WO2018215179A1 - Procédé pour le post-usinage d'un canal dans une pièce - Google Patents

Procédé pour le post-usinage d'un canal dans une pièce Download PDF

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Publication number
WO2018215179A1
WO2018215179A1 PCT/EP2018/061244 EP2018061244W WO2018215179A1 WO 2018215179 A1 WO2018215179 A1 WO 2018215179A1 EP 2018061244 W EP2018061244 W EP 2018061244W WO 2018215179 A1 WO2018215179 A1 WO 2018215179A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
workpiece
curved
workpiece parts
tool electrode
Prior art date
Application number
PCT/EP2018/061244
Other languages
German (de)
English (en)
Inventor
Daniel Frey
Franz Sebastian KRUEGER
Original Assignee
Robert Bosch 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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2018215179A1 publication Critical patent/WO2018215179A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • B23H9/02—Trimming or deburring
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
    • 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
    • F01D9/00—Stators
    • F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
    • F01D9/026—Scrolls for radial machines or engines
    • 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
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • 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
    • F05D2230/10—Manufacture by removing material
    • F05D2230/11—Manufacture by removing material by electrochemical methods
    • 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
    • F05D2230/10—Manufacture by removing material
    • F05D2230/12—Manufacture by removing material by spark erosion methods

Definitions

  • the invention relates to a method for reworking a channel in a workpiece and a flow component with a curved channel according to the preamble of the independent claims.
  • the subject matter of the present invention is also a computer program and a storage medium.
  • the individual housing parts In the case of multipart spiral housings, the individual housing parts must be individually reworked due to the complex flow or channel geometry, so that after the assembly of the housing parts, the channel to the
  • EP 2 095 894 A1 discloses a process for producing a
  • Turbine wheel blade with straight outlet channels for a cooling medium wherein the introduction of the exhaust ducts eroding methods such.
  • ECM electrochemical erosion
  • EDM spark erosion
  • Impeller disc revealed. These cooling air ducts are produced by
  • Metal component having a generated by a material-removing and / or a material-forming machining generated three-dimensional shape a processing of one or more excellent component sections by electrochemical machining by means of a nozzle-like cathode via which an electrolyte is discharged into the work area, wherein the cathode or the metal component is moved by means of a manipulator element freely in space.
  • the present invention is a method for reworking a channel in a workpiece, wherein the channel is a curved
  • the subject matter of the present invention is furthermore a flow component, in particular a spiral casing, with a channel for guiding a fluid flow, wherein the channel is formed by at least one first housing part of the flow component and a second housing part of the flow component and a curved one Channel centerline, wherein the channel further at least one
  • Transition region is continuously formed from the first housing part to the second housing part due to a post-processing of the channel by means of an erosive method.
  • the subject of the present invention is also a computer program which is adapted to the o.g. Execute method, and a machine-readable storage medium on which the computer program is stored.
  • the workpiece may be formed as a flow component, in particular as a spiral housing, for guiding a fluid flow.
  • the spiral housing can for
  • the volute may be part of a turbo compressor stage.
  • the at least two workpiece parts or the two housing parts can be any one workpiece parts or the two housing parts.
  • the at least two workpiece parts or the two housing parts may also be formed metallic or from a
  • the metal may be selected from the group consisting of: iron, aluminum, copper and alloys thereof.
  • the at least two workpiece parts are arranged to one another or
  • the channel is formed with the curved channel center axis. That is, in other words, the at least two
  • the at least two workpiece parts can already by a
  • the at least two workpiece parts can, for example, be arranged or assembled adjacent to each other in the step of arranging, in order to form the channel with the curved channel center axis.
  • the central axis of the channel can essentially be understood as the connecting line of the center points of the channel cross sections of the channel.
  • the central channel axis is curved.
  • the channel central axis of the channel or the connecting line of the centers of the channel cross-sections has at least one portion which has a curvature.
  • a major part of the central channel axis or the entire central channel axis is curved.
  • the channel central axis of the channel may be arcuate, helical or spiral.
  • the channel central axis preferably runs along a flow direction of a fluid stream flowing during operation or use.
  • the channel can be elongated. That is, in other words, that the channel may have a greater extent along the channel center axis than transverse to the channel center axis.
  • the channel may have varying channel cross sections in the direction of the channel center axis.
  • the surface of the channel cross-sections of the channel can steadily increase in the direction of the central axis of the channel or steadily reduce.
  • the channel cross sections may in this case be substantially rounded, circular or oval.
  • the channel is preferably formed closed in the circumferential direction. The channel can be used to guide a
  • Fluid flow may be formed.
  • Postprocessing can be a
