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A 3D printing method

A 3D printing and powder spreading technology, applied in the field of 3D printing, can solve problems such as electron beam powder melting and forming, achieve the effects of reducing debris, preventing impact, and solving powder blowing problems

Active Publication Date: 2019-12-24
DONGGUAN EONTEC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there will be a special phenomenon in the process of electron beam 3D printing - powder blowing, which refers to the phenomenon that the metal powder particles have deviated from the original powder coating position before melting, so that the electron beam powder melting and forming cannot be carried out.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a 3D printing method, at least including the following steps:

[0039] The first step is to spread the powder on the first layer. In the vacuum environment, the walking mechanism drives the powder supply box to move, and the composite material for 3D printing is discharged from the powder supply box to the substrate, compacted and scraped;

[0040] The second step is to preheat the first layer of powder coating through the heating element under the substrate. layer powder melting;

[0041] In the third step, the lifting table is lowered by a unit height, and the walking mechanism drives the powder supply box to move again. The composite material for 3D printing is discharged from the powder supply box to the first layer of powder, compacted and scraped to form the second layer. spread powder;

[0042] The fourth step is to preheat the second layer of powder through the heating element under the substrate. At the same time, the second layer of ...

Embodiment 2

[0052] This embodiment provides a 3D printing method, at least including the following steps:

[0053] The first step is to spread the powder on the first layer. In the vacuum environment, the walking mechanism drives the powder supply box to move, and the composite material for 3D printing is discharged from the powder supply box to the substrate, compacted and scraped;

[0054] The second step is to preheat the first layer of powder coating through the heating element under the substrate. layer powder melting;

[0055] In the third step, the lifting table is lowered by a unit height, and the walking mechanism drives the powder supply box to move again. The composite material for 3D printing is discharged from the powder supply box to the first layer of powder, compacted and scraped to form the second layer. spread powder;

[0056] The fourth step is to preheat the second layer of powder through the heating element under the substrate. At the same time, the second layer of ...

Embodiment 3

[0066] This embodiment provides a 3D printing method, at least including the following steps:

[0067] The first step is to spread the powder on the first layer. In the vacuum environment, the walking mechanism drives the powder supply box to move, and the composite material for 3D printing is discharged from the powder supply box to the substrate, compacted and scraped;

[0068] The second step is to preheat the first layer of powder coating through the heating element under the substrate. layer powder melting;

[0069] In the third step, the lifting table is lowered by a unit height, and the walking mechanism drives the powder supply box to move again. The composite material for 3D printing is discharged from the powder supply box to the first layer of powder, compacted and scraped to form the second layer. spread powder;

[0070] The fourth step is to preheat the second layer of powder through the heating element under the substrate. At the same time, the second layer of ...

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Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to a 3D printing method, which at least includes the following steps: the first step is to spread powder on the first layer; The powder is discharged from the powder box onto the substrate, compacted, and scraped; the second step is to preheat the first layer of powder coating through the heating element under the substrate, and at the same time, adopt the electron beam deflection scanning heating method to start from the upper surface of the first layer of powder coating Preheat the first layer of powder, and then emit electron beams from the electron gun to melt the first layer of powder; repeat the above actions, lay the 2nd to N layers of composite material powder, preheat and melt, and complete 3D printing, where N=5~ 30. Compared with the prior art, the present invention can well solve the problem of powder blowing by using a special composite material and adopting a preheating procedure during the printing process, so that the electron beam 3D printing can be carried out normally.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, in particular to a 3D printing method. Background technique [0002] In the 1980s, 3D printing technology was born, and the traditional "removal" processing method continued. 3D printing is a bottom-up manufacturing method, also known as additive manufacturing technology, that is, through layer-by-layer accumulation The way to realize the construction of digital model to physical object. Due to its advantages of simplicity and speed, 3D printing technology has received great attention and developed rapidly since its birth. In recent decades, 3D printing technology has been applied in industrial design, architecture, automobile, aerospace, dentistry, education and other fields, but its application and development are still limited by many factors. In addition to equipment and printing process parameters, raw materials are also key factors affecting the quality of 3D printing products, which ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F1/00C22C49/08C22C49/14B33Y10/00B33Y70/00C22C101/10
CPCB22F1/0003C22C49/08C22C49/14B33Y10/00B33Y70/00B22F10/00B22F12/41B22F10/28B22F10/362B22F12/13B22F10/32Y02P10/25B22F12/17
Inventor 庞栋孙丽娟李卫荣李荣慧卢永安谭淑芬刘培玉唐冬娥
Owner DONGGUAN EONTEC CO LTD