[go: up one dir, main page]

WO2009100745A1 - Procédé de fabrication d'un élément pour machine thermique - Google Patents

Procédé de fabrication d'un élément pour machine thermique Download PDF

Info

Publication number
WO2009100745A1
WO2009100745A1 PCT/EP2008/009784 EP2008009784W WO2009100745A1 WO 2009100745 A1 WO2009100745 A1 WO 2009100745A1 EP 2008009784 W EP2008009784 W EP 2008009784W WO 2009100745 A1 WO2009100745 A1 WO 2009100745A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
polishing
erosion
producing
blank
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/EP2008/009784
Other languages
German (de)
English (en)
Inventor
Alexander Eitel
Daniel Henseler
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.)
Everllence SE
Original Assignee
MAN Turbo AG
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 MAN Turbo AG filed Critical MAN Turbo AG
Priority to CN2008801268053A priority Critical patent/CN101970165A/zh
Priority to JP2010546220A priority patent/JP2011511716A/ja
Priority to EP08872454A priority patent/EP2240290A1/fr
Publication of WO2009100745A1 publication Critical patent/WO2009100745A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B23H5/00—Combined machining
    • B23H5/02—Electrical discharge machining combined with electrochemical machining
    • 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
    • B23H5/00—Combined machining
    • B23H5/04—Electrical discharge machining combined with mechanical working
    • 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
    • B23H5/00—Combined machining
    • B23H5/06—Electrochemical machining combined with mechanical working, e.g. grinding or honing
    • 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
    • B23H5/00—Combined machining
    • B23H5/14—Supply or regeneration of working media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece

Definitions

  • the invention relates to a method for producing a component for a thermal machine, in particular for producing a component for a turbine, a compressor or an expander, in which a blank of the component processed by eroding at least in sections and the surface produced by erosion by superfinishing is processed further. Furthermore, the invention relates to a component for a thermal machine, which is produced by means of the inventive method.
  • Thermal machines such as turbines, compressors or expander
  • components some of which have very complex shapes, such as turbine blades.
  • erosion is increasingly used, a thermal, erosive manufacturing process for conductive components, in which material is removed by electrical discharge processes between an electrode and the component.
  • complex recesses can be formed by eroding, for example specially shaped grooves, pockets with complex cross-sectional shapes or the like.
  • a disadvantage of the use of erosion is that the eroded surface portions, ie the surface portions at which the spark discharge took place, are covered with fine craters and the surfaces show a pitted structure. Furthermore, in peripheral zones of the component, discharge processes, which are often associated with very high temperatures, lead to microstructural changes in the near-surface layer, whereby this near-surface layer is frequently interspersed with microcracks.
  • This layer is also referred to as “recast layer” (also called recast layer) or “white layer”, wherein the thickness and nature of the recast layer, among other things, the setting parameters, the combination of tools and components, the desired surface roughness and Machine depends.
  • the recast layer on the one hand no longer corresponds to the metallurgical structure of the base material used and thus has deviating properties, it is not desirable in particular in the manufacture of components for thermal machines.
  • the recast layer has a comparatively high average roughness Ra in accordance with DIN EN ISO 3274 or DIN EN ISO 4287. This can be in a range of 3 to 4 microns, which is also undesirable for certain applications of components for thermal machines. For this reason, with thermal engine components, the recast layer has hitherto been removed by manual grinding processes.
  • the object of the invention is to provide a method for producing components for thermal machines, with which components of complex shapes with high quality, in particular with high repeatability and surface quality, can be manufactured.
  • this object is achieved by a method having the features according to claim 1 and, in particular, by the fact that fine machining or after a preceding superfinishing of the eroded surfaces is followed by sliding machining and / or electropolishing.
  • electropolishing is also proposed for removing the recast layers.
  • the recast layer can be completely removed by suitable selection of the electrolyte as well as by selective adjustment of the processing time, the current density and the electrolyte temperature, which can also be processed for the grinding inaccessible surface sections.
  • targeted desired average roughness can be generated on the surface to be polished.
  • the blank is produced for example by conventional methods, in particular by primary or forming such as casting, forging or the like and / or, in particular from forging or round material, prepared by machining processes for the inventive method.
  • the erosion of the surfaces preferably takes place in several stages.
  • the material removal is reduced on the one hand by the multi-stage erosion, on the other hand the influence on the structure of further internal layers is reduced. At the same time, this results in a low average roughness than in a single erosion with a larger material removal, which is advantageous for the subsequent superfinishing steps.
  • the eroded body is placed together with grinding wheels and - preferably - a liquid, in particular water, in a working container, which oscillating for Gleitspanen and / or rotating movement performs.
  • the abrasive particles are guided past the surfaces to be treated, wherein the removal of material takes place.
  • ceramic abrasives are used as the abrasive body, which are mixed with appropriate abrasives.
  • additives are preferably added to the liquid.
  • additives can be added to the additives, which also promote the corrosion protection of the components and / or at the same time have a degreasing effect. If a pickling effect is to be achieved, it is also possible to add acidic additives. In the case of flat components, it is also possible to add mechanical release agents (for example small plastic beads) which prevent the components from adhering to one another.
  • the removal of the recast layer during slip cutting can be additionally increased by the addition of chemicals to produce oxalate and phosphate compounds on the eroded surfaces.
  • oxalate and phosphate coatings are produced in particular at the roughness peaks, which have a significantly lower hardness compared to the abrasives.
  • the material removal during sliding machining can be further increased, while at the same time the average roughness can be further reduced.
  • an additional polishing step can follow the sliding chip. If sliding lubrication is assisted by the addition of chemicals for the production of oxalate and phosphate compounds, the polishing can also take place immediately afterwards in the same working container, with the appropriate choice of polishing liquid.
  • a polishing liquid is preferably added to the working container, which neutralizes the chemicals causing the production of oxalate and phosphate compounds and is inert to the material of the component.
  • a polishing liquid for example, a mixture of phosphate salts and Gleitffentensi- is the.
  • the eroded body is placed, at least with portions of its eroded surfaces, in an electrolyte bath of a material-specific electrode. submerged and switched as an anode. Subsequently, the workpiece is subjected to either constant or pulsed direct current. In particular, the use of pulsed current ensures that the recast layer dissolves particularly well from the eroded surface sections.
  • the electropolishing can also be referred to simply as reverse plating.
  • the material removal and the roughness of the surface can be set by specifying a defined processing time, a certain current density or by specifying a specific electrolyte temperature.
  • the electrolyte used is preferably a mixture of water and inorganic acids. Depending on the material of the component, however, it is also possible to use other inorganic acids as the electrolyte, for example a mixture of phosphoric acid and sulfuric acid. The addition of alcohols is possible.
  • slip chipping and electropolishing can be stated in different orders, for example, first sliding glazings with subsequent electropolishing or vice versa.
  • the sliding machining and / or electropolishing can also take place in several stages, optionally alternately.
  • the component After machining the eroded and treated by Gleitspanen and / or electropolishing surfaces, the component can be subjected to further processing steps, such as machining steps or steps for material or material hardening.
  • the inventive method makes it possible for the first time to manufacture components for thermal machines with high repeatability and precision using erosion.
  • the invention relates to a component for a thermal machine, which is produced by means of the method according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un élément pour machine thermique, notamment un élément de turbine, de compresseur ou de détendeur, procédé selon lequel une ébauche de l'élément est au moins partiellement usinée par électroérosion et la surface ainsi générée par électroérosion est affinée par polissage au tonneau et/ou électropolissage de manière à totalement éliminer au moins des parties de la couche blanche obtenue par électroérosion. L'invention porte également sur un élément pour machine thermique fabriqué selon ledit procédé.
PCT/EP2008/009784 2008-02-13 2008-11-19 Procédé de fabrication d'un élément pour machine thermique Ceased WO2009100745A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2008801268053A CN101970165A (zh) 2008-02-13 2008-11-19 热机部件的制作方法
JP2010546220A JP2011511716A (ja) 2008-02-13 2008-11-19 熱機関のための構成部品を製造する方法
EP08872454A EP2240290A1 (fr) 2008-02-13 2008-11-19 Procédé de fabrication d'un élément pour machine thermique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008008894.3 2008-02-13
DE200810008894 DE102008008894A1 (de) 2008-02-13 2008-02-13 Verfahren zur Herstellung eines Bauteiles für eine thermische Maschine

Publications (1)

Publication Number Publication Date
WO2009100745A1 true WO2009100745A1 (fr) 2009-08-20

Family

ID=40364332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/009784 Ceased WO2009100745A1 (fr) 2008-02-13 2008-11-19 Procédé de fabrication d'un élément pour machine thermique

