EP2868779B1 - Dispositif et procédé de nettoyage et/ou de polissage de pièces - Google Patents

Dispositif et procédé de nettoyage et/ou de polissage de pièces Download PDF

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Publication number
EP2868779B1
EP2868779B1 EP13191668.6A EP13191668A EP2868779B1 EP 2868779 B1 EP2868779 B1 EP 2868779B1 EP 13191668 A EP13191668 A EP 13191668A EP 2868779 B1 EP2868779 B1 EP 2868779B1
Authority
EP
European Patent Office
Prior art keywords
holding element
carbon fibres
workpiece
carbon fibers
longitudinal axis
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.)
Active
Application number
EP13191668.6A
Other languages
German (de)
English (en)
Other versions
EP2868779A1 (fr
Inventor
Dieter Lessmann
Olaf Dipl. Ing. Reuter
Wolfgang Jagnow
Daniel Winter
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.)
Reuter & Co KG GmbH
Lessmann GmbH
Original Assignee
Reuter & Co KG GmbH
Lessmann 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 Reuter & Co KG GmbH, Lessmann GmbH filed Critical Reuter & Co KG GmbH
Priority to EP13191668.6A priority Critical patent/EP2868779B1/fr
Priority to DK13191668.6T priority patent/DK2868779T3/en
Publication of EP2868779A1 publication Critical patent/EP2868779A1/fr
Application granted granted Critical
Publication of EP2868779B1 publication Critical patent/EP2868779B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B24B1/002—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes using electric current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
    • B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/06—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces internally
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing

