DE4409769A1 - Impeller wheels for turbines and mfg process for same - Google Patents

Impeller wheels for turbines and mfg process for same

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Publication number
DE4409769A1
DE4409769A1 DE4409769A DE4409769A DE4409769A1 DE 4409769 A1 DE4409769 A1 DE 4409769A1 DE 4409769 A DE4409769 A DE 4409769A DE 4409769 A DE4409769 A DE 4409769A DE 4409769 A1 DE4409769 A1 DE 4409769A1
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Germany
Prior art keywords
blades
hubs
blade
metallic
heating
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.)
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Application number
DE4409769A
Other languages
German (de)
Inventor
Dieter Hagg
Lothar Reisinger
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 Motoren und Turbinen Union Muenchen GmbH
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Filing date
Publication date
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Priority to DE4409769A priority Critical patent/DE4409769A1/en
Publication of DE4409769A1 publication Critical patent/DE4409769A1/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/002Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating specially adapted for particular articles or work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or workpieces
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B37/00Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/02Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
    • C04B37/023Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used
    • C04B37/026Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles characterised by the interlayer used consisting of metals or metal salts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/30Fixing blades to rotors; Blade roots ; Blade spacers
    • F01D5/3061Fixing blades to rotors; Blade roots ; Blade spacers by welding, brazing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00Articles made by soldering, welding or cutting
    • B23K2101/001Turbines
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658Atmosphere during thermal treatment
    • C04B2235/6581Total pressure below 1 atmosphere, e.g. vacuum
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12Metallic interlayers
    • C04B2237/121Metallic interlayers based on aluminium
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12Metallic interlayers
    • C04B2237/123Metallic interlayers based on iron group metals, e.g. steel
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/12Metallic interlayers
    • C04B2237/124Metallic interlayers based on copper
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32Ceramic
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/40Metallic
    • C04B2237/405Iron metal group, e.g. Co or Ni
    • C04B2237/406Iron, e.g. steel
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/76Forming laminates or joined articles comprising at least one member in the form other than a sheet or disc, e.g. two tubes or a tube and a sheet or disc
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2237/00Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/50Processing aspects relating to ceramic laminates or to the joining of ceramic articles with other articles by heating
    • C04B2237/84Joining of a first substrate with a second substrate at least partially inside the first substrate, where the bonding area is at the inside of the first substrate, e.g. one tube inside another tube

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

Impeller wheels for turbine machines, esp. gas or steam turbines, in which blades of ceramic materials are joined integrally to discs of high temp. resistance steel alloys by heating and where intermediate layers containing aluminium (Al) or copper (Cu) or nickel (Ni) are applied to the joining surfaces on the blades or the disc by vacuum soldering, electro-plating or sintering prior to joining.A mfg. process for the above is also claimed.

Description

Die Erfindung betrifft Schaufelträger für Strömungsmaschinen gemäß dem Oberbegriff des Anspruchs 1 und Verfahren zur Herstellung von Schau­ felträgern gemäß dem Oberbegriff des Anspruchs 2.The invention relates to blade carriers for turbomachines according to the Preamble of claim 1 and method for producing a show field carriers according to the preamble of claim 2.

Die Verbindung unterschiedlicher Werkstoffe spielt in der Fertigungs­ technik eine erhebliche Rolle, da häufig innerhalb eines Teils unter­ schiedliche Eigenschaften gefordert werden, die nicht mit einem ein­ zigen Material erreicht werden können, so daß je nach Herstellung und Betriebsfunktion für einzelne Elemente eines Teiles einer Konstruktion unterschiedliche Werkstoffe eingesetzt werden, um den Anforderungen gerecht werden zu können. Zum Beispiel kann der Wirkungsgrad von Gas- oder Dampfturbinen durch hohe Betriebstemperaturen verbessert werden. Turbinen-, Lauf- und Leitschaufeln aus Keramik-Werkstoffen ver­ bessern die Temperaturfestigkeit der Beschaufelung von Gas- und Dampf­ turbinen bei höheren Betriebstemperaturen. Von den Naben derartiger Gas- und Dampfturbinen werden von der Beschaufelung unterschiedliche Eigenschaften gefordert, so daß diese vorzugsweise weiterhin aus me­ tallischen Werkstoffen gefertigt sein sollen.The connection of different materials plays in manufacturing technology plays a significant role, since often within a part under Different properties are required that are not compatible with one umpte material can be achieved, so that depending on the manufacture and Operating function for individual elements of a part of a construction different materials are used to meet the requirements to be able to do justice. For example, the efficiency of gas or steam turbines can be improved by high operating temperatures. Turbine, rotor and guide blades made of ceramic materials ver improve the temperature resistance of the blading of gas and steam turbines at higher operating temperatures. From the hubs like that Gas and steam turbines are different from the blading Properties required, so that these preferably continue from me metallic materials should be made.

