FR2398811A1 - SURFACE TREATMENT PROCESS OF GALVANIZED STEEL PRODUCTS - Google Patents

SURFACE TREATMENT PROCESS OF GALVANIZED STEEL PRODUCTS

Info

Publication number
FR2398811A1
FR2398811A1 FR7823298A FR7823298A FR2398811A1 FR 2398811 A1 FR2398811 A1 FR 2398811A1 FR 7823298 A FR7823298 A FR 7823298A FR 7823298 A FR7823298 A FR 7823298A FR 2398811 A1 FR2398811 A1 FR 2398811A1
Authority
FR
France
Prior art keywords
galvanized steel
steel products
surface treatment
treatment process
product
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.)
Pending
Application number
FR7823298A
Other languages
French (fr)
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of FR2398811A1 publication Critical patent/FR2398811A1/en
Pending 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
    • C23C22/78—Pretreatment of the material to be coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Coating With Molten Metal (AREA)

Abstract

La présente invention se rapporte à un procédé pour le traitement de la surface de produits en acier galvanisé, et notamment de tôles, de façon à accroître leur résistance à la corrosion. Le procédé est caractérisé en ce que, directement après la galvanisation, on soumet ledit produit à une opération de solubilisation, par voie chimique, de l'oxyde d'aluminium contenu dans la couche supérficielle de ce produit. Application aux produits métalliques tels que des tôles en acier, les profilés, fils, treillis, frises, etc.The present invention relates to a process for treating the surface of galvanized steel products, and in particular sheets, so as to increase their resistance to corrosion. The process is characterized in that, directly after galvanizing, said product is subjected to an operation of chemical solubilization of the aluminum oxide contained in the upper layer of this product. Application to metal products such as steel sheets, profiles, wires, mesh, friezes, etc.

FR7823298A 1977-07-29 1978-07-28 SURFACE TREATMENT PROCESS OF GALVANIZED STEEL PRODUCTS Pending FR2398811A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU77873A LU77873A1 (en) 1977-07-29 1977-07-29 METHOD FOR PREPARING THE SURFACE OF GALVANIZED STEEL PRODUCTS

Publications (1)

Publication Number Publication Date
FR2398811A1 true FR2398811A1 (en) 1979-02-23

Family

ID=19728654

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7823298A Pending FR2398811A1 (en) 1977-07-29 1978-07-28 SURFACE TREATMENT PROCESS OF GALVANIZED STEEL PRODUCTS

Country Status (6)

Country Link
BE (1) BE869330A (en)
DE (1) DE2832994A1 (en)
FR (1) FR2398811A1 (en)
GB (1) GB2004569B (en)
IT (1) IT1160562B (en)
LU (1) LU77873A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390348A2 (en) * 1989-03-06 1990-10-03 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating
WO1993020258A1 (en) * 1992-04-02 1993-10-14 Ppg Industries, Inc. Method of treating nonferrous metal surfaces by means of an acid activating agent and an organophosphate or organophosphonate and substrates treated by such method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741442C (en) * 1940-09-04 1943-11-11 Metallgesellschaft Ag Process for phosphating zinc alloys containing aluminum
FR2102374A1 (en) * 1970-08-19 1972-04-07 Amchem Prod
CA1006403A (en) * 1973-11-13 1977-03-08 Stephen R. Koprich Passivation of hot-dip galvanize strip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741442C (en) * 1940-09-04 1943-11-11 Metallgesellschaft Ag Process for phosphating zinc alloys containing aluminum
FR2102374A1 (en) * 1970-08-19 1972-04-07 Amchem Prod
CA1006403A (en) * 1973-11-13 1977-03-08 Stephen R. Koprich Passivation of hot-dip galvanize strip

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390348A2 (en) * 1989-03-06 1990-10-03 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating
EP0390348A3 (en) * 1989-03-06 1990-11-07 Kabushiki Kaisha Kobe Seiko Sho Also Known As Kobe Steel Ltd. Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating
US5049245A (en) * 1989-03-06 1991-09-17 Kabushiki Kaisha Kobe Seiko Sho Method for producing resin-coated rust-proof steel sheets with properties suitable for electrodeposition coating
WO1993020258A1 (en) * 1992-04-02 1993-10-14 Ppg Industries, Inc. Method of treating nonferrous metal surfaces by means of an acid activating agent and an organophosphate or organophosphonate and substrates treated by such method

Also Published As

Publication number Publication date
LU77873A1 (en) 1979-03-26
BE869330A (en) 1978-11-16
IT1160562B (en) 1987-03-11
DE2832994A1 (en) 1979-02-08
IT7868815A0 (en) 1978-07-28
GB2004569B (en) 1982-05-26
GB2004569A (en) 1979-04-04

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