  • the reworking can take place, in particular, on at least one transition region from the first workpiece to the second workpiece.
  • the reworking preferably takes place in the channel at all transitional areas from the first workpiece to the second workpiece.
  • a transition region can be understood as meaning the region of a separation point between the assembled workpiece parts or housing parts.
  • a transition region can be understood as meaning the region of a channel inner surface which has a transition from the first workpiece to the second workpiece or from the first housing part to the second housing part.
  • the transition regions may have multiple, non-contiguous subsections.
  • the transition areas may include paragraphs, steps, and / or edges prior to the post-processing step.
  • continuous can be understood as meaningless, stepless, edgeless and / or continuous.
  • a removal process can be understood as meaning a process in which at least one chemical and / or thermal removal takes place.
  • layers of material in the channel are chemically and / or thermally removed in the channel.
  • edges and paragraphs which arise in a channel at the separation points or transition areas between the assembled workpiece parts or housing parts and have a negative effect on the flow or the efficiency in operation, subsequently remove and Thus, to ensure a continuous course of the channel inner surface, in particular at the transition areas of the.
  • common post-processing of the workpiece parts or the channel inner surface takes place according to the invention common post-processing of the workpiece parts or the channel inner surface by means of an erosive method.
  • the workpiece parts can first be produced or preprocessed individually by a favorable method, without having to pay attention to a high surface quality, since post-processing of the channel or the channel inner surface takes place after assembly.
  • the reworking step can be repeated several times using the same ablation method. However, the reworking step can also be repeated several times using different removal methods. As a result of this measure, the dimensional accuracy and surface quality can be configured or adapted as required and correspondingly further increased.
  • an active medium may be selected from the group consisting of: electrolyte, etching medium, dielectric.
  • an active medium can be understood as meaning a medium, in particular a liquid or solution, which is an ablation or the step of ablation alone or in the
  • the removal in the channel or on the channel inner surface can be carried out inexpensively and thus a high surface quality can be achieved. It is also advantageous if the channel is flowed through by the active medium in the direction of the central axis of the channel, in particular from a channel inlet to a channel outlet which is different from the channel inlet. That is to say, in other words, that the passage is flowed through by the active medium, as in operation of the flowing fluid flow. Accordingly, the equivalent
  • Flow direction of the active medium of the flow direction of a flowing during operation fluid flow By this measure, a flow-optimal geometry or surface can be generated in the channel.
  • the erosive method is selected from the group consisting of: electrochemical method, in particular electrochemical erosion or metal etching, chemical method, in particular etching, thermal method, in particular spark erosion, or combinations thereof.
  • electrochemical method in particular electrochemical erosion or metal etching
  • chemical method in particular etching
  • thermal method in particular spark erosion, or combinations thereof.
  • a plurality of identical or also different ablation methods can be executed.
  • the two parts of the workpiece are disassembled and reassembled to change, for example, a tool electrode.
  • the removal in the channel or on the channel inner surface can be carried out inexpensively and the surface quality can be further increased.
  • the erosion method is an ECM method, wherein prior to the step of arranging the at least two workpiece parts, a step of inserting a curved tool electrode into one
  • Tool electrode is performed from the channel section.
  • the curved tool electrode in this case has a shape corresponding to the curved channel section or to the curved channel.
  • the erosion method is an ECM method, wherein after the step of arranging the at least two workpiece parts, a step of inserting a curved variable geometry tool electrode into the channel and after the step of reworking the channel a removal step the curved variable geometry tool electrode is carried out of the channel.
  • the curved variable geometry tool electrode is configured to vary or change its geometry, for example, by fanning. In this case, it is particularly advantageous if the steps of inserting the curved tool electrode, arranging the at least two workpiece parts, reworking the channel and removing the curved tool electrode are repeated at least once, wherein in the step of insertion different curved
  • Tool electrodes in particular curved tool electrodes are used with different geometry or different cross-section or the geometry of the curved tool electrode is varied with variable geometry.
  • the ECM process is an electrochemical removal with external voltage source and stands for electrochemical machining. By means of ECM machining can be a very good surface finish and
  • Arranging the two workpiece parts is formed - in a channel section used a workpiece part and after processing again
  • inaccessible undercuts in the channel can be machined by means of a variable geometry tool electrode so that the electrode, after assembly of the two
  • the geometry of the channel can be influenced.
  • planar surfaces can be formed curved from the pre-machining in order to produce a streamlined geometry.
  • the target geometry can be optimized in advance by iterations of ECM removal simulations and flow simulations.