Bekannt ist es aus der DE-A 36 26 009, für eine Verbindung von me­ tallischen mit nichtmetallischen Teilen, z. B. Aluminium oder Alumi­ niumlegierungen mit Keramik, zuerst auf den nichtmetallischen Teil eine Metallschicht aufzudampfen und mit dieser dann den metallischen Teil zu verlöten. Diese Verbindung hat den Nachteil, daß sie mecha­ nisch wenig stabil und außerdem temperaturempfindlich ist. Die aufge­ dampfte Metallschicht geht mit dem nichtmetallischen Werkstoff nur eine Haftverbindung ein, die bei weitem nicht die Festigkeitswerte einer Schweißverbindung erreicht. Die Temperaturempfindlichkeit der Verbindung wird durch das Lötmittel verursacht, das bei relativ nied­ rigen Temperaturen zu schmelzen beginnt.It is known from DE-A 36 26 009 for a connection from me tallischen with non-metallic parts, for. As aluminum or alumi nium alloys with ceramics, first on the non-metallic part evaporate a metal layer and then the metallic one Part to be soldered. This connection has the disadvantage that it is mecha is not very stable and is also sensitive to temperature. The up steamed metal layer is only possible with the non-metallic material  an adhesive bond that is far from the strength values reached a welded joint. The temperature sensitivity of the Connection is caused by the solder that is at relatively low temperatures starts to melt.

EP-A 0 458 630 offenbart eine Vorrichtung und ein Verfahren für die Herstellung oder Reparatur der Beschaufelung von Hochdruck-Kom­ pressor-Rotoren, sogenannter Blisks, mit engem Abstand der Schaufeln auf einer Nabe. Diesem Stand der Technik ist kein Hinweis auf unter­ schiedliche Materialien der Beschaufelung und der Nabe zu entnehmen, mit denen derartige Rotoren auch bei hohen Temperaturen zuverlässig betrieben werden könnten.EP-A 0 458 630 discloses an apparatus and a method for the Manufacture or repair of blading of high pressure com pressor rotors, so-called blisks, with the blades spaced closely on a hub. This state of the art is no reference to take different materials from the blading and the hub, with which such rotors are reliable even at high temperatures could be operated.

Aufgabe der Erfindung ist es, Schaufelträger für Strömungsmaschinen zu schaffen, mit denen z. B. Gas- oder Dampfturbinen auch bei hohen Tempe­ raturen zuverlässig betrieben werden können und ein Verfahren zur Her­ stellung von derartigen Schaufelträgern zu schaffen.The object of the invention is to provide blade carriers for turbomachines create with which z. B. gas or steam turbines even at high temperatures instruments can be operated reliably and a process for the manufacture to create position of such blade carriers.

Die Lösung der Aufgabe erfolgt mit Schaufelträgern für Strömungs­ maschinen mit den Merkmalen des Anspruchs 1 und einem Verfahren zur Herstellung von derartigen Schaufelträgern mit den Merkmalen des An­ spruchs 2.The task is solved with blade carriers for flow machines with the features of claim 1 and a method for Production of such blade carriers with the features of the Proverbs 2.

Zwischenschichten werden gemäß der Erfindung durch Vakuumlöten, Galva­ nisieren oder Sintern entweder auf Fügeflächen von Schaufeln aus Kera­ mik oder auf Naben aus hochwarmfesten Stahl-Legierungen aufgebracht, so daß sich zunächst eine besonders innige Verbindung der Zwischen­ schicht mit den Schaufeln aus Keramik oder den Naben aus hochwarm­ festen Stahl-Legierungen ergibt.Interlayers are made according to the invention by vacuum soldering, galva or sinter either on the joining surfaces of blades made of Kera applied mic or on hubs made of high-temperature steel alloys, so that there is a particularly intimate connection between the first layer with ceramic blades or high-temperature hubs solid steel alloys.

