EP2117777B1 - Device and method for the surface peening of a component of a gas turbine - Google Patents
Device and method for the surface peening of a component of a gas turbine Download PDFInfo
- Publication number
- EP2117777B1 EP2117777B1 EP07856056A EP07856056A EP2117777B1 EP 2117777 B1 EP2117777 B1 EP 2117777B1 EP 07856056 A EP07856056 A EP 07856056A EP 07856056 A EP07856056 A EP 07856056A EP 2117777 B1 EP2117777 B1 EP 2117777B1
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- EP
- European Patent Office
- Prior art keywords
- component
- shot
- peening
- vibration
- vibration device
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- 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.)
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Classifications
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- 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
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- 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
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- 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
- the invention relates to a device and a method for surface blasting, in particular for ultrasonic shot peening of a component of a gastrubine of the type specified in the preambles of claims 1 and 8 respectively.
- An apparatus for surface blasting or such a method are already known from EP 1 101 568 B1 to take as designated, wherein the rotor blades of a rotor designed as a blisk can be shot peened to improve their fatigue strength.
- the device in this case comprises a holding device, on which the rotor is rotatably held about its axis of rotation. By rotating the rotor whose rotor blades are guided through a blasting chamber, on the underside of a vibration device in the form of an ultrasonic sonotrode is arranged with an at least approximately horizontally extending oscillating surface.
- the blasting chamber is thereby bounded both axially - ie in the region of the broad sides of the rotor - as well as radially - ie in the region of the rotor blades - the blisk by corresponding chamber walls. Since, in particular, the chamber walls of the blasting chamber, which are arranged radially to the rotor, are unable to hold all the balls within the central blasting chamber, depending on the position of the respective rotor blades, they are each preceded or arranged in the radial direction of the rotor by two further chambers. Within these further chambers, balls passing over from the central beam chamber equipped with the sonotrode are collected and returned via corresponding channels.
- a disadvantage of this known device or the associated method is the fact that a uniform solidification of the radiating surface areas of the rotor blades is difficult to achieve. This also because of The fact that the rotor blades with respect to their central axis or the perpendicular to the axis of rotation of the rotor, a rotation, the so-called "twist".
- Object of the present invention is to provide a device and a method of the type mentioned, with which the solidification of different surface areas of the component can be made more targeted or uniform.
- the angular position of the surface of the at least one vibration device is adjustable relative to the surface region of the component of the gas turbine.
- it is provided for this purpose to adjust the angular position of the surface of the vibration device relative to the surface region of the component - before and / or during surface radiation.
- the rotation of each rotor blade generally referred to as "twist" about its central axis or perpendicular to the axis of rotation of the rotor, causes the vector of the surface normal to change significantly over the blade geometry, it is now possible for an adjustable surface of the vibration device Adjust normal vector accordingly.
- the surface of the vibration devices can now be set so that their normal vector points directly or at the desired angle to the surface area of the component to be machined. Since the angle at which the blasting material accelerated by the surface of the vibration device has a decisive effect on the hardening of the surface area of the component to be machined, it can thus be set or adjusted uniformly by a corresponding adjustment of the angular position of the surface of the vibration device.
- the holding device Since the component of the gas turbine itself is received by the holding device, a very good reproducible surface quality or solidification of the surface regions of the component to be machined can be achieved. In other words, the beam intensity of the surface radiation over the entire beam range can be ensured extremely homogeneously within narrow limits.
- the angular position of the surface of the at least one vibration device is adjustable relative to the surface area during the surface blasting of the surface region of the component.
- the various surface areas of the component can be individually processed with a matched to it surface radiation.
- the beam intensity and the angle of incidence of the Match blasting material to the respective surface area of the component to be machined.
- the rotor blades can be blasted in a continuous or stepped process in that the rotor is rotated at the appropriate speed.
- the angular position of the surface of the vibration device changes accordingly.
- a further advantageous embodiment of the invention provides that two vibration devices are provided, which have respective surfaces at an angle to one another. This makes it possible in a simple manner, a component machined synchronously on both sides, so that even complex three-dimensional component geometries can be blasted in an optimal manner.
- the synchronous two-sided surface radiation has the great advantage that in particular thin component areas experience no delay.
- the respective surfaces of the two vibration devices are arranged substantially V-shaped to each other.
- the two surfaces are particularly easily adaptable to each other in their angular position, so that in particular in the two-sided blasting respectively the immediately opposite surface areas can be blasted synchronously.
- a mirror-symmetrical arrangement provides that the respective surfaces of the two vibration devices intersect at least approximately in a central axis or a vertical of the component.
- the at least one adjustable surface of the respective vibration device is adjustable by one or two adjustment axes.
- the two axes are preferably perpendicular to each other, so that in a simple way a tilt and rotation angle can be adjusted.
- a surface of the vibration device provided with two adjustment axes is characterized in particular by the fact that it can be adjusted two-dimensionally. Accordingly, of course, the normal vector of the surface is two-dimensionally adjustable.
- the device according to the invention is designed for processing a rotor, which is rotatably supported about a rotation axis, in particular a blisk.
- the rotor blades can thus be brought in a simple manner by rotating the rotor in the beam region of the surface of the vibrating device, being ensured by the adjustable surface that all surface areas to be processed are subjected to the desired beam intensity.
- a simple adaptation of the blasting chamber to the respective component to be machined can be achieved in that the chamber walls are at least partially flexible.
- the chamber walls are at least partially flexible.
- the chamber walls of the blasting chamber are adjustable even in their angular position.
- the reflection of the blasting material on the chamber walls can be influenced and, on the other hand, the chamber walls can easily be brought close to the respective component in order to achieve a reliable seal before the blasting material exits. It is clear that this results in a simple way to use components with different geometry or size.
- a distribution device is provided with which the beam material can be distributed over the surface of the vibration device. Due to the inclined arrangement of the surface is thus avoided in a simple manner that blasting collects excessively at a low point of the surface. Rather, a uniform distribution of the grit can be created by the distribution device, so that over the entire surface results in a uniform beam intensity and uniform solidification of the surface region of the component.
- a particularly simple distribution device can be realized if it comprises a vibrating surface, which is realized for example by a sonotrode, by a so-called flapper, a piezo hacker or a vibrating plate or membrane.
