EP3120982A2 - Method for producing fire-retardant ceramics for gas turbine plants - Google Patents

Method for producing fire-retardant ceramics for gas turbine plants Download PDF

Info

Publication number
EP3120982A2
EP3120982A2 EP16001473.4A EP16001473A EP3120982A2 EP 3120982 A2 EP3120982 A2 EP 3120982A2 EP 16001473 A EP16001473 A EP 16001473A EP 3120982 A2 EP3120982 A2 EP 3120982A2
Authority
EP
European Patent Office
Prior art keywords
mold
gas turbine
refractory ceramic
vibration
hot gas
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.)
Withdrawn
Application number
EP16001473.4A
Other languages
German (de)
French (fr)
Other versions
EP3120982A3 (en
Inventor
Claus Krusch
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP3120982A2 publication Critical patent/EP3120982A2/en
Publication of EP3120982A3 publication Critical patent/EP3120982A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/243—Setting, e.g. drying, dehydrating or firing ceramic articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/022—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form combined with vibrating or jolting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/022—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space whereby the material is subjected to vibrations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/007—Continuous combustion chambers using liquid or gaseous fuel constructed mainly of ceramic components

Definitions

  • the invention relates to a process for the production of refractory ceramics for use as a heat shield in the hot gas path of gas turbine plants according to the preamble of claim 1.
  • Gas turbine plants essentially consist of a compressor, a burner and an expansion turbine. Sucked air is compressed in the compressor before it is mixed with fuel in a combustion chamber arranged in the downstream burner arranged in the compressor plenum, and this mixture is burned. The expansion turbine downstream of the combustion chamber then extracts thermal energy from the resulting combustion exhaust gases and converts them into mechanical energy. A generator connected to the expansion turbine converts this mechanical energy for generating electricity into electrical energy.
  • combustion chamber which forms the hot gas path between burner and gas turbine.
  • combustion chamber linings for example in the form of heat shields, are used.
  • Such heat shields can be carried out both metallic and ceramic.
  • ceramic materials are preferred due to the aggressive hot gases, which are produced for example by means of a casting process.
  • a casting mold is used, which as Assembly is assembled from several individual parts.
  • molding surfaces are imaged on all sides by the casting mold, so that the desired component shape results directly.
  • the object of the invention is to provide a method which avoids this disadvantage.
  • a heat shield consisting of at least one refractory ceramic produced by the method is particularly robust and equipped with such a heat shield gas turbine plant can be operated safely.
  • mold cover is used, which dips when placed on the mold shell in the molding compound therein and increasingly affects the casting compound when closing the lid up to the mold closure with a predetermined static pressure.
  • the filling level of the casting compound represents the essential process parameter, which determines the mass displacement and thus the resulting static pressure.
  • the casting lid is already placed under vibration.
  • the mold is then to be provided with a clamping device, with the high clamping forces can be generated.
  • a clamping device represent, for example toggle levers.
  • the geometry of the mold closure already corresponds to the actual geometry of the refractory ceramic K to be produced, so that a post-processing of the component surfaces can be completely eliminated and also the grinding of any existing sprue webs can be significantly reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Ceramic Products (AREA)
  • Continuous Casting (AREA)

Abstract

Die verschlossene, unter statischem Druck stehende Gießform wird anschließend gerichtet vibriert. Mit der Vibrations- bzw. Krafteinleitungsrichtung (V), die durch die Lage der Gießform relativ zur Vibrationsrichtung bestimmt wird, kann die Verteilung der Oberflächen- und Volumenfehler (Lunker) im Bauteil (K) gesteuert werden. Die Krafteinleitungsrichtung (V) ist dabei derart zu wählen, dass sie in Richtung der Oberflächennormalen (N) der qualitätskritischen Bauteilfläche - hier der Heißgasseite (HS) der Feuerfestkeramik - wirkt. Somit kann hier eine nahezu lunkerfreie Oberfläche der Heissgasseite (HS) der Feuerfestkeramik für Gasturbinenanlagen erreicht werden.The sealed, static pressure mold is then vibrated directionally. With the vibration or force introduction direction (V), which is determined by the position of the mold relative to the direction of vibration, the distribution of surface and volume defects (voids) in the component (K) can be controlled. The force introduction direction (V) is to be selected such that it acts in the direction of the surface normal (N) of the quality-critical component surface - here the hot gas side (HS) of the refractory ceramic. Thus, a virtually void-free surface of the hot gas side (HS) of the refractory ceramic for gas turbine plants can be achieved here.

