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Preparation method of tungsten carbide embedment sample

A technology of tungsten carbide and tungsten carbide powder, which is applied in the field of preparation of tungsten carbide inlaid samples, can solve the problems that it is difficult to reflect the actual performance of tungsten carbide

Inactive Publication Date: 2020-02-21
ZHUZHOU HARD ALLOY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a method for preparing tungsten carbide inlaid samples for the technical problem that the sample detection is difficult to reflect the actual performance of tungsten carbide

Method used

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  • Preparation method of tungsten carbide embedment sample
  • Preparation method of tungsten carbide embedment sample
  • Preparation method of tungsten carbide embedment sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] see figure 1 , the present invention provides a preparation method 10 of a tungsten carbide mosaic sample, the preparation method 10 of the tungsten carbide mosaic sample comprises the following steps:

[0022] S101: Weigh 10 g of ultrafine tungsten carbide powder with a particle size of Fsss of 0.5 μm and 30 g of copper powder with a particle size of 100 mesh, and stir the two powders evenly to form a mixture of tungsten carbide powder and copper powder.

[0023] Specifically, fully mixing the tungsten carbide powder and the copper powder can increase the contact area between the tungsten carbide powder and the copper powder. The gaps between the tungsten carbide powders are filled, and the cooled copper can firmly wrap the tungsten carbide powders, thereby improving the stability of the tungsten carbide powder inlays and facilitating the grinding and polishing of the tungsten carbide inlay samples.

[0024] S102: Prepare a forming agent solution with 5% water, 5% pol...

Embodiment 2

[0038] see figure 2 , the present invention provides a preparation method 20 of a tungsten carbide mosaic sample, the preparation method 20 of the tungsten carbide mosaic sample comprises the following steps:

[0039] S201: Weighing 20 g of tungsten carbide powder with a Fsss particle size of 5 μm and 20 g of copper powder with a particle size of 200 mesh respectively, and stirring the two powders evenly to form a mixture of tungsten carbide powder and copper powder.

[0040] S202: Prepare a forming agent solution with 10% water, 10% polyethylene glycol and 80% ethanol in mass percentage.

[0041] S203: Add a molding agent solution to the mixture of tungsten carbide powder and copper powder at a solid-to-liquid weight ratio of 6:1, and stir evenly to obtain a molding material of tungsten carbide and copper.

[0042] Specifically, add 6.7g of molding solvent to the mixture of tungsten carbide powder and copper powder, and stir the mixture of tungsten carbide powder and copper p...

Embodiment 3

[0048] see image 3 , the present invention provides a preparation method 30 of a tungsten carbide mosaic sample, the preparation method 30 of the tungsten carbide mosaic sample comprises the following steps:

[0049] S301: Weighing 30 g of ultrafine tungsten carbide powder with a particle size of Fsss of 40 μm and 10 g of copper powder with a particle size of 300 mesh, and stirring the two powders evenly to form a mixture of tungsten carbide powder and copper powder.

[0050] Since copper powder is only used to melt and fill the gaps between tungsten carbide powders under heating conditions, its particle size has no effect on the quality of tungsten carbide powders. That is to say, the particle size of the copper powder is not limited to the sizes listed in the embodiments of the present invention, and can be any size on the basis of satisfying the stability of the compacted sample bar of tungsten carbide and copper after drying, and the copper powder The size of the powder ...

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Abstract

The invention discloses a preparation method of a tungsten carbide embedment sample. The preparation method comprises the following steps of respectively weighing an appropriate amount of tungsten carbide powder and an appropriate amount of copper powder, and uniformly mixing the tungsten carbide powder and the copper powder; preparing a formation agent solution comprising 5-10wt% of water, 5-10wt% of polyethylene glycol and 80-90wt% of ethyl alcohol; adding the formation agent solution into a mixed material, and performing uniform stirring to obtain a formation material; performing compression molding on the formation material to obtain a press blank sample strip; performing anaerobic sintering on the press blank sample strip in a sintering furnace; and performing gold-phase sample preparation, sample grinding and polishing on the sintered sample strip to obtain the tungsten carbide embedment sample. According to the preparation method of the tungsten carbide embedment sample, the copper powder and the tungsten carbide powder are mixed and sintered, the tungsten carbide powder is shaped, thus, the cutting difficulty of tungsten carbide is reduced, and single-crystal grain is favorably detected; copper is not fused with tungsten carbide during sintering, the performance reliability of the single-crystal grain is ensured; and the tungsten carbide is embedded and fixed by cooledcopper, poly-crystal grain is difficult to fall off during grinding and polishing, and effective proceeding of tungsten carbide detection operation is ensured.

Description

technical field [0001] The invention relates to the technical field of tungsten carbide powder detection and research, in particular to a method for preparing a tungsten carbide mosaic sample. Background technique [0002] Cemented carbide has the advantages of high hardness, high strength, and good toughness. It is called "industrial teeth" and is widely used in the technical fields of manufacturing cutting tools, knives, cobalt tools, and wear-resistant parts. Tungsten carbide is the key raw material for the preparation of cemented carbide. The performance of tungsten carbide, especially the microscopic properties such as grain size, grain size uniformity, and microscopic appearance, determine the performance of cemented carbide. Therefore, a reliable detection method is adopted Analyzing the microstructure of tungsten carbide helps to evaluate the quality of tungsten carbide, and then optimize the composition and performance of cemented carbide to improve the market compe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/32G01N1/44C22C1/05C22C29/08
CPCC22C1/05C22C29/067C22C29/08G01N1/28G01N1/286G01N1/32G01N1/44G01N2001/2866
Inventor 陆必志张璐王宁施超波谢晨辉
Owner ZHUZHOU HARD ALLOY GRP CO LTD
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