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Preparation method of 3D printing material

A 3D printing and material technology, applied in the direction of additive processing, tungsten/molybdenum carbide, carbide, etc., can solve the problems of wide particle size distribution, low hardness and strength, low bulk density, etc., to achieve narrow particle size distribution, High hardness and strength, high bulk density

Inactive Publication Date: 2018-01-12
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, conventional metal 3D printing materials, such as titanium alloys, cobalt-chromium alloys, stainless steel and aluminum alloys, have the disadvantages of low bulk density, wide particle size distribution, and low hardness and strength.

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0029] A kind of preparation method of 3D printing material, it is the following steps:

[0030] (1) Cobalt chloride and nickel chloride are mixed evenly with pure water according to a molar ratio of 8-10:1, and an organic extractant is added to extract cobalt nickel into the organic extractant, washed with pure water, and the Wash the chloride ion until the content is less than 10ppm, the concentration of cobalt and nickel is 0.2-0.3mol / L, add metatungstic acid to 70-80℃ hot water and dissolve it until the concentration is 0.2-0.3mol / L;

[0031] (2) The cobalt-nickel-containing extractant and metatungstic acid solution are sprayed into the spray chamber. The droplet diameter of the cobalt-nickel extractant is 0.1-0.2mm, and the speed of entering the spray chamber is 5-10m / s. The droplet diameter of the metatungstic acid solution is 0.05-0.1mm, the speed of entering the spray chamber is 5-10m / s, and the temperature in the spray chamber is maintained at 50-60°C. The ratio is 1...

Embodiment 1

[0041] A kind of preparation method of 3D printing material, it is the following steps:

[0042] (1) Mix cobalt chloride and nickel chloride with pure water according to the molar ratio of 8.5:1, add an organic extractant to extract cobalt nickel into the organic extractant, wash with pure water, and remove the chloride ions in the organic extractant Wash until the content is less than 10ppm, the concentration of cobalt and nickel is 0.25mol / L, add metatungstic acid to 73°C hot water and dissolve until the concentration is 0.3mol / L;

[0043] (2) The cobalt-nickel-containing extractant and metatungstic acid solution are sprayed into the spray chamber. The droplet diameter of the cobalt-nickel extractant is 0.15mm, and the speed of entering the spray chamber is 8m / s. The metatungstic acid solution The particle diameter of the spray droplet is 0.07mm, and the speed of entering the spray chamber is 9m / s. There is an updraft with a speed of 3m / s, and the spray chamber rotates at a...

Embodiment 2

[0055] A kind of preparation method of 3D printing material, it is the following steps:

[0056] (1) Mix cobalt chloride and nickel chloride with pure water according to the molar ratio of 8.3:1, add an organic extractant to extract cobalt nickel into the organic extractant, wash with pure water, and remove the chloride ions in the organic extractant Wash until the content is less than 10ppm, the concentration of cobalt and nickel is 0.25mol / L, add metatungstic acid to 75℃ hot water and dissolve until the concentration is 0.25mol / L;

[0057] (2) The cobalt-nickel-containing extractant and metatungstic acid solution are sprayed into the spray chamber. The droplet diameter of the cobalt-nickel extractant is 0.15mm, and the speed of entering the spray chamber is 8m / s. The metatungstic acid solution The particle diameter of the spray droplet is 0.065mm, and the speed of entering the spray chamber is 7m / s. There is an updraft with a speed of 3m / s, and the spray chamber rotates at ...

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Abstract

The invention discloses a preparation method of a 3D printing material. The preparation method comprises the steps of extracting cobalt chloride and nickel chloride into an organic extraction agent, and compounding metatungstic acid into a solution; after the extraction agent containing cobalt and nickel and the metatungstic acid solution enter a mist spray chamber for a reaction in the form of mist spray, pouring out all materials in the mist spray chamber, and conducting filtration through a centrifugal machine; after a solid is washed, adding a glucose solution for slurrying; conducting mist spray drying, putting dried materials into a high-temperature furnace for calcination, and meanwhile, introducing inertia atmosphere, wherein the calcination portion is divided into three temperature areas; lowering the temperature till the temperature of the materials ranges from 25 DEG C to 30 DEG C; pouring the materials obtained after temperature reduction into a storage tank full of nitrogen; and then, conducting crushing through a nitrogen-protected airflow crusher, so that the 3D printing material is obtained. The preparation method of the 3D printing material is simple in process; and the 3D printing material which is high in apparent density, narrow in size distribution and high in hardness and strength can be obtained.

Description

technical field [0001] The invention relates to a preparation method of a 3D printing material, which belongs to the technical field of 3D printing. Background technique [0002] 3D printing is the technology of manufacturing three-dimensional products by adding materials layer by layer according to the designed 3D model. This layer-by-layer accumulation forming technology is also called additive manufacturing. 3D printing combines digital modeling technology, electromechanical The cutting-edge technology in many fields such as control technology, information technology, material science and chemistry is a core technology of rapid prototyping technology known as the "third industrial revolution". Compared with traditional manufacturing technology, 3D printing does not need to be manufactured in advance. Molds do not need to remove a large amount of material during the manufacturing process, nor can the final product be obtained through a complicated forging process. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/20C01B32/949B33Y70/00
Inventor 何颂华
Owner SHENZHEN POLYTECHNIC
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