US20090044406A1 - Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith - Google Patents

Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith Download PDF

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Publication number
US20090044406A1
US20090044406A1 US12/093,843 US9384306A US2009044406A1 US 20090044406 A1 US20090044406 A1 US 20090044406A1 US 9384306 A US9384306 A US 9384306A US 2009044406 A1 US2009044406 A1 US 2009044406A1
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US
United States
Prior art keywords
component
shot peening
ultrasonic shot
small edge
housing
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.)
Abandoned
Application number
US12/093,843
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English (en)
Inventor
Thomas Dautl
Thomas Peschke
Alexander Winkler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines AG
Original Assignee
MTU Aero Engines GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37714636&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20090044406(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Assigned to MTU AERO ENGINES GMBH reassignment MTU AERO ENGINES GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAUTL, THOMAS, PESCHKE, THOMAS, WINKLER, ALEXANDER
Publication of US20090044406A1 publication Critical patent/US20090044406A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/78—Making other particular articles propeller blades; turbine blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
    • B23H9/10—Working turbine blades or nozzles
    • 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
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/083—Deburring
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49316—Impeller making
    • Y10T29/49336—Blade making

Definitions

  • the invention relates to a method for producing metallic components, particularly for turbo machines, having small edge radii.
  • edges on components may be necessary for the most varied reasons. These include the improvement of strength and/or aerodynamics, as well as avoiding the risk of injury. Depending on the component, these may be sharp edges on components that are attached to adjacent surfaces of the component. Alternatively, the edges may also form planar or three-dimensional surfaces which connect adjacent, generally considerably larger, surfaces of the component. The last-mentioned case usually applies to relatively roughly pre-manufactured edges on flow-mechanically effective blades of turbo machines, in particular on guide vanes and rotor blades of gas turbines, in which case the blade edges must be connected to the adjacent pressure side and/or suction side of the blade in consideration of aspects of strength and aerodynamics.
  • the components for turbo machines having small and minute edges or a specific geometry of the edges such as, for example, blade roots or blade profile parts, have been solidified by conventional steel shot peening.
  • the components must be rounded to at least an “ideal” radius of 0.3 mm. Edges of less than 45° must be rounded at the fringes toward the component surface. In so doing, areas that are peened for solidification must be defined to be at least 0.05 mm. Only this avoids material shifting.
  • the inventive method for producing metallic components comprises the following steps:
  • the method in accordance with the invention permits a stable process for the manufacture of small and minute radii and/or specific geometric configurations of the edges.
  • the edge radii In areas that must be peened for solidification, the edge radii must be defined to be at least 0.05 mm. As a result, there is, in fact, no material shifting. Referring to the suggested method, minimum data regarding the edges or geometry of the radii is sufficient. Due to the inventive combination of the production of small and minute geometric configurations of edge radii and the unselective ultrasonic shot peening with round spheres displaying the quality of ball-bearings, a reproducible and optimal manufacturing quality is achieved.
  • the duration of ultrasonic shot peening per peening area be 20 seconds to 30 minutes, preferably 5 minutes to 15 minutes. In so doing, the duration largely depends on the component material that is to be solidified.
  • a sphere size of 0.3 mm to 2 mm be used in ultrasonic shot peening. Also, in this case the selection of the sphere size is of importance with regard to the component material that is to be solidified and the size of the component.
