Title:
付加製造方法
Document Type and Number:
Japanese Patent JP7394032
Kind Code:
B2
Abstract:
The present disclosure provides an additive manufacturing method by which a uniform powder bed can be formed even when the interior of a chamber is depressurized and a powder bed is formed on a stage as the stage is preheated and an inert gas is supplied. An additive manufacturing method for a shaped object S includes forming a powder bed PB on a stage 51 in a chamber 10, and fusing the powder bed PB by laser emission. According to this additive manufacturing method, a pressure in the chamber 10 is reduced to a pressure equal to or higher than 8000 [Pa] and equal to or lower than 30,000 [Pa], and the powder bed PB is formed on the stage 51 as the stage 51 is preheated and an inert gas is supplied.
Inventors:
Keiji Kawanaka
Noboru Saito
Shinji Matsushita
Noboru Saito
Shinji Matsushita
Application Number:
JP2020131646A
Publication Date:
December 07, 2023
Filing Date:
August 03, 2020
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B22F3/16; B22F3/105; B29C64/153; B29C64/371; B29C64/393; B33Y10/00; B33Y50/02
Domestic Patent References:
| JP2010265521A | ||||
| JP2017105075A | ||||
| JP2017110261A | ||||
| JP2017145476A | ||||
| JP2017507820A | ||||
| JP2019142024A |
Foreign References:
| WO2020099241A1 | ||||
| US20190232429 | ||||
| CN106392067A |
Attorney, Agent or Firm:
Patent Attorney Corporation Hiraki International Patent Office
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