Method and device for preparing superfine spherical high-melt-point metal powder for 3D printing

A high melting point metal, 3D printing technology, applied in the field of high melting point metal powder preparation, can solve the problems of poor sphericity, poor spreadability and fluidity, and achieve the effect of reducing size, controllable particle size and improving output

Inactive Publication Date: 2015-04-29
DALIAN UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the above-mentioned problems such as poor sphericity, poor spreadability and fluidity in the preparation process of meta

Method used

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  • Method and device for preparing superfine spherical high-melt-point metal powder for 3D printing

Examples

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Effect test

Embodiment 1

[0045] Prepare copper metal powder for 3D printing with the above-mentioned device and method, and the specific implementation method is as follows:

[0046] First, the copper block is broken into block particles with a particle diameter of 2 cm, and the crucible 5 with a central hole in the bottom is packed into it. The amount of copper particles loaded reaches 1 / 2 of the capacity of the crucible 5, and then the material is made of graphite. Bolts with small holes (i.e. pads 20 with small holes) are installed to the bottom of the crucible 5 through four evenly distributed screws 10, and the furnace door 8 is closed; the crucible chamber 3, the housing 9 and the collection The chamber 13 is pumped to a low vacuum of 1Pa-5Pa, and then the diffusion pump 22 is used to pump a high vacuum to 10 -3 Pa, filled with high-purity inert gas argon to atmospheric pressure; set the power to energize the heating belt 7, and continue to heat up to overheating 10°C after the temperature reach...

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Abstract

The invention discloses a device for preparing superfine spherical high-melt-point metal powder for 3D printing. The device comprises a shell, a crucible disposed in the shell and a collecting bin disposed on the lower portion of the shell. The device is characterized in that a thermal coupler is disposed inside the crucible, and a heating band is disposed outside the crucible; the collecting bin is fixed with the shell through a support, an annular descending pipe is disposed between the shell and the collecting bin, a centrifugal plate is disposed at a position, which is opposite to the lower end of the annular descending pipe, in a collecting bin cavity, the centrifugal plate is supported by a support column, and a collecting groove is formed in the bottom of the collecting bin. The invention further discloses a method for preparing the superfine spherical high-melt-point metal powder for 3D printing. The method combines a pulse micro-pore injection method and a centrifugal atomizing method. The method and the device have the advantages that the high-melt-point metal powder satisfying requirements can be prepared efficiently, and the prepared metal power is controllable in particle size, narrow in particle size distribution interval, high in sphericity, free of satellite droplet, good in flowability and spreading property, high in production efficiency, low in cost and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of high-melting-point metal powder preparation, and specifically relates to a method and device for preparing ultra-fine spherical high-melting-point metal powder for 3D printing by combining a pulse microhole injection method and a centrifugal atomization method. Background technique [0002] With the continuous development of materials in the direction of miniaturization and integration, spherical powder materials have been widely concerned and applied in electronic packaging, energy materials, biomedicine, etc., especially in 3D printing. 3D printing technology breaks through the traditional preparation technology. It is a technology that uses bondable materials such as powdered metal or plastic to construct objects through layer-by-layer printing. It can realize the preparation of complex and tiny components, and the production efficiency is high. The material utilization rate is high and no mold is requ...

Claims

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Application Information

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IPC IPC(8): B22F9/10
Inventor 董伟吕凡许富民盖如坤魏宇婷康世薇
Owner DALIAN UNIV OF TECH
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