- the distribution device can also be operated with a compressed medium, in particular with compressed air, which can be adjusted in a simple manner so that a uniform distribution of the blasting material also results at the upper points of the surface of the vibration device.
- a first means for determining the amount of blasting material is provided within the blasting chamber.
- This device can for example perform a sound analysis within the blasting chamber, with which the amount of blasting material is to be determined. In doing so, one makes use of the basic idea that the sound of the blasting material changes depending on its quantity.
- a device for replenishing the blasting material can be provided so that its quantity remains constant within the blasting chamber.
- a constant amount of blasting material ensures, in particular, that an easily reproducible and constant blasting result can be achieved.
- the device for subsequent metering of the blasting material can be controlled as a function of the quantity of blasting material determined by the first device.
- a monitoring can be realized in a simple way, so that always the same amount of blasting material, for example, is present within the blasting chamber.
- Fig. 1 is a schematic and partial perspective view of a rotatable rotor on a gas turbine in the form of a blisk 10 schematically visible.
- Fig. 2 which shows the blisk 10 in a schematic sectional view, the basic individual areas of which are more clearly recognizable.
- a blisk disk 12 can be seen, on whose outer peripheral side a multiplicity of rotor blades 14 are arranged.
- the blisk disk 12 is essentially an in Fig.
- a sub-platform 18 connects:
- the lower platform portion 18 is radially inward in a disk neck 20 on which the Sub-platform 18 connects with a disk body 22.
- the radially inner end of the disk body 22 is formed by a hub 24, which is a counterweight to the rotor blades 14.
- a - viewed in the radial direction - middle portion of the disk body 22 is another wing 28 on the other side of the blisk disk 12 from which comprises an angular portion 30 and a connecting them with the disk body 22 web 32 which at an angle protrudes from 45 ° relative to the disk body 22.
- the blisk 10 is designed to be rotatable or rotationally symmetrical about a rotation axis R overall.
- a holding device 34 by two symbolically indicated bearing blocks 36, via which the blisk 10 is rotatably supported or mounted about its axis of rotation R.
- the apparatus for shot peening in the present case comprises a blasting chamber 38, which in particular in conjunction with Fig. 2 is more clearly recognizable.
- the blasting chamber 38 serves for shot peening of the surface regions 40, 42 on the opposite sides of each of the rotor blades 14.
- the blasting chamber 38 is in Fig. 1 indicated only by dashed lines and shown along a vertical S on the axis of rotation R of the blisk 10 and cut parallel to the cut surface by the blisk 10.
- the blasting chamber 38 comprises two vibration devices 44, 46, which are indicated only schematically, which in the present case are designed as ultrasonic sonotrodes.
- Each of the vibration devices 44, 46 comprises a surface 48, 50 facing the component to be radiated or the respective rotary blade 14, which are flat in the present exemplary embodiment.
- the surfaces 48, 50 of the two vibration devices 44, 46 are arranged substantially V-shaped at an angle of presently approximately 110 ° to 120 ° to each other.
- the two vibrators 46, 48 are within associated Chamber walls 52, 54 of the blasting chamber 38 recorded.
- Fig. 2 can be seen that the two surfaces 48, 50 in the region of a common adjustment axis V in their angular position relative to each other or relative to the component to be radiated (rotor blades 14) are adjustable.
- the adjustment axis V in this case runs perpendicular to the page plane.
- each of the two surfaces 50 can be adjusted by a further adjustment axis Z, which in Fig. 2 are indicated only schematically.
- the respective second adjusting axes Z each extend in the plane of the surfaces 48, 50 and perpendicular to the first adjustment axis V.
- each of the two surfaces 48, 50 present at least about the adjustment axis V and possibly - if any - to the further adjustment axis Z be adjusted.
- the angle of incidence of the blasting material can be adjusted to the particular region of the surface regions 40, 42 to be blasted, resulting in optimum or individual hardening.
- the angular position of the surfaces 48, 50 can during the surface blasting of the respective rotor blade 14 are adjusted so that each rotor blade 18 can be surface-blasted in one operation. If the blisk 10 is rotated stepwise or continuously about its axis of rotation R within the holding device 34, an adjustment can likewise be made by the surfaces 48, 50.
- the surfaces 48, 50 merely presettable, in which case the entire working process is carried out with the correspondingly adjusted surfaces 48, 50.
- the component to be machined has a relatively simple geometry.
- the chamber walls 52, 54, 56, 58 must be correspondingly formed so that the surfaces 48, 50 of the two vibration devices 44, 46 can be adjusted.
- flexible chamber walls 52, 54, 56, 58 which can even easily surround the entire component.
- a flexible enclosure would be created, which encloses the entire component and conforms to the side surfaces of the vibration devices 48, 50 and optionally not shown here component holders.
- the surfaces 48, 50 opposite chamber walls 56, 58 may also be designed to be adjustable in order to allow a corresponding adjustment to the inclination adjustment of the vibration device 44, 46.
- the reflection angle can be influenced, in which the blasting material rebounds from these.
- the V-shaped arrangement of the two surfaces 48, 50 can be achieved in particular that the opposing surface regions 40, 42 of the respective rotor blade 14 can be blasted synchronously. As a result, it is achieved in particular with thin-walled components that there is no delay.
- the angular positions of the surfaces 48, 50 moreover, a homogeneous beam intensity can be achieved over the entire beam range within narrow limits.
- the surfaces 48, 50 are arranged at an identical angle to the vertical S, which has a central axis through the respective rotor blade 14 represents. Likewise, it would of course also be conceivable to adjust the two surfaces 48, 50 at different angles over the adjustment axes V and Z.
- the two surfaces 48, 50 can theoretically be set at an angle of 0 ° to 90 ° - and in particular from 0 ° to 80 ° - to the vertical S or to the central axis of the respective rotor blade 14. Also well suited is an angle of between about 30 ° and about 60 °, and in particular between 40 ° and 50 ° of the two surfaces 48, 50 to the vertical S.
- a distributor 62 is provided, with which the blasting material - in the present case the balls - evenly distributed over the two surfaces 48, 50.
- the beam intensity is also homogenized.
- the distribution device 62 comprises a hose 64, with which compressed air or compressed air can be passed to the lowest point within the blasting chamber 38, so that the collecting blasting material moves upward and is evenly distributed over the surfaces 48, 50.
- a vibrating surface 66 may also be provided, which in Fig. 2 also indicated schematically.