  • a sphere hardness of up to 70 HRC be used in ultrasonic shot peening. This corresponds approximately to ball-bearing quality.
  • a ball mass of 1 g to 100 g per component be used in ultrasonic shot peening.
  • the spheres in the housing of the ultrasonic shot peening device should not be packed too densely in order allow an appropriate vibration of the spheres.
  • one/more component(s) to be solidified be placed/mounted in a housing.
  • peening for the solidification of only individual sections or areas is possible.
  • the housing have a volume of 15 mm 3 to 8 m 3 , preferably of 1 m 3 to 3 m 3 .
  • the housing dimensions are a direct function of the sizes of the components.
  • inventive method provides that spheres of steel, tungsten carbide, ceramic or glass be used for ultrasonic shot peening.
  • alloyed and unalloyed steels may be used.
  • a ceramic material that may be used is, for example, zirconium oxide.
  • An inventive component for a turbo machine displays the features, namely, that the component is produced of metal and has edge radii ⁇ 0.3 mm, preferably 0.05 mm, which have been peened for solidification.
  • the component edges may have different angles, e.g., 45° or 90°.
  • Such types of edges may be, for example, blade edges of compressor blades and/or turbine blades or also edges on blade roots.
  • FIG. 1 is a flowchart of a first embodiment of a method in accordance with the invention.
  • FIG. 1 shows a flowchart of a first embodiment of an inventive method which uses a metallic component for machining.
  • a metallic component for machining.
  • high-quality alloys e.g., nickel-based alloys
  • these blade components frequently have so-called fur-tree blade roots with several edges.
  • the component is initially machined, for example, machined down, or ground or treated electrochemically, for example, by an erosion process. In so doing, corresponding edges are produced or reworked.
  • the component is transferred to an ultrasonic shot peening station.
  • the component depending on its size, is placed in a housing having a size of 15 mm 3 to 8 m 3 .
  • the minute radii of 0.05 mm are solidified by ultrasonic shot peening.
  • the peening process lasts approximately 1 minute to 5 minutes.
  • a piezoelectric transducer emits ultrasonic waves with an adjustable frequency of 18 kHz to 20 kHz.
  • the housing of the ultrasonic shoot peening devices contains, in addition to the component, ideal steel spheres, i.e., spheres displaying ball-bearing quality and a hardness of approximately 70 HRC, and a sphere size of 0.3 mm to 2 mm.
  • the sound waves are amplified when they pass through an acoustic amplifier in a housing with the components to be processed and with the ball-bearing spheres.
  • the spheres that are excited by the ultrasound waves with a vibration wave of 40 ⁇ m impinge on the vibrating walls and are reflected by the walls' surfaces.
  • the spheres collide with each other and are scattered in an unordered manner like gas molecules in the housing. As a result of this, a reproducible homogeneous solidification of the edges and radii is achieved. In so doing, the components themselves do not come into contact with the housing walls.
  • the method in accordance with the invention can be used with all types of components and, in particular, with turbo machine blades, be it housings, disks, rings, compressors, pumps and turbines in axial, diagonal and radial construction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US12/093,843 2005-11-17 2006-11-10 Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith Abandoned US20090044406A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102005054866A DE102005054866A1 (de) 2005-11-17 2005-11-17 Verfahren zum Herstellen von metallischen Bauteilen, insbesondere für Turbomaschinen, mit kleinen Kantenradien
DE102005054866.0 2005-11-17
PCT/DE2006/001972 WO2007056978A1 (de) 2005-11-17 2006-11-10 Verfahren zum herstellen von metallischen bauteilen, insbesondere für turbomaschinen, mit kleinen kantenradien, sowie damit hergestelltes bauteil

Publications (1)

Publication Number Publication Date
US20090044406A1 true US20090044406A1 (en) 2009-02-19

Family

ID=37714636

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/093,843 Abandoned US20090044406A1 (en) 2005-11-17 2006-11-10 Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith

Country Status (6)

