BE900342R - PROCESS FOR THE PROTECTION OF FLAT LAMINATES OF ZINC-PLATED STEEL BY MEANS OF A MULTI-LAYER ELECTROLYTIC COATING. - Google Patents

PROCESS FOR THE PROTECTION OF FLAT LAMINATES OF ZINC-PLATED STEEL BY MEANS OF A MULTI-LAYER ELECTROLYTIC COATING.

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
French (fr)
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/en
Priority claimed from IT22517/83A external-priority patent/IT1163889B/en
Application filed by Zincroksid Spa filed Critical Zincroksid Spa
Application granted granted Critical
Publication of BE900342R publication Critical patent/BE900342R/en

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)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (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.Improved method for protecting, in particular in aggressive environments, sections of flat rolled steel, of the type comprising the deposition on said rolled section of flat steel, plated with zinc or zinc alloys, of a plating multi-layer electrolytic, comprising a layer of metallic chromium on which a layer of chromium oxide is deposited, (as described in Belgian patent No. 898.905) characterized in that chemical passivation is provided in a solution of chromic anhydride of the zinc-based plating layer, flat-rolled steel sections, before performing the multi-layer electroplating.

BE0/213481A 1983-03-03 1984-08-10 PROCESS FOR THE PROTECTION OF FLAT LAMINATES OF ZINC-PLATED STEEL BY MEANS OF A MULTI-LAYER ELECTROLYTIC COATING. BE900342R (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19880/83A IT1161593B (en) 1983-03-03 1983-03-03 PROCEDURE FOR THE PROTECTION OF GALVANIZED STEEL LAMINATES BY MULTILAYER ELECTROLYTIC COATING
IT22517/83A IT1163889B (en) 1983-08-11 1983-08-11 PERFECTED PROCEDURE FOR THE PROTECTION IN PARTICULARLY AGGRESSIVE ENVIRONMENTS OF LAMINATED STEEL PLANS BY MULTILAYER ELECTROLYTIC COATING

Publications (1)

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

Family

ID=26327336

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/213481A BE900342R (en) 1983-03-03 1984-08-10 PROCESS FOR THE PROTECTION OF FLAT LAMINATES OF ZINC-PLATED STEEL BY MEANS OF A MULTI-LAYER ELECTROLYTIC COATING.

Country Status (2)

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

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
EP0245828B1 (en) * 1986-05-14 1992-08-05 Nippon Steel Corporation Surface treated steel material particularly electroplated steel sheet
FR2692596B1 (en) * 1992-06-22 1995-03-31 Lorraine Laminage Coated sheet and method of manufacturing the sheet.

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
FR2550555B2 (en) 1988-12-30
FR2550555A2 (en) 1985-02-15

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ZINCROKSID S.P.A.

Effective date: 19930228