Title:
DUAL-SPOT-BASED SLM FORMING SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2021/129468
Kind Code:
A1
Abstract:
A dual-spot-based SLM forming system (20) and a method. The system (20) comprises a first laser source portion (21), a second laser source portion (22), a beam combining assembly (23) and a light path guide portion (24), wherein the first laser source portion (21) is configured to emit a first laser beam, and the energy density of a cross-sectional center of the first laser beam is greater than or equal to a set energy density threshold value; the second laser source portion (22) is configured to emit a second laser beam, the energy density of the cross-section of the second laser beam is less than the energy density threshold value, and the cross-sectional diameter of the second laser beam is greater than the cross-sectional diameter of the first laser beam; the beam combining assembly (23) is configured to combine the first laser beam with the second laser beam to form a combined beam, and in the combined beam, the cross-section of the first laser beam is within the cross-section of the second laser beam; and the light path guide portion (24) is configured to direct the combined beam to metal powder (9) located in a forming plane (7), thereby reducing thermal stress and improving the forming quality.
Inventors:
YANG DONGHUI (CN)
LI YANG (CN)
XUE LEI (CN)
LI YANG (CN)
XUE LEI (CN)
Application Number:
PCT/CN2020/136628
Publication Date:
July 01, 2021
Filing Date:
December 15, 2020
Export Citation:
Assignee:
XIAN BRIGHT LASER TECH CO LTD (CN)
International Classes:
B22F3/105; B33Y30/00
Foreign References:
| CN110918994A | 2020-03-27 | |||
| CN211564508U | 2020-09-25 | |||
| CN107096920A | 2017-08-29 | |||
| CN108405860A | 2018-08-17 | |||
| CN207756917U | 2018-08-24 | |||
| CN110587118A | 2019-12-20 | |||
| US20090283501A1 | 2009-11-19 |
Attorney, Agent or Firm:
WING INTELLECTUAL PROPERTY OFFICE (CN)
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