DE60221584D1 - Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung - Google Patents

Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung

Info

Publication number
DE60221584D1
DE60221584D1 DE60221584T DE60221584T DE60221584D1 DE 60221584 D1 DE60221584 D1 DE 60221584D1 DE 60221584 T DE60221584 T DE 60221584T DE 60221584 T DE60221584 T DE 60221584T DE 60221584 D1 DE60221584 D1 DE 60221584D1
Authority
DE
Germany
Prior art keywords
iii
optimum
concentration
actual
weight ratio
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 - Lifetime
Application number
DE60221584T
Other languages
English (en)
Other versions
DE60221584T2 (de
Inventor
Giorgio Cortellaro
Paolo Giordani
Ioannis Demertzis
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.)
Henkel AG and Co KGaA
Acciai Speciali Terni SpA
Original Assignee
Henkel AG and Co KGaA
ThyssenKrupp Acciai Speciali Terni SpA
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 Henkel AG and Co KGaA, ThyssenKrupp Acciai Speciali Terni SpA filed Critical Henkel AG and Co KGaA
Application granted granted Critical
Publication of DE60221584D1 publication Critical patent/DE60221584D1/de
Publication of DE60221584T2 publication Critical patent/DE60221584T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • 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
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/086—Iron or steel solutions containing HF
    • 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
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/36—Regeneration of waste pickling liquors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
DE60221584T 2002-08-30 2002-08-30 Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung Expired - Lifetime DE60221584T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2002/009730 WO2004020700A1 (en) 2002-08-30 2002-08-30 An economic method for restoring the oxidation potential of a pickling solution

Publications (2)

Publication Number Publication Date
DE60221584D1 true DE60221584D1 (de) 2007-09-13
DE60221584T2 DE60221584T2 (de) 2008-04-17

Family

ID=31970239

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60221584T Expired - Lifetime DE60221584T2 (de) 2002-08-30 2002-08-30 Wirtschaftliches verfahren zur wiederherstellung des oxidationspotentials einer beizlösung

Country Status (6)

Country Link
EP (1) EP1552038B1 (de)
AT (1) ATE368758T1 (de)
AU (1) AU2002333772A1 (de)
DE (1) DE60221584T2 (de)
ES (1) ES2292857T3 (de)
WO (1) WO2004020700A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1394958B1 (it) * 2009-02-17 2012-07-27 Condoroil Impianti Srl Processo di ossidazione catalitica del ferro bivalente a ferro trivalente nei bagni di decapaggio per acciai inossidabili a base di acido cloridrico e/o sue miscele con altri acidi organici e inorganici.
EP3771749A1 (de) * 2019-07-29 2021-02-03 Ewald Dörken Ag Verfahren zur passivierung metallischer substrate
US20220220619A1 (en) * 2020-01-09 2022-07-14 Primetals Technologies Japan, Ltd. Method for pickling steel plate and pickling apparatus
IT202000005848A1 (it) 2020-03-19 2021-09-19 Tenova Spa Processo per decapare e/o passivare un acciaio inossidabile.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1243406B (it) * 1990-12-03 1994-06-10 Vittorio Degara Sistema di ossidazione degli ioni ferro nelle soluzioni prive di acidonitrico per il trattamento superficiale di decapaggio o di passivazione di prodotti metallici
DE69612957T2 (de) * 1996-03-14 2001-09-06 Condoroil Impianti S R L Beizen von rostfreien Stahlen mit kontinuierliche katalytische Oxidation der Beizlösung
DE19755350A1 (de) * 1997-12-12 1999-06-17 Henkel Kgaa Verfahren zum Beizen und Passivieren von Edelstahl
IT1303814B1 (it) * 1998-12-02 2001-02-23 Henkel Kgaa Apparecchiatura e metodo per controllare processi di decapaggio peracciaio.

Also Published As

Publication number Publication date
AU2002333772A1 (en) 2004-03-19
EP1552038A1 (de) 2005-07-13
ES2292857T3 (es) 2008-03-16
DE60221584T2 (de) 2008-04-17
ATE368758T1 (de) 2007-08-15
WO2004020700A1 (en) 2004-03-11
EP1552038B1 (de) 2007-08-01

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: HENKEL AG & CO. KGAA, 40589 DUESSELDORF, DE

Owner name: THYSSENKRUPP ACCIAI SPECIALI TERNI S.P.A., TER, IT

8364 No opposition during term of opposition