Method for preparing spherical powder material used for three-dimensional printing

A spherical powder, three-dimensional printing technology, applied in the field of preparing spherical powder materials for three-dimensional printing and manufacturing three-dimensional printing consumables, can solve the problems of high production energy consumption, irregular shape, high oxygen content, and achieve precise and controllable process, sphericity The effect of high and low oxygen content

Inactive Publication Date: 2014-10-08
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 3D printing powder materials are the key to restricting the promotion and application of 3D printing technology. At present, the methods for preparing 3D printing powder materials mainly include mechanical grinding method, self-propagating high-temperature synthesis method, atomization method, rotating electrode method, chemical vapor deposition method; mechanical grinding method The process is simple and the cost is low, but the efficiency and purity are low, so it is difficult to be used in industrial production; although the self-propagating high-temperature synthesis method has a simple process and is easy to obtain fine powder, but the oxygen content is high and the shape is irregular, such as adding microalloying elements , the reaction is particularly difficult to fully, and the uniformity of the powder composition is poor; the atomization method is mainly used for the preparati

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  • Method for preparing spherical powder material used for three-dimensional printing
  • Method for preparing spherical powder material used for three-dimensional printing
  • Method for preparing spherical powder material used for three-dimensional printing

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Experimental program
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Embodiment 1

[0022] The method for preparing the spherical powder material for three-dimensional printing in this embodiment is as follows: figure 1 shown, including the following steps:

[0023] 1) Selection of raw materials: The raw materials selected in this embodiment are aluminum alloy powders prepared by purchased powder metallurgy;

[0024] 2) High-energy ball milling: adding the raw materials selected in step 1 into a high-performance ball milling device for ball milling;

[0025] In this embodiment, the ball milling tank is made of agate material, the grinding balls are made of agate balls, the ball-to-material ratio is 2:1, the ball milling time is 2 hours, and the ball milling speed is 1200r / min; in order to control the speed of ball milling and prevent oxidation, this embodiment uses Petroleum ether is used as a process control agent during the ball milling process, and high-purity argon is sealed in the ball milling tank at the same time;

[0026] 3) Screening: screening and...

Embodiment 2

[0030] The method for preparing a spherical powder material for three-dimensional printing in this embodiment includes the following steps:

[0031] 1) Select raw materials: the selected raw materials in this embodiment are stainless steel (stainless steel 316L) powder prepared by powder metallurgy method purchased from outside;

[0032] 2) High-energy ball milling: adding the raw materials selected in step 1 into a high-performance ball milling device for ball milling;

[0033] In this embodiment, the ball milling tank is made of agate material, the grinding balls are made of agate balls, the ball-to-material ratio is 4:1, the ball milling time is 4 hours, and the ball milling speed is 800r / min; in order to control the speed of ball milling and prevent oxidation, this embodiment uses Petroleum ether is used as a process control agent during the ball milling process, and high-purity argon is sealed in the ball milling tank at the same time;

[0034] 3) Screening: screening an...

Embodiment 3

[0038] The method for preparing a spherical powder material for three-dimensional printing in this embodiment includes the following steps:

[0039] 1) Select raw materials: the selected raw materials in this embodiment are titanium alloy (TC4) powder prepared by powder metallurgy method purchased from outside;

[0040] 2) High-energy ball milling: adding the raw materials selected in step 1 into a high-performance ball milling device for ball milling;

[0041] In this embodiment, the ball milling tank is made of WC material, the grinding balls are WC balls, the ball-to-material ratio is 6:1, the ball milling time is 6 hours, and the ball milling speed is 600r / min; in order to control the speed of ball milling and prevent oxidation, this embodiment uses Petroleum ether is used as a process control agent during the ball milling process, and high-purity argon is sealed in the ball milling tank at the same time;

[0042] 3) Screening: screening and grinding the obtained powder, ...

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Abstract

The invention discloses a method for preparing a spherical powder material used for three-dimensional printing. The method includes the steps of raw material selecting, high-energy ball milling and radio-frequency plasma spherizing. Selected raw materials are metal or alloy powder in the step of raw material selecting; the step of high-energy ball milling is carried out under the argon shielding condition, petroleum ether serves as the ball milling medium, and the metal or alloy powder is aluminum alloy powder, or titanium alloy powder, or nickel-base alloy powder, or stainless steel powder or tungsten alloy powder; according to the step of radio-frequency plasma spherizing, the total gas flow is 100 L/min-200 L/min, the input power of plasma is 50 kW-100 kW, the negative pressure of a gas outlet of a system is minus 1000 Pa-minus 2000 Pa, and the powder conveying amount is 50 g/min-150 g/min. The manufactured spherical powder is high in sphericity degree, even in granularity, low in oxygen content and good in liquidity, has few defects and is suitable for three-dimensional printing. The method for preparing the spherical powder material used for three-dimensional printing has the advantage that the process is accurate and controllable.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional manufacturing, and relates to a method for manufacturing three-dimensional printing consumables, in particular to a method for preparing spherical powder materials for three-dimensional printing. Background technique [0002] Three-dimensional printing, also known as 3D printing, is one of the most concerned emerging technologies in the world. It was selected as one of the ten most breakthrough technological innovations in 2014 by MIT's "Technology Review" magazine. As a strategic emerging industry, 3D printing technology and related industries are developing rapidly. McKinsey predicts that by 2025, the scale of 3D printing related industries is expected to reach 0.2 trillion to 0.6 trillion US dollars. [0003] 3D printing powder materials are the key to restricting the promotion and application of 3D printing technology. At present, the methods for preparing 3D printing powder material...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F1/00
Inventor 王林志王国玉陈勇
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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