Title:
METHOD AND SYSTEM FOR LASER ADDITIVE MANUFACTURING BASED ON KEYHOLE EFFECTS
Document Type and Number:
WIPO Patent Application WO/2019/141115
Kind Code:
A1
Abstract:
A method for a laser additive manufacturing based on the keyhole effects, comprising placing a welding wire and a laser beam, at a certain angle, on both sides of the normal line of a substrate, the laser beam is applied on the welding wire to generate a deep penetration keyhole, the welding wire absorbs the laser energy so as to be heated and melted in a deep penetration mode and transits to a surface of the substrate to form a cladding layer; the laser beam irradiating the substrate surface after passing through the filament, and preheating the substrate surface in a heat conduction mode. The method can improve the forming efficiency of the wire feeding laser additive manufacturing, and the melting rate of the welding wire is greatly improved by using the deep penetration mode. Heating and melting a workpiece in the heat conduction mode can effectively avoid the occurrence of defects such as keyhole-induced porosity. A system for the laser additive manufacturing based on the keyhole effects is also discussed.
Inventors:
XIAO RONGSHI (CN)
HUANG TING (CN)
WU QIANG (CN)
ZOU JIANGLIN (CN)
XU JIEJIE (CN)
HUANG TING (CN)
WU QIANG (CN)
ZOU JIANGLIN (CN)
XU JIEJIE (CN)
Application Number:
PCT/CN2019/070902
Publication Date:
July 25, 2019
Filing Date:
January 08, 2019
Export Citation:
Assignee:
UNIV BEIJING TECHNOLOGY (CN)
International Classes:
B23K26/342; B33Y10/00
Foreign References:
| CN108188581A | 2018-06-22 | |||
| JP2008093718A | 2008-04-24 | |||
| CN104551391A | 2015-04-29 | |||
| CN107414302A | 2017-12-01 | |||
| CN107538134A | 2018-01-05 | |||
| CN106001823A | 2016-10-12 |
Other References:
W.SYEDPINKERTON A JLI L.: "A comparative study of wire feeding and powder feeding in direct diode laser deposition for rapid prototyping[J", APPLIED SURFACE SCIENCE, vol. 247, no. 1, 2005, pages 268 - 276
FAMING SHEN: "Characteristics of wire-based laser additive manufacturing for stainless steel[D", 2015, HARBIN INSTITUTE OF TECHNOLOGY
See also references of EP 3741495A4
FAMING SHEN: "Characteristics of wire-based laser additive manufacturing for stainless steel[D", 2015, HARBIN INSTITUTE OF TECHNOLOGY
See also references of EP 3741495A4
Attorney, Agent or Firm:
WITTPAT INTELLECTUAL PROPERTY LAW FIRM (CN)
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