Die Zwischenschichten enthalten Aluminium (Al) oder Kupfer (Cu) oder Nickel (Ni).The intermediate layers contain aluminum (Al) or copper (Cu) or Nickel (Ni).

Gemäß der Erfindung sind bogenförmige Fügeflächen an den Schaufeln aus Keramik und an den Naben aus metallischem Rundmaterial vorteilhaft mittels zirkularem Reibschweißen oder Vakuumlöten oder Diffusions­ schweißen zu verbinden. Nach dem Fügen erfolgt die mechanische Fertig­ bearbeitung der Fußprofile und gegebenenfalls der Schaufeln.According to the invention, arcuate joining surfaces are made on the blades Ceramic and advantageous on the hubs made of round metal material by means of circular friction welding or vacuum soldering or diffusion  welding to join. After joining, the mechanical finishing takes place machining of the foot profiles and, if necessary, the blades.

Gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung sind plane Fügeflächen an den Schaufeln aus Keramik und an den Naben aus metallischem Flachmaterial besonders vorteilhaft mittels linearem Reibschweißen zu verbinden. Nach dem Fügen erfolgt die mechanische Fertigbearbeitung der Fußprofile und gegebenenfalls der Schaufeln.According to a further advantageous embodiment of the invention flat joining surfaces on the ceramic blades and on the hubs metallic flat material particularly advantageously by means of linear To connect friction welding. After joining, the mechanical Finishing the foot profiles and, if necessary, the blades.

Die Erfindung wird im Folgenden anhand Ausführungsbeispielen erläu­ tert. Es zeigen:The invention is explained below using exemplary embodiments tert. Show it:

Fig. 1, 2 einen Querschnitt durch eine Schaufel und eine Nabe mit bogenförmigen Fügeflächen nach zirkularem Reib­ schweißen, Fig. 1, 2 welded a cross section through a blade and a hub with arcuate joining surfaces by friction zirkularem,

Fig. 3 einen Querschnitt durch eine Schaufel und eine Nabe mit planen Fügeflächen nach linearem Reibschweißen. Fig. 3 shows a cross section through a blade and a hub with flat joining surfaces after linear friction welding.

Fig. 4 eine Ansicht eines Teils eines Schaufelträgers. Fig. 4 is a view of part of a blade carrier.

Fig. 1 Eine Nabe 1 eines Schaufelträgers ist aus einem Stahl-Rundling gebildet. Eine Schaufel 2 aus keramischen Material ist an der Nabe 1 angebracht. Die Schaufel 2 wird aus einem Keramik-Rundling 4 herausge­ arbeitet. Fig. 1 A hub 1 of a blade carrier is formed from a steel round blank. A blade 2 made of ceramic material is attached to the hub 1 . The blade 2 is made of a ceramic round 4 out.

Der Keramik-Rundling 4 ist an Fügefläche 5 oder Nabe 1 an Fügefläche 6 mit einer Zwischenschicht (nicht dargestellt) aus Aluminium (Al) oder Kupfer (Cu) oder Nickel (Ni) beschichtet.The ceramic round blank 4 is coated on the joining surface 5 or hub 1 on the joining surface 6 with an intermediate layer (not shown) made of aluminum (Al) or copper (Cu) or nickel (Ni).

Keramik-Rundling 4 und Nabe 1 sind durch zirkulares Reibschweißen an ihren Fügeflächen 5, 6 über die Zwischenschicht miteinander verbunden, indem Keramik-Rundling 4 und Nabe 1 an ihren Fügeflächen 5, 6 fest gegeneinander gepreßt und mit schnellen Drehbewegungen erhitzt werden. Sind die Fügeflächen 5, 6 und die Zwischenschicht genügend erhitzt, sind der Keramik-Rundling 4 und die Nabe 1 miteinander verbunden.Ceramic Rundling 4 and hub 1 are connected to each other by circular friction welding on their joining surfaces 5 , 6 via the intermediate layer, in that ceramic Rundling 4 and hub 1 are firmly pressed against one another on their joining surfaces 5 , 6 and heated with rapid rotary movements. If the joining surfaces 5 , 6 and the intermediate layer are heated sufficiently, the ceramic round member 4 and the hub 1 are connected to one another.

