EP1986817A1 - Strahlkammer zum oberflächenstrahlen, insbesondere zum ultraschall kugelstrahlen von gasturbinen-bauteilen - Google Patents
Strahlkammer zum oberflächenstrahlen, insbesondere zum ultraschall kugelstrahlen von gasturbinen-bauteilenInfo
- Publication number
- EP1986817A1 EP1986817A1 EP07702443A EP07702443A EP1986817A1 EP 1986817 A1 EP1986817 A1 EP 1986817A1 EP 07702443 A EP07702443 A EP 07702443A EP 07702443 A EP07702443 A EP 07702443A EP 1986817 A1 EP1986817 A1 EP 1986817A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- blasting
- wall
- blasting chamber
- peening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005480 shot peening Methods 0.000 title claims abstract description 13
- 238000005422 blasting Methods 0.000 claims description 95
- 239000000463 material Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000012858 resilient material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- 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
- B24C5/005—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
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
- Y10T29/479—Burnishing by shot peening or blasting
Definitions
- Blasting chamber for surface blasting in particular for akischall- shot blasting of gas turbine components
- the invention relates to a blasting chamber for surface blasting, in particular for ultrasonic shot peening of gas turbine components, specified in the preamble of claim 1.
- shot peening it is possible, for example, to consolidate components or component areas of gas turbines which are subject to high stress by frictional wear or the like. It is also possible by means of this special surface processing method to minimize or largely eliminate distortions, material loadings or other defects, for example at edges of rotors or blade areas. Finally, it is possible by shot peening to post treat butt joints of repaired turbine blades or the like components.
- the plurality of turbomachine blades are to be positioned upside-down within a receiving frame in such a way that they protrude with their blade tip comprising the respective surface to be machined through an associated wall opening within the frame.
- the frame itself forms a horizontally extending upper wall portion of the blasting chamber, which is parallel to a forming a lower wall portion of the blasting chamber, horizontally extending vibration plate of a sonotrode.
- the frame within an associated compassiono réelle be set so that the blade surfaces to be machined comprehensive blade tips are arranged within the steel chamber.
- DE 10 2004 029 546 A1 discloses a blasting chamber as known in which a blade root of a gas turbine blade can be treated by an ultrasonic shot peening method.
- a fürgangso réelle is introduced within a vertically extending wall portion of the blasting chamber through which the Gasturbmenschaufel is to be inserted.
- a horizontally running lower wall area the overall substantially cubic blasting chamber is formed by a surface of a sonotrode, which is to excite ultrasonic vibrations.
- the steel balls arranged within the blasting chamber are thereby accelerated for machining the blade root.
- jet chambers are tuned very specifically to an application or the machining of a specific component.
- the jet chambers m their geometry so matched to the component to be machined or the component to be machined that let a desired quality of the machined surface can be realized.
- wall openings are provided in the respective wall region of the chamber wall or the receiving frame, which are specifically adapted to the cross section of the component to be machined.
- Object of the present invention is therefore to improve a blasting chamber of the type mentioned so that it can be adapted with little effort to different components to be machined.
- At least one wall region of the chamber wall is designed to be adjustable in order to change its geometry.
- the invention is based on the basic idea that the geometry - that is, for example, the size and / or the shape - of the blasting chamber can be adapted or approximated to the component to be machined by at least one wall region of the chamber wall being adjustable. This not only makes it possible to adapt or approximate the blasting chamber to different sizes of the components to be machined, but rather can be influenced by the appropriate adjustment of at least one wall portion of the chamber wall, for example, the distances and angles at which the blasting agent - for example, the Balls during ultrasonic shot peening - to be deflected.
- the wall regions of the chamber wall to be adjusted can be linearly displaced, adjusted at an angle or changed to produce a different free-form surface, depending on which geometry of the blasting chamber is optimal for the particular component to be machined.
- an adjustment of the geometry of the blasting chamber has been shown to be simply soubuchbar, in which the at least one wall region of the chamber wall is to be changed by inflation.
- the at least one wall region of the chamber wall is to be changed by inflation.
- the contour of the corresponding chamber wall by simply feeding or sucking a gaseous medium.
- the wall region or the chamber wall itself is designed as an inflatable cushion.
- the adjustable wall portion is truncated on an inflatable cushion and can be adjusted accordingly.
- a gaseous medium it would of course also conceivable to adjust the variable wall region of the chamber wall, for example, by a liquid medium such as oil or the like.
- the chamber wall of the blasting chamber of a flexible yielding material and in particular of a rubber material.