  • the at least two workpiece parts or housing parts can be releasably connected to each other.
  • the detachably connecting step may be performed after the step of arranging the at least two workpiece parts and before the step of post-processing the channel.
  • the releasably connecting step may also be done after the post-processing step of the channel.
  • a releasable connection can be understood as meaning a connection which can be released without destroying the at least two workpiece parts or housing parts.
  • a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory and for carrying out, implementing and / or controlling the steps of the method according to one of the embodiments described above is used, especially when the program product or program is executed on a computer or a device.
  • the inventive method can, for example, in software or hardware or in a hybrid of software and hardware, for example in a
  • Fig. 1 a designed as a spiral housing according to the invention
  • Fig. 2a-c is a sequential representation of the sequence of several steps of the post-processing of the channel of the flow member of Fig. 1;
  • FIG. 3 is a flowchart of a method according to a
  • a flow component according to the invention is provided in its entirety by the reference numeral 10.
  • the flow component 10 is formed as a spiral housing 10.
  • Flow member 10 and the spiral housing 10 has a first housing part 12 and second housing part 14.
  • the first housing part 12 has a first channel section 16.
  • the second housing part 14 has a second
  • Channel cuts 16, 18 together form a channel 20.
  • Housing parts 12, 14 are formed metallic.
  • the channel 20 is designed to guide a fluid flow, in particular during operation or use of the flow component 10.
  • the channel 20 has a curved channel central axis 22.
  • the channel 20 or the channel central axis 22 extends from a channel inlet 24 to a channel outlet 26.
  • the channel 20 has rounded channel cross sections.
  • the channel 20 further includes along the channel centerline 22 - from the channel inlet 24 to the
  • the channel 20 has at a channel inner surface 28 transition regions 30 from the first housing part 12 to the second
  • Transition regions 30 formed continuously.
  • the transition region 30 is formed free of steps, steps and / or edges and thus without any chamfer or edges.
  • Fig. 2a-c the sequence of several steps of the post-processing of the channel 20 of the flow member 10 of Fig. 1 is shown in sequence.
  • an ECM method is selected as the ablative method, wherein any electrochemical, chemical and thermal methods and combinations thereof are conceivable within the scope of the invention.
  • FIGS. 2 a - c show a section of the flow component 10 or spiral casing 10 from FIG. 1.
  • the spiral casing 10 is not yet completely finished and thus formed as a workpiece 10. Accordingly, the first housing part 12 as the first workpiece part 12 and the second housing part 14 as the second workpiece part 14 are formed. As a result, the first workpiece part 12 has the first channel section 16 and the second workpiece part 14 has the second channel section 18.
  • both housing parts 12, 14 must be metallic.
  • Fig. 2a shows a state before the first post-processing. Accordingly, prior to the first post-processing, a curved tool electrode 32 has been inserted into the first channel section 16 of the first workpiece part 12.
  • Tool electrode 32 is disposed in the channel 20.
  • an external voltage source is applied to the two workpiece parts 12, 14 as the anode (+) and the tool electrode 32 as the cathode (-).
  • an active medium which is an electrolyte (for example, aqueous sodium nitrate or
  • Sodium chloride electrolyte solution is delivered to the channel 20.
  • the active medium or the electrolyte then flows through the channel 20 between the channel inner surface 28 and the tool electrode 32 along the
  • Channel centerline 22 from the channel inlet 24 to the channel outlet 26 and transports the resulting Abtrag area out of the channel 20 out.
  • anodic metal dissolution occurs at the channel inner surface 28, the anode, i. the two workpiece parts 12, 14 emit electrons, thereby forming metal ions, which pass into the electrolyte or the electrolyte solution.
  • Hydroxide ions that form at the cathode (-) arise as a solid and can be mechanically separated from the electrolyte.
  • Other metals such as copper remain in solution and initially remain in solution.
  • Transition regions 30 with a high surface quality and dimensional accuracy, so that the channel 20 has a flow-optimized design.
  • the two workpiece parts 12, 14 are disassembled so that the curved tool electrode 32 can be removed from the first channel portion 16. Provided that achieved by the post
  • Form flow component 10 In the embodiment shown, however, another two reworks follow analogously to the post-processing explained above. In detail, the above-mentioned steps from FIG. 2a are respectively shown in FIGS. 2b and 2c
  • the cross section takes in the embodiment shown by the first post-processing of FIG.
  • Shape accuracy and surface quality of the channel 20 and the channel inner surface 28 further configured or adapted depending on the requirements and increased accordingly.
  • FIG. 3 shows a flow chart of an embodiment of a method 100 according to the invention for reworking a channel 20 in a workpiece 10, wherein the channel 20 has a curved channel central axis 22 and is formed by at least two workpiece parts 12, 14 of the workpiece 10.
  • the method 100 comprises a step 102 of arranging the at least two workpiece parts 12, 14 relative to one another so that the channel 20 is formed with the curved channel central axis 22.
  • the method 100 further includes a step 104 of
  • the method 100 includes a step 106 of inserting a curved one
  • the method 100 may also optionally include a step 110 of the releasable
  • Connecting the at least two workpiece parts 12, 14 include. If an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

