EP0801153A1 - Procédé et dispositif pour le traitement électrolytique d'objets transportés en continu - Google Patents

Procédé et dispositif pour le traitement électrolytique d'objets transportés en continu Download PDF

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Publication number
EP0801153A1
EP0801153A1 EP97103299A EP97103299A EP0801153A1 EP 0801153 A1 EP0801153 A1 EP 0801153A1 EP 97103299 A EP97103299 A EP 97103299A EP 97103299 A EP97103299 A EP 97103299A EP 0801153 A1 EP0801153 A1 EP 0801153A1
Authority
EP
European Patent Office
Prior art keywords
potential
potential difference
treatment
treated
measuring
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
EP97103299A
Other languages
German (de)
English (en)
Other versions
EP0801153B1 (fr
Inventor
Jovan Dipl.-Ing.Dr. Starcevic
Karl Ing. Siegmund
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.)
Andritz Patentverwaltungs GmbH
Original Assignee
Andritz Patentverwaltungs 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 Andritz Patentverwaltungs GmbH filed Critical Andritz Patentverwaltungs GmbH
Publication of EP0801153A1 publication Critical patent/EP0801153A1/fr
Application granted granted Critical
Publication of EP0801153B1 publication Critical patent/EP0801153B1/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
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/12—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • 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
    • 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
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C25F1/04—Pickling; Descaling in solution
    • C25F1/06—Iron or steel

Definitions

  • the invention relates to a method for the electrolytic treatment of material passing through, the product being passed through an electrolyte liquid and an electrical potential being impressed on the product, and a device for carrying out the method, comprising at least one treatment tank for holding electrolyte liquid through which the material to be treated is treated Is well guided, and at least one pair of electrodes for impressing an electrical potential on the good.
  • the rectifiers shape an electrical potential on the material to be treated.
  • the potential is usually shaped in the longitudinal direction.
  • the electrical current thus flows in the longitudinal direction through the material being treated.
  • the difficulty is to keep the distances between pickling material and electrodes exactly.
  • Grounding rollers must be provided to compensate for the ground potential. This is especially necessary to protect the equipment (reels, scissors, etc.).
  • the effects of the grounding rollers are limited and the higher the potential difference, the greater the risk of damage to the items to be treated and equipment by electrical sparks.
  • the compensation potential is preferably set between positive and negative values relative to the earth potential.
  • the compensation potential impressed on the treated good can be made up of two.
  • the aim set at the beginning of a device for the electrolytic treatment of material in transit comprising at least one treatment tank for holding electrolyte liquid, through which the material to be treated is guided by means of guide rollers, and at least one pair of electrodes for applying an electrical potential to the material, also according to the invention achieved in that there is at least one device for measuring the potential difference between the material and the earth potential and / or between the material in the inlet and outlet and at least a pair of additional electrodes connected to a controllable rectifier, the device for measuring the potential difference is connected to the regulating part of the rectifier.
  • a treatment item free of potential differences can be achieved after any electrolytic treatment, since the presence or build-up of the smallest potential differences is determined immediately and is compensated for by applying an opposite potential in the treatment item.
  • the control range of the rectifier advantageously extends in both directions with respect to the earth potential. This means that any direction and size of the residual potential can be compensated for with just one rectifier, ie with very little expenditure on equipment.
  • control ranges of the two rectifiers with respect to the earth potential advantageously extend in the opposite direction, and despite the simple construction of the individual rectifiers the potential difference in the material to be treated can be compensated for in any direction with respect to the earth potential.
  • the or each anodically polarized electrode is made of a material which is resistant to the chemical anodic attack of the electrolyte liquid. Corrosion due to chemical / anodic attack can thus be prevented even with constant control, since there is no need to reverse the polarity.
  • the device for measuring the potential difference between the material being treated and the earth potential is arranged directly behind the last electrode or immediately in front of the first electrode, preferably outside the treatment tank .
  • the device for measuring the potential difference is a voltage measuring device or a current measuring device which is brought into contact with the good, with the good and also with the ground via any roller (s) or sliding contact (s) on the good.
  • a good that is free of potential difference with respect to the earth potential can also be produced without contact with the earth potential.
  • Fig. 1 shows a schematic representation of a treatment cell with two pairs of additional electrodes and two rectifiers
  • Fig. 2 shows a further variant of the invention with potential measurement between the inlet and outlet
  • Fig. 3 shows a treatment area consisting of two containers.
  • the material to be treated here a steel strip or wire 1
  • a treatment tank 3 in which an electrolyte liquid 4 is located.
  • the good 1 is located below the liquid level 4 'of the electrolyte 4 during the treatment.
  • the box 5 shown in dashed lines symbolizes all possible devices for impressing at least one potential U 1 to U n on the treatment good 1, for example electrodes, rectifiers, current rolls, etc.
  • Behind the treatment tank 3 there is a grounding roller 6 which is at ground potential, and a current measuring device 7 can be provided in its path to determine the direction and height of a potential difference remaining in the well 1 after the electrolytic treatment 5 from the size and the current direction .
  • a voltage measuring device 8 can be brought into contact with the material 1 after the treatment tank 3 in order to determine the potential difference from the voltage drop.
  • the grounding roller 6 could at best with a sufficiently precise and reliable compensation of the potential difference due to the treatment ⁇ U B are omitted.
  • the current measuring device 7 or the voltage measuring device 8 is now connected to the control parts of two rectifiers 10, 11 via a control line 9.
  • Each of these rectifiers 10, 11 is equipped with at least one pair of additional electrodes 12, by means of which potentials U x and U y of variable size, which are opposite to the material 1, can be impressed.
  • the electrodes 12 advantageously consist of a material that is resistant to chemical and / or anodic attack in the electrolyte 4.
  • a potential difference ( ⁇ U B) which may be variable in the exact size, but is intentionally always present, should be provided so that a precisely controllable arrangement of at least one rectifier 10 or 11 and one pair of electrodes 12 exactly counteracts the potential difference through the treatment ⁇ U B Potential difference U x or U y or (U x -U y ) impressed and thus the potential difference freedom of the good 1 can be guaranteed.
  • FIG. 2 shows a system in which the measurement of the potential difference (U, I) between the inlet and outlet of the strip 1 from the container 4 is carried out.
  • the measurement is carried out either by a current measuring device 7 or by a voltage measuring device 8 .
  • All other parts correspond to those in Fig. 1st
  • FIG. 3 shows a system similar to that in FIG. 1.
  • the treatment part consists of two separate containers 3, 3 , different electrolytes 4, 4 '' can be used.
  • the tape 1 is over pulleys 2 from the first container 3 led to container 3. During the treatment, current flows across the belt between the containers.
  • the electrodes 12 for equipotential bonding are located in the container 3, which can be the inlet or outlet from the treatment system, depending on the direction of strip travel.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
EP97103299A 1996-04-12 1997-02-28 Procédé et dispositif pour le traitement électrolytique d'objets transportés en continu Expired - Lifetime EP0801153B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0066096A AT405060B (de) 1996-04-12 1996-04-12 Verfahren und vorrichtung zur elektrolytischen behandlung von durchlaufendem gut
AT66096 1996-04-12
AT660/96 1996-04-12

