EP1101827B1 - Procédé de grenaillage par ultrasons de surfaces annulaires de grandes dimensions sur des pièces minces - Google Patents
Procédé de grenaillage par ultrasons de surfaces annulaires de grandes dimensions sur des pièces minces Download PDFInfo
- Publication number
- EP1101827B1 EP1101827B1 EP00403183A EP00403183A EP1101827B1 EP 1101827 B1 EP1101827 B1 EP 1101827B1 EP 00403183 A EP00403183 A EP 00403183A EP 00403183 A EP00403183 A EP 00403183A EP 1101827 B1 EP1101827 B1 EP 1101827B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- shot blasting
- enclosure
- microbeads
- shot
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C5/00—Devices or accessories for generating abrasive blasts
- B24C5/005—Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- 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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/04—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering with simultaneous application of supersonic waves, magnetic or electric fields
-
- 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 method of ultrasonic shot blasting using a mist of microbeads inside an enclosure and more particularly to a shot blasting of large annular surfaces on parts thin.
- microbeads are commonly rolling bearing balls. They are usually ceramic or steel with a diameter of 0.2mm to 4mm. The shot peening is carried out inside a closed cabin using powered nozzles simultaneously with compressed gas and microbeads, the compressed gas ensuring the propulsion of microbeads.
- the patent FR.2,689,431 discloses a method of blasting said improperly “by ultrasound “consisting of maintaining a” fog "of microbeads inside a pregnant, the interview being carried out using a vibrator acting at frequencies of the order of 20 KH, the enclosure being open, the part being applied against the opening of the enclosure, shot blasting being ensured by the impacts of the microbeads on the part, the enclosure and the room being animated by a relative movement aiming at passing the enclosure on the entire surface of the piece to be blasted.
- the patent also shows how shot blast circular parts such as trees.
- fog is used by analogy with fogs formed of tiny droplets of water. Indeed, in the process of ultrasonic shot blasting, the microbeads are animated with random speeds in modulus and direction, which makes them ricochet between them, against the walls of the enclosure and against the surface of the room in contact with the mist of microbeads.
- This patent gives examples of massive pieces able to resume without distort the stresses resulting from shot blasting.
- this process does not allow to blast thin circular pieces, because they start to deform very early during shot blasting even. Even if the surface is uniformly blasted, these deformations are only partially absorbed at the end of shot blasting because the stress is achieved by the plastic and non-linear deformation of the material.
- the process requires that shot blasting be stopped accurately when the piece has made a turn if you want to get a uniform shot blasting. Indeed, a late stop shot blasting produce a localized excess of shot blasting on a lap premature will produce a localized lack of shot blasting that will be difficult to complete without causing excessive blasting just next door.
- a first problem to solve is to blast without deforming the thin parts and the dimensions of which are greater than those of the shot blasting chamber.
- a second problem to be solved is to guarantee uniform shot blasting over the entire surface to be blasted.
- the invention proposes a method of ultrasonic blasting of annular surfaces of large dimensions on thin pieces, said method of passing the surface to be shot-blasted in front of the opening of a blasting chamber, said enclosure containing a "mist" of microbeads maintained by a vibrator inside the enclosure, said microbeads impinging the portion of the surface to be blasted presented in front of the opening, said impacts causing shot blasting, said enclosure and said part being driven by a relative rotational movement to make the whole of the surface to be blasted in front of the opening of the enclosure during shot blasting.
- shotblasting is done in N passes in front of the opening of the enclosure, each point of the shot-blasting surface passing N times before the opening of the enclosure, each passage providing a fraction substantially equal to 1 / N of total shot blasting to be done.
- N 5 revolutions. This result will obviously be better with a higher number of revolutions, for example 20 or 100. A large number N is needed for shot blasting very thin.
- An advantage of the method is to allow to allow a large shot blasting and pushed to optimal on thin parts without deforming them, since during all shot peening, the stresses imposed on the part remain uniform.
- Part 1 is a training cone on a turbine engine for aircraft.
- Part 1 consists of a thin wall and has a shape circle of revolution around a geometric axis 2.
- Part 1 has a barrel 3 truncated cone whose end of larger diameter is extended radially by a flange 4, said flange 4 itself having a bearing surface 5 to be blasted, said bearing surface 5 being annular, flat and radial.
- An enclosure 10 is used inside which is maintained a fog of microbeads 11, said enclosure being delimited laterally by a wall 12, said enclosure having an opening 13 whose edges are referenced 14.
- a vibrator 20 constituted by a sonotrode 21 resonated by one its ends by a vibration generator 22 which is usually quartz, the other end of the sonotrode 21 having a vibrating surface 23 and substantially plane, said vibrating surface 23 being placed at the bottom of the enclosure 10 and being opposite of the opening 13.
