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Carbide alloy, carbide bit and manufacturing method thereof

A cemented carbide knife and cemented carbide technology, applied in the field of alloys and cemented carbides, can solve the problems of decreased hardness and strength, poor red hardness, and increased cutting temperature, and achieve improved impact toughness, obvious fracture resistance, and improved hard red effect

Inactive Publication Date: 2005-10-26
河源富马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

[0002] The traditional cutting (cutting) carbide cutter heads, such as YG6, YG8, YT and other grades of cemented carbide cutter heads, are mainly composed of tungsten carbide and cobalt. Poor wear resistance and insufficient strength, etc. Although its application range is wide, it is mainly suitable for the processing of short cutting materials such as non-ferrous metals and low plasticity cast iron.
When cutting steel materials, aluminum alloy materials and medium and high-density fiberboards in the building decoration industry, due to the characteristics of long cutting and continuous cutting, the cutting temperature increases, and when cutting at high temperatures, its hardness and strength drop sharply, which is easy Nodules and crater wear are generated, which seriously affect the wear resistance and service life of the tool material

Method used

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Examples

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Embodiment 1

[0030] A cemented carbide in this embodiment, its main components include tungsten carbide, solid solution formed by tungsten carbide and titanium carbide heated at a high temperature of 2000°C, tantalum carbide, and cobalt, and the ratio of the components calculated by weight percentage is: 16% solid solution, 3.5% tantalum carbide, 6% cobalt, and 74.5% tungsten carbide. The tungsten carbide is tungsten carbide powder with a particle size of 0.4 μm.

Embodiment 2

[0032] A cemented carbide in this embodiment, its main components include tungsten carbide, a solid solution formed by tungsten carbide and titanium carbide heated at a high temperature of 2500°C, tantalum carbide, and cobalt, and the ratio of the components calculated by weight percentage is: 29% solid solution, 8.5% tantalum carbide, 12% cobalt, and 50.5% tungsten carbide. The tungsten carbide is tungsten carbide powder with a particle size of 1.0 μm. The tungsten carbide, tantalum carbide, and solid solution have the largest solubility in cobalt , the cobalt is in the form of α-Co face-centered cubic lattice.

Embodiment 3

[0034] A cemented carbide in this embodiment, its main components include tungsten carbide, solid solution formed by tungsten carbide and titanium carbide heated at a high temperature of 2300°C, tantalum carbide, and cobalt, and the ratio of the components calculated by weight percentage is: 19% solid solution, 5.5% tantalum carbide, 9% cobalt, and 66.5% tungsten carbide. The tungsten carbide is tungsten carbide powder with a particle size of 1.0 μm. The tungsten carbide, tantalum carbide, and solid solution have the largest solubility in cobalt , the cobalt is in the form of α-Co face-centered cubic lattice.

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Abstract

The invention discloses a hard alloy, its main component and proportion is: 50.5-74.5% WC, 3.5 - 8.5% TaC, 6 - 12% Co and WC-TaC solid-solution. The invention also discloses a sawblade made by the hard alloy and the method of its preparation. The merit of the invention is that it increases the solid-solution object and TaC made by WC and TiC at the temperature of 2000 - 2500 deg.C, and use the smaller particles of WC. It meliorates the red hardness, wear resistance and intensity in high temperature of the sawblade. The intensity of the sawblade made in special techniques is 15% more, its rigidity is 5 - 9% more, and toughness is 15 - 30% more than congeneric common sawblades. The ability to resist rupture is 6 times more.

Description

technical field [0001] The present invention relates to an alloy, in particular to a cemented carbide, the invention also relates to a cemented carbide cutter head, and a method for manufacturing the cemented carbide cutter head. Background technique [0002] The traditional cutting (cutting) carbide cutter heads, such as YG6, YG8, YT and other grades of cemented carbide cutter heads, are mainly composed of tungsten carbide and cobalt. Although it has a wide range of applications, it is mainly suitable for the processing of short-cutting materials such as non-ferrous metals and low-plasticity cast iron. When cutting steel materials, aluminum alloy materials and medium and high-density fiberboards in the building decoration industry, due to the characteristics of long cutting and continuous cutting, the cutting temperature increases, and when cutting at high temperatures, its hardness and strength drop sharply, which is easy Nodules and crater wear are generated, and at the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/02
Inventor 王忠平何新江
Owner 河源富马硬质合金股份有限公司
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