EP 3983122 A1 20220420 - METHOD FOR PREPARING A METAL POWDER FOR AN ADDITIVE MANUFACTURING PROCESS, AND USE OF SUCH A POWDER
Title (en)
METHOD FOR PREPARING A METAL POWDER FOR AN ADDITIVE MANUFACTURING PROCESS, AND USE OF SUCH A POWDER
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES METALLPULVERS FÜR EIN GENERATIVES FERTIGUNGSVERFAHREN UND VERWENDUNG EINES SOLCHEN PULVERS
Title (fr)
MÉTHODE DE PRÉPARATION D'UNE POUDRE MÉTALLIQUE DESTINÉE A UN PROCÉDÉ DE FABRICATION ADDITIVE, ET UTILISATION D'UNE TELLE POUDRE
Publication
Application
Priority
- FR 1908894 A 20190802
- FR 2020051411 W 20200731
Abstract (en)
[origin: CA3144471A1] The present invention concerns a method for preparing a metal powder for an additive manufacturing process involving the near-infrared laser beam sweeping of a powder bed, characterized in that the method comprises: an initial step of selecting a powder having an optical reflectivity of more than 70% for a wavelength in a range between 800 and 1500 nm; then a step of treating said powder, which is different from a grafting of particles and which induces physical and/or chemical surface modification of the particles (4) of said powder so as to reduce its optical reflectivity at the given wavelength. The invention also concerns the use of such a powder, of which the particles (4) after treatment have a median particle size d50 of between 5 and 50 µm.
IPC 8 full level
B01J 13/04 (2006.01); B01J 13/22 (2006.01); B22F 1/065 (2022.01); B22F 1/145 (2022.01); B22F 1/17 (2022.01); B29C 64/153 (2017.01); B33Y 70/00 (2020.01); C22C 1/00 (2006.01)
CPC (source: EP KR US)
B01J 13/04 (2013.01 - EP KR US); B01J 13/22 (2013.01 - EP KR); B22F 1/065 (2022.01 - EP KR US); B22F 1/145 (2022.01 - EP KR US); B22F 1/16 (2022.01 - KR); B22F 1/17 (2022.01 - EP KR US); B22F 10/28 (2021.01 - EP KR US); B22F 10/34 (2021.01 - EP KR US); B33Y 40/10 (2020.01 - US); B33Y 70/00 (2014.12 - EP KR US); B22F 2301/052 (2013.01 - KR US); B22F 2301/10 (2013.01 - KR US); B22F 2301/25 (2013.01 - KR US); B22F 2304/10 (2013.01 - KR US); Y02P 10/25 (2015.11 - EP KR)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
FR 3099385 A1 20210205; FR 3099385 B1 20230331; AU 2020325777 A1 20220217; BR 112022001604 A2 20220322; CA 3144471 A1 20210211; CN 114222625 A 20220322; EP 3983122 A1 20220420; JP 2022543093 A 20221007; KR 20220037503 A 20220324; MX 2022001436 A 20220222; US 2022280999 A1 20220908; WO 2021023931 A1 20210211
DOCDB simple family (application)
FR 1908894 A 20190802; AU 2020325777 A 20200731; BR 112022001604 A 20200731; CA 3144471 A 20200731; CN 202080054827 A 20200731; EP 20820477 A 20200731; FR 2020051411 W 20200731; JP 2022506633 A 20200731; KR 20227006532 A 20200731; MX 2022001436 A 20200731; US 202017632359 A 20200731