EP0165408A1 - Vorrichtung zur Herstellung einer Metallschicht auf den Gleitschichten eines Turbinenläufers - Google Patents

Vorrichtung zur Herstellung einer Metallschicht auf den Gleitschichten eines Turbinenläufers Download PDF

Info

Publication number
EP0165408A1
EP0165408A1 EP85104889A EP85104889A EP0165408A1 EP 0165408 A1 EP0165408 A1 EP 0165408A1 EP 85104889 A EP85104889 A EP 85104889A EP 85104889 A EP85104889 A EP 85104889A EP 0165408 A1 EP0165408 A1 EP 0165408A1
Authority
EP
European Patent Office
Prior art keywords
axis
electrolyte
anodes
vat
tank
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.)
Granted
Application number
EP85104889A
Other languages
English (en)
French (fr)
Other versions
EP0165408B1 (de
Inventor
André Coulon
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.)
Alstom SA
Original Assignee
Alstom SA
Alsthom Atlantique SA
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 Alstom SA, Alsthom Atlantique SA filed Critical Alstom SA
Publication of EP0165408A1 publication Critical patent/EP0165408A1/de
Application granted granted Critical
Publication of EP0165408B1 publication Critical patent/EP0165408B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/04—Tubes; Rings; Hollow bodies

Definitions

  • the present invention relates to a device for carrying out a metallic deposit on the friction parts of a turbine rotor.
  • Turbine rotors operating at high temperatures must be made of creep-resistant steel.
  • a metallic coating (preferably chromium) is deposited electrolytically on the friction parts of the rotor.
  • the device for carrying out the metal deposition makes it possible to obtain very low coefficients of friction thanks to the regularity of the deposition carried out.
  • Document EU-A-37033 discloses a device for depositing a metal coating on the hub of a rotor disc, said device comprising a tank with vertical axis 00 'consisting of a cylindrical part terminated by a conical part, said tank being filled with electrolyte, first means for supplying the tank with electrolyte and disposed upwards of said tank, second means for discharging the electrolyte situated at the bottom of the tank, third means for regenerating and circulating the electrolyte located between the second means and the first means, fourth means for supporting a curtain of metal anodes to be deposited and for driving the electrolyte in rotation about the axis 00 ', fifth means for bringing a current of polarity given to the anode curtain.
  • the electrolyte is driven centrifugally by the fourth means to come and settle on the hub.
  • the electrolyte must be driven in a centripetal manner to come and settle on the floating parts of the rotor located on the axis 00 '.
  • the fourth means consist of two cylindrical half-shells of axis 00 'each comprising an armature in the form of a semicircle .on which the anodes are fixed parallel to the axis 00 ', said anodes being surrounded externally by hollow tubes parallel to 00' connected together by hollow pipes also in the form of a semicircle and supplied with compressed gas, the pipes and the reinforcements being secured by insulators, the tubes and pipes being provided with nozzles ejecting the compressed gas in a horizontal direction making an angle close to 45 ° with the horizontal direction joining the nozzle considered to the axis 00 '.
  • the current is pulsed, which improves the homogeneity of the deposited chromium as well as its adhesion.
  • the device according to the invention (see FIG. 1) comprises a tank 1 comprising a cylindrical part 2 with a vertical axis 00 'surmounting a conical part 3 with the same axis. At the bottom of the conical part 3 is disposed a quick-drain evacuation system 4.
  • the tank 1 is provided with a cover 9 comprising a gas outlet pipe 10 provided with a ventilation and gas treatment system 11.
  • the rotor 12 is suspended by its upper end and its lower end comprising the rubbing parts 13 to be coated is located in the tank 1.
  • the cover 9 is in two parts and has a central opening 14 so as to be able to grip the rotor 12.
  • the rotor 12 has its axis coincident with the axis 00 '.
  • the half-rings have at one end a hinge 19 and at the other a locking means 2 for locking them together (see Figure 5).
  • Each half-shell 16 also comprises parallel tubes 21 to the axis 00 'joined by conduits 22 forming half-rings at the lower and upper part of the half-shells.
  • the upper conduits 22 surround the armatures 20 and are connected to them by ceramic insulators 23.
  • the tubes 21 and the lines 22 are hollow and communicate between them.
  • One of the pipes 22 is provided with an inlet 24 for compressed gas.
  • the upper pipes 22 on the one hand and the lower pipes on the other hand are connected by a flexible sleeve 25 (see FIG. 3).
  • the tubes 21 are provided with nozzles 26 sending compressed gas in a horizontal direction making an angle substantially equal to 45 ° with the direction connecting the nozzle to the axis 00 '. -
  • the pipes 22 are also provided with nozzles 27. These nozzles 27 send compressed gas in a horizontal direction making an angle substantially equal to 45 ° with the direction connecting the nozzle in question to the axis 00 '.
  • the sheath 15 is fixed to the tank 1 by spokes 28 (see FIG. 5).
  • the entire sheath accepts the axis 00 'as the axis of symmetry.
  • the anodes 17 are supplied with current by a current supply 29 and are made of metal to be deposited.
  • a temperature probe 30 is placed inside the tank 1 and is connected to a generator 31 which sends a current into an electric heating resistor 32 located at the bottom of the tank 1 when the temperature of the electrolyte deviates from 1 ° C compared to the set temperature.
  • a regeneration circuit 33 of the electrolyte bath Between the electrolyte evacuation system 4 and the supply inlets 7 is arranged a regeneration circuit 33 of the electrolyte bath, a pump and valve system 34 for injecting either continuously or intermittently of the regenerated electrolyte.
  • the anodes are chosen from this metal and the electrolyte is a conventional solution of chromic acid.
  • Certain sodium or calcium hydroxides can be added to it to form tetrachromate salts.
  • Chromic acid can be replaced by trivalent chromium salts, which simplifies the ventilation system.
  • the electrolyte tank After installing the rotor, the electrolyte tank is filled. Thanks to the orientation of the air injections and the electrolyte, the bath is driven in a rotary movement of axis 00 '.
  • an alternating current for example a pulse of one second every twenty seconds alternately positive and negative of amplitude lower than the intensity of the direct current, one obtains a homogeneous deposit of trivalent chromium, of compatible hardness with the objectives, while improving performance and grip.
  • the chromium deposit will be between 150 and 200 m after rectification. Finally, a degassing oven treatment (180 - 210 ° C) ends the operating range.
  • the rubbing parts to be coated can be either bristles of bearings as in FIG. 1 or bristles of stops (FIG. 6). In the latter case as in the case of Figure 1 the anodes are arranged opposite the surfaces to be coated.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Sliding-Contact Bearings (AREA)
EP85104889A 1984-04-26 1985-04-23 Vorrichtung zur Herstellung einer Metallschicht auf den Gleitschichten eines Turbinenläufers Expired EP0165408B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8406589 1984-04-26
FR8406589A FR2563540B1 (fr) 1984-04-26 1984-04-26 Dispositif pour effectuer un depot metallique sur les parties frottantes d'un rotor de turbine

