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WO2008104155A1 - Procédé et dispositif de pulvérisation de surface - Google Patents

Procédé et dispositif de pulvérisation de surface Download PDF

Info

Publication number
WO2008104155A1
WO2008104155A1 PCT/DE2008/000309 DE2008000309W WO2008104155A1 WO 2008104155 A1 WO2008104155 A1 WO 2008104155A1 DE 2008000309 W DE2008000309 W DE 2008000309W WO 2008104155 A1 WO2008104155 A1 WO 2008104155A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
mask
blasting
mask part
mask opening
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.)
Ceased
Application number
PCT/DE2008/000309
Other languages
German (de)
English (en)
Inventor
Erwin Bayer
Max Niegl
Holger Polanetzki
Philipp THÜMMLER
Michael Lahres
Hans Maier
Martin STÖER
Harry Wieland
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
Application filed by MTU Aero Engines GmbH filed Critical MTU Aero Engines GmbH
Publication of WO2008104155A1 publication Critical patent/WO2008104155A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2221/00—Treating localised areas of an article

Definitions

  • the invention relates to a method and a device for surface blasting, in particular for ultrasonic shot peening of a component, in particular a gas turbine, in the preambles of claims 1 and 14 specified type.
  • Such a method and such a device can already be seen, for example, from WO 93/20247 A1 as known.
  • the local method and the device there for ultrasonic shot peening of a plurality of teeth of a toothing comprehensive portion of the surface of a component is used.
  • a blasting serve metal balls, which can be accelerated by means of an ultrasonic sonotrode vibration device.
  • the part of the toothing of the component to be radiated is delimited by a blasting chamber, which comprises corresponding slide walls.
  • a disadvantage of the known method and the known device is the fact that, for example, the teeth of the toothing are exposed to different sub-areas of the surface different loads.
  • the respective tooth gap bottom and the respective pressure flank of the tooth is subjected to completely different loads than is the case, for example, in the case of the counter flank or the end face of the tooth. Due to its shape, moreover, the problem arises that, for example, the corner regions, radii or the like of a tooth of the toothing are optionally extremely difficult to solidify.
  • an effective and load-compatible solidification of the respective partial area of the surface is not readily possible.
  • Object of the present invention is therefore to provide a method and an apparatus of the type mentioned, with which a more effective and load-fairer solidification of individual portions of the surface of the portion is possible.
  • This object is achieved by a method and an apparatus having the features of claims 1 and 14, wherein it is the component to a toothed component, in particular a gear or pinion.
  • Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the respective dependent claims.
  • the component is positioned relative to a mask part, by means of which at least one associated mask opening of the corresponding, to be irradiated portion the surface of the component is limited.
  • the mask part is positioned relatively between the component and a vibration device for accelerating the blasting material, wherein the at least one mask opening of the mask part is used as blasting chamber.
  • the component can be positioned in a simple manner opposite relative to the vibration device, wherein the mask part or its mask opening arranged between the part region to be machined of the surface of the component and the vibration device limits the beam space accordingly.
  • the mask part is used for surface blasting a portion of a toothing.
  • the individual teeth of the toothing usually have a complex geometry, so that it is possible with the now used each mask part, different sub-areas - for example, flat partial areas or corner areas with radii - to irradiate individually.
  • an individual Radiation result over different portions of each tooth can be achieved, so that overall results in a very stable and wear-resistant teeth.
  • At least one of the steel chamber formed by the mask opening of the mask part associated reflection element, in particular reflection sheet is used for surface blasting of the component.
  • a reflection element or reflection sheet it is also possible, for example, to effectively surface-blast subregions lying laterally of the blasting chamber, for example the end faces or tooth edges of the respective tooth, without damage.
  • the component is moved relative to the mask opening of the first part.
  • a plurality of mask openings of one or more mask parts to be used for surface blasting of a plurality of subregions, so that a plurality of subregions of the surface can be blasted simultaneously. It will be appreciated that with such surface blasting, moving the component relative to the mask opening of the mask member need not be required.
