Preparation device and preparation method of composite powder for 3D printing

A composite powder and 3D printing technology, which is applied in the field of powder metallurgy, can solve problems such as high cost, uneven composition of composite powder, complex equipment structure, etc., and achieve the effect of uniform composition, uniform composition of composite powder, and simple and fast operation

Inactive Publication Date: 2018-05-15
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The equipment structures involved in these methods are relatively complex and costly, but the composite powders produced are still inhomogeneous

Method used

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  • Preparation device and preparation method of composite powder for 3D printing
  • Preparation device and preparation method of composite powder for 3D printing
  • Preparation device and preparation method of composite powder for 3D printing

Examples

Experimental program
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Effect test

Embodiment

[0045] Such as Figure 1~2 As shown, a preparation device for composite powder for 3D printing is provided, which includes a supply device 1 for liquid metal raw materials, a spray table 2 and at least one feeding device. In the injection through hole, the injection tube 11 of the supply device 1 is embedded in the injection through hole. The position corresponding to the outlet of the injection tube 11 is provided with a rotating water cooling table 4 for cooling the crushed liquid metal. The end of the injection tube 11 is a nozzle.

[0046] In order to make the finally obtained powder a composite powder, it is necessary to add powder materials to the metal raw material ejected from the supply device 1, so the above-mentioned preparation device also includes a gas material delivery pipe 5 with an inert gas inside, and the gas material delivery After passing through the feeding device, the end of the tube 5 is connected to the spray table 2. In this way, the powder material c...

Embodiment 2

[0060] Provide a kind of preparation method of composite powder for 3D printing, adopt the equipment of embodiment 1, and cooperate gas atomization method and injection molding technology, include:

[0061] A supply device for liquid metal raw materials is provided, and a spray pipe is arranged on the supply device;

[0062] Set up a spray table matching the supply device, and the spray pipe is embedded in the spray table;

[0063] Provide a feeding device for providing powder materials;

[0064] A gas mixing device is installed between the feeding device and the injection table. The gas mixing device has an inert gas feeding channel. The powder material provided by the feeding device can be mixed with the inert gas to form a suspension evenly after passing through the gas mixing device. Send it into the spray table to crush the liquid metal droplets sprayed from the spray tube;

[0065] A rotating water cooling table for cooling the crushed liquid metal is arranged at the p...

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Abstract

The invention belongs to the technical field of powder metallurgy, discloses a preparation device and a preparation method of composite powder for 3D printing, and adopts a gas atomization method andan injection molding technology. The preparation device and the preparation method comprise a liquid metal raw material supply device, a jetting table and a feeding device, wherein a spraying pipe isarranged on the supplying device; the jetting table is matched with the supplying device, and the jetting pipe is embedded into the jetting table in a penetrating mode; the feeding device is used forproviding powder materials; a gas mixing device is arranged between the feeding device and the jetting table, the gas mixing device is provided with an inert gas feeding channel, the powder material provided by the feeding device can be uniformly mixed with inert gas to form suspended solids after passing through the gas mixing device, the suspended solids are finally fed into the jetting table tocrush the sprayed metal droplets; and a rotary water cooling table used for cooling the crushed liquid metal is arranged at the position corresponding to the outlet of the jetting pipe. The inert gasand the powder material are uniformly mixed by arranging an electric spiral conveying device and the gas mixing device, and the obtained composite powder is uniform in component.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a preparation device and method for composite powder for 3D printing. Background technique [0002] 3D printing technology is a rapid prototyping technology based on digital model files, using metal powder or plastic and other bondable materials to construct objects through layer-by-layer printing. It has become one of the most concerned emerging technologies in the world, especially It has important application and development prospects in high-tech fields such as aerospace and automobiles and in the construction of national defense equipment. [0003] The relevant properties of the metal powder used for 3D printing, such as composition, inclusions, physical properties, etc., have a greater impact on the final product. Some studies have pointed out that if low-quality metal powder is used, even with the best 3D printing equipment and process, and the best process cont...

Claims

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Application Information

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IPC IPC(8): B22F9/08C22C21/00B33Y70/00
CPCB22F9/082B22F2009/0824B22F2009/0872B33Y70/00C22C21/00
Inventor 阳建君范才河孙斌欧玲吴艳辉曾凡彬
Owner HUNAN UNIV OF TECH
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