EP0074464B1 - Vorrichtung zur Reinigung der Innenwände von metallischen Leitungssystemen durch Elektropolieren mit Hilfe bewegter Elektroden - Google Patents

Vorrichtung zur Reinigung der Innenwände von metallischen Leitungssystemen durch Elektropolieren mit Hilfe bewegter Elektroden Download PDF

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Publication number
EP0074464B1
EP0074464B1 EP82104946A EP82104946A EP0074464B1 EP 0074464 B1 EP0074464 B1 EP 0074464B1 EP 82104946 A EP82104946 A EP 82104946A EP 82104946 A EP82104946 A EP 82104946A EP 0074464 B1 EP0074464 B1 EP 0074464B1
Authority
EP
European Patent Office
Prior art keywords
electrode
electropolishing
cleaning
inner walls
metallic tubular
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
Application number
EP82104946A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0074464A1 (de
Inventor
Manfred Kienhöfer
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.)
Karlsruher Institut fuer Technologie KIT
Original Assignee
Kernforschungszentrum Karlsruhe 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 Kernforschungszentrum Karlsruhe GmbH filed Critical Kernforschungszentrum Karlsruhe GmbH
Publication of EP0074464A1 publication Critical patent/EP0074464A1/de
Application granted granted Critical
Publication of EP0074464B1 publication Critical patent/EP0074464B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/001—Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof
    • G21F9/002—Decontamination of the surface of objects with chemical or electrochemical processes
    • G21F9/004—Decontamination of the surface of objects with chemical or electrochemical processes of metallic surfaces
    • 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 the inner walls of metallic line systems by electropolishing with the aid of moving electrodes.
  • a hollow profile which consists of a conductive anode body and attached spacers made of non-conductive material.
  • CH-PS 396561 devices for the electrolytic polishing of surfaces of metallic objects are known, in which a cathode on a surface connected as an anode to be treated, for. B. is moved along an inner wall of a tube.
  • the cathode body can have the shape of a truncated cone and, for centering in the tube to be treated, can be provided with projecting parts made of insulating material, which abut the inner wall of the tube. The cathode is pulled from bottom to top through the vertical tube.
  • the invention has for its object to provide a device with which a metallic pipe system can be cleaned without having to disassemble it.
  • Under piping system should be understood here: a system of straight and curved pipes, including the associated shut-off devices, such as. B. ball valves, slide or the like. Rising or falling pipes should also be able to be cleaned successfully with the device.
  • the device should in particular be usable for the decontamination of radioactive contaminated line systems.
  • the object is achieved according to the invention by a device which has an elastic. electrode consisting of a spiral wire or a coiled ribbon, as well as a plurality of insulating spacers arranged at least fixedly or displaceably on the electrode in the electrode area.
  • the electrodes Due to the elasticity of the electrodes, an adaptation to curved surfaces is possible. As a result, disassembly of the pipes to be polished is no longer necessary, and it is possible to work with elbows and sliders as well as in inclined lines.
  • FIG. 2 shows another embodiment of the device according to the invention, in which the electrode 4a is designed in the form of a coiled stainless steel strip.
  • an approximately 300 mm long electrode 4a was produced, which was fitted with spacers 5 and 6 made of Teflon registered trademark.
  • the line system 1 was placed in a large tub filled with an electrolyte of phosphoric and sulfuric acid, and the electrode 4a was pulled through at a speed of 5 cm / min. Direct current of 10-20 A / dm 2 was used. In this way it was possible to achieve a decontamination factor of around 500.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning In General (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Electrolytic Production Of Metals (AREA)
EP82104946A 1981-09-12 1982-06-05 Vorrichtung zur Reinigung der Innenwände von metallischen Leitungssystemen durch Elektropolieren mit Hilfe bewegter Elektroden Expired EP0074464B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3136186 1981-09-12
DE19813136186 DE3136186A1 (de) 1981-09-12 1981-09-12 Verfahren und vorrichtung zur reinigung der innenwaende von metallischen leitungssystemen durch elektropolieren mit hilfe bewegter elektroden

Publications (2)

Publication Number Publication Date
EP0074464A1 EP0074464A1 (de) 1983-03-23
EP0074464B1 true EP0074464B1 (de) 1985-08-07

Family

ID=6141459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104946A Expired EP0074464B1 (de) 1981-09-12 1982-06-05 Vorrichtung zur Reinigung der Innenwände von metallischen Leitungssystemen durch Elektropolieren mit Hilfe bewegter Elektroden

Country Status (3)

Country Link
EP (1) EP0074464B1 (cs)
JP (1) JPS5855599A (cs)
DE (1) DE3136186A1 (cs)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3430384A1 (de) * 1984-08-17 1986-02-20 Kraftwerk Union AG, 4330 Mülheim Verfahren und vorrichtung zum elektropolieren der innenoberflaeche von u-foermigen waermetauscherrohren
JPS6483697A (en) * 1987-09-28 1989-03-29 Oe Kogyo Kk Method for electropolishing inner surface of straight tube or bent tube with coiled electrode
US20180281092A1 (en) * 2015-09-04 2018-10-04 Poligrat Gmbh Electrode device for electrochemical workpiece machining
CN113089073B (zh) * 2021-03-30 2022-04-01 中国工程物理研究院机械制造工艺研究所 电化学抛光用柔性电极及内腔结构电化学抛光方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH396561A (de) * 1960-10-06 1965-07-31 Nyby Bruk Ab Verfahren zum elektrolytischen Polieren von Oberflächen metallischer Gegenstände

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1209242A (fr) * 1958-07-09 1960-02-29 Jacquet Hispano Suiza Perfectionnements apportés aux procédés et appareils pour les traitements électrolytiques des tubes, plus spécialement pour le polissage
DE1931174B2 (de) * 1969-06-19 1975-09-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Einrichtung zum elektrolytischen Durchlaufpolieren von stabförmigen Werkstücken aus Zirkortlegierungen
DE2435277C2 (de) * 1974-07-23 1975-11-13 Langbein-Pfanhauser Werke Ag, 4040 Neuss Anode für die galvanische Behandlung eines Hohlprofils

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH396561A (de) * 1960-10-06 1965-07-31 Nyby Bruk Ab Verfahren zum elektrolytischen Polieren von Oberflächen metallischer Gegenstände

Also Published As

Publication number Publication date
EP0074464A1 (de) 1983-03-23
DE3136186C3 (cs) 1985-03-07
JPS5855599A (ja) 1983-04-01
DE3136186A1 (de) 1983-03-24

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