  • a blasting material is used for surface blasting, whose blasting particles have at least two different particle sizes and / or consist of at least two different materials.
  • the blasting particles not only have a substantially uniform size or consist of a single material, but which have at least two different particle sizes and / or are made of different materials.
  • the planar or planar partial areas of the surface of the component are blasted and solidified extremely homogeneously and uniformly by means of the larger jet particles be used while the beam particles with smaller particle size in particular serve that, for example, even corners with inner radii or the like can be solidified sufficiently well with a correspondingly small diameter.
  • a targeted blasting agent mixture with two preferably significantly different abrasive sizes or particle sizes is thus achieved that on the one hand with the large beam particles, the desired intensity and solidification is achieved and on the other with the small beam particles, the inner radii or corners of the possibly complex component completely can be solidified or blasted a beam.
  • beam particles of different materials are used, it is conceivable, for example, that the kinetic energy of the smaller beam particles is increased by a corresponding material with respect to the larger beam particles of higher density, so that a homogeneous intensity distribution, for example, in the inner radii or corners of the partial area the surface of the component can be guaranteed.
  • a suitable mixture of, for example, larger beam particles with relatively lower density and smaller Stralilteilchen with relatively higher density both over the flat or partial areas as well as over the corners or inner radii of the component a homogeneous intensity distribution of the surface radiation and thus a uniform Solidification of the respective sub-area can be achieved.
  • the blasting material consists of blasting balls which consist of at least two different diameters and / or of at least two different materials.
  • the particle size or the diameter of the at least one part of the blasting material - for example the smaller blasting particles or blasting balls - are adapted to the respective radii, corners or the like of the component.
  • the device according to the invention for surface blasting is characterized in particular by a mask part which can be positioned relative to the component, by means of which mask opening the corresponding partial area of the surface to be radiated of the component is limited.
  • a mask part which can be positioned relative to the component, by means of which mask opening the corresponding partial area of the surface to be radiated of the component is limited.
  • a particularly advantageous and simple device can also be created if a blasting chamber is formed by the mask opening within the mask part, in which the blasting material is preferably taken captive. Since the blasting chamber is preferably formed by the mask opening, which is present anyway, within the mask part, this results in a device of extremely simple construction, by means of which the respective subregion of the surface of the component is to be blasted.
  • the device according to the invention - and in particular the mask part - could be arranged relative to a stationary arranged component.
  • the movable component is positioned on a stationary device, in particular a stationary mask part.
  • FIG. 1 is a schematic perspective view of a trained as rechteckförrnige plate mask part with an approximately quarter-circular ring-shaped recess in the region of a mask opening for surface blasting a korrespon- dierenden portion of a surface of a component is arranged, wherein the mask opening extends from the recess to the opposite side of the mask part continuously;
  • FIG. 2 shows a schematic perspective view of the mask part according to FIG. 1, wherein a partially recognizable component is positioned relative to it with a spur toothing, which dips into the mask part in the region of the quarter-circle-annular recess, whereby a corresponding partial region of the toothing of the component coincides with the one in FIG Figure 1 recognizable mask opening is arranged, wherein the component is positioned by means of a partially recognizable holding device relative to the mask part;
  • Figure 3 is a schematic sectional view through the relative to the mask member positioned component, wherein on the side facing away from the component of the mask part in the region of the mask opening, a vibration device is positioned to act on blasting material, whereby by means of the mask opening a blasting chamber is formed which the discharge of blasting material essentially limited;
  • Figure 4 is a schematic sectional view through the device with the mask part and the vibration device for surface blasting of the component according to an alternative embodiment.
