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GB1399710A - Electrolytic cleaning of metal surfaces - Google Patents

Electrolytic cleaning of metal surfaces

Info

Publication number
GB1399710A
GB1399710A GB5163172A GB5163172A GB1399710A GB 1399710 A GB1399710 A GB 1399710A GB 5163172 A GB5163172 A GB 5163172A GB 5163172 A GB5163172 A GB 5163172A GB 1399710 A GB1399710 A GB 1399710A
Authority
GB
United Kingdom
Prior art keywords
article
electrolyte
voltage
bath
unstable state
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
GB5163172A
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.)
COGHLAN BRIGHT STEEL
Electricity Council
Original Assignee
COGHLAN BRIGHT STEEL
Electricity Council
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 COGHLAN BRIGHT STEEL, Electricity Council filed Critical COGHLAN BRIGHT STEEL
Priority to GB5163172A priority Critical patent/GB1399710A/en
Priority to US413415A priority patent/US3900376A/en
Priority to SE7315104A priority patent/SE386691B/en
Priority to IT70280/73A priority patent/IT999747B/en
Priority to DE2355865A priority patent/DE2355865C2/en
Priority to FR7339650A priority patent/FR2213347B1/fr
Priority to CH1570873A priority patent/CH592748A5/xx
Publication of GB1399710A publication Critical patent/GB1399710A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

1399710 Cleaning metals electrolytically ELECTRICITY COUNCIL & COGHLAN BRIGHT STEEL Ltd 6 Nov 1973 [8 Nov 1972] 51631/72 Heading C7B An elongate metal article is cleaned by passing it continuously or stepwise through an electrolyte which does not react chemically with the metal or any contaminant thereon and applying a voltage between the article and an electrode in the bath of a magnitude such that a layer of gas or vapour covers the article surface and a discharge occurs through this layer between the article and the electrolyte, the electrolyte being maintained static or moving sufficiently slowly that, as the voltage is increased there is an unstable state where current decreases with increasing voltage, the treatment voltage being maintained above that at which the unstable state occurs. The voltage is optionally maintained within Π10 volts of the potential which gives rise to a current minimum at the higher voltage end of the unstable state. Iron or steel may be cleaned of oxide, grease or paint using 20% aqueous NaOH or Na 2 CO 3 or saturated Na/K carbonate. Rods, bars, tubes or sheets may be treated, passed horizontally or vertically through the bath; the article may merely contact the surface of the bath and may be rotated as it passes through. Rollers or sliding or immersed contacts may be used, the article being desirably cathodic, although anodic and A. C. treatment is possible. As anode, nickel or stainless steel is suitable in the form of a hemisphere, a squirrel cage of rods (through which the article may be passed) or a sheet. The cell used may have a seal through which the article passes into the bath, electrolyte being pumped in and overflowing into a tray below the cell for subsequent cooling and/or filtration and recirculation. In one embodiment a flat sheet is passed over the surface of electrolyte overflowing from a central raised portion of a rectangular cell. In examples a current of 75-125A is used at 150V, with an electrolyte flow of 10 l/mm.
GB5163172A 1972-11-08 1972-11-08 Electrolytic cleaning of metal surfaces Expired GB1399710A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB5163172A GB1399710A (en) 1972-11-08 1972-11-08 Electrolytic cleaning of metal surfaces
US413415A US3900376A (en) 1972-11-08 1973-11-06 Cleaning of metal surfaces
SE7315104A SE386691B (en) 1972-11-08 1973-11-07 KIT FOR CLEANING A SURFACE ON AN ELONG EXCELLENT METAL
IT70280/73A IT999747B (en) 1972-11-08 1973-11-08 PROCEDURE AND APPARATUS FOR PICKLING METAL SURFACES IN PARTICULAR OF ELONGATED OBJECTS SUCH AS BARS, WIRES, TUBES AND SIMILAR
DE2355865A DE2355865C2 (en) 1972-11-08 1973-11-08 Process for the electrolytic cleaning of a surface of a metal object
FR7339650A FR2213347B1 (en) 1972-11-08 1973-11-08
CH1570873A CH592748A5 (en) 1972-11-08 1973-11-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5163172A GB1399710A (en) 1972-11-08 1972-11-08 Electrolytic cleaning of metal surfaces

