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1. (WO2018086887) APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE WITH IMPROVED GAS FLOW
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Pub. No.: WO/2018/086887 International Application No.: PCT/EP2017/077295
Publication Date: 17.05.2018 International Filing Date: 25.10.2017
Chapter 2 Demand Filed: 03.09.2018
IPC:
B22F 3/105 (2006.01) ,B29C 67/00 (2017.01) ,B29C 64/153 (2017.01) ,B29C 64/20 (2017.01)
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
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
67
Shaping techniques not covered by groups B29C39/-B29C65/93
[IPC code unknown for B29C 64/153][IPC code unknown for B29C 64/20]
Applicants:
SLM SOLUTIONS GROUP AG [DE/DE]; Estlandring 4 23560 Lübeck, DE
Inventors:
HUEBINGER, Isabell; DE
WILKES, Jan; DE
IQBAL, Naveed; DE
WIESNER, Andreas; DE
GIESER, Eduard; DE
Agent:
SCHICKER, Silvia; DE
Priority Data:
16198446.311.11.2016EP
Title (EN) APPARATUS FOR PRODUCING A THREE-DIMENSIONAL WORK PIECE WITH IMPROVED GAS FLOW
(FR) APPAREIL DE PRODUCTION D'UNE PIÈCE TRIDIMENSIONNELLE À FLUX DE GAZ AMÉLIORÉ
Abstract:
(EN) An apparatus (10) comprises a process chamber (12) accommodating a carrier (14) for receiving a raw material powder. An irradiation device (16) of the apparatus (10) is configured to selectively irradiate electromagnetic or particle radiation onto the raw material powder on the carrier (14) in order to produce a work piece by an additive layer construction method, wherein a transmission element (22) allows the transmission of the electromagnetic or particle radiation into the process chamber (12). The apparatus (10) further comprises a gas inlet (26) and a gas outlet (32) for supplying and discharging gas to and from the process chamber (12) which are configured to generate a protective gas stream (Fl, F2) for protecting the transmission element (22) from being contaminated by impurities present in the process chamber (12). The gas inlet (26) comprises a gas permeable, porous component (36) forming a gas inlet area (A).
(FR) L'invention concerne un appareil (10) comprenant une chambre de traitement (12) accueillant un support (14) permettant de recevoir une poudre de matière première. Un dispositif de rayonnement (16) de l'appareil (10) est configuré pour le rayonnement sélectif d'un rayonnement électromagnétique ou particulaire sur la poudre de matière première sur le support (14) afin de produire une pièce par un procédé de construction de couche additive, un élément de transmission (22) permettant la transmission du rayonnement électromagnétique ou particulaire dans la chambre de traitement (12). L'appareil (10) comprend en outre une admission de gaz (26) et une évacuation de gaz (32) permettant de fournir et d'évacuer un gaz à et de la chambre de traitement (12) qui sont configurées pour générer un flux de gaz protecteur (Fl, F2) permettant d'éviter que l'élément de transmission (22) ne soit contaminé par des impuretés présentes dans la chambre de traitement (12). L'admission de gaz (26) comprend un élément poreux perméable aux gaz (36) formant une zone d'admission de gaz (A).
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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)