Title:
3D PRINTING METHOD AND SYSTEM USING NEAR-INFRARED LIGHT SEMICONDUCTOR LASER AS HEATING SOURCE
Document Type and Number:
WIPO Patent Application WO/2021/204005
Kind Code:
A1
Abstract:
Provided are a 3D printing method and system that use a near-infrared light semiconductor laser as a heating source. The 3D printing system comprises a printing nozzle (4). During a 3D printing process, a laser spot is formed by outputting a laser beam by means of a near-infrared light semiconductor laser, and the laser spot is scanned to cover a relevant area of a printed material in an arbitrary path for in-situ heating so as to achieve "asynchronous" printing. The penetration depth of near-infrared light is higher than that of mid-infrared light, so that the printing method using the near-infrared light semiconductor laser as the heating source can be flexible and compatible with each printing platform. In addition, the process of laser operation in a printing system may be decoupled from a 3D printing process so as to improve the bonding strength of a multi-layer extruded filament or sintered powder interface by using a more flexible in-situ heating manner, and remove residual internal stress, low crystallinity and other mechanical defects of a part.
Inventors:
ZOU WEIZHI (CN)
XU JIAN (CN)
ZHANG ZHIYAN (CN)
GAO YAN (CN)
LIN XUECHUN (CN)
ZHAO NING (CN)
XU JIAN (CN)
ZHANG ZHIYAN (CN)
GAO YAN (CN)
LIN XUECHUN (CN)
ZHAO NING (CN)
Application Number:
PCT/CN2021/083619
Publication Date:
October 14, 2021
Filing Date:
March 29, 2021
Export Citation:
Assignee:
INST CHEMISTRY CAS (CN)
International Classes:
B29C64/135; B29C64/295; B33Y10/00; H01S5/00
Foreign References:
| CN106915079A | 2017-07-04 | |||
| CN107262711A | 2017-10-20 | |||
| JPH04349462A | 1992-12-03 | |||
| CN109177149A | 2019-01-11 | |||
| CN106926447A | 2017-07-07 |
Other References:
LU GUANGHONG: "The Application Research of the Semiconductor Laser in the Rapid Prototyping", MASTER'S THESIS OF NORTH UNIVERSITY OF CHINA, 14 November 2008 (2008-11-14), XP055856171
Attorney, Agent or Firm:
BEIJING ORIGINTELLIGENCE IP LAW FIRM (CN)
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