Title:
METHODS FOR LASER-INTEGRATED ADDITIVE MANUFACTURING AND CONNECTING BASED ON CONTROL OF MOLTEN POOL FLOW BY PULSED LASER
Document Type and Number:
WIPO Patent Application WO/2022/127942
Kind Code:
A1
Abstract:
Methods for laser-integrated additive manufacturing and connecting based on control of molten pool flow by a pulsed laser. At the same time that a continuous laser (2) is used to cause the surface of a substrate to be processed (7) and an alloy powder (4) to melt to form a molten pool area (3), a pulsed laser (1) is introduced to perform synchronous shock processing on the molten pool area (3), and a laser-integrated connection and additive manufacturing process using pulsed laser (1) control of the molten pool is executed. In the manufacturing process, molten pool morphology and molten pool flow are controlled by using a pulsed laser, thus improving the flatness of a cladding surface or a weld, adjusting the residual stress in the cladding layer, and reducing anisotropy in cladding layer and weld performance. At the same time that laser forming precision and laser connection quality improvement and residual stress improvement are achieved, the flatness and mechanical performance of cladding layers and welds are improved, helping to improve production efficiency. The invention is suitable for continuous laser additive manufacturing work for multi-pass lap joining or multi-layer stacking, and is suitable for the field of laser additive manufacturing for surface remanufacturing repair, dissimilar metal welding, or direct 3D printing forming.
Inventors:
HU YAOWU (CN)
ZHAO SHUSEN (CN)
LIN XUECHUN (CN)
LIU SHENG (CN)
ZHANG CHEN (CN)
LIU JIAN (CN)
ZHANG XIAOHAN (CN)
ZHAO SHUSEN (CN)
LIN XUECHUN (CN)
LIU SHENG (CN)
ZHANG CHEN (CN)
LIU JIAN (CN)
ZHANG XIAOHAN (CN)
Application Number:
PCT/CN2022/076048
Publication Date:
June 23, 2022
Filing Date:
February 11, 2022
Export Citation:
Assignee:
UNIV WUHAN (CN)
International Classes:
B22F10/28; B22F10/31; B22F10/50; B22F10/85; B22F12/41; B22F12/44; B22F12/90; B23K26/0622; B23K26/24; B23K26/70; B33Y10/00; B33Y30/00; B33Y40/00; B33Y50/02; C21D10/00; C23C24/10
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Attorney, Agent or Firm:
WUHAN KEHAO INTELLECTUAL PROPERTY ATTORNEYS(SPECIAL GENERAL PARTNERSHIP) (CN)
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