Publications (2)

Publication Number Publication Date
EP0165408A1 true EP0165408A1 (de) 1985-12-27
EP0165408B1 EP0165408B1 (de) 1988-08-31

Family

ID=9303523

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104889A Expired EP0165408B1 (de) 1984-04-26 1985-04-23 Vorrichtung zur Herstellung einer Metallschicht auf den Gleitschichten eines Turbinenläufers

Country Status (8)

Country Link
US (1) US4584081A (de)
EP (1) EP0165408B1 (de)
JP (1) JPS60234996A (de)
AT (1) ATE36876T1 (de)
CS (1) CS275930B6 (de)
DE (1) DE3564707D1 (de)
FR (1) FR2563540B1 (de)
ZA (1) ZA853141B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849317A (en) * 1986-06-30 1989-07-18 Fujitsu Limited Magnetic brush developer for electrophotography

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578859B1 (fr) * 1985-03-12 1989-09-08 Commissariat Energie Atomique Appareillage et installation de realisation d'un depot metallique electrolytique d'epaisseur constante.
EP0578518B1 (de) * 1992-06-05 1998-09-30 Gec Alsthom Electromecanique Sa Verfahren zur Herstellung eines Einsatzes auf einem zu beschichtenden Formkörper aus Stahl oder aus Titanlegierung
FR2696760B1 (fr) * 1992-10-09 1994-11-04 Alsthom Gec Revêtement pour parties frottantes par rotation d'une pièce en acier matensitique.
GB9303853D0 (en) * 1993-02-25 1993-04-21 Baj Coatings Ltd Rotor blades
FR2777914B1 (fr) * 1998-04-28 2000-07-13 Traitements De Surface Et Meca Dispositif,procede et installation pour le depot par voie electrolytique sur des pieces de grandes dimmensions
DE102012103846A1 (de) * 2012-05-02 2013-11-07 Ipt International Plating Technologies Gmbh Verstellbare Anode

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037033A1 (de) * 1980-03-27 1981-10-07 ALSTHOM-ATLANTIQUE Société anonyme dite: Verfahren und Vorrichtung zum Abscheiden von Metallen auf eine durch das Zentralteil eines Werkstückes grosser Dimensionen hindurchgehende zylindrische Bohrung mit grossem Durchmesser

