EP3615263A1 - Repaired ring and method for repairing a ring which is used for sealing purposes - Google Patents

Repaired ring and method for repairing a ring which is used for sealing purposes

Info

Publication number
EP3615263A1
EP3615263A1 EP18723421.6A EP18723421A EP3615263A1 EP 3615263 A1 EP3615263 A1 EP 3615263A1 EP 18723421 A EP18723421 A EP 18723421A EP 3615263 A1 EP3615263 A1 EP 3615263A1
Authority
EP
European Patent Office
Prior art keywords
ring
repaired
thickening
repairing
sealing
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.)
Pending
Application number
EP18723421.6A
Other languages
German (de)
French (fr)
Inventor
Ralf Bell
Anett Bergmann
Christoph Bieniakonski
Marius Busschulte
Stephan Ernst
Bora Kocdemir
Markus Legenbauer
Adam Maguire
Michael Oehmichen
Daniel Ostwald
Ulrich Stanka
Andreas Ulma
Niclas van der Lest
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 Energy Global GmbH and Co KG
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 EP3615263A1 publication Critical patent/EP3615263A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P6/00—Restoring or reconditioning objects
    • B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/70—Recycling
    • B22F10/73—Recycling of powder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
    • F01D11/005—Sealing means between non relatively rotating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/005—Repairing methods or devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/28—Arrangement of seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0887—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing the sealing effect being obtained by elastic deformation of the packing
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20—Direct sintering or melting
    • B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/001—Turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B23K26/342—Build-up welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/30—Application in turbines
    • F05D2220/31—Application in turbines in steam turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/80—Repairing, retrofitting or upgrading methods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/55—Seals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the invention relates to a repaired ring and a method for repairing such rings, which are used for sealing, especially in steam turbines for sealing a vapor space to an environment or steam rooms with different pressures.
  • SLM-compatible design / redesign of steam turbine parts U, I and L rings are today manufactured conventionally or by means of SLM and have long delivery times. They are used in various components (for example, valves, H-type turbines) to seal the steam space from the environment or steam rooms with different pressures.
  • the rings have an allowance that is customized during the revision ⁇ time.
  • FIGS. 1, 2 show a new ring
  • FIGS. 3 and 4 schematically show a repaired ring
  • FIGS. 5, 6 show an L and I ring.
  • the figures and the description represent only embodiments of the invention.
  • Figures 1, 2 show a new sealing ring 1 here preferably in a U-shape, but it can also have an I or L shape.
  • the new sealing ring 1 ⁇ has on both sides bearing surfaces 4, 7, which are formed on the inner edge 20 and rise from the surrounding surface 5.
  • FIG. 4 shows a cross-section of such a ring 1, which for example has a U-shape here.
  • the contact surfaces 4, 7 are processed, depending ⁇ but is applied only to an abutment surface 7 material.
  • the application of the material can be carried out by various application methods, so that a thickening takes place.
  • These may be, additive method in which the ring is immersed in a powder bed and stepwise by selective laser sintering or laser melting of the area is set up or through build-up welding, in particular powder deposit welding ⁇ is the sealing function restored.
  • the thickening 10 is preferably carried out by means of selective laser melt melting (SLM) or laser powder build-up welding (LMD) near the final contour.
  • SLM selective laser melt melting
  • LMD laser powder build-up welding
  • FIG. 3 shows a further variant.
  • ring 1 4 material is carried from ⁇ not only as according to figure, which is worn out, but he deliberately 16 ⁇ demonstrates a groove in which an insert ring 13 is inserted as thickening 10th
  • the insert ring 13 can be connected in the groove 16 in various ways: soldering, welding, mechanical clamping.
  • the thickening 10 on only one side 7 compensates for the removal on both sides 4, 7 or the bearing surface opposite the sealing ring surfaces.
  • Figure 5 shows an L-ring 11 with contact surfaces 20 ⁇ and Figure 6 shows an I-ring 111 with contact surface 21, 21 ⁇ .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Gasket Seals (AREA)

Abstract

By applying material (10, 13) on only one side (7) in the case of a revision, seal rings (1) can be easily rebuilt and reused.

