EP1623794B1 - Dispositif pour le grenaillage de précontrainte de surfaces des pièces - Google Patents

Dispositif pour le grenaillage de précontrainte de surfaces des pièces Download PDF

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Publication number
EP1623794B1
EP1623794B1 EP05016117A EP05016117A EP1623794B1 EP 1623794 B1 EP1623794 B1 EP 1623794B1 EP 05016117 A EP05016117 A EP 05016117A EP 05016117 A EP05016117 A EP 05016117A EP 1623794 B1 EP1623794 B1 EP 1623794B1
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EP
European Patent Office
Prior art keywords
processing chamber
arms
gas turbine
section
oscillating
Prior art date
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Active
Application number
EP05016117A
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German (de)
English (en)
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EP1623794A1 (fr
Inventor
Erwin Dr. Bayer
Thomas Dautl
Thomas Peschke
Holger Polanetzki
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.)
MTU Aero Engines AG
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MTU Aero Engines GmbH
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Publication date
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Publication of EP1623794A1 publication Critical patent/EP1623794A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/005—Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/08—Devices for generating abrasive blasts non-mechanically, e.g. of metallic abrasives by means of a magnetic field or by detonating cords
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S451/00—Abrading
    • Y10S451/91—Ultrasonic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/71—Vibrating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/47—Burnishing
    • Y10T29/479—Burnishing by shot peening or blasting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/4932—Turbomachine making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making

