Title:
ADDITIVE MANUFACTURING METHOD AND ADDITIVE MANUFACTURING DEVICE
Document Type and Number:
Japanese Patent JP2023083047
Kind Code:
A
Abstract:
To provide an additive manufacturing method and additive manufacturing device, capable of conducting a high-precision additive manufacturing without causing shape collapse in an overhang part even by an SLM method.SOLUTION: A three-dimensional shaped object is formed by melting and solidifying a metal powder 23 by irradiating the metal powder 23 with a laser beam LB using a powder bed fusion-type additive manufacturing method. The additive manufacturing method includes: a temporary sintering step in which an overhang part of the three-dimensional shaped object is irradiated with the laser beam LB at a first beam intensity so as to cause particles of the metal powder 23 irradiated with the laser beam LB to be partially melted and joined together; and a final melting/solidification step in which the irradiated region irradiated with the laser beam in the temporary sintering step is irradiated with the laser beam LB at a second beam intensity higher than the first beam intensity so as to cause the metal powder 23 in the irradiated region to be melted and solidified.SELECTED DRAWING: Figure 4
Inventors:
HATSUDA AKIMINE
Application Number:
JP2021197145A
Publication Date:
June 15, 2023
Filing Date:
December 03, 2021
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B22F12/45; B22F10/28; B22F10/362; B22F10/364; B22F12/47; B33Y10/00; B33Y30/00
Attorney, Agent or Firm:
Patent Attorney Corporation Eiko Office
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