- the oscillating surface 66 can be operated, for example, by a sonotrode, a flapper, a piezoshacker or a vibrating plate or membrane. As a result, it is also achieved here that the blasting material is distributed uniformly over the surfaces 48, 50.
- a first device 68 is provided within the blasting chamber 38, with which the amount of blasting material can be determined. This can be done for example by means of a sound analysis in which the sound is measured within the blasting chamber 38 on the basis of the amount of blasting material. When falling below a threshold value then further blasting material can be replenished by means of a second device 70, as indicated by the dashed tube 72. As a result, this ensures that there is always a constant amount of blasting material within the blasting chamber 38, so that a reproducible blasting result can be achieved.
- the surface regions 40, 42 of the component 14 and the surfaces 48, 50 of the two vibration devices 44, 46 can thus be arranged relative to one another by means of the holding device 32 and be moved relative to one another by rotating the blisk 10 about their axis of rotation R during surface blasting.
- the angular position of the surface 48, 50 of the at least one vibration device 44, 46 relative to the surface region 40, 42 of the component 14 can be adjusted only in advance and / or during the surface blasting of the surface region 40, 42 of the component 14 to the surface regions 40, 42 to consolidate more targeted and uniform.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zum Oberflächenstrahlen, insbesondere zum Ultraschall-Kugelstrahlen eines Bauteils einer Gastrubine der in den Oberbegriffen der Patentansprüche 1 bzw. 8 angegebenen Art.The invention relates to a device and a method for surface blasting, in particular for ultrasonic shot peening of a component of a gastrubine of the type specified in the preambles of claims 1 and 8 respectively.
Eine Vorrichtung zum Oberflächenstrahlen bzw. ein solches Verfahren sind bereits aus der
Als nachteilig bei dieser bekannten Vorrichtung bzw. dem zugehörigen Verfahren ist jedoch der Umstand anzusehen, dass eine gleichmäßige Verfestigung der zu strahlenden Oberflächenbereiche der Rotorschaufeln nur schwer zu erreichen ist. Dies auch aufgrund der Tatsache, dass die Rotorschaufeln bezogen auf ihre Mittelachse bzw. die senkrechte zur Rotationsachse des Rotors eine Verdrehung, den so genannten "Twist" aufweisen.A disadvantage of this known device or the associated method, however, is the fact that a uniform solidification of the radiating surface areas of the rotor blades is difficult to achieve. This also because of The fact that the rotor blades with respect to their central axis or the perpendicular to the axis of rotation of the rotor, a rotation, the so-called "twist".
Dokument
Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung sowie ein Verfahren der eingangs genannten Art zu schaffen, mit welchen die Verfestigung verschiedener Oberflächenbereiche des Bauteils gezielter bzw. gleichmäßiger erfolgen kann.Object of the present invention is to provide a device and a method of the type mentioned, with which the solidification of different surface areas of the component can be made more targeted or uniform.
Diese Aufgabe wird erfindungsgemäß durch eine Vorrichtung und ein Verfahren mit den Merkmalen der Patentansprüche 1 bzw. 8 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen und nicht-trivialen Weiterbildungen der Erfindung sind in den jeweils abhängigen Patentansprüchen angegeben.This object is achieved by a device and a method having the features of claims 1 and 8, respectively. Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the respective dependent claims.
Damit verschiedene Oberflächenbereiche des jeweiligen Bauteils der Gasturbine gezielter und gleichmäßiger durch das Oberflächenstrahlen verfestigt werden können, ist es erfindungsgemäß vorgesehen, dass die Winkelposition der Oberfläche der wenigstens einen Vibrationseinrichtung relativ zu dem Oberflächenbereich des Bauteils der Gasturbine einstellbar ist. Bei dem Verfahren ist es hierzu erfindungsgemäß vorgesehen, die Winkelposition der Oberfläche der Vibrationseinrichtung relativ zu dem Oberflächenbereich des Bauteils - vor und/oder während des Oberflächenstrahlens - einzustellen.In order that different surface regions of the respective component of the gas turbine can be solidified in a more targeted and uniform manner by the surface blasting, it is provided according to the invention that the angular position of the surface of the at least one vibration device is adjustable relative to the surface region of the component of the gas turbine. In the method according to the invention, it is provided for this purpose to adjust the angular position of the surface of the vibration device relative to the surface region of the component - before and / or during surface radiation.
Mit anderen Worten ist es also erfindungsgemäß vorgesehen, eine Vorrichtung sowie ein Verfahren zum Oberflächenstrahlen zu schaffen, bei welcher die Oberfläche der zumindest einen Vibrationseinrichtung und der Oberflächenbereich des Bauteils so in ihrer Winkelposition relativ zueinander verstellt werden können, dass sich eine für den jeweils spezifisch zu bearbeitenden Oberflächenbereich optimale Bestrahlung mit Strahlgut realisieren lässt. Da zum Beispiel die allgemein als "Twist" bezeichnete Verdrehung jeder Rotorschaufel um ihre Mittelachse bzw. ihre senkrechte zur Rotationsachse des Rotors bedingt, dass sich der Vektor der Oberflächennormalen über die Schaufelgeometrie deutlich ändert, ist es bei einer verstellbaren Oberfläche der Vibrationseinrichtung nunmehr möglich, deren Normalenvektor entsprechend zu verstellen. Mit anderen Worten kann beispielsweise die Oberfläche der Vibrationseinrichtungen nunmehr so eingestellt werden, dass deren Normalenvektor unmittelbar bzw. im erwünschten Winkel auf den zu bearbeitenden Oberflächenbereich des Bauteils weist. Da der Winkel, in welchem das von der Oberfläche der Vibrationseinrichtung beschleunigte Strahlgut auf den jeweils zu bearbeitenden Oberflächenbereich des Bauteils in entscheidendem Maß die Verfestigung beeinflusst, kann diese somit durch eine entsprechende Einstellung der Winkelposition der Oberfläche der Vibrationseinrichtung gezielt bzw. gleichmäßig eingestellt werden.In other words, it is therefore provided according to the invention to provide a device and a method for surface blasting in which the surface of the at least one vibrating device and the surface region of the component can be adjusted in their angular position relative to each other, that for each specific to processing surface area can realize optimal irradiation with blasting. Since, for example, the rotation of each rotor blade, generally referred to as "twist" about its central axis or perpendicular to the axis of rotation of the rotor, causes the vector of the surface normal to change significantly over the blade geometry, it is now possible for an adjustable surface of the vibration device Adjust normal vector accordingly. In other words, for example, the surface of the vibration devices can now be set so that their normal vector points directly or at the desired angle to the surface area of the component to be machined. Since the angle at which the blasting material accelerated by the surface of the vibration device has a decisive effect on the hardening of the surface area of the component to be machined, it can thus be set or adjusted uniformly by a corresponding adjustment of the angular position of the surface of the vibration device.
