Preparation method for titanium-aluminum alloy superfine powder

A technology of titanium-aluminum alloy and ultrafine powder, which is applied in the field of preparation of titanium-aluminum alloy ultrafine powder, which can solve the problems of complex process, small diameter ultrafine powder, difficulty in preparing purity, etc., and achieve the effect of uniform particle size and simple process

Inactive Publication Date: 2015-04-29
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purity of titanium-aluminum alloy powder prepared by gas atomization method and water atomization method is not easy to control, and it is difficult to prepare ultrafine powder with high purity and small diameter
Centrifugal atomization can prepare titanium-aluminum alloy powder with high purity, but the process is complicated and the cost is high

Method used

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  • Preparation method for titanium-aluminum alloy superfine powder
  • Preparation method for titanium-aluminum alloy superfine powder
  • Preparation method for titanium-aluminum alloy superfine powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method is as follows,

[0019] (1) Take two titanium-aluminum alloy rods with a length of 175mm and a diameter of 3mm. The composition of the titanium-aluminum alloy rods is given by atomic ratio, which is 45.8% titanium, 46.2% aluminum, and 8% tantalum. Then use sandpaper to polish and remove the scale, and then clamp them to the upper pole electrode 2 and the lower pole electrode 6 of the electric discharge pulse machining machine tool respectively.

[0020] (2) Turn on the power of the EDM machine tool, fix the lower electrode 6 on the bottom of the heat preservation barrel 8, adjust the position of the upper electrode 3 and the lower electrode 5, align one end of them, and adjust the distance between the two electrodes to a suitable The distance between the two electrodes is adjusted here to be 5mm.

[0021] (3) Adjust the pulse width of the EDM machine tool to 200us, adjust the pulse interval of the EDM machine tool to 100us, stabilize the working ...

Embodiment 2

[0028] The preparation method is as follows,

[0029] (1) Take two titanium-aluminum alloy rods with a length of 175 mm and a diameter of 6 mm. The composition of the titanium-aluminum alloy rods is given by atomic ratio, which is 45.8% titanium, 46.2% aluminum, and 8% tantalum. Then use sandpaper to polish and remove the scale, and then clamp them to the upper pole electrode 2 and the lower pole electrode 6 of the electric discharge pulse machining machine tool respectively.

[0030] (2) Turn on the power of the EDM machine tool, fix the lower electrode 6 on the bottom of the heat preservation barrel 8, adjust the position of the upper electrode 3 and the lower electrode 5, align one end of them, and adjust the distance between the two electrodes to a suitable The distance between the two electrodes is adjusted here to be 5mm.

[0031] (3) Adjust the pulse width of the EDM machine tool to 200us, adjust the pulse interval of the EDM machine tool to 100us, stabilize the workin...

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Abstract

The invention discloses a preparation method for titanium-aluminum alloy superfine powder. According to the technical scheme adopted by the invention, the preparation method comprises the following steps: selecting a titanium-aluminum alloy rod which is up-to-standard in component and 3mm and 6mm in diameter as a raw material, adopting a pulse electric spark processor to perform once processing on the titanium-aluminum alloy rod in liquid argon under proper pulse width and pulse interval parameter to obtain titanium-aluminum alloy superfine powder; and then, adopting vacuum low-temperature drying to obtain pure titanium-aluminum alloy superfine powder. The titanium-aluminum alloy superfine powder is widely applied to the titanium-aluminum alloy powder metallurgical preparation industry; the titanium-aluminum alloy material is widely applied to aviation, spaceflight, cars, metallurgy and the like.

Description

technical field [0001] The invention relates to a method for preparing titanium-aluminum alloy superfine powder, in particular to a method for preparing titanium-aluminum alloy superfine powder by electric discharge machining technology in liquid argon. Background technique [0002] Titanium-aluminum alloy has excellent comprehensive mechanical properties and oxidation resistance at high temperature, so it has great development potential in high-temperature applications such as aerospace engines. [0003] At present, the methods for preparing titanium-aluminum alloy powder include gas atomization, water atomization, centrifugal atomization and other methods. The purity of titanium-aluminum alloy powder prepared by gas atomization method and water atomization method is not easy to control, and it is difficult to prepare ultrafine powder with high purity and small diameter. Titanium-aluminum alloy powder with high purity can be prepared by centrifugal atomization, but the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14
Inventor 孙红亮宋紫微朱德贵蒋小松陈松
Owner SOUTHWEST JIAOTONG UNIV
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