GB1220772A - Selective galvanizing of steel strip - Google Patents
Selective galvanizing of steel stripInfo
- Publication number
- GB1220772A GB1220772A GB03678/69A GB1367869A GB1220772A GB 1220772 A GB1220772 A GB 1220772A GB 03678/69 A GB03678/69 A GB 03678/69A GB 1367869 A GB1367869 A GB 1367869A GB 1220772 A GB1220772 A GB 1220772A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- chromium
- per
- coating
- cathodically
- 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.)
- Expired
Links
- 238000005246 galvanizing Methods 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 title 1
- 239000010959 steel Substances 0.000 title 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 3
- 229910052804 chromium Inorganic materials 0.000 abstract 3
- 239000011651 chromium Substances 0.000 abstract 3
- 229940035427 chromium oxide Drugs 0.000 abstract 3
- 229910000423 chromium oxide Inorganic materials 0.000 abstract 3
- 239000011248 coating agent Substances 0.000 abstract 3
- 238000000576 coating method Methods 0.000 abstract 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 2
- 230000004907 flux Effects 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 abstract 1
- LQBJWKCYZGMFEV-UHFFFAOYSA-N lead tin Chemical compound [Sn].[