- the vibration generator 22 puts in longitudinal resonance the sonotrode 21.
- the vibrating surface 23 thus excited transmits energy to the microbeads which bounce on the surface to be blasted 5 opposite the opening 13 and on the walls of the chamber 12, said microbeads then gradually losing energy, said microbeads also arriving on the vibrating surface 23 which gives them a new energy.
- the microbeads move inside the enclosure at speeds random in size and direction, these microbeads thus forming a real "fog" of microbeads inside the enclosure 10.
- An advantage of the method is that the shot peening is carried out without contact between the piece 1 and the enclosure 10, which avoids any degradation of the surface of the room.
- the microbeads are retained inside the enclosure 10 because the game E is less than the diameter of said microbeads.
- This arrangement also has the advantage of avoiding the use of wear pads on the enclosure 10
- T To x ⁇ x D / L in which To is the duration of exposure to shot blasting of each element of the surface to be shot blasted 5, D is the average diameter of said surface 5 and L is the width of the enclosure 10 taken tangentially to the displacement of said surface 5 in front of the opening 13, that is to say perpendicular to the plane of the single figure.
- the edges 14 of the enclosure 10 will be given a shape complementary to said surface, in order to maintain the game E.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Sliding-Contact Bearings (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
- Les grandes pièces exigent de grandes cabines,
- Le grenaillage est souvent léger pour ne pas déformer les pièces minces. Celles-ci en effet ne peuvent pas reprendre sans se déformer les sollicitations provoquées par les contraintes de compression résultant d'un grenaillage important, cette compression s'étendant alors en profondeur sous la surface grenaillée.
- L'exposition de la pièce au grenaillage passe par un optimum qui donne à cette pièce la meilleure résistance. Un tel grenaillage est cependant difficile à assurer car les buses de grenaillage sont délicates à régler et ne sont pas stables. Ainsi, un grenaillage insuffisant ne donne pas la résistance prévue, mais il est encore possible d'atteindre l'optimum en effectuant un grenaillage complémentaire. Au contraire, un grenaillage excessif provoque une dégradation superficielle irrécupérable de la pièce avec un abaissement de sa résistance.
- on met une dose de microbilles dans l'enceinte,
- on positionne la pièce 1 de façon à amener la surface à grenailler 5 devant l'ouverture 13 avec un jeu E par rapport aux bords 14 de l'ouverture 13, ledit jeu E étant inférieur au diamètre des microbilles,
- on met la pièce 1 en rotation selon son axe géométrique 2,
- on active le générateur de vibrations 23 pendant une durée préétablie T, ladite vitesse de rotation étant calculée simplement pour que la pièce fasse au moins N = 5 tours pendant la durée T,
- on arrête le générateur de vibration 23 au bout du temps T et on retire la pièce 1.
Claims (1)
- Procédé de grenaillage par ultrasons de surfaces annulaires de grandes dimensions sur des pièces minces, ledit procédé consistant à faire passer la surface à grenailler (5) devant l'ouverture (13) d'une enceinte (10) de grenaillage par ultrasons, ladite ouverture (13) comportant des bords (14), ladite enceinte (10) renfermant un "brouillard" de microbilles (11) entretenu par un vibrateur (20) à l'intérieur de l'enceinte (10), lesdites microbilles venant impacter la portion de la surface à grenailler (5) présentée devant l'ouverture (13), lesdits impacts provoquant le grenaillage, ladite enceinte (10) et ladite pièce (1) étant animées d'un mouvement relatif de rotation pour faire passer toute la surface à grenailler devant l'ouverture (13) pendant le grenaillage,
