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A light-cured 3D printing metal part doped with metal oxide and its preparation method

A 3D printing and light-curing technology, applied in metal processing equipment, additive manufacturing, process efficiency improvement, etc., can solve the problems of undeveloped solutions and preparation processes, increased difficulty of light-cured slurry, poor dispersion of metal materials, etc. , to achieve the effect of improving the depth of light transmission, not being prone to thermal cracks and thermal stress, and promoting dispersion

Active Publication Date: 2022-05-17
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the process of preparing metal parts by photocuring 3D printing, the preparation of stable photocurable slurry is a difficult point in this technology; the reason is that the density of metal materials is high, and the strong refraction effect on ultraviolet light makes metal materials Poor dispersion in the slurry and low depth of light transmission, which increases the difficulty of preparing a stable photocurable slurry
At present, this technology is still in its infancy in China, and there is no mature solution and preparation process, so it is urgent to solve and break through this problem

Method used

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  • A light-cured 3D printing metal part doped with metal oxide and its preparation method
  • A light-cured 3D printing metal part doped with metal oxide and its preparation method
  • A light-cured 3D printing metal part doped with metal oxide and its preparation method

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preparation example Construction

[0038] On the one hand, an embodiment of the present invention provides a method for preparing a photocured 3D printed metal part doped with a metal oxide, such as figure 1As shown, it mainly includes the following steps:

[0039] Pre-oxidation treatment: performing pre-oxidation treatment on the metal powder to obtain a product powder after pre-oxidation treatment; wherein, the metal powder is pure metal powder and / or alloy powder.

[0040] This step is carried out in a muffle furnace and in an air atmosphere. The temperature of the pre-oxidation treatment is 200-300° C.; the time of the pre-oxidation treatment is 3-12 hours.

[0041] The metal powder is one or more of Cu, Al, NiCoCrAlY, CoNiCrAlY, NiAl, NiCr spherical powder with a particle diameter of 10-50 μm.

[0042] Wherein, the product powder after the pre-oxidation treatment is a core-shell structure powder with a metal as the core and a metal oxide as the shell (see figure 2 SEM image).

[0043] The product powd...

Embodiment 1

[0057] This embodiment prepares a metal oxide-doped light-cured 3D printed metal part, which mainly includes the following steps:

[0058] Pre-oxidation treatment: In an air atmosphere, use a muffle furnace to perform pre-oxidation treatment on 640g of spherical metal Cu powder with a particle size of 20 microns to obtain a product powder after pre-oxidation treatment; wherein, the time of pre-oxidation treatment is 3 hours; The temperature of the pre-oxidation treatment is 300°C.

[0059] Prepare 3D printing metal paste: 267g trimethylpropane triacrylate, 33g tripropylene glycol diacrylate, 20g bis(2,4,6-trimethylbenzoyl) phenylphosphine oxide, 16g sodium polyacrylate, 24g of polyvinylpyrrolidone was mixed, and then 640g of the product powder after pre-oxidation treatment was added thereinto, and a mechanical stirrer was used to stir evenly to obtain a mixture. The mixture was placed in a ball mill and stirred at a stirring rate of 400rpm for 6h to obtain a 3D printing metal...

Embodiment 2

[0067] This embodiment prepares a metal oxide-doped light-cured 3D printed metal part, which mainly includes the following steps:

[0068] Pre-oxidation treatment: in an air atmosphere, utilize a muffle furnace to treat 550g particle diameter 10 micron spherical metal NiCoCrAlY powder (wherein, the mass fraction of Ni is 53%, the mass fraction of Co is 23%, the mass fraction of Cr is 18%, The mass fraction of Al is 5.5%, and the mass fraction of Y is 0.5%) for pre-oxidation treatment to obtain the product powder after pre-oxidation treatment; wherein, the time of pre-oxidation treatment is 10 hours; the temperature of pre-oxidation treatment is 200°C.

[0069] Prepare 3D printing metal paste: 311g of trimethylolpropane triacrylate, 89g of 1,6-hexanediol diacrylate, 5g of 2-hydroxy-2-methyl-1-phenylacetone-1, 5g 2,4,6-trimethylbenzoyl-diphenylphosphine oxide, 20g sodium hexametaphosphate, and 20g ammonium polyacrylate are mixed, and then 550g of pre-oxidized product powder is a...

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Abstract

The present invention relates to a metal oxide-doped light-cured 3D printing metal part and a preparation method thereof, wherein the method for preparing the metal oxide-doped light-curable 3D printing metal part comprises the following steps: pre-oxidizing the metal powder treatment to obtain the pre-oxidized product powder. The pre-oxidized product powder, photosensitive resin, photoinitiator, and dispersant are formulated into a light-curable 3D printing metal paste; the light-curable 3D printing metal paste is cured and molded by a light-curable 3D printer to obtain a light-curable 3D printing bisque. Degrease and sinter the light-cured 3D printing blank to obtain a light-curable 3D printing metal part doped with metal oxides. The present invention pre-oxidizes the metal powder before preparing the photocurable 3D printing metal paste to obtain a stable photocurable 3D printing metal paste, and then uses the photocurable 3D printing technology to prepare metal parts with excellent performance.

Description

technical field [0001] The invention relates to the technical field of light-curing 3D printing additive manufacturing, in particular to a metal oxide-doped light-curing 3D printing metal part and a preparation method thereof. Background technique [0002] With the development of the transportation industry, there are strict requirements on the complex shape and light weight of mechanical parts. Therefore, the preparation of advanced components with complex, thin-walled, and porous structures has received great attention from relevant practitioners. Complex geometric components are difficult or impossible to manufacture with traditional casting methods. However, additive manufacturing technology provides a new way for the manufacture of complex structural parts. [0003] At present, metals and alloys are widely used materials in the machinery manufacturing industry. Metal additive manufacturing technologies mainly focus on selective laser melting (SLM), electron beam melti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/16B22F1/145B22F10/12B33Y10/00B33Y70/10
CPCB33Y10/00B33Y70/10B22F1/145B22F1/10Y02P10/25
Inventor 梁静静李乔磊李金国周亦胄孙晓峰
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI