finer.

[0013] Accordingly, the present invention provides a method for preparing a ceramic bond agglomerated abrasive for a special resin grinding wheel for grinding the end surface of a compressor valve plate, comprising the following steps: S1. First, polyvinyl alcohol and distilled water are prepared into a solution with a mass concentration of 15% in a 95° C. water bath, and then the base abrasive, alumina monohydrate gel powder, polyvinyl alcohol solution and ultraviolet light curing resin liquid are uniformly mixed according to the formula to obtain a mixture; S2, putting the mixed material into a double-screw rotary extrusion granulator for shaping to obtain agglomerated abrasives with a uniform outer diameter, and the particle size range of the abrasives is F10~F46; S3, curing the shaped agglomerated abrasive under ultraviolet light for 20-30 minutes to further improve the strength of the agglomerated abrasive; S4, drying the agglomerated abrasive after UV curing at 60° C. to 80° C. to remove moisture; S5, placing the dried agglomerated abrasive in a rotary electric furnace, and rapidly sintering at 1100°C to 1200°C for 50 to 60 minutes; S6. The sintered abrasive is cooled and then sieved to obtain ceramic agglomerated abrasive with a specific particle size.

[0014] Accordingly, the present invention also provides a method for preparing a special resin grinding wheel for grinding the end surface of a compressor valve plate, comprising the following steps: a. Put the ceramic agglomerated abrasive and phenolic resin liquid into a blender and stir for 7-9 minutes; b. Put phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide into a double cone powder mixer and stir for 4 to 6 minutes to obtain a uniformly mixed powder; c. Stir the evenly mixed powder and the moistened abrasive in a mixer for 2-3 minutes and then pass through a sieve with a suitable mesh to obtain a molding material; d. Evenly put the molding material into the mold, use a 160-ton grinding wheel molding press to perform cold pressing, and obtain a grinding wheel embryo after demolding; e. Place the grinding wheel blank in a drying room at 60℃~80℃ for 18h~24h and then heat cure it. The curing temperature curve is: room temperature rises to 55℃ after 3h, and keeps warm for 3h; 55℃ rises to 180℃ after 8h, keeps warm for 7h, and takes out of the oven after cooling.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the ceramic grinding wheel has many advantages such as good retention, high grinding efficiency, easy heat dissipation, etc., but the use of ceramic binder to make fine-grained grinding wheels is prone to cracks, uneven internal structure and other undesirable phenomena, so for workpieces with high surface accuracy requirements, resin grinding wheels are generally used for processing, but the fine-grained resin grinding wheel has a tight structure, is not easy to dissipate heat during grinding, is easy to clog, has a small feed amount, and has low grinding efficiency. The present invention combines the advantages of ceramic grinding wheels and resin grinding wheels, firstly uses ceramic binder to prepare agglomerated abrasives with porous structure, high bonding strength and good self-sharpening, and then uses ceramic agglomerated abrasives to prepare resin grinding wheels, the resin grinding wheel has loose structure, high mechanical strength and good retention, and under the premise of ensuring roughness, has high grinding efficiency, good heat dissipation, large single feed amount, no need for dressing, can reduce the grinding process, ensure the surface accuracy of the workpiece, and effectively avoid the undesirable phenomena of ceramic grinding wheels and resin grinding wheels during fine processing. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1 A special resin grinding wheel for grinding the end surface of a compressor valve plate comprises 25 kg of abrasive, 1 kg of phenolic resin liquid, 3 kg of phenolic resin powder, 0.5 kg of polyvinyl butyral resin, 0.8 kg of gypsum powder, 0.5 kg of potassium fluoroborate and 0.5 kg of zinc oxide; wherein the abrasive is F24 ceramic agglomerated abrasive prepared from F120 white corundum and a ceramic binder.

