BE816484A - Phosphating or passivating galvanised steel sheet - continuous process using electrostatic spraying followed by cooling and painting - Google Patents
Phosphating or passivating galvanised steel sheet - continuous process using electrostatic spraying followed by cooling and paintingInfo
- Publication number
- BE816484A BE816484A BE145549A BE145549A BE816484A BE 816484 A BE816484 A BE 816484A BE 145549 A BE145549 A BE 145549A BE 145549 A BE145549 A BE 145549A BE 816484 A BE816484 A BE 816484A
- Authority
- BE
- Belgium
- Prior art keywords
- phosphating
- passivating
- painting
- steel sheet
- cooling
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 2
- 238000010422 painting Methods 0.000 title abstract 2
- 239000010959 steel Substances 0.000 title abstract 2
- 238000010924 continuous production Methods 0.000 title 1
- 238000001816 cooling Methods 0.000 title 1
- 238000007590 electrostatic spraying Methods 0.000 title 1
- 238000005246 galvanizing Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000000889 atomisation Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 abstract 1
- 230000005686 electrostatic field Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
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
- C23C22/73—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 characterised by the process
- C23C22/76—Applying the liquid by spraying
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
-
- 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
- C23C22/73—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 characterised by the process
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
On leaving the hot-galvanising bath, jets of a phosphating or passivating liq. are directed onto the molten Zn surface of the steel sheet or strip in an electrostatic field which promotes atomisation of the liq. The sheet is then cooled to 80-60 degrees C and painted or coated with plastic material. A surface-cleaning process is pref. applied immediately prior to painting. The sheet is drawn vertically out of the Zn bath and partially cooled with hot air to above the salification temp. of Zn before phosphating. The process avoids the crystalline appearance which can occur in galvanising.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU67451A LU67451A1 (en) | 1973-04-18 | 1973-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE816484A true BE816484A (en) | 1974-12-18 |
Family
ID=19727311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE145549A BE816484A (en) | 1973-04-18 | 1974-06-18 | Phosphating or passivating galvanised steel sheet - continuous process using electrostatic spraying followed by cooling and painting |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE816484A (en) |
| LU (1) | LU67451A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITUD20090008A1 (en) * | 2009-01-14 | 2010-07-15 | Giovanni Defant | MACHINE TO BE INSERTED IN A PROCESS LINE OF CONTINUOUS GALVANIZING OF THE SHEET THAT APPLIES TO THE GALVANIZED SHEET THE PASSIVATING OR ANTIOXIDANT OR PROTECTIVE SUBSTANCE OF THE ZINC WITH ELECTROSTATIC METHOD |
-
1973
- 1973-04-18 LU LU67451A patent/LU67451A1/xx unknown
-
1974
- 1974-06-18 BE BE145549A patent/BE816484A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU67451A1 (en) | 1974-11-21 |
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