caractérisé en ce que la surface à grenailler (5) est positionnée devant l'ouverture (13) avec un jeu E, ledit jeu E étant inférieur au diamètre des microbilles utilisées, et en ce que ladite surface effectue au moins N = cinq révolutions devant l'ouverture (13) pendant le grenaillage.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9914481 | 1999-11-18 | ||
FR9914481A FR2801322B1 (fr) | 1999-11-18 | 1999-11-18 | Procede de grenaillage par ultrasons de surfaces annulaires de grandes dimensions sur des pieces minces |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1101827A1 EP1101827A1 (fr) | 2001-05-23 |
EP1101827B1 true EP1101827B1 (fr) | 2005-01-26 |
Family
ID=9552239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00403183A Expired - Lifetime EP1101827B1 (fr) | 1999-11-18 | 2000-11-16 | Procédé de grenaillage par ultrasons de surfaces annulaires de grandes dimensions sur des pièces minces |
Country Status (10)
Country | Link |
---|---|
US (1) | US6289705B1 (fr) |
EP (1) | EP1101827B1 (fr) |
JP (1) | JP4267199B2 (fr) |
CA (1) | CA2325897C (fr) |
DE (1) | DE60017681T2 (fr) |
ES (1) | ES2233310T3 (fr) |
FR (1) | FR2801322B1 (fr) |
RU (1) | RU2210602C2 (fr) |
UA (1) | UA66403C2 (fr) |
WO (1) | WO2001036692A1 (fr) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060016858A1 (en) * | 1998-09-03 | 2006-01-26 | U.I.T., Llc | Method of improving quality and reliability of welded rail joint properties by ultrasonic impact treatment |
US6338765B1 (en) | 1998-09-03 | 2002-01-15 | Uit, L.L.C. | Ultrasonic impact methods for treatment of welded structures |
US20050145306A1 (en) * | 1998-09-03 | 2005-07-07 | Uit, L.L.C. Company | Welded joints with new properties and provision of such properties by ultrasonic impact treatment |
US6458225B1 (en) * | 1998-09-03 | 2002-10-01 | Uit, L.L.C. Company | Ultrasonic machining and reconfiguration of braking surfaces |
US6932876B1 (en) | 1998-09-03 | 2005-08-23 | U.I.T., L.L.C. | Ultrasonic impact machining of body surfaces to correct defects and strengthen work surfaces |
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 |
FR2816537B1 (fr) | 2000-11-16 | 2003-01-17 | Snecma Moteurs | Procede et installation de grenaillage par ultrasons des alveoles annulaires d'attache d'aubes sur un rotor |
FR2816636B1 (fr) | 2000-11-16 | 2003-07-18 | Snecma Moteurs | Grenaillage des sommets des aubes refroidies |
FR2816538B1 (fr) | 2000-11-16 | 2003-01-17 | Snecma Moteurs | Procede pour augmenter la duree de vie des attaches d'aubes sur un rotor |
FR2816536B1 (fr) | 2000-11-16 | 2003-01-17 | Snecma Moteurs | Procede et dispositif de grenaillage par ultrasons des alveoles "axiales" d'attache des aubes sur un rotor |
JP2005192194A (ja) * | 2003-12-05 | 2005-07-14 | Yazaki Corp | 通信装置及び通信システム |
US7399371B2 (en) * | 2004-04-16 | 2008-07-15 | Nippon Steel Corporation | Treatment method for improving fatigue life and long-life metal material treated by using same treatment |
US7301123B2 (en) | 2004-04-29 | 2007-11-27 | U.I.T., L.L.C. | Method for modifying or producing materials and joints with specific properties by generating and applying adaptive impulses a normalizing energy thereof and pauses therebetween |
DE102004029546A1 (de) * | 2004-06-19 | 2006-01-05 | Mtu Aero Engines Gmbh | Verfahren und Vorrichtung zum Oberflächenstrahlen von Gasturbinenschaufeln im Bereich ihrer Schaufelfüße |
US20060021410A1 (en) | 2004-07-30 | 2006-02-02 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Shot, devices, and installations for ultrasonic peening, and parts treated thereby |
DE102004037954A1 (de) * | 2004-08-05 | 2006-03-16 | Mtu Aero Engines Gmbh | Vorrichtung zum Oberflächenstrahlen von Bauteilen |
DE102004059592B4 (de) | 2004-12-10 | 2014-09-04 | MTU Aero Engines AG | Verfahren zum Oberflächenstrahlen von Hohlräumen, insbesondere von Hohlräumen an Gasturbinen |
CN101175606B (zh) * | 2005-05-12 | 2012-04-18 | 通用电气公司 | 超声波喷丸处理***及方法 |
US7276824B2 (en) * | 2005-08-19 | 2007-10-02 | U.I.T., L.L.C. | Oscillating system and tool for ultrasonic impact treatment |