Anstelle des zirkularen Reibschweißens zur Verbindung des Keramik- Rundling 4 und Nabe 1 kann Vakuumlöten oder Diffusionsschweißen tre­ ten.Instead of the circular friction welding for connecting the ceramic round part 4 and the hub 1 , vacuum soldering or diffusion welding can take place.

Nach dem Reibschweißen werden die Schaufel 2 und der Schaufelfuß 3 aus dem Vollen bearbeitet.After friction welding, the blade 2 and the blade root 3 are machined from the solid.

In Fig. 2 sind entsprechende Elemente mit den Bezugszeichen aus Fig. 1 versehen. Eine fertig bearbeitete Schaufel 2 ist in einer Kassette 8 enthalten. Zwischen Kassette 8 und Schaufel 2 ist Eingußmaterial 9 angeordnet. Keramik-Rundling 4 und Nabe 1 sind durch zirkulares Reib­ schweißen miteinander verbunden.Corresponding elements in FIG. 2 are provided with the reference symbols from FIG. 1. A finished blade 2 is contained in a cassette 8 . Potting material 9 is arranged between the cassette 8 and the blade 2 . Ceramic Rundling 4 and hub 1 are welded together by circular friction welding.

In Fig. 3 sind entsprechende Elemente mit den Bezugszeichen aus Fig. 1 versehen. Eine Schaufel 2 ist in einer Kassette 8 enthalten. Zwischen Kassette 8 und Schaufel 2 ist Eingußmaterial 9 angeordnet. Die Nabe 1 ist aus Stahl-Flachmaterial 10 gebildet. Schaufel 2 und Nabe 10 weisen plane Fügeflächen 11, 12 auf, die durch lineares Reibschweißen mitein­ ander verbunden sind.In FIG. 3, corresponding elements are provided with the reference symbols from FIG. 1. A scoop 2 is contained in a cassette 8 . Potting material 9 is arranged between the cassette 8 and the blade 2 . The hub 1 is formed from flat steel material 10 . Blade 2 and hub 10 have flat joining surfaces 11 , 12 which are connected to one another by linear friction welding.

Schaufel 2 ist an Fügefläche 11 oder Stahl-Flachmaterial 10 an Füge­ fläche 12 mit einer Zwischenschicht (nicht dargestellt) aus Aluminium (Al) oder Kupfer (Cu) oder Nickel (Ni) beschichtet.Blade 2 is coated on joining surface 11 or steel flat material 10 on joining surface 12 with an intermediate layer (not shown) made of aluminum (Al) or copper (Cu) or nickel (Ni).

Schaufel 2 und Stahl-Flachmaterial 10 werden durch lineares Reib­ schweißen an ihren planen Fügeflächen 11, 12 über die Zwischenschicht miteinander verbunden, indem Schaufel 2 und Stahl-Flachmaterial 10 an ihren Fügeflächen 11, 12 fest gegeneinander gepreßt werden. Mit schnellen Linearbewegungen in einer zu den Oberflächen 11, 12 pa­ rallelen Ebene (nicht dargestellt) werden die Fügeflächen 11, 12 und die Zwischenschicht von Schaufel 2 und Stahl-Flachmaterial 10 erhitzt. Sind die Fügeflächen 11, 12 und die Zwischenschicht genügend erhitzt, wird die Linearbewegung ausgesetzt, und Schaufel 2 und Stahl-Flach­ material 10 sind miteinander verbunden.Blade 2 and steel flat material 10 are welded by linear friction welding on their flat joining surfaces 11 , 12 via the intermediate layer, by pressing blade 2 and steel flat material 10 on their joining surfaces 11 , 12 firmly against one another. With rapid linear movements in a plane parallel to the surfaces 11 , 12 (not shown), the joining surfaces 11 , 12 and the intermediate layer of the blade 2 and the steel flat material 10 are heated. If the joining surfaces 11 , 12 and the intermediate layer are heated sufficiently, the linear movement is suspended, and the blade 2 and the flat steel material 10 are connected to one another.

