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1. (WO2019045733) PARTICLE AGGLOMERATION FOR ADDITIVE METAL MANUFACTURING
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Pub. No.: WO/2019/045733 International Application No.: PCT/US2017/049669
Publication Date: 07.03.2019 International Filing Date: 31.08.2017
IPC:
B33Y 70/00 (2015.01) ,B22F 1/00 (2006.01) ,B22F 3/00 (2006.01) ,B22F 3/10 (2006.01) ,B22F 3/12 (2006.01)
[IPC code unknown for B33Y 70]
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
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
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
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
12
Both compacting and sintering
Applicants:
DESKTOP METAL, INC. [US/US]; 63 3rd Avenue Burlington, MA 01803, US
Inventors:
BOSE, Animesh; US
MYERBERG, Jonah Samuel; US
Agent:
MELLO, John Paul; US
HAIGHT, George; US
BASSOLINO, Thomas, J.; US
MELLO, John, Paul; US
MAZZARESE, Robert, A.; US
Priority Data:
Title (EN) PARTICLE AGGLOMERATION FOR ADDITIVE METAL MANUFACTURING
(FR) AGGLOMÉRATION DE PARTICULES POUR LA FABRICATION ADDITIVE DE MÉTAL
Abstract:
(EN) Devices, systems, and methods are directed at spreading sequential layers of powder across a powder bed and applying energy to each layer to form a three-dimensional object. The powder can include granules including agglomerations of metallic particles to facilitate spreading the metallic particles in each layer. The energy can be directed to the powder to reflow the granules in each layer to bind the metallic particles in the layer to one another and to one or more adjacent layers to form the three-dimensional object. Thus, in general, the agglomeration of the metallic particles in the granules can overcome constraints associated with metallic particles that are of a size ordinarily unsuitable for flowing and/or a size that presents safety risks. By overcoming these constraints, the granules can improve formation of dense finished parts from a powder and can result in formation of unique microstructures in finished parts.
(FR) L'invention concerne des dispositifs, des systèmes et des procédés consistant à étaler des couches séquentielles de poudre sur toute l'étendue d'un lit de poudre, et à appliquer de l'énergie sur chaque couche pour former un objet tridimensionnel. La poudre peut comprendre des granules comprenant des agglomérats de particules métalliques qui facilitent l'étalement des particules métalliques dans chaque couche. L'énergie peut être dirigée vers la poudre pour refondre les granules dans chaque couche afin de lier les particules métalliques les unes aux autres dans la couche, et vers une ou plusieurs couche(s) adjacente(s) pour former l'objet tridimensionnel. Ainsi, de manière générale, l'agglomération des particules métalliques dans les granules permet d'éliminer des contraintes associées à des particules métalliques dont la taille est normalement inadéquate pour la fusion et/ou comporte des risques de sécurité. L'élimination de ces contraintes permet aux granules d'améliorer la formation de pièces finies denses à partir d'une poudre, et peuvent entraîner la formation de microstructures uniques dans des pièces finies.
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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)