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Additive manufacturing method and additive manufacturing device with preheating functions

An additive manufacturing and functional technology, applied in the field of additive manufacturing, can solve the problems of unable to detect the deformation of the powder bed surface and uneven temperature field in real time, so as to improve the yield rate and manufacturing success rate, uniform temperature field, and avoid charge concentration Effect

Active Publication Date: 2017-06-13
QUICKBEAM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an additive manufacturing method and additive manufacturing device with a preheating function to solve the problems of uneven temperature field formed by preheating of existing additive manufacturing devices and the inability to detect the deformation of the powder bed surface in real time

Method used

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  • Additive manufacturing method and additive manufacturing device with preheating functions
  • Additive manufacturing method and additive manufacturing device with preheating functions
  • Additive manufacturing method and additive manufacturing device with preheating functions

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Embodiment 1

[0049] This embodiment provides a method for additive manufacturing with a preheating function, such as figure 1 As shown, the additive manufacturing method includes the following steps:

[0050] S10, controlling the ray to perform a raster preheating scan on the surface of the powder bed.

[0051] Specifically, the radiation is emitted by the radiation generating device, and the powder bed is scanned by the radiation. In this embodiment, the above-mentioned radiation is laser or electron beam.

[0052] The raster-type preheating scan is as follows: the ray scans the surface of the powder bed alternately along the horizontal scanning path and the vertical scanning path.

[0053] More specifically, refer to figure 2 , firstly, the powder bed surface is divided into M along the vertical direction in advance 1 horizontal areas, the above M 1 regions covering the cross-sectional area of ​​the entire 3D part, and in each region there are N 1 scanning path H; after that, the ...

Embodiment 2

[0082] This embodiment provides an additive manufacturing device with a preheating function, such as Figure 4 As shown, the additive manufacturing device includes a working plane 1 with a powder bed, a radiation generating device 2 and an imaging device 3 above the working plane 1, and a control device 4 connecting the radiation generating device 2 and the forming device 3, wherein :

[0083] The above-mentioned ray generating device 2 is used to emit a ray 5, which can raster scan the surface of the powder bed on the above-mentioned working plane 1 and form a raster line; it can also melt the surface of the above-mentioned powder bed to form a three-dimensional solid part. section. Preferably, the above-mentioned rays are lasers or electron beams, and when the rays are electron beams, the accelerating voltage is 60kV, the power is 0-10kW, the working plane 1 is set in a vacuum chamber, and vacuum systems such as pumps and valves can be used in the vacuum chamber Maintain a...

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Abstract

The invention belongs to the field of additive manufacturing technologies, and discloses an additive manufacturing method and an additive manufacturing device with preheating functions. The additive manufacturing method includes carrying out raster preheating scanning on the surfaces of powder beds by the aid of rays under the control. The raster preheating scanning includes alternately scanning the surfaces of the powder beds by the rays along scanning paths in the horizontal directions and scanning paths in the vertical directions. The additive manufacturing method and the additive manufacturing device have the advantages that the surfaces of the powder beds can be comprehensively preheated and can be alternately scanned via the scanning paths in the horizontal directions and the scanning paths in the vertical directions, accordingly, temperature fields formed by means of preheating can be uniform, electric charge concentration can be prevented to the greatest extent, and excellent foundations can be laid for 3D (three-dimensional) printing; the problem that three-dimensional entity components become waste products due to incapability of detecting deformation of the surfaces of existing powder beds or low detection reliability of existing additive manufacturing devices and inaccurate detection results can be effectively solved, and wastage of materials and time can be prevented.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to an additive manufacturing method and an additive manufacturing device with a preheating function. Background technique [0002] Additive manufacturing (3D printing) is a manufacturing technique that creates three-dimensional solid parts by continuously fusing more than one thin layer of material. [0003] Preheating is an important process of electron beam metal 3D printing, including preheating the substrate before laying powder, and preheating each layer of powder laid. The preheating path is very important, and two aspects need to be considered: on the one hand, it is necessary to heat the substrate or powder layer as uniformly as possible; If the repulsive force exceeds a certain value, the powder will be scattered and raised, resulting in the failure of the printing process. Therefore, the quality of the preheating directly affects the quality of the 3D prin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00B22F10/00B22F10/28B22F10/366B22F10/362Y02P10/25
Inventor 郭超马旭龙林峰张磊
Owner QUICKBEAM CO LTD
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