GB2257395B - Etching solution and method of removing metallic hot gas corrosion protective layers and hot gas reaction coatings from engine blades - Google Patents

Etching solution and method of removing metallic hot gas corrosion protective layers and hot gas reaction coatings from engine blades

Info

Publication number
GB2257395B
GB2257395B GB9213053A GB9213053A GB2257395B GB 2257395 B GB2257395 B GB 2257395B GB 9213053 A GB9213053 A GB 9213053A GB 9213053 A GB9213053 A GB 9213053A GB 2257395 B GB2257395 B GB 2257395B
Authority
GB
United Kingdom
Prior art keywords
hot gas
etching solution
protective layers
corrosion protective
removing metallic
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.)
Expired - Fee Related
Application number
GB9213053A
Other languages
English (en)
Other versions
GB9213053D0 (en
GB2257395A (en
Inventor
Rolf-Joerg Dunker
Holger Polanetzki
Martin Thoma
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
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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Publication of GB9213053D0 publication Critical patent/GB9213053D0/en
Publication of GB2257395A publication Critical patent/GB2257395A/en
Application granted granted Critical
Publication of GB2257395B publication Critical patent/GB2257395B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/002—Cleaning of turbomachines
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
GB9213053A 1991-06-20 1992-06-19 Etching solution and method of removing metallic hot gas corrosion protective layers and hot gas reaction coatings from engine blades Expired - Fee Related GB2257395B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4120305A DE4120305C1 (enExample) 1991-06-20 1991-06-20

Publications (3)

Publication Number Publication Date
GB9213053D0 GB9213053D0 (en) 1992-08-05
GB2257395A GB2257395A (en) 1993-01-13
GB2257395B true GB2257395B (en) 1995-11-01

Family

ID=6434325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9213053A Expired - Fee Related GB2257395B (en) 1991-06-20 1992-06-19 Etching solution and method of removing metallic hot gas corrosion protective layers and hot gas reaction coatings from engine blades

Country Status (4)

Country Link
US (1) US5248381A (enExample)
DE (1) DE4120305C1 (enExample)
GB (1) GB2257395B (enExample)
IT (1) IT1258963B (enExample)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5695659A (en) * 1995-11-27 1997-12-09 United Technologies Corporation Process for removing a protective coating from a surface of an airfoil
GB9814075D0 (en) * 1998-06-29 1998-08-26 Ge Aircraft Engine Services Li Method of stripping a coating from an aircraft engine part
US6355116B1 (en) 2000-03-24 2002-03-12 General Electric Company Method for renewing diffusion coatings on superalloy substrates
US6454870B1 (en) 2001-11-26 2002-09-24 General Electric Co. Chemical removal of a chromium oxide coating from an article
US6699101B2 (en) * 2001-11-29 2004-03-02 General Electric Company Method for removing a damaged substrate region beneath a coating
US6878215B1 (en) 2004-05-27 2005-04-12 General Electric Company Chemical removal of a metal oxide coating from a superalloy article
US20080264897A1 (en) * 2007-04-30 2008-10-30 Canan Uslu Hardwicke Turbine component pattern forming method
US10189100B2 (en) 2008-07-29 2019-01-29 Pratt & Whitney Canada Corp. Method for wire electro-discharge machining a part
US8925201B2 (en) * 2009-06-29 2015-01-06 Pratt & Whitney Canada Corp. Method and apparatus for providing rotor discs
US20110164981A1 (en) * 2010-01-04 2011-07-07 General Electric Company Patterned turbomachine component and method of forming a pattern on a turbomachine component
US9926517B2 (en) 2013-12-09 2018-03-27 General Electric Company Cleaning solution and methods of cleaning a turbine engine
US9957066B2 (en) 2015-02-13 2018-05-01 General Electric Company Detergent delivery methods and systems for turbine engines
BR102016021259B1 (pt) 2015-10-05 2022-06-14 General Electric Company Método e soluções de limpeza de um motor de turbina e composição de reagente
US10316414B2 (en) * 2016-06-08 2019-06-11 United Technologies Corporation Removing material with nitric acid and hydrogen peroxide solution