Im Ergebnis ist somit erkennbar, dass eine gezielte und gleichmäßige Verfestigung der zu bearbeitenden Oberfläche des Bauteils erreicht werden kann, indem die relative Lage der Oberfläche der Sonotrode und des zu bearbeitenden Oberflächenbereichs entsprechend variiert wird. Dabei ist es sowohl denkbar, die Oberfläche der Vibrationseinrichtung relativ zu dem zu bearbeitenden Oberflächenbereich einstellbar zu gestalten wie auch umgekehrt, den Oberflächenbereich des Bauteils - beispielsweise mittels der Halteeinrichtung - gegenüber der Oberfläche der Vibrationseinrichtung.As a result, it can be seen that a targeted and uniform hardening of the surface to be machined of the component can be achieved by the relative position of the surface of the sonotrode and the surface area to be processed is varied accordingly. It is also conceivable to make the surface of the vibration device adjustable relative to the surface area to be processed, as well as vice versa, the surface area of the component - for example by means of the holding device - relative to the surface of the vibration device.
Da das Bauteil der Gasturbine selbst durch die Halteeinrichtung aufgenommen ist, lässt sich hierbei eine sehr gut reproduzierbare Oberflächenqualität bzw. Verfestigung der zu bearbeitenden Oberflächenbereiche des Bauteils erreichen. Mit anderen Worten kann die Strahlintensität der Oberflächenstrahlung über den ganzen Strahlbereich äußerst homogen innerhalb geringer Grenzen gewährleistet werden.Since the component of the gas turbine itself is received by the holding device, a very good reproducible surface quality or solidification of the surface regions of the component to be machined can be achieved. In other words, the beam intensity of the surface radiation over the entire beam range can be ensured extremely homogeneously within narrow limits.
Die nachfolgenden Vorteile der erfindungsgemäßen Vorrichtung sind auch als Vorteile des erfindungsgemäßen Verfahrens zu betrachten.The following advantages of the device according to the invention are also to be regarded as advantages of the method according to the invention.
In weiterer Ausgestaltung der Erfindung hat es sich zudem als vorteilhaft gezeigt, wenn die Winkelposition der Oberfläche der zumindest einen Vibrationseinrichtung relativ zu dem Oberflächenbereich während des Oberflächenstrahlens des Oberflächenbereichs des Bauteils verstellbar ist. Hierdurch können die verschiedenen Oberflächenbereiche des Bauteils individuell mit einer auf sie abgestimmten Oberflächenstrahlung bearbeitet werden. Durch die jeweilig eingestellte Winkelposition der Oberfläche der Vibrationseinrichtung relativ zu dem Oberflächenbereich lässt sich dabei die Strahlintensität und der Auftreffwinkel des Strahlguts auf den jeweils zu bearbeitenden Oberflächenbereich des Bauteils abstimmen. Dabei können beispielsweise die Rotorschaufeln in einem kontinuierlichen oder gestuften Prozess dadurch gestrahlt werden, dass der Rotor mit entsprechender Geschwindigkeit gedreht wird. Hieran angepasst ändert sich demzufolge auch die Winkelposition der Oberfläche der Vibrationseinrichtung.In a further embodiment of the invention, it has also been shown to be advantageous if the angular position of the surface of the at least one vibration device is adjustable relative to the surface area during the surface blasting of the surface region of the component. As a result, the various surface areas of the component can be individually processed with a matched to it surface radiation. By the respectively set angular position of the surface of the vibration device relative to the surface area, the beam intensity and the angle of incidence of the Match blasting material to the respective surface area of the component to be machined. In this case, for example, the rotor blades can be blasted in a continuous or stepped process in that the rotor is rotated at the appropriate speed. Correspondingly, the angular position of the surface of the vibration device changes accordingly.
Eine weiter vorteilhafte Ausgestaltung der Erfindung sieht vor, dass zwei Vibrationseinrichtungen vorgesehen sind, welche in einem Winkel zueinander stehende jeweilige Oberflächen aufweisen. Hierdurch ist es auf einfache Weise möglich, ein Bauteil beidseitig synchron bearbeitbar, so dass auch komplexe dreidimensionale Bauteilgeometrien in optimaler Weise gestrahlt werden können. Die synchrone beidseitige Oberflächenstrahlung hat dabei den großen Vorteil, dass insbesondere dünne Bauteilbereiche keinen Verzug erfahren.A further advantageous embodiment of the invention provides that two vibration devices are provided, which have respective surfaces at an angle to one another. This makes it possible in a simple manner, a component machined synchronously on both sides, so that even complex three-dimensional component geometries can be blasted in an optimal manner. The synchronous two-sided surface radiation has the great advantage that in particular thin component areas experience no delay.
Dabei hat es sich als zudem vorteilhaft gezeigt, wenn die jeweiligen Oberflächen der beiden Vibrationseinrichtungen im Wesentlichen V-förmig zueinander angeordnet sind. Die beiden Oberflächen sind dabei besonders leicht in ihrer Winkelstellung aufeinander anpassbar, so dass insbesondere beim beidseitigen Strahlen jeweils die unmittelbar gegenüberliegenden Oberflächenbereiche synchron gestrahlt werden können. Eine spiegelsymmetrische Anordnung sieht dabei vor, dass die jeweiligen Oberflächen der beiden Vibrationseinrichtung zumindest annähernd in einer Mittelachse bzw. einer Senkrechten des Bauteils sich schneiden.It has also proven to be advantageous if the respective surfaces of the two vibration devices are arranged substantially V-shaped to each other. The two surfaces are particularly easily adaptable to each other in their angular position, so that in particular in the two-sided blasting respectively the immediately opposite surface areas can be blasted synchronously. A mirror-symmetrical arrangement provides that the respective surfaces of the two vibration devices intersect at least approximately in a central axis or a vertical of the component.