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259049A (en) * 1962-12-14 1966-07-05 V & A Plating Supplies Inc Gas agitating device
US3503856A (en) * 1968-01-30 1970-03-31 Rotary Plates Ltd Process for controlling electrodeposition
FR2462490A1 (fr) * 1979-08-03 1981-02-13 Centre Techn Ind Mecanique Dispositif de revetement electrolytique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037033A1 (de) * 1980-03-27 1981-10-07 ALSTHOM-ATLANTIQUE Société anonyme dite: Verfahren und Vorrichtung zum Abscheiden von Metallen auf eine durch das Zentralteil eines Werkstückes grosser Dimensionen hindurchgehende zylindrische Bohrung mit grossem Durchmesser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849317A (en) * 1986-06-30 1989-07-18 Fujitsu Limited Magnetic brush developer for electrophotography

Also Published As

Publication number Publication date
DE3564707D1 (en) 1988-10-06
ATE36876T1 (de) 1988-09-15
JPS60234996A (ja) 1985-11-21
US4584081A (en) 1986-04-22
FR2563540A1 (fr) 1985-10-31
EP0165408B1 (de) 1988-08-31
ZA853141B (en) 1985-12-24
CS275930B6 (en) 1992-03-18
JPH0514030B2 (de) 1993-02-24
FR2563540B1 (fr) 1989-05-05

Similar Documents

Publication Publication Date Title
EP0165408B1 (de) Vorrichtung zur Herstellung einer Metallschicht auf den Gleitschichten eines Turbinenläufers
EP0462898B1 (de) Verfahren und Einrichtung zum Schmelzen einer Ladung im Ofen
US1927162A (en) Electroplating
EP0803287A1 (de) Verfahren und Vorrichtung zur Verminderung oder Verhinderung der Ablagerung von festen Teilchen auf die innere Wand einer Rohrleitung
EP2064362B1 (de) Vorrichtung zur führung einer schnur durch ein flüssigkeitsbad
EP0037033B1 (de) Verfahren und Vorrichtung zum Abscheiden von Metallen auf eine durch das Zentralteil eines Werkstückes grosser Dimensionen hindurchgehende zylindrische Bohrung mit grossem Durchmesser
FR2507213A1 (fr) Procede et appareil pour le revetement simultane de l'interieur et de l'exterieur d'un recipient metallique
US4176034A (en) Apparatus for the electrodeposition of aluminum
US2498128A (en) Apparatus for electroplating workpieces
EP0018266B1 (de) Zentrifugalpumpe für Flüssigkeitsumlauf
US6630060B1 (en) Device for carrying out an electro-chemical treatment
FI84187B (fi) Cell foer kontinuerlig electrolytisk belaeggning av staenger eller dylika.
FR2473926A1 (fr) Appareil pour souder l'enroulement d'une machine electrique a son collecteur
GB2285592A (en) Pipe spray coating apparatus
EP3215280A1 (de) System und verfahren zur lokalen oberflächenbehandlung
CN214371403U (zh) 一种耐磨抗蚀金属产品的热镀锌烘干装置
JPS6213597A (ja) 物品の電解表面処理装置
US4183320A (en) Apparatus for nickel plating
KR200188821Y1 (ko) 배럴을 이용한 전착도장장치
EP3530776B1 (de) Anlage und verfahren zur lokalisierten oberflächenbehandlung von industriellen werkstücken
SU527210A1 (ru) Установка дл нанесени термопластичных материалов
FR2796400A1 (fr) Procede et appareil pour le traitement electrochimique de pieces avec extraction separee des produits de decomposition de l'eau au niveau electrodes
SU1293245A1 (ru) Устройство дл электролитического нанесени покрытий
FR2467469A1 (fr) Lame de raclage, utilisable dans des secheurs par couche mince
FR3048704A1 (fr) Dispositif et procede ameliores de depot metallique par galvanoplastie, de preference pour le traitement de pieces de turbomachines d'aeronef

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

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

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

Owner name: ALSTHOM

17P Request for examination filed

Effective date: 19860626

17Q First examination report despatched

Effective date: 19870723

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 36876

Country of ref document: AT

Date of ref document: 19880915

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3564707

Country of ref document: DE

Date of ref document: 19881006

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930122

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19930218

Year of fee payment: 9

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19930430

Year of fee payment: 9

Ref country code: NL

Payment date: 19930430

Year of fee payment: 9

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19940423

Ref country code: AT

Effective date: 19940423

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940424

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19941101

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
EUG Se: european patent has lapsed

Ref document number: 85104889.2

Effective date: 19941110

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19960205

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970314

Year of fee payment: 13

Ref country code: FR

Payment date: 19970314

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19970320

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19970326

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19970430

BERE Be: lapsed

Owner name: ALSTHOM

Effective date: 19970430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980423

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19980430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980423

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990202

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST