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A kind of beryllium aluminum alloy powder and its preparation method and application

A technology of beryllium-aluminum alloy and vacuum environment, which is applied in the field of beryllium-aluminum alloy powder and its preparation, can solve the problems of affecting powder fluidity, low powder proportion, and many satellite powders, and achieve high production efficiency, good sphericity, and increased production efficiency. The effect of low oxygen

Active Publication Date: 2021-11-19
西藏智材新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The production process consumes a large amount of inert gas, which increases the cost. There are more satellite powder on the powder particles, which affects the fluidity of the powder. At the same time, there are some hollow powders, which are easy to cause metallurgical defects in printed parts, and the particle size distribution of the powder particles is relatively large. Wide, suitable for 3D printing, the proportion of powder in the size range is low

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  • A kind of beryllium aluminum alloy powder and its preparation method and application
  • A kind of beryllium aluminum alloy powder and its preparation method and application

Examples

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preparation example Construction

[0027] In an exemplary embodiment of the present invention, the preparation method of the beryllium aluminum alloy powder may include the following steps:

[0028] The vacuum smelted beryllium aluminum alloy rods or beryllium aluminum alloy rods produced by powder metallurgy are processed into consumable electrode raw material rods (also called raw material rods, beryllium aluminum alloy rods, beryllium aluminum alloy raw material rods, etc.) .

[0029] Put the raw material rod into the arc melting rotary atomization device, extract the vacuum, and then pass the mixed inert gas into the device.

[0030] Under the protection of inert gas, the plasma arc is turned on to melt the front end of the raw material rod into a liquid film, and the rotation speed of the rotating raw material rod is controlled. The liquid film melted at the front end of the raw material rod is broken into fine droplets under the action of centrifugal force. The proportion of beryllium-aluminum alloy liqu...

example 1

[0058] The rod prepared by powder metallurgy isostatic pressing sintering is used as a beryllium aluminum alloy raw material rod, the mass fraction of beryllium in the raw rod is 62%, the mass fraction of aluminum is 37.5, and the relative density is greater than 97%. Process the raw material rod into Ф50×600mm, remove the oxide and impurities on the surface of the raw material rod, put the raw material beryllium rod into the arc melting rotary atomization device, and vacuumize it to 3×10 -3 Pa, and then pass a mixed inert gas into the device to ensure that the oxygen content in the atomization chamber is 3ppm. Under the protection of inert gas, the arc melting rotary atomization device is turned on, and the arc melting power is controlled by adjusting the working current to control the melting speed of the beryllium aluminum alloy rod. The working current output is 1300A, the arc length is 70mm, and the raw material beryllium rod The rotating speed is 19000rpm. The front end ...

example 2

[0066] Take a beryllium aluminum alloy extruded rod with a relative density greater than 99%, whose chemical composition is shown in Table 2, and process it into a raw beryllium rod with a diameter of Ф100×350mm.

[0067] After the surface oxide and impurities are removed from the raw material beryllium rod, the raw material beryllium rod is placed in the arc rotating electrode device, and the vacuum degree is 6×10 -3 Pa, and then pass a mixed inert gas into the device to ensure that the oxygen content in the atomization chamber is 4ppm.

[0068] Under the protection of inert gas, the arc melting rotary atomization device is turned on, and the arc melting power is controlled by adjusting the working current to control the melting speed of the beryllium aluminum alloy rod. Among them, the working current output is 2100A, and the arc length is 45mm; rotating beryllium aluminum Alloy raw material rod, the rotation speed is 16000rpm, the front end of the raw material rod is melted...

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Abstract

The invention provides a beryllium aluminum alloy powder and a preparation method and application thereof. The preparation method may include the following steps: placing the beryllium aluminum alloy rod in a vacuum environment; passing an inert gas into the vacuum environment to replace the air, and after the replacement, the oxygen content in the vacuum environment is below 6 ppm; using an electric arc to make the beryllium aluminum alloy rod The end face is melted to form a liquid film; the liquid film is broken into fine droplets by centrifugal force; cooled to obtain beryllium aluminum alloy powder. The beryllium aluminum alloy powder may include beryllium aluminum alloy powder prepared by the above-mentioned preparation method of beryllium aluminum alloy powder. The applications may include applications in the field of laser or electron beam additive manufacturing, and / or applications in the field of laser or electron beam cladding. The beneficial effects of the present invention may include: the preparation method has high production efficiency and low energy consumption; the prepared spherical beryllium aluminum alloy powder has good sphericity, basically no hollow powder, low oxygen increase in the preparation process, good fluidity, and is 3D Good raw material for printing.

Description

technical field [0001] The invention relates to the technical field of preparation of beryllium aluminum alloy powder, in particular to a beryllium aluminum alloy powder and its preparation method and application. Background technique [0002] Beryllium aluminum alloy inherits the advantages of light weight, high elastic modulus of beryllium and high toughness and easy processing of aluminum, and has many advantages such as light weight, high specific stiffness, high specific strength, good thermal stability, high toughness, and corrosion resistance. With excellent characteristics, it has broad application prospects in aerospace industry, computer manufacturing industry, automobile industry, high-precision and high-speed electric welding machine manufacturing industry and other fields. Although beryllium aluminum alloy has a series of advantages, the preparation technology of beryllium aluminum alloy, especially the preparation technology of high performance beryllium alumin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/14B22F1/00B22F10/28C22C25/00B33Y70/00
CPCB22F9/14C22C25/00B33Y70/00B22F10/00B22F1/065B22F10/25B22F10/34B22F10/28Y02P10/25
Inventor 何安西
Owner 西藏智材新材料有限公司
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