EP1991380A1 - Verfahren zur herstellung eines dichtsegments und dichtsegment zur verwendung in verdichter- und turbinenkomponenten - Google Patents
Verfahren zur herstellung eines dichtsegments und dichtsegment zur verwendung in verdichter- und turbinenkomponentenInfo
- Publication number
- EP1991380A1 EP1991380A1 EP07721961A EP07721961A EP1991380A1 EP 1991380 A1 EP1991380 A1 EP 1991380A1 EP 07721961 A EP07721961 A EP 07721961A EP 07721961 A EP07721961 A EP 07721961A EP 1991380 A1 EP1991380 A1 EP 1991380A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixture
- sealing segment
- molded body
- powder
- metal
- 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- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 63
- 239000000203 mixture Substances 0.000 claims abstract description 40
- 239000000919 ceramic Substances 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 32
- 238000005299 abrasion Methods 0.000 claims abstract description 20
- 238000001746 injection moulding Methods 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 16
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000008240 homogeneous mixture Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 229910052582 BN Inorganic materials 0.000 claims description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 150000001247 metal acetylides Chemical class 0.000 claims description 2
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 229920003986 novolac Polymers 0.000 claims description 2
- 229920001568 phenolic resin Polymers 0.000 claims description 2
- 239000005011 phenolic resin Substances 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 241000792859 Enema Species 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007920 enema Substances 0.000 description 1
- 229940095399 enema Drugs 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/638—Removal thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
- C04B37/02—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles
- C04B37/021—Joining burned ceramic articles with other burned ceramic articles or other articles by heating with metallic articles in a direct manner, e.g. direct copper bonding [DCB]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- 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
- B28B1/002—Producing shaped prefabricated articles from the material assembled from preformed elements
-
- 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
- B28B1/24—Producing shaped prefabricated articles from the material by injection moulding
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
- C04B2235/6027—Slip casting
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/34—Oxidic
- C04B2237/341—Silica or silicates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/361—Boron nitride
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/32—Ceramic
- C04B2237/36—Non-oxidic
- C04B2237/363—Carbon
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
- C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
- C04B2237/40—Metallic
-
- 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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00018—Manufacturing combustion chamber liners or subparts
Definitions
- the present invention relates to a method for producing a sealing segment for use in compressor and turbine components by means of powder injection molding and a sealing segment for use in compressor and turbine components consisting of at least a first molded body as the base member and at least one second molded body with a compared to the first molded body higher abrasion than rubbing on.
- Such sealing segments are used in particular in so-called gap holding systems in the compressor and turbine components for use.
- such sealing segments or sealing systems have the task to keep a sealing gap of rotating blading to a housing as well as the gap of a standing blading to the rotating rotor hub minimal and thus to guarantee a stable performance with high efficiency.
- the rotating components of the turbine sealing fins which run in a known manner against honeycomb seals.
- honeycomb seal is disclosed by WO 2004/061340 Al. This known honeycomb seal consists of a single molded body produced by powder metallurgical injection molding.
- Said enema process can easily lead to overheating in the sealing fins, if the contact with the honeycomb material takes too long or the resulting resistance in abrading the honeycomb is too high. Damage to the sealing fins can therefore not be ruled out in known sealing segments or corresponding inlet linings.
- a process according to the invention for producing a sealing segment for use in compressor and turbine components by means of powder injection molding comprises the following process steps according to the invention: a) preparation of a first homogeneous mixture of a metal powder or a mixture of metal powders or a ceramic powder or a mixture of ceramic powders and at least one binder; b) producing a first molded article by injection molding of the first mixture; c) Preparation of a second homogeneous mixture of a metal powder or a mixture of metal powders or a ceramic powder or a mixture of ceramic powders and at least one binder, wherein the second mixture is selected such that it compared to the first mixture for a subsequent common sinter - process has a higher abrasion; d) producing a second shaped body as a rubbing layer by means of injection molding of the second mixture; and e) connecting the first and second shaped bodies to produce the sealing segment.
- the use of the powder injection molding process ensures a cost-effective and also individual production of the required sealing segments.
- all sprayable and sinterable metals, metal alloys and ceramics can be used. It is also conceivable to mix the metal or ceramic powders.
- the sinterable ceramics may include, for example, nitride, oxide and silicate ceramics and carbides.
- Decisive in the production of the sealing system according to the invention is that the abradable coating consists from the second molded body has a higher abrasion than serving as a base and / or fastener for the sealing segment first molded body. According to the invention it is therefore possible to meet a wide variety of material requirements for such a sealing segment in compressor and turbine components.
