BE900342R - Procede pour la protection de lamines plats en acier zingue au moyen d'un revetement electrolytique multicouche. - Google Patents

Procede pour la protection de lamines plats en acier zingue au moyen d'un revetement electrolytique multicouche.

Info

Publication number
BE900342R
BE900342R BE0/213481A BE213481A BE900342R BE 900342 R BE900342 R BE 900342R BE 0/213481 A BE0/213481 A BE 0/213481A BE 213481 A BE213481 A BE 213481A BE 900342 R BE900342 R BE 900342R
Authority
BE
Belgium
Prior art keywords
zinc
layer
flat
protection
plated steel
Prior art date
Application number
BE0/213481A
Other languages
English (en)
Original Assignee
Zincroksid 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
Priority claimed from IT19880/83A external-priority patent/IT1161593B/it
Priority claimed from IT22517/83A external-priority patent/IT1163889B/it
Application filed by Zincroksid Spa filed Critical Zincroksid Spa
Application granted granted Critical
Publication of BE900342R publication Critical patent/BE900342R/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/38—Chromatising
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Procédé perfectionné pour la protection, en particulier dans des milieux agressifs, de tronçons de laminés d'acier plats, du type comprenant le dépot sur ledit tronçon laminé d'acier plat, plaqué de zinc ou d'alliages de zinc, d'un placage électrolytique à couches multiples, comprenant une couche de chrome métallique sur laquelle on dépose une couche d'oxyde de chrome, (comme exposé dans le brevet belge No. 898.905) caractérisé en ce qu'on prévoit la passivation chimique, dans une solution d'anhydride chromique de la couche de placage à base de zinc, des tronçons d'acier laminés plats, avant de réaliser la placage électrolytique à couches multiples.
BE0/213481A 1983-03-03 1984-08-10 Procede pour la protection de lamines plats en acier zingue au moyen d'un revetement electrolytique multicouche. BE900342R (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19880/83A IT1161593B (it) 1983-03-03 1983-03-03 Procedimento per la protezione di laminati piani di acciaio zincato mediante rivestimento elettrolitico multistrato
IT22517/83A IT1163889B (it) 1983-08-11 1983-08-11 Procedimento perfezionato per la protezione in ambienti particolarmente aggressivi di laminati piani di acciaio mediante rivestimento elettrolitico multistrato

Publications (1)

Publication Number Publication Date
BE900342R true BE900342R (fr) 1984-12-03

Family

ID=26327336

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/213481A BE900342R (fr) 1983-03-03 1984-08-10 Procede pour la protection de lamines plats en acier zingue au moyen d'un revetement electrolytique multicouche.

Country Status (2)

Country Link
BE (1) BE900342R (fr)
FR (1) FR2550555B2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4707415A (en) * 1985-03-30 1987-11-17 Sumitomo Metal Industries, Ltd. Steel strips with corrosion resistant surface layers having good appearance
DE3780859T2 (de) * 1986-05-14 1993-02-11 Nippon Steel Corp Oberflaechenbehandelter stahlwerkstoff, insbesondere galvanisiertes stahlblech.
FR2692596B1 (fr) * 1992-06-22 1995-03-31 Lorraine Laminage Tôle revêtue et procédé de fabrication de cette tôle.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3532608A (en) * 1967-09-29 1970-10-06 United States Steel Corp Method of treating steel and electrolyte therefor
US3647650A (en) * 1969-07-16 1972-03-07 Nippon Kokan Kk Method of treating tin plate or galvanized sheet
ZA812807B (en) * 1980-05-30 1982-04-28 Champion Spark Plug Co Preventing corrosion of zinc and cadmium

Also Published As

Publication number Publication date
FR2550555A2 (fr) 1985-02-15
FR2550555B2 (fr) 1988-12-30

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ZINCROKSID S.P.A.

Effective date: 19930228