EP0403362A1 - Stromzuführungswalze - Google Patents

Stromzuführungswalze Download PDF

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Publication number
EP0403362A1
EP0403362A1 EP90401612A EP90401612A EP0403362A1 EP 0403362 A1 EP0403362 A1 EP 0403362A1 EP 90401612 A EP90401612 A EP 90401612A EP 90401612 A EP90401612 A EP 90401612A EP 0403362 A1 EP0403362 A1 EP 0403362A1
Authority
EP
European Patent Office
Prior art keywords
roller according
copper
steel
roller
internal
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
EP90401612A
Other languages
English (en)
French (fr)
Other versions
EP0403362B1 (de
Inventor
Claude Jacques
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.)
Polimiroir
Original Assignee
Polimiroir
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 Polimiroir filed Critical Polimiroir
Publication of EP0403362A1 publication Critical patent/EP0403362A1/de
Application granted granted Critical
Publication of EP0403362B1 publication Critical patent/EP0403362B1/de
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
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • C25D7/06—Wires; Strips; Foils
    • C25D7/0614—Strips or foils
    • C25D7/0657—Conducting rolls

Definitions

  • the present invention relates to the field of current conducting rollers, in particular but not exclusively rollers for continuous electrolysis lines.
  • This roller essentially comprises a central cylindrical part 12 of revolution which constitutes the main active part of the roller involved in the electrolysis, this central part is generally called “table” of the roller, and two half-shafts 14, 16 respectively arranged on the side and on the other side of the central part 12 and coaxial with it.
  • the half-shafts 14, 16 have a diameter smaller than that of the central part. They fulfill a double function: guiding the rotating roller on the one hand, and supplying the roller with current on the other.
  • rollers are traversed by an axial channel 18 allowing circulation of cooling water.
  • rollers are most often formed of a body 20 of steel provided with an external coating 30 of copper, ensuring in particular the function of collector.
  • the steel body 20 is itself generally formed by a central cylindrical sleeve 22 of revolution fitted onto two coaxial steel half-shafts 26, and welded by its ends, at 24, thereon.
  • ring 40 serving as a seal support on each half-shaft 14, 16.
  • the copper coating is generally formed by electrodeposition.
  • the production of the copper coating 30 is very delicate to implement, very long and expensive, taking into account the thicknesses imposed by the required amperages, generally between 12,000 and 18,000 amperes.
  • the object of the present invention is to propose a new current conducting roller which completely eliminates the drawbacks of the prior art.
  • a current conducting roller comprising in known manner either a steel body, characterized in that it comprises, at least over part of its length, an internal copper hoop.
  • two internal copper hoops are provided, respectively at each steel half-shaft of the roller.
  • the internal copper hoop is protected by a sheath, for example made of stainless steel.
  • the axis of the roller 100 shown in FIG. 3 is referenced 101.
  • the roller 100 comprises a central cylindrical part 112 of revolution, of larger diameter, which constitutes the main active part of the roller or table, and two half-shafts, of which only the half-shaft 116 appears in FIG. 3, which extend respectively on either side and coaxially the central part 112.
  • the roller 100 is composed of a steel body 120 and two internal copper frets, 130.
  • the steel body 120 is preferably itself formed by a central cylindrical sleeve of revolution 122 welded by its ends, respectively on stepped half-shafts 126, also made of steel. It will be noted that, unlike the prior art, the sleeve 122 is not fitted onto the half-shafts 126, but only welded at the end to these by annular beads 124.
  • the half-shafts 126 each have a through axial channel.
  • the particular geometry of the half-shafts 126 can be the subject of numerous embodiments and will therefore not be described in detail below. It will be noted that the stepped section of the half-shafts 126 is increasing, from the end part forming a manifold towards the central part 112.
  • each half-shaft 126 comprises an axially external part 125, an axially internal part 123 and a transition zone 128 between them.
  • the axially external part 125 is formed by a succession of cylindrical portions of increasing section towards the table 112. It has an internal surface, cylindrical of revolution around the axis 101, of constant diameter, referenced 127.
  • the axially internal part 123 is more flared than the axially external part 125.
  • the axially internal part 123 has an external radius equal to that of the sleeve 122. It is welded thereto by the bead 124.
  • the transition zone 128 diverges with respect to the axis 101 in alignment with the axially internal part 123.
  • the transition zone 128 alone ensures the passage of the current. In other words, at this transition zone, no copper part intervenes in the flow of the current.
  • the steel transition zone must therefore have a sufficient cross-section.
  • the two internal copper frets 130 are placed respectively inside the axially internal parts 125 of each of the steel half-shafts 126.
  • the cylindrical external surface of revolution 132 of the frets 130 is complementary to the internal surface 127 of the half-shafts 126, in order to ensure intimate electrical contact between the half-shafts 126 and the internal frets 130.
  • the silvering deposition can therefore be carried out either on the external surface 132 of the frets 130, or on the surface internal 127 half-shafts 126.
  • the copper frets 130 are protected from cooling water, generally carbonated water, as well as from chromic acid during the chroming operations of the bearing seats, seals and surface of the roller table, by a sheath. 150 preferably made of stainless steel.
  • This cylindrical sheath 150 of revolution is complementary to the internal surface 134 of the frets 130.
  • each hoop 130 is completed by two washers 152, 154 arranged transversely to the axis 101, respectively covering each of the ends of the hoops and welded at their internal periphery on the sheath 150, and at their external periphery on the half-trees 126.
  • the external surface 121 of the half-shafts 126 is chrome-plated.
  • the conventional ring 40 acting as a joint support shown by way of example in FIG. 3 can be omitted.
  • the chromed external surface 121 of the steel half-shafts 126 can in fact take the place of a joint support.
  • the body 120 of steel is accessible from the outside, so that the threads 160, 170 conventionally produced in the half-shafts can be provided directly in the half-shafts 126 made of steel, and not in a copper part of the half-shafts as was the case according to the prior art. It is understood that the mechanical strength of these threads is thus much higher in the context of the present invention.
  • the number and arrangement of these threads can be the subject of different embodiments and will therefore not be described in detail below. These threads can be used, for example, to block bearings or the manifold.
  • a nozzle 180 is attached by shrinking and fixed by welding on each end of the half-shafts 126.
  • connection between the tip 180 and the associated half-shaft 126 is such that the internal hoop 130 of copper covers the entire extent of the collector.
  • a coating 190 can be deposited by electrodeposition on the collector portion of the external surface of each steel half-shaft 126.
  • a coating 192 deposited by electrodeposition on the central sleeve of greatest flare 122, as shown in Figure 3 attached.
  • the copper coating 192 can facilitate subsequent shot peening.
  • These coatings 190 and 192 are however not essential. Furthermore, insofar as they do not play a primary role in the passage of the required amperages, they can have a very reduced thickness. Their cost and production time are therefore much lower than those of conventional coating.
  • each steel half-shaft 126 at the level of the collector part: of the order of 8,370 mm2, - section of the internal copper hoop 130: of the order of 3000 mm2, ⁇ - section of each steel half-shaft 126 at the transition zone between the cylindrical part in contact with a hoop 130 and the part welded to the central sleeve 122: at least of the order of 8,150 mm2.