- properties of the second shaped body concerning the abrasion behavior such as the emergence of only low frictional energies and resistances, the good chip formation and removability of the abrasion, or also the prevention of an inflammation of the abrasion when rubbing, individually on the tapping components the turbine, such as sealing fins, are tuned.
- the stress of the sealing fins is significantly reduced by the rubbing, whereby the corresponding sealing gap can be reduced in an advantageous manner.
- honeycomb seals or honeycomb inlet coverings with conventional geometry have to be produced; it is also possible to develop aerodynamically more effective and production-technically more cost-effective geometries.
- honeycomb shape completely eliminated and correspondingly flat layers are produced cost-saving.
- even the first mold element, which serves as a base or fastener of the sealing segment to vote on the appropriate technical and material engineering conditions. This concerns in particular the temperature and erosion resistance.
- the bonding of the first and second shaped bodies can take place immediately after their production and before a joint delivery process of the shaped bodies.
- the joining of the first and second shaped bodies takes place after a separate delivery process and before a subsequent common sintering process of the shaped bodies.
- the joining of the first and second shaped bodies can be carried out after a separate debinding and sintering process of the molded articles. body takes place. In the latter case, both mechanical and chemical bonding processes are possible.
- the higher abrasion of the second shaped body is achieved by reducing the proportion of metal powder or ceramic powder in the second mixture.
- the metal powder or ceramic powder content in the second mixture is only about 15-30% by volume. This results in sintering a porous structure by reduced grain contacts.
- the higher abrasion of the second molded body is achieved by the use of metal and ceramic powders with reduced sintering activity.
- metal powder with low purity class, d. H. For example, higher C and O content can be used.
- deaerated air instead of inertgasverdüstem metal powder leads to a higher C and O occupancy of the surfaces and thus to a reduced sintering activity.
- inexpensive metal or ceramic powders can be used, it is achieved a homogeneous porosity distribution and a reduction of the demixing effects. Again, no changes to the process parameters are necessary.
- the higher abrasion of the second shaped body is achieved by admixing binder polymers which do not completely decompose during delivery and / or sintering to form the second mixture.
- the binder polymers can be selected from the group of phenolic resins or novolac.
- the addition of binder polymers results in a reduction of the sintering activity, resulting in carbon residues in the grain gussets of the metal or ceramic powder particles in the sintered product, see above that good abrasion properties can be achieved.
- the higher abrasion of the second molded body is achieved by admixing fillers to the second mixture.
- the fillers of easily cleavable inert materials such as graphite, bentonite or hexagonal boron nitride and / or materials which decompose at least partially during debindering and / or sintering and contribute to the formation of pores in the second molded body, may arise.
- an evaporation takes place during sintering, whereby it comes to pore formation in the stripping layer and the second molded body.
- the fillers do not decompose and in the sintered product, d. H.
- the stripping layer or the second shaped body remain in the grain gussets of the metal or ceramic powder particles. This results overall in a very easily cleavable or abradable Abstreif für.
- the formation of pores in the subsequent use of the sealing segment by superficial oxidation for example, in the choice of graphite as a filler.
- An inventive sealing segment for use in compressor and turbine components consists of at least one first molded body as the base element and / or fastening element and at least one second molded body having a higher abrasion than the squealer layer compared to the first molded body, wherein the first and the second molded body are each by means of powder injection molding is made. Due to the at least two-layer design of the sealing segment according to the invention, it is possible to on the one hand the base and / or fastener, namely the first molded body, as well as the stripping, namely the second molded body, both in their geometries as well as the material compositions to meet the technical and material requirements.
- the sealing segment may be, for example, an inlet lining for sealing a radial gap between a rotating blade and a housing of a gas turbine. Furthermore, it is possible that the sealing segment is honeycomb-shaped.
- the sealing segment according to the invention is produced by a method as has been described in detail above.