Publications (2)

Publication Number Publication Date
EP0801153A1 true EP0801153A1 (fr) 1997-10-15
EP0801153B1 EP0801153B1 (fr) 1999-12-01

Family

ID=3496466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103299A Expired - Lifetime EP0801153B1 (fr) 1996-04-12 1997-02-28 Procédé et dispositif pour le traitement électrolytique d'objets transportés en continu

Country Status (10)

Country Link
US (1) US5938913A (fr)
EP (1) EP0801153B1 (fr)
JP (1) JPH1036998A (fr)
KR (1) KR100474657B1 (fr)
CN (1) CN1106459C (fr)
AT (1) AT405060B (fr)
DE (1) DE59700775D1 (fr)
ID (1) ID16559A (fr)
TW (1) TW419535B (fr)
ZA (1) ZA973099B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6726825B2 (en) * 2000-04-07 2004-04-27 Matsushita Electric Industrial Co., Ltd. Method and apparatus for manufacturing positive electrode foil of aluminum electrolytic capacitor
AT413697B (de) * 2001-11-07 2006-05-15 Andritz Ag Maschf Verfahren zur behandlung säurehältiger abwässer
IT1395853B1 (it) * 2009-09-30 2012-10-26 Tenova Spa Gruppo di preparazione superficiale per linee di produzione di nastri metallici
CN102140670B (zh) * 2011-03-11 2012-09-12 西北有色金属研究院 涂层导体用合金基带的连续电解抛光装置及方法
US9220970B1 (en) 2014-11-14 2015-12-29 The Burton Corporation Snowboard binding and boot
US9149711B1 (en) 2014-11-14 2015-10-06 The Burton Corporation Snowboard binding and boot
WO2016077441A1 (fr) 2014-11-14 2016-05-19 The Burton Corporation Chaussure et fixation de planche à neige

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240881A (en) * 1979-02-02 1980-12-23 Republic Steel Corporation Electroplating current control
JPH04110499A (ja) * 1990-08-31 1992-04-10 Nisshin Steel Co Ltd 迷走電流抑制方法及びその装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR204283A1 (es) * 1975-01-21 1975-12-10 Uss Eng & Consult Aparato para el tratamiento electrolitico de tiras de metal
US4370210A (en) * 1981-03-10 1983-01-25 Nippon Kinzoku Co., Ltd. Method and apparatus for continuously forming color display layer on stainless steel strip
JP2632235B2 (ja) * 1990-06-19 1997-07-23 富士写真フイルム株式会社 アルミニウム製品の連続電解処理装置および方法
US5181997A (en) * 1990-06-19 1993-01-26 Fuji Photo Film Co., Ltd. Apparatus and method for continuously electrolyzing aluminum products
JP3922728B2 (ja) * 1993-02-01 2007-05-30 住友電気工業株式会社 金属被覆超電導線の製造方法および電解研磨装置
FR2704241B1 (fr) * 1993-04-22 1995-06-30 Lorraine Laminage Procede de regulation d'electro-deposition sur une bande de metal.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240881A (en) * 1979-02-02 1980-12-23 Republic Steel Corporation Electroplating current control
JPH04110499A (ja) * 1990-08-31 1992-04-10 Nisshin Steel Co Ltd 迷走電流抑制方法及びその装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 358 (C - 0970) 4 August 1992 (1992-08-04) *

Also Published As

Publication number Publication date
CN1170783A (zh) 1998-01-21
CN1106459C (zh) 2003-04-23
JPH1036998A (ja) 1998-02-10
DE59700775D1 (de) 2000-01-05
ZA973099B (en) 1997-11-18
ATA66096A (de) 1998-09-15
KR970070254A (ko) 1997-11-07
TW419535B (en) 2001-01-21
US5938913A (en) 1999-08-17
EP0801153B1 (fr) 1999-12-01
KR100474657B1 (ko) 2005-08-17
ID16559A (id) 1997-10-16
AT405060B (de) 1999-05-25

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