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Hard alloy raw material and method for preparing hard alloy cutter material through hard alloy raw material

A technology of cemented carbide and tool materials, which is applied in the field of cemented carbide raw materials and its preparation of cemented carbide tool materials, can solve the problems of complex preparation process, high cost and expensive equipment of multi-layer multi-layer gradient composite coatings. Achieve the effect of shortening the production cycle, reducing the preparation time and reducing the time of ball milling

Inactive Publication Date: 2016-11-09
LINGNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of multi-layer multi-element gradient composite coating is relatively complicated, and the equipment is expensive, resulting in high cost and difficult to widely popularize.

Method used

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  • Hard alloy raw material and method for preparing hard alloy cutter material through hard alloy raw material
  • Hard alloy raw material and method for preparing hard alloy cutter material through hard alloy raw material
  • Hard alloy raw material and method for preparing hard alloy cutter material through hard alloy raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Each component of cemented carbide raw material and the content of each component are as follows (total weight: 100g)

[0026] components

Tungsten carbide

cobalt powder

Molybdenum powder

Titanium carbide

Titanium nitride

Weight (g)

86

10

1.0

2.5

0.5

weight percentage (%)

86

10

1.0

2.5

0.5

[0027] Among them, the particle size of tungsten carbide, cobalt powder, molybdenum powder, titanium carbide and titanium nitride are all 0.5-2.0um, and the purity is over 99.9%.

[0028] Prepare cemented carbide cutter material with above-mentioned cemented carbide raw material, the step of preparation method is as follows:

[0029] a. Add the above-mentioned cemented carbide raw materials into a grinding tank, add cemented carbide grinding balls, mix in 1-3wt.% paraffin, inject carbon tetrachloride, ball mill for 48 hours, and then dry;

[0030] b. Sieve the dried powder;

[0031] c, dry pressed into ...

Embodiment 2

[0037] Each component of cemented carbide raw material and the content of each component are as follows (total weight: 100g)

[0038] components

Tungsten carbide

cobalt powder

Molybdenum powder

Titanium carbide

Titanium nitride

Weight (g)

87

9

1.0

0.5

2.5

weight percentage (%)

87

9

1.0

0.5

2.5

[0039] Among them, tungsten carbide, cobalt powder, nickel powder, molybdenum powder, vanadium carbide, chromium carbide, titanium carbide, silicon carbide, and carbon nitride all have a particle size of 0.8-1.0um and a purity of over 99.9%.

[0040] Prepare cemented carbide cutter material with above-mentioned cemented carbide raw material, the step of preparation method is as follows:

[0041] a. Add the above-mentioned cemented carbide raw materials into a grinding tank, add cemented carbide grinding balls, mix in 1-3wt.% paraffin, inject carbon tetrachloride, ball mill for 48 hours, and then dry;

[0042...

Embodiment 3

[0049] Each component of cemented carbide raw material and the content of each component are as follows (total weight: 100g)

[0050] components

Tungsten carbide

cobalt powder

Molybdenum powder

Titanium carbide

Titanium nitride

Weight (g)

88

8

1.0

1.5

1.5

weight percentage (%)

88

8

1.0

1.5

1.5

[0051] Among them, tungsten carbide, cobalt powder, nickel powder, molybdenum powder, vanadium carbide, chromium carbide, titanium carbide, silicon carbide, and carbon nitride all have a particle size of 0.8-1.0um and a purity of over 99.9.

[0052] Prepare cemented carbide cutter material with above-mentioned cemented carbide raw material, the step of preparation method is as follows:

[0053] a. Add the above-mentioned cemented carbide raw materials into a grinding tank, add cemented carbide grinding balls, mix in 1-3wt.% paraffin, inject carbon tetrachloride, ball mill for 48 hours, and then dry;

[0054]...

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Abstract

The invention relates to the field of hard alloy materials, in particular to a hard alloy raw material and a method for preparing a hard alloy cutter material through the hard alloy raw material. The hard alloy raw material comprises, by weight percentage, 80% to 90% of tungsten carbide, 6%-12% of cobalt powder, 0%-5% of titanium carbide, 0%-5% of titanium nitride and 0%-0.5% of microelements. The grain distribution of raw material powder ranges from 0.5 micrometer to 2 micrometers. The method for preparing the hard alloy cutter material through the hard alloy raw material includes the steps of powder mixing, ball milling, drying, sieving, block pressing, presintering, high-temperature vacuum sintering and high-temperature nitrogen sintering. The hard alloy cutter material prepared through the method is low in manufacturing cost, high in hardness, good in wear resistance and high in film-substrate cohesion, and the surface has the gold or reddish brown appearance; and the relative density of the hard alloy cutter material prepared through the method is higher than 99%, the hardness ranges from 20 GPa to 28 GPa, the breakage toughness ranges from 6 MPa.m<1 / 2> to 8 MPa.m<1 / 2>, and the film-substrate cohesion critical load obtained through a scratch method test is larger than 80 N.

Description

technical field [0001] The invention relates to a cemented carbide raw material and a method for preparing the cemented carbide tool material, in particular to a tungsten carbide-based cemented carbide raw material whose surface is rich in Ti-based hard phases through in-situ chemical reaction and its preparation method. Background technique [0002] Cemented carbide is made of high hardness and refractory metal carbide powder (WC, TiC, TiCN, VC, Cr 3 C 2 , TaC, ZrC, etc.) as the main phase, an alloy material that is sintered at high temperature with transition metals cobalt (Co), nickel (Ni), molybdenum (Mo), iron (Fe), etc. as the binder phase. Cemented carbide is mostly prepared by metal powder metallurgy technology and high temperature liquid phase sintering. Cemented carbide has many excellent properties such as high strength, high hardness, and high toughness, so it is widely used in fields such as cutting, drilling, mining, tool forming, and wear-resistant parts [7...

Claims

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Application Information

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IPC IPC(8): C22C29/08C22C29/02C22C1/05
CPCC22C29/08C22C1/053C22C29/02
Inventor 弓满锋梅芳隋广洲连海山莫德云
Owner LINGNAN NORMAL UNIV
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