BE426604A - - Google Patents

Info

Publication number
BE426604A
BE426604A BE426604DA BE426604A BE 426604 A BE426604 A BE 426604A BE 426604D A BE426604D A BE 426604DA BE 426604 A BE426604 A BE 426604A
Authority
BE
Belgium
Prior art keywords
emi
sulfurous acid
hydro
bath
acid
Prior art date
Application number
Other languages
French (fr)
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.)
Publication of BE426604A publication Critical patent/BE426604A/fr

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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
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

       

  Procède d'amélioration de bains acides utilisés en métallurgie.-

  
La présente invention a pour objet un procédé qui permet d'améliorer considérablement la protection :
contre la corrosion obtenue dans des bains acides de traitement des métaux, tout en réduisant considérablement la durée des .opérations , et qui consiste en la formation



  Process for improving acid baths used in metallurgy.

  
The present invention relates to a method which makes it possible to considerably improve the protection:
against corrosion obtained in acid baths for treating metals, while considerably reducing the duration of the operations, and which consists in the formation

Claims (1)

<EMI ID=1.1> <EMI ID = 1.1> Pour obtenir ce résultat, on ajoute au bain, par To obtain this result, we add to the bath, by <EMI ID=2.1> <EMI ID = 2.1> toutes ses combinaisons ou dérivés organiques. all its combinations or organic derivatives. <EMI ID=3.1> <EMI ID = 3.1> <EMI ID=4.1> <EMI ID = 4.1> le bain un ph relativement élevé, par exemple compris the bath a relatively high ph, for example included entre 3, 5 et 5 et ceci afin d'éviter la décomposition between 3, 5 and 5 and this in order to avoid decomposition de l'acide hydro-sulfureux qui donnerait lieu à la hydro-sulfurous acid which would give rise to the formation du soufre, au dégagement de l&#65533;acide sulfureux, etc... ce qui est indésirable. formation of sulfur, release of sulfurous acid, etc ... which is undesirable. <EMI ID=5.1> <EMI ID = 5.1> Procédé pour améliorer la protection contre la corrosion des bains acides utilisés en métallurgie, caractérisé par la présence dans ces bains de l'acide hydro-sulfureux Process for improving the protection against corrosion of acid baths used in metallurgy, characterized by the presence in these baths of hydro-sulfurous acid <EMI ID=6.1> <EMI ID = 6.1>
BE426604D 1937-03-04 BE426604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR829686T 1937-03-04

Publications (1)

Publication Number Publication Date
BE426604A true BE426604A (en)

Family

ID=9284455

Family Applications (1)

Application Number Title Priority Date Filing Date
BE426604D BE426604A (en) 1937-03-04

Country Status (2)

Country Link
BE (1) BE426604A (en)
FR (1) FR829686A (en)

Also Published As

Publication number Publication date
FR829686A (en) 1938-07-04

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