US20070068605A1 (en) * | 2005-09-23 | 2007-03-29 | U.I.T., Llc | Method of metal performance improvement and protection against degradation and suppression thereof by ultrasonic impact |
DE102005054866A1 (de) † | 2005-11-17 | 2007-05-31 | Mtu Aero Engines Gmbh | Verfahren zum Herstellen von metallischen Bauteilen, insbesondere für Turbomaschinen, mit kleinen Kantenradien |
US20070244595A1 (en) * | 2006-04-18 | 2007-10-18 | U.I.T., Llc | Method and means for ultrasonic impact machining of surfaces of machine components |
DE102006036519A1 (de) * | 2006-08-04 | 2008-02-07 | Mtu Aero Engines Gmbh | Deckelelement für eine Sonotrode und Strahlkammeranordnung zum Oberflächenstrahlen von Bauteilen |
FR2907360B1 (fr) * | 2006-10-20 | 2009-05-22 | Sonats Soc Des Nouvelles Appli | Procedes et installations de grenailles. |
US7665338B2 (en) * | 2006-10-20 | 2010-02-23 | Sonats-Societe Des Nouvelles Applications Des Techniques De Surfaces | Shot peening methods and units |
DE102007009470A1 (de) * | 2007-02-27 | 2008-08-28 | Daimler Ag | Verfahren und Vorrichtung zum Oberflächenstrahlen |
US20090095043A1 (en) * | 2007-10-11 | 2009-04-16 | Bunting Billie W | Conformable tooling for localized shot peening |
FR2930184B1 (fr) * | 2008-04-18 | 2010-12-31 | Snecma | Procede de grenaillage par ultrason de pieces de turbomachines. |
JP5912916B2 (ja) * | 2012-06-27 | 2016-04-27 | 日立Geニュークリア・エナジー株式会社 | ショットピーニング方法 |
WO2019097275A1 (fr) * | 2017-11-15 | 2019-05-23 | Arcelormittal | Procédé de traitement d'une piece de coupe et équipement associé |
CN113084714A (zh) * | 2021-04-21 | 2021-07-09 | 中国科学院宁波材料技术与工程研究所 | 一种空化喷丸装置 |
CN114941066B (zh) * | 2022-05-27 | 2023-06-02 | 南京航空航天大学 | 一种液氮冷却的超声喷丸加工装置及方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1435627A1 (ru) * | 1987-04-06 | 1988-11-07 | Кузнецкий металлургический комбинат им.В.И.Ленина | Способ упрочнени стальных изделий |
DE4041103A1 (de) * | 1990-12-21 | 1992-07-02 | Mtu Muenchen Gmbh | Verfahren zur oberflaechenbehandlung von bauteilen |
FR2689431B1 (fr) * | 1992-04-06 | 1995-10-20 | Teknoson | Procede et dispositif notamment de durcissement par ultrasons de pieces metalliques. |
FR2715884B1 (fr) * | 1994-02-04 | 1996-04-12 | Gec Alsthom Electromec | Procédé et dispositif pour le traitement de surface et la mise en précontrainte de la paroi intérieure d'une cavité. |
FR2743742B1 (fr) * | 1996-01-24 | 1998-04-03 | Seb Sa | Procede de traitement d'une surface metallique et de fabrication d'un article culinaire |
RU2130085C1 (ru) * | 1997-05-29 | 1999-05-10 | Казаков Владимир Михайлович | Способ поверхностного упрочнения деталей |
-
1999
- 1999-11-18 FR FR9914481A patent/FR2801322B1/fr not_active Expired - Fee Related
-
2000
- 2000-11-16 WO PCT/FR2000/003182 patent/WO2001036692A1/fr unknown
- 2000-11-16 DE DE60017681T patent/DE60017681T2/de not_active Expired - Lifetime
- 2000-11-16 RU RU2001123241/02A patent/RU2210602C2/ru active
- 2000-11-16 EP EP00403183A patent/EP1101827B1/fr not_active Expired - Lifetime
- 2000-11-16 ES ES00403183T patent/ES2233310T3/es not_active Expired - Lifetime
- 2000-11-16 CA CA002325897A patent/CA2325897C/fr not_active Expired - Lifetime
- 2000-11-16 UA UA2001085828A patent/UA66403C2/uk unknown
- 2000-11-17 US US09/714,223 patent/US6289705B1/en not_active Expired - Lifetime
- 2000-11-17 JP JP2000351647A patent/JP4267199B2/ja not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
Metals Handbook, Vol. 5, Surface cleaning, Finishing and Coating, 9ième édition, 1982, pages 138-140 * |
Also Published As
Publication number | Publication date |
---|---|
DE60017681D1 (de) | 2005-03-03 |
JP2001170866A (ja) | 2001-06-26 |
CA2325897C (fr) | 2007-09-18 |
WO2001036692A1 (fr) | 2001-05-25 |
FR2801322A1 (fr) | 2001-05-25 |
EP1101827A1 (fr) | 2001-05-23 |
US6289705B1 (en) | 2001-09-18 |
DE60017681T2 (de) | 2005-12-22 |
UA66403C2 (uk) | 2004-05-17 |
ES2233310T3 (es) | 2005-06-16 |
RU2210602C2 (ru) | 2003-08-20 |
CA2325897A1 (fr) | 2001-05-18 |
FR2801322B1 (fr) | 2002-02-08 |
JP4267199B2 (ja) | 2009-05-27 |
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