Procédé pour le post-usinage d'un canal (20) dans un pièce (10), le canal (20) présentant un axe central de canal courbé (22) et étant formé par au moins deux parties de pièce (12, 14) de la pièce (10), comprenant les étapes de : - disposition des au moins deux parties de pièce (12, 14) l'une par rapport à l'autre de telle sorte que le canal (20) est formé avec l'axe central de canal courbé (22), et - post-usinage du canal (20) au moyen d'un procédé d'enlèvement.
PCT/EP2018/061244 2017-05-24 2018-05-03 Procédé pour le post-usinage d'un canal dans une pièce WO2018215179A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017208783.8 2017-05-24
DE102017208783.8A DE102017208783A1 (de) 2017-05-24 2017-05-24 Verfahren zum Nachbearbeiten eines Kanals in einem Werkstück

Publications (1)

Publication Number Publication Date
WO2018215179A1 true WO2018215179A1 (fr) 2018-11-29

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ID=62116424

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Application Number Title Priority Date Filing Date
PCT/EP2018/061244 WO2018215179A1 (fr) 2017-05-24 2018-05-03 Procédé pour le post-usinage d'un canal dans une pièce

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DE (1) DE102017208783A1 (fr)
WO (1) WO2018215179A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202106007D0 (en) * 2021-04-27 2021-06-09 Cummins Ltd Method and electrode
GB202106010D0 (en) * 2021-04-27 2021-06-09 Cummins Ltd Electrode assembly and method
GB202206140D0 (en) * 2022-04-27 2022-06-08 Cummins Ltd Electrochemical machining developments

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197361A (en) * 1991-10-11 1993-03-30 General Electric Company Surface contouring tool
US5320505A (en) * 1993-03-04 1994-06-14 Tecumseh Products Company Electrochemical machining of scroll wraps
DE4428207A1 (de) 1994-08-09 1996-02-15 Bmw Rolls Royce Gmbh Turbinen-Laufradscheibe mit gekrümmtem Kühlluftkanal sowie Herstellverfahren hierfür
EP2095894A1 (fr) 2008-02-27 2009-09-02 Siemens Aktiengesellschaft Procédé destiné à la fabrication d'une aube de turbine refroidie à l'intérieur
US20100178518A1 (en) * 2007-07-24 2010-07-15 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Method for Manufacturing a Machine Housing Having a Surface-Hardened Fluid Chamber
DE102010020227A1 (de) * 2010-05-11 2011-11-17 Ks Kolbenschmidt Gmbh Verfahren zur Erzeugung einer beliebig gestalteten Geometrie an Kolben von Brennkraftmaschinen
DE102010032701A1 (de) 2010-07-29 2012-02-02 Leistritz Turbomaschinen Technik Gmbh Verfahren zur Herstellung eines Metallbauteils
US20120156023A1 (en) * 2009-07-31 2012-06-21 Man Diesel & Turbo Se Radial Compressor And Method For Producing A Radial Compressor
WO2016064463A1 (fr) * 2014-10-24 2016-04-28 Siemens Aktiengesellschaft Usinage électrochimique de contours internes de composants de turbine à gaz

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5197361A (en) * 1991-10-11 1993-03-30 General Electric Company Surface contouring tool
US5320505A (en) * 1993-03-04 1994-06-14 Tecumseh Products Company Electrochemical machining of scroll wraps
DE4428207A1 (de) 1994-08-09 1996-02-15 Bmw Rolls Royce Gmbh Turbinen-Laufradscheibe mit gekrümmtem Kühlluftkanal sowie Herstellverfahren hierfür
US20100178518A1 (en) * 2007-07-24 2010-07-15 Brinkmann Pumpen K.H. Brinkmann Gmbh & Co. Kg Method for Manufacturing a Machine Housing Having a Surface-Hardened Fluid Chamber
EP2095894A1 (fr) 2008-02-27 2009-09-02 Siemens Aktiengesellschaft Procédé destiné à la fabrication d'une aube de turbine refroidie à l'intérieur
US20120156023A1 (en) * 2009-07-31 2012-06-21 Man Diesel & Turbo Se Radial Compressor And Method For Producing A Radial Compressor
DE102010020227A1 (de) * 2010-05-11 2011-11-17 Ks Kolbenschmidt Gmbh Verfahren zur Erzeugung einer beliebig gestalteten Geometrie an Kolben von Brennkraftmaschinen
DE102010032701A1 (de) 2010-07-29 2012-02-02 Leistritz Turbomaschinen Technik Gmbh Verfahren zur Herstellung eines Metallbauteils
WO2016064463A1 (fr) * 2014-10-24 2016-04-28 Siemens Aktiengesellschaft Usinage électrochimique de contours internes de composants de turbine à gaz

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