Device for producing metal powder for 3D printing by gas atomization

A 3D printing and metal powder technology, which is applied in the field of atomization to prepare metal powder and powder metallurgy, to achieve the effects of narrowing the particle size range of the material, improving the efficiency of airflow, and increasing the area

Pending Publication Date: 2018-10-19
JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The electromagnetic force acts on the melting point of the molten liquid stream or droplet, such as figure 1 As shown, the molten liquid flow or droplet will receive the electromagnetic force written outward toward the bottom of the induction coil, which will widen the liquid flow or droplet, but in the prior art, this point has not been utilized

Method used

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  • Device for producing metal powder for 3D printing by gas atomization
  • Device for producing metal powder for 3D printing by gas atomization
  • Device for producing metal powder for 3D printing by gas atomization

Examples

Experimental program
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Effect test

no. 1 example

[0037] like figure 2 As shown, on the basis of the basic implementation, the first coil 61 is set as a frustum-shaped coil, the inner diameter of the top coil of the second coil 62 is smaller than the inner diameter of the first coil 61, and the cone angle of the first coil 61 is smaller than that of the second coil 61. The cone angle of the coil 62, the cone angle of the first coil 61 is between 30-50°. The purpose of setting the first coil into a truncated cone shape is to reduce the cross-interference of the magnetic force lines of the two coils.

no. 2 example

[0039] like image 3As shown, on the basis of the basic implementation, the technical solution of the first embodiment sets the first coil 61 as a cylindrical coil, and the inner diameter of the top coil of the second coil 62 is the same as the inner diameter of the first coil 61 . It also includes 2-4 microwave transmitters 90, the waveguides of which are located at the bottom of the second coil, and are evenly distributed along the horizontal circumference, and the center of the circle where they are located is located on the axis of the high-frequency induction coil 60, and the waveguide emission ports all point to the melting In the center, the outer surface of the waveguide is covered with an electromagnetic shielding layer. The electromagnetic shielding layer can be used alone. If the electromagnetic shielding film is used alone, the service life may be shorter due to high temperature. An additional layer of heat insulation layer is added on the electromagnetic shielding...

no. 3 example

[0042] like Figure 4 As shown, on the basis of the basic implementation, the technical solution of the first embodiment sets the first coil 61 as a cylindrical coil, and the inner diameter of the top coil of the second coil 62 is the same as the inner diameter of the first coil 61 . It also includes 2-4 microwave transmitters 90, the waveguide of which is located between the first and second coils, and is evenly distributed along the horizontal circumference, and the center of the circle where it is located is located on the axis of the high-frequency induction coil 60, and the waveguide emits The ports all point to the melting center, and the outer surface of the waveguide is covered with an electromagnetic shielding layer. The electromagnetic shielding layer can be used alone. If the electromagnetic shielding film is used alone, the service life may be shorter due to high temperature. An additional layer of heat insulation layer is added on the electromagnetic shielding fil...

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Abstract

The invention discloses a device for producing metal powder for 3D printing by gas atomization. The device comprises an atomizing spray tray fixing top plate, an atomizing spray tray, an electromagnetic shielding ring and radio-frequency induction coils from top to bottom. The atomizing spray tray comprises a main atomizing airflow nozzle and an auxiliary protection airflow nozzle. The radio-frequency induction coils include the first coil and the second coil which are disposed coaxially, and the first coil and the second coil are separately controlled by wires. The first coil is located abovethe second coil, and the second coil is a frustum-shaped coil with a cone angle between 30-60 degrees. A melting center is located in the second coil, alpha is less than beta, alpha is 30-50 degrees,and beta is 20-40 degrees. The device for producing the metal powder for 3D printing by gas atomization can effectively narrow the particle size range of the metal powder.

Description

technical field [0001] The invention belongs to the technical field of powder metallurgy, in particular to the technical field of preparing metal powder by an atomization method, in particular to a metal gas atomization device. Background technique [0002] The method and device for producing 3D printing metal powder by metal gas atomization are developing rapidly. Chinese patent (publication number CN107900366A, name: device and method for continuously preparing titanium or titanium alloy powder for 3D printing by gas atomization) discloses the following technical scheme : the device comprises from top to bottom the atomized spray plate fixed top plate, atomized spray plate, electromagnetic shielding ring and high-frequency induction coil; the atomized spray plate and the fixed top plate are fixed by fixing bolts; the atomized spray plate is fixed The central position of the top plate and the atomizing spray plate is provided with a continuous feeding hole for titanium or t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
CPCB22F9/082B22F2009/0836B22F2009/0848
Inventor 唐跃跃张柯叶国晨蒋保林许荣玉周军张波李兆宽
Owner JIANGSU VILORY ADVANCED MATERIALS TECH CO LTD
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