Definitions

  • the invention relates to a device for surface blasting, in particular for ultrasonic shot peening, of components, in particular gas turbine components, according to the preamble of patent claim 1.
  • Gas turbines in particular aircraft engines, have, in particular in the area of a compressor and a turbine, at least one rotor equipped with rotating blades, wherein the rotating rotor blades of the gas turbine are either anchored via profiled blade feet in recesses of the gas turbine rotor or are an integral part of a gas turbine rotor. If the blades are anchored via blade roots in corresponding recesses of the rotor, the blade feet are profiled according to either the so-called fir tree design or the so-called dove tail design.
  • the preferably fir-tree-profiled or dovetail-profiled surfaces of a blade root of a gas turbine blade are also referred to as support flanks or wings.
  • shot peening As a surface treatment method for solidifying components, in particular gas turbine components such as gas turbine blades, preferably shot peening is used.
  • conventional shot peening a significant surface roughening at the blasted surfaces can occur.
  • the US 2002/0042978 A1 relates to a method and apparatus for surface blasting of opposing surfaces on thin-walled components, particularly on blades of integrally bladed gas turbine rotors by ultrasonic shot peening.
  • the bladed rotor is rotated about a vertical or horizontal axis, each moving a portion of the blades through a processing chamber.
  • FIG. 2 of this document two ultrasonic sonotrodes with a vertical jet direction are arranged on two horizontal, vertically opposing walls of the processing chamber.
  • the blades can be processed simultaneously from opposite sides.
  • Figure 10 of this document shows a comparable arrangement. In an arrangement according to FIG.
  • sonotrodes with a horizontal jet direction could also be arranged on vertical walls of the processing chamber, the bottom of the processing chamber forming a third, horizontal wall. Nevertheless, in such an arrangement, the ball movement including reflection would not be optimal.
  • the present invention is based on the problem to provide a novel device for surface blasting, in particular for ultrasonic shot peening, of components.
  • the processing chamber is W-shaped in cross-section, with two substantially vertically extending legs and two substantially horizontally extending legs, wherein at least the vertically extending legs of the processing chamber are formed by vibrating surfaces of a respective vibrator.
  • the substantially horizontally extending legs may be formed as surfaces of a respective vibrator or as injectors, wherein the injectors move the balls back onto the vibrating, substantially vertically extending legs.
  • the device according to the invention for surface blasting of components, a significantly better quality of machining of the surfaces of a component to be machined can be achieved compared to the devices known from the prior art.
  • the effectiveness in surface blasting is increased, on the other hand, inadmissible deformations of the thin-walled component sections which are to be blasted are avoided, in particular in the case of thin-walled components.
  • even thin-walled disks with so-called wings on integrally bladed gas turbine rotors can be bombarded with high intensity during ultrasonic shot peening without unduly deforming these complex-shaped components during surface blasting.
  • the cross-sectionally W-shaped processing chamber of two outer, substantially vertically extending long legs and two inner, substantially horizontally extending short leg is limited, each of the legs is formed by a vibrating surface of a respective vibrator , Preferably, a further vibrating surface of a vibrator is positioned in transition regions between outer, long legs and inner, short legs or in low points of the processing chamber having a W-shaped cross-section, or an injector for the balls is provided.
  • Fig. 1 shows a highly schematic of an inventive device 10 for ultrasonic shot peening in conjunction with a gas turbine blade 11, which is to radiate in the inventive device 10 on profiled support flanks or wings 12 and 13 of a blade root 14.
  • the gas turbine blade 11 projects with the blade root 14 into a processing chamber 15 provided by the device according to the invention, wherein an airfoil 16 of the gas turbine blade 11, which is not to be processed in FIG. 1, emerges from the processing chamber 15 of the device 10 according to the invention protrudes.
  • the processing chamber 15 is W-shaped in cross-section or characterized by a W-profile.
  • the cross-sectionally W-shaped processing chamber 15 is bounded by two outer, substantially vertically extending long legs 17 and 18 and two inner, substantially horizontally extending short legs 19 and 20.
  • each of these legs 17, 18, 19 and 20 is formed by a vibrating surface of a vibrator, namely an ultrasonic sonotrode.
  • the legs 17, 18, 19 and 20 of the W-shaped processing chamber 15 are therefore the vibrating surfaces of ultrasonic sonotrodes, wherein the oscillating portion of the surfaces is visualized by double arrows.
  • the support flanks or wings 12 and 13 of the radiant blade root 14 are fir tree profiled, and the legs 17 and 18 extend substantially parallel to an envelope 22 of the tannenbauprofil believing support flanks or wings 12 and 13.
  • the device 10 according to the invention thus makes it possible to radiate the blade root 14 simultaneously from both sides, that is to say in the area of both wings.
  • the processing chamber 15, which is W-shaped in cross section, is bounded by a total of six oscillating surfaces of corresponding ultrasonic sonotrodes or by four oscillating surfaces and two injectors. In the area of the outer, long legs 17 and 18 and the inner short leg 19 and 20, an ultrasonic sonotrode is positioned in each case. On the upper side, the processing chamber 15 is closed by a cover 21.
  • the projecting into the processing chamber 15 blade root 14 can be solidified in the device according to the invention in a particularly effective and gentle manner on the support flanks or wings 12 and 13.
  • the blade root 14 can be blasted from both sides at the same time, ie simultaneously in the area of both support flanks or wings 12 and 13.
  • FIG. 2 shows the device 10 according to the invention when blasting an integrally bladed gas turbine rotor 25 in the region of a rotor disk 26.
  • protrusions 27 - also called wings - extend almost completely over the open top W profile of the processing chamber 15, so can be dispensed with a cover at the top of the processing chamber 15.
  • the rotor disk 26 is blasted on both sides.
  • FIG. 3 shows the device 10 according to the invention when blasting an airfoil 16 of an integrally bladed gas turbine rotor 25. Also, airfoils 16 can be radiated effectively and at the same time gently by means of the device 10 according to the invention.
  • FIG. 4 shows the device 10 according to the invention when blasting the integrally bladed gas turbine rotor 25 in the region of a thin-walled wing 27 and a sealing fin 29.
  • the device 10 of FIG. 4 differs from the devices 10 of FIGS. 1 to 3 only in that Embodiment of Fig. 4, the two outer, long legs 17 and 18 are substantially parallel to each other. This W-shaped profile is particularly advantageous when blasting thin-walled wings.
  • a device for surface blasting of components wherein a processing chamber of the device has a W-profile or V-profile or in cross-section W-shaped or V-shaped, and wherein at least in the region of the substantially vertical legs of the profile vibrating surfaces of ultrasonic sonotrodes are positioned.
  • vibrating surfaces of ultrasonic sonotrodes or injectors are also positioned in the transition region between the outer and the inner legs, ie at the lowest point of the profiles.
  • the device according to the invention is preferably used for blasting thin-walled gas turbine components, in particular for blasting gas turbine blades in the area of their blade roots or blades, and for blasting integrally bladed gas turbine rotors in the area of the rotor disks and blades of the same.

Claims (9)

