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Preparation method for high-abrasion-resistance hard alloy

A hard alloy, high wear-resistant technology, applied in the field of preparation of high wear-resistant hard alloy, can solve the problems of poor wear resistance and low hardness, and achieve the effect of good wear resistance, high hardness and enhanced wear resistance

Inactive Publication Date: 2016-06-15
河南大地合金有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing high wear-resistant cemented carbide, in order to overcome the defects of low strength, low hardness and poor wear resistance of cutting tools, drilling tools and various wear-resistant parts prepared by ordinary cemented carbide materials.

Method used

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  • Preparation method for high-abrasion-resistance hard alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Select 83 parts of WC powder with a Fischer particle size of 1.2um, 10 parts of Co powder with a Fischer particle size of 0.6, 0.7 parts of B powder, and 0.2 parts of C powder according to the material formula;

[0024] (2) Choose a 1Kg stirring ball mill, first add B powder, C powder and Co powder, add hexane at a ratio of 400ml / kg as the grinding medium, add grinding balls at a ratio of 5:1, and carry out stirring and grinding. The diameter of the grinding ball D7, the stirring speed of the ball mill is 480rpm, the filling factor is 0.65, and the grinding is for 1 hour;

[0025] (3) Then add tungsten carbide and grind for 3 hours to form a slurry to form a slurry;

[0026] (4) Filtration and drying, the mesh number of filtration is 40 mesh, and the drying temperature is 65°C to make cemented carbide mixture particles;

[0027] (5) Molding, extrusion or injection molding of cemented carbide mixture particles to make cemented carbide blanks;

[0028] (6) Put the c...

Embodiment 2

[0030] (1) Select 90 parts of WC powder with a Fischer particle size of 2.0um, 17 parts of Co powder with a Fischer particle size of 1.0um, 1.0 parts of B powder, and 1.0 parts of C powder according to the material formula;

[0031] (2) Choose a 1Kg stirring ball mill, first add B powder, C powder and Co powder, add hexane at a ratio of 400ml / kg as the grinding medium, add grinding balls at a ratio of 5:1, and carry out stirring and grinding. The diameter of the grinding ball D7, the stirring speed of the ball mill is 480rpm, the filling factor is 0.65, and the grinding is for 1 hour;

[0032] (3) Then add tungsten carbide and grind for 3 hours to form a slurry to form a slurry;

[0033] (4) Filtration and drying, the mesh number of filtration is 50 mesh, and the drying temperature is 95°C to make cemented carbide mixture particles;

[0034] (5) Molding, extrusion or injection molding of cemented carbide mixture particles to make cemented carbide blanks;

[0035] (6) Put the...

Embodiment 3

[0037] (1) Select 88 parts of WC powder with a Fischer particle size of 1.5um, 15 parts of Co powder with a Fischer particle size of 0.8um, 0.8 parts of B powder, and 0.5 parts of C powder according to the material formula;

[0038] (2) Choose a 1Kg stirring ball mill, first add B powder, C powder and Co powder, add hexane at a ratio of 400ml / kg as the grinding medium, add grinding balls at a ratio of 5:1, and carry out stirring and grinding. The diameter of the grinding ball D7, the stirring speed of the ball mill is 480rpm, the filling factor is 0.65, and the grinding is for 1 hour;

[0039] (3) Then add tungsten carbide and grind for 3 hours to form a slurry to form a slurry;

[0040] (4) Filtration and drying, the mesh number of filtration is 45 mesh, and the drying temperature is 80°C to make cemented carbide mixture particles;

[0041] (5) Molding, extrusion or injection molding of cemented carbide mixture particles to make cemented carbide blanks;

[0042] (6) Put the...

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Abstract

The invention discloses a method for preparing high wear-resistant cemented carbide. The parts by weight of each component in the raw material are: 83-90 parts of WC powder with a Fisher particle size of 1.2-2.0 μm, and a Fisher particle size of 0.6-1.0 μm Co powder 10-17 parts, B powder 0.7-1.0 parts, C powder 0.2-1.0 parts; the process steps of the high wear-resistant cemented carbide are: (1) select each material component; First add B powder, C powder and Co powder for stirring and grinding; (3) Then add tungsten carbide for grinding; (4) Filtration and drying; (5) Molding or extrusion or injection molding; (6) Sintering molding The sintering temperature is 1400-1425° C., the Ar pressure is 8-10 MPa, and the sintering time is 30-100 min. Practice has proved that the service life of the high wear-resistant cemented carbide of the present invention is 2 to 3 times that of ordinary cemented carbide.

Description

technical field [0001] The invention relates to the technical field of hard alloy material manufacture, in particular to a preparation method of high wear-resistant hard alloy. Background technique [0002] Printed circuit board (PCB~Printed Circuit Board) is an indispensable basic component of all electronic information products, and it is also the product with the highest market share in the global electronic component products. The miniaturization of components mounted on the printed circuit board (PCB) of mobile phones, notebook computers and other products not only promotes the development of miniaturization of printed circuit boards, but also promotes the fine circuit patterns of printed circuit boards. . [0003] Vias are one of the important components of PCB, and their functions are the electrical connection channels between layers and the fixing or positioning holes of devices. Mechanical drilling with PCB micro-drilling is the most commonly used processing method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/08C22C1/05B22F1/00
Inventor 李锦昆谢峰
Owner 河南大地合金有限公司
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