In weiter Ausgestaltung der Erfindung ist die wenigstens eine einstellbare Oberfläche der jeweiligen Vibrationseinrichtung um eine bzw. zwei Verstellachsen einstellbar. Die beiden Achsen verlaufen dabei vorzugsweise senkrecht zueinander, so dass auf einfache Art ein Kipp- und Drehwinkel eingestellt werden kann. Mit anderen Worten zeichnet sich demzufolge eine mit zwei Verstellachsen versehene Oberfläche der Vibrationseinrichtung insbesondere dadurch aus, dass diese zweidimensional verstellt werden kann. Demzufolge ist natürlich auch der Normalenvektor der Oberfläche zweidimensional einstellbar.In a further embodiment of the invention, the at least one adjustable surface of the respective vibration device is adjustable by one or two adjustment axes. The two axes are preferably perpendicular to each other, so that in a simple way a tilt and rotation angle can be adjusted. In other words, therefore, a surface of the vibration device provided with two adjustment axes is characterized in particular by the fact that it can be adjusted two-dimensionally. Accordingly, of course, the normal vector of the surface is two-dimensionally adjustable.
Die erfindungsgemäße Vorrichtung ist zur Bearbeitung eines um eine Rotationsachse drehbar gehaltenen Rotors, insbesondere einer Blisk ausgebildet. Insbesondere die Rotorschaufeln können somit auf einfache Weise durch Drehen des Rotors in den Strahlbereich der Oberfläche der Vibrationseinrichtung gebracht werden, wobei durch die einstellbare Oberfläche gewährleistet ist, dass alle zu bearbeitenden Oberflächenbereiche mit der gewünschten Strahlintensität beaufschlagt werden.The device according to the invention is designed for processing a rotor, which is rotatably supported about a rotation axis, in particular a blisk. In particular, the rotor blades can thus be brought in a simple manner by rotating the rotor in the beam region of the surface of the vibrating device, being ensured by the adjustable surface that all surface areas to be processed are subjected to the desired beam intensity.
Um eine besonders einfache Vorrichtung mit einem leicht reproduzierbaren Strahlergebnis schaffen zu können, hat es sich in weiterer Ausgestaltung der Erfindung als vorteilhaft gezeigt, der wenigstens einen Vibrationseinrichtung eine Strahlkammer zuzuordnen, welcher der zu bearbeitende Oberflächenbereich des Bauteils positionierbar ist. Es ist klar, dass die Strahlkammer entsprechend so groß dimensioniert werden muss, dass die Oberfläche der Vibrationseinrichtung in sämtliche erwünschten Winkelpositionen eingestellt werden kann.In order to be able to create a particularly simple device with an easily reproducible jet result, it has been shown to be advantageous in a further embodiment of the invention to associate with the at least one vibration device a blasting chamber to which the surface area of the component to be machined can be positioned. It is clear that the blasting chamber must be dimensioned so large that the surface of the vibrating device can be adjusted in all desired angular positions.
In weiterer Ausgestaltung der Erfindung lässt sich eine einfache Anpassung der Strahlkammer an das jeweils zu bearbeitende Bauteil dadurch erreichen, dass deren Kammerwände zumindest bereichsweise flexibel ausgebildet sind. Durch eine solche flexible Umhüllung ist es beispielsweise möglich, das ganze Bauteil zu umschließen und somit einen Verlust an Strahlgut zu vermeiden. Weiterhin gewährleisten derartige flexible Kammerwände die Möglichkeit, dass sich diese auf einfache Weise an die Sonotrode und an die Bauteilhalterung anschmieden, so dass auch hier kein Verlust an Strahlgut zu befürchten ist.In a further embodiment of the invention, a simple adaptation of the blasting chamber to the respective component to be machined can be achieved in that the chamber walls are at least partially flexible. By such a flexible envelope, it is possible, for example, to enclose the entire component and thus to avoid a loss of blasting. Furthermore, such flexible chamber walls ensure the possibility that they forge easily to the sonotrode and the component holder, so that here too no loss of blasting material is to be feared.
Als weiterhin vorteilhaft hat es sich gezeigt, wenn die Kammerwände der Strahlkammer selbst in ihrer Winkelposition einstellbar sind. Hierdurch kann einerseits die Reflexion des Strahlguts an den Kammerwänden beeinflusst werden und andererseits können die Kammerwände auf einfache Weise bis nahe an das jeweilige Bauteil herangeführt werden, um eine zuverlässige Abdichtung vor dem Austritt von Strahlgut zu erreichen. Es ist klar, dass sich hierdurch eine einfache Möglichkeit zur Verwendung von Bauteilen mit unterschiedlicher Geometrie bzw. Größe ergibt.As further advantageous, it has been shown when the chamber walls of the blasting chamber are adjustable even in their angular position. In this way, on the one hand, the reflection of the blasting material on the chamber walls can be influenced and, on the other hand, the chamber walls can easily be brought close to the respective component in order to achieve a reliable seal before the blasting material exits. It is clear that this results in a simple way to use components with different geometry or size.
In einer weiter vorteilhaften Ausgestaltung der Erfindung ist eine Verteilungseinrichtung vorgesehen, mit welcher das Strahlengut über die Oberfläche der Vibrationseinrichtung verteilbar ist. Aufgrund der geneigten Anordnung der Oberfläche wird somit auf einfache Weise vermieden, dass sich Strahlgut an einer tiefen Stelle der Oberfläche übermäßig sammelt. Vielmehr kann durch die Verteilungseinrichtung eine gleichmäßige Verteilung des Strahlguts geschaffen werden, so dass sich über die gesamte Oberfläche eine gleichmäßige Strahlintensität und eine gleichmäßige Verfestigung des Oberflächenbereichs des Bauteils ergibt.In a further advantageous embodiment of the invention, a distribution device is provided with which the beam material can be distributed over the surface of the vibration device. Due to the inclined arrangement of the surface is thus avoided in a simple manner that blasting collects excessively at a low point of the surface. Rather, a uniform distribution of the grit can be created by the distribution device, so that over the entire surface results in a uniform beam intensity and uniform solidification of the surface region of the component.
