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A kind of preparation method of cemented carbide cutting tool material

A technology of cemented carbide and cutting tools, which is applied in the field of preparation of materials for cemented carbide cutting tools, can solve the problems of affecting cutting quality, sharpness and toughness of the knife edge, poor wear resistance, etc., achieve good cutting effect, small cutting resistance, reduce grossly wasted effect

Active Publication Date: 2016-08-24
技锋精密刀具(马鞍山)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems in the prior art that the edge of the cemented carbide slitting knife is blunt and has poor wear resistance, or the edge is sharp but poor in toughness, which seriously affects the cutting quality and the service life of the tool, and causes waste of resources, the present invention provides a cemented carbide Preparation method of material for slitting cutter

Method used

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  • A kind of preparation method of cemented carbide cutting tool material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 Shown, a kind of preparation method of cemented carbide cutting tool material, comprises the steps:

[0046] (1) The diameters of selected specifications are 10.5cm, 9.5cm, 8.5cm, 7.3cm, 5.5cm, the heights are 17cm, 16.7cm, 16.3cm, 15.6cm, 14.4cm, and the mass ratios are 3%, 33%, 1200Kg of 32.5%, 16%, and 15.5% ground baseballs are added to the 300L tiltable wet mill manufactured by Hunan Xiangtan Gaosheng Powder Equipment Co., Ltd.

[0047] (2) Select tungsten carbide with a particle size of 0.9 μm and 4.5 μm, spherical cobalt powder of 1.0 μm, and chromium carbide of 1.0 μm according to the mass ratio of 56:24:19.3:0.7 to form a 300Kg raw material input step (1) The wet mill is used for mixing.

[0048] (3) Ethanol with a concentration ≥ 98% is directly added to the wet mill described in step (2) as a grinding medium, and the volume of ethanol is 66L.

[0049] (4) Wet grinding the mixed material processed through the above steps.

[0050] (5) Sele...

Embodiment 2

[0056] Such as figure 1 Shown, a kind of preparation method of cemented carbide cutting tool material, comprises the steps:

[0057] (1) Use 1200Kg of grinding baseballs with a diameter of 5.5cm and a height of 14.4cm, and add them to the 300L tiltable wet mill manufactured by Hunan Xiangtan Gaosheng Powder Equipment Co., Ltd.

[0058] (2) select particle size as tungsten carbide of 0.6 μm and 3 μm, spherical cobalt powder of 1.0 μm, and chromium carbide of 1.0 μm according to the ratio of mass ratio of 64:16:19.3:0.7 to be made into 300Kg raw material input step (1) The wet mill described above was used for mixing.

[0059] (3) Ethanol with a concentration ≥ 98% is directly added to the wet mill described in step (2) as a grinding medium, and the volume of ethanol is 66L.

[0060] (4) Wet grinding the mixed material processed through the above steps.

[0061] (5) Select a 400-mesh stainless steel screen to sieve the wet abrasive slurry.

[0062] (6) Put the slurry process...

Embodiment 3

[0067] Such as figure 1 Shown, a kind of preparation method of cemented carbide cutting tool material, comprises the steps:

[0068] (1) Use 1300Kg of grinding baseballs with a diameter of 7.3cm and a height of 15.6cm, and add them to the 300L tiltable wet mill manufactured by Hunan Xiangtan Gaosheng Powder Equipment Co., Ltd.

[0069] (2) Select tungsten carbide with particle size of 0.7 μm and 3.5 μm, spherical cobalt powder of 1.5 μm, and chromium carbide of 1.5 μm according to the mass ratio of 76.5:8.5:14.5:0.5 to make 300Kg of raw materials into step (1) The wet mill is used for mixing.

[0070] (3) Ethanol with a concentration ≥ 98% is directly added to the wet mill described in step (2) as a grinding medium, and the volume of ethanol is 72L.

[0071] (4) Wet grinding the mixed material processed through the above steps.

[0072] (5) Select a 400-mesh stainless steel screen to sieve the wet abrasive slurry.

[0073] (6) Put the slurry processed in step (5) into the ...

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Abstract

The invention discloses a preparation method of a material for a hard alloy slitting tool and belongs to the technical field of hard alloy materials for mechanical paper cutting tools. The method comprises the following steps: selecting high-purity raw wolfram carbides (WC) of which the granularities are 0.6-1.0 micron and 3.0-6.0 microns respectively, high-purity spherical cobalt powder of which the granularity is 1.0-2.0 microns and a chromium carbide of which the granularity is 1.0-2.0 microns are selected; performing a series of processes such as mixing, wet-grinding, filtering, drying and compression molding on the wolfram carbides, the spherical cobalt powder and the chromium carbide, and sintering the wolfram carbides, the spherical cobalt powder and the chromium carbide by using a common vacuum sintering integrated furnace to obtain a novel material for the hard alloy slitting tool, wherein the mass ratio of the wolfram carbides is 80-90 percent, the mass ratio of the spherical cobalt powder is 10-20 percent, and the mass ratio of the chromium carbide is 0.35-0.7 percent. The material prepared by using the method is a special combination structure material, and by virtue of a product manufactured by using the method, the slitting tool is good in cutting effect and long in service life in a severer environment.

Description

technical field [0001] The invention relates to the field of cemented carbide materials for slitting cutters of paper-cutting machines, and more specifically, relates to a preparation method of materials for slitting cutters of cemented carbides. Background technique [0002] With the rapid development of industrial technology, cemented carbide tool materials have rapidly penetrated into all aspects of industrial production, gradually replacing the original high-speed steel materials, and have shown unparalleled excellent performance. In order to cater to the knives of the paper processing industry, the traditional slitting tool materials are changed from high-speed steel materials to hard alloy materials. The main component of cemented carbide is tungsten carbide (WC), generally cobalt is used as the bonding phase, and it is produced by powder metallurgy, which has high wear resistance and strength. Its high wear resistance increases its service life by 10 to 30 times, gre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C1/10
Inventor 陈爱华李光明杨智凯邓敬新
Owner 技锋精密刀具(马鞍山)有限公司
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