Plate-shaped tungsten carbide-cobalt alloy and preparation method thereof

A tungsten carbide and cobalt alloy technology, applied in the field of materials, can solve problems such as difficult control of carbon content, uneven particle size distribution of plate-shaped tungsten carbide-cobalt alloy, and restrictions on the industrial application of plate-shaped tungsten carbide-cobalt alloy

Active Publication Date: 2019-01-25
CHONGYI ZHANGYUAN TUNGSTEN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the related art, the method for preparing plate-shaped tungsten carbide-cobalt alloy has the problems that the carbon content is difficult to control and the particle size distribution of the prepared plate-shaped t...

Method used

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  • Plate-shaped tungsten carbide-cobalt alloy and preparation method thereof
  • Plate-shaped tungsten carbide-cobalt alloy and preparation method thereof
  • Plate-shaped tungsten carbide-cobalt alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0051] Method for preparing plate-shaped tungsten carbide-cobalt alloy

[0052] Add 100g of tungsten powder with a particle size of 5 μm into a ball milling tank for flattening treatment. Wet ball milling is used, with alcohol as the ball milling medium, the ball to particle ratio is 10:1, the ball milling speed is 250r / min, and the ball milling time is 36h. After ball milling, a vacuum drying oven was used for drying at a drying temperature of 60°C and a drying time of 8 hours.

[0053] Add the flattened tungsten powder, superfine WC-Co powder, cobalt powder, carbon black and paraffin into the ball mill according to the stoichiometric ratio that the mass percentage of cobalt in the formed plate-shaped tungsten carbide-cobalt alloy is 10%. Mix in tank. Among them, the mass percentage of ultra-fine WC-Co powder is 5%, and the particle size is 0.4 μm; the particle size of cobalt powder is 0.85 μm, the particle size of carbon black is 0.3um, and the amount of carbon black added ...

Embodiment 2

[0057] Method for preparing plate-shaped tungsten carbide-cobalt alloy

[0058] Add 100g of tungsten powder with a particle size of 5 μm into a ball milling tank for flattening treatment. Wet ball milling is used, with alcohol as the ball milling medium, the ball to particle ratio is 10:1, the ball milling speed is 250r / min, and the ball milling time is 36h. After ball milling, a vacuum drying oven was used for drying at a drying temperature of 60°C and a drying time of 8 hours.

[0059] Add the flattened tungsten powder, superfine WC-Co powder, cobalt powder, carbon black and paraffin into the ball mill according to the stoichiometric ratio that the mass percentage of cobalt in the formed plate-shaped tungsten carbide-cobalt alloy is 10%. Mix in tank. Among them, the mass percentage of ultrafine WC-Co powder is 10%, and the particle size is 0.4 μm; the particle size of cobalt powder is 0.85 μm, and the particle size of carbon black is 0.3 μm, and the amount of carbon black a...

Embodiment 3

[0063] Method for preparing plate-shaped tungsten carbide-cobalt alloy

[0064] Add 100g of tungsten powder with a particle size of 5 μm into a ball milling tank for flattening treatment. Wet ball milling is used, with alcohol as the ball milling medium, the ball to particle ratio is 10:1, the ball milling speed is 250r / min, and the ball milling time is 36h. After ball milling, a vacuum drying oven was used for drying at a drying temperature of 60°C and a drying time of 8 hours.

[0065] Add the flattened tungsten powder, ultrafine WC-Co powder, cobalt powder, carbon black and paraffin into the ball mill tank according to the stoichiometric ratio of 10% cobalt content in the formed plate-shaped tungsten carbide-cobalt alloy. mix. Among them, the mass percentage of ultra-fine WC-Co powder is 20%, and the particle size is 0.4 μm; the particle size of cobalt powder is 0.85 μm, and the particle size of carbon black is 0.3 μm, and the amount of carbon black added is the plate shap...

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Abstract

The invention provides plate-shaped tungsten carbide-cobalt alloy and a preparation method thereof. The method comprises the following steps: enabling a raw material mixture to be subjected to sintering treatment so as to obtain the plate-shaped tungsten carbide-cobalt alloy, wherein the raw material mixture contains superfine WC-Co powder, and in the raw material mixture, the grain sizes of at least 90% or more of the superfine WC-Co powder are not greater than 800 nm. The method is simple and convenient to operate, easy to realize, relatively low in cost and easy to industrialize, and the prepared plate-shaped tungsten carbide-cobalt alloy has relatively uniform particle sizes and excellent mechanical properties.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a plate-shaped tungsten carbide-cobalt alloy and a preparation method thereof. Background technique [0002] High-strength, high-toughness "double-high" cemented carbide is one of the development directions of high-performance tungsten-based materials. However, the strength of cemented carbide is mainly provided by the hard phase such as tungsten carbide, while the toughness is mainly provided by the bonding phase such as cobalt, which leads to the mutual restriction of the strength and toughness of traditional cemented carbide. The crystal structure of tungsten carbide is a hexagonal structure, with three characteristic crystal planes (0 0 0 1) axial plane, (01 1 0) I facet and (1 0 1 0) II facet, and its crystal growth is typical Anisotropic growth. Since the hardness of the (0 0 0 1) axial surface of tungsten carbide is higher than that of the facet, by increasing the rati...

Claims

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Application Information

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IPC IPC(8): C22C29/08C22C1/05C22C1/10
CPCC22C1/058C22C29/005C22C29/067C22C29/08
Inventor 羊求民赵立夫傅雨王红云杨诚辉林丽萍
Owner CHONGYI ZHANGYUAN TUNGSTEN
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