  • FIG. 1 shows a schematic perspective view of a mask part 10 of a device for surface blasting, which is explained in more detail below, in particular for ultrasonic shot peening of a component (20, FIG. 2), in particular a gas trubline.
  • the component is a gear or pinion, in particular for a transmission.
  • the mask part 10 is designed here as a substantially rectangular metal plate.
  • a recess 14 is introduced into the mask part 10, which - viewed in plan view - has an approximately quarter-circle annular basic contour. It can be seen that the recess 14 in a central or central area is introduced deeper into the mask part 10, as at the edge sides.
  • a mask opening 16 can be seen in FIG.
  • the mask opening 16 exits on the broad side 12 opposite broad side 18 of the mask part 10 again.
  • FIG. 2 which shows the mask part 10 according to FIG. 1 in a schematic perspective view from another direction
  • a component 20 is positioned relative to the mask part 10.
  • the component 20 is designed as part of a gas turbine and essentially has an annular basic contour. In Figure 2, however, only about a quarter of this component 20 is shown.
  • the approximately quarter-circle-shaped contour of the recess 14 is explained in this case. Namely, it is adapted such that the component 20 dips approximately obliquely into the mask part 10 in the region of a quarter-circle ring, namely the recess 14.
  • an imaginary, unrecognizable central axis of the component 20 does not extend perpendicularly, but rather obliquely to the corresponding broad side 12 of the mask part 10.
  • the component 20 is thereby attached to the device for surface blasting by means of a part 22 of an otherwise not further recognizable holding device 24 or held on the mask part 10.
  • the component 20 is presently provided on its dipping into the recess 14 of the mask part 10 end face with a toothing 26, which is only schematically seen in conjunction with Figure 3. Accordingly, the toothing 26 in the present case forms an end toothing of the component 20.
  • FIGS. 3 and 4 show two alternative embodiments of the device for surface blasting of a respective component 20 in a schematic sectional view
  • the principle of operation or surface blasting is now explained. tert.
  • the mask part 10 is shown in Figure 3 in a slightly different from Figure 1 embodiment, because the recess 14 in this case for the sake of simplicity not obliquely to the broad side 12, but rather is introduced perpendicular thereto.
  • the mask part 10 is arranged on a work table 28 of a corresponding processing machine, only two fastening strips 30 of which can be seen.
  • a respective tooth 32 of the toothing 26 on the end face of the component 20 From a respective tooth 32 of the toothing 26 on the end face of the component 20, one of the two tooth flanks 34 can be seen, which extends between an associated tooth top side 36 and a respective tooth gap bottom 38.
  • an Innradius 40 which, in a manner which will be explained in more detail, is also to be solidified by means of surface blasting in addition to the tooth flank 34 or the tooth gap bottom 38.
  • two end faces 42, 44 of the respective tooth 32 extend approximately perpendicular to the tooth top side 36 or to the tooth flank 34.
  • the component 20 or the toothing 26 protrudes into the recess 14 of the mask part 10 so far that the respective tooth top side 36 is assigned to the recess 14 approximately at the level of a corresponding lower surface 46 (FIG.
  • the mask opening 16 is introduced into the mask part 10.
  • the width of the mask opening 16 is approximately matched to the width of the toothing or of the respective tooth 32.
  • the mask opening may also have other contours or dimensions.
  • a vibration device 48 which in particular comprises an ultrasonic sonotor.
  • this vibration device 48 By means of this vibration device 48, one of the mask opening 16 facing surface 50 to vibrate, so that by means of this a blasting material for surface blasting of the respective tooth 32 of the toothing 26 can be acted upon.
  • blasting balls 52 in particular high-strength steel balls, are used as blasting material. puts. Accordingly, if the surface 50 of the vibration device 48 is set in corresponding oscillations, then a corresponding partial region of the respective tooth 32 of the toothing 26 can be acted upon or solidified on the side of the mask opening 16 opposite the surface 50 of the vibration device 48.
  • the size of the mask opening 16 determines or limits a corresponding partial area on the surface of the component 20, which is to be correspondingly surface-blasted by means of the vibration device 48 arranged on the opposite side of the component 20.
  • the mask opening 16 within the mask part 10 essentially serves as a blasting chamber 54, so that the blasting balls 52 can not escape.
