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

Active Publication Date: 2015-01-21
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a superhard composite abrasive to solve the problems of short service life and low processing efficiency of existing metal cutting and grinding abrasives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses superhard composite abrasive material and a preparation method thereof. The superhard composite abrasive material is composed of the following components by weight: 10%-90% of cubic boron nitride and/or diamond and 10%-90% of an additive, wherein the additive is any one or a combination of oxide, nitride, carbide, carbonitride, aluminium nitride, garnet and doped metal. The superhard composite abrasive material combines cubic boron nitride and/or any one or a combination of oxide, nitride, carbide, carbonitride, aluminium nitride, garnet and doped metal. The obtained composite abrasive material has relatively high hardness and toughness, high milling capacity, high efficiency, relatively good abrasive resistance, thermal stability and chemical stability, and relatively long service life. Meanwhile, little raise dust is produced in a processing process of the abrasive material, thereby preventing pollution to ambient air and being suitable for processing processes of metal cutting and polishing.

Description

technical field [0001] The invention belongs to the technical field of superhard composite materials, in particular relates to a superhard composite abrasive, and also relates to a preparation method of the superhard composite abrasive. Background technique [0002] Abrasive is a granular material with high hardness and certain mechanical strength, which is used to make abrasive tools or directly for grinding and polishing. Abrasives are widely used in industry, especially when processing high-precision or low-roughness parts or hard parts, abrasives and grinding tools are essential. Generally speaking, abrasives have the following basic characteristics: 1) high hardness, the hardness of the abrasive must be higher than the hardness of the object being processed; 2) moderate resistance to crushing and self-sharpening; 3) good thermal stability and chemical stability. [0003] At present, the cutting and grinding of metals all use common abrasives, such as cutting and grind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/14B24D18/00
Inventor 李剑李和鑫
Owner FUNIK ULTRAHARD MATERIAL
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