Definitions

  • the invention relates to a device for cleaning and / or polishing workpieces, in particular of welds on the inside of tubular workpieces, according to the closer defined in the preamble of claim 1.
  • Art Furthermore, the invention relates to a method for cleaning and / or polishing workpieces , In particular of welds on the inside of tubular workpieces, according to the closer defined in the preamble of claim 9.
  • a device for electrochemical cleaning and etching of metals is known.
  • membranes and felts are arranged around a rigid electrode, wherein a carbon fiber membrane serves as an intermediate layer between the electrode and the felt.
  • the JP H02 205700 A describes an apparatus for cleaning the inner surface of pipes comprising an electrode cover made of polyester fibers.
  • the existing of an electrically conductive material or at least one conductive material having holding element serves as an electrode through which the of Power source generated, relatively high current flows at relatively low voltage, wherein a closed circuit is generated by the connection of the power source to the workpiece via the holding member and the carbon fibers.
  • the holding element according to the invention is made elongated and the carbon fibers are arranged around a substantial part of the circumference thereof, so that inner areas of workpieces, such as pipes, holes or depressions of any kind, can be electrochemically cleaned or polished in a very simple manner.
  • the inventive arrangement of the carbon fibers on the holding element is also achieved that the largest possible number of carbon fibers is applied simultaneously to the surface of the workpiece, so that a very high cleaning performance can be achieved. This ultimately shortens the duration of the cleaning process for a single workpiece, thereby reducing manufacturing costs.
  • the carbon fibers are arranged around the entire circumference of the holding element. This ensures that even with a purely linear movement of the device relative to the workpiece, d. H. during a movement of the holding element in the direction of the longitudinal axis of the same, all surface areas of the workpiece are touched by the current-carrying carbon fibers.
  • a manufacturing technology relatively simple to implement embodiment of the invention may consist in that the holding element has at least two multiple mutually twisted wire sections, between which the carbon fibers are jammed. This also allows a uniform distribution of the carbon fibers around the circumference of the holding element.
  • the carbon fibers are held as bundles in respective recesses of the holding element. In this way, the distribution of the carbon fibers can be adapted to specific applications.
  • the carbon fibers are arranged in an annular manner around a holding element designed as a securing ring. In this way, a Kohlefaserbesatz with any variable or variable outer diameter, since the same can be determined by the fiber length and the diameter of the locking ring.
  • the result is a carbon fiber stock of any length.
  • the holding element in at least one region along its longitudinal axis, in which no Carbon fibers are provided, having an electrical insulating element.
  • a further advantageous embodiment of the invention may consist in that the holding element has an electrical insulating element in at least one region along its longitudinal axis, in which carbon fibers are provided.
  • the holding element has an electrical insulating element in at least one region along its longitudinal axis, in which carbon fibers are provided.
  • the holding element may have an electrical insulating element in a front end region.
  • an insulating element in the front end region of the holding element is particularly advantageous when using the device according to the invention in workpieces which have a bottom, since even then a short circuit is avoided.
  • the holding element has in a front end region a plurality of carbon fibers extending at different angles with respect to the longitudinal axis of the holding element, which are firmly connected to the holding element.
  • a cleaning or polishing is achieved even with components with a bottom.
  • the inventive method can be achieved in a very simple and reliable way, a cleaning and / or polishing even the otherwise difficult to access inner sides of tubular workpieces.
  • An improvement in the cleaning performance can be achieved if the holding element is moved relative to the workpiece.
  • Fig. 1 shows a device 1 for cleaning and / or polishing workpieces 2.
  • the device 1 for a variety of workpieces 2 is suitable, but in particular for cleaning and / or polishing a in Fig. 1
  • a tubular workpiece 2, on the inside or inside diameter of which the weld seam 3 to be cleaned or polished is located is shown very schematically.
  • the device 1 is particularly adapted for cleaning and / or polishing such tubular workpieces 2.
  • the device 1 has a central, elongated retaining element 4, which consists of an electrically conductive material.
  • the holding element 4 serves as explained in more detail below, as an electrode and should, in addition to the electrical conductivity, have a high corrosion resistance to acids.
  • the holding element 4, for example, consist of one of the materials with the material numbers 1.4401, 1.4571, 1.4301 or other preferably high-alloy materials or these materials have at least a predominant part.
  • the holding element 4 serves in addition to its function as an electrode also to hold a plurality of carbon fibers 5.
  • the carbon fibers 5 are fixedly connected to the holding element 4 in such a way that they run away from the holding element 4 perpendicular to the longitudinal axis x of the holding element 4.
  • the carbon fibers 5 are thus attached to the support member 4 so that they impinge as perpendicular to the surface to be cleaned of the workpiece 2, whereby the property of the carbon fiber to have the best electrical conductivity in the longitudinal direction, is best used.
  • the carbon fibers 5 are furthermore arranged around a substantial part of the circumference of the holding element 4.
  • the carbon fibers 5 are provided in each case around the entire circumference of the holding element 4, but in principle it would also be possible to dispense with the carbon fibers 5 in certain sections around the circumference of the holding element 4. Furthermore, the carbon fibers 5 are arranged on the holding element 4 such that as many carbon fibers 5 as possible touch the surface of the workpiece 2 in the most uniform manner possible.