Eine besonders einfache Verteilungseinrichtung lässt sich dabei realisieren, wenn diese eine schwingende Oberfläche umfasst, welche beispielsweise durch eine Sonotrode, durch einen so genannten Flapper, einen Piezoshacker oder eine schwingende Platte oder Membran realisiert wird. Alternativ hierzu kann die Verteilungseinrichtung auch mit einem komprimierten Medium, insbesondere mit Druckluft betrieben werden, welches auf einfache Weise so eingestellt werden kann, dass sich eine gleichmäßige Verteilung des Strahlguts auch an den oberen Stellen der Oberfläche der Vibrationseinrichtung ergibt.A particularly simple distribution device can be realized if it comprises a vibrating surface, which is realized for example by a sonotrode, by a so-called flapper, a piezo hacker or a vibrating plate or membrane. Alternatively, the distribution device can also be operated with a compressed medium, in particular with compressed air, which can be adjusted in a simple manner so that a uniform distribution of the blasting material also results at the upper points of the surface of the vibration device.
In weiterer Ausgestaltung der Erfindung ist beispielsweise innerhalb der Strahlkammer eine erste Einrichtung zur Ermittlung der Menge an Strahlgut vorgesehen. Diese Einrichtung kann beispielsweise eine Schallanalyse innerhalb der Strahlkammer durchführen, mit welcher die Menge an Strahlgut zu ermitteln ist. Dabei macht man sich den Grundgedanken zu Nutze, dass sich der Schall des Strahlguts in Abhängigkeit von seiner Menge ändert.In a further embodiment of the invention, for example, a first means for determining the amount of blasting material is provided within the blasting chamber. This device can for example perform a sound analysis within the blasting chamber, with which the amount of blasting material is to be determined. In doing so, one makes use of the basic idea that the sound of the blasting material changes depending on its quantity.
Außerdem kann in weiterer Ausgestaltung der Erfindung eine Einrichtung zum Nachdosieren des Strahlguts vorgesehen sein, so dass dessen Menge innerhalb der Strahlkammer konstant bleibt. Durch eine konstante Menge an Strahlgut wird insbesondere sichergestellt, dass sich ein leicht reproduzierbares und konstantes Strahlergebnis realisieren lässt.In addition, in a further embodiment of the invention, a device for replenishing the blasting material can be provided so that its quantity remains constant within the blasting chamber. A constant amount of blasting material ensures, in particular, that an easily reproducible and constant blasting result can be achieved.
Zudem hat es sich als vorteilhaft gezeigt, wenn die Einrichtung zum Nachdosieren des Strahlguts in Abhängigkeit der durch die erste Einrichtung ermittelten Menge an Strahlgut steuerbar ist. Hierdurch kann auf einfache Weise eine Überwachung realisiert werden, so dass stets dieselbe Menge an Strahlgut beispielsweise innerhalb der Strahlkammer vorhanden ist.In addition, it has proven to be advantageous if the device for subsequent metering of the blasting material can be controlled as a function of the quantity of blasting material determined by the first device. As a result, a monitoring can be realized in a simple way, so that always the same amount of blasting material, for example, is present within the blasting chamber.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnungen; diese zeigen in:
- Fig. 1
- eine schematische Perspektivansicht auf einen ausschnittsweise geschnitten dar- gestellten Rotor einer Gastrubine in Form einer Blisk, welche mittels einer ledig- lich schematisch angedeuteten Haltevorrichtung um ihre Rotationsachse drehbar gehalten ist, wobei an der Unterseite der Blisk im Bereich der Rotorschaufeln ei- ne schematisch angedeutete Strahlkammer erkennbar ist, welche zwei V-förmig zueinander orientierte Oberflächen von jeweils zugehörigen Vibrationseinrich- tungen umfasst, mit welchen Strahlgut beispielsweise in Form von Kugeln in Richtung der Rotorschaufeln zu beschleunigen ist; und in
- Fig. 2
- eine schematische Schnittansicht durch die Blisk gemäß
Fig. 1 , wobei im Be- reich der Rotorschaufeln die Vorrichtung zum Oberflächenstrahlen dargestellt ist, welche vorliegend zwei V-förmig zueinander angeordneten Oberflächen der jeweiligen Vibrationseinrichtungen umfasst, wobei die beiden Oberflächen in ih- rer Winkelposition gegenüber der Blisk einstellbar sind.
- Fig. 1
- a schematic perspective view of a partially cut shown rotor of a gas turbine in the form of a blisk, which is rotatably supported about its axis of rotation by means of a merely schematically indicated holding device, wherein at the bottom of the blisk in the region of the rotor blades ne schematically indicated blasting chamber can be seen, which comprises two V-shaped mutually oriented surfaces of respectively associated Vibrationseinrich- lines with which blasting material is to accelerate, for example in the form of balls in the direction of the rotor blades; and in
- Fig. 2
- a schematic sectional view through the blisk according to
Fig. 1 , In the area of the rotor blades, the device for surface blasting is shown, which in the present case comprises two V-shaped mutually arranged surfaces of the respective vibration devices, wherein the two surfaces are adjustable in their angular position relative to the blisk.