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB357387A (en) * 1929-10-09 1931-09-24 Ici Ltd Improvements in or relating to the pickling of metals and the like processes
GB370380A (en) * 1929-10-04 1932-04-07 Ici Ltd Improvements in or relating to the pickling of metals, and the like processes
GB864027A (en) * 1956-06-20 1961-03-29 Albright & Wilson Mfg Ltd Improvements in or relating to corrosion inhibitors
US3053719A (en) * 1958-12-08 1962-09-11 Purex Corp Ltd Composition and process for etching magnesium
GB1033539A (en) * 1962-04-20 1966-06-22 Pfaudler Permutit Inc Surface cleaning method and composition
GB1157038A (en) * 1967-09-19 1969-07-02 Lancy Lab Pickling Solutions for Removing Copper Oxides from Copper Containing Workpieces
GB1162230A (en) * 1965-10-30 1969-08-20 Nikex Nehezipari Kulkere Chemical Compositions and Method for the Removale of Beer Stone
GB1167293A (en) * 1967-05-22 1969-10-15 Diversity Dev Ltd Compositions for Treating Aluminium Surfaces
GB1365227A (en) * 1972-05-30 1974-08-29 Halliburton Co Composition and method for removing copper containing iron oxide scales from ferrous metals
US3988254A (en) * 1973-06-14 1976-10-26 Fuji Photo Film Co., Ltd. De-smutting agent

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1521806A1 (de) * 1966-11-25 1970-08-20 Horst Arendt Verfahren zur Entmetallisierung
US4302246A (en) * 1980-01-03 1981-11-24 Enthone, Incorporated Solution and method for selectively stripping alloys containing nickel with gold, phosphorous or chromium from stainless steel and related nickel base alloys
DE3048083C2 (de) * 1980-12-19 1983-09-29 Ludwig 8900 Augsburg Fahrmbacher-Lutz Verfahren zur chemischen Entfernung von Oxidschichten von Gegenständen aus Titan oder Titanlegierungen
US4339282A (en) * 1981-06-03 1982-07-13 United Technologies Corporation Method and composition for removing aluminide coatings from nickel superalloys
US4425185A (en) * 1982-03-18 1984-01-10 United Technologies Corporation Method and composition for removing nickel aluminide coatings from nickel superalloys
US4563239A (en) * 1984-10-16 1986-01-07 United Technologies Corporation Chemical milling using an inert particulate and moving vessel
CH674851A5 (enExample) * 1987-12-01 1990-07-31 Bbc Brown Boveri & Cie

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB370380A (en) * 1929-10-04 1932-04-07 Ici Ltd Improvements in or relating to the pickling of metals, and the like processes
GB357387A (en) * 1929-10-09 1931-09-24 Ici Ltd Improvements in or relating to the pickling of metals and the like processes
GB864027A (en) * 1956-06-20 1961-03-29 Albright & Wilson Mfg Ltd Improvements in or relating to corrosion inhibitors
US3053719A (en) * 1958-12-08 1962-09-11 Purex Corp Ltd Composition and process for etching magnesium
GB1033539A (en) * 1962-04-20 1966-06-22 Pfaudler Permutit Inc Surface cleaning method and composition
GB1162230A (en) * 1965-10-30 1969-08-20 Nikex Nehezipari Kulkere Chemical Compositions and Method for the Removale of Beer Stone
GB1167293A (en) * 1967-05-22 1969-10-15 Diversity Dev Ltd Compositions for Treating Aluminium Surfaces
GB1157038A (en) * 1967-09-19 1969-07-02 Lancy Lab Pickling Solutions for Removing Copper Oxides from Copper Containing Workpieces
GB1365227A (en) * 1972-05-30 1974-08-29 Halliburton Co Composition and method for removing copper containing iron oxide scales from ferrous metals
US3988254A (en) * 1973-06-14 1976-10-26 Fuji Photo Film Co., Ltd. De-smutting agent

Also Published As

Publication number Publication date
US5248381A (en) 1993-09-28
ITMI921421A0 (it) 1992-06-10
GB9213053D0 (en) 1992-08-05
ITMI921421A1 (it) 1993-12-10
GB2257395A (en) 1993-01-13
IT1258963B (it) 1996-03-11
DE4120305C1 (enExample) 1992-08-27

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050619