EP2399693B1 - Profilierter metallener Gusskern - Google Patents

Profilierter metallener Gusskern Download PDF

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Publication number
EP2399693B1
EP2399693B1 EP11250408.9A EP11250408A EP2399693B1 EP 2399693 B1 EP2399693 B1 EP 2399693B1 EP 11250408 A EP11250408 A EP 11250408A EP 2399693 B1 EP2399693 B1 EP 2399693B1
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EP
European Patent Office
Prior art keywords
thickness
core
taper
leading portion
forming
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Application number
EP11250408.9A
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English (en)
French (fr)
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EP2399693A3 (de
EP2399693A2 (de
Inventor
Daniel A. Snyder
Keith A. Santeler
Amanda J. Learned
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RTX Corp
Original Assignee
United Technologies Corp
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Application filed by United Technologies Corp filed Critical United Technologies Corp
Publication of EP2399693A2 publication Critical patent/EP2399693A2/de
Publication of EP2399693A3 publication Critical patent/EP2399693A3/de
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Publication of EP2399693B1 publication Critical patent/EP2399693B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/103—Multipart cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/22—Moulds for peculiarly-shaped castings
    • B22C9/24—Moulds for peculiarly-shaped castings for hollow articles

Claims (15)

  1. Verfahren zum Herstellen eines Feingusskerns aus einem metallenen Rohling, der eine Dicke zwischen paralleler erster und zweiter Fläche (82, 84) aufweist, die weniger ist als eine Breite und Länge quer dazu, wobei das Verfahren Folgendes umfasst:
    lokales Ausdünnen des Rohlings von mindestens einer der ersten und zweiten Fläche, wobei das lokale Ausdünnen eine Verjüngung auf einem Vorderabschnitt (62) des Refraktärmetallkerns (refractory metal core - RMC) bildet, wobei sich die Verjüngung von einer ersten Dicke (T1) von 0,005 bis 0,20 Zoll (0.13 bis 0,5 mm) über eine Verjüngungslänge (L1) von 0,040 bis 0,100 Zoll (1-2,5 mm) zu einer zweiten Dicke (T2) von 25-75 % der ersten Dicke verjüngt;
    Durchschneiden des Rohlings über die Dicke; und
    Einführen des Vorderabschnitts in einen Schlitz (72) in einem vorgeformten Keramikkern (76).
  2. Verfahren nach Anspruch 1, wobei:
    mindestens das Durchschneiden mindestens eins von Stanzen, Laserschneiden, Flüssigkeitsstrahlschneiden und Funkenerosionsbearbeitung (electrodischarge machining - EDM) umfasst.
  3. Verfahren nach Anspruch 1 oder 2, wobei:
    mindestens das lokale Ausdünnen mindestens eins von EDM, elektrochemischer Bearbeitung (electrochemical machining - ECM), Prozess der molekularen Zersetzung (molecular decomposition process - MDP) und mechanische Bearbeitung umfasst.
  4. Verfahren nach Anspruch 1, 2 oder 3, wobei:
    das Durchschneiden und das lokale Ausdünnen getrennt durchgeführt werden.
  5. Verfahren nach einem der vorhergehenden Ansprüche, wobei:
    das Durchschneiden Bilden einer Vielzahl von Durchgangsöffnungen (100, 102) umfasst.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei:
    das lokale Ausdünnen das maschinelle Bearbeiten eines Hauptabschnitts (80) und das Beibehalten eines dickeren Abschnitts (86) stromabwärts des Hauptabschnitts umfasst.
  7. Verfahren nach einem der vorhergehenden Ansprüche, das ferner Folgendes umfasst: Beschichten des Kerns.
  8. Verfahren nach einem der vorhergehenden Ansprüche, wobei:
    das lokale Ausdünnen Bilden der Verjüngung durch Ausdünnen von sowohl der ersten als auch der zweiten Fläche umfasst.
  9. Verfahren nach Anspruch 8, wobei:
    das lokale Ausdünnen gleichmäßiges Entfernen von Material von einer Druckseite entlang der Verjüngung und eines Zwischenabschnitts (80) stromabwärts davon und, entlang der Ansaugseite, Entfernen von Material nur von dem Vorderabschnitt umfasst.
  10. Verfahren nach einem der vorhergehenden Ansprüche, wobei:
    das Durchschneiden Öffnungen (100, 102) innerhalb des Rohlings bildet.
  11. Verfahren zum Feingießen, das Folgendes umfasst:
    Bilden eines Feingusskerns (60) nach einem der vorhergehenden Ansprüche;
    Formen eines musterbildenden Materials mindestens teilweise über den mindestens einen Feingusskern zum Bilden eines Musters;
    Schälen des Musters;
    Entfernen des musterbildenden Materials von dem geschälten Muster zum Bilden einer Schale;
    Einführen von einer geschmolzenen Legierung in die Schale; und
    Entfernen der Schale.
  12. Verfahren nach Anspruch 11, das zum Bilden einer Gasturbinentriebwerkkomponente verwendet wird.
  13. Verfahren nach Anspruch 11 oder 12, das verwendet wird, um eine Gasturbinentriebwerkschaufel zu bilden, wobei der Kern einen Hinterkantenauslassschlitz bildet.
  14. Feingusskern, der Folgendes umfasst:
    ein metallenes Gusskernelement (60), das Folgendes aufweist:
    einen verjüngten Vorderabschnitt (62);
    einen Zwischenabschnitt (80) stromabwärts des verjüngten Vorderabschnitts; und
    einen Hinterabschnitt (86) stromabwärts des Zwischenabschnitts und dicker als der Zwischenabschnitt; und
    einen Keramikgusskern (76), der einen Schlitz (120) aufweist, der den Vorderabschnitt aufnimmt,
    dadurch gekennzeichnet, dass sich der Vorderabschnitt von einer ersten Dicke (T1) von 0,005 bis 0,20 Zoll (0,13 bis 0,5 mm) über eine Verjüngungslänge (L1) von 0,40 bis 0,100 Zoll (1-2,5 mm) zu einer zweiten Dicke (T2) von 25-75 % der ersten Dicke erstreckt.
  15. Feingusskern nach Anspruch 14, wobei:
    entlang des Vorderabschnitts und Zwischenabschnitts eine Druckseitenfläche eine durchgehend konkave Krümmung aufweist; und
    entlang einer Ansaugseitenfläche, der Zwischenabschnitt eine im Wesentlichen durchgehende konvexe Krümmung aufweist und der Vorderabschnitt eine nicht durchgehende Krümmung aufweist, um die Verjüngung bereitzustellen.
EP11250408.9A 2010-06-25 2011-03-31 Profilierter metallener Gusskern Active EP2399693B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/823,165 US20110315336A1 (en) 2010-06-25 2010-06-25 Contoured Metallic Casting Core

Publications (3)

Publication Number Publication Date
EP2399693A2 EP2399693A2 (de) 2011-12-28
EP2399693A3 EP2399693A3 (de) 2012-07-25
EP2399693B1 true EP2399693B1 (de) 2019-05-01

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EP11250408.9A Active EP2399693B1 (de) 2010-06-25 2011-03-31 Profilierter metallener Gusskern

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US (1) US20110315336A1 (de)
EP (1) EP2399693B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130280093A1 (en) * 2012-04-24 2013-10-24 Mark F. Zelesky Gas turbine engine core providing exterior airfoil portion
US20140102656A1 (en) 2012-10-12 2014-04-17 United Technologies Corporation Casting Cores and Manufacture Methods
EP2961547A4 (de) * 2013-03-01 2016-11-23 United Technologies Corp Herstellungsverfahren für gasturbinenmotorkomponente und kern zur herstellung davon
EP3060363B1 (de) * 2013-10-24 2021-10-27 Raytheon Technologies Corporation Verlorene kernformung zur herstellung von kühlkanälen
EP3086893B1 (de) 2013-12-23 2019-07-24 United Technologies Corporation Strukturrahmen eines verlorenem kerns

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5423372A (en) * 1993-12-27 1995-06-13 Ford Motor Company Joining sand cores for making castings
AU677903B2 (en) * 1994-06-01 1997-05-08 Toyota Jidosha Kabushiki Kaisha Casting method with improved resin core removing step and apparatus for performing the method
FR2812572B1 (fr) * 2000-07-21 2003-03-07 Montupet Sa Equipement de moulage de pieces de fonderies avec des moyens perfectionnes de positionnement de noyaux de sable, et procede de positionnement associe
US6637500B2 (en) 2001-10-24 2003-10-28 United Technologies Corporation Cores for use in precision investment casting
US6929054B2 (en) 2003-12-19 2005-08-16 United Technologies Corporation Investment casting cores
US7108045B2 (en) * 2004-09-09 2006-09-19 United Technologies Corporation Composite core for use in precision investment casting
US7757745B2 (en) * 2006-05-12 2010-07-20 United Technologies Corporation Contoured metallic casting core
US8100165B2 (en) * 2008-11-17 2012-01-24 United Technologies Corporation Investment casting cores and methods
US8171978B2 (en) * 2008-11-21 2012-05-08 United Technologies Corporation Castings, casting cores, and methods

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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Publication number Publication date
EP2399693A3 (de) 2012-07-25
US20110315336A1 (en) 2011-12-29
EP2399693A2 (de) 2011-12-28

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