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1. (WO2019005602) Large Scale High Speed Precision Powder Bed Fusion Additive Manufacturing
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Pub. No.: WO/2019/005602 International Application No.: PCT/US2018/038956
Publication Date: 03.01.2019 International Filing Date: 22.06.2018
IPC:
B22F 3/105 (2006.01) ,B23K 15/00 (2006.01) ,B23K 15/02 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
F
WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
3
Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor
10
Sintering only
105
by using electric current, laser radiation or plasma
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
15
Electron-beam welding or cutting
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
15
Electron-beam welding or cutting
02
Control circuits therefor
Applicants:
ABLER, Jeffrey Alan [US/US]; US
Inventors:
ABLER, Jeffrey Alan; US
Agent:
SERBIN, Gary; US
Priority Data:
62/527,44830.06.2017US
Title (EN) Large Scale High Speed Precision Powder Bed Fusion Additive Manufacturing
(FR) FABRICATION ADDITIVE PAR FUSION DE LIT DE POUDRE DE PRÉCISION À GRANDE VITESSE ET GRANDE ÉCHELLE
Abstract:
(EN) A method and system are disclosed for powder bed fusion additive manufacturing that enables faster processing speeds, larger work volumes, and greater precision relative to the state of the art in that field. A two dimensional pattern of laser beams is scanned across each layer of a powder bed with the power of the beams independently controlled in a manner such that the three dimensional temperature distribution of the material being processed and the adjacent previously processed material maintain a maximum value between the points of complete melting and boiling for the given material, while simultaneously controlling the capillary flow of the molten material and thus the melt pool geometry by managing its surface tension through the induced thermal gradients on the surface of the molten material.
(FR) L'invention concerne un procédé et un système pour la fabrication additive par fusion de lit de poudre qui permet des vitesses de traitement plus rapides, des volumes de travail plus grands et une plus grande précision par rapport à l'état de la technique dans ce domaine. Un motif bidimensionnel de faisceaux laser est balayé à travers chaque couche d'un lit de poudre, la puissance des faisceaux étant commandée indépendamment de telle sorte que la distribution de température en trois dimensions du matériau en cours de traitement et du matériau adjacent précédemment traité maintienne une valeur maximale entre les points de fusion complète et d'ébullition pour le matériau donné, tout en commandant simultanément le flux capillaire du matériau fondu et donc la géométrie du bain de fusion en gérant sa tension de surface à travers les gradients thermiques induits sur la surface du matériau fondu.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)