In
Von einer Vorrichtung zum Kugelstrahlen der Rotorschaufeln 14 ist in
Neben der Halteeinrichtung 34 umfasst die Vorrichtung zum Kugelstrahlen vorliegend eine Strahlkammer 38, welche insbesondere in Zusammenschau mit
Aus
Aus
Alternativ wäre es natürlich in einer besonders einfachen Ausführungsform auch denkbar, die Oberflächen 48, 50 lediglich voreinstellbar zu gestalten, wobei dann der ganze Arbeitungsprozess mit den entsprechend eingestellten Oberflächen 48, 50 durchgeführt wird. Dies wäre beispielsweise denkbar, wenn das zu bearbeitende Bauteil eine relativ einfache Geometrie aufweist. Es ist klar, dass die Kammerwände 52, 54, 56, 58 entsprechend so ausgebildet sein müssen, dass die Oberflächen 48, 50 der beiden Vibrationseinrichtungen 44, 46 verstellt werden können. Hier wäre es beispielsweise denkbar, flexible Kammerwände 52, 54, 56, 58 einzusetzen, welche auf einfache Weise sogar das komplette Bauteil umgeben können. In diesem Fall wäre eine flexible Umhüllung geschaffen, die das ganze Bauteil umschließt und sich an den Seitenflächen der Vibrationseinrichtungen 48, 50 und gegebenenfalls hier nicht dargestellte Bauteilhalterungen anschmiegt. In einer nicht gezeigten Ausführungsform können insbesondere die den Oberflächen 48, 50 gegenüber liegenden Kammerwände 56, 58 ebenfalls verstellbar ausgebildet sein, um eine entsprechende Anpassung an die Neigungseinstellung der Vibrationseinrichtung 44, 46 zu ermöglichen. Darüber hinaus kann durch einstellbare Kammerwände 56, 58 der Reflexionswinkel beeinflusst werden, in welchem das Strahlgut von diesen abprallt.Alternatively, of course, in a particularly simple embodiment, it would also be conceivable to make the
Durch die V-förmige Anordnung der beiden Oberflächen 48, 50 kann insbesondere erreicht werden, dass die sich gegenüberliegenden Oberflächenbereiche 40, 42 der jeweiligen Rotorschaufel 14 synchron gestrahlt werden können. Hierdurch wird insbesondere bei dünnwandigeren Bauteilen erreicht, dass es zu keinem Verzug kommt. Durch die Einstellung der Winkelpositionen der Oberflächen 48, 50 kann darüber hinaus eine homogene Strahlintensität über den ganzen Strahlbereich innerhalb geringer Grenzen erreicht werden. Im vorliegenden Ausführungsbeispiel sind die Oberflächen 48, 50 mit einem identischen Winkel gegenüber der Senkrechten S angeordnet, welche eine Mittelachse durch die jeweilige Rotorschaufel 14 darstellt. Gleichfalls wäre es natürlich auch denkbar, die beiden Oberflächen 48, 50 in unterschiedlichen Winkeln über den Verstellachsen V und Z einzustellen.By the V-shaped arrangement of the two
Die beiden Oberflächen 48, 50 können theoretisch in einem Winkel von 0° bis 90° - und hier insbesondere von 0° bis 80° - zur Senkrechten S bzw. zur Mittelachse der jeweiligen Rotorschaufel 14 eingestellt werden. Gut geeignet ist auch ein Winkel von zwischen etwa 30° und etwa 60°, und insbesondere zwischen 40° und 50° der beiden Oberflächen 48, 50 zur Senkrechten S.The two
An einer tiefsten Stelle der beiden Oberflächen 48, 50 ist eine Verteileinrichtung 62 vorgesehen, mit welcher das Strahlgut - vorliegend die Kugeln - gleichmäßig über die beiden Oberflächen 48, 50 verteilbar sind. Hierdurch wird ebenfalls die Strahlintensität homogenisiert. Im vorliegenden Ausführungsspiel umfasst die Verteilungseinrichtung 62 einen Schlauch 64, mit welcher Pressluft bzw. Druckluft an die tiefste Stelle innerhalb der Strahlkammer 38 geleitet werden kann, so dass das sich sammelnde Strahlgut nach oben bewegt und gleichmäßig über die Oberflächen 48, 50 verteilt wird. Alternativ zu dem Schlauch 64 kann auch eine schwingende Oberfläche 66 vorgesehen sein, welche in
Darüber hinaus ist innerhalb der Strahlkammer 38 eine erste Einrichtung 68 vorgesehen, mit welcher die Menge an Strahlgut ermittelt werden kann. Dies kann beispielsweise anhand einer Schallanalyse erfolgen, bei welcher der Schall innerhalb der Strahlkammer 38 anhand der Menge des Strahlguts gemessen wird. Bei Unterschreitung eines Schwellenwerts kann dann weiteres Strahlgut mittels einer zweiten Einrichtung 70 nachdosiert werden, wie mit dem gestrichelten Schlauch 72 angedeutet. Im Ergebnis wird hierdurch erreicht, dass stets eine gleich bleibende Menge von Strahlgut innerhalb der Strahlkammer 38 vorhanden ist, so dass sich ein reproduzierbares Strahlergebnis erreicht lässt.In addition, a
Zum Oberflächenstrahlen können somit die Oberflächenbereiche 40, 42 des Bauteils 14 und die Oberflächen 48, 50 der beiden Vibrationseinrichtungen 44, 46 mittels der Halteeinrichtung 32 relativ zueinander angeordnet und beim Oberflächenstrahlen relativ zueinander durch Drehen der Blisk 10 um ihre Rotationsachse R bewegt werden. Die Winkelposition der Oberfläche 48, 50 der wenigstens einen Vibrationseinrichtung 44, 46 relativ zu dem Oberflächenbereich 40, 42 des Bauteils 14 kann dabei lediglich vorab und/oder während des Oberflächenstrahlens des Oberflächenbereichs 40, 42 des Bauteils 14 verstellt werden, um die Oberflächenbereiche 40, 42 gezielter und gleichmäßiger verfestigen zu können.For surface blasting, the
Claims (13)
- Device for the surface peening, in particular ultrasonic shot peening, of a component (14), in particular of a rotor blade, of a gas turbine, with at least one vibration device (44, 46), which comprises a surface (48, 50) acting on the shot, and with a holding device (34), by means of which a surface area (40, 42) of the component (14) and the surface (48, 50) of the vibration device (44, 46) can be arranged relative to one another, wherein the angular position of the surface (48, 50) of the at least one vibration device (44, 46) can be set relative to the surface area (40, 42) of the component (14) of the gas turbine, characterized by a holding device (34), by means of which a rotor having an axis of rotation (R) and supporting the component integrally, in particular a blisk (10), can be rotatably mounted.
- Device according to one of the preceding claims, characterized in that a distribution device (62) is provided, with which the shot is distributable over the surface (48, 50) of the vibration device (44, 46).
- Device according to claim 2, characterized in that the distribution device (62) is arranged beneath a lowest point of the surface (48, 50) of the at least one vibration device (44, 46).
- Device according to claim 2 or 3, characterized in that the distribution device (62) comprises a surface (48, 50) acting on the shot or is operable using a compressed medium, in particular for compressed air, with which the shot is distributable over the surface (48, 50) of the vibration device (44, 46).
- Device according to one of the preceding claims, characterized in that a first device (68) for determining the quantity of shot is provided.
- Device according to one of the preceding claims, characterized in that a second device (70) for replenishing the shot is provided.
- Device according to claims 5 and 6, characterized in that the second device (70) can be controlled in dependence on the quantity of shot determined by the first device (68).