Fig. 4 Eine Stahl-Nabe 14 weist radial nach außen gerichtete Sockel 15, 16 und 17 mit planen Oberflächen 12 auf. Schaufeln 2 sind eben­ falls mit planen Oberflächen 11 ausgestattet. Eine Zwischenschicht (nicht dargestellt) aus Aluminium (Al) oder Kupfer (Cu) oder Nickel (Ni) ist durch Vakuumlöten. Galvanisieren oder Sintern entweder auf den Oberflächen 12 der Sockel 15, 16 und 17 oder auf den Oberflächen 11 der Schaufeln 2 aufgebracht. Die Schaufeln 2 sind durch lineares Reibschweißen mit den Sockeln 15, 16 und 17 auf der Stahl-Nabe 14 be­ festigt. Fig. 4 A steel hub 14 has radially outwardly directed bases 15 , 16 and 17 with flat surfaces 12 . Scoops 2 are also equipped with flat surfaces 11 . An intermediate layer (not shown) made of aluminum (Al) or copper (Cu) or nickel (Ni) is by vacuum soldering. Electroplating or sintering is applied either to the surfaces 12 of the bases 15 , 16 and 17 or to the surfaces 11 of the blades 2 . The blades 2 are fastened by linear friction welding with the bases 15 , 16 and 17 on the steel hub 14 be.

Claims (3)

1. Schaufelträger für Strömungsmaschinen, insbesondere für Gas- oder Dampfturbinen, deren Schaufeln (2) mit metallischen Naben (1, 10, 14) durch Erhitzung einteilig verbunden sind, dadurch ge­ kennzeichnet, daß die Schaufeln (2) aus keramischen Materialien und die Naben 1, 10, 14) aus hochwarmfesten Stahl-Legierungen ge­ fertigt sind, und Zwischenschichten aus Aluminium (Al) oder Kupfer (Cu) oder Nickel (Ni) in den Verbindungen zwischen Schaufeln (2) und Naben (1, 14) enthalten sind, die vor dem Verbinden auf die Schaufeln (2) oder die Naben (1, 10, 14) durch Vakuumlöten oder Galvanisieren oder Sintern aufgebracht wurden.1. blade carrier for turbomachines, in particular for gas or steam turbines, the blades ( 2 ) with metallic hubs ( 1 , 10 , 14 ) are integrally connected by heating, characterized in that the blades ( 2 ) made of ceramic materials and the hubs 1, 10, 14 ) are made of high-temperature steel alloys, and intermediate layers of aluminum (Al) or copper (Cu) or nickel (Ni) are contained in the connections between blades ( 2 ) and hubs ( 1 , 14 ), which were applied to the blades ( 2 ) or the hubs ( 1 , 10 , 14 ) by vacuum soldering or electroplating or sintering prior to connection. 2. Verfahren zur Herstellung von Schaufelträgern für Strömungs­ maschinen gemäß Anspruch 1, gekennzeichnet, durch Erhitzung der Schaufeln (2) und der Naben (1, 10, 14) aus metallischem Rund­ material durch zirkulares Reibschweißen oder Vakuumlöten oder Dif­ fusionsschweißen. Herstellen der Verbindung der Schaufeln (2) mit den metallischen Naben (1, 14), und Bearbeiten der Schaufelfüße (3) und der Schaufeln (2). 2. A method for producing blade carriers for flow machines according to claim 1, characterized by heating the blades ( 2 ) and the hubs ( 1 , 10 , 14 ) made of metallic round material by circular friction welding or vacuum soldering or diff fusion welding. Establishing the connection of the blades ( 2 ) with the metallic hubs ( 1 , 14 ), and machining the blade feet ( 3 ) and the blades ( 2 ). 3. Verfahren zur Herstellung von Schaufelträgern für Strömungs­ maschinen gemäß Anspruch 2, gekennzeichnet durch Erhitzung der Schaufeln (2) und der Naben (1, 14) aus Stahl-Flachmaterial durch lineares Reibschweißen, Herstellen der Verbindung der Schaufeln (2) mit den metallischen Naben (1, 14), und Bearbeiten der Schau­ felfüße (3) und der Schaufeln (2).3. A method for producing blade carriers for flow machines according to claim 2, characterized by heating the blades ( 2 ) and the hubs ( 1 , 14 ) from flat steel material by linear friction welding, producing the connection of the blades ( 2 ) with the metallic hubs ( 1 , 14 ), and machining of the blade feet ( 3 ) and the blades ( 2 ).
DE4409769A 1994-03-22 1994-03-22 Impeller wheels for turbines and mfg process for same Withdrawn DE4409769A1 (en)