  • the blasting chamber 54 may also be associated with reflection elements or reflecting plates, not shown, in order to guide the blasting balls 52 to a desired partial area, for example the end faces 42, 44 of the toothing 26.
  • additional, movable limiting elements or boundary walls may be provided to prevent the escape of blasting material from the blasting chamber 54. This is the case in particular when the mask opening 16 in certain sections projects beyond the corresponding part of the component 20 to be radiated.
  • FIGS. 1 to 3 It can thus be seen from FIGS. 1 to 3 that certain subregions of the component 20 are released for surface blasting by the corresponding mask opening 16, while other subregions are correspondingly covered.
  • both the corresponding desired tooth flank 34 - for example, the pressure flank - and the tooth gap bottom 38 as well as the inner radius 40 alike solid and homogeneously solidified can be used in the present surface blasting beyond a blasting in the form of jet particles or blasting balls 52, which have at least two different particle sizes.
  • a blasting in the form of jet particles or blasting balls 52 which have at least two different particle sizes.
  • smaller and larger blasting balls 52 are arranged, which preferably have a considerably different particle size or a different diameter.
  • the particle size or the diameter of the larger jet balls 52 may be, for example, in the range of about 1.0 mm to 4.0 mm, wherein these have in particular a size of about 1.2 mm to 1.8 mm.
  • the particle size or diameter of the larger blasting balls 52 is in the range of about 1.5 mm. If, as in the present case, the larger blasting balls 52 are made of a preferably higher-strength steel alloy, the result is a particularly advantageous and homogeneous hardening, in particular of the planar or planar partial areas of the surface of the component 20.
  • the small beam particles or jet balls 52 which may also be made of a high-strength steel alloy, for example, also have a particle size or a diameter in a range between 0.3 mm and 1.3 mm, in particular smaller jet balls 52 in a Range between 0.5 mm and 1.0 mm are used.
  • the particle size or diameter of the smaller jet balls 52 is about 0.8 mm.
  • the smaller jet balls 52 are adapted in their particle size to the respective inner radii 50 or the like so that they can be solidified accordingly. It is clear that for this purpose the particle size of the small beam particles 52 must be measured correspondingly smaller than or equal to the corresponding inner radius 40.
  • the larger or smaller beam balls 52 are preferably made of different materials or they have a different density.
  • both the flat and the angular sections the surface of the component 20 are uniformly or homogeneously solidified or that a homogeneous intensity distribution over the entire, each to be radiated portion can be realized.
  • the component 20 is moved stepwise to bring the corresponding portions - for example, the respective tooth flank 34 and the associated tooth gap bottom 38 - in registration with the mask opening 16.
  • the component 20 is moved to surface-blast a plurality of portions relative to the mask opening 16 of the mask member 10.
  • a plurality of partial areas of the surface of the component 20 to be surface-blasted simultaneously by using a plurality of mask openings 16 within one or more mask parts 10, which are positioned corresponding to one another.
  • the illustrated device can be easily integrated into a production line, or, for example, in a deburring machine with a small footprint and inexpensive.
  • a plurality of such devices can be arranged one behind the other in order, for example, first to irradiate one partial area of the component in each case, and then other partial areas in the other device.
  • the already mentioned reflection elements laterally in the respective blasting chamber 52 enable the effective blasting of, for example, the sand edges or the end faces 42, 44 without causing damage in this area. In other words, it can be ensured by the reflection elements in the respective blasting chamber 52 that the balls are guided centrally to the tooth edge or end face 42, 44 in order to avoid cracks at the transitions or edges.
  • the process according to the invention enables high residual stresses close to the surface and the avoidance of softening effects due to Herz's pressure.
  • hand deburring, in particular of the tooth edges can be dispensed with, since these are also rounded during surface blasting.
  • the respective tooth edges and the tooth gap bottom 38, as well as the tooth flanks 34 are solidified very effectively and the surface roughness is markedly increased, without unduly deforming the edges despite low rounding effort.
  • FIG. 4 shows an alternative embodiment of the device according to FIG. 3, again the component 20 being positioned relative to the stationary mask part 10 fastened to the work table 28.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