Description

Verfahren zum Herstellen von Feuerfestkeramiken für GasturbinenanlagenProcess for producing refractory ceramics for gas turbine installations

Die Erfindung betrifft ein Verfahren zur Herstellung von Feuerfestkeramiken für den Einsatz als Hitzeschild im Heißgaspfad von Gasturbinenanlagen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a process for the production of refractory ceramics for use as a heat shield in the hot gas path of gas turbine plants according to the preamble of claim 1.

Gasturbinenanlagen bestehen im Wesentlichen aus einem Verdichter, einem Brenner und einer Entspannungsturbine. Im Verdichter wird angesaugte Luft verdichtet, bevor sie im nachgeschalteten und im Verdichterplenum angeordneten Brenner in einer Brennkammer mit Brennstoff gemischt und dieses Gemisch verbrannt wird. Die der Brennkammer nachgeschaltete Entspannungsturbine entzieht dann den entstandenen Verbrennungsabgasen thermische Energie und wandelt diese in mechanische Energie um. Ein mit der Entspannungsturbine verbundener Generator wandelt diese mechanische Energie zur Stromerzeugung noch in elektrische Energie um.Gas turbine plants essentially consist of a compressor, a burner and an expansion turbine. Sucked air is compressed in the compressor before it is mixed with fuel in a combustion chamber arranged in the downstream burner arranged in the compressor plenum, and this mixture is burned. The expansion turbine downstream of the combustion chamber then extracts thermal energy from the resulting combustion exhaust gases and converts them into mechanical energy. A generator connected to the expansion turbine converts this mechanical energy for generating electricity into electrical energy.

Im Betrieb der Gasturbinenanlage entstehen in der Brennkammer, die den Heißgaspfad zwischen Brenner und Gasturbine bildet, Temperaturen, die typischerweise in der Größenordnung von ca. 1300 bis 1500 Grad Celsius liegen. Zur thermischen Abschirmung der den Heißgaspfad umschließenden Bauteile und Tragstrukturen werden deshalb entsprechende Brennkammerauskleidungen, beispielsweise in Form von Hitzeschilden, eingesetzt.During operation of the gas turbine plant, temperatures which are typically in the order of about 1300 to 1500 degrees Celsius arise in the combustion chamber, which forms the hot gas path between burner and gas turbine. For thermal shielding of the hot gas path enclosing components and support structures therefore appropriate combustion chamber linings, for example in the form of heat shields, are used.

Solche Hitzeschilde können dabei sowohl metallisch als auch keramisch ausgeführt werden. Bei Gasturbinenanlagen werden aufgrund der agressiven Heißgase keramische Materialien bevorzugt, die beispielsweise mittels eines Gießprozesses hergestellt werden. Hierzu ist ein Werkzeug sowie ein Verfahren zur Herstellung von Feuerfestkeramiken aus der EP 1 741 531 A1 bekannt. Dabei wird eine Gießform eingesetzt, welche als Baugruppe aus mehreren Einzelteilen zusammengebaut ist. Hierbei werden allseitig Formflächen durch die Gießform abgebildet, so dass sich unmittelbar die gewünschte Bauteilform ergibt. Zur Einbringung des Materials ist eine Einfüllöffnung vorhanden, in der sich überschüssiges Material zurückstauen kann.Such heat shields can be carried out both metallic and ceramic. In gas turbine plants ceramic materials are preferred due to the aggressive hot gases, which are produced for example by means of a casting process. For this purpose, a tool and a method for producing refractory ceramics from the EP 1 741 531 A1 known. In this case, a casting mold is used, which as Assembly is assembled from several individual parts. In this case, molding surfaces are imaged on all sides by the casting mold, so that the desired component shape results directly. For the introduction of the material there is a filling opening, in which excess material can accumulate.