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)
EP90401612A 1989-06-12 1990-06-12 Stromzuführungswalze Expired - Lifetime EP0403362B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8907720 1989-06-12
FR8907720A FR2648269B1 (fr) 1989-06-12 1989-06-12 Rouleau conducteur de courant

Publications (2)

Publication Number Publication Date
EP0403362A1 true EP0403362A1 (de) 1990-12-19
EP0403362B1 EP0403362B1 (de) 1996-04-17

Family

ID=9382602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90401612A Expired - Lifetime EP0403362B1 (de) 1989-06-12 1990-06-12 Stromzuführungswalze

Country Status (6)

Country Link
US (1) US5083353A (de)
EP (1) EP0403362B1 (de)
CA (1) CA2018741C (de)
DE (1) DE69026535T2 (de)
ES (1) ES2085902T3 (de)
FR (1) FR2648269B1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682525B1 (fr) * 1991-10-15 1994-01-14 Polimiroir Perfectionnement aux rouleaux conducteurs de courant notamment pour lignes d'electrolyse.
JP3102132B2 (ja) * 1992-03-31 2000-10-23 住友金属工業株式会社 ヒートクラウン抑制炉内ロール
US6514392B2 (en) * 2001-07-02 2003-02-04 Jason Ko Conducting roller for an electroplating apparatus
US20090045029A1 (en) * 2007-08-16 2009-02-19 Deur Delwyn G Conveyor roller and cartridge bearing assembly for same
FR3076299B1 (fr) * 2017-12-29 2021-01-08 Polimiroir Rouleaux conducteurs de courant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326490A1 (de) * 1973-05-24 1974-12-12 Kabel Metallwerke Ghh Stromzufuehrungswalze
GB2019127A (en) * 1978-04-13 1979-10-24 Masch & Werkzeugbau Gmbh A current-conducting roll and a manufacturing process therefor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958742A (en) * 1956-03-08 1960-11-01 United States Steel Corp Conductor roll and method of making the same
US3165179A (en) * 1961-09-11 1965-01-12 United States Steel Corp Ceramic coated conductor roll
JPS6045715B2 (ja) * 1982-06-16 1985-10-11 日本硬質技研株式会社 通電用コンダクタ−ロ−ルの製造法
JPS60135595A (ja) * 1983-12-23 1985-07-18 Kubota Ltd 電気メツキ用通電ロ−ル

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326490A1 (de) * 1973-05-24 1974-12-12 Kabel Metallwerke Ghh Stromzufuehrungswalze
GB2019127A (en) * 1978-04-13 1979-10-24 Masch & Werkzeugbau Gmbh A current-conducting roll and a manufacturing process therefor

Also Published As

Publication number Publication date
CA2018741A1 (fr) 1990-12-12
FR2648269A1 (fr) 1990-12-14
DE69026535T2 (de) 1996-12-19
CA2018741C (fr) 1999-02-23
EP0403362B1 (de) 1996-04-17
DE69026535D1 (de) 1996-05-23
FR2648269B1 (fr) 1994-02-18
ES2085902T3 (es) 1996-06-16
US5083353A (en) 1992-01-28

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