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Hard alloy material

A technology of cemented carbide and tungsten carbide alloy, which is applied in the field of composite materials, can solve the problems of cemented carbide, such as reduced hardness, compression resistance, shortened service life, and single composition, so as to achieve good hardness, improve high temperature resistance and The effect of toughness, excellent high temperature resistance and corrosion resistance

Active Publication Date: 2017-07-18
株洲湘钨超硬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, traditional cemented carbides generally use WC as the hard phase, Co, Ni and other simple substances as the bonding phase, with a single composition, and with the increase of the use temperature, the bonding phase and the hard phase will generally oxidize, resulting in hardness. The hardness and compressive properties of high-quality alloys are reduced, and the service life is shortened

Method used

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  • Hard alloy material

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Effect test

Embodiment 1

[0017] A kind of cemented carbide material, comprises the raw material of following weight part:

[0018] 12 parts of titanium carbide, 5 parts of titanium nitride, 4 parts of tantalum carbide, 3 parts of boron carbide, SiC-Al 2 o 3 -Y 2 o 3 30 parts of nanocomposite powder, 18 parts of nickel-based tungsten carbide alloy powder, and 7 parts of Co60 cobalt-based alloy powder.

[0019] The preparation steps of above-mentioned cemented carbide material are as follows:

[0020] Put the above raw materials into the grinder according to the above ratio for mixing and grinding. The speed of the grinder is 100r / min, and the grinding time is 2.5h. After grinding, press at 510MPa, and sinter at 650°C for 30min in an argon atmosphere. , to be naturally cooled, that is, cemented carbide materials.

Embodiment 2

[0022] A kind of cemented carbide material, comprises the raw material of following weight part:

[0023] 13 parts of titanium carbide, 6 parts of titanium nitride, 5 parts of tantalum carbide, 3 parts of boron carbide, SiC-Al 2 o 3 -Y 2 o 3 32 parts of nanocomposite powder, 18 parts of nickel-based tungsten carbide alloy powder, and 8 parts of Co60 cobalt-based alloy powder.

[0024] The preparation steps of above-mentioned cemented carbide material are as follows:

[0025] Put the above materials into a grinder according to the above proportions for mixing and grinding. The speed of the grinder is 100r / min, and the grinding time is 3h. After grinding, press at 520MPa, and sinter at 700°C for 25min in an argon atmosphere. After natural cooling, the cemented carbide material is obtained.

[0026] The technical parameter of the cemented carbide material that the present invention makes is as follows:

[0027]

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Abstract

The invention discloses a hard alloy material which comprises the following raw materials in parts by weight: 10-15 parts of titanium carbide, 4-7 parts of titanium nitride, 3-5 parts of tantalum carbide, 2-4 parts of boron carbide, 25-35 parts of SiC-Al2O3-Y2O3 nano composite powder, 15-20 parts of nickle-base carbon tungsten alloy powder and 5-8 parts of a metal binder. The hard alloy material has excellent high-temperature resistance and corrosion resistance; and compared with the traditional steel material, the hard alloy material has excellent hardness, heat resistance and oxidation resistance and can improve the high-temperature resistance, toughness and the like of an alloy tool.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a cemented carbide material. Background technique [0002] Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. Cemented carbide has a series of excellent properties such as high hardness, good strength and toughness, heat resistance and corrosion resistance, especially its high hardness and wear resistance, which basically remain unchanged even at a temperature of 500 ° C. It still has high hardness at ℃. However, traditional cemented carbides generally use WC as the hard phase, Co, Ni and other simple substances as the bonding phase, with a single composition, and with the increase of the use temperature, the bonding phase and the hard phase will generally oxidize, resulting in hardness. The hardness and compressive properties of high-quality alloys are reduced, and the service life is shortened. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C32/00B22F3/16B22F9/04
CPCB22F3/16B22F9/04B22F2009/041B22F2999/00C22C30/00C22C32/0005B22F2201/11
Inventor 吴长应
Owner 株洲湘钨超硬材料有限公司
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