Publications (1)

Publication Number Publication Date
GB1399710A true GB1399710A (en) 1975-07-02

Family

ID=10460789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5163172A Expired GB1399710A (en) 1972-11-08 1972-11-08 Electrolytic cleaning of metal surfaces

Country Status (7)

Country Link
US (1) US3900376A (en)
CH (1) CH592748A5 (en)
DE (1) DE2355865C2 (en)
FR (1) FR2213347B1 (en)
GB (1) GB1399710A (en)
IT (1) IT999747B (en)
SE (1) SE386691B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997035051A1 (en) * 1996-03-20 1997-09-25 Metal Technology, Inc. An electrolytic process for cleaning and coating electrically conducting surfaces
RU2104338C1 (en) * 1997-05-20 1998-02-10 Общество с ограниченной ответственностью "ПРОЕКТ" Method of cleaning surface of metallic article in electrolyte
US5958604A (en) * 1996-03-20 1999-09-28 Metal Technology, Inc. Electrolytic process for cleaning and coating electrically conducting surfaces and product thereof
US5981084A (en) * 1996-03-20 1999-11-09 Metal Technology, Inc. Electrolytic process for cleaning electrically conducting surfaces and product thereof
RU2149930C1 (en) * 1999-07-30 2000-05-27 Рябков Данила Витальевич Method of surface modification of metal articles and device for method realization
RU2278911C2 (en) * 2004-06-16 2006-06-27 Сибирский Государственный аэрокосмический университет имени академика М.Ф. Решетнева Method of the electrochemical cathodic cleansing of the metallic surfaces from the non-electroconductive materials

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5141638A (en) * 1974-10-05 1976-04-08 Kobe Steel Ltd Renzokugaimensanaraihoho
US4046592A (en) * 1976-01-12 1977-09-06 Westinghouse Electric Corporation Wire cleaning system
IT1225255B (en) * 1982-09-21 1990-11-05 Italimpianti CONTINUOUS ANNEALING METHOD OF STEEL SHEET TAPES AND CONTINUOUS ANNEALING LINE FOR THE IMPLEMENTATION OF SUCH METHOD
JPS59232279A (en) * 1983-06-13 1984-12-27 Hitachi Ltd Removing method of oxide on metallic surface
US4572772A (en) * 1983-11-07 1986-02-25 Texas Instruments Incorporated Method for cleaning an electrode
US4820390A (en) * 1987-07-06 1989-04-11 The Interlake Companies, Inc. Apparatus and method for continuous electrochemical machining of strip material
US4941955A (en) * 1987-07-06 1990-07-17 The Interlake Companies, Inc. Apparatus and method for electrochemical machining of flat plates or sheets
JPH03501753A (en) * 1988-10-21 1991-04-18 ベロルススキ　ポリテフニチェスキ　インスティテュト Electrochemical processing method for articles made of conductive materials
US5160589A (en) * 1991-06-13 1992-11-03 Michelangelo Gionfriddo Procedure for the reduction of the cross-section of a wire
US5507926A (en) * 1994-07-11 1996-04-16 Emec Consultants Electrolytically assisted paint removal from a metal substrate
US6030519A (en) * 1998-07-06 2000-02-29 Keller; Rudolf Electrode pad for debonding paint from a metal substrate
US6428683B1 (en) * 2000-12-15 2002-08-06 United Technologies Corporation Feedback controlled airfoil stripping system with integrated water management and acid recycling system
US20030085113A1 (en) * 2001-05-10 2003-05-08 Andrews Edgar. H. Process and apparatus for cleaning and/or coating metal surfaces using electro-plasma technology
RU2215832C2 (en) * 2001-11-05 2003-11-10 Липецкий государственный технический университет Method for electrolyte-discharge cleaning of welding wire
DE10259364A1 (en) * 2002-12-18 2004-07-08 Siemens Ag Method for removing at least one surface area of a bag
US20040256246A1 (en) * 2003-06-23 2004-12-23 Rudolf Keller Electrode pad for debonding paint from a nonconductive surface
WO2005005693A1 (en) * 2003-07-01 2005-01-20 Superpower, Inc. Process control methods of electropolishing for metal substrate preparation in producing ybco coated conductors
JP5569259B2 (en) * 2010-08-26 2014-08-13 Ｊｆｅスチール株式会社 Method for producing surface-modified conductive material
DE102010046372A1 (en) * 2010-09-24 2012-03-29 Oerlikon Trading Ag, Trübbach Method for stripping workpieces
CN102787346B (en) * 2012-07-31 2015-12-02 沙福国 Plasma cleaning process before clean and environment-friendly plated film
CN103484928B (en) * 2013-10-09 2016-03-23 电子科技大学 A kind of rust cleaning of the steel product based on plasma body finishing method
CN105297126B (en) * 2015-10-15 2018-02-27 北京科技大学 A kind of liquid phase plasma large-area metal material surface continuous treatment process
US10400350B1 (en) * 2016-04-20 2019-09-03 IBC Materials & Technologies, Inc. Method and apparatus for removing paint on metallic components
CN105887176A (en) * 2016-06-22 2016-08-24 东南大学 Rebar cleaning method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE171472C (en) *
US2307928A (en) * 1939-02-24 1943-01-12 Hanson Van Winkle Munning Co Process and apparatus for cleaning metal
US2313422A (en) * 1939-04-28 1943-03-09 Carnegie Illinois Steel Corp Method of pickling metallic strip
US2437474A (en) * 1944-03-24 1948-03-09 Gilbert H Orozco Method of anodic cleaning
US2556017A (en) * 1947-01-29 1951-06-05 Edwin E Vonada Electrolytic method and apparatus for cleaning strip
US2480845A (en) * 1947-03-14 1949-09-06 Frager Max Electrolytic removal of resin from metal
BE482434A (en) * 1947-06-06
DE939659C (en) * 1952-06-28 1956-03-01 Richard Dr Springer Process for the electrolytic descaling of metal surfaces in alkaline solutions
US3338809A (en) * 1966-06-23 1967-08-29 United States Steel Corp Method of cleaning ferrous metal strands electrolytically, including moving said strands in a horizontal plane through an electrolyte while under the influence of alternating electrical fields
US3627654A (en) * 1969-11-19 1971-12-14 Atomic Energy Commission Electrolytic process for cleaning high-carbon steels
US3642586A (en) * 1970-05-12 1972-02-15 Republic Steel Corp Anodic treatment for stainless steel

