EP0375556B1 - Ventouse de traitement électrolytique d'une surface - Google Patents

Ventouse de traitement électrolytique d'une surface Download PDF

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Publication number
EP0375556B1
EP0375556B1 EP89403603A EP89403603A EP0375556B1 EP 0375556 B1 EP0375556 B1 EP 0375556B1 EP 89403603 A EP89403603 A EP 89403603A EP 89403603 A EP89403603 A EP 89403603A EP 0375556 B1 EP0375556 B1 EP 0375556B1
Authority
EP
European Patent Office
Prior art keywords
chamber
chambers
electrolyte
suction cup
flow
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 - Lifetime
Application number
EP89403603A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0375556A1 (fr
Inventor
André Charamathieu
Gérard Gouaillardou
Jean-Pierre Cizel
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.)
Orano DS Demantelement et Services SA
Original Assignee
STMI Societe des Techniques en Milieu Ionisant SPL
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 STMI Societe des Techniques en Milieu Ionisant SPL filed Critical STMI Societe des Techniques en Milieu Ionisant SPL
Publication of EP0375556A1 publication Critical patent/EP0375556A1/fr
Application granted granted Critical
Publication of EP0375556B1 publication Critical patent/EP0375556B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/08—Electroplating with moving electrolyte e.g. jet electroplating

