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Title:
THREE-DIMENSIONAL SHAPING DEVICE AND THREE-DIMENSIONAL SHAPING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/049832
Kind Code:
A1
Abstract:
This three-dimensional shaping device shapes a three-dimensional object by irradiating a powder material with an electron beam and thereby melting the powder material. The three-dimensional shaping device is provided with an electron beam-emitting unit which emits the electron beam to melt the powder material for shaping the object and also pre-heats the powder material by irradiating the powder material with the electron beam prior to shaping the object. When irradiating the powder material with the electron beam in order to preheat the powder material, the electron beam-emitting unit moves the irradiation position of the electron beam in a spiral shape.

Inventors:
NAKAYAMA Yuichiro (1-1Toyosu 3-chome, Koto-k, Tokyo 10, 〒1358710, JP)
HAYASHI Daiki (1-1Toyosu 3-chome, Koto-k, Tokyo 10, 〒1358710, JP)
Application Number:
JP2018/032642
Publication Date:
March 14, 2019
Filing Date:
September 03, 2018
Export Citation:
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Assignee:
IHI CORPORATION (1-1Toyosu 3-chome, Koto-ku Tokyo, 10, 〒1358710, JP)
International Classes:
B22F3/16; B22F3/105; B33Y10/00; B33Y30/00
Domestic Patent References:
WO2017126073A12017-07-27
Foreign References:
JP2016502603A2016-01-28
JP2016522761A2016-08-04
JP2009544501A2009-12-17
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA 9th fl. 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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