PCBN cutting tool material and its preparation method

A tool material and cubic technology, which is applied in the field of polycrystalline cubic boron nitride tool materials, can solve the problems of dependence on imports, low performance, and difficulty in meeting usage requirements, and achieve the effect of high production efficiency and strong controllability

Active Publication Date: 2020-10-02
ZHENGZHOU UNIVERSITY OF AERONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The performance of domestically produced cubic boron nitride tool materials is low, and it is difficult to meet the requirements of use. High-performance cubic boron nitride tool materials mainly rely on imports

Method used

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  • PCBN cutting tool material and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] PCBN tool material is made of the following raw materials in weight percentage:

[0034] 80% cubic boron nitride powder and 20% binding agent; the particle size of the cubic boron nitride powder is 1-8 μm; the weight percentage composition of the binding agent is the following composition a or composition b;

[0035] Composition a: 10% zirconia, 0.5% ytterbium aluminum garnet, the balance is TiB 2 powder;

[0036] Composition b: metal powder 3%, zirconia 7%, ytterbium aluminum garnet 0.5%, the balance is TiB 2 Powder; wherein, the metal powder is all Ti powder.

[0037] The preparation method includes the following steps:

[0038] ① Treatment of cubic boron nitride powder: pickling the cubic boron nitride powder with 15 mol / L hydrofluoric acid for 4 hours, centrifugal separation of the acid-washed cubic boron nitride powder, first washing with water and then using Wash with water, ethanol and alcohol, and then dry in a vacuum drying oven at 80 ℃ for 8 h;

[0039] ②Mixing: the bin...

Embodiment 2

[0043] PCBN tool material is made of the following raw materials in weight percentage:

[0044] The cubic boron nitride powder is 70%, the binder is 30%; the cubic boron nitride powder has a particle size of 8-15 μm; the weight percentage composition of the binder is the following composition a or composition b;

[0045] Composition a: 5% zirconia, 1% ytterbium aluminum garnet, the balance is TiB 2 powder;

[0046] Composition b: metal powder 1%, zirconia 15%, ytterbium aluminum garnet 1%, the balance is TiB 2 Powder; wherein the metal powder is Ti powder and Al powder, and the weight ratio of Ti powder and Al powder is 1:1.

[0047] The preparation method is the same as in Example 1.

Embodiment 3

[0049] PCBN tool material is made of the following raw materials in weight percentage:

[0050] 90% cubic boron nitride powder and 10% bonding agent; the particle size of the cubic boron nitride powder is 4-10 μm; the weight percentage composition of the bonding agent is the following composition a or composition b;

[0051] Composition a: 20% zirconia, 5% ytterbium aluminum garnet, the balance is TiB 2 powder;

[0052] Composition b: metal powder 10%, zirconia 10%, ytterbium aluminum garnet 5%, the balance is TiB 2 Powder; wherein, the metal powder is all Al powder.

[0053] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to the field of PCBN (polycrystalline cubic boron nitride) cutter materials and discloses a novel PCBN (polycrystalline cubic boron nitride) cutter material and a preparation method thereof. The PCBN cutter material is prepared from raw materials in percentage by weight as follows: 25%-95% of CBN powder and 5%-75% of a binding agent, wherein the binding agent is prepared from composition a and composition b, the composition a is prepared from, in percentage by weight, larger than 0 and smaller than or equal to 20% of zirconium oxide, larger than 0 and smaller than or equal to 5% of ytterbium aluminum garnet or zirconium oxide, and the balance of TiB2 powder; the composition b is prepared from, in percentage by weight, 1-10% of metal powder, larger than 0 and smaller than or equal to 20% of zirconium oxide, larger than 0 and smaller than or equal to 5% of ytterbium aluminum garnet or zirconium oxide and the balance of TiB2 powder; the metal powder is one of or a mixture of Ti powder and Al powder. The prepared PCBN cutter material is high in hardness and has excellent high-temperature performance.

Description

Technical field [0001] The invention belongs to the field of polycrystalline cubic boron nitride tool materials, and specifically relates to a PCBN tool material and a preparation method thereof. Background technique [0002] Cubic boron nitride tool materials have high hardness and wear resistance, stable chemical properties, and high oxidation resistance. They are especially suitable for processing iron-based alloy materials that cannot be processed by diamond tools, and therefore have huge market potential. In recent years, the introduction and application of high-speed cutting and lubricating-free cutting have made higher requirements for the high-temperature performance of tool materials. [0003] Domestically produced cubic boron nitride tool materials have low performance and are difficult to meet the requirements of use. High-performance cubic boron nitride tool materials mainly rely on imports. Therefore, it is of great significance to develop high-performance cubic boron...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/5831C04B35/64C04B35/626
CPCC04B35/5831C04B35/62605C04B35/64C04B2235/3224C04B2235/3244C04B2235/3813C04B2235/666C04B2235/96
Inventor 丁云鹏张锐李剑高卡樊磊郭晓琴刘军威王海龙
Owner ZHENGZHOU UNIVERSITY OF AERONAUTICS
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