FR2398811A1 - SURFACE TREATMENT PROCESS OF GALVANIZED STEEL PRODUCTS - Google Patents
SURFACE TREATMENT PROCESS OF GALVANIZED STEEL PRODUCTSInfo
- 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
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.
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)
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)
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 |
-
1977
- 1977-07-29 LU LU77873A patent/LU77873A1/en unknown
-
1978
- 1978-07-27 BE BE6046554A patent/BE869330A/en not_active IP Right Cessation
- 1978-07-27 DE DE19782832994 patent/DE2832994A1/en not_active Withdrawn
- 1978-07-28 FR FR7823298A patent/FR2398811A1/en active Pending
- 1978-07-28 IT IT68815/78A patent/IT1160562B/en active
- 1978-07-31 GB GB7831676A patent/GB2004569B/en not_active Expired
Patent Citations (3)
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)
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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