EP2125292A1 - Verfahren und vorrichtung zum oberflächenstrahlen eines teilelements eines bauteils einer gasturbine - Google Patents
Verfahren und vorrichtung zum oberflächenstrahlen eines teilelements eines bauteils einer gasturbineInfo
- Publication number
- EP2125292A1 EP2125292A1 EP07856057A EP07856057A EP2125292A1 EP 2125292 A1 EP2125292 A1 EP 2125292A1 EP 07856057 A EP07856057 A EP 07856057A EP 07856057 A EP07856057 A EP 07856057A EP 2125292 A1 EP2125292 A1 EP 2125292A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blasting
- vibration device
- relative
- sealing
- blasting chamber
- 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
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/40—Heat treatment
- F05D2230/41—Hardening; Annealing
-
- 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
- Y10T29/4932—Turbomachine making
- Y10T29/49325—Shaping integrally bladed rotor
Definitions
- the invention relates to a method and a device for surface blasting, in particular for ultrasonic shot peening at least one sub-element of a component, in particular a blisk of a gas turbine of the kind specified in the preambles of claims 1 and 9 respectively.
- Such a method and such a device can already be seen, for example, from EP 1 101 568 B1 as known, wherein the rotor blades of a rotor designed as a blisk are shot-blasted to improve their fatigue strength.
- the rotor is positioned in a holding device, so that it is rotatably supported about its axis of rotation.
- 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.
- the surface of the at least one vibration device and a thin-walled Dichtfin relative to its extension direction at an angle between 70 ° and 90 ° are positioned relative to each other.
- the hitherto in the surface blasting of a rotor, in particular a blisk, not editable without deformation or distortion thin-walled Dichtfin process that the surface of the at least one vibration device is arranged in relation to the Dichtfin in the specified angular range.
- the sealing fin Since the sealing fin is thus subjected to blasting material on both sides in the same way, deformation or even bending away of the usually a few millimeters thick and high partial elements under the influence of the ball hanger is avoided.
- the end face or tip of the respective sealing fin which comes into contact with an inlet or squirting lining during operation of the engine, is solidified in an optimum manner. As a result, the abrasion hardness and the life of the end face or tip of the sealing fin increase considerably.
- Another advantage is that the joining zones of the rotor or the blisk, which are often arranged in the region of the thin-walled sealing fins, can be effectively consolidated so that the tensile residual stresses in the heat-affected zone of the joint can be converted near the surface into compressive stresses.
- an optionally slightly oblique arrangement of the surface of the at least one vibration device with respect to the direction of extension of the sealing fins can be achieved that the web neck - ie the transition region between the Dichtfin and a supporting outer circumferential wall of the rotor - is solidified.
- the surface of the at least one vibration device and the sealing fin are positioned relative to one another with respect to its extension direction at an angle between 85 ° and 90 °, and in particular at least approximately perpendicularly.
- the surface of the at least one vibration device is preferably positioned at least approximately perpendicular relative to the sealing finger to be processed, so that a particularly uniform and synchronous radiation of the two broad sides of the sealing fin results and deformation or bending away of the sealing finger is impossible.
- a particularly uniform and reproducible solidification of the respective sealing fins can be achieved if it is processed in a blasting chamber comprising the associated vibration device.
- a blasting chamber comprising the associated vibration device.
- Through the blasting chamber can be achieved in a simple manner a constant amount of blasting and thus a uniform and uniform jet result.
- boundary walls of the blasting chamber are arranged substantially parallel to this with respect to the direction of extension of the sealing fin, this has the advantage that a particularly synchronous and uniform radiation of the two broad sides can be achieved.
- a plurality of sealing fins are processed in a common blasting chamber. This results in a process optimized with regard to the processing time.
- the partitions can fulfill a dual function as a respective boundary wall, wherein the two adjacent jet chambers can be arranged in close proximity to each other.
- the blasting chamber is provided with chamber walls which are at least partially flexible.
- the device according to the invention can also be used with different components with differing geometry.
- a distribution device is preferably provided within the blasting chamber, with which the blasting material can be distributed over the surface of the at least one vibration device.
- the vibration device is preferably arranged correspondingly at a lowest point of the surfaces of the vibration devices, so that blasting material collecting there is uniformly distributed or also positioned in upper regions of the surfaces.
- a rotatable rotor of a gas turbine in the form of a blisk 10 which is shown in a schematic and axial sectional view, two stages can be discerned here, to which a first and a second disk 12, 14 and a ring of first and second rotor blades 16, 18 are assigned.
- a substantially outer-peripheral-side platform 20, shown in the form of a line can be seen, to which in each case a sub-platform region 22 connects radially inwards.
- Each of the two sub-deck regions 22 merges radially inwardly into a respective disk neck 24 that connects the associated sub-platform region 22 to a disk body 26.
- the radially inner end of the respective disk body 26 is formed by an associated hub 28, which is a counterweight to the respective rotor blades 16, 18.
