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EP0596273B1 - Produits de décapage de surfaces d'aciers au chromenickel ou d'aciers du chrome et leur utilisation - Google Patents

Produits de décapage de surfaces d'aciers au chromenickel ou d'aciers du chrome et leur utilisation Download PDF

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Publication number
EP0596273B1
EP0596273B1 EP93116251A EP93116251A EP0596273B1 EP 0596273 B1 EP0596273 B1 EP 0596273B1 EP 93116251 A EP93116251 A EP 93116251A EP 93116251 A EP93116251 A EP 93116251A EP 0596273 B1 EP0596273 B1 EP 0596273B1
Authority
EP
European Patent Office
Prior art keywords
acid
chromium
weight
pickling
composition according
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
EP93116251A
Other languages
German (de)
English (en)
Other versions
EP0596273A1 (fr
Inventor
Razmik Abedian
Siegfried Piesslinger-Schweiger
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.)
Poligrat GmbH
Original Assignee
Poligrat GmbH
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Filing date
Publication date
Application filed by Poligrat GmbH filed Critical Poligrat GmbH
Publication of EP0596273A1 publication Critical patent/EP0596273A1/fr
Application granted granted Critical
Publication of EP0596273B1 publication Critical patent/EP0596273B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel
    • C23G1/088—Iron or steel solutions containing organic acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/06—Wholly-metallic mirrors

