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Ultra-fine grain hard alloy and preparation method thereof

A technology of hard alloy and ultra-fine grain, applied in the field of ultra-fine grain hard alloy and its preparation, can solve the problems of unstable quality, long mold occupation time, low production efficiency, etc., and achieve short production cycle and high hardness Good, stable quality effect

Pending Publication Date: 2020-07-17
株洲鑫品硬质合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultra-fine-grained cemented carbide is characterized by high hardness, good thermal hardness, and excellent wear resistance. The cutting speed can be increased by 4-7 times compared with high-speed steel. When used as a tool material, its wear resistance is 15-20 times that of high-speed steel. The service life can be increased by 5-80 times, but the quality of the ultra-fine-grained cemented carbide in the prior art is unstable and cannot meet the market demand. At the same time, it takes a long time for the mold and the production efficiency is low

Method used

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Embodiment Construction

[0016] The present invention provides an ultra-fine-grain cemented carbide and a preparation method thereof. Those skilled in the art can refer to the content of this article and appropriately improve the process parameters to realize it. In particular, it should be pointed out that all similar substitutions and modifications are obvious to those skilled in the art, and they all belong to the protection scope of the present invention. The method and application of the present invention have been described through preferred embodiments, and relevant personnel can obviously make changes or appropriate changes and combinations to the method and application herein without departing from the content, spirit and scope of the present invention to realize and apply the present invention Invent technology.

[0017] A kind of superfine grain cemented carbide, the components contained in its material and the mass percentage of each component are as follows:

[0018] Ultrafine tungsten c...

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PUM

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Abstract

The invention discloses an ultra-fine grain hard alloy and a preparation method thereof. The ultra-fine grain hard alloy comprises the following components in percentage by mass: 96.5% of ultra-fine grain tungsten carbide, 2.5% of ultra-fine spherical cobalt powder, 0.5% of tantalum carbide and 0.5% of chromium carbide, wherein the Fisher particle size of the ultra-fine grain tungsten carbide is 0.4-0.6 mu m; the Fisher particle size of the ultra-fine spherical cobalt powder is 0.8-1.2 mu m; the Fisher particle size of the tantalum carbide is 1.0-2.0 mu m; and the Fisher particle size of the chromium carbide is 2.0-2.5 mu m. The ultra-fine grain hard alloy has the advantages of high strength, high hardness, favorable wear resistance and long service life.

Description

technical field [0001] The invention relates to an ultrafine grain hard alloy and a preparation method thereof. Background technique [0002] At present, with the development of science and technology and industry, higher requirements are put forward for materials, such as higher strength, high temperature resistance, high pressure, low temperature, corrosion resistance, wear resistance and other special physical and chemical properties. Ultra-fine-grained cemented carbide is characterized by high hardness, good thermal hardness, and excellent wear resistance. The cutting speed can be increased by 4-7 times compared with high-speed steel. When used as a tool material, its wear resistance is 15-20 times that of high-speed steel. The service life can be increased by 5-80 times, but the quality of the ultra-fine-grained cemented carbide in the prior art is not stable and cannot meet the needs of the market. At the same time, it takes a long time for the mold and has low product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08C22C1/05
CPCC22C1/051C22C29/067C22C29/08
Inventor 邹扬名
Owner 株洲鑫品硬质合金股份有限公司