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997035051A1 (en) * 1996-03-20 1997-09-25 Metal Technology, Inc. An electrolytic process for cleaning and coating electrically conducting surfaces
WO1997035052A1 (en) * 1996-03-20 1997-09-25 Metal Technology, Inc. An electrolytic process for cleaning electrically conducting surfaces
US5700366A (en) * 1996-03-20 1997-12-23 Metal Technology, Inc. Electrolytic process for cleaning and coating electrically conducting surfaces
US5958604A (en) * 1996-03-20 1999-09-28 Metal Technology, Inc. Electrolytic process for cleaning and coating electrically conducting surfaces and product thereof
US5981084A (en) * 1996-03-20 1999-11-09 Metal Technology, Inc. Electrolytic process for cleaning electrically conducting surfaces and product thereof
RU2104338C1 (en) * 1997-05-20 1998-02-10 Общество с ограниченной ответственностью "ПРОЕКТ" Method of cleaning surface of metallic article in electrolyte
RU2149930C1 (en) * 1999-07-30 2000-05-27 Рябков Данила Витальевич Method of surface modification of metal articles and device for method realization
RU2278911C2 (en) * 2004-06-16 2006-06-27 Сибирский Государственный аэрокосмический университет имени академика М.Ф. Решетнева Method of the electrochemical cathodic cleansing of the metallic surfaces from the non-electroconductive materials

Also Published As

Publication number Publication date
US3900376A (en) 1975-08-19
CH592748A5 (en) 1977-11-15
IT999747B (en) 1976-03-10
FR2213347A1 (en) 1974-08-02
DE2355865C2 (en) 1983-12-01
FR2213347B1 (en) 1978-11-17
SE386691B (en) 1976-08-16
DE2355865A1 (en) 1974-05-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee