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Device and method for high-throughput preparation of spherical powder based on laser-coaxial powder feeding coupling

A spherical powder, coaxial powder feeding technology, applied in the direction of transportation and packaging, metal processing equipment, etc., to achieve the effect of expanding the scope of application

Pending Publication Date: 2021-04-02
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently developed high-throughput preparation technologies include diffusion multi-section method, co-deposition method, physical mask method, jet printing synthesis method and microfluidic synthesis method, etc., but most of these technologies are suitable for the preparation of bulk and thin film material samples. There are few reports on the high-throughput preparation technology of powders such as alloy powders and compound powders

Method used

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  • Device and method for high-throughput preparation of spherical powder based on laser-coaxial powder feeding coupling
  • Device and method for high-throughput preparation of spherical powder based on laser-coaxial powder feeding coupling
  • Device and method for high-throughput preparation of spherical powder based on laser-coaxial powder feeding coupling

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Effect test

Embodiment 1

[0044] Example 1: High Throughput Powder Alloying

[0045] combine image 3 Shown, the method for preparing spherical powder based on laser-coaxial powder feeding coupling high throughput of the present invention comprises the following steps:

[0046] 1) Raw material preparation (step S101), put the powders of raw materials A, B, C, etc. with different components into the multi-channel powder feeder 1 that is isolated from each other. Such as figure 1 As shown, the ratio of different powders can be controlled by controlling the flow rate of the multi-channel powder feeder 1 through the computer system. The gas is transported to the laser spot;

[0047] 2) Powder alloying (step S102), according to the different characteristics of the raw material powder, such as melting point, wave absorption, etc., adjust the power of the laser generator to match different raw material characteristics and laser spot diameter, turn on the laser generator 2, and the raw material powder is pass...

Embodiment 2

[0050] Embodiment 2: spheroidization of flake iron-based amorphous powder

[0051] 1) Load flake FeSiCuNb powder into multi-channel powder feeder 1, its microscopic appearance is as follows Figure 2a As shown, it is an irregular flake shape, and the powder feeding rate V~20g / min is precisely controlled by the computer system, and the laser spots are transported to the bottom of the annular nozzle through the carrier gas to converge;

[0052] 2) According to the characteristics of the raw material powder, adjust the power of the laser generator 2 to match the characteristics of the raw material and the diameter of the laser spot, turn on the laser generator 2, and the raw material powder is transported to the laser spot convergence point through the multi-channel powder feeder 1. Under the action of energy, the mixed powder melts rapidly. In this embodiment, the laser power is 2000W, the rotation speed of multi-channel powder feeder 1 is 50 r / min, and the flow rate of powder ...

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Abstract

The invention discloses a device and method for high-throughput preparation of spherical powder based on laser-coaxial powder feeding coupling. The device comprises a multi-channel powder feeder whichis used for simultaneously filling a plurality of raw material powders with different component types; a laser generator used for emitting lasers to heat and melt the powder provided by the multi-channel powder feeder; a material collecting tower located below the laser generator and used for cooling the molten powder and forming spherical powder; and a powder collector located below the materialcollecting tower and used for collecting the spherical powder. According to the device and method for high-throughput preparation of spherical powder based on laser-coaxial powder feeding coupling, high-throughput preparation of powder materials such as uniform-component alloy powder, ceramic powder, metal-based composite powder containing a ceramic reinforced phase and carbon nanotube containingreinforced metal-based composite powder can be realized.

Description

technical field [0001] The invention relates to the field of powder material preparation, in particular to a device and method for preparing spherical powder based on laser-coaxial powder feeding coupling high-throughput. Background technique [0002] In recent years, with the development of national economy and science and technology, the demand for new materials has become more and more urgent. New structural materials and functional materials R&D and application are directly related to national defense security, scientific and technological progress, people's living standards and national competitiveness. However, the "trial and error method" commonly used at present relies on a large number of experiments and the experience of researchers. The research and development cycle is long and the cost is high, which seriously restricts the research and development efficiency of new materials. For example, with the continuous improvement of the thrust-to-weight ratio of aero-en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08C22C45/02C04B35/626
CPCB22F9/082C22C45/02C04B35/62645B22F2009/0888B22F2009/0824B22F1/065B22F1/142
Inventor 刘颖王仁全李军王璐高宇
Owner SICHUAN UNIV
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