- Method for the surface peening, in particular ultrasonic shot peening, of a component (14), in particular of a rotor blade, of a gas turbine, in which a surface area (40, 42) of the component (14) and at least one surface (48, 50) of a vibration device (44, 46) acting on the shot are arranged relative to one another and moved relative to one another during surface peening, wherein the angular position of the surface (48, 50) of the at least one vibration device (44, 46) is set relative to the surface area (40, 42) of the component (14), characterized in that for the surface peening of the component (10) an assigned rotor (10), which supports the component integrally, in particular a blisk, is rotated about its axis of rotation (R).
- Method according to claim 8, characterized in that the angular position of the surface (48, 50) of the at least one vibration device (46, 48) is set before the surface peening of the surface area (40, 42) of the component (14).
- Method according to claim 8 or 9, characterized in that the angular position of the surface (48, 50) of the at least one vibration device (46, 48) is adjusted during the surface peening of the surface area (40, 42) of the component (14).
- Method according to one of claims 8 to 10, characterized in that two respective mutually inclined surfaces (48, 50) of vibration devices (44, 46) are set in their angular position relative to the component (14) or adjusted during the surface peening.
- Method according to claim, characterized in that two opposing surface areas (40, 42) of the component (14) are peened synchronously by means of the two surfaces (48, 50).
- Method according to one of claims 8 to 12, characterized in that the component (14) is arranged by means of a holding device (34) relative to the surface (48, 50) of the at least one vibration device (44, 46).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006058679A DE102006058679A1 (en) | 2006-12-13 | 2006-12-13 | Device and method for surface blasting of a component of a gas turbine |
PCT/DE2007/002195 WO2008071161A1 (en) | 2006-12-13 | 2007-12-05 | Device and method for the surface peening of a component of a gas turbine |
Publications (2)
Publication Number | Publication Date |
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EP2117777A1 EP2117777A1 (en) | 2009-11-18 |
EP2117777B1 true EP2117777B1 (en) | 2011-02-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP07856056A Not-in-force EP2117777B1 (en) | 2006-12-13 | 2007-12-05 | Device and method for the surface peening of a component of a gas turbine |
Country Status (6)
Country | Link |
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US (1) | US8931318B2 (en) |
EP (1) | EP2117777B1 (en) |
AT (1) | ATE499183T1 (en) |
CA (1) | CA2672149A1 (en) |
DE (2) | DE102006058679A1 (en) |
WO (1) | WO2008071161A1 (en) |
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GB0902333D0 (en) | 2009-02-13 | 2009-04-01 | Rolls Royce Plc | A surface treatment device |
DE102009015160A1 (en) | 2009-03-26 | 2010-09-30 | Bayerische Motoren Werke Aktiengesellschaft | Process for producing a coated and / or available sheet metal part with a corrosion protection coating |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
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US4432220A (en) * | 1981-09-10 | 1984-02-21 | United Technologies Corporation | Shot peening apparatus |
FR2689431B1 (en) | 1992-04-06 | 1995-10-20 | Teknoson | METHOD AND DEVICE, IN PARTICULAR FOR ULTRASONIC HARDENING OF METAL PARTS. |
FR2801236B1 (en) | 1999-11-18 | 2001-12-21 | Snecma | METHOD AND MACHINE FOR ULTRASONIC BLASTING OF WORKPIECES ON A WHEEL |
FR2812285B1 (en) * | 2000-07-28 | 2003-02-07 | Univ Troyes Technologie | NANOSTRUCTURE PROCESSING METHOD AND NANOSTRUCTURE PROCESSING DEVICE |
FR2814099B1 (en) | 2000-09-21 | 2002-12-20 | Snecma Moteurs | CROSS-SECTIONAL SENSING BY ULTRASSONS OF BLADES ON A ROTOR |
GB2367028B (en) * | 2000-09-22 | 2004-06-09 | Rolls Royce Plc | Gas turbine engine rotor blades |
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 (en) * | 2000-11-16 | 2003-07-18 | Snecma Moteurs | SHOT BLASTING OF COOLED DAWN TOP |
EP1555329A1 (en) * | 2004-01-15 | 2005-07-20 | Siemens Aktiengesellschaft | Workpiece with internal compressive stresses, method and apparatus for producing internal compressive stresses |
DE102004029546A1 (en) * | 2004-06-19 | 2006-01-05 | Mtu Aero Engines Gmbh | Method and apparatus for surface blasting gas turbine blades in the area of their blade roots |
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 |
DE102004037954A1 (en) * | 2004-08-05 | 2006-03-16 | Mtu Aero Engines Gmbh | Device for surface blasting of components |
DE102004059592B4 (en) * | 2004-12-10 | 2014-09-04 | MTU Aero Engines AG | Method for surface blasting of cavities, in particular of cavities on gas turbines |
DE202005007320U1 (en) | 2005-05-09 | 2005-07-07 | Günther Böhler GmbH | Device for abrasive blasting of workpieces |
EP1893386B1 (en) * | 2005-05-12 | 2013-07-17 | General Electric Company | Ultrasonic peening treatment of assembled components |
WO2007055864A2 (en) * | 2005-10-12 | 2007-05-18 | Surface Technology Holdings, Ltd | Improved integrally bladed rotating turbo machinery and method and apparatus for achieving the same |
DE102006058678A1 (en) * | 2006-12-13 | 2008-07-03 | Mtu Aero Engines Gmbh | Method and device for surface blasting of a partial element of a component of a gas turbine |
DE102008010847A1 (en) * | 2008-02-25 | 2009-08-27 | Rolls-Royce Deutschland Ltd & Co Kg | Method and apparatus for shot peening of blisk blades |
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2006
- 2006-12-13 DE DE102006058679A patent/DE102006058679A1/en not_active Withdrawn
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2007
- 2007-12-05 EP EP07856056A patent/EP2117777B1/en not_active Not-in-force
- 2007-12-05 US US12/448,056 patent/US8931318B2/en not_active Expired - Fee Related
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- 2007-12-05 AT AT07856056T patent/ATE499183T1/en active
- 2007-12-05 WO PCT/DE2007/002195 patent/WO2008071161A1/en active Application Filing
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CA2672149A1 (en) | 2008-06-19 |
DE102006058679A1 (en) | 2008-06-19 |
US8931318B2 (en) | 2015-01-13 |
ATE499183T1 (en) | 2011-03-15 |
WO2008071161A1 (en) | 2008-06-19 |
DE502007006567D1 (en) | 2011-04-07 |
US20100037669A1 (en) | 2010-02-18 |
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