Country Status (5)

Country Link
EP (1) EP2240290A1 (fr)
JP (1) JP2011511716A (fr)
CN (1) CN101970165A (fr)
DE (1) DE102008008894A1 (fr)
WO (1) WO2009100745A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009012612A1 (de) * 2009-03-11 2010-09-16 Mtu Aero Engines Gmbh Verfahren und Vorrichtung zum Herstellen eines metallischen Bauteils für eine Strömungsmaschine
JP5787638B2 (ja) * 2011-06-24 2015-09-30 三菱重工業株式会社 インペラの加工方法
DE102015209745B4 (de) * 2015-05-28 2018-12-20 MTU Aero Engines AG Verfahren zur Herstellung einer Tl-Blisk
CN107214567B (zh) * 2017-07-06 2019-02-01 海宁红狮宝盛科技有限公司 钛合金激光切割重铸层去除工艺
DE102018218393A1 (de) * 2018-10-26 2020-04-30 Aesculap Ag Verfahren zum Oberflächenbehandeln eines Metall- oder Legierungsprodukts sowie ein Metall- oder Legierungsprodukt
DE102020129779B4 (de) 2020-11-11 2025-03-27 Bolz Intec Gmbh Verfahren zur Oberflächenbehandlung einer inneren Oberfläche eines Behälters

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357905A (en) * 1960-03-28 1967-12-12 Cleveland Twist Drill Co Electrolyte composition and method of electrolytically removing stock from workpiece
US3753880A (en) * 1970-08-14 1973-08-21 Alusuisse Method of producing a tool for the non-cutting working of materials
JPS57211425A (en) * 1981-06-24 1982-12-25 Toshiba Corp Machining process in association of discharge machining with abrasive grain flow machining
JPS6138821A (ja) * 1984-07-31 1986-02-24 Mitsubishi Heavy Ind Ltd 放電加工変質層の除去方法
US6331217B1 (en) * 1997-10-27 2001-12-18 Siemens Westinghouse Power Corporation Turbine blades made from multiple single crystal cast superalloy segments
DE102005060698A1 (de) * 2005-12-19 2007-08-02 Rolls-Royce Deutschland Ltd & Co Kg Sekundärfluidkanalherstellungsverfahren
WO2008049393A1 (fr) * 2006-10-26 2008-05-02 Mtu Aero Engines Gmbh Procédé de fabrication d'une aube de turbine de construction légère

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6800951U (de) * 1968-10-02 1971-09-23 Aeg Kanis Turbinen Laeufer einer axialstroemungsmaschine.
DE60009298T2 (de) * 2000-10-12 2004-08-05 HMY, Ltd., Yasugi Herstellungsverfahren von Schaufeln für Abgasturboladerturbinen von Fahrzeugen und Schaufel
US6817051B2 (en) * 2002-08-27 2004-11-16 Sulzer Metco Ag Guide apparatus for a workpiece having a porous surface coating and a method for the polishing of such a workpiece
DE10335408A1 (de) * 2003-08-01 2005-02-24 Mtu Aero Engines Gmbh Verfahren zum Erodieren von mindestens einer Bohrung in ein Bauteil mit mindestens einer Kavität
DE102004025321A1 (de) * 2004-05-19 2005-12-08 Alstom Technology Ltd Strömungsmaschinenschaufel
DE102005032738B3 (de) * 2005-07-08 2006-11-23 Siemens Ag Verfahren und Vorrichtung zum Bearbeiten wenigstens zweier Werkstücke mittels elektrochemischer Behandlung
DE102005054866A1 (de) * 2005-11-17 2007-05-31 Mtu Aero Engines Gmbh Verfahren zum Herstellen von metallischen Bauteilen, insbesondere für Turbomaschinen, mit kleinen Kantenradien
WO2007134620A1 (fr) * 2006-05-19 2007-11-29 Siemens Aktiengesellschaft Procédé pour préparer un élément constitué d'un matériau de base électroconducteur à l'exécution d'un processus d'érosion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3357905A (en) * 1960-03-28 1967-12-12 Cleveland Twist Drill Co Electrolyte composition and method of electrolytically removing stock from workpiece
US3753880A (en) * 1970-08-14 1973-08-21 Alusuisse Method of producing a tool for the non-cutting working of materials
JPS57211425A (en) * 1981-06-24 1982-12-25 Toshiba Corp Machining process in association of discharge machining with abrasive grain flow machining
JPS6138821A (ja) * 1984-07-31 1986-02-24 Mitsubishi Heavy Ind Ltd 放電加工変質層の除去方法
US6331217B1 (en) * 1997-10-27 2001-12-18 Siemens Westinghouse Power Corporation Turbine blades made from multiple single crystal cast superalloy segments
DE102005060698A1 (de) * 2005-12-19 2007-08-02 Rolls-Royce Deutschland Ltd & Co Kg Sekundärfluidkanalherstellungsverfahren
WO2008049393A1 (fr) * 2006-10-26 2008-05-02 Mtu Aero Engines Gmbh Procédé de fabrication d'une aube de turbine de construction légère

