ES376740A1 - Aqueous electrolytic stripping bath to remove metal coatings from bases of steel - Google Patents

Aqueous electrolytic stripping bath to remove metal coatings from bases of steel

Info

Publication number
ES376740A1
ES376740A1 ES376740A ES376740A ES376740A1 ES 376740 A1 ES376740 A1 ES 376740A1 ES 376740 A ES376740 A ES 376740A ES 376740 A ES376740 A ES 376740A ES 376740 A1 ES376740 A1 ES 376740A1
Authority
ES
Spain
Prior art keywords
acid
steel
ammonium
coatings
bath
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
ES376740A
Other languages
Spanish (es)
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.)
Dillenberg Bergische Metall
Original Assignee
Dillenberg Bergische Metall
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
Priority claimed from DE19691963415 external-priority patent/DE1963415C3/en
Application filed by Dillenberg Bergische Metall filed Critical Dillenberg Bergische Metall
Publication of ES376740A1 publication Critical patent/ES376740A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F5/00—Electrolytic stripping of metallic layers or coatings

Abstract

A bath for electrolytically stripping metal coatings from a steel base comprises an alkali metal nitrate, ammonium nitrate or an amine and nitric acid a salt of an organic acid, e.g. ammonium acetate, or a neutralization product of an amine, e.g. ethylene diamine or triethanolamine, and an organic acid to buffer the bath to a pH of 5-7 and either (a) for stripping coatings from stainless steel, a water-soluble chlorine compound and/or thiocyanate in an amount of 0À5 to 10 g/l, e.g. ammonium chloride, sodium hypochlorite or ammonium thiocyanate, or (b) for stripping coatings from hardened or nitrided steel, 0À2 - 30 g/l of an aromatic hydrocarbon compound with hydroxyl groups bonded directly to the benzene nucleus, e.g. phenol, dihydroxybenzene, cresol, thymol or xylenol. The organic acid used for buffering may be acetic acid, citric acid, lactic acid or oxalic acid. The coating to be removed may be of nickel, chromium, zinc, tin, copper, cadmium or silver.
ES376740A 1969-02-21 1970-02-20 Aqueous electrolytic stripping bath to remove metal coatings from bases of steel Expired ES376740A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19691908625 DE1908625B2 (en) 1969-02-21 1969-02-21 BATHROOM FOR ELECTROLYTIC REMOVAL OF METAL COATINGS FROM BASE BODIES MADE OF STAINLESS STEEL
DE19691963415 DE1963415C3 (en) 1969-12-18 Bath for the electrolytic removal of metal coatings from base bodies made of stainless steel

Publications (1)

Publication Number Publication Date
ES376740A1 true ES376740A1 (en) 1972-05-16

Family

ID=25757034

Family Applications (1)

Application Number Title Priority Date Filing Date
ES376740A Expired ES376740A1 (en) 1969-02-21 1970-02-20 Aqueous electrolytic stripping bath to remove metal coatings from bases of steel

Country Status (12)