  • the device 1 further comprises a current source 6 which is connected on the one hand to the holding element 4 and on the other hand to the workpiece 2.
  • the current source 6 can be operated, for example, with 230 or 400 volts and preferably generates a current with a relatively high current in a line 7 extending from the current source 6 to the holding element 4, the holding element 4, the workpiece 2, one of the power source 6 to the workpiece 2 extending line 8 and the power source 6 itself formed circuit.
  • the lead 8 is attached to the workpiece 2 by means of a ground terminal 9
  • the lead 7 is fixed from the current source 6 to the support member 4 to a handle 10 attached to and forming part of the support member 4, and in this way both mechanically and electrically connected to the holding element 4.
  • a current flows via the holding element 4 and the carbon fibers 5 into the workpiece 2 by the electrical voltage generated in the current source 6 in a controlled manner.
  • the carbon fibers 5 can be connected as an anode or cathode and supplied with a direct current or an alternating current.
  • the holding element 4 is brought into contact with the workpiece 2 by the carbon fibers 5 held by it or introduced into the recess of the workpiece 2 in the illustrated embodiment.
  • an electrolyte is applied to the workpiece 2 and / or the carbon fibers 5 in order to improve the electrical conductivity.
  • this is connected as a cathode and electrodes flow from the workpiece 2 to the carbon fibers 5 acting as an anode.
  • the circuit is supplied with direct current.
  • cathode and anode alternate constantly and the impurities are only detached from the surface of the workpiece 2.
  • Fig. 2 shows an enlarged view of the device 1, in which substantially the holding element 4 and the attached carbon fibers 5 are shown.
  • the holding element 4 has two multi-twisted wire sections 4a and 4b, between which the carbon fibers 5 are clamped.
  • the carbon fibers 5 may be adhered to the holding member 4 by bending a wire at 180 ° into a U-shape so that the two legs of the U form the two wire portions 4a and 4b, the carbon fibers 5 between them two wire sections 4a and 4b inserted and then the two wire sections 4a and 4b are rotated against each other.
  • the holding element 4 clamps the carbon fibers 5 so firmly that they withstand a mechanical stress and good electrical conductivity is ensured by the holding element 4 to the carbon fibers 5.
  • the carbon fibers 5 are thus arranged rotationally symmetrical about the holding element 4 forming the electrode.
  • an electrical insulating element 11 has.
  • the electrical insulating elements 11 are preferably made of a heat and acid resistant material, such as polytetrafluoroethylene (PTFE), silicone or other suitable material, or have this at least for the most part.
  • PTFE polytetrafluoroethylene
  • the electrical insulation elements 11 are distributed so that all exposed metal parts of the support member 4 are covered by the same.
  • the length of the carbon fibers 5 may vary depending on the inner diameter of the workpiece 2 to be cleaned. Furthermore, that too Retaining element 4 have a different shape than the illustrated, straight shape and are particularly adapted to the shape of a workpiece 2 to be cleaned. In particular, the holding element 4 can be bent by any angle and / or radii in order to be better adapted to the geometry of the workpiece 2.
  • an electric insulating member 11 is also arranged in an area of the holding member 4 in which the carbon fibers 5 are provided.
  • This electrical insulating member 11 between the carbon fibers 5 serves to prevent a short circuit when the carbon fibers 5 have become shorter due to wear.
  • several of these electrical insulating elements 11 may be provided in the stocked with the carbon fibers 5 area.
  • Fig. 3 shows a front view of an alternative embodiment of the support member 4, in which the carbon fibers 5 are pressed as a carbon fiber bundle 5a in respective recesses 12 of the support member 4 and are held in any other way in the recesses 12.
  • the electrical insulating elements 11 may be provided in the region of the retaining element 4.
  • the handle 10 which is also present in this case can in turn be connected to the power source 6 and an electrical connection can be provided from the handle 10 through the retaining element 4 to the carbon fibers 5.
  • the holding element 4 does not have to be made entirely of the electrically conductive material, but only an electrically conductive material has to be present within the holding element 4.
  • the outer region of the holding element 4 may be made of a material which is used in the other embodiments for forming the electrical insulating elements 11.
  • the carbon fibers 5 are arranged in a ring around the holding element 4 designed as a securing ring, resulting in a carbon fiber stock having any desired and / or variable outer diameter, since the same can be determined by the fiber length and the diameter of the securing ring 4 forming the retaining ring. While in the embodiment of the device 1 according to Fig. 2 Thus, both ends of the carbon fibers 5 look out on both sides of the support member 4, is in the embodiment of Fig. 4 the length of the carbon fibers 5, however, only the distance between the retaining ring and the outer tip of the carbon fibers. 5
  • Fig. 5 shows a section through a further embodiment of the device 1, in which the carbon fibers 5 in the longitudinal direction next to each other, that is arranged in a direction perpendicular to the plane of the page, and held by means of the elongated in this case, strip-shaped support member 4.
  • the holding element 4 can have any length, so that in principle any number of carbon fibers 5 can be attached to the same.
  • the embodiment of the device 1 according to Fig. 6 that is a development of the embodiment of Fig. 2 represents, at a front end of the holding member 4 instead of an electrical insulating 11 more, at different angles to the longitudinal axis x of the support member 4 extending from the same away carbon fibers 5.
  • carbon fibers 5 are also provided in this case, which can be used, for example, when the workpiece 2 has a bottom, not shown, or it is a blind or blind hole.
  • a similar embodiment of the device 1 is also in Fig. 7 shown.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cleaning In General (AREA)

