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Preparation method of titanium alloy powder for 3D printing

A 3D printing and titanium alloy technology, which is applied in the preparation of titanium alloy powder for 3D printing and the preparation of fine high-purity titanium alloy powder for 3D printing, to achieve the effects of increased production efficiency, low oxygen content, and high sphericity

Active Publication Date: 2016-11-30
中航迈特增材科技(北京)有限公司 +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of titanium alloy powder for 3D printing, which solves the problem of batch preparation of high-purity fine spherical titanium alloy powder

Method used

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  • Preparation method of titanium alloy powder for 3D printing
  • Preparation method of titanium alloy powder for 3D printing

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Embodiment 1

[0024] 1. Raw material processing: Select the TC4 bar for turning processing, the smooth surface makes the bar cylindricity reach 0.05mm, and one end is processed into a 120° cone angle;

[0025] 2. Loading and clamping: The bar is fixed to the lower end of the feeding mechanism through the clamping mechanism, and the feeding mechanism enables the bar to simultaneously generate axial linear feed and rotational motion; set the linear feed speed to 0.05m / min, The bar rotation speed is 600r / min;

[0026] 3. Preparation of smelting and atomizing atmosphere: pre-vacuum the smelting chamber and atomizing chamber, and the vacuum degree is required to be 1×10 ‐3 Pa, the leakage rate of the equipment is required to be less than 0.005Pa / s; high-purity argon gas is charged into the melting chamber and atomization chamber as protective gas, and the pressure of the melting chamber after being filled with high-purity argon gas is 0.1MPa, so as to avoid the ingredients in the melting process...

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Abstract

The invention discloses a preparation method of titanium alloy powder for 3D printing, and belongs to the technical field of 3D printing / material additive manufacturing. The method comprises the specific steps that raw materials are loaded and clamped after being treated; pre-vacuum-pumping treatment is carried out on a smelting chamber and an atomization furnace, and high-purity argon is introduced into the smelting chamber and the atomization furnace when the vacuum degree reaches 10<-5>-10<-3> Pa; a gate valve is opened, a feeding mechanism is turned on, and bar materials are heated at the temperature of 1550-1700 DEG C; metal molten drop or liquid flow is atomized through a supersonic speed tight coupling gas atomization nozzle, and finally screening is carried out. The preparation method has the advantages that impurities introduced in the smelting and atomization process can be effectively reduced, and it is ensured that power oxygen content is controlled to be below 200 ppm; continuous production can be carried out after bar materials are replaced, and the powder is uniform in granularity, good in degree of sphericity and good in flowability.

Description

technical field [0001] The invention belongs to the technical field of 3D printing / additive manufacturing, and particularly relates to a preparation method of titanium alloy powder for 3D printing. In particular, it relates to a preparation method of fine high-purity titanium alloy powder for 3D printing. Background technique [0002] Titanium alloys are widely used in the aerospace field due to their low density, high specific strength, good corrosion resistance, and excellent heat resistance. However, due to its poor machinability, parts in the aerospace field usually have complex shapes, which greatly limits the application of titanium alloys in the aerospace field. "3D printing", also known as "additive manufacturing", has set off a boom in the global aerospace and military manufacturing industry in recent years due to its inherent advantages of "flexible manufacturing" and "saving raw materials" compared to traditional manufacturing methods. The application of 3D prin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B33Y70/00
CPCB22F9/082B22F2009/0844B22F2009/0848B22F2009/0892B33Y70/00
Inventor 张飞高鑫高正江马腾李建群刘敬轩
Owner 中航迈特增材科技(北京)有限公司
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