Title:
THREE-DIMENSIONAL MANUFACTURING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/193744
Kind Code:
A1
Abstract:
Provided is a three-dimensional manufacturing device that can easily carry out sufficient preheating of powder material even when manufacturing large three-dimensional objects. A three-dimensional manufacturing device 100 is provided with: an electron gun 2 that irradiates powder material with an electron beam EB1; a manufacturing region forming unit 3 that is provided on the bottom surface 1a of an vacuum chamber 1 and wherein the powder material is spread and a powder layer 7 is formed; a pedestal 4 that is embedded in the powder layer 7 in an increased temperature state and preheats the powder material by thermal migration; and a radiation shield 10 that covers the manufacturing region forming unit 3 and is heated by thermal radiation from the pedestal 4. The powder material is preheated by thermal migration from the manufacturing region forming unit 3 and the radiated heat from the heated radiation shield 10.
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Inventors:
MARUKO TAKAAKI (JP)
MONODANE TAKESHI (JP)
MONODANE TAKESHI (JP)
Application Number:
PCT/JP2018/008939
Publication Date:
October 25, 2018
Filing Date:
March 08, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B22F3/16; B22F3/105; B29C64/153; B29C64/295; B33Y30/00
Foreign References:
| US20160067778A1 | 2016-03-10 | |||
| US20020090313A1 | 2002-07-11 | |||
| JP2001522326A | 2001-11-13 | |||
| JP2016534902A | 2016-11-10 | |||
| JP2015183245A | 2015-10-22 |
Attorney, Agent or Firm:
OIWA Masuo et al. (JP)
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