Description

Reparierter Ring und Verfahren zur Reparatur eines Rings, der zur Abdichtung verwendet wird Repaired ring and method of repairing a ring used for sealing
Die Erfindung betrifft einen reparierten Ring und ein Verfahren zur Reparatur solcher Ringe, die zur Abdichtung, insbesondere bei Dampfturbinen zur Abdichtung eines Dampfraumes gegenüber einer Umgebung oder Dampfräumen mit unterschiedlichen Drücken eingesetzt werden. The invention relates to a repaired ring and a method for repairing such rings, which are used for sealing, especially in steam turbines for sealing a vapor space to an environment or steam rooms with different pressures.
SLM-gerechtes Design/Umkonstruktion von Dampfturbinenteilen U-, I- und L-Ringe werden heute konventionell oder mittels SLM gefertigt und haben lange Lieferzeiten. Sie werden in verschiedenen Komponenten (z.B. Ventile, H-Turbine) zur Ab- dichtung des Dampfraumes gegenüber Umgebung oder Dampfräume mit unterschiedlichen Drücken eingesetzt. SLM-compatible design / redesign of steam turbine parts U, I and L rings are today manufactured conventionally or by means of SLM and have long delivery times. They are used in various components (for example, valves, H-type turbines) to seal the steam space from the environment or steam rooms with different pressures.
Folgende Probleme sollen durch die Erfindung gelöst werden: a) Lieferzeiten sind länger als die Revisionszeiten. Dadurch müssen die Ringe unabhängig von der Befundung vorzeitig beschafft werden.  The following problems are to be solved by the invention: a) Delivery times are longer than the revision times. As a result, the rings must be procured prematurely, regardless of the findings.
b) Die Ringe haben ein Aufmaß, das während der Revisions¬ zeit individuell angepasst wird. b) The rings have an allowance that is customized during the revision ¬ time.
c) Die alten Ringe werden entsorgt. c) The old rings are disposed of.
d) Transportaufwand bei großen Ringen (z.B. 2m Durchmesser) e) Hohe Beschaffungs- und Fertigungskosten der Schmiede¬ teile. d) Transport costs for large rings (eg 2m diameter) e) High procurement and manufacturing costs of forging ¬ parts.
Heute werden ausschließlich Schmiedeteile verwendet, die lan- ge Beschaffungszeit haben. Die Lieferanten müssen qualifi¬ ziert werden. Für Revisionen müssen die Ringe im Vorfeld mit Aufmaß beschafft werden. Für die großen Ringe werden besondere Bearbeitungsmaschinen benötigt. Es ist daher Aufgabe der Erfindung o.g. Problem zu lösen. Today, only forgings are used that have a long lead time. Suppliers must be qualifi ed ¬. For revisions, the rings must be obtained in advance with an oversize. For the big rings special processing machines are needed. It is therefore an object of the invention to solve the above problem.
Die Aufgabe wird gelöst durch einen reparierten Ring gemäß Anspruch 1 und ein Verfahren gemäß Anspruch 2. In den Unteransprüchen sind weitere vorteilhafte Maßnahmen aufgelistet, die beliebig miteinander kombiniert werden kön¬ nen, um weitere Vorteile zu erzielen. The object is achieved by a repaired ring according to claim 1 and a method according to claim 2. In the dependent claims further advantageous measures are listed, which are combined with each other Kings ¬ nen to obtain further advantages.
Es zeigen die Figuren 1, 2 einen neuen Ring sowie die Figuren 3 und 4 schematisch einen reparierten Ring und Figuren 5, 6 einen L- und I-Ring. Die Figuren und die Beschreibung stellen nur Ausführungsbeispiele der Erfindung dar. 1, 2 show a new ring, and FIGS. 3 and 4 schematically show a repaired ring and FIGS. 5, 6 show an L and I ring. The figures and the description represent only embodiments of the invention.
Figuren 1, 2 zeigen einen neuen Dichtring 1 hier vorzugs- weise in einer U-Form, er kann aber auch eine I- oder L-Form haben . Figures 1, 2 show a new sealing ring 1 here preferably in a U-shape, but it can also have an I or L shape.
Der neue Dichtring 1 λ weist auf beiden Seiten Anlageflächen 4, 7 auf, die am Innenrand 20 ausgebildet sind und sich von der umliegenden Fläche 5 erheben. The new sealing ring 1 λ has on both sides bearing surfaces 4, 7, which are formed on the inner edge 20 and rise from the surrounding surface 5.
Im Betrieb kommt es zu Abnutzung mittels Reibung, Oxidation und/oder Erosion der Anlageflächen 4, 7 des Dichtrings 1 oder an den gegenüberliegenden Anlageflächen 4 und 7. During operation, wear occurs by means of friction, oxidation and / or erosion of the contact surfaces 4, 7 of the sealing ring 1 or on the opposite contact surfaces 4 and 7.
Im Revisionsfall werden diese gegenüberliegenden Anlageflä¬ chen von 4, 7 nachgearbeitet, wodurch die Dichtwirkung des alten Rings (1λ) nicht mehr gegeben ist und der Ring somit nicht mehr weiterverwendet werden kann. In the case of revision, these opposite Anlageflä ¬ surfaces of 4, 7 are refinished, whereby the sealing effect of the old ring (1 λ ) is no longer given and the ring thus can not be used.
Durch ein neues Reparaturkonzept kann die Dichtfläche des Rings aufgearbeitet werden. Damit ist die Anlage des Dicht¬ rings wieder gegeben. Thanks to a new repair concept, the sealing surface of the ring can be worked up. Thus, the system of Dicht ¬ ring is given again.
Die Figur 4 zeigt im Querschnitt einen solchen Ring 1, der hier beispielsweise eine U-Form aufweist. Erfindungsgemäß wurden die Anlageflächen 4, 7 bearbeitet, je¬ doch wird nur auf einer Anlagefläche 7 Material aufgetragen. FIG. 4 shows a cross-section of such a ring 1, which for example has a U-shape here. According to the invention the contact surfaces 4, 7 are processed, depending ¬ but is applied only to an abutment surface 7 material.
Die Auftragung des Materials kann durch verschiedene Auf- tragungssverfahren erfolgen, so dass eine Aufdickung 10 erfolgt . The application of the material can be carried out by various application methods, so that a thickening takes place.
Dies können additive Verfahren sein, bei dem der Ring in ein Pulverbett eingebettet wird und durch selektives Lasersintern oder Laserschmelzen schrittweise der Bereich aufgebaut wird oder durch Auftragschweißen, insbesondere Pulverauftrag¬ schweißen wird die Dichtungsfunktion wieder hergestellt. These may be, additive method in which the ring is immersed in a powder bed and stepwise by selective laser sintering or laser melting of the area is set up or through build-up welding, in particular powder deposit welding ¬ is the sealing function restored.
Die Aufdickung 10 erfolgt vorzugsweise mittels Selektivem La- serschmelzen (SLM) oder Laser-Pulverauftragschweißen (LMD) endkonturnah . The thickening 10 is preferably carried out by means of selective laser melt melting (SLM) or laser powder build-up welding (LMD) near the final contour.
Figur 3 zeigt eine weitere Variante. FIG. 3 shows a further variant.
Bei dem Ring 1 wird nicht nur wie gemäß Figur 4 Material ab¬ getragen, das abgenutzt ist, sondern bewusst eine Nut 16 er¬ zeugt, in der ein Einlegering 13 als Aufdickung 10 eingelegt wird . Der Einlegering 13 kann auf verschiedene Arten in der Nut 16 verbunden sein: Lötung, Schweißung, mechanische Verklammerung . In the ring 1 4 material is carried from ¬ not only as according to figure, which is worn out, but he deliberately 16 ¬ demonstrates a groove in which an insert ring 13 is inserted as thickening 10th The insert ring 13 can be connected in the groove 16 in various ways: soldering, welding, mechanical clamping.
Es müssen keine neuen Ringe beschafft oder bevorratet werden. Die alten Ringe werden nur im Befundfall aufbereitet. No new rings need to be procured or stored. The old rings are processed only in the case of findings.
Die Aufdickung 10 auf nur einer Seite 7 gleicht den Abtrag auf beiden Seiten 4, 7 bzw. der dem Dichtringsflächen gegenüberliegenden Anlagefläche aus. The thickening 10 on only one side 7 compensates for the removal on both sides 4, 7 or the bearing surface opposite the sealing ring surfaces.
Figur 5 zeigt einen L-Ring 11 mit Anlageflächen 20 λ und Figur 6 einen I-Ring 111 mit Anlagefläche 21, 21 λ. Figure 5 shows an L-ring 11 with contact surfaces 20 λ and Figure 6 shows an I-ring 111 with contact surface 21, 21 λ .