  1. Dispositif pour le grenaillage de surfaces, en particulier pour le grenaillage par ultrasons avec projection de billes, de pièces d'ouvrage, en particulier de pièces de turbines à gaz, comportant au moins deux vibrateurs, munis d'une surface vibrante, en particulier avec au moins deux sonotrodes à ultrasons, une chambre de traitement, destinée à recevoir une partie à grenailler de la pièce d'ouvrage à traiter, étant raccordée aux surfaces vibrantes des vibrateurs, caractérisé en ce que la chambre de traitement (15) est réalisée avec une section en forme de W, avec deux branches (17, 18) orientées sensiblement verticalement et deux branches (19, 20) orientées sensiblement horizontalement et formant une surélévation en coupole, sachant qu'au moins les branches (17, 18) sensiblement verticales de la chambre de traitement (15) réalisée avec une section en forme de W sont formées par les surfaces vibrantes de chacun des vibrateurs.
  2. Dispositif selon la revendication 1, caractérisé en ce que la chambre de traitement (15) réalisée avec une section en forme de W est délimitée par deux longues branches (17, 18) extérieures, orientées sensiblement verticalement, et deux courtes branches (19, 20) intérieures, orientées sensiblement horizontalement, chacune des branches (17, 18, 19, 20) étant formée par une surface vibrante de chacun des vibrateurs.
  3. Dispositif selon la revendication 2, caractérisé en ce que respectivement une surface vibrante supplémentaire d'un vibrateur ou un injecteur est positionné dans les zones de transition (23, 24) entre les longues branches (17, 18) extérieures et les courtes branches (19, 20) intérieures de la chambre de traitement (15) réalisée avec une section en forme de W.
  4. Dispositif selon la revendication 3, caractérisé en ce que les surfaces vibrantes ou les injecteurs, positionnés dans les zones de transition (23, 24), sont agencés dans des points bas du profil en W de la chambre de traitement (15).
  5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que la chambre de traitement (15) réalisée avec une section en forme de W est délimitée par six surfaces vibrantes ou par quatre surfaces vibrantes et deux injecteurs.
  6. Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les longues branches (17, 18) extérieures de la chambre de traitement (15) réalisée avec une section en forme de W sont orientées sensiblement parallèlement au contour de la surface à grenailler, plus précisément à une enveloppante (22) du contour de la surface à grenailler de la partie de la pièce d'ouvrage à traiter, s'engageant dans la chambre de traitement (15).
  7. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la chambre de traitement (15) réalisée avec une section en forme de W est délimitée vers le haut par un couvercle (21), la pièce d'ouvrage passant à travers le couvercle (21) avec la partie à grenailler et s'engageant dans la chambre de traitement (15) avec la partie à grenailler.
  8. Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 7, pour le grenaillage par ultrasons avec projection de billes, simultanément sur deux faces de pièces d'ouvrage, en particulier de pièces de turbines à gaz.
  9. Utilisation selon la revendication 8, pour le grenaillage par ultrasons avec projection de billes, simultanément sur deux faces d'aubes de turbines à gaz ou d'aubage intégral de rotors de turbines à gaz, de préférence dans la zone des parties à paroi mince de ceux-ci.
EP05016117A 2004-08-05 2005-07-25 Dispositif pour le grenaillage de précontrainte de surfaces des pièces Active EP1623794B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004037954A DE102004037954A1 (de) 2004-08-05 2004-08-05 Vorrichtung zum Oberflächenstrahlen von Bauteilen

Publications (2)

Publication Number Publication Date
EP1623794A1 EP1623794A1 (fr) 2006-02-08
EP1623794B1 true EP1623794B1 (fr) 2007-07-18

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Country Status (3)

Country Link
US (1) US8091192B2 (fr)
EP (1) EP1623794B1 (fr)
DE (2) DE102004037954A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US9506943B2 (en) 2011-11-07 2016-11-29 Beckman Coulter, Inc. Aliquotter system and workflow
DE102018126181A1 (de) 2018-10-22 2020-04-23 Schaeffler Technologies AG & Co. KG Verfahren zur Bearbeitung eines Lagerrings und zur Herstellung eines Wälzlagers

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DE102004059592B4 (de) * 2004-12-10 2014-09-04 MTU Aero Engines AG Verfahren zum Oberflächenstrahlen von Hohlräumen, insbesondere von Hohlräumen an Gasturbinen
DE102006016949A1 (de) * 2006-04-11 2007-10-25 Mtu Aero Engines Gmbh Verfahren zum Herstellen eines Bauteils
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DE102006058674B4 (de) * 2006-12-13 2010-11-04 Mtu Aero Engines Gmbh Vorrichtung und Verfahren zum Oberflächenstrahlen eines Rotors einer Gasturbine
DE102006058675A1 (de) * 2006-12-13 2008-06-19 Mtu Aero Engines Gmbh Vorrichtung und Verfahren zum Oberflächenstrahlen eines Bauteils einer Gasturbine
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DE102010001287A1 (de) * 2010-01-27 2011-07-28 Rolls-Royce Deutschland Ltd & Co KG, 15827 Verfahren und Vorrichtung zur Oberflächenverfestigung von Bliskschaufeln

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9506943B2 (en) 2011-11-07 2016-11-29 Beckman Coulter, Inc. Aliquotter system and workflow
DE102018126181A1 (de) 2018-10-22 2020-04-23 Schaeffler Technologies AG & Co. KG Verfahren zur Bearbeitung eines Lagerrings und zur Herstellung eines Wälzlagers

Also Published As

Publication number Publication date
DE502005001038D1 (de) 2007-08-30
US8091192B2 (en) 2012-01-10
EP1623794A1 (fr) 2006-02-08
DE102004037954A1 (de) 2006-03-16
US20060174483A1 (en) 2006-08-10

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