- the two disks 12, 14 are connected via a peripheral wall 30, which is rotationally symmetrical about an axis of rotation R of the blisk 10 and extends on one side up to a wing 32 and on the other side up to a flange 34.
- the present Blisk 10 comprises five thin-walled Dichtfins 36 formed as sub-elements, which protrude radially circumferentially approximately perpendicular with respect to the rotation axis R of the blisk 10 of the peripheral wall 30 to the outside.
- These thin-walled sealing fins 36 are also generally called “fin sealing lips” or “sealing webs” and have, for example, a radial height of 3 mm and a thickness of 2 mm.
- the sealing fins 36 serve to cooperate with an inlet or scraper lining, not shown, which rotates on the inside circumference of turbine-resistant guide vanes (also not shown) in a ring around the respectively associated sealing finger 36.
- the sealing fins 36 In order to consolidate the sealing fins 36 by surface blasting by means of a blasting material, in particular in the form of spheres, in the present case there are a total of three blasting chambers 38, 40, 42 provided, which are bounded by respective boundary walls or dividing walls 44, 45, 46, 47, 48, 49 or divided from each other.
- the respective sealing fins 36 associated jet chambers 38, 40, 42, two further jet chambers 50 are provided, within which the rotor blades 16, 18 can be solidified by surface blasting.
- the blasting chambers 38, 40, 42 are also assigned end walls 52, which may optionally have corresponding recesses in the area of the sealing fins 36.
- the four central boundary or partition walls 45, 46, 47, 48 are each sealed against the associated platform 20 of the rotor blades 16, 18. In this way, a loss or a transfer of blasting material from one to the other blasting chamber 38, 40, 42 and 50 can be prevented.
- Between the respective boundary or partition wall 45, 46, 47, 48 and the associated platform 20 can be arranged corresponding sealing means.
- the gap or the distance between the respective boundary or partition wall 45, 46, 47, 48 and the associated platform 20 is selected so that the blasting material can not pass between them.
- the outer boundary or partition walls 44 and 49 are arranged sealed relative to the peripheral wall 30 in a corresponding manner.
- the boundary or partition walls 44, 45, 46, 47, 48, 49 may also be designed to be flexible in order to achieve an adaptation to components or rotors with different geometries.
- each have a surface 54 of an associated vibration device 56 is provided, which in the present case as an ultrasonic sonotrode not shown and is assigned as an end boundary wall of the respective blasting chamber 38, 40, 42 ,
- the respective surface 54 of the vibration device 56 is caused to oscillate, as a result of which the grit-which in the present case is in the form of a sphere-is accelerated for shot peening.
- one and the same vibration device 56 is used for all the jet chambers 38, 40, 42-that is to say also for the jet chambers 50 of the rotor blades 16, 18 the respective blasting chamber 38, 40, 42 and 50 associated vibrating or the blasting material acting surface 54 respectively by the boundary or partition walls 44, 45, 46, 47, 48, 49 are divided.
- each of the jet chambers 38, 40, 42 can also have a separate vibration device 56.
- Each of the sealing fins 36 comprises two broad sides 58, 60, which are annular in plan view, and a rounded, narrow end face 62. Furthermore, it can be seen that each sealing finger 36 comprises a web neck 64, in which the circumferential wall 30 merges into the sealing finger 36.
- the Dichtfin 36 - as can be seen in particular from Fig. 1 - taper towards the outer peripheral side, with the respective individual faces of each of the two broad sides 58, 60 extend substantially plane-parallel to each other.
- a radial extension direction is shown on one of the sealing fins 36 with the dot-dash line E (blasting chamber 38). In this case, this extension direction E is essentially identical for all sealing fins 36.
- this angle ⁇ is at least approximately 90 °, since in this way a particularly uniform radiation of both broad sides 58, 60 of the respective sealing finger 36 can be realized.
- This resulting particularly advantageous solidification of the two broad sides 58, 60 turns in particular also when the angle ⁇ is between 85 ° and 90 °.
- each of the surfaces 54 of the associated vibrator 56 and a respective surface normal O (blasting chamber 42) of the respective broad side 58, 60 of the respective sealing finger 36 are substantially at least approximately parallel relative to one another.
- the boundary or partition walls 44, 45, 46, 47, 48, 49 of the Strahlkam- If, as explained above, the surface 54 is not arranged at least approximately perpendicularly to the radial direction of extent of the sealing fins 36, they extend substantially parallel to the extension direction E of the respective sealing web 36 or parallel to their respective broad sides 58, 60 but the angle ⁇ is between 70 ° and 90 °, so each of the boundary or partition walls 44, 45, 46, 47, 48, 49 relative to the respective surface normal O, of course, also at a correlating angle.
- the relative arrangement of the sealing fins 36 with respect to the corresponding surfaces 54 of the associated vibration device 56 can either be done by positioning the respective blasting chamber 38, 40, 42 correspondingly opposite the blisk 10, or vice versa, that the blisk 10 corresponding to the respective blasting chamber 38, 40, 42 is arranged.