Claims (12)

  1. Dispositif (1) de nettoyage et/ou de polissage de pièces d'ouvrage (2), en particulier de bourrelets (3) de soudure à l'intérieur de pièces d'ouvrage tubulaires (2), comportant un élément de maintien (4) allongé en un matériau électriquement conducteur, une pluralité de fibres de carbone (5) qui sont couplées rigidement à l'élément de maintien (4) de telle manière qu'elles sont disposées de manière à s'en éloigner dans une position perpendiculaire à un axe longitudinal (x) de l'élément de maintien (4), dans lequel les fibres de carbone (5) sont montées sur une partie substantielle de la périphérie de l'élément de maintien (4), et en communication avec une source électrique (6) qui est d'une part en contact avec l'élément de maintien (4) et d'autre part avec la pièce d'ouvrage (2).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que,
    les fibres de carbone (5) sont montées tout autour de la périphérie de l'élément de maintien (4).
  3. Dispositif selon les revendications 1 ou 2,
    caractérisé en ce que,
    l'élément de maintien (4) comporte au moins deux sections de fils (4a, 4b) torsadés en opposition, entre lesquels les fibres de carbone (5) sont pincées.
  4. Dispositif selon les revendications 1 ou 2,
    caractérisé en ce que,
    les fibres de carbone (5) sont maintenues en faisceaux dans des évidements appropriés (12) de l'élément de maintien (4).
  5. Dispositif selon les revendications 1 ou 2,
    caractérisé en ce que,
    les fibres de carbone (5) sont montées de façon annulaire autour d'un élément de maintien (4) façonné sous la forme d'une bague de sécurité.
  6. Dispositif selon les revendications 1 ou 2,
    caractérisé en ce que,
    les fibres de carbone (5) sont montées côte à côte dans la direction longitudinale et maintenues au moyen de l'élément de maintien (4).
  7. Dispositif selon l'une des revendications 1 à 6,
    caractérisé en ce que,
    l'élément de maintien (4) comporte un élément d'isolation électrique (11), dans au moins un secteur le long de l'axe longitudinal (x), dans lequel aucune fibre de carbone (5) n'est prévue.
  8. Dispositif selon l'une des revendications 1 à 7,
    caractérisé en ce que,
    l'élément de maintien (4) comporte un élément d'isolation électrique (11), dans au moins un secteur le long de l'axe longitudinal (x), dans lequel des fibres de carbone (5) sont prévues.
  9. Dispositif selon l'une des revendications 1 à 8,
    caractérisé en ce que,
    l'élément de maintien (4) comporte un élément d'isolation électrique (11), dans un secteur d'extrémité antérieur.
  10. Dispositif selon l'une des revendications 1 à 9,
    caractérisé en ce que,
    l'élément de maintien (4) comporte plusieurs fibres de carbone (5) complémentaires, dans un secteur d'extrémité antérieur, qui s'étendent à partir du même chemin, dans diverses directions par rapport à l'axe longitudinal (x) de l'élément de maintien (4), et qui sont liées rigidement à l'élément de maintien (4).
  11. Procédé pour nettoyer et/ou pour polir des pièces d'ouvrage (2), en particulier de bourrelets (3) de soudure à l'intérieur de pièces d'ouvrage tubulaires (2), dans lequel, sur un élément de maintien (4) allongé en un matériau électriquement conducteur, avec lequel une pluralité de fibres de carbone (5) sont couplées rigidement de telle manière qu'elles sont disposées de manière à s'en éloigner dans une position perpendiculaire à un axe longitudinal (x) de l'élément de maintien (4), dans lequel les fibres de carbone (5) sont montées sur une partie substantielle de la périphérie de l'élément de maintien (4), une tension électrique est appliquée, dans lequel un électrolyte est amené sur la pièce d'ouvrage (2) et/ou sur les fibres de carbone (5), et dans lequel l'élément de maintien (4) est mis en contact avec la pièce d'ouvrage (2).
  12. Procédé selon la revendication 11,
    caractérisé en ce que
    l'élément de maintien (4) est déplacé par rapport à la pièce d'ouvrage (2).
EP13191668.6A 2013-11-05 2013-11-05 Dispositif et procédé de nettoyage et/ou de polissage de pièces Active EP2868779B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13191668.6A EP2868779B1 (fr) 2013-11-05 2013-11-05 Dispositif et procédé de nettoyage et/ou de polissage de pièces
DK13191668.6T DK2868779T3 (en) 2013-11-05 2013-11-05 Device and method for cleaning and / or polishing workpieces.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13191668.6A EP2868779B1 (fr) 2013-11-05 2013-11-05 Dispositif et procédé de nettoyage et/ou de polissage de pièces

Publications (2)

Publication Number Publication Date
EP2868779A1 EP2868779A1 (fr) 2015-05-06
EP2868779B1 true EP2868779B1 (fr) 2016-02-03

Family

ID=49546294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13191668.6A Active EP2868779B1 (fr) 2013-11-05 2013-11-05 Dispositif et procédé de nettoyage et/ou de polissage de pièces

Country Status (2)

Country Link
EP (1) EP2868779B1 (fr)
DK (1) DK2868779T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017105145U1 (de) 2017-08-28 2017-09-05 Reuter Gmbh & Co. Kg Vorrichtung zur Reinigung metallischer Oberflächen und Reinigungsmaschine
AU2017204328B2 (en) * 2016-05-09 2023-03-02 Metal Science Technologies Pty Ltd Tip Brush - New Electrochemical Electrode

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107571132A (zh) * 2017-10-24 2018-01-12 中车长春轨道客车股份有限公司 动车组空心车轴内表面打磨除锈工具

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02205700A (ja) * 1989-02-06 1990-08-15 Kawasaki Steel Corp 鋼管の電解酸洗装置
JPH11138350A (ja) * 1997-11-10 1999-05-25 Kobe Steel Ltd アルミ中空押出形材の円筒部内面の研磨方法及び装置並びにアルミ中空押出形材
AU2008101064A4 (en) * 2008-10-30 2008-11-27 Mihalic, Marijan Stephen Mr Improved electrochemical cleaning, printing and etching system for metals
JP5787614B2 (ja) * 2011-05-18 2015-09-30 株式会社日本科学エンジニアリング 電解研磨による酸化スケール除去方法およびその装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2017204328B2 (en) * 2016-05-09 2023-03-02 Metal Science Technologies Pty Ltd Tip Brush - New Electrochemical Electrode
DE202017105145U1 (de) 2017-08-28 2017-09-05 Reuter Gmbh & Co. Kg Vorrichtung zur Reinigung metallischer Oberflächen und Reinigungsmaschine

Also Published As

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EP2868779A1 (fr) 2015-05-06
DK2868779T3 (en) 2016-05-02

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