Im Verlauf des Gießprozesses können aber in der Gießmasse Lufteinschlüsse entstehen, die zu Fehlstellen (Lunker) im Grünling bzw. im fertig gebrannten Bauteil führen können. Diese Fehlstellen liegen dabei sowohl im Volumen als auch an der Oberfläche der Feuerfestkeramiken vor. Oberflächenfehler stellen aber gerade auf der Heißgasseite der Feuerfestkeramik das Hauptausschusskriterium im Rahmen der Qualitätskontrolle dar, da diese die mechanischen Eigenschaften besonders beeinflussen. Durch die Lunker kann es zu einer Schwächung der mechanischen Strukturen und damit zu einer verstärkten Rissbildung in der Feuerfestkeramik kommen.In the course of the casting process, however, air pockets can form in the casting compound which can lead to defects (blowholes) in the green body or in the finished component. These defects are present both in volume and on the surface of the refractory ceramics. On the hot gas side of refractory ceramics, however, surface defects are the main criterion for the quality control review since they have a particular influence on the mechanical properties. Due to the voids, it can lead to a weakening of the mechanical structures and thus to increased cracking in the refractory ceramic.

Aufgabe der Erfindung ist es, ein Verfahren bereit zu stellen, das diesen Nachteil vermeidet.The object of the invention is to provide a method which avoids this disadvantage.

Diese Aufgabe wird mit dem Verfahren des Anspruchs 1 gelöst.This object is achieved by the method of claim 1.

Gattungsgemäß umfasst das Verfahren die folgende Schritte:

  • Einfüllen einer Gießmasse in eine Bauteilgießform für eine Feuerfestkeramik,
  • Verschließen der Gießform, so dass die Gießmasse nach dem Verschließen unter einem definierten statischen Druck steht,
  • gerichtetes Vibrieren der Gießform in Richtung (V) einer Oberflächenormalen (N) einer Oberfläche der herzustellenden Feuerfestkeramik, an die besondere Qualitätsanforderungen für den Einsatz als Hitzeschild gestellt werden,
  • und anschließendes Entformen und Brennen des gegossenen Bauteils.
Generically, the method comprises the following steps:
  • Filling a casting compound into a component casting mold for a refractory ceramic,
  • Closing the casting mold so that the casting compound, after sealing, is under a defined static pressure,
  • directed vibration of the casting mold in the direction (V) of a surface standard (N) of a surface of the refractory ceramic to be produced, to which special quality requirements for use as a heat shield are set,
  • and then demolding and firing the cast component.

Dadurch, dass die Gießmasse nach dem Einbringen in die Gießform unter Aufrechterhaltung eines definierten statischen Drucks in Richtung der Oberflächennormalen qualitätskritischer Bauteilflächen gerichtet vibriert wird, lässt sich eine nahezu lunkerfreie Oberfläche erzielen. Eine Schwächung des keramischen Hitzeschildes, insbesondere der am stärksten beanspruchten Heißgasseite aufgrund festigkeitsreduzierender Fehlstellen, wird so effektiv verhindert.Characterized in that the casting material after introduction into the mold while maintaining a defined static pressure in the direction of the surface normal quality critical Directed component surfaces vibrated, can achieve a virtually void-free surface. A weakening of the ceramic heat shield, in particular the most highly stressed hot gas site due to strength-reducing defects, is effectively prevented.

Ein Hitzeschild bestehend aus zumindest einer Feuerfestkeramik die mit dem Verfahren hergestellt ist, ist dabei besonders robust und eine mit einem solchen Hitzeschild ausgerüstete Gasturbinenanlage kann sicher betrieben werden.A heat shield consisting of at least one refractory ceramic produced by the method is particularly robust and equipped with such a heat shield gas turbine plant can be operated safely.

Die Erfindung soll nun anhand der in der Figur beispielhaft dargestellten Feuerfestkeramik K erläutert werden. Im Rahmen des Gießprozesses dieser Feuerfestkeramik kommt ein nicht näher gezeigter Gießformdeckel zum Einsatz, der beim Aufsetzen auf die Gießformschale in die darin befindliche Gießmasse eintaucht und die Gießmasse beim Schließen des Deckels zunehmend bis hin zum Gießformverschluss mit einem zuvor festgelegten statischen Druck beaufschlagt.The invention will now be explained with reference to the refractory ceramic K exemplified in the figure. As part of the casting process of this refractory ceramic is not shown in detail mold cover is used, which dips when placed on the mold shell in the molding compound therein and increasingly affects the casting compound when closing the lid up to the mold closure with a predetermined static pressure.

Bei gegebener Deckelgeometrie stellt die Füllhöhe der Gießmasse den wesentlichen Prozessparameter dar, der den Masse-Verdrängungsgrad und damit den resultierenden statischen Druck bestimmt.For a given lid geometry, the filling level of the casting compound represents the essential process parameter, which determines the mass displacement and thus the resulting static pressure.

Erfindungsgemäß erfolgt bereits das Aufsetzen des Gießformdeckels unter Vibration.According to the invention, the casting lid is already placed under vibration.

Zum sicheren Gießformverschluss ist die Gießform dann mit einer Spannvorrichtung zu versehen, mit der hohe Spannkräfte erzeugt werden können. Eine derartige Spannvorrichtung stellen beispielsweise Kniehebelspanner dar.For a secure mold closure, the mold is then to be provided with a clamping device, with the high clamping forces can be generated. Such a clamping device represent, for example toggle levers.

Vorzugsweise entspricht die Geometrie des Gießformverschlusses schon der eigentlichen Geometrie der zu erzeugenden Feuerfestkeramik K, so dass eine Nachbearbeitung der Bauteilflächen ganz entfallen kann und auch das Schleifen gegebenenfalls vorhandener Angussstege deutlich reduziert werden kann.Preferably, the geometry of the mold closure already corresponds to the actual geometry of the refractory ceramic K to be produced, so that a post-processing of the component surfaces can be completely eliminated and also the grinding of any existing sprue webs can be significantly reduced.

Claims (3)

Verfahren zur Herstellung von Feuerfestkeramiken für den Einsatz als Hitzeschild im Heißgaspfad von Gasturbinenanlagen, umfassend die Schritte: - Einfüllen einer Gießmasse in eine Bauteilgießform für die Feuerfestkeramik, - Vibration der Gießform, - Aufsetzen eines Gießformdeckels mit fortgesetzter Vibration, - Aufbringung einer Spannkraft auf den Gießformdeckel mittels einer Spannvorrichtung, so dass die Gießmasse unter Druck steht, - gerichtetes Vibrieren der Gießform in Richtung (V) einer Oberflächennormalen (N) einer ersten Oberfläche (HS) der herzustellenden Feuerfestkeramik, an die besondere Qualitätsanforderungen für den Einsatz als Hitzeschild gestellt werden, - und anschließendes Entformen und Brennen des gegossenen Bauteils. Process for the production of refractory ceramics for use as a heat shield in the hot gas path of gas turbine plants, comprising the steps: Filling a casting compound into a component casting mold for the refractory ceramic, Vibration of the mold, Placing a mold cover with continued vibration, Application of a clamping force to the mold cover by means of a clamping device, so that the molding compound is under pressure, directed vibration of the casting mold in the direction (V) of a surface normal (N) of a first surface (HS) of the refractory ceramic to be produced, to which special quality requirements for use as a heat shield are made, - And then demolding and firing of the cast component. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
dass die Oberfläche an die besondere Qualitätsanforderungen gestellt wird, die Heißgasseite (HS) der Feuerfestkeramik (K) ist.Method according to claim 1,
characterized,
that the surface is made to the special quality requirements, the hot gas (HS) of the refractory ceramic (K) is. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der von der Spannvorrichtung erzeugt Druck im Wesentlichen durch die Füllhöhe bestimmt wird.Method according to claim 1 or 2,
characterized,
that the pressure generated by the clamping device is determined essentially by the filling level.
EP16001473.4A 2011-08-31 2012-08-14 Method for producing fire-retardant ceramics for gas turbine plants Withdrawn EP3120982A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011081847A DE102011081847A1 (en) 2011-08-31 2011-08-31 Process for producing refractory ceramics for gas turbine installations
EP12748202.4A EP2750844A1 (en) 2011-08-31 2012-08-14 Process for producing refractory ceramics for gas turbine plants