Also Published As

Publication number Publication date
EP2240290A1 (fr) 2010-10-20
JP2011511716A (ja) 2011-04-14
DE102008008894A1 (de) 2009-08-20
CN101970165A (zh) 2011-02-09

Similar Documents

Publication Publication Date Title
DE102007060085B4 (de) Verfahren zur Erzeugung von korrosionsbeständigen Oberflächen nitrierter oder nitrocarburierter Bauteile aus Stahl sowie nitrocarburierte oder nitrierte Bauteile aus Stahl mit oxidierten Oberflächen
EP2729596B1 (fr) Procédé pour réaliser un fût de cylindre et une chemise de cylindre
WO2009100745A1 (fr) Procédé de fabrication d'un élément pour machine thermique
EP2243595B1 (fr) Procédé de la production d'un corps avec une fente comme crevasse de test
DE102010037077B4 (de) Verfahren zum Konditionieren der Oberfläche gehärteter korrosionsgeschützter Bauteile aus Stahlblech
DE112017001964T5 (de) Polykristallines kubisches Bornitrid und Verfahren für dessen Herstellung
DE102009021824A1 (de) Verfahren zum Kantenentgraten und -verrunden
DE3922377C2 (de) Verfahren zum Behandeln der mechanisch oder elektrochemisch gehonten Zylinderlaufflächen von Brennkraftmaschinen
DE19607774B4 (de) Verfahren zum Honen von Innenflächen eines Zylinders und Zylinder
DE102009025621B4 (de) Verfahren zum Herstellen eines metallischen Bauteils mit einer gehärteten Oberflächenschicht sowie danach hergestelltes Bauteil
DE102017102883A1 (de) Verfahren und Werkzeug zum Entfernen einer Beschichtung von einem Substrat
WO2009074142A2 (fr) Procédé d'usinage d'un élément en métal
EP2906737B1 (fr) Procédé d'usinage superficiel de revêtements en carbone dur formés sur des substrats
DE102014220866B3 (de) Verfahren zum Herstellen von Funktionsflächen, insbesondere Verzahnungen, und nach diesem Verfahren hergestellte Funktionsflächen
DE102008015061A1 (de) Verfahren zur Oberflächenbehandlung einer Feder
DE10214374A1 (de) Verfahren zum Feinbearbeiten von zylindrischen Innenflächen
DE895554C (de) Verfahren zum Behandeln und Feinschleifen von Arbeitsflaechen
EP1138793A2 (fr) alliage d'aluminium pour la fabrication de pièces de précision par enlèvement decoupeau et pour la fabrication de couches anodisées résistantes à la corrosion
DE10333860A1 (de) Verfahren zur Mikrozerspanung von metallischen Werkstoffen
DE10135618C1 (de) Verfahren zur Herstellung von Zylinderlaufbahnen, insbesondere Al-Si-Laufbahnen mit gesteigerter Verschleißfestigkeit
DE10006052C2 (de) Körper und Verfahren zur abtragenden Oberflächenbearbeitung
DE102018102095B3 (de) Verfahren zum Herstellen von Funktionsflächen, insbesondere Verzahnungen, und nach diesem Verfahren hergestellte Funktionsflächen
WO2009056100A2 (fr) Procédé de fabrication d'une couche de protection
DE102005051147A1 (de) Verfahren zum Strukturieren von Zylinderlaufflächen von aus Gusseisen gegossenen Zylinderkurbelwellengehäusen
DE102015004812A1 (de) Verfahren zur Herstellung eines Bauteils

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200880126805.3

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08872454

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2008872454

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2010546220

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 1912/MUMNP/2010

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2010137814

Country of ref document: RU