Definitions

  • the invention relates to a means for pickling the surface of Chromium-nickel steels and chromium steels, which sulfuric acid, Contains phosphoric acid or mixtures thereof and Fe (III) ions. Furthermore, the invention relates to the use of a corresponding By means of an electrochemical and / or chemical Process for pickling the surface of stainless steel or Nickel steels.
  • Pickling and cleaning agents known in the prior art for Chromium-nickel and chromium steels usually contain an active one Acid and an inhibiting or oxidizing component.
  • active components get sulfuric acid, hydrochloric acid and / or Hydrofluoric acid used.
  • inhibiting or oxidizing Component usually serves nitric acid.
  • the pickling process serves, among other things, to remove impurities to be eliminated by foreign metals (e.g. ferrite contamination). It is also a result of heat treatment or scaling or tarnishing colors created during welding as well fix organic contaminants and a metallic one to create pure surface. This is the requirement for the fact that the chromium content of the alloy and the surrounding oxygen a closed, corrosion-resistant Form a chromium oxide layer on the workpiece surface can. Only this forms the basis for the desired one Corrosion resistance of the materials.
  • Pickling agents according to the prior art generally contain Hydrofluoric acid as an active component and nitric acid as an oxidizing component.
  • the nitric acid also inhibits the attack the hydrofluoric acid on the metal surface, so that this Attack mainly on the oxides and metallic contaminants aligns and thus promotes the dissolution of the oxides becomes.
  • EP-A-0 501 867 discloses a method for the treatment of Steels, in which the pickling agent components include Sulfuric acid or phosphoric acid together with iron ions be proposed. The process comes first the redox potential of the treatment bath on one hold certain value. According to the only embodiment is called hydrogen fluoride with a concentration of 80 g / l used.
  • a process for pickling stainless steel is known from EP-A-0 505 606, in which, in addition to sulfuric acid and iron 3+ ions, the HF concentration must be at least 40 g / l. H 2 O 2 is also required as the oxidizing agent. Finally, the redox potential of the treatment solution must also be kept at a certain value in this process.
  • a pickling agent is known from US Pat. No. 3,785,866, which is particularly suitable for pickling zinc surfaces.
  • this mordant may contain fluoroboric acid as the proton-providing source.
  • such a mordant can contain iron (III) sulfate, fluoroboric acid and sulfuric acid.
  • certain additives such as sodium fluoroborate or ammonium fluoroborate, can be added to a pickling agent for chromium-containing steels which contains 20-400 g / l sulfuric acid.
  • a method for pickling stainless steel is known from US Pat. No. 3,010,854, a solution comprising nitric acid, phosphoric acid and fluorosilicates being used. The fluorosilicates can also be replaced by HBF 4 .
  • the problem of the present invention is a Means for pickling and / or cleaning the surfaces of stainless steel and provide chrome steels that reduce environmental pollution and hazards from those in the prior art avoid known agents with nitric acid and hydrofluoric acid or reduced.
  • Such a means should also meet the requirements for such Means for cleaning and pickling are sufficient.
  • it depends on the effect of the agent largely on the undesirable oxide deposits and impurities judges.
  • the appearance and structure of the metallic At the same time, the surface should be largely preserved stay.
  • nitric acid and Hydrofluoric acid can be completely dispensed with.
  • the agents according to the invention preferably contain the Fe (III) ions in the form of their water-soluble salts with a concentration up to 5% by weight, preferably 0.5 to 3% by weight.
  • Suitable water-soluble salts are iron (III) sulfate, Iron (III) citrate or iron (III) acetylacetonate.
  • the fluoroboric acid has a concentration in aqueous solution proven from 0.1 to 5.0 wt .-%. It was surprisingly found that by means of fluoroboric acid a faster and more thorough pickling effect is achieved than with fluorosilicic acid.
  • the agents according to the invention can but also hydrofluoric acid (HF) in a concentration of up to 0.5 % By weight, preferably 0.2 to 0.4% by weight.
  • HF hydrofluoric acid
  • the Hydrofluoric acid is used here only in very low concentrations the disadvantages of the prior art do not occur to the same extent as there. But in particular there is none Addition of nitric acid required. The product is therefore non-toxic in accordance with the Ordinance on Hazardous Substances.
  • the agent usually contains pickling and / or cleaning of metal surfaces an acid or acids and their mixtures in concentrations of 2 to 70% by weight, preferably from 15 to 35% by weight.
  • These acids in addition to sulfuric acid especially phosphoric acid and amidosulfonic acid serve essentially for dissolving tarnishing colors in heat affected zones and scale layers in the weld area.
  • inorganic and / or organic acids can be used in the agents according to the invention.
  • An effective improvement of the agents has been shown if additionally 0.1 to 30% by weight of substituted or unsubstituted carboxylic acids with 1 to 6 carbon atoms or polycarboxylic acids are used. Of these acids, 0.1 to 10% by weight are preferably used.
  • the substituted and unsubstituted carboxylic acids with 1 to 6 carbon atoms are, for example: Citric acid, oxalic acid, formic acid, gluconic acid, maleic acid, tartaric acid, acetic acid, propanoic acid, etc.
  • polycarboxylic acids such as polyacrylic acid can also be used or polymethacrylic acid are used.
  • Farther can be derivatives of the abovementioned acids or polyacids are used, such as hexanoic acid diamide and succinic acid diamide and their mixtures.
  • chelating agents can affect the pickling effect Improve agents according to the invention.
  • a chelating agent can advantageously phosphonic acids, especially hydroxyethane-1,1-diphosphonic acid or morpholinomethane diphosphonic acid, preferred in a concentration of 0.1 to 5% by weight will.
  • the agents according to the invention can contain an oxidizing agent for the oxidation of scale layers; these oxidizing agents are preferred in amounts of 1 to 3% by weight.
  • an oxidizing agent for the oxidation of scale layers these oxidizing agents are preferred in amounts of 1 to 3% by weight.
  • one or more nitro-substituted aromatic compounds with one or more NO 2 groups bonded to the aromatic ring nucleus in addition to a water-solubilizing group, also bonded to an aromatic nucleus, such as sodium m-nitrobenzenesulfonate or m-nitrobenzenesulfonic acid can be used.
  • the agents according to the invention can moreover be the usual ones Contain amounts of surfactants.
  • the agents according to the invention can be both liquid and immersion and Riesling also thickened by a suitable thickener such as barium sulfate, aerosil, lumic acid, etc as spreadable or sprayable pickling paste.
  • a suitable thickener such as barium sulfate, aerosil, lumic acid, etc as spreadable or sprayable pickling paste.
  • the funds work particularly good in the temperature range from 10 ° C to 80 ° C.
  • Surfactants in concentrations can also be used as further constituents of 0.1-2% by weight.
  • the rest (to 100 wt .-%) exists then optionally from other strong acids - at least 10% by weight, for example phosphoric acid and / or known thickeners.
  • the invention furthermore relates to the use of the agent according to the invention in an electrochemical and / or chemical process for pickling surfaces of chromium-nickel steels and chromium steels. It has proven to be particularly advantageous if an anodic current density of 0.2 to 30 A / dm 2 is used in an electrochemical process.
  • the method according to the invention can be used in particular for descaling of metallic surfaces are used, whereby other electrochemical treatment steps such as Can connect electropolishing.
  • the invention now represents an environmentally friendly and health less dangerous agent for pickling and / or cleaning of metallic surfaces.
  • As a special advantage of the agent according to the invention or the method according to the invention shows that with regard to the required pickling effect a significant reduction in the pickling time can be obtained.
  • composition 2 Phosphoric acid 85% 16.0% by weight 96% sulfuric acid 32.0 " Iron (III) sulfate 1.9 " Wetting agent 0.2 " Butyl glycol 3.0 " 1-hydroxyethane-1,1-diphosphonic acid 0.5 " Sodium salt of m-nitrobenzenesulfonic acid 2.3 " Succinic acid diamide 1.0 " 100% tetrafluoroboric acid 1.7 " water 41.4 " total 100.0% by weight
  • composition 3 Phosphoric acid 85% 24.0% by weight 96% sulfuric acid 18.0 " Amidosulfonic acid 3.0 " 1-hydroxyethane-1,1-diphosphonic acid 3.0 " Butyl glycol 1.0 " Sodium salt of m-nitrobenzenesulfonic acid 2.0 " Iron (III) sulfate 0.8 " 100% tetrafluoroboric acid 1.7 " water 46.3% by weight 100.0% by weight
  • Stainless steel sheets as before were made with a composition treated according to DE 37 42 367 Al (Example 1).
  • the stainless steel sheets 30, 60, 120 and 180 were welded Stained for minutes at 23 ° C.
  • the mordant according to the prior art had the following composition. Nitric acid (100%) 18% by weight Fluorosilicic acid (100%) 6 " water 75.09 " Surfactant 0.01 " Polysaccharide 0.90 "