Definitions

  • the invention relates to a suction cup for electrolytic treatment of a surface and can be used in general for all treatments which involve the circulation of an electrolyte current between the surface and an electrode at a different potential. from that of the surface and at a short distance, such as electropolishing, electrodecontamination, electrodepalting, electrodeposition or anodic treatment.
  • suction cups already known which essentially comprise a generally electrically insulating carcass and a seal with a closed contour pressed against the surface.
  • the carcass is hollow and its cavity contains two chambers which are delimited by the electrode.
  • the electrolyte circulates in the rear intake chamber then passes through the electrode through the holes made in it, passes into the front chamber where it is brought into contact with the surface to be treated, which constitutes a wall of this front chamber , and is then sucked by a pipe which crosses the carcass.
  • the flow is generally perpendicular to the surface in the rear intake chamber and the front chamber.
  • the object of the invention is to overcome these drawbacks by means of an electrolytic treatment suction cup whose geometrical conformation makes it possible to obtain a uniform flow in the circulation chamber.
  • the new electrolytic treatment suction cup comprises a generally electrically insulating carcass, partially delimiting an electrolyte cavity, the carcass being provided with an electrode installed in the cavity, with two electrolyte pipe connections opening out in front of two ends of the cavity, an elastic joint with a closed contour partially delimiting the cavity and intended to be pressed against the surface, the electrode then coming in front of the surface at a uniform distance from the latter and separating the cavity into an electrolyte circulation chamber located between the electrode and the surface, an electrolyte intake chamber located between the circulation chamber and one of the connections and an electrolyte suction chamber located between the circulation chamber and the other connection, the suction cup being characterized in that the electrode is continuous and the intake and suction chambers are formed cha cune of a circulation equalization chamber communicating with the circulation chamber by a respective slot, the slots being located on two opposite sides of the circulation chamber, the distribution chambers comprising a part adjacent to the slot where the electrolyte flows against the current with respect to its flow in the circulation chamber, as well as
  • the distribution chambers may be made for the distribution chambers to shrink towards the circulation equalization chambers in a direction perpendicular to the direction of extension of the slots, than the equalization chambers circulation widens towards the distribution chambers in a direction perpendicular to the direction of the slots, that they comprise a part adjacent to the distribution chambers where the electrolyte flows in the same direction as in the circulation chamber, or still that the circulation chambers are composed of a recess adjacent to the distribution chambers and of a complementary part extending between the distribution chambers and the slots.
  • the parts of the suction cup and in particular the electrode can be flat or arcuate according to the curvature of the surface to be treated.
  • the suction cup consists of a carcass 1 of an electrically insulating material, such as plastic, and which is crossed by an electrode 2 which ends in an electrode plate 3 which is flat and continuous.
  • the electrode 2 opens out of the carcass 1 opposite the surface S to be treated by a cable 4 supplied with direct current by a generator and a rectifier not shown.
  • the carcass 1 is further provided with sockets for gripping the suction cup and its pressing on the surface S, here of opposite appendages 5, and of a closed contour seal 6 of elastic material which is applied to the surface S to define a sealed volume.
  • the seal 6 advantageously comprises an inflatable air chamber 7 in its part adjacent to the surface S.
  • the carcass 1 is hollow and defines with the seal 6 and the surface S a sealed electrolyte circulation cavity when the suction cup is in the working position.
  • the electrode plate 3 extends inside the cavity and delimits there an electrolyte circulation chamber 8 with the surface S.
  • the rest of the cavity forms an intake chamber 9a and a suction chamber 9b of the electrolyte, similar and symmetrical chambers, as well as the rest of the suction cup, relative to a plane P per pendulum to the surface S and to the plane of Figure 1.
  • Each of these chambers can be broken down into a distribution chamber 10 and a circulation equalization chamber 11.
  • the distribution chamber 10 extends between a connection 12 intended for a flexible hose 13 for admission or aspiration of the electrolyte and the circulation equalization chamber 11.
  • C denotes the direction of circulation of the electrolyte in the circulation chamber 8
  • the distribution chamber 10 has a variable rectangular section whose dimension r1 in a direction parallel to the direction of circulation C decreases progressively from the connection 12 to the circulation equalization chamber 11 while its orthogonal dimension r2 (figure 2) increases on the contrary in the same direction.
  • This arrangement allows a distribution in the best conditions of the electrolyte from the flexible pipe 13 with circular section and in a direction perpendicular to the surface S towards the circulation equalization chamber 11 where the flow is generally parallel to the surface S and whose section is a very elongated rectangle.
  • This circulation equalization chamber 11 extends between the distribution chamber 10 and the circulation chamber 8.
  • its shape is quite complicated and a zone 14 adjacent to the circulation chamber 8 can be distinguished.
  • the flow of the electrolyte takes place parallel to the direction of circulation C, but against the current in zone 14 and in the same direction in the other zone 15.
  • This arrangement is obtained by a baffle plate 16 parallel to the plate 3 of the electrode 2 and which cuts almost entirely the circulation equalization chamber 11.
  • the zones 14 and 15 communicate by an elongated slot 17 close to the median plane P while the circulation equalization chamber 11 and the circulation chamber 8 communicate by another slot 18 delimited by the plate 3 and the seal 6.
  • the zone 14 adjacent to the circulation chamber 8 has a uniform section while the other zone 15 has a section which widens appreciably (as regards the thickness r3 perpendicular to r2) near the connection with the distribution chamber 10 at the location of an oblique surface 19.
  • Figure 6 more fully shows the embodiment and shows in particular that the seal 7 is here rectangular in outline; the slots 17 and 18 are mutually parallel and extend perpendicular to the direction of circulation C, parallel to the dimension r2 of the distribution chambers 10, up to the edges of the joint 6.
  • an electrolyte circulation is created, advantageously under vacuum, at about half an atmosphere, in order to limit the leaks in hydraulic circuit failure.
  • Overpressure or equipressure circulation is possible.
  • Technopal brand hoses or all hoses of similar characteristics can be favorably used for this pressure value.
  • the intake and suction chambers 9a and 9b as described guarantee a gradual passage between the flow conditions in the pipes 13 and those in the circulation chamber 8, so that the flow speed is uniform in this the latter as well along the direction defined by the direction of circulation C as in the perpendicular direction thanks in particular to the enlargement of the distribution chambers 10 along the dimension r2.
  • the renewal of the electrolyte over the entire portion of the surface S treated and circumscribed by the seal 6 is therefore guaranteed, which makes it possible to apply significantly higher current densities without risking damaging the surface S by modifying the composition. chemical of the electrolyte in places where the renewal would be insufficient. Uniform treatment is also ensured.
  • FIG. 3 shows that the suction cup, the essential parts of which were flat in FIGS. 1 and 2, can be provided for surfaces S ′ of uniform curvature.
  • the electrode 2 ′ then has an arcuate plate 3 ′ with a consequent radius of curvature; the baffle plates 16 ′ and the walls of the circulation equalization chambers are also arched accordingly, as well as the joint.
  • FIG. 3 also shows that the suction cups can be correctly pressed onto the surface S or S ′ by an apparatus - described in more detail in French patent 2 607 421 - formed by a longitudinal frame 27 carrying two jacks 28, the rod of each of which grips one of the appendages 5 and the plate on the surface.
  • the frame 27 also carries four tabs 29 at the front, rear, left and right of the suction cup which carry, by a pad 30, on the surface S or S ′.
  • a handle M of which only the end is shown then makes it possible to move the device. Plating can be ensured by any equivalent system and in particular by a remote operator arm.
  • FIGS. 4 and 5 show that it is possible without inconvenience to build suction cups according to the invention in the form of possibly very elongated rectangles.
  • FIG. 4 represents a suction cup which can be used in particular for the treatment of a strip or a metal tube 31 in continuous movement in a direction A perpendicular to the direction of circulation of the electrolyte C; the suction cup is very little extended in direction A, which is admissible since high current densities, causing rapid machining, can be applied without disadvantage.
  • suction cups the width of which is, on the contrary, substantially greater than the length, as shown in FIG. 5, thanks to the capacities for uniformity of flow of the distribution chambers 10.

