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Preparation method of nanoparticle reinforced titanium-based composite material based on 3D printing

A titanium-based composite material and 3D printing technology, applied in the field of 3D printing, can solve the problems of easy oxidation and high cost, and achieve the effects of fine grain strengthening, short molding time and high speed.

Pending Publication Date: 2021-06-04
深圳市光韵达增材制造研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material used in this method is titanium powder, which still has the problems of high cost and easy oxidation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh commercially available TiH with a balance 2 Powder 300g, TiH 2 The purity of the powder is 99.8%, and the particle size is 40 μm. It is put into a pre-cleaned and dried ball mill tank, and the volume ratio of ball to material is 20:1. will be filled with TiH 2 The ball milling tank of the powder is covered, and the tank body of the ball milling tank is filled with nitrogen gas for 3 times, and then the nitrogen gas with a purity of 99.99% is filled into the ball milling tank, and the pressure of filling the nitrogen gas is 8×10 5 Pa, then start mechanical ball milling, the rotating speed of the ball mill is 200r / min, the time of each ball milling is 50min, the interval between every two adjacent ball mills is 10min, the total time of ball milling is 5h, then stop the ball milling, and obtain the TiN preparation containing reinforcement. Put the composite powder of the reinforcement body in a vacuum glove box, take out the composite powder containing the reinforc...

Embodiment 2

[0042] Weigh commercially available TiH with a balance 2 Powder 100g, TiH 2 The purity of the powder is 99.8%, and the particle size is 80 μm. It is put into a pre-cleaned and dried ball mill jar, and the volume ratio of ball to material is 10:1. will be filled with TiH 2 The ball milling tank of the powder is covered, and the tank body of the ball milling tank is filled with nitrogen gas for 2 times, and then the nitrogen gas with a purity of 99.99% is filled into the ball milling tank, and the pressure of filling the nitrogen gas is 3×10 5 Pa, then start mechanical ball milling, the rotating speed of the ball mill is 400r / min, the time of each ball milling is 20min, the interval between every two adjacent ball mills is 15min, the total time of ball milling is 2h, then stop the ball milling, and obtain the preparation containing reinforcement TiN Put the composite powder of the reinforcement body in a vacuum glove box, take out the composite powder containing the reinforcem...

Embodiment 3

[0044] Weigh commercially available TiH with a balance 2 Powder 200g, TiH 2 The purity of the powder is 99.8%, and the particle size is 60 μm. It is put into a pre-cleaned and dried ball mill tank, and the volume ratio of ball to material is 15:1. will be filled with TiH 2 The ball milling tank of the powder is covered, and the tank body of the ball milling tank is filled with nitrogen gas for 3 times, and then the nitrogen gas with a purity of 99.99% is filled into the ball milling tank, and the pressure of filling the nitrogen gas is 5×10 5 Pa, then start mechanical ball milling, the rotating speed of the ball mill is 200r / min, the time of each ball milling is 50min, the interval between every two adjacent ball mills is 10min, the total time of ball milling is 5h, then stop the ball milling to obtain the reinforced TiN preparation , put the ball milling jar in a vacuum glove box, take out the composite powder containing the reinforcement TiN preparation from the ball milli...

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Abstract

The invention provides a preparation method of a nanoparticle reinforced titanium-based composite material based on 3D printing. The preparation method comprises the following steps: S1, weighing TiH2 powder, and putting the TiH2 powder into a pre-cleaned and dried ball-milling tank; S2, covering the ball-milling tank filled with the TiH2 powder, flushing the ball-milling tank with nitrogen for 2-3 times to remove air in the tank, and then filling nitrogen into the tank; and S3, carrying out high-pressure ball milling on the TiH2 powder and the nitrogen in an intermittent ball-milling mode to prepare a reinforcement TiN preparation body, placing the ball-milling tank in a vacuum glove box after ball milling is completed, taking out the prepared composite powder containing the reinforcement TiN preparation body, and loading into a sealed container; and S4, carrying out laser 3D printing forming on the composite powder containing the reinforcement TiN preparation body obtained after ball milling in the inert gas atmosphere or the vacuum condition. According to the preparation method, during 3D printing forming, the TiH2 powder is decomposed into Ti and H2 at a high temperature, a reducing atmosphere is provided, generation of TiO2 can be prevented, the forming time is short, and parts with complex shapes can be prepared.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a method for preparing a nanoparticle-reinforced titanium-based composite material based on 3D printing. Background technique [0002] Metal additive manufacturing technology is a high-end manufacturing technology that has developed rapidly in recent years. Based on the design idea of ​​"layer-by-layer accumulation", the required components are obtained through the accumulation of multiple layers. This technology only needs to establish a three-dimensional model of the workpiece to be prepared, and slice the model into several layers, start from the bottom layer through the process of rapid melting / solidification of laser or electron beam, and prepare components through accumulation. This technology has great advantages in the preparation of complex components, which greatly shortens the production cycle of the workpiece and reduces the cost of research and development. Howe...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C32/00C22C1/10B33Y40/10B33Y10/00B33Y70/00B33Y80/00
CPCC22C14/00C22C32/0068C22C1/10C22C1/1005B33Y40/10B33Y10/00B33Y70/00B33Y80/00C22C1/1089
Inventor 李春新李娜娜李昕张思伟韦佳成林煜佳
Owner 深圳市光韵达增材制造研究院
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