[0018] The ceramic agglomerated abrasive and phenolic resin liquid were stirred in a mixer for 7 minutes to be evenly mixed; the phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide were stirred in a double cone powder mixer for 4 minutes to be evenly mixed; the evenly mixed powder and the wetted abrasive were stirred in a mixer for 2 minutes and then passed through a sieve of appropriate mesh to obtain a molding material; the molding material was evenly put into a mold, and a 1600-ton grinding wheel molding press was used for cold pressing molding, and a grinding wheel embryo was obtained after demolding; the grinding wheel embryo was placed in a drying room at 60°C for 1 hour. After 8 hours, thermal curing is carried out, and the curing temperature curve is as follows: room temperature rises to 55°C after 3 hours, and is kept warm for 3 hours; 55°C rises to 180°C after 8 hours, and is kept warm for 7 hours, and is taken out of the oven after cooling; the grinding wheel is processed and inspected in accordance with national standards, and specific inspection items include the hardness of the grinding wheel, the rotation strength, and the grinding conditions of the compressor valve plate, including the surface quality of the workpiece and the workpiece consumption; among them, the compressor valve plate grinding process is a grinding wheel speed of 1440rpm, a single feed of 10 wires, a grinding time of 10 seconds, and a feed number of 5 times.

[0019] Example 2 A special resin grinding wheel for grinding the end surface of a compressor valve plate comprises 25 kg of abrasive, 1.5 kg of phenolic resin liquid, 2.5 kg of phenolic resin powder, 0.6 kg of polyvinyl butyral resin, 0.7 kg of gypsum powder, 0.4 kg of potassium fluoroborate and 0.6 kg of zinc oxide; wherein the abrasive is F16 ceramic agglomerated abrasive prepared from F240 white corundum and a ceramic binder.

[0020] The ceramic agglomerated abrasive and phenolic resin liquid are stirred in a mixer for 8 minutes to be evenly mixed; the phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide are stirred in a double cone powder mixer for 5 minutes to be evenly mixed; the evenly mixed powder and the wetted abrasive are stirred in a mixer for 2.5 minutes and then passed through a sieve of appropriate mesh to obtain a molding material; the molding material is evenly put into a mold, and a 1600-ton grinding wheel molding press is used for cold pressing molding, and a grinding wheel embryo is obtained after demolding; the grinding wheel embryo is placed in a drying room at 70°C for drying. After 20 hours, thermal curing is carried out, and the curing temperature curve is as follows: room temperature rises to 55°C after 3 hours, and is kept warm for 3 hours; 55°C rises to 180°C after 8 hours, and is kept warm for 7 hours, and is taken out of the oven after cooling; the grinding wheel is processed and inspected in accordance with national standards, and specific inspection items include the hardness of the grinding wheel, the rotation strength, and the grinding conditions of the compressor valve plate, including the surface quality of the workpiece and the workpiece consumption; among them, the compressor valve plate grinding process is a grinding wheel speed of 1440rpm, a single feed of 10 wires, a grinding time of 10 seconds, and a feed number of 5 times.

[0021] Example 3 A special resin grinding wheel for grinding the end surface of a compressor valve plate comprises 25 kg of abrasive, 1.5 kg of phenolic resin liquid, 3 kg of phenolic resin powder, 0.5 kg of polyvinyl butyral resin, 0.6 kg of gypsum powder, 0.6 kg of potassium fluoroborate and 0.4 kg of zinc oxide; wherein the abrasive is F36 ceramic agglomerated abrasive prepared from F400 white corundum and a ceramic binder.

