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Boron carbide lathe tool comprising tool rest

A technology of boron carbide turning and cubic boron carbide, which is applied in the accessories of tool holders, turning equipment, tools for lathes, etc. and improved heat resistance, good effect and strong hardness

Inactive Publication Date: 2014-05-21
LIYANG JIANGDA TECH TRANSFER CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using cemented carbide and ceramic tools to process high hardness materials, there will be defects such as insufficient hardness and poor wear resistance, which will affect the service life and make it difficult to meet the processing requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] The turning tool includes a tool and a tool holder. The material of the tool holder is a nickel-based alloy. The tool is composed of 85% by weight, cubic boron carbide micropowder with a particle size of 6 μm, 0.5% by weight, and 99.6% purity of microcrystalline powdery boron, 5% by weight, and 5% by weight. It consists of microcrystalline powdery silicon dioxide with a purity of 99.8% by weight and 9.5% by weight of carbon having a diamond structure.

[0010] Use the following production methods:

[0011] a. Put the nickel base alloy knife holder into the graphite mold;

[0012] b. Put the tool material into the graphite mold with the knife holder, and the graphite mold is sealed by graphite;

[0013] c. Put the mold into the ultra-high pressure synthesis cavity to form an ultra-high pressure assembly block;

[0014] d. Pressurize the tool material to 13Gpa and heat it to 1800°C for 140 seconds.

Embodiment 2

[0016] The turning tool includes a tool and a tool holder. The material of the tool holder is ceramics. The tool is made of 80% by weight of cubic boron carbide micropowder with a particle size of 5 μm, 2% by weight of boron with a purity of 99.9% microcrystalline powder, 8% by weight, Microcrystalline powdery silicon dioxide with a purity of 99.9%, 10% by weight of carbon having a diamond structure.

[0017] Use the following production methods:

[0018] a. Put the ceramic knife holder into the graphite mold;

[0019] b. Put the tool material into the graphite mold with the knife holder, and the graphite mold is sealed by graphite;

[0020] c. Put the mold into the ultra-high pressure synthesis cavity to form an ultra-high pressure assembly block;

[0021] d. Pressurize the tool material to 13.5Gpa and heat it to 1900°C for 130 seconds.

Embodiment 3

[0023] The turning tool includes a tool and a tool holder. The material of the tool holder is a nickel-based alloy. The tool is composed of 85% by weight, cubic boron carbide micropowder with a particle size of 6 μm, 0.5% by weight, and 99.6% purity of microcrystalline powdery boron, 5% by weight, and 5% by weight. It consists of microcrystalline powdery silicon dioxide with a purity of 99.8% by weight and 9.5% by weight of carbon having a diamond structure.

[0024] Use the following production methods:

[0025] a. Put the nickel base alloy knife holder into the graphite mold;

[0026] b. Put the tool material into the graphite mold with the knife holder, and the graphite mold is sealed by graphite;

[0027] c. Put the mold into the ultra-high pressure synthesis cavity to form an ultra-high pressure assembly block;

[0028] d. Pressurize the tool material to 12Gpa and heat it to 1700°C for 140 seconds.

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Abstract

The invention discloses a boron carbide lathe tool comprising a tool rest. The lathe tool is high in hardness and good in abrasion resistance and heat resistance. The lathe tool comprises the tool rest and a tool arranged on the tool rest, wherein the tool consists of 75wt%-85wt% of cubic boron carbide micro powder with particle sizes of 1-10 mum, 0.5wt%-3wt% of microcrystal-powder-shaped boron with the purity above 99.5%, 5wt%-10wt% of microcrystal-powder-shaped silicon dioxide with the purity above 99.5% and 6wt%-15wt% of carbon adopting a diamond structure.

Description

technical field [0001] The invention relates to a superhard cutting tool. Background technique [0002] With the continuous development of modern processing technology, the hardness and strength of processed materials are also continuously improving. When using cemented carbide and ceramic tools to process high-hardness materials, there will be defects such as insufficient hardness and poor wear resistance, which will affect the service life and make it difficult to meet the processing requirements. Cubic boron carbide has hardness and thermal conductivity close to that of diamond and has excellent properties of lower reaction ability with ferrous metal than diamond. Therefore, when processing ferrous metal with high hardness, it is hoped to use tools containing this material for processing. The use of this material can greatly improve the hardness, heat resistance and wear resistance of the tool. Contents of the invention [0003] The object of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/00
CPCB23B27/14
Inventor 张翠
Owner LIYANG JIANGDA TECH TRANSFER CENT