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1. (WO2019045923) HIGH QUALITY SPHERICAL POWDERS FOR ADDITIVE MANUFACTURING PROCESSES ALONG WITH METHODS OF THEIR FORMATION
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Pub. No.: WO/2019/045923 International Application No.: PCT/US2018/044089
Publication Date: 07.03.2019 International Filing Date: 27.07.2018
IPC:
B22F 9/14 (2006.01) ,B22F 1/00 (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
9
Making metallic powder or suspensions thereof; Apparatus or devices specially adapted therefor
02
using physical processes
14
using electric discharge
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
1
Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition
Applicants:
GENERAL ELECTRIC COMPANY [US/US]; 1 River Road Schenectady, NY 12345, US
Inventors:
KELKAR, Rajendra, Madhukar; US
Agent:
EVERBECK, Brian, P.; US
VACCA, Rita, D.; US
KACHUR, Pamela, A.; US
ANDES, William, Scott; US
Priority Data:
15/962,21625.04.2018US
62/551,98130.08.2017US
Title (EN) HIGH QUALITY SPHERICAL POWDERS FOR ADDITIVE MANUFACTURING PROCESSES ALONG WITH METHODS OF THEIR FORMATION
(FR) POUDRES SPHÉRIQUES DE HAUTE QUALITÉ POUR PROCÉDÉS DE FABRICATION ADDITIVE AINSI QUE LEURS PROCÉDÉS DE FORMATION
Abstract:
(EN) Methods for forming a high-quality powder from a feedstock powder of feedstock particles having irregular shapes are provided. The method includes exposing the feedstock powder to a plasma field to form a treated powder of treated particles having a more spherical shape than the feedstock particles. Prior to the plasma field exposure, the feedstock particles have an oxidized layer thereon as a result from previous exposure to water. After exposure to the plasma field, the treated particles are substantially free from an oxidized layer.
(FR) L'invention concerne des procédés de formation d'une poudre de haute qualité à partir d'une poudre de matière première de particules de matière première ayant des formes irrégulières. Le procédé comprend l'exposition de la poudre de matière première à un champ de plasma pour former une poudre traitée de particules traitées ayant une forme plus sphérique que les particules de matière première. Avant l'exposition au champ de plasma, les particules de matière première ont une couche oxydée sur celle-ci suite à une exposition précédente à l'eau. Après l'exposition au champ de plasma, les particules traitées sont sensiblement exemptes d'une couche oxydée.
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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)