[0022] The ceramic agglomerated abrasive and phenolic resin liquid were stirred in a mixer for 9 minutes to be evenly mixed; the phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide were stirred in a double cone powder mixer for 6 minutes to be evenly mixed; the evenly mixed powder and the wetted abrasive were stirred in a mixer for 3 minutes and then passed through a sieve of appropriate mesh to obtain a molding material; the molding material was evenly put into a mold, and a 1600-ton grinding wheel molding press was used for cold pressing molding, and a grinding wheel embryo was obtained after demolding; the grinding wheel embryo was placed in a drying room at 80°C for 2 hours to dry. After 2 hours, thermal curing is carried out, and the curing temperature curve is as follows: room temperature rises to 55°C after 3 hours, and is kept warm for 3 hours; 55°C rises to 180°C after 8 hours, and is kept warm for 7 hours, and is taken out of the oven after cooling; the grinding wheel is processed and inspected in accordance with national standards, and specific inspection items include the hardness of the grinding wheel, the rotation strength, and the grinding conditions of the compressor valve plate, including the surface quality of the workpiece and the workpiece consumption; among them, the compressor valve plate grinding process is a grinding wheel speed of 1440rpm, a single feed of 10 wires, a grinding time of 10 seconds, and a feed number of 5 times.

[0023] Example 4 A special resin grinding wheel for grinding the end surface of a compressor valve plate comprises 25 kg of abrasive, 1 kg of phenolic resin liquid, 2.5 kg of phenolic resin powder, 0.6 kg of polyvinyl butyral resin, 0.7 kg of gypsum powder, 0.3 kg of potassium fluoroborate and 0.3 kg of zinc oxide; wherein the abrasive is F46 ceramic agglomerated abrasive prepared from F600 white corundum and a ceramic binder.

[0024] The ceramic agglomerated abrasive and phenolic resin liquid were stirred in a mixer for 8 minutes to be evenly mixed; the phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide were stirred in a double cone powder mixer for 4 minutes to be evenly mixed; the evenly mixed powder and the wetted abrasive were stirred in a mixer for 2 minutes and then passed through a sieve of appropriate mesh to obtain a molding material; the molding material was evenly put into a mold, and a 1600-ton grinding wheel molding press was used for cold pressing molding, and a grinding wheel embryo was obtained after demolding; the grinding wheel embryo was placed in a drying room at 70°C for 2 hours to dry. After 4 hours, thermal curing is carried out, and the curing temperature curve is as follows: room temperature rises to 55°C after 3 hours, and is kept warm for 3 hours; 55°C rises to 180°C after 8 hours, and is kept warm for 7 hours, and is taken out of the oven after cooling; the grinding wheel is processed and inspected in accordance with national standards, and specific inspection items include the hardness of the grinding wheel, the rotation strength, and the grinding conditions of the compressor valve plate, including the surface quality of the workpiece and the workpiece consumption; among them, the compressor valve plate grinding process is a grinding wheel speed of 1440rpm, a single feed of 10 wires, a grinding time of 10 seconds, and a feed number of 5 times.

[0025] Comparative Example 1 A special resin grinding wheel for grinding the end surface of a compressor valve plate, comprising 25kg of abrasive, 1kg of phenolic resin liquid, 3kg of phenolic resin powder, 0.5kg of polyvinyl butyral resin, 0.8kg of gypsum powder, 0.5kg of potassium fluoroborate and 0.5kg of zinc oxide; wherein the abrasive is F120 white corundum.

[0026] The abrasive and phenolic resin liquid are stirred in a mixer for 7 minutes to be evenly mixed; the phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide are stirred in a double cone powder mixer for 4 minutes to be evenly mixed; the evenly mixed powder and the wetted abrasive are stirred in a mixer for 2 minutes and then passed through a sieve of appropriate mesh to obtain a molding material; the molding material is evenly put into a mold, and a 1600-ton grinding wheel molding press is used for cold pressing molding, and a grinding wheel embryo is obtained after demolding; the grinding wheel embryo is placed in a drying room at 60°C and dried for 18 hours Then it is thermally cured, and the curing temperature curve is as follows: room temperature rises to 55°C after 3h, and is kept warm for 3h; 55°C rises to 180°C after 8h, and is kept warm for 7h, and then it is taken out of the oven after cooling; the grinding wheel is processed and inspected in accordance with national standards, and the specific inspection items include the hardness of the grinding wheel, the rotation strength, and the grinding conditions of the compressor valve plate, including the surface quality of the workpiece and the workpiece consumption; among them, the compressor valve plate grinding process is a grinding wheel speed of 1440rpm, a single feed of 10 wires, a grinding time of 10 seconds, and a feed number of 5 times.

[0027] Comparative Example 2 A special resin grinding wheel for grinding the end surface of a compressor valve plate comprises 25 kg of abrasive, 1 kg of phenolic resin liquid, 2.5 kg of phenolic resin powder, 0.6 kg of polyvinyl butyral resin, 0.7 kg of gypsum powder, 0.3 kg of potassium fluoroborate and 0.3 kg of zinc oxide; wherein the abrasive is F46 ceramic agglomerated abrasive prepared from F600 white corundum and a ceramic binder.

[0028] The ceramic agglomerated abrasive and phenolic resin liquid were stirred in a mixer for 8 minutes to be evenly mixed; the phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide were stirred in a double cone powder mixer for 4 minutes to be evenly mixed; the evenly mixed powder and the wetted abrasive were stirred in a mixer for 2 minutes and then passed through a sieve of appropriate mesh to obtain a molding material; the molding material was evenly put into a mold, and a 1600-ton grinding wheel molding press was used for cold pressing molding, and a grinding wheel embryo was obtained after demolding; the grinding wheel embryo was placed in a drying room at 70°C for 2 hours to dry. After 4 hours, thermal curing is carried out, and the curing temperature curve is as follows: room temperature rises to 55°C after 3 hours, and is kept warm for 3 hours; 55°C rises to 180°C after 8 hours, and is kept warm for 7 hours, and is taken out of the oven after cooling; the grinding wheel is processed and inspected in accordance with national standards, and specific inspection items include the hardness of the grinding wheel, the rotation strength, and the grinding conditions of the compressor valve plate, including the surface quality of the workpiece and the workpiece consumption; among them, the compressor valve plate grinding process is a grinding wheel speed of 1440rpm, a single feed of 10 wires, a grinding time of 10 seconds, and a feed number of 5 times.

[0029] The specific parameter data of Examples 1, 2, 3, 4 and Comparative Examples 1 and 2 are shown in the following table Example 1 Example 2 Example 3 Example 4 Comparative Example 1 Comparative Example 2 Grinding wheel hardness 1.02 0.98 1.13 1.09 0.88 0.91 Grinding wheel rotation strength 35m / s 35m / s 35m / s 35m / s 35m / s 35m / s Workpiece consumption 0.49mm 0.50mm 0.48mm 0.49mm 0.38mm 0.25mm Workpiece surface condition Smooth without scratches or burns Smooth without scratches or burns Smooth without scratches or burns Smooth without scratches or burns Some scratches, slight burns No scratches, severe burns Roughness 0.30μm 0.22μm 0.19μm 0.15μm 0.49μm 0.40μm It can be seen from the above table that the special resin grinding wheel for grinding the end surface of a compressor valve plate prepared by the present invention has better grinding efficiency and higher surface quality than ordinary resin grinding wheels under the same grinding conditions.

[0030] During the grinding process, ordinary resin grinding wheels are easily blocked and burn the workpiece due to their compact structure and low porosity, requiring multiple dressings, low grinding efficiency, and poor workpiece surface quality. The resin grinding wheel prepared by the present invention has abrasives that fall off layer by layer during the grinding process, good self-sharpening, high sharpness, easy heat dissipation, and is not easy to burn the workpiece. In addition, the grinding wheel abrasive is composed of a combination of finer-grained abrasives, ensuring that the workpiece has a higher surface quality.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special resin grinding wheel for grinding the end surface of a compressor valve plate, characterized in that: The invention comprises the following components by weight: 100 parts of abrasive, 4-6 parts of phenolic resin liquid, 10-15 parts of phenolic resin powder, 1-2 parts of polyvinyl butyral resin, 2-3 parts of gypsum powder, 1-2 parts of potassium fluoroborate and 1-2 parts of zinc sulfide.

2. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The abrasive is a large-particle corundum micro-powder agglomerate prepared by using a ceramic binder. The formula of the large-particle corundum micro-powder agglomerate prepared by using a ceramic binder is as follows: Material wt% weight percentage Abrasive 83 Binder 12 Wetting agent 2 Curing agent 3 Total 100 Among them: the abrasive is white corundum, and the particle size range is F120~F1000; The binder is alumina monohydrate gel powder; The wetting agent is a polyvinyl alcohol aqueous solution with a mass concentration of 15%, the degree of polymerization of the polyvinyl alcohol is 1700, and the degree of alcoholysis is 99%; The curing agent is a UV curing resin.

3. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The phenolic resin liquid has a solid content range of 65% to 75% and a viscosity range of 400 to 600 mPa·s.

4. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The phenolic resin powder has a softening point range of 85°C to 110°C, a free phenol content of 3.5% to 7%, and a particle size of 80% to 85% of 240# and finer.

5. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The polyvinyl butyral resin has a softening point range of 60°C to 65°C and a particle size of 240# or finer.

6. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The gypsum powder has a density of 2.2-2.4 g / cm3 and a particle size of 240# or finer.

7. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The potassium fluoroborate has a density of 2.5-2.6 g / cm3 and a particle size of 240# or finer.

8. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 1, characterized in that: The zinc sulfide has a density of 4.0-4.1 g / cm3 and a particle size of 240# or finer.

9. The special resin grinding wheel for grinding the end surface of a compressor valve plate according to claim 2, characterized in that: The preparation method of large-particle corundum micro-powder agglomerates with ceramic binder comprises the following steps: S1. First, polyvinyl alcohol and distilled water are prepared into a solution with a mass concentration of 15% in a 95° C. water bath, and then the base abrasive, alumina monohydrate gel powder, polyvinyl alcohol solution and ultraviolet light curing resin liquid are uniformly mixed according to the formula to obtain a mixture; S2, putting the mixed material into a double-screw rotary extrusion granulator for shaping to obtain agglomerated abrasives with a uniform outer diameter, and the particle size range of the abrasives is F10~F46; S3, curing the shaped agglomerated abrasive under ultraviolet light for 20-30 minutes to further improve the strength of the agglomerated abrasive; S4, drying the agglomerated abrasive after UV curing at 60° C. to 80° C. to remove moisture; S5, placing the dried agglomerated abrasive in a rotary electric furnace, and rapidly sintering at 1100°C to 1200°C for 50 to 60 minutes; S6. The sintered abrasive is cooled and then sieved to obtain ceramic agglomerated abrasive with a specific particle size.

10. A method for preparing a resin grinding wheel for grinding the end surface of a compressor valve plate, applied to the resin grinding wheel according to any one of claims 1 to 9, characterized in that: The preparation method comprises the following steps: a. Put the ceramic agglomerated abrasive and phenolic resin liquid into a blender and stir for 7-9 minutes; b. Put phenolic resin powder, polyvinyl butyral resin powder, gypsum powder, potassium fluoroborate and zinc oxide into a double cone powder mixer and stir for 4 to 6 minutes to obtain a uniformly mixed powder; c. Stir the evenly mixed powder and the moistened abrasive in a mixer for 2-3 minutes and then pass through a sieve with a suitable mesh to obtain a molding material; d. Evenly put the molding material into the mold, use a 1600-ton grinding wheel molding press to perform cold pressing, and obtain a grinding wheel embryo after demolding; e. Place the grinding wheel blank in a drying room at 60℃~80℃ for 24 hours and then heat cure it. The curing temperature curve is: room temperature rises to 55℃ after 3 hours, and keeps warm for 3 hours; 55℃ rises to 180℃ after 8 hours, keeps warm for 7 hours, and takes it out of the oven after cooling.