Preparation method of aluminum alloy powder for additive manufacturing

An additive manufacturing and aluminum alloy technology, applied in the field of 3D printing additive manufacturing, can solve the problems of complicated production process, low production efficiency and high production cost, and achieve the effect of good fluidity, low powder content and high sphericity

Inactive Publication Date: 2017-02-15
中航迈特粉冶科技(北京)有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing aluminum alloy powder for additive manufacturing, w

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  • Preparation method of aluminum alloy powder for additive manufacturing
  • Preparation method of aluminum alloy powder for additive manufacturing
  • Preparation method of aluminum alloy powder for additive manufacturing

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Embodiment 1

[0031] (1) Use aluminum, silicon, magnesium, etc. as raw materials, and make ingredients according to the AlSi 10Mg alloy in ISO 3522-2007, wherein the purity of aluminum, silicon, and magnesium is ≥99.9%, and the oxygen content is ≤50ppm, so as to ensure that the surface of the raw material is free from trachoma, scarring, Defects such as inclusions.

[0032] (2) Install a heat-resistant plate at the bottom of the intermediate frequency induction coil, wrap the coil with high-temperature tape as a lining, put it into a graphite crucible, and fill the gap between the crucible and the coil with dried 20-200 mesh neutral sand to ensure that the gap must be gradually The layers are filled and compacted, and the upper part of the neutral sand is sealed with high-temperature asbestos, and then sealed with glass water mixed with alumina or zirconia powder. Graphite rods are added into the crucible to bake the crucible, and the baking temperature is controlled at 350°C.

[0033] (3)...

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Abstract

The invention discloses a preparation method of aluminum alloy powder for additive manufacturing, and belongs to the technical field of 3D printing additive manufacturing. The preparation method comprises the steps that impurities in raw materials are removed; a graphite rod is added in a crucible to be roasted at the temperature of 300-500 DEG C; a smelting chamber and an atomization chamber are subjected to vacuum pumping treatment, wherein the vacuum degree reaches 1*10<-4>-1*10<-2> Pa; a heat preservation pot and a tundish are heated; metal liquid flow which perpendicularly drops is broken into small liquid drops through a nozzle with a negative pressure drainage effect under the high pressure of 0.5-6 MPa and high-purity argon, powder is formed through cooling and spheroidizing solidification, and a 5-30 kw high-pressure fan is adopted; and after the temperature is lower than 50 DEG C, screening is carried out under the atmosphere of high-purity argon. The preparation method has the advantages that industrial production can be achieved, the domestic urgent demand for high-performance aeronautical aluminum alloy powder materials is met, and the manufacturing cost is effectively saved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing additive manufacturing, and in particular relates to a preparation method of aluminum alloy powder for additive manufacturing. In particular, it relates to a preparation method of fine aluminum alloy powder for 3D printing additive manufacturing. Background technique [0002] Additive manufacturing, also known as 3D printing, is known as the smart manufacturing technology that triggered the third industrial revolution. With its advantages of "fast precision" and "free manufacturing", it quickly set off an upsurge in the global manufacturing field. Metal 3D printing technology is the most cutting-edge and most potential technology in the entire 3D printing system, and it is an important development direction of advanced manufacturing technology. Aluminum alloy has the characteristics of low density, high strength and good thermal strength, and is usually used as an aerospace material. With t...

Claims

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Application Information

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IPC IPC(8): B22F9/08B33Y70/00
CPCB22F9/082B22F2009/0824B22F2999/00B33Y70/00
Inventor 高鑫张鹏高正江马腾张飞郎云芳刘敬轩
Owner 中航迈特粉冶科技(北京)有限公司
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