Preparation method for epoxy resin binding agent diamond grinding tool with high polishing performance

Abstract

The invention discloses a preparation method for an epoxy resin binding agent diamond grinding tool with high polishing performance. A working layer is mainly prepared from a diamond grinding material, an auxiliary grinding material, epoxy resin, a curing agent, rare earth polishing powder, filler and a dilution agent. The preparation method comprises the steps of uniformly and mechanically mixing 5-20 parts of the diamond grinding material, 5-20 parts of the auxiliary grinding material, 5-25 parts of the rare earth polishing powder and 5-40 parts of the filler to obtain a first mixture, then uniformly mixing and stirring the first mixture with 20-40 parts of the epoxy resin, 7-15 parts of the curing agent and 0.5-10 parts of the dilution agent to obtain a final mixture, injecting the mixture with flowability into a plastic mold in a pouring manner, and curing the mixture to obtain the epoxy resin binding agent diamond grinding tool with high polishing performance. The materials are in percentage by mass. Compared with the conventional hot pressing molding method, the preparation method has the advantages that the technology is simple, the energy is saved, and the emission is reduced; the pollution, which is caused by solid dust, to the environment is reduced, and the production speed is high; compared with the conventional product in the foreign country, the epoxy resin binding agent diamond grinding tool has the advantages of good polishing effect, high polishing efficiency, few air hole defects of the grinding tool and the like.

Description

technical field

[0001] The invention relates to a method for preparing an abrasive tool, in particular to a method for preparing an epoxy resin bonded diamond abrasive tool with high polishing performance. Background technique

[0002] Superhard material resin abrasive tools are made of superhard material diamond or cubic boron nitride as abrasive, resin powder as binder, adding appropriate filling materials, and through the process of preparation, mixing, hot pressing, curing and mechanical processing. It is a processing tool with a certain geometric shape and can be applied to different grinding requirements. In superhard material abrasive tools, resin bond abrasive tools account for about 30% to 60%. Superhard material resin abrasive tools have the advantages of easy availability of raw materials and low cost; low temperature curing, short production cycle, and required equipment and manufacturing processes The process is simple; the grinding efficiency is high; the abra...

Examples

Embodiment 1

[0033] According to mass percentage, 13 parts of diamond micropowder with a particle size of 1000 mesh, 15 parts of rare earth polishing powder with a particle size of 1500 mesh, 5 parts of silicon carbide micropowder with a particle size of 1000 mesh, 2 parts of corundum with a particle size of 800 mesh, and hollow with a particle size of 1000 mesh 23.5 parts of glass microspheres, after the above powder is mechanically stirred, add 30 parts of epoxy resin (E~44, epoxy value 0.44), 6.5 parts of phenalkamine (PPA, commodity code T~31), 3-aminopropyl After stirring 5 parts of triethoxysilane into a uniform fluid, pour it into the plastic mold by pouring, and cover the top surface of the incompletely cured abrasive with a cotton cloth with the same size as the mold. After 12 hours of static curing, the mold was demoulded, and the abrasive tool was put into an oven at 90° C. for 6 hours, and the epoxy resin bonded diamond abrasive tool with high polishing performance of Example 1 ...

Embodiment 2

[0035] According to mass percentage, 5 parts of diamond micropowder with particle size number of 1000 mesh, 25 parts of rare earth polishing powder with particle size number of 5000 mesh, 10 parts of silicon carbide micropowder with particle size number of 1000 mesh, 15 parts of aluminum hydroxide with particle size number of 1000 mesh, and particle size number of 400 mesh 12 parts of glass fiber, after mechanical stirring, add 14 parts of epoxy resin (E~51, epoxy value 0.51), 3,4-epoxidized 6-methylcyclohexanecarboxylic acid epoxy resin (6201#) 8 parts, 9 parts of polyoxypropylene-based diamine, 2 parts of butanediol, after being stirred into a uniform fluid, inject it into the plastic mold by pouring, and cover the top surface of the incompletely cured abrasive tool with a cotton cloth of the same size as the mold , at a temperature of 85°C and a pressure of not less than 1500Pa for 20 hours of static curing and demoulding, and after the abrasive tool was put into a 90°C oven...

