Polycrystalline cubic boron nitride, preparation method and application of polycrystalline cubic boron nitride and cutter which comprises polycrystalline cubic boron nitride

A cubic boron nitride and polycrystalline cubic technology, which is applied in the field of polycrystalline cubic boron nitride and polycrystalline cubic boron nitride cutting tools and preparation, can solve the problems of high sintering temperature, low hardness, poor wear resistance, etc. The effect of improving strength and wear resistance

Active Publication Date: 2018-05-01
FUNIK ULTRAHARD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current binders are mainly metal binders or ceramic binders. However, the use of metal binders or ceramic binders alone has the disadvantages of poor bonding effect or high sintering temperature. The obtained polycrystalline cubic boron nitride Low density, low hardness, poor wear resistance

Method used

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  • Polycrystalline cubic boron nitride, preparation method and application of polycrystalline cubic boron nitride and cutter which comprises polycrystalline cubic boron nitride
  • Polycrystalline cubic boron nitride, preparation method and application of polycrystalline cubic boron nitride and cutter which comprises polycrystalline cubic boron nitride
  • Polycrystalline cubic boron nitride, preparation method and application of polycrystalline cubic boron nitride and cutter which comprises polycrystalline cubic boron nitride

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Embodiment 1

[0073] A polycrystalline cubic boron nitride, mainly prepared from the following raw materials in parts by volume: 55 parts of cubic boron nitride, 30 parts of titanium carbide and 5 parts of aluminum powder;

[0074]The particle size of cubic boron nitride is 5 μm, that of titanium carbide is 2 μm, and that of aluminum powder is 10 μm.

Embodiment 2

[0076] A polycrystalline cubic boron nitride, mainly prepared from the following raw materials in parts by volume: 58 parts of cubic boron nitride, 32 parts of a combination of titanium carbide and chromium carbide, and 5.5 parts of silicon powder;

[0077] The particle size of cubic boron nitride is 5 μm, the particle size of titanium carbide and chromium carbide is 1 μm, and the particle size of silicon powder is 8 μm.

Embodiment 3

[0079] A polycrystalline cubic boron nitride, mainly prepared from the following raw materials in parts by volume: 62 parts of cubic boron nitride, 36 parts of tungsten carbide and 6.5 parts of titanium powder;

[0080] The particle size of cubic boron nitride is 3 μm, that of tungsten carbide is 0.5 μm, and that of titanium powder is 2 μm.

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Abstract

The invention relates to the field of superhard materials, and specifically provides a polycrystalline cubic boron nitride, a preparation method and application of the polycrystalline cubic boron nitride and a cutter which comprises the polycrystalline cubic boron nitride. The polycrystalline cubic boron nitride is mainly prepared from, in parts by volume, 55-65 parts of cubic boron nitride, 30-38parts of carbide of transition metal and 5-7 parts of metal powder, wherein the transition metal is at least one element of the subgroups of 4 or 5 or 6 in the periodic table, and the metal powder includes at least one of Al or Si or Ti. The polycrystalline cubic boron nitride is mainly prepared from the cubic boron nitride, carbide of the transition metal and metal powder according to specific volume fractions, and through scientific cooperation of the raw materials, the polycrystalline cubic boron nitride has the advantages of high hardness and good wear resistance.

Description

technical field [0001] The invention relates to the field of superhard materials, in particular to a polycrystalline cubic boron nitride, a preparation method and application thereof, and a cutting tool containing the polycrystalline cubic boron nitride. Background technique [0002] Cubic boron nitride (cBN) is a superhard material second only to diamond. It not only has many excellent properties of diamond, but also has higher thermal stability and chemical inertness to iron group metals and their alloys. As an engineering material, it has Widely used in the processing industry of ferrous metals and their alloy materials. At the same time, cubic boron nitride has been applied in a series of high-tech fields due to its excellent thermal, electrical, optical and acoustic properties, and has become a functional material with great development prospects. [0003] Polycrystalline cubic boron nitride (PcBN) is a polycrystalline cubic boron nitride, which is widely used in the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/5831C04B35/622C04B35/63
CPCC04B35/5831C04B35/622C04B35/6303C04B2235/3839C04B2235/3843C04B2235/3847C04B2235/402C04B2235/404C04B2235/428C04B2235/77C04B2235/96
Inventor 李丙文马宁王彬彬解亚军陈培
Owner FUNIK ULTRAHARD MATERIAL
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