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)
  • Electrolytic Production Of Metals (AREA)
EP89403603A 1988-12-23 1989-12-21 Ventouse de traitement électrolytique d'une surface Expired - Lifetime EP0375556B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817115 1988-12-23
FR8817115A FR2641003B1 (es) 1988-12-23 1988-12-23

Publications (2)

Publication Number Publication Date
EP0375556A1 EP0375556A1 (fr) 1990-06-27
EP0375556B1 true EP0375556B1 (fr) 1993-03-10

Family

ID=9373373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89403603A Expired - Lifetime EP0375556B1 (fr) 1988-12-23 1989-12-21 Ventouse de traitement électrolytique d'une surface

Country Status (6)

Country Link
US (1) US4986889A (es)
EP (1) EP0375556B1 (es)
JP (1) JPH02221400A (es)
DE (2) DE375556T1 (es)
ES (1) ES2015859T3 (es)
FR (1) FR2641003B1 (es)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8465485B2 (en) 2003-03-27 2013-06-18 Terumo Kabushiki Kaisha Energy based devices and methods for treatment of patent foramen ovale
US9468437B2 (en) 1996-08-22 2016-10-18 The Trustees Of Columbia University In The City Of New York Endovascular flexible stapling device

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1311147B1 (it) * 1999-11-04 2002-03-04 Edk Res Ag Macchina per pulizia localizzata con cella, elettrolitica e/o adultrasuoni, di decapaggio e/o lucidatura
US7293562B2 (en) * 2003-03-27 2007-11-13 Cierra, Inc. Energy based devices and methods for treatment of anatomic tissue defects
US7972330B2 (en) 2003-03-27 2011-07-05 Terumo Kabushiki Kaisha Methods and apparatus for closing a layered tissue defect
US8021362B2 (en) * 2003-03-27 2011-09-20 Terumo Kabushiki Kaisha Methods and apparatus for closing a layered tissue defect
US20040267191A1 (en) * 2003-03-27 2004-12-30 Cierra, Inc. Methods and apparatus for treatment of patent foramen ovale
US7165552B2 (en) * 2003-03-27 2007-01-23 Cierra, Inc. Methods and apparatus for treatment of patent foramen ovale
US6939348B2 (en) * 2003-03-27 2005-09-06 Cierra, Inc. Energy based devices and methods for treatment of patent foramen ovale
US7311701B2 (en) * 2003-06-10 2007-12-25 Cierra, Inc. Methods and apparatus for non-invasively treating atrial fibrillation using high intensity focused ultrasound
US7367975B2 (en) * 2004-06-21 2008-05-06 Cierra, Inc. Energy based devices and methods for treatment of anatomic tissue defects
EP1869424A4 (en) * 2005-04-11 2015-01-14 Terumo Corp METHOD AND DEVICE FOR CLOSING A LAYER WEBSECTED EFFECT
US20080140069A1 (en) * 2006-12-07 2008-06-12 Cierra, Inc. Multi-electrode apparatus for tissue welding and ablation
JP6231879B2 (ja) * 2013-12-27 2017-11-15 マルイ鍍金工業株式会社 部分研磨治具
CN107532323B (zh) * 2015-05-08 2019-07-12 株式会社日立制作所 湿式表面处理装置
DE102018109531A1 (de) 2018-04-20 2019-10-24 Christian-Albrechts-Universität Zu Kiel Klebe-Fügevorrichtung sowie Klebe-Fügeverfahren für eine metallische Oberfläche

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294664A (en) * 1963-09-03 1966-12-27 Hoover Co Electrolytic appliance for treating surfaces
US3546088A (en) * 1967-03-14 1970-12-08 Reynolds Metals Co Anodizing apparatus
DE3345278A1 (de) * 1983-12-14 1985-06-27 Kraftwerk Union AG, 4330 Mülheim Vorrichtung zum elektropolieren der innenoberflaeche von hohlzylindrischen koerpern
FR2561672B1 (fr) * 1984-03-21 1989-09-01 Travaux Milieu Ionisant Dispositif d'electrolyse, utilisable notamment pour la decontamination radioactive de surfaces metalliques
DE3576370D1 (de) * 1985-01-17 1990-04-12 Alusuisse Vorrichtung zum galvanischen abscheiden einer dispersionsschicht.
FR2592895B1 (fr) * 1986-01-16 1990-11-16 Selectrons France Installation pour la realisation de traitements electrolytiques localises de surfaces.
US4750981A (en) * 1986-09-30 1988-06-14 The Boeing Company Apparatus for electroplating limited surfaces on a workpiece
FR2607421B1 (fr) * 1986-12-01 1989-03-24 Electricite De France Dispositif d'exploration et/ou de traitement d'une surface lisse courbe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9468437B2 (en) 1996-08-22 2016-10-18 The Trustees Of Columbia University In The City Of New York Endovascular flexible stapling device
US8465485B2 (en) 2003-03-27 2013-06-18 Terumo Kabushiki Kaisha Energy based devices and methods for treatment of patent foramen ovale

Also Published As

Publication number Publication date
FR2641003A1 (es) 1990-06-29
DE375556T1 (de) 1990-11-29
US4986889A (en) 1991-01-22
ES2015859T3 (es) 1993-10-16
JPH02221400A (ja) 1990-09-04
FR2641003B1 (es) 1991-04-05
EP0375556A1 (fr) 1990-06-27
ES2015859A4 (es) 1990-09-16
DE68905314T2 (de) 1993-09-09
DE68905314D1 (de) 1993-04-15

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