Embodiment 3

[0037] According to mass percentage, the particle size number is 13 parts of 1000 mesh diamond micropowder, the particle size number is 10 parts of rare earth polishing powder of 5000 mesh, the particle size number is 6 parts of silicon carbide micropowder of 1000 mesh, and the particle size number is 31 parts of talc powder of 1000 mesh. After mechanical stirring, Add 24 parts of epoxy resin (E~44, epoxy value 0.44), 5 parts of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, 9 parts of polyoxypropylene diamine After mixing 2 parts of butanediol into a uniform fluid, pour it into the plastic mold by pouring, cover the top surface of the incompletely cured abrasive with a cotton cloth that is the same size as the mold, and place it at a temperature of 90°C and a pressure of not less than 1500Pa After standing and curing for 20 hours, the mold was demolded, and the abrasive tool was put into an oven at 90° C. for 7 hours and cured for 7 hours, and the epoxy resin bonde...

technical field

[0001] The invention relates to a method for preparing an abrasive tool, in particular to a method for preparing an epoxy resin bonded diamond abrasive tool with high polishing performance. Background technique

[0002] Superhard material resin abrasive tools are made of superhard material diamond or cubic boron nitride as abrasive, resin powder as binder, adding appropriate filling materials, and through the process of preparation, mixing, hot pressing, curing and mechanical processing. It is a processing tool with a certain geometric shape and can be applied to different grinding requirements. In superhard material abrasive tools, resin bond abrasive tools account for about 30% to 60%. Superhard material resin abrasive tools have the advantages of easy availability of raw materials and low cost; low temperature curing, short production cycle, and required equipment and manufacturing processes The process is simple; the grinding efficiency is high; the abra...

Examples

Embodiment 1

[0033] According to mass percentage, 13 parts of diamond micropowder with a particle size of 1000 mesh, 15 parts of rare earth polishing powder with a particle size of 1500 mesh, 5 parts of silicon carbide micropowder with a particle size of 1000 mesh, 2 parts of corundum with a particle size of 800 mesh, and hollow with a particle size of 1000 mesh 23.5 parts of glass microspheres, after the above powder is mechanically stirred, add 30 parts of epoxy resin (E~44, epoxy value 0.44), 6.5 parts of phenalkamine (PPA, commodity code T~31), 3-aminopropyl After stirring 5 parts of triethoxysilane into a uniform fluid, pour it into the plastic mold by pouring, and cover the top surface of the incompletely cured abrasive with a cotton cloth with the same size as the mold. After 12 hours of static curing, the mold was demoulded, and the abrasive tool was put into an oven at 90° C. for 6 hours, and the epoxy resin bonded diamond abrasive tool with high polishing performance of Example 1 ...

Embodiment 2

[0035] According to mass percentage, 5 parts of diamond micropowder with particle size number of 1000 mesh, 25 parts of rare earth polishing powder with particle size number of 5000 mesh, 10 parts of silicon carbide micropowder with particle size number of 1000 mesh, 15 parts of aluminum hydroxide with particle size number of 1000 mesh, and particle size number of 400 mesh 12 parts of glass fiber, after mechanical stirring, add 14 parts of epoxy resin (E~51, epoxy value 0.51), 3,4-epoxidized 6-methylcyclohexanecarboxylic acid epoxy resin (6201#) 8 parts, 9 parts of polyoxypropylene-based diamine, 2 parts of butanediol, after being stirred into a uniform fluid, inject it into the plastic mold by pouring, and cover the top surface of the incompletely cured abrasive tool with a cotton cloth of the same size as the mold , at a temperature of 85°C and a pressure of not less than 1500Pa for 20 hours of static curing and demoulding, and after the abrasive tool was put into a 90°C oven...

Embodiment 3

[0037] According to mass percentage, the particle size number is 13 parts of 1000 mesh diamond micropowder, the particle size number is 10 parts of rare earth polishing powder of 5000 mesh, the particle size number is 6 parts of silicon carbide micropowder of 1000 mesh, and the particle size number is 31 parts of talc powder of 1000 mesh. After mechanical stirring, Add 24 parts of epoxy resin (E~44, epoxy value 0.44), 5 parts of 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexyl carboxylate, 9 parts of polyoxypropylene diamine After mixing 2 parts of butanediol into a uniform fluid, pour it into the plastic mold by pouring, cover the top surface of the incompletely cured abrasive with a cotton cloth that is the same size as the mold, and place it at a temperature of 90°C and a pressure of not less than 1500Pa After standing and curing for 20 hours, the mold was demolded, and the abrasive tool was put into an oven at 90° C. for 7 hours and cured for 7 hours, and the epoxy resin bonde...

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