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

Claims (11)

  1. Produit de décapage de la surface d'aciers au chrome-nickel et d'aciers au chrome, qui contient dc l'acide sulfurique, dc l'acidc phosphorique ou leurs mélanges et des ions Fe(III),
       caractérisé par le fait qu'il contient de l'acide fluoborique dans une concentration de 0,1 à 5% en poids ainsi qu'au maximum 0,5% en poids d'acide fluorhydrique, la concentration en ions (Fe(III) (calculée sous la forme sulfate de fer(III)) valant 0,5-5% en poids.
  2. Produit selon la revendication 1,
       caractérisé par le fait qu'il contient d'autres acides non organiques et/ou organiques.
  3. Produit selon l'une des revendications précédentes,
       caractérisé par le fait qu'il contient de l'acide fluorhydrique (HF) dans une concentration de 0,2 à 0,4% en poids.
  4. Produit selon l'une des revendications précédentes,
       caractérisé par le fait qu'il conticnt de 2 à 70% en poids d'acide sulfurique, d'acide phosphorique et/ou d'acide amidosulfonique.
  5. Produit selon la revendication 1,
       caractérisé par le fait qu'il contient de 0,1 à 30% en poids d'acides carboxyliques contenant de 1 à 6 atomes de carbone, ou d'acides polycarboxyliques, ayant ou non fait l'objet d'une substitution.
  6. Produit selon l'une des revendications 1 à 5,
       caractérisé par le fait qu'il contient un agent d'oxydation.
  7. Produit selon la revendication 6,
       caractérisé par le fait que comme agent d'oxydation il contient un ou plusieurs composés aromatiques ayant subi une substitution par le groupement nitro.
  8. Produit selon l'une des revendications 1 à 7,
       caractérisé par le fait qu'il contient des chélateurs.
  9. Produit selon l'une des revendication 1 à 8,
       caractérisé par le fait qu'il contient des tensides.
  10. Emploi d'un produit selon l'une des revendications 1 à 9, dans un procédé électrochimiquc et/ou chimique pour décaper la surface d'aciers au chrome-nickel ou d'aciers au chrome.
  11. Emploi selon la revendication 10, dans un procédé électrochimique qui travaille avec une densité de courant anodiquc de 0,2 à 30 A/dm2.
EP93116251A 1992-11-02 1993-10-07 Produits de décapage de surfaces d'aciers au chromenickel ou d'aciers du chrome et leur utilisation Expired - Lifetime EP0596273B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4237021A DE4237021C1 (de) 1992-11-02 1992-11-02 Mittel zum Beizen der Oberfläche von Chromnickelstählen und Chromstählen sowie Verwendung des Mittels
DE4237021 1992-11-02

Publications (2)