- the sealing segment of the invention consists of a plurality of molded articles, wherein at least two molded bodies are produced by means of powder injection molding.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Powder Metallurgy (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006009860A DE102006009860A1 (de) | 2006-03-03 | 2006-03-03 | Verfahren zur Herstellung eines Dichtsegments und Dichtsegment zur Verwendung in Verdichter- und Turbinenkomponenten |
| PCT/DE2007/000360 WO2007098739A1 (de) | 2006-03-03 | 2007-02-27 | Verfahren zur herstellung eines dichtsegments und dichtsegment zur verwendung in verdichter- und turbinenkomponenten |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1991380A1 true EP1991380A1 (de) | 2008-11-19 |
Family
ID=38226598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP07721961A Withdrawn EP1991380A1 (de) | 2006-03-03 | 2007-02-27 | Verfahren zur herstellung eines dichtsegments und dichtsegment zur verwendung in verdichter- und turbinenkomponenten |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090041607A1 (de) |
| EP (1) | EP1991380A1 (de) |
| CA (1) | CA2643568A1 (de) |
| DE (1) | DE102006009860A1 (de) |
| WO (1) | WO2007098739A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008019331A1 (de) * | 2008-04-16 | 2009-10-22 | Rolls-Royce Deutschland Ltd & Co Kg | Einlaufdichtung für den Kompressor eines Gasturbinentriebwerks |
| US10226818B2 (en) | 2009-03-20 | 2019-03-12 | Pratt & Whitney Canada Corp. | Process for joining powder injection molded parts |
| CA2797746C (en) * | 2009-04-29 | 2021-12-07 | Maetta Sciences Inc. | A method for co-processing components in a metal injection molding process, and components made via the same |
| DE102009055914A1 (de) * | 2009-11-27 | 2011-06-09 | Rolls-Royce Deutschland Ltd & Co Kg | Dichtringe für eine Labyrinthdichtung |
| US9903275B2 (en) | 2014-02-27 | 2018-02-27 | Pratt & Whitney Canada Corp. | Aircraft components with porous portion and methods of making |
| US9970318B2 (en) * | 2014-06-25 | 2018-05-15 | Pratt & Whitney Canada Corp. | Shroud segment and method of manufacturing |
| US9517507B2 (en) | 2014-07-17 | 2016-12-13 | Pratt & Whitney Canada Corp. | Method of shaping green part and manufacturing method using same |
| US20160263656A1 (en) | 2015-03-12 | 2016-09-15 | Pratt & Whitney Canada Corp. | Method of forming a component from a green part |
| CN104841940A (zh) * | 2015-04-01 | 2015-08-19 | 宝得粉末注射成形(常熟)有限公司 | 小型涡轮发动机叶片的制备方法 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3844011A (en) * | 1970-12-21 | 1974-10-29 | Gould Inc | Powder metal honeycomb |
| CA963497A (en) * | 1970-12-21 | 1975-02-25 | Gould Inc. | Powder metal honeycomb |
| US5024695A (en) * | 1984-07-26 | 1991-06-18 | Ultrafine Powder Technology, Inc. | Fine hollow particles of metals and metal alloys and their production |
| US4639388A (en) * | 1985-02-12 | 1987-01-27 | Chromalloy American Corporation | Ceramic-metal composites |
| US6547522B2 (en) * | 2001-06-18 | 2003-04-15 | General Electric Company | Spring-backed abradable seal for turbomachinery |
| FR2840839B1 (fr) * | 2002-06-14 | 2005-01-14 | Snecma Moteurs | Materiau metallique susceptible d'etre use par abrasion; pieces, carter; procede d'elaboration dudit materiau |
| DE10259963B4 (de) * | 2002-12-20 | 2010-04-01 | Mtu Aero Engines Gmbh | Wabendichtung |
| US6969231B2 (en) * | 2002-12-31 | 2005-11-29 | General Electric Company | Rotary machine sealing assembly |
| DE10331397A1 (de) * | 2003-07-11 | 2005-01-27 | Mtu Aero Engines Gmbh | Verfahren zur Herstellung von Bauteilen einer Gasturbine sowie entsprechendes Bauteil |
| DE10343782A1 (de) * | 2003-09-22 | 2005-04-14 | Mtu Aero Engines Gmbh | Verfahren zur Herstellung von Bauteilen |
-
2006
- 2006-03-03 DE DE102006009860A patent/DE102006009860A1/de not_active Withdrawn
-
2007
- 2007-02-27 EP EP07721961A patent/EP1991380A1/de not_active Withdrawn
- 2007-02-27 WO PCT/DE2007/000360 patent/WO2007098739A1/de not_active Ceased
- 2007-02-27 US US12/224,681 patent/US20090041607A1/en not_active Abandoned
- 2007-02-27 CA CA002643568A patent/CA2643568A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007098739A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006009860A1 (de) | 2007-09-06 |
| CA2643568A1 (en) | 2007-09-07 |
| US20090041607A1 (en) | 2009-02-12 |
| WO2007098739A1 (de) | 2007-09-07 |
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