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1. (WO2017149229) CORE FOR CASTING A BLADE OF A TURBOMACHINE
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Pub. No.: WO/2017/149229 International Application No.: PCT/FR2017/050423
Publication Date: 08.09.2017 International Filing Date: 27.02.2017
IPC:
B22C 9/10 (2006.01) ,F01D 5/18 (2006.01) ,F01D 5/20 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
C
FOUNDRY MOULDING
9
Moulds or cores; Moulding processes
10
Cores; Manufacture or installation of cores
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12
Blades
14
Form or construction
18
Hollow blades; Heating, heat-insulating, or cooling means on blades
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
D
NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
5
Blades; Blade-carrying members; Heating, heat-insulating, cooling, or antivibration means on the blades or the members
12
Blades
14
Form or construction
20
Specially-shaped blade tips to seal space between tips and stator
Applicants:
SAFRAN AIRCRAFT ENGINES [FR/FR]; 2 boulevard du Général Martial Valin 75015 PARIS, FR
SAFRAN [FR/FR]; 2 Boulevard du Général Martial Valin 75015 PARIS, FR
Inventors:
HUCHIN, Patrick, Emilien, Paul, Emile; FR
VOLLEBREGT, Matthieu, Jean, Luc; FR
ROLLINGER, Adrien, Bernard, Vincent; FR
BECHELANY, Mirna; FR
Agent:
GUERRE, Fabien; FR
Priority Data:
165170001.03.2016FR
Title (EN) CORE FOR CASTING A BLADE OF A TURBOMACHINE
(FR) NOYAU POUR LE MOULAGE D'UNE AUBE DE TURBOMACHINE
Abstract:
(EN) The invention relates to a core (16) for casting a blade of a turbomachine, said core (16) comprising a first part (17) for defining a first cavity and a second part (18) of which at least one portion (19) defines a second cavity located between the first cavity and the tip of the blade, wherein: - said portion (19) of the second part (18) includes a through-hole that ends opposite the first part (17) so as to define, in the cast blade, an outer face of a duct for removing dust from the first cavity; - an alumina pin (27) which is secured to the end face (28) of the first part (17) extends into the through-hole to define the inner face of the duct; - centering means (29) are placed between the pin (27) and the through-hole so as to center the pin in relation to the through-hole, said centering means (29) being made of a material that is intended to dissolve before the blade is cast around the core (16).
(FR) L'invention concerne un noyau (16) pour le moulage d'une aube de turbomachine, ce noyau (16) comprenant un premier élément (17) pour délimiter une première cavité et un second élément (18) dont au moins une portion (19) délimite une seconde cavité située entre la première cavité et le sommet de l'aube, dans lequel : - la portion (19) du second élément (18) comprend un trou traversant qui débouche au droit du premier élément (17) pour délimiter dans l'aube moulée une face externe d'un conduit de dépoussiérage de la première cavité; - une tige d'alumine (27) s'étendant dans le trou traversant en étant fixée à la face d'extrémité (28) du premier élément (17), pour délimiter la face interne du conduit; - des moyens de centrage (29) interposés entre la tige (27) et le trou traversant pour centrer cette tige par rapport au trou, ces moyens de centrage (29) étant en un matériau destiné à être dissous avant coulage de l'aube autour dudit noyau (16).
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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, 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: French (FR)
Filing Language: French (FR)