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Beryllium-aluminum alloy powder and preparation method and application thereof

A beryllium-aluminum alloy and vacuum environment technology, which is applied in the field of beryllium-aluminum alloy powder and its preparation, can solve the problems of affecting the fluidity of the powder, many satellite powders, and wide particle size distribution of powder particles, and achieves high production efficiency and low oxygen increase. , the effect of good liquidity

Active Publication Date: 2020-08-25
西藏智材新材料有限公司
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  • 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

Method used

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  • Beryllium-aluminum alloy powder and preparation method and application thereof
  • Beryllium-aluminum alloy powder and preparation method and application thereof

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 beryllium-aluminum alloy powder and a preparation method and application thereof. The preparation method comprises the following steps of placing a beryllium-aluminum alloy rodin a vacuum environment; introducing inert gas into the vacuum environment to replace air, wherein the oxygen content in the replaced vacuum environment is smaller than 6 ppm; melting the end surfaceof the beryllium-aluminum alloy rod by means of arc to form a liquid film; crushing the liquid film to fine liquid drops by means of centrifugal force; and carrying out cooling to obtain the beryllium-aluminum alloy powder. The beryllium-aluminum alloy powder may comprise the beryllium-aluminum alloy powder prepared through the preparation method of the beryllium-aluminum alloy powder. The application may comprise application of the beryllium-aluminum alloy powder in the field of laser or electron beam additive manufacturing and / or in the field of laser or electron beam cladding. The inventionhas the beneficial effects that the preparation method is high in production efficiency and low in energy consumption; the prepared beryllium-aluminum alloy powder is good in degree of sphericity, free of hollow powder basically, low in oxygenation amount in the manufacturing process and good in flowability and is a good raw material for 3D 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 Applications(China)
IPC IPC(8): B22F9/14B22F1/00B22F3/105C22C25/00B33Y70/00
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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