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP12748202.4A Division EP2750844A1 (en) 2011-08-31 2012-08-14 Process for producing refractory ceramics for gas turbine plants

Publications (2)

Publication Number Publication Date
EP3120982A2 true EP3120982A2 (en) 2017-01-25
EP3120982A3 EP3120982A3 (en) 2017-03-08

Family

ID=46690500

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16001473.4A Withdrawn EP3120982A3 (en) 2011-08-31 2012-08-14 Method for producing fire-retardant ceramics for gas turbine plants
EP12748202.4A Withdrawn EP2750844A1 (en) 2011-08-31 2012-08-14 Process for producing refractory ceramics for gas turbine plants

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP12748202.4A Withdrawn EP2750844A1 (en) 2011-08-31 2012-08-14 Process for producing refractory ceramics for gas turbine plants

Country Status (5)

Country Link
US (1) US20140165573A1 (en)
EP (2) EP3120982A3 (en)
DE (1) DE102011081847A1 (en)
RU (1) RU2014112056A (en)
WO (1) WO2013029980A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105128139A (en) * 2015-09-30 2015-12-09 佛山市新鹏工业服务有限公司 Vibration mold for pressing ceramic tile
CN114484506B (en) * 2022-01-27 2023-04-18 西安鑫垚陶瓷复合材料有限公司 Shaping mold for ceramic matrix composite single-head flame tube and preparation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1741531A1 (en) 2005-07-07 2007-01-10 Siemens Aktiengesellschaft Mould for the production of a ceramic heat shield elements

