PRODUCTION METHOD FOR THREE-DIMENSIONAL SHAPED OBJECT AND THREE-DIMENSIONAL SHAPED OBJECT OBTAINED BY SAID METHOD

WIPO Patent Application WO/2021/246098

A1

[Problem] To provide a configuration pertaining to: a three-dimensional shaped object for a lattice region having a uniform shape and firm bonding and an outer frame region disposed all around the lattice region; and a production method for the three-dimensional shaped object. [Solution] This method is for producing a three-dimensional shaped object on the basis of repetition of a step for forming a powder layer 3 and sintering the powder layer 3 using laser or electron beams, the method comprising: forming a sintered layer 41 in a lattice region 1 by scanning the lattice region 1 a plurality of times using the beam having a predetermined spot diameter in a one-side direction at predetermined intervals, and thereafter, forming a sintered layer 42 in the lattice region 1 by scanning the lattice region 1 in an other-side direction intersecting with the one-side direction in a similar manner; and forming a continuous sintered layer 43 in an outer frame region 2 by scanning the entire lattice region 1, which is surrounded by an inner line and an outer line, using the beam having the predetermined spot diameter. This three-dimensional shaped object is based on the method.

AMAYA KOICHI (JP)
MIDORIKAWA TETSUSHI (JP)
TOMITA SEIICHI (JP)
TANAKA RYUZO (JP)

PCT/JP2021/017264

December 09, 2021

April 30, 2021

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MATSUURA MACHINERY CORP (JP)

B33Y10/00; B22F3/105; B22F3/16; B29C64/153; B29C64/268; B33Y80/00

WO2017154148A1

2017-09-14

JP6532180B1	2019-06-19
JP2003321704A	2003-11-14
JP5776004B2	2015-09-09
JPH0232180B2	1990-07-18

See also references of EP 3950353A4

AKAO Naoto (JP)

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