Publication Number Publication Date
EP0596273A1 EP0596273A1 (fr) 1994-05-11
EP0596273B1 true EP0596273B1 (fr) 1998-05-06

Family

ID=6471947

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93116251A Expired - Lifetime EP0596273B1 (fr) 1992-11-02 1993-10-07 Produits de décapage de surfaces d'aciers au chromenickel ou d'aciers du chrome et leur utilisation

Country Status (5)

Country Link
EP (1) EP0596273B1 (fr)
AT (1) ATE165876T1 (fr)
DE (2) DE4237021C1 (fr)
DK (1) DK0596273T3 (fr)
ES (1) ES2114991T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9401214A (pt) * 1994-03-18 1995-10-24 Frimox Quimica Ltda Composição,solução e processo de tratamento de superfícies de materiais ferrosos
DE19833990A1 (de) 1998-07-29 2000-02-10 Metallgesellschaft Ag Beizmittel für Edelstähle
DE10110823A1 (de) * 2001-03-07 2002-10-02 Bosch Gmbh Robert Verfahren zum Abtragen von Materialablagerungen, die bei einer Laserbearbeitung entstehen
US8192556B2 (en) 2002-10-15 2012-06-05 Henkel Kgaa Pickling or brightening/passivating solution and process for steel and stainless steel
DE10341061B4 (de) * 2003-09-05 2007-08-02 Poligrat Gmbh Elektropolierverfahren für Leichtmetalllegierungen und Elektrolyt
DE102005055768A1 (de) * 2005-11-21 2007-05-24 Ralf Waldmann Verfahren und Mittel zur elektrolytischen Reinigung und Entzunderung eines metallischen Werkstücks
DE102007010538A1 (de) 2007-03-05 2008-09-11 Poligrat Gmbh Verfahren zum thermochemischen Passivieren von Edelstahl
DE102008021299A1 (de) * 2008-04-21 2009-10-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Katalysator für toxische Kohlenwasserstoffverbindungen und/oder organische Verbindungen sowie Verfahren zu seiner Herstellung
DE102016210289A1 (de) 2016-06-10 2017-12-14 Henkel Ag & Co. Kgaa Verfahren zur reinigenden Vorbehandlung von durch Schweißen zusammengefügten eisenhaltigen Bauteilen
EP3269844A1 (fr) * 2016-07-11 2018-01-17 Beratherm AG Solution de nettoyage aqueuse destinée à éliminer des couches de noir de fonderie sur des surfaces d'aciers inoxydables en contact avec des fluides , son utilisation

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010854A (en) * 1954-12-31 1961-11-28 Armco Steel Corp Pickling solution and method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US947067A (en) * 1908-09-30 1910-01-18 Int Nickel Co Method of treating nickel-copper alloys.
GB891670A (en) * 1957-09-04 1962-03-14 English Electric Co Ltd Improvements in and relating to the removing of scale from silicon iron and other metals
US3446715A (en) * 1965-04-09 1969-05-27 Oakite Prod Inc Metal treating
JPS61235581A (ja) * 1985-04-12 1986-10-20 C Uyemura & Co Ltd スケ−ル除去剤及びスケ−ル除去方法
JPS61276999A (ja) * 1985-05-30 1986-12-06 Nippon Steel Corp Ｃｒ含有鋼板の酸洗法
DE3742367A1 (de) * 1987-12-14 1989-06-22 Pelox Chemietechnik Gmbh Co Kg Beiz- und reinigungsmittel fuer metalloberflaechen
JPH0273983A (ja) * 1988-09-07 1990-03-13 Nippon Parkerizing Co Ltd アルミニウム用酸性洗浄液
FR2673200A1 (fr) * 1991-02-25 1992-08-28 Ugine Aciers Procede de surdecapage de materiaux en acier tels que les aciers inoxydables et les aciers allies.
IT1245594B (it) * 1991-03-29 1994-09-29 Itb Srl Processo di decapaggio e di passivazione di acciaio inossidabile senza acido nitrico

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010854A (en) * 1954-12-31 1961-11-28 Armco Steel Corp Pickling solution and method

Also Published As

Publication number Publication date
ES2114991T3 (es) 1998-06-16
EP0596273A1 (fr) 1994-05-11
DK0596273T3 (da) 1999-02-15
DE59308502D1 (de) 1998-06-10
ATE165876T1 (de) 1998-05-15
DE4237021C1 (de) 1994-02-10

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