Family Cites Families (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE563358C (en) * 1930-01-28 1932-11-04 Heinrich Koppers Akt Ges Shaking machine for the production of bricks for the manufacture of refractory bricks
GB380432A (en) * 1930-04-16 1932-09-13 Elisabeth Lux Improvements in or relating to moulding for the manufacture of refractory masses
US1944989A (en) * 1930-08-11 1934-01-30 Koppers Co Delaware Method and apparatus for making ceramic shapes
US2959900A (en) * 1956-10-12 1960-11-15 S G Leoffler Packaging finely divided materials
DE1252835B (en) * 1964-05-21 1967-10-26 Farbwerke Hoechst Aktiengesellschaft vormals Meister Lucius &. Brüning, Frankfurt/M Use of condensed aluminum phosphates to harden water glass cement
DE1758927B1 (en) * 1968-09-04 1970-12-17 Vaw Ver Aluminium Werke Ag Shaking device for the production of high density carbon electrodes for the aluminum industry
US3650783A (en) * 1969-05-13 1972-03-21 Du Pont Trivalent metal phosphate coated colloidal silica molding powders
US3547670A (en) * 1969-05-28 1970-12-15 Fmc Corp Metal oxide-phosphoric acid coatings
US3634286A (en) * 1969-07-09 1972-01-11 Du Pont Stable homogeneous suspension of silicaphosphate composition and method of preparation
JPS4927515Y1 (en) * 1970-03-31 1974-07-25
US3708317A (en) * 1970-12-07 1973-01-02 Koninklijke Hoogovens En Staal Metallurgical furnace lining and method of production
GB1365287A (en) * 1970-12-11 1974-08-29 Ici Ltd Graphite compositions
US3801704A (en) * 1971-03-15 1974-04-02 Teikoku Kako Co Ltd Aluminum phosphate and a producing method therefor
JPS5338283B2 (en) * 1972-05-19 1978-10-14
US3944193A (en) * 1972-08-26 1976-03-16 Nippon Steel Corporation Method and apparatus for forming by vibration a refractory lining of a container for a molten metal
BG27273A1 (en) * 1974-02-25 1979-10-12 Vnii P Rabot Ogneu Promysch Method and press for moulding details from powdered and granular materials
US4150999A (en) * 1974-08-12 1979-04-24 Denki Kagaku Kogyo Kabushiki Kaisha Method for manufacture of ferrosilicon nitride
US4035124A (en) * 1975-01-27 1977-07-12 Old Fort International, Inc. Block molding machine
JPS583998B2 (en) * 1975-02-15 1983-01-24 ニホンルツボ カブシキガイシヤ Futei Keitai Kazai
US4171227A (en) * 1976-11-24 1979-10-16 Pq Corporation Alumina-silica binder for coating compositions
FR2550953B1 (en) * 1977-04-12 1987-02-20 Commissariat Energie Atomique PROCESS FOR PRODUCING PERMEABLE MINERAL MEMBRANES
US4238177A (en) * 1978-04-24 1980-12-09 Crile Eugene E Molding machine with vibration isolation
US4235580A (en) * 1978-06-01 1980-11-25 Besser Company Noise suppression structure for block making machinery
JPS5844052B2 (en) * 1979-04-13 1983-09-30 新日本製鐵株式会社 Method of manufacturing fireproof blocks
US4244682A (en) * 1979-09-20 1981-01-13 Willingham John H Portable concrete molding apparatus
US4517037A (en) * 1981-11-02 1985-05-14 Aluminum Company Of America Refractory composition comprising nitride filler and colloidal sol binder
JPS5927749A (en) * 1982-08-06 1984-02-14 Hitachi Ltd Production of casting mold for precision casting
US4510253A (en) * 1983-05-26 1985-04-09 Combustion Engineering, Inc. Aluminum resistant ceramic fiber composition
JPS60171104A (en) * 1984-02-15 1985-09-04 品川白煉瓦株式会社 Hydraulic press for molding fire brick with vibrator
US4828495A (en) * 1984-04-03 1989-05-09 Denpac Corp. Sintered alloy dental prosthetic devices and method
US4803025A (en) * 1984-04-23 1989-02-07 Swiss Aluminium Ltd. Ceramic foam
AT379335B (en) * 1984-05-10 1985-12-27 Voest Alpine Ag FURNISHING ON A CONTINUOUS CASTING SYSTEM WITH AN OSCILLATING CONTINUOUS CHOCOLATE SUSPENDED OR SUPPORTED ON A FIXED POST
DE3445559C1 (en) * 1984-12-14 1986-08-14 Martin & Pagenstecher GmbH, 5000 Köln Refractory, thixotropic vibration mass as well as method and device for the vibration delivery of metallurgical vessels with this mass
US4966538A (en) * 1988-06-01 1990-10-30 Buehler, Ltd. Mounting press
US5147834A (en) * 1989-08-15 1992-09-15 Magneco/Metrel, Inc. Gunning composition
US5147830A (en) * 1989-10-23 1992-09-15 Magneco/Metrel, Inc. Composition and method for manufacturing steel-containment equipment
US5064787A (en) * 1989-11-20 1991-11-12 Magneco/Metrel, Inc. Ramming compositions
US5397110A (en) * 1993-02-08 1995-03-14 North American Refractories Company Refractory brick and method of making and using same
US5418198A (en) * 1993-08-23 1995-05-23 Magneco/Metrel, Inc. Pelletizable gunning composition
US5422323A (en) * 1994-04-15 1995-06-06 Magneco/Metrel, Inc. Nonhazardous pumpable refractory insulating composition
US5494267A (en) * 1994-07-26 1996-02-27 Magneco/Metrel, Inc. Pumpable casting composition and method of use
GB9617010D0 (en) * 1996-08-13 1996-09-25 Shaw Richard D Improved refractory binder
US7628951B1 (en) * 2005-10-21 2009-12-08 Ceramatec, Inc. Process for making ceramic insulation
EP2168935A1 (en) * 2008-09-29 2010-03-31 Siemens Aktiengesellschaft Material compound for producing a fire-retardant material and its application and fire-retardant moulding body and method for its manufacture
US9315426B2 (en) * 2010-05-20 2016-04-19 Comanche Tecnologies, LLC Coatings for refractory substrates
KR101321944B1 (en) * 2012-03-30 2013-11-04 한국과학기술연구원 Cement-free High Strength Unshaped Refractories