L'invention concerne un procédé de pulvérisation de surface, notamment de grenaillage ultrasonore, d'un composant (20), notamment d'une turbine à gaz, consistant à solidifier une partie de la surface du composant (20) par pulvérisation de matériau; et à positionner le composant (20) par rapport à un élément masque (10) dont la ou les ouvertures de masque correspondantes (16) servent à délimiter la partie correspondante de la surface du composant (20) à pulvériser. L'invention concerne également un dispositif destiné à la réalisation d'un tel procédé.
PCT/DE2008/000309 2007-02-27 2008-02-21 Procédé et dispositif de pulvérisation de surface Ceased WO2008104155A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007009470.3 2007-02-27
DE200710009470 DE102007009470A1 (de) 2007-02-27 2007-02-27 Verfahren und Vorrichtung zum Oberflächenstrahlen

Publications (1)

Publication Number Publication Date
WO2008104155A1 true WO2008104155A1 (fr) 2008-09-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000309 Ceased WO2008104155A1 (fr) 2007-02-27 2008-02-21 Procédé et dispositif de pulvérisation de surface

Country Status (2)

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DE (1) DE102007009470A1 (fr)
WO (1) WO2008104155A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11566298B2 (en) 2019-05-08 2023-01-31 Raytheon Technologies Corporation Systems and methods for manufacturing components for gas turbine engines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010006094B4 (de) 2010-01-28 2013-06-27 Siemens Aktiengesellschaft Verfahren zur Oberflächenverfestigung einer Komponente einer Windturbine
EP2728345B1 (fr) 2012-10-31 2016-07-20 MTU Aero Engines AG Procédé de détermination d'une caractéristique de couche marginale d'un composant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01312029A (ja) * 1988-06-10 1989-12-15 Denki Kogyo Co Ltd オーステナイト系ステンレス鋼板及びオーステナイト系耐熱鋼板の強化方法
US6289705B1 (en) * 1999-11-18 2001-09-18 Snecma Moteurs Method for the ultrasonic peening of large sized annular surfaces of thin parts
US6336844B1 (en) * 1999-11-18 2002-01-08 Snecma Moteurs Method and machine for the ultrasonic peening of parts on a wheel
US20020042978A1 (en) * 2000-10-12 2002-04-18 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Method of shot blasting and a machine for implementing such a method
US20020124402A1 (en) * 2000-11-16 2002-09-12 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
WO2006061004A2 (fr) * 2004-12-10 2006-06-15 Mtu Aero Engines Gmbh Procede pour exposer des cavites a des rayonnements, notamment des cavites situees au niveau de turbines a gaz

Family Cites Families (1)

* Cited by examiner, † Cited by third party
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.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01312029A (ja) * 1988-06-10 1989-12-15 Denki Kogyo Co Ltd オーステナイト系ステンレス鋼板及びオーステナイト系耐熱鋼板の強化方法
US6289705B1 (en) * 1999-11-18 2001-09-18 Snecma Moteurs Method for the ultrasonic peening of large sized annular surfaces of thin parts
US6336844B1 (en) * 1999-11-18 2002-01-08 Snecma Moteurs Method and machine for the ultrasonic peening of parts on a wheel
US20020042978A1 (en) * 2000-10-12 2002-04-18 Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces Method of shot blasting and a machine for implementing such a method
US20020124402A1 (en) * 2000-11-16 2002-09-12 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
WO2006061004A2 (fr) * 2004-12-10 2006-06-15 Mtu Aero Engines Gmbh Procede pour exposer des cavites a des rayonnements, notamment des cavites situees au niveau de turbines a gaz

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11566298B2 (en) 2019-05-08 2023-01-31 Raytheon Technologies Corporation Systems and methods for manufacturing components for gas turbine engines

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