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Powder extracting device and powder extracting method for high-temperature alloy powder

A high-temperature alloy and powder technology, which is applied in the direction of sampling devices, etc., can solve the problems of high-temperature alloy powder pollution, reduce the inspection accuracy of high-temperature alloy powder, and shorten the storage period of high-temperature alloy powder, so as to prolong the storage period, improve the inspection accuracy and ensure performance. Effect

Active Publication Date: 2013-06-26
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method is that the method is simple and fast, but due to the contact between the superalloy powder and the air in this process, the superalloy powder is polluted, which cannot truthfully reflect the state of the gas atomized powder under airtight conditions, and reduces the temperature of the superalloy powder. Inspection accuracy shortens the storage period of superalloy powders and affects the performance of high-purity powder turbine disks

Method used

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  • Powder extracting device and powder extracting method for high-temperature alloy powder

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Effect test

Embodiment 1

[0020] (1) In specific implementation, the vacuum valve model of the powder storage tank is: GU-100, the lower port vacuum valve model of the powder taking device is: GU-16KF, and the two vacuum valves on the outer cylindrical surface of the powder taking device are: GU-8KF;

[0021] (2) Vacuum: connect the outer port of a third vacuum valve 5 on the powder taking device to a vacuum pump, and connect the outer port of the other third vacuum valve 5 to an argon cylinder; open the second vacuum valve 3 and The third vacuum valve 5 connected to the vacuum pump and the third vacuum valve 5 connected to the argon cylinder are closed, and the vacuum is pumped until the vacuum pressure in the inner cavity of the powder extractor is 8pa.

[0022] (2) Argon filling: Close the third vacuum valve 5 connected to the vacuum pump, open the third vacuum valve 5 connected to the argon cylinder, and fill the powder extractor with argon until the pressure in the inner cavity of the powder extractor ...

Embodiment 2

[0026] (1) In specific implementation, the vacuum valve model of the powder storage tank is: GU-100, the lower port vacuum valve model of the powder taking device is: GU-16KF, and the two vacuum valves on the outer cylindrical surface of the powder taking device are: GU-8KF;

[0027] (2) Vacuum: connect the outer port of a third vacuum valve 5 on the powder taking device to a vacuum pump, and connect the outer port of the other third vacuum valve 5 to an argon cylinder; open the second vacuum valve 3 and The third vacuum valve 5 connected to the vacuum pump, and the third vacuum valve 5 connected to the argon cylinder are closed, and the vacuum is drawn until the vacuum pressure in the inner cavity of the powder extractor is 5 Pa;

[0028] (2) Argon filling: close the third vacuum valve 5 connected to the vacuum pump, open the third vacuum valve 5 connected to the argon cylinder, and fill the powder extractor with argon until the air pressure in the inner cavity of the powder extra...

Embodiment 3

[0032] (1) In specific implementation, the vacuum valve model of the powder storage tank is: GU-100, the lower port vacuum valve model of the powder taking device is: GU-16KF, and the two vacuum valves on the outer cylindrical surface of the powder taking device are: GU-8KF;

[0033] (2) Vacuum: connect the outer port of a third vacuum valve 5 on the powder taking device to a vacuum pump, and connect the outer port of the other third vacuum valve 5 to an argon cylinder; open the second vacuum valve 3 and The third vacuum valve 5 connected to the vacuum pump and the third vacuum valve 5 connected to the argon cylinder are closed, and the vacuum is pumped until the vacuum pressure in the inner cavity of the powder extractor is 6pa.

[0034] (2) Argon filling: close the third vacuum valve 5 connected to the vacuum pump, open the third vacuum valve 5 connected to the argon cylinder, and fill the powder extractor with argon until the air pressure in the inner cavity of the powder extrac...

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Abstract

The invention belongs to the powder metallurgy technology and relates to a powder extracting device and a powder extracting method for extracting high-temperature alloy powder from a vacuum sealed powder storage tank. The powder extracting device consists of a reducing sleeve (2), a second vacuum valve (3), a powder extractor (4), two third vacuum valves (5) and an inner barrel (6). The powder extracting method comprises the following steps of: carrying out vacuum-pumping; inflating argon gas; turning over; and extracting powder. According to the powder extracting device and the powder extracting method for the high-temperature alloy powder disclosed by the invention, the high-temperature alloy powder is prevented from being polluted due to the contact with atmosphere, the test precision of the high-temperature alloy powder is improved, the storage period of the high-temperature alloy powder is prolonged, and the performances of the high-purity powder turbine disc are ensured.

Description

Technical field [0001] The invention belongs to powder metallurgy technology, and relates to a powder extraction device and a powder extraction method for extracting high-temperature alloy powder from a vacuum-tight powder storage tank. Background technique [0002] Superalloy powder is used in the manufacture of advanced aero-engine turbine disks. The powder has a fine particle size and is easy to adsorb oxygen, which affects the metallurgical bonding and quality of the powder particles during forming, and then affects the mechanical properties, safety and reliability of the turbine disk. It must be collected, stored, and sieved under strict inert gas protection And use, the whole process must be isolated from the outside world. Sampling and testing of powder is a necessary link to determine the quality and availability of powder. However, improper sampling methods can easily cause contamination of the original powder and powder samples, which will affect the powder test result...

Claims

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Application Information

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IPC IPC(8): G01N1/14
Inventor 高正江李周张国庆袁华许文勇
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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