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Diamond coating cutter, and preparation method and application thereof in high speed graphite processing

A diamond coating and cutting tool technology, which is applied in the field of mechanical processing, can solve problems such as tool wear, no significant increase in service life, and difficulty in meeting complex electrode requirements for tool shapes, so as to overcome friction and wear, improve cutting performance, and ensure stability. Effect

Active Publication Date: 2016-05-11
GUANGDONG UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Cemented carbide tools have serious tool wear when milling graphite at high speed. It is necessary to check the tool wear condition in time and replace the tool frequently. It has limited application in large-size or precision electrode processing. The service life of TiAlN-coated tools has not been significantly improved when processing graphite. Polycrystalline diamond Tool wear is small, but the shape of the tool is difficult to meet the requirements of complex electrodes

Method used

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  • Diamond coating cutter, and preparation method and application thereof in high speed graphite processing
  • Diamond coating cutter, and preparation method and application thereof in high speed graphite processing
  • Diamond coating cutter, and preparation method and application thereof in high speed graphite processing

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 , figure 2 As shown, the present invention discloses a diamond-coated tool, comprising a cutting tip 1, a blade 2 and a clamping handle 3, the clamping handle 3 is a cemented carbide substrate, and the cutting tip 1 and the blade 2 are in the The base material is coated with a diamond coating. The matrix material of the cutting tip 1 and the cutting edge 2 is tungsten carbide cemented carbide, wherein the mass percentage of cobalt is not more than 6%; the proportion of vanadium carbide or titanium carbide or other mixtures is not higher than 1%. The thickness of the diamond coating is 7-20 μm. The cutting tip 1 is provided with a number of dust flutes 4 along the cutting direction, which facilitates the effective dischar...

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Abstract

The invention discloses a diamond coating cutter, and a preparation method and the application thereof in high speed graphite processing. The diamond coating cutter comprises a cutter tip, a blade and a clamping cutter holder, wherein the clamping cutter holder is made of a hard alloy matrix, the cutter tip and the blade are coated with diamond coatings on matrix materials, the diamond coating cutter is characterized in that the end cutting edge front angle gamma o1 of the blade is 2 to 6 degrees, the end cutting edge rear angle alpha 1 is 5 to 13 degrees, the peripheral cutting edge front angle gamma o2 is 5 to 15 degrees, the peripheral cutting edge rear angle alpha 2 is 10 to 14 degrees, and the helical angle beta is 15 to 45 degrees. The diamond coating cutter provided by the invention has the characteristics of high hardness, wear resistance, low friction coefficient, good heat conduction and the like, is suitable for high speed graphite processing, can effectively overcome frictional wear caused by graphite dust to the surface of the cutter, and is classified as an ideal cutter for cutting graphite.

Description

technical field [0001] The invention relates to the field of machining, in particular to a diamond-coated tool, its preparation method and its application in high-speed machining of graphite. Background technique [0002] Isotropic cold isostatic graphite has better mechanical and physical properties than ordinary molded graphite. Its particles have no preferred orientation, so its strength and conductivity are consistent in all directions. It is one of the fastest-growing industrial materials in the world today. Isotropic graphite has the advantages of high high temperature strength, low thermal expansion coefficient, good processability, good thermal and electrical conductivity, high temperature resistance, stable chemical properties, plasticity, and good thermal shock resistance. Widely used in mold EDM electric spark discharge, solar graphite thermal field, metallurgy, machinery, construction, electrical, electronics, aerospace, nuclear industry, non-ferrous and precious...

Claims

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Application Information

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IPC IPC(8): B28D1/18C23C16/27C23C16/48
CPCB28D1/186C23C16/271
Inventor 王成勇周玉海郑李娟王启民代伟
Owner GUANGDONG UNIV OF TECH
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