- the side facing the component area must be designed to be stable on the chamber wall, for example, to withstand the loads imposed by the balls during ultrasonic shot peening.
- the chamber wall may need to be correspondingly stiff, so that, for example, the balls are deflected in the desired manner on the chamber wall.
- the chamber wall is at least locally provided with a cover, casing or the like on its side facing the component area to be processed.
- the erfmdungsge felicit provided adjustable wall portion of the chamber wall may also be provided only in the region of the wall opening, through which a component area comprising the surface to be machined is carried out. In this context, it is conceivable that only a part of the wall area surrounding the wall opening or else the complete peripheral wall area is adjustable.
- the Wando réelle is thus adjustable and easily adaptable to varying sizes and geometries of different components to be machined.
- the set-up times can be reduced to a minimum when changing over to a different component geometry.
- a sliding element is provided in the contact area of the seal with the component passed through the wall opening, then it is possible in a simple manner to move the component during the surface blasting within the blasting chamber, for example to rotate in order to achieve the best possible surface of the component ,
- the surface of the sonotrode forms a wall region of the chamber wall.
- a device for determining the acoustic emission of the blasting medium is arranged within the blasting chamber, then a loss of blasting medium-by the associated change in the sound emission-can be determined in a simple manner in this way.
- a particularly advantageous blasting chamber can be achieved in that the device for replenishing is connected to the device for determining the acoustic emission of the blasting material. If, accordingly, a loss of blasting agent is detected by means of the device for determining the sound emission, then this loss can be compensated in a simple manner by the device for replenishment in order to ensure a uniform and reproducible blasting result.
- Figure 1 is a schematic s ⁇ hnittansicht by the invention
- a blasting chamber for surface blasting which includes a wall opening within its chamber wall through which a component portion of a turbine blade passes and is positioned within the blasting chamber, wherein a plurality of wall portions of the chamber wall of the blasting chamber are adjustably configured to alter the geometry of the blasting chamber;
- FIG. 2 shows a schematic side view of the blasting chamber according to FIG. 1 in the area of the passage of the turbine blade through the wall opening inside the chamber wall, wherein the turbine blade is shown schematically in a sectional view along the line II-II in FIG.
- FIG. 1 shows a schematic sectional view of a blasting chamber for surface blasting, which is embodied here in particular for ultrasonic blasting of gas turbine components in the form of engine blades 10.
- the blasting chamber has, for example, a substantially cube-shaped geometry, which is essentially delimited by a chamber wall 12.
- the blasting chamber is partially bounded by a surface 14 of an ultrasonic sonotrode 16, which is connected via an ultrasound horn (not shown).
- sound vibration unit - which includes, for example, an ultrasonic piezoelectric actuator - is to be set in vibration.
- the ultrasonic sonotrode 16 is operated by way of example with a frequency of large 20 kHz and an amplitude in the range of about 30 to 60 ⁇ m. Of course, the operation of the ultrasonic sonotrode 16 is not limited to the specified frequency or amplitude range.
- a wall opening 18 is provided through which the engine blade 10 is hm preparegeschreibt with a comprehensive surface to be machined component area 20 or disposed within the blasting chamber.
- the component region 20 arranged within the blasting chamber is in this case the blade of the turbine blade 10, while the blade root 22 is arranged outside the blasting chamber.
- the m horizontal direction can be adjusted linearly.
- the movement or adjustment of the wall region 26 takes place by means of a compressed air source 28 and a supply line 30, via which a pillow-shaped element 32 carrying the wall region 26 can be inflated.
- the wall region 26 may, for example, be formed by a plate-shaped element which is supported on the pillow-shaped element 32.
- the pillow-shaped element 32 is formed by the wall region 26 itself or that the pillow-shaped element 32 comprises the wall region 26.
- the wall region 26 or the kis- Senformige element 32 consist of a flexible resilient material, in particular of a rubber material, which of course must withstand the mechanical and thermal stresses within the blasting chamber.
- a cushion-shaped element 38 positioned behind the wall region 36 is connected to the compressed-air source 28 via a supply line 40. It is likewise conceivable that the pillow-shaped element 38 itself forms the wall region 36.
- the angle of the wall region 36 it is in particular possible to deflect the blasting agent, for example, spheres 42 during ultrasonic shot peening at a corresponding angle and to direct it to the component region 20 of the turbine blade 10 to be machined.
- the chamber wall 12 can accordingly be formed as a pillow-shaped element itself, wherein the chamber wall 12 may comprise one or more, possibly separate to be filled pillow chambers.