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Cited By (10)

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DE19544817A1 (en) * 1995-12-01 1997-06-05 Asea Brown Boveri Manufacturing method for guide vane segments for gas-turbine
DE19718307A1 (en) * 1997-04-30 1998-11-05 Herbert Dr Ing Gropp Press fitting hub on shaft
DE19840466A1 (en) * 1998-09-04 2000-03-16 Manfred Jansen Assembled drive shaft, in particular, for motor vehicles comprises socket joints between the shaft section and the end pieces which have been produced by a combined joining process
EP1029627A1 (en) * 1999-02-18 2000-08-23 Showa Aluminum Corporation Friction agitation jointing method of metal workpieces
DE102008017495A1 (en) * 2008-04-04 2009-10-08 Rolls-Royce Deutschland Ltd & Co Kg Method for producing integrally bladed rotors
DE102008017494A1 (en) * 2008-04-04 2009-10-08 Rolls-Royce Deutschland Ltd & Co Kg Method for manufacturing integrally bladed rotors
EP3238868A1 (en) * 2016-04-27 2017-11-01 MTU Aero Engines GmbH Method for producing a rotor blade for a fluid flow engine
DE102016224386A1 (en) * 2016-12-07 2018-06-07 MTU Aero Engines AG METHOD FOR PRODUCING A SHOVEL FOR A FLOW MACHINE
DE102017223410A1 (en) 2017-12-20 2019-06-27 Rolls-Royce Deutschland Ltd & Co Kg Method for joining components and device
DE102018219590A1 (en) * 2018-11-15 2020-05-20 Rolls-Royce Deutschland Ltd & Co Kg Method for producing a component for a turbomachine

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544817A1 (en) * 1995-12-01 1997-06-05 Asea Brown Boveri Manufacturing method for guide vane segments for gas-turbine
DE19718307A1 (en) * 1997-04-30 1998-11-05 Herbert Dr Ing Gropp Press fitting hub on shaft
DE19840466A1 (en) * 1998-09-04 2000-03-16 Manfred Jansen Assembled drive shaft, in particular, for motor vehicles comprises socket joints between the shaft section and the end pieces which have been produced by a combined joining process
DE19840466C2 (en) * 1998-09-04 2000-11-09 Manfred Jansen Pluggable drive shaft, especially for a motor vehicle
EP1029627A1 (en) * 1999-02-18 2000-08-23 Showa Aluminum Corporation Friction agitation jointing method of metal workpieces
US6227432B1 (en) 1999-02-18 2001-05-08 Showa Aluminum Corporation Friction agitation jointing method of metal workpieces
US8689442B2 (en) 2008-04-04 2014-04-08 Rolls-Royce Deutschland Ltd & Co Kg Method for the fabrication of integrally bladed rotors
DE102008017494A1 (en) * 2008-04-04 2009-10-08 Rolls-Royce Deutschland Ltd & Co Kg Method for manufacturing integrally bladed rotors
DE102008017495A1 (en) * 2008-04-04 2009-10-08 Rolls-Royce Deutschland Ltd & Co Kg Method for producing integrally bladed rotors
DE102008017495B4 (en) * 2008-04-04 2014-11-06 Rolls-Royce Deutschland Ltd & Co Kg Method for producing and rearranging integrally bladed rotors
EP3238868A1 (en) * 2016-04-27 2017-11-01 MTU Aero Engines GmbH Method for producing a rotor blade for a fluid flow engine
US10526902B2 (en) 2016-04-27 2020-01-07 MTU Aero Engines AG Method for producing a blade for a turbomachine
DE102016224386A1 (en) * 2016-12-07 2018-06-07 MTU Aero Engines AG METHOD FOR PRODUCING A SHOVEL FOR A FLOW MACHINE
US10583521B2 (en) 2016-12-07 2020-03-10 MTU Aero Engines AG Method for producing a blade for a turbomachine
DE102017223410A1 (en) 2017-12-20 2019-06-27 Rolls-Royce Deutschland Ltd & Co Kg Method for joining components and device
DE102018219590A1 (en) * 2018-11-15 2020-05-20 Rolls-Royce Deutschland Ltd & Co Kg Method for producing a component for a turbomachine

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