Claims

Patentansprüche claims
1. Reparierter Ring (1) zur Dichtung, 1. Repaired ring (1) for sealing,
insbesondere ein I-, L- oder U-Ring,  in particular an I, L or U ring,
der gegenüberliegende Anlageflächen (4, 7) aufweist, wobei der reparierte Ring (1) als neuer Ring (1λ) vorher imthe opposite contact surfaces (4, 7), wherein the repaired ring (1) as a new ring (1 λ ) previously in
Einsatz war und Use was and
durch Bearbeitung der Anlageflächen (4, 7) Material abge- tragen wurde,  material was removed by machining the contact surfaces (4, 7),
und bei dem an nur einer Anlagefläche (7) eine Aufdickung (10, 13) nach dem Materialabtrag vorhanden ist.  and in which at only one contact surface (7) has a thickening (10, 13) after the removal of material is present.
2. Verfahren zur Reparatur eines Rings, 2. Method of Repairing a Ring,
insbesondere in einer I-, L- oder U-Form,  especially in an I, L or U form,
bei dem an gegenüberliegenden, abgenutzten Anlageflächen (4, 7) Material abgetragen wird und  in which at opposite, worn contact surfaces (4, 7) material is removed and
nur auf einer Seite der Anlagefläche (7) Material dort wie- der ersetzt wird.  only on one side of the contact surface (7) material is replaced there again.
3. Reparierter Ring oder Verfahren nach Anspruch 1 oder 2, bei dem eine Aufschweißung (10) als Aufdickung vorhanden ist, 3. Repaired ring or method according to claim 1 or 2, wherein a weld (10) is present as a thickening,
insbesondere wobei der reparierte Ring (1) in der  in particular wherein the repaired ring (1) in the
Aufdickung (10) ein anderes Material und/oder eine andere Mikrostruktur aufweist.  Thickening (10) has a different material and / or a different microstructure.
4. Reparierter Ring (1) oder Verfahren nach Anspruch 1, 2, oder 3, 4. Repaired ring (1) or method according to claim 1, 2 or 3,
bei dem die Aufdickung durch einen Einlegering (13) erfolgt,  in which the thickening takes place through a insert ring (13),
insbesondere in einer Vertiefung. especially in a depression.
5. Reparierter Ring oder Verfahren nach Anspruch 1, 2 oder 3, 5. Repaired ring or method according to claim 1, 2 or 3,
bei dem der Ring (1) metallisch ist.  in which the ring (1) is metallic.
6. Reparierter Ring oder Verfahren nach einem oder mehreren der Ansprüche 1, 2, 3, 4 oder 5, 6. Repaired ring or method according to one or more of claims 1, 2, 3, 4 or 5,
bei dem der ursprüngliche Ring (1λ) eine Schmiedeteil dar¬ stellt. in which the original ring (1 λ ) is a forged part represents ¬ .
EP18723421.6A 2017-06-02 2018-04-20 Repaired ring and method for repairing a ring which is used for sealing purposes Pending EP3615263A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017209364.1A DE102017209364A1 (en) 2017-06-02 2017-06-02 Repaired ring and method of repairing a ring used for sealing
PCT/EP2018/060139 WO2018219555A1 (en) 2017-06-02 2018-04-20 Repaired ring and method for repairing a ring which is used for sealing purposes

Publications (1)

Publication Number Publication Date
EP3615263A1 true EP3615263A1 (en) 2020-03-04

Family

ID=62143112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18723421.6A Pending EP3615263A1 (en) 2017-06-02 2018-04-20 Repaired ring and method for repairing a ring which is used for sealing purposes

Country Status (4)

Country Link
US (1) US11286777B2 (en)
EP (1) EP3615263A1 (en)
DE (1) DE102017209364A1 (en)
WO (1) WO2018219555A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877730A (en) 1974-02-12 1975-04-15 Atomic Energy Commission Method of repairing a flange face of a clamped-flange sealing-ring type pipe coupling
EP0330769B1 (en) * 1988-03-01 1992-12-30 Cooper Industries, Inc. Tubular joint with seal, method for repairing seal, and repair part insert
US4924581A (en) * 1988-11-22 1990-05-15 Techniair, Inc. Turbine air seal repair process
JP2004202544A (en) * 2002-12-25 2004-07-22 Daido Steel Co Ltd Method for producing polygonal annular member having deformed cross section
US8176740B2 (en) * 2008-07-15 2012-05-15 General Electric Company Method of refurbishing a seal land on a turbomachine transition piece and a refurbished transition piece
GB0907278D0 (en) 2009-04-29 2009-06-10 Rolls Royce Plc A seal arrangement and a method of repairing a seal arrangement
DE102011087207A1 (en) 2011-11-28 2013-05-29 Aktiebolaget Skf Labyrinth seal with different wear labyrinth rings
US20160067825A1 (en) 2014-09-10 2016-03-10 Caterpillar Inc. Laser cladding mechanical face seals

Also Published As

Publication number Publication date
WO2018219555A1 (en) 2018-12-06
US20200200010A1 (en) 2020-06-25
US11286777B2 (en) 2022-03-29
DE102017209364A1 (en) 2018-12-06

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