Superhard composite abrasive material and preparation method thereof
A composite abrasive and superhard technology, which is applied in the direction of grinding/polishing equipment, chemical instruments and methods, grinding devices, etc., can solve the problems of short service life and low processing efficiency, and achieve long service life, convenient operation, high Effect of Hardness and Toughness
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Embodiment 1
[0024] The superhard composite abrasive of this embodiment is composed of the following components in weight percent: 30% of cubic boron nitride with a particle size of 0.5-1 μm, 50% of corundum with a particle size of 10-30 μm, and aluminum nitride with a particle size of 10-30 μm 10%, 10% aluminum powder with a particle size of 1-2 μm.
[0025] The preparation method of the superhard composite abrasive of the present embodiment comprises the following steps:
[0026] 1) Mix cubic boron nitride, corundum, aluminum nitride and aluminum powder to make composite powder;
[0027] 2) The composite powder obtained in step 1) was sintered at 50,000 atmospheres and 1500°C for 15 minutes to obtain the superhard composite abrasive.
[0028] The particle size of the obtained superhard composite abrasive is 0.5-0.7 mm, and the static pressure strength of a single particle is 2-4 kg.
Embodiment 2
[0030] The superhard composite abrasive of this embodiment is composed of the following components in weight percentage: 55% of cubic boron nitride with a particle size of 1-5 μm, 25% of corundum with a particle size of 10-20 μm, and titanium nitride with a particle size of 10-20 μm 10%, 10% cobalt powder with a particle size of 1-2 μm.
[0031] The preparation method of the superhard composite abrasive of the present embodiment comprises the following steps:
[0032] 1) Mix cubic boron nitride, corundum, titanium nitride and cobalt powder to make composite powder;
[0033] 2) The composite powder obtained in step 1) was sintered at 55,000 atmospheres and 1550° C. for 15 minutes to obtain the superhard composite abrasive.
[0034] The particle size of the obtained superhard composite abrasive is 0.7-0.9 mm, and the static pressure strength of a single particle is 4-7 kg.
Embodiment 3
[0036] The superhard composite abrasive of this embodiment is composed of the following components in weight percentage: 30% of diamond with a particle size of 1-5 μm, 25% of corundum with a particle size of 10-20 μm, 40% of titanium nitride with a particle size of 10-20 μm, 5% aluminum powder with a particle size of 1-2 μm.
[0037] The preparation method of the superhard composite abrasive of the present embodiment comprises the following steps:
[0038] 1) Mix diamond, corundum, titanium nitride and aluminum powder to make composite powder;
[0039] 2) The composite powder obtained in step 1) was sintered at 55,000 atmospheres and 1550° C. for 15 minutes to obtain the superhard composite abrasive.
[0040] The particle size of the obtained superhard composite abrasive is 0.7-0.9 mm, and the static pressure strength of a single particle is 3-6 kg.
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