- a retaining device 66 can be provided, by means of which the blisk 10 can be arranged opposite the blasting chamber 38, 40, 42.
- the holding device 66 includes, for example, in the figure, only schematically indicated bearing blocks 68 through which the blisk 10 is rotatably mounted about its axis of rotation R.
- each of the sealing fins 36 can be circumferentially solidified or blasted in one process step.
- the relative positioning of the sealing fins 36 and the surfaces 54 can also be made by the chamber walls 44, 45, 46, 47, 48, 49 of the respective blasting chamber 38, 40, 42 serving as stops against the peripheral wall 30 of the blisk 10.
- a distribution device 70 is provided, which also has a vibrating Surface 72 includes.
- the distribution device 72 can also be designed as an ultrasonic sonotrode.
- other configurations such as, for example, a compressed-air device would also be conceivable, with which a homogeneous distribution of the blasting material over the respective surfaces 54 can be realized.
- the apparatus described here or the associated method can be applied not only to a blisk 10, but of course also to other components of gas turbines.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006058678A DE102006058678A1 (de) | 2006-12-13 | 2006-12-13 | Verfahren und Vorrichtung zum Oberflächenstrahlen eines Teilelements eines Bauteils einer Gasturbine |
PCT/DE2007/002196 WO2008071162A1 (de) | 2006-12-13 | 2007-12-05 | Verfahren und vorrichtung zum oberflächenstrahlen eines teilelements eines bauteils einer gasturbine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2125292A1 true EP2125292A1 (de) | 2009-12-02 |
EP2125292B1 EP2125292B1 (de) | 2013-11-20 |
Family
ID=39232846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07856057.0A Not-in-force EP2125292B1 (de) | 2006-12-13 | 2007-12-05 | Verfahren und vorrichtung zum oberflächenstrahlen eines teilelements eines bauteils einer gasturbine |
Country Status (5)
Country | Link |
---|---|
US (1) | US8943659B2 (de) |
EP (1) | EP2125292B1 (de) |
CA (1) | CA2672254A1 (de) |
DE (1) | DE102006058678A1 (de) |
WO (1) | WO2008071162A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006058679A1 (de) * | 2006-12-13 | 2008-06-19 | Mtu Aero Engines Gmbh | Vorrichtung und Verfahren zum Oberflächenstrahlen eines Bauteils einer Gasturbine |
DE102008010847A1 (de) * | 2008-02-25 | 2009-08-27 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren und Vorrichtung zum Kugelstrahlverfestigen von Bliskschaufeln |
DE102009023060A1 (de) * | 2009-05-28 | 2010-12-02 | Mtu Aero Engines Gmbh | Verfahren und Vorrichtung zum Oberflächenverfestigen eines Bauteils, welches zumindest im Bereich seiner zu verfestigenden Oberfläche aus einer intermetallischen Verbindung besteht |
DE102010001287A1 (de) * | 2010-01-27 | 2011-07-28 | Rolls-Royce Deutschland Ltd & Co KG, 15827 | Verfahren und Vorrichtung zur Oberflächenverfestigung von Bliskschaufeln |
FR3004668B1 (fr) * | 2013-04-18 | 2015-06-05 | Snecma | Procede de deformation d'une piece de turbomachine par grenaillage pour correction d'un defaut geometrique |
FR3004669B1 (fr) * | 2013-04-18 | 2015-05-15 | Snecma | Procede de deformation par grenaillage pour l'assemblage de deux pieces de turbomachine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2689431B1 (fr) | 1992-04-06 | 1995-10-20 | Teknoson | Procede et dispositif notamment de durcissement par ultrasons de pieces metalliques. |
FR2801236B1 (fr) | 1999-11-18 | 2001-12-21 | Snecma | Procede et machine de grenaillage par ultrasons de pieces sur une roue |
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 |
DE102004037954A1 (de) * | 2004-08-05 | 2006-03-16 | Mtu Aero Engines Gmbh | Vorrichtung zum Oberflächenstrahlen von Bauteilen |
-
2006
- 2006-12-13 DE DE102006058678A patent/DE102006058678A1/de not_active Ceased
-
2007
- 2007-12-05 EP EP07856057.0A patent/EP2125292B1/de not_active Not-in-force
- 2007-12-05 WO PCT/DE2007/002196 patent/WO2008071162A1/de active Application Filing
- 2007-12-05 US US12/519,127 patent/US8943659B2/en not_active Expired - Fee Related
- 2007-12-05 CA CA002672254A patent/CA2672254A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2008071162A1 * |
Also Published As
Publication number | Publication date |
---|---|
US8943659B2 (en) | 2015-02-03 |
WO2008071162A1 (de) | 2008-06-19 |
EP2125292B1 (de) | 2013-11-20 |
CA2672254A1 (en) | 2008-06-19 |
DE102006058678A1 (de) | 2008-07-03 |
US20100125990A1 (en) | 2010-05-27 |
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