Country Link
US (1) US3619390A (en)
JP (2) JPS502859B1 (en)
AT (3) AT298190B (en)
BE (1) BE744297A (en)
CA (1) CA918597A (en)
CH (2) CH552680A (en)
DE (1) DE1908625B2 (en)
ES (1) ES376740A1 (en)
FR (1) FR2031582B1 (en)
GB (1) GB1243937A (en)
NL (1) NL7002391A (en)
SE (1) SE364527B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH583302A5 (en) * 1974-10-22 1976-12-31 Bloesch W Ag
SE7602713L (en) * 1975-06-18 1976-12-19 Hoechst Ag BATHROOM FOR ELECTROLYTICAL FRENCH SEPARATION OF METALS
JPS52134552U (en) * 1976-04-08 1977-10-13
JPS5479131A (en) * 1977-12-07 1979-06-23 Okuno Chem Ind Co Electrolytic bath for removing electrodeposited metal on stainless steel substrate
US4264419A (en) * 1979-10-09 1981-04-28 Olin Corporation Electrochemical detinning of copper base alloys
US4264420A (en) * 1979-10-29 1981-04-28 Oxy Metal Industries Corporation Electrolytic stripping bath and process
US4233124A (en) * 1979-10-29 1980-11-11 Oxy Metal Industries Corporation Electrolytic stripping bath and process
US4400248A (en) * 1982-03-08 1983-08-23 Occidental Chemical Corporation Electrolytic stripping process
US4404074A (en) * 1982-05-27 1983-09-13 Occidental Chemical Corporation Electrolytic stripping bath and process
JPH01149935U (en) * 1988-04-05 1989-10-17
CA2027656C (en) * 1990-10-15 1998-09-29 Rodney L. Leroy Galvanic dezincing of galvanized steel
US6110881A (en) * 1990-11-05 2000-08-29 Ekc Technology, Inc. Cleaning solutions including nucleophilic amine compound having reduction and oxidation potentials
US5279771A (en) 1990-11-05 1994-01-18 Ekc Technology, Inc. Stripping compositions comprising hydroxylamine and alkanolamine
US7205265B2 (en) 1990-11-05 2007-04-17 Ekc Technology, Inc. Cleaning compositions and methods of use thereof
US20040018949A1 (en) * 1990-11-05 2004-01-29 Wai Mun Lee Semiconductor process residue removal composition and process
CA2038537C (en) * 1991-03-18 1998-08-18 Rodney L. Leroy Power assisted dezincing of galvanized steel
US7144849B2 (en) * 1993-06-21 2006-12-05 Ekc Technology, Inc. Cleaning solutions including nucleophilic amine compound having reduction and oxidation potentials
US5419779A (en) * 1993-12-02 1995-05-30 Ashland Inc. Stripping with aqueous composition containing hydroxylamine and an alkanolamine
US6969457B2 (en) * 2002-10-21 2005-11-29 General Electric Company Method for partially stripping a coating from the surface of a substrate, and related articles and compositions
DE102005029182A1 (en) * 2005-06-23 2007-01-04 Webasto Ag Heater with thermoelectric module
CN101812719B (en) * 2010-04-02 2012-01-04 上海元豪表面处理有限公司 Low-alkalinity electrolytic deburring solution, preparation method and use method thereof
CN104088007B (en) * 2014-07-11 2016-07-20 湖南纳菲尔新材料科技股份有限公司 A kind of for the decoating liquid of Sintered NdFeB magnet surface nickel tungsten phosphorus galvanized coating stripping and the application of decoating liquid with withdrawal plating
CN106715763B (en) * 2015-03-13 2019-06-07 奥野制药工业株式会社 Fixture release agent for electrolytic
CN106392227A (en) * 2016-09-12 2017-02-15 河海大学常州校区 Method for deburring of titanium alloy surface by micro-arc discharge
CN113755938B (en) * 2021-10-09 2022-08-26 哈尔滨工业大学 Method for removing metal surface coating by using ultrasonic-assisted electrolytic plasma
WO2023104999A1 (en) * 2021-12-08 2023-06-15 Atotech Deutschland GmbH & Co. KG Aqueous stripping composition for electrolytically removing a metal deposit from a substrate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200782A (en) * 1935-05-23 1940-05-14 Metal & Thermit Corp Detinning
US2588566A (en) * 1948-02-04 1952-03-11 Curtiss Wright Corp Electrolytic process for stripping copper
US2797194A (en) * 1954-07-26 1957-06-25 Western Electric Co Method of electrolytically recovering precious metals from other metal bases
US2937940A (en) * 1957-07-01 1960-05-24 Eltex Chemical Corp Selective stripping of electroplated metals
US3207683A (en) * 1962-02-05 1965-09-21 Coussinets Ste Indle Process of electrolytic surface treatment of metals
DE1281217B (en) * 1967-04-27 1968-10-24 Dillenberg Bergische Metall Bath for the electrolytic removal of galvanic deposits from ferrous basic bodies

Also Published As

Publication number Publication date
JPS502859B1 (en) 1975-01-29
FR2031582B1 (en) 1974-02-01
FR2031582A1 (en) 1970-11-20
DE1963415B2 (en) 1973-05-30
BE744297A (en) 1970-06-15
NL7002391A (en) 1970-08-25
CA918597A (en) 1973-01-09
DE1963415A1 (en) 1971-06-24
CH555893A (en) 1974-11-15
AT298190B (en) 1972-04-25
JPS5018862B1 (en) 1975-07-02
AT298189B (en) 1972-04-25
SE364527B (en) 1974-02-25
DE1908625B2 (en) 1971-08-12
GB1243937A (en) 1971-08-25
DE1908625A1 (en) 1970-11-19
AT297441B (en) 1972-03-27
US3619390A (en) 1971-11-09
CH552680A (en) 1974-08-15

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