Resin grinding wheel and manufacturing method thereof

Abstract

The invention provides a resin grinding wheel and a manufacturing method thereof, which belong to the field of grinding tools and are used for solving the problem of the production of harmful sulfur dioxide by pyrite serving as a lubricating agent existing in the conventional resin grinding wheel. The resin grinding wheel comprises a grinding body and a reinforcing sheet which is arranged inside the grinding body for enhancing the revolving strength of the grinding body, wherein 90-105 parts by mass of corundum is taken as a grinding material the grinding body; 2-8 parts by mass of phenolic aldehyde resin liquid and 6-25 parts by mass of phenolic aldehyde resin powder are taken as bonding agents; and 1-10 parts by mass of cryolite and 1-5 parts by mass of polytetrafluoroethylene powder are taken as fillers. The invention further provides a manufacturing method of the resin grinding wheel. In the grinding wheel, the polytetrafluoroethylene powder instead of pyrite is taken as a lubricating agent, so that sulfur dioxide is not produced and other pollution is avoided in the using process.

Description

technical field

[0001] The invention belongs to the field of grinding tools, and relates to a resin grinding wheel and a preparation method thereof. Background technique

[0002] Grinding wheel is the main tool for grinding, which is a porous object composed of abrasive and bonding agent. Among them, abrasive, bond and porosity are the three basic elements of grinding wheel. With the different abrasives, bonding agents and grinding wheel manufacturing processes, the characteristics of the grinding wheel may vary greatly, which has an important impact on the accuracy, roughness and production efficiency of the grinding process. Therefore, the appropriate grinding wheel must be selected according to the specific conditions.

[0003] Resin grinding wheel is a grinding wheel whose binder is resin. It has the advantages of small grinding force, low grinding temperature, good self-sharpening, and high grinding efficiency. It is widely used in the grinding of hard and brittle mat...

Examples

Embodiment 1

[0031] The resin grinding wheel to be prepared in this embodiment is a flat grinding wheel, such as figure 1 shown.

[0032] First, weigh raw materials with a certain weight ratio for batching. The types of raw materials and their parts by weight are 93 parts of white corundum, 4 parts of phenolic resin liquid, 16 parts of phenolic resin powder, 8 parts of cryolite, polytetrafluoroethylene Powder 2 parts. The white corundum has a particle size of 24-30 mesh, and the average particle size of the polytetrafluoroethylene powder is between 3-30 μm.

[0033] Then, put the white corundum into the phenolic resin solution for soaking, and stir sufficiently, so that the surface of the white corundum particles is fully adhered to the phenolic resin solution. After sufficient infiltration, mix phenolic resin powder, cryolite and polytetrafluoroethylene powder with white corundum, and continue to stir until the three materials are fully mixed and even.

[0034] The mixed raw material g...

Embodiment 2

[0039] The resin grinding wheel to be prepared in this embodiment is a cymbal type grinding wheel, such as figure 2 shown.

[0040] Similarly, batching is carried out first, and the types of raw materials and their parts by weight are respectively 90 parts of white corundum, 6 parts of phenolic resin liquid, 20 parts of phenolic resin powder, 2 parts of cryolite, 5 parts of polytetrafluoroethylene powder, and 2 parts of carbon black.

[0041] Then, mix and sieve in the same manner as in the first embodiment.

[0042]The forming steps for cymbal wheels are slightly different from those for parallel wheels. Similarly, for example, if three grinding wheels are formed at one time, three parts of molding materials are weighed first, and each part is just equal to or slightly more than the weight required to manufacture one grinding wheel. In the same way, put half of the molding material in the forming mold and spread it flat, cover the reinforcement sheet, then spread the other...

technical field

[0001] The invention belongs to the field of grinding tools, and relates to a resin grinding wheel and a preparation method thereof. Background technique

[0002] Grinding wheel is the main tool for grinding, which is a porous object composed of abrasive and bonding agent. Among them, abrasive, bond and porosity are the three basic elements of grinding wheel. With the different abrasives, bonding agents and grinding wheel manufacturing processes, the characteristics of the grinding wheel may vary greatly, which has an important impact on the accuracy, roughness and production efficiency of the grinding process. Therefore, the appropriate grinding wheel must be selected according to the specific conditions.

[0003] Resin grinding wheel is a grinding wheel whose binder is resin. It has the advantages of small grinding force, low grinding temperature, good self-sharpening, and high grinding efficiency. It is widely used in the grinding of hard and brittle mat...

Examples

Embodiment 1

[0031] The resin grinding wheel to be prepared in this embodiment is a flat grinding wheel, such as figure 1 shown.

[0032] First, weigh raw materials with a certain weight ratio for batching. The types of raw materials and their parts by weight are 93 parts of white corundum, 4 parts of phenolic resin liquid, 16 parts of phenolic resin powder, 8 parts of cryolite, polytetrafluoroethylene Powder 2 parts. The white corundum has a particle size of 24-30 mesh, and the average particle size of the polytetrafluoroethylene powder is between 3-30 μm.

[0033] Then, put the white corundum into the phenolic resin solution for soaking, and stir sufficiently, so that the surface of the white corundum particles is fully adhered to the phenolic resin solution. After sufficient infiltration, mix phenolic resin powder, cryolite and polytetrafluoroethylene powder with white corundum, and continue to stir until the three materials are fully mixed and even.

[0034] The mixed raw material g...

Embodiment 2

[0039] The resin grinding wheel to be prepared in this embodiment is a cymbal type grinding wheel, such as figure 2 shown.

[0040] Similarly, batching is carried out first, and the types of raw materials and their parts by weight are respectively 90 parts of white corundum, 6 parts of phenolic resin liquid, 20 parts of phenolic resin powder, 2 parts of cryolite, 5 parts of polytetrafluoroethylene powder, and 2 parts of carbon black.

[0041] Then, mix and sieve in the same manner as in the first embodiment.

[0042]The forming steps for cymbal wheels are slightly different from those for parallel wheels. Similarly, for example, if three grinding wheels are formed at one time, three parts of molding materials are weighed first, and each part is just equal to or slightly more than the weight required to manufacture one grinding wheel. In the same way, put half of the molding material in the forming mold and spread it flat, cover the reinforcement sheet, then spread the other...

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