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A kind of preparation method of wear-resistant tungsten alloy material

A tungsten alloy and formula technology, applied in the field of alloy material manufacturing, can solve problems such as shortening the life of PCB drill bits and tool wear

Active Publication Date: 2018-02-09
山西海德拉太矿国际采矿刀具设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The life of a conventional PCB drill bit is 2000-3000 holes, but as modern electrical appliances become more and more intelligent and miniaturized, the manufacturing technology of printed circuit boards with thin wires and narrow spacing is developing rapidly, and new materials for PCB boards are also getting faster and faster. It is getting harder and harder, because there are many strong materials in the material, the thermal conductivity of the material is low, and the processing speed is getting higher and higher. During the processing, more and more heat will be generated, which will accelerate the wear of the tool and make the PCB The life of the drill bit is greatly shortened. According to statistics, the main failure mode of the PCB drill bit is wear and fracture, which requires the material performance of the micro-drill bit for processing printed circuit board PCB holes to develop in the direction of higher strength, hardness, and wear resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The tungsten alloy material matrix of the present embodiment is made up of following weight components: 90 parts of WC powders with a Fischer particle size of 1-1.5um, 8 parts of Co powders with a Fischer particle size of 0.5-0.8um, 1 part of B powder, graphite powder 0.5 servings.

[0019] Select each material component according to the above-mentioned material formula.

[0020] Choose a 1Kg stirring ball mill, first add B powder, graphite powder and Co powder, add amyl alcohol at a ratio of 500ml / 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 is D7. The stirring speed is 480 rpm, the filling factor is 0.85, and the grinding is performed for 1 hour.

[0021] Then add tungsten carbide and grind for 5 hours to form a slurry.

[0022] Filtration and drying, the mesh number of filtration is 40 mesh, and the drying temperature is 70° C., to make cemented carbide mixture particles.

...

Embodiment 2

[0027] The tungsten alloy material matrix of the present embodiment is made up of following weight components: 95 parts of WC powders with a Fischer particle size of 1-1.5um, 12 parts of Co powder with a Fischer particle size of 0.5-0.8um, 2 parts of B powder, graphite powder 1 serving.

[0028] Select each material component according to the above-mentioned material formula.

[0029] Choose a 1Kg stirring ball mill, first add B powder, graphite powder and Co powder, add amyl alcohol at a ratio of 500ml / 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 is D7. The stirring speed is 480 rpm, the filling factor is 0.85, and the grinding is performed for 1 hour.

[0030] Then add tungsten carbide and grind for 7 hours to form a slurry.

[0031] Filtration and drying, the mesh number of the filtration is 50 mesh, and the drying temperature is 85° C. to make cemented carbide mixture particles.

...

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Abstract

The invention discloses a preparation method for a wear-resisting tungsten alloy material. A matrix of the tungsten alloy material is prepared from, by weight, 90-95 parts of WC powder with the Fisher particle size ranging from 1 micrometer to 1.5 micrometers, 8-12 parts of Co powder with the Fisher particle size ranging from 0.5 micrometer to 0.8 micrometer, 1-2 parts of B powder and 0.5-1 part of graphite powder. According to the tungsten alloy material prepared through the method, the aim of remarkably improving and controlling the structure of the material can be achieved, the strength and hardness of the prepared tungsten alloy material can be perfectly matched, and the comprehensive performance is excellent.

Description

technical field [0001] The invention relates to the field of alloy material manufacturing, in particular to a preparation method of a wear-resistant tungsten alloy material. Background technique [0002] Cemented carbide has the characteristics of high strength, high hardness, excellent wear resistance, heat resistance and good corrosion resistance, so it is widely used in high pressure, high speed, high temperature, corrosive media and other working environments [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. The life of a conventional PCB drill bit is 2000-3000 holes, but as modern electrical appliances become more and more intelligent and miniaturized, the manufacturing technology of printed circuit boards with thin wires and narrow spacing is developing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C29/08C22C1/05B23K10/02
CPCB23K10/027C22C1/051C22C29/005C22C29/067C22C29/08
Inventor 杜万清
Owner 山西海德拉太矿国际采矿刀具设备有限公司
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