- the chamber wall 12 is to be varied via a supply line 46 in total to its size. If, on the other hand, the chamber wall 12 is subdivided into a plurality of cushion cassettes, the chamber wall 12 can be varied not only in size but also in its geometry by filling the individual cushion chambers to different degrees with compressed air from the compressed air reservoir 28.
- the chamber wall 12 may be provided on its inner side which limits the blasting chamber with linings or coatings in order to be able to withstand the thermal and mechanical stresses produced by the balls 42 during ultrasonic shot peening.
- FIG. 2 shows a schematic side view of the comb chamber bounding the blasting chamber 12
- the passage of the component area 20 of the turbine blade 10 which is indicated along the line II-II in FIG.
- the adjacent to the wall opening 18 circumferential Wall portion 48 ( Figure 2) is also adjustable.
- the wall portion 48 is formed as a kissenf ⁇ rmiges element, by adjusting the size or geometry of the wall opening 18 can be varied.
- the wall portion 48 is again made of a flexible yielding material, in particular a rubber material.
- the wall region 48 forms a schematically indicated seal 50 with respect to the impulse vane 10 guided through the wall opening 18, with which the outlet of balls 42 located within the blasting chamber can be avoided.
- the adjustable wall region 48 in the contact region of the seal 50 comprises a likewise schematically indicated circulating sliding element 52 with which, for example, a displacement or rotation of the turbine blade 10 within the wall opening 18 is possible.
- the wall opening 18 is preferably initially adjusted so that it is designed to be larger than the clear cross section of the turbomachine blade 10. After this is positioned inside the blasting chamber, the wall region 28 is correspondingly inflated so far that it is up to it the turbine blade 10 and the chamber wall 12 enters the desired seal against the escape of balls 42. Inflation of the pillow-shaped wall region 48 takes place via a supply line 56 fed by a compressed air source 54.
- the chamber wall 12 - as shown by the lines 44 - designed in total from a flexible yielding material, so the Wando réelle 18 surrounding wall portion 48 of course also be formed by the chamber wall 12 itself. In other words, it is therefore also conceivable to create a chamber wall 12 to be filled in total with a gas, which then adapts to the turbine blade 10.
- adjustable wall portions 26, 36 and 48 can be provided separately as well as together within the blasting chamber. It is also conceivable to combine a combination of a chamber wall 12 to be filled with air, in accordance with the lines 44, with a wall region 26, 36 and 48 to be filled separately.
- a device 48 for determining the sound emission within the blasting chamber is arranged in the present exemplary embodiment. Accordingly, if a loss of balls 42 is detected, then the means 58 is connected via a conduit 60 to a means 62 for replenishing within the blasting chamber Balls 42 connected. Due to the possibly required refilling of balls 42 by means of the device 62, it is ensured that always a constant amount of balls 42 or the like jet means is located within the blasting chamber, so that an 'extremely consistent and easily reproducible surface result even with a plurality of turbine blades 10 can be achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006008210A DE102006008210A1 (de) | 2006-02-22 | 2006-02-22 | Strahlkammer zum Oberflächenstrahlen, insbesondere zum Ultraschall-Kugelstrahlen von Gasturbinen-Bauteilen |
| PCT/DE2007/000283 WO2007095903A1 (de) | 2006-02-22 | 2007-02-15 | Strahlkammer zum oberflächenstrahlen, insbesondere zum ultraschall kugelstrahlen von gasturbinen-bauteilen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1986817A1 true EP1986817A1 (de) | 2008-11-05 |
| EP1986817B1 EP1986817B1 (de) | 2011-06-29 |
Family
ID=37907444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07702443A Not-in-force EP1986817B1 (de) | 2006-02-22 | 2007-02-15 | Strahlkammer zum oberflächenstrahlen, insbesondere zum ultraschall kugelstrahlen von gasturbinen-bauteilen |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7673486B2 (de) |
| EP (1) | EP1986817B1 (de) |
| DE (1) | DE102006008210A1 (de) |
| WO (1) | WO2007095903A1 (de) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004037954A1 (de) * | 2004-08-05 | 2006-03-16 | Mtu Aero Engines Gmbh | Vorrichtung zum Oberflächenstrahlen von Bauteilen |
| US7665338B2 (en) * | 2006-10-20 | 2010-02-23 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Shot peening methods and units |
| DE102008011243A1 (de) * | 2008-02-14 | 2009-08-20 | Mtu Aero Engines Gmbh | Vorrichtung und Verfahren zum Oberflächenstrahlen eines Bauteils |
| JP5148329B2 (ja) * | 2008-03-06 | 2013-02-20 | 三菱重工業株式会社 | ショットピーニング装置及びショットピーニング用振動子 |
| JP5448784B2 (ja) * | 2009-12-18 | 2014-03-19 | 三菱重工業株式会社 | ショットピーニング装置 |
| DE102010006094B4 (de) * | 2010-01-28 | 2013-06-27 | Siemens Aktiengesellschaft | Verfahren zur Oberflächenverfestigung einer Komponente einer Windturbine |
| US20110252850A1 (en) * | 2010-04-14 | 2011-10-20 | Jian Lu | Method and device of enhancing diffusibility of metallic surfaces and applications thereof |
| GB2492831A (en) * | 2011-07-14 | 2013-01-16 | Hkpb Scient Ltd | Workpiece surface modification during ultrasonic peening |
| US9670561B2 (en) * | 2014-04-11 | 2017-06-06 | City University Of Hong Kong | Apparatus and a method for surface processing a metallic structure |
| US10493594B2 (en) | 2016-04-12 | 2019-12-03 | General Electric Company | Apparatus and method for peening of machine components |
| FR3061055B1 (fr) * | 2016-12-26 | 2019-07-26 | Safran Aircraft Engines | Dispositif pour le traitement d'une piece metallique, procede et ensemble de projectiles associes |
| CN109517955A (zh) * | 2018-11-16 | 2019-03-26 | 上海蜂云航空科技有限公司 | 一种用于提高发动机喷嘴射流孔件热稳定性的方法及设备 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4355488A (en) * | 1980-01-14 | 1982-10-26 | Air Products And Chemicals, Inc. | Cryogenic deflashing method |
| FR2689431B1 (fr) * | 1992-04-06 | 1995-10-20 | Teknoson | Procede et dispositif notamment de durcissement par ultrasons de pieces metalliques. |
| FR2715884B1 (fr) * | 1994-02-04 | 1996-04-12 | Gec Alsthom Electromec | Procédé et dispositif pour le traitement de surface et la mise en précontrainte de la paroi intérieure d'une cavité. |
| US5950470A (en) * | 1998-09-09 | 1999-09-14 | United Technologies Corporation | Method and apparatus for peening the internal surface of a non-ferromagnetic hollow part |
| US6170308B1 (en) | 1999-07-20 | 2001-01-09 | United Technologies Corporation | Method for peening the internal surface of a hollow part |
| FR2812285B1 (fr) * | 2000-07-28 | 2003-02-07 | Univ Troyes Technologie | Procede de traitement de nanostructures et dispositif de traitement de nanostructures |
| FR2814099B1 (fr) * | 2000-09-21 | 2002-12-20 | Snecma Moteurs | Grenaillage transversal par ultrassons des aubes sur un rotor |
| US7028378B2 (en) * | 2000-10-12 | 2006-04-18 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Method of shot blasting and a machine for implementing such a method |
| FR2816636B1 (fr) * | 2000-11-16 | 2003-07-18 | Snecma Moteurs | Grenaillage des sommets des aubes refroidies |
| DE102004029546A1 (de) | 2004-06-19 | 2006-01-05 | Mtu Aero Engines Gmbh | Verfahren und Vorrichtung zum Oberflächenstrahlen von Gasturbinenschaufeln im Bereich ihrer Schaufelfüße |
| US20060021410A1 (en) * | 2004-07-30 | 2006-02-02 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Shot, devices, and installations for ultrasonic peening, and parts treated thereby |
| FR2907360B1 (fr) * | 2006-10-20 | 2009-05-22 | Sonats Soc Des Nouvelles Appli | Procedes et installations de grenailles. |
-
2006
- 2006-02-22 DE DE102006008210A patent/DE102006008210A1/de not_active Withdrawn
-
2007
- 2007-02-15 WO PCT/DE2007/000283 patent/WO2007095903A1/de not_active Ceased
- 2007-02-15 US US12/280,329 patent/US7673486B2/en not_active Expired - Fee Related
- 2007-02-15 EP EP07702443A patent/EP1986817B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007095903A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006008210A1 (de) | 2007-08-23 |
| US20090011686A1 (en) | 2009-01-08 |
| EP1986817B1 (de) | 2011-06-29 |
| WO2007095903A1 (de) | 2007-08-30 |
| US7673486B2 (en) | 2010-03-09 |
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