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1. (WO2018226844) SYSTEMS AND METHODS FOR SOLIDIFICATION RATE CONTROL DURING ADDITIVE MANUFACTURING
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Pub. No.: WO/2018/226844 International Application No.: PCT/US2018/036278
Publication Date: 13.12.2018 International Filing Date: 06.06.2018
IPC:
B22F 3/105 (2006.01) ,B22F 3/16 (2006.01) ,B33Y 30/00 (2015.01) ,B33Y 40/00 (2015.01)
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
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
16
in successive or repeated steps
[IPC code unknown for B33Y 30][IPC code unknown for B33Y 40]
Applicants:
DMG MORI ADVANCED SOLUTIONS, INC. [US/US]; 2400 Huntington Blvd. Hoffman Estates, IL 60192, US
Inventors:
HYATT, Gregory, A.; US
BENNETT, Jennifer, L.; US
Agent:
MATTHIAS, Brent, E.; US
Priority Data:
62/515,87706.06.2017US
Title (EN) SYSTEMS AND METHODS FOR SOLIDIFICATION RATE CONTROL DURING ADDITIVE MANUFACTURING
(FR) SYSTÈMES ET PROCÉDÉS DE COMMANDE DU TAUX DE SOLIDIFICATION PENDANT LA FABRICATION ADDITIVE
Abstract:
(EN) Apparatus and methods of forming a three-dimensional build object on a substrate include directing an energy beam onto the substrate to form a melt pool, wherein the energy beam traverses the substrate in a process direction at a process speed, depositing additive material into the melt pool, and measuring energy emitted by the melt pool. A thermal signature of the melt pool is determined based on the measured energy. The method further includes identifying a liquidus region of the melt pool, a solidus region surrounding the melt pool, and a transitional region of the melt pool based on the thermal signature. A physical parameter of the transitional region of the melt pool is quantified, an actual solidification rate is determined based on a comparison of the physical parameter of the transitional region and the process speed, and a process parameter is adjusted based on the actual solidification rate.
(FR) L'invention concerne un appareil et des procédés de formation d'un objet de construction tridimensionnel sur un substrat, consistant à diriger un faisceau d'énergie sur le substrat pour former un bain de fusion, le faisceau d'énergie traversant le substrat dans une direction de traitement à une vitesse de traitement, le dépôt d'un matériau additif dans le bain de fusion, et la mesure de l'énergie émise par le bain de fusion. Une signature thermique du bain de fusion est déterminée en se basant sur l'énergie mesurée. Le procédé consiste en outre à identifier une région de liquidus du bain de fusion, une région de solidus entourant le bain de fusion et une région de transition du bain de fusion en se basant sur la signature thermique. Un paramètre physique de la région de transition du bain de fusion est quantifié, un taux de solidification réel est déterminé en se basant sur une comparaison du paramètre physique de la région de transition et de la vitesse de traitement, et un paramètre de traitement est ajusté en fonction du taux de solidification réel.
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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)