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1741531A1 (en) 2005-07-07 2007-01-10 Siemens Aktiengesellschaft Mould for the production of a ceramic heat shield elements

Also Published As

Publication number Publication date
DE102011081847A1 (en) 2013-02-28
EP3120982A3 (en) 2017-03-08
WO2013029980A1 (en) 2013-03-07
EP2750844A1 (en) 2014-07-09
RU2014112056A (en) 2015-10-10
US20140165573A1 (en) 2014-06-19

Similar Documents

Publication Publication Date Title
EP2099582B1 (en) Device and method for the repair or production of blade tips of blades of a gas turbine, in particular of an aircraft engine
DE69901440T2 (en) USE OF HIGH TEMPERATURE INSULATION OF CERAMIC COMPOSITIONS IN GAS TURBINES
DE102012206125A1 (en) Process for the production of low-pressure turbine blades made of TiAl
DE69910922T2 (en) Process for injection molding an article emulating a master model
WO2010051799A2 (en) Repair method
EP2826959B1 (en) Insulating element for a casing of an aircraft engine
CH707668A2 (en) Gas turbine system.
DE102008007820A1 (en) Process for repairing a metallic hollow body
WO2009065385A1 (en) Method for repairing a gas turbine component
EP1730388A1 (en) Method for protecting openings in a component during processing
EP3120982A2 (en) Method for producing fire-retardant ceramics for gas turbine plants
DE102012101032A1 (en) Rotary piston engine and method of manufacturing a rotary piston engine
WO2014146997A1 (en) Additive method, in particular for producing a coating, device for performing the method, coating, component production method, and component
DE112016000230T5 (en) Method for producing a turbine wheel
DE102013220256A1 (en) mold
EP3684743B1 (en) Method for connecting components made of sic
WO2021094026A1 (en) Method for the layer-by-layer additive manufacturing of a composite material
EP2159380A1 (en) Gas turbine assembly with a porous housing and fabrication method
DE102019214667A1 (en) Component with an area to be cooled and means for the additive manufacture of the same
EP2628816A1 (en) Method for applying a heat insulation layer
DE102015106126A1 (en) Core box for the production of casting cores
DE102018204493A1 (en) Method of repairing turbine blades
EP3029267A1 (en) Method of manufacturing a vibration damper for a turbine blade by laser build-up welding
DE102019000558A1 (en) CERAMIC COVER, TURBINE ELEMENT, GAS TURBINE, METHOD FOR THE PRODUCTION OF CERAMIC COATING, AND METHOD FOR REPAIRING CERAMIC COVER
DE102020202089A1 (en) Platform structure for a turbine blade and additive manufacturing process

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AC Divisional application: reference to earlier application

Ref document number: 2750844

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: F23R 3/00 20060101ALI20170127BHEP

Ipc: B28B 1/087 20060101AFI20170127BHEP

Ipc: B28B 3/02 20060101ALI20170127BHEP

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: SIEMENS AKTIENGESELLSCHAFT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20170909