Country Link
US (1) US20090044406A1 (de)
EP (1) EP1954421B2 (de)
CA (1) CA2629219A1 (de)
DE (1) DE102005054866A1 (de)
PL (1) PL1954421T5 (de)
WO (1) WO2007056978A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110030434A1 (en) * 2008-04-18 2011-02-10 Snecma Method for ultrasound shot-blasting of turbomachine parts
FR3061055A1 (fr) * 2016-12-26 2018-06-29 Safran Aircraft Engines Dispositif pour le traitement d'une piece metallique, procede et ensemble de projectiles associes
CN110421489A (zh) * 2019-08-14 2019-11-08 苏州科技大学 一种聚焦超声磨料射流复合抛光装置及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008008894A1 (de) * 2008-02-13 2009-08-20 Man Turbo Ag Verfahren zur Herstellung eines Bauteiles für eine thermische Maschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426867A (en) * 1981-09-10 1984-01-24 United Technologies Corporation Method of peening airfoils and thin edged workpieces
US6336844B1 (en) * 1999-11-18 2002-01-08 Snecma Moteurs Method and machine for the ultrasonic peening of parts on a wheel
US6343495B1 (en) * 1999-03-23 2002-02-05 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Apparatus for surface treatment by impact
US6536109B2 (en) * 2000-11-16 2003-03-25 Snecma Moteurs Method for extending the life of attachments that attach blades to a rotor
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
US7389663B2 (en) * 2006-10-20 2008-06-24 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Acoustic shot peening method and apparatus
US7754033B2 (en) * 2002-10-30 2010-07-13 Nippon Steel Corporation Method of improvement of toughness of heat affected zone at welded joint of steel plate

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801322B1 (fr) † 1999-11-18 2002-02-08 Snecma Procede de grenaillage par ultrasons de surfaces annulaires de grandes dimensions sur des pieces minces
DE10258920A1 (de) † 2002-12-17 2004-07-01 Rolls-Royce Deutschland Ltd & Co Kg Verfahren und Vorrichtung zur Formgebung durch elektrochemisches Abtragen
DE10319020B4 (de) * 2003-04-27 2006-06-14 Mtu Aero Engines Gmbh Verfahren zum Verrunden von Kanten an Schaufeln von Turbomaschinen
FR2873609B1 (fr) * 2004-07-30 2008-02-22 Sonats Soc Des Nouvelles Appli Projectiles, dispositifs et installations de grenaillage par ultrasons et pieces ainsi traitees

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426867A (en) * 1981-09-10 1984-01-24 United Technologies Corporation Method of peening airfoils and thin edged workpieces
US6343495B1 (en) * 1999-03-23 2002-02-05 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Apparatus for surface treatment by impact
US6336844B1 (en) * 1999-11-18 2002-01-08 Snecma Moteurs Method and machine for the ultrasonic peening of parts on a wheel
US6536109B2 (en) * 2000-11-16 2003-03-25 Snecma Moteurs Method for extending the life of attachments that attach blades to a rotor
US7754033B2 (en) * 2002-10-30 2010-07-13 Nippon Steel Corporation Method of improvement of toughness of heat affected zone at welded joint of steel plate
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
US7647800B2 (en) * 2004-07-30 2010-01-19 Snecma Shot, devices, and installations for ultrasonic peening, and parts treated thereby
US7389663B2 (en) * 2006-10-20 2008-06-24 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Acoustic shot peening method and apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110030434A1 (en) * 2008-04-18 2011-02-10 Snecma Method for ultrasound shot-blasting of turbomachine parts
US8627695B2 (en) * 2008-04-18 2014-01-14 Snecma Method for ultrasound shot-blasting of turbomachine parts
FR3061055A1 (fr) * 2016-12-26 2018-06-29 Safran Aircraft Engines Dispositif pour le traitement d'une piece metallique, procede et ensemble de projectiles associes
WO2018122523A1 (fr) * 2016-12-26 2018-07-05 Safran Aircraft Engines Dispositif et procédé pour le traitement d'une piece metallique
CN110421489A (zh) * 2019-08-14 2019-11-08 苏州科技大学 一种聚焦超声磨料射流复合抛光装置及方法

Also Published As

Publication number Publication date
EP1954421B2 (de) 2016-07-13
EP1954421B1 (de) 2011-06-15
EP1954421A1 (de) 2008-08-13
WO2007056978A1 (de) 2007-05-24
PL1954421T3 (pl) 2011-11-30
DE102005054866A1 (de) 2007-05-31
CA2629219A1 (en) 2007-05-24
PL1954421T5 (pl) 2017-07-31

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MTU AERO ENGINES GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DAUTL, THOMAS;PESCHKE, THOMAS;WINKLER, ALEXANDER;REEL/FRAME:021501/0398;SIGNING DATES FROM 20080510 TO 20080619

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION