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Layer-by-layer selectable double-mode laser cleaning method and device in metal 3D printing

A 3D printing and laser cleaning technology, applied in the field of 3D printing, can solve the problems of aggravating the spheroidization effect, and achieve the effect of large cleaning range, easy control and fast cleaning speed

Active Publication Date: 2018-02-16
湖南珞佳智能科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the particle size distribution of the current powder layer is changed, resulting in holes and gaps in the metal layer after laser scanning, and exacerbating the spheroidization effect

Method used

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  • Layer-by-layer selectable double-mode laser cleaning method and device in metal 3D printing
  • Layer-by-layer selectable double-mode laser cleaning method and device in metal 3D printing
  • Layer-by-layer selectable double-mode laser cleaning method and device in metal 3D printing

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Embodiment Construction

[0048] Below in conjunction with accompanying drawing and specific implementation the present invention will be described in further detail:

[0049] The layer-by-layer selective dual-mode laser cleaning method in metal 3D printing designed by the present invention includes the following steps:

[0050] s1 Set auxiliary point laser, auxiliary line laser and impurity detection device in the 3D printer;

[0051] s2 Use auxiliary linear laser scanning to clean the surface of the 3D printer substrate;

[0052] s3 After the first layer of powder is laid, the 3D printing laser is used to start scanning processing. The impurity detection device detects one by one according to the printing path. When the impurity particles are larger than the specified value, the auxiliary linear laser is started to clean the printed path. When the impurity particles are smaller than the specified value When the value is set, start the auxiliary point laser to remove the impurity particles one by one. ...

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Abstract

The invention discloses a layer-by-layer selectable double-mode laser cleaning method and device in metal 3D printing. Auxiliary spot laser, auxiliary linear laser and an impurity detection device arearranged in a 3D printer. Firstly the surface of a base of the 3D printer is cleaned through scanning of the auxiliary linear laser; after a firs layer of powder bed begins to be printed, the impurity detection device conducts detection one by one according to printing routes, when the impurity particles are larger than a regulated value, the auxiliary linear laser is started to clean the printedroute, and when the impurity particles are smaller than the regulated value, the auxiliary spot laser is started to remove the impurity particles one by one; after machining and cleaning of a first layer are completed, machining and cleaning of a next layer are started by using the method adopted on the first layer, the rest can be done in the same manner, machining and cleaning are conducted layer by layer, till machining of a whole workpiece is completed. According to the layer-by-layer selectable double-mode laser cleaning method and device in metal 3D printing, the printing quality is controlled from the source, the time and cost are saved, and the double-mode laser cleaning method and device have good application prospects.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and specifically refers to a layer-by-layer selective dual-mode laser cleaning method and a cleaning device in metal 3D printing. Background technique [0002] Metal 3D printing technology can be used to manufacture complex, lightweight, refractory three-dimensional structural parts, especially some structural parts that cannot be processed by traditional techniques. For example, in the preparation process of aerospace special functionally graded materials, by controlling the powder material properties of each layer, two materials with different functions appear on the same structural part, and functionally graded structural parts can be obtained; this technology is used in In the field of new energy vehicles, a special hollow structure is manufactured through metal 3D printing technology, which makes structural parts lightweight and achieves the purpose of saving energy; in the medical field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B33Y10/00B33Y30/00B33Y50/02
CPCB33Y10/00B33Y30/00B33Y50/02B22F10/00B22F12/90B22F10/77B22F10/36B22F12/45B22F10/50B22F12/43B22F10/28Y02P10/25
Inventor 申胜男李辉张磊沈威
Owner 湖南珞佳智能科技有限公司
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