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A light-cured 3D printed metal part and its preparation method

A 3D printing and photocuring technology, which is applied in the field of additive manufacturing, can solve problems such as the inability to obtain a photocured structure, metal powders are easy to agglomerate, and hinder application, and achieve the effects of improving purity, improving dispersion, and avoiding the entry of oxygen

Active Publication Date: 2022-05-10
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

However, due to the fact that the metal powder is easy to agglomerate and has poor dispersion in the resin slurry, the problem that a complete light-cured structure cannot be obtained has always hindered the application of this technology in the field of metal parts preparation and processing.

Method used

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  • A light-cured 3D printed metal part and its preparation method
  • A light-cured 3D printed metal part and its preparation method
  • A light-cured 3D printed metal part and its preparation method

Examples

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preparation example Construction

[0042] On the one hand, the present invention provides a kind of preparation method of light curing 3D printing metal parts, such as figure 1 shown, including the following steps:

[0043] 1) Preparation of organic-coated metal powder material: adding a surface coating agent and a surface accelerator to the first mixed solution containing metal powder to perform a coating step; post-processing the product obtained in the coating step to obtain an organic-coated metal Powder material; wherein, the metal powder is pure metal powder and / or alloy powder.

[0044] This step is specifically as follows: mix the surface coating agent and the surface accelerator in a beaker, and stir it mechanically for 5-15 minutes, and set aside. Mix metal powder with alcohol and deionized water, and keep mechanical stirring in a constant temperature 45-60°C beaker for 30-60 minutes; then raise the temperature to 80-120°C, and slowly add surface coating agent and surface promoter to it The mixed solu...

Embodiment 1

[0064] In this embodiment, a light-cured 3D printed metal part (high-purity metal part) is prepared. Including the following steps:

[0065] 1) Preparation of organic-coated metal powder materials: Mix the surface coating agent and surface accelerator in a beaker, stir mechanically for 5 minutes, and set aside. Mix metal powder, ethanol and deionized water, and keep mechanical stirring in a beaker with a constant temperature of 60°C for 60 minutes, then raise the temperature to 80°C, and slowly add the mixture of surface coating agent and surface accelerator to it. Stir at 80° C. for 6 hours; take out the product powder, wash it with alcohol and dry it in an oven to obtain an organic-coated metal powder material.

[0066] Wherein, the raw material formula of this step is as follows: the metal powder is 800g spherical metal Ni powder with a particle size of 30 microns; the surface coating agent is 150g; the surface accelerator is 50g. Wherein, the surface coating agent is met...

Embodiment 2

[0075] In this embodiment, a light-cured 3D printed metal part (high-purity metal part) is prepared. Including the following steps:

[0076] 1) Preparation of organic-coated metal powder materials: Mix the surface coating agent and surface accelerator in a beaker, stir mechanically for 10 minutes, and set aside. Mix metal powder, ethanol and deionized water, and keep mechanical stirring in a beaker with a constant temperature of 50°C for 45 minutes, then raise the temperature to 90°C, and slowly add the mixture of surface coating agent and surface accelerator to it. Stir at 90°C for 10 hours; take out the product powder, wash it with alcohol and dry it in an oven to obtain an organic-coated metal powder material.

[0077] Wherein, the raw material formula of this step is as follows: metal powder is the spherical metal NiCoCrAlY powder (wherein, the massfraction of Ni is 33.5%, the massfraction of Co is 28%, the massfraction of Cr is 23%, The mass fraction of Al is 15%, the m...

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Abstract

The invention relates to a light-cured 3D printed metal part and a preparation method thereof. The preparation method comprises the following steps: adding a surface coating agent and a surface accelerator to the first mixed solution containing metal powder for coating; The product obtained in the coating step is post-treated to obtain an organic-coated metal powder material; wherein the metal powder is pure metal powder and / or alloy powder; the ultraviolet light diluent, ultraviolet light absorber, ultraviolet photoinitiator, dispersant , organic matter-coated metal powder materials are formulated into 3D printing paste; the 3D printing paste is subjected to photocuring molding treatment by using a photocuring 3D printer to obtain a photocuring 3D printing biscuit; degreasing the photocuring 3D printing biscuit, Sintering treatment to obtain light-cured 3D printed metal parts. The invention improves the dispersibility of the metal powder in the resin slurry through the method of coating the metal powder with organic matter, thereby adopting the method of photocuring 3D printing to prepare metal parts with high purity, complex shape and no component segregation.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a light-cured 3D printed metal part and a preparation method thereof. Background technique [0002] Compared with traditional processing technology, 3D printing technology has the advantages of being simple, fast and easy to customize, which can directly realize the construction of digital model to physical object. Therefore, in recent years, 3D printing technology has received great attention worldwide, and has broad application prospects in the fields of machinery, automobiles, aerospace and biomedicine. However, with the deepening of the concept of energy saving and emission reduction, higher lightweight requirements have been put forward for the transportation industry, and the requirements for efficient use of near-net-shaping materials have been put forward for the material processing field. [0003] In order to meet the requirements for efficient utilizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F10/12B22F1/102B33Y10/00B33Y70/10B33Y80/00
CPCB33Y10/00B33Y70/10B33Y80/00B22F1/102
Inventor 李金国李乔磊梁静静周亦胄孙晓峰
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI