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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, can solve the problems affecting the wear resistance and service life of tool materials, insufficient wear resistance and strength, incision and crater wear, etc., to achieve good toughness, The effect of improving red hardness and overcoming deficiencies

Inactive Publication Date: 2008-09-17
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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Effect test

Embodiment 1

[0032] A kind of cemented carbide of this embodiment contains 87.49% of tungsten carbide, 3.63% of tantalum carbide, 6.3% of cobalt, 2.08% of tungsten carbide-titanium carbide-tantalum carbide solid solution and tungsten carbide- Chromium solid solution 0.5%. The tungsten carbide-titanium carbide-tantalum carbide solid solution is made by direct carbonization of tungsten carbide, carbon, titanium dioxide, and tantalum carbide at a high temperature of 2000 ° C. The components contained in the solid solution are calculated by weight percentage The ratio is: 30% titanium carbide, 1.2% tantalum carbide, and the rest is not tungsten carbide; the tungsten carbide-chromium solid solution is made of tungsten, carbon, and chromium oxide at a high temperature of 1400 ° C, and the Cr 2 o 3 The oxide formed by ammonium dichromate blasting at high temperature is reduced to Cr after the solid solution is produced at high temperature. The proportion of the components contained in the solid s...

Embodiment 2

[0034] A kind of cemented carbide of the present embodiment contains 92.70% of tungsten carbide, 1.2% of tantalum carbide, 4.2% of cobalt, 1.5% of tungsten carbide-titanium carbide-tantalum carbide solid solution and tungsten carbide- Chromium solid solution 0.4%. The tungsten carbide-titanium carbide-tantalum carbide solid solution is made by direct carbonization of tungsten carbide, carbon, titanium dioxide, and tantalum carbide at a high temperature of 2300 ° C. The components contained in the solid solution are calculated by weight percentage The ratio is: titanium carbide 5%, tantalum carbide 3.63%, and the rest is not tungsten carbide; the tungsten carbide-chromium solid solution is made of tungsten, carbon, and chromium oxide at a high temperature of 1450°C, and the Cr 2 o 3 The oxide formed by ammonium dichromate blasting at high temperature is reduced to Cr when the solid solution is produced at high temperature. The proportion of the components contained in the solid...

Embodiment 3

[0036] A kind of cemented carbide of the present embodiment contains 91.69% of tungsten carbide, 1.63% of tantalum carbide, 5.3% of cobalt, 0.93% of tungsten carbide-titanium carbide-tantalum carbide solid solution and tungsten carbide- Chromium solid solution 0.45%. The tungsten carbide-titanium carbide-tantalum carbide solid solution is made by direct carbonization of tungsten carbide, carbon, titanium dioxide, and tantalum carbide at a high temperature of 2100 ° C. The components contained in the solid solution are calculated by weight percentage The ratio is: 20% titanium carbide, 2.5% tantalum carbide, and the rest is not tungsten carbide; the tungsten carbide-chromium solid solution is made of tungsten, carbon, and chromium oxide at a high temperature of 1410°C, and the Cr 2 o 3 The oxide formed by ammonium dichromate blasting at high temperature is reduced to Cr when the solid solution is produced at high temperature. The proportion of the components contained in the so...

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Abstract

The invention discloses a hard alloy, its main component and proportion by weights is: 87.49 - 92.70% WC, 1.2 - 3.63% TaC, 4.2 - 6.3% Co, 0.9 - 2.38% solid-solution object of WC-TiC-TaC and 0.4 - 0.5 solid-solution object of WC-Cr. The invention also discloses a sawblade made by the hard alloy and the method of its preparation. The merit of the invention is: It increases the solid-solution object which is formed by WC and TiC at the temperature of 2000 - 2300 deg. C and TaC. It also uses the smaller particles of the powder of WC. It meliorates the red hardness, wear resistance and intensity in high temperature of the sawblade.

Description

technical field [0001] The invention relates to an alloy, in particular to a hard alloy. The invention also relates to a cutter head made of such cemented carbide, and a production method of the 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 same time, the wear r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/02C22C1/00B22F3/16
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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