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Classification device of metal powder and using method

A metal powder and classification device technology, applied in the fields of metal powder classification device and fine metal powder classification device, can solve the problems of easy clogging of the screen, light specific gravity of the fine powder, difficult screen classification, etc., to ensure the purity, The effect of improving quality and high grading accuracy

Active Publication Date: 2017-02-15
中航迈特增材科技(北京)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problem that the traditional method of grading metal powder has a light specific gravity of fine powder, which is easy to block the screen, and it is difficult to classify through the screen during the screening process.

Method used

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  • Classification device of metal powder and using method
  • Classification device of metal powder and using method
  • Classification device of metal powder and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Take 5Kg superalloy powder, brand GH3536, particle size 0-53μm, put the powder into the powder storage tank in a vacuum glove box, and close the ball valve.

[0024] 2. Put the powder storage tank with the powder upside down on the bracket.

[0025] 3. The lower end of the ball valve is connected to a stainless steel hose, the length of the hose is 200mm, and the lower end of the hose is connected to a KF40-80 adapter.

[0026] 4. The lower end of the adapter is connected to the upper cover of the inlet, and the upper cover of the feed inlet and the feeding funnel are connected through a cylindrical dust filter tube.

[0027] 5. Turn on the inverter switch of the classifier, and run the empty car at a low speed of 9Hz for 15 minutes. Start the induced draft fan, the power of the induced draft fan is 3KW, after the fan is running in balance, open the damper of the induced draft fan and the secondary air valve, the damper of the induced draft fan is fully opened, and ...

Embodiment 2

[0034] 1. Take 5Kg of titanium alloy powder, brand TC4, particle size 0-53μm, put the powder into the powder storage tank in a vacuum glove box, and close the ball valve.

[0035] 2. Put the powder storage tank with the powder upside down on the bracket.

[0036] 3. The lower end of the ball valve is connected to a stainless steel hose, the length of the hose is 240mm, and the lower end of the hose is connected to a KF40-80 adapter.

[0037] 4. The lower end of the adapter is connected to the upper cover of the inlet, and the upper cover of the feed inlet and the feeding funnel are connected through a cylindrical dust filter tank.

[0038] 5. Turn on the inverter switch of the classifier, and run the empty car at a low speed of 9Hz for 15 minutes. Start the induced draft fan, the power of the induced draft fan is 3KW, after the fan is running in balance, open the damper of the induced draft fan and the secondary air valve, the damper of the induced draft fan is fully opened, ...

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Abstract

The invention discloses a classification device of metal powder and a using method, and belongs to the technical field of metal powder for 3D printing. The classification device comprises a powder storage tank, a support, a wind motor, a classification wheel, a primary powder collection tank, an induced draft fan and the like. The powder storage tank is inversely placed on the support. A classification motor is located above a barrel and directly connected with the classification wheel. The using method comprises the steps that powder is loaded into the powder storage tank, a ball valve is closed, the powder storage tank is inversely placed on the support, a classifier frequency converter, an induced draft fan ventilation door and a secondary air valve are started after it is determined that connection is errorless, the power of the induced draft fan is 2-5 KW, the power of the classification wheel is adjusted to be 30-50 KW, a pulse instrument carries out cyclic injection for 4-10 min after classification and then is turned off, and sampling is carried out for grain size analysis. The classification device has the advantages that pollution is effectively reduced, the working intensity is lowered, and product quality is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of metal powder for 3D printing, and in particular relates to a grading device and a use method of metal powder. In particular, it relates to a classifying device and a using method of fine metal powder. Background technique [0002] As a typical representative technology in the manufacturing field of the third industrial revolution, 3D printing technology has attracted widespread attention from all walks of life. Especially in aerospace manufacturing companies, they are spending a lot of financial and material resources to increase research and development efforts to ensure their own technological advantages. The powder spreading process in the 3D printing process is a prerequisite and plays a vital role in forming parts, and the fine powder in the powder spreading process (such as powder with a particle size of less than 15 μm, or irregularly shaped particles), due to the The force is very strong, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B07B7/083B07B11/00B07B11/06B07B11/02
CPCB07B7/083B07B11/00B07B11/02B07B11/06
Inventor 韩少丽高正江王晓菁赵灿吴景琛刘鑫
Owner 中航迈特增材科技(北京)有限公司
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