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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/131059
Kind Code:
Provided is layer shaping technology for a laser powder build-up scheme that uses powder for layering, the technology making it possible to increase the accuracy regarding shape, strength, etc. and quality of the layered article through control of the layer shaping. This layer shaping device comprises: a control unit for controlling the layer shaping; a laser beam emission mechanism for emitting a laser beam; a powder supply mechanism for supplying powder for layering; a sensor for detecting the area of a molten pool, which is a mixture containing a base material and the powder for layering; and a sensor for detecting or a specific heat calculation unit for calculating the specific heat of a layered article, which is a mixture containing a base material and the powder for layering. The control unit has a molten pool control target value calculation unit for calculating a control target value for the area of the molten pool in accordance with the specific heat, and an output control unit that performs feedback control by calculating an output value of the laser beam so as to approach the control target value for the area of the molten pool.

KUNITOMO, Kenichiro (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SEKIYAMA, Nobuya (INC 15-12, Nishi-Shimbashi 2-chome, Minato-k, Tokyo 10, 〒1058410, JP)
KOSEKI, Shuho (2-70, Konan 1-chome,Minato-k, Tokyo 24, 〒1088224, JP)
FURUYA, Tadashi (2-70, Konan 1-chome,Minato-k, Tokyo 24, 〒1088224, JP)
Application Number:
Publication Date:
July 04, 2019
Filing Date:
December 07, 2018
Export Citation:
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HITACHI METALS, LTD. (2-70, Konan 1-chomeMinato-k, Tokyo 24, 〒1088224, JP)
International Classes:
B22F3/105; B22F3/16; B28B1/30; B29C64/153; B29C64/393; B33Y10/00; B33Y30/00; B33Y50/02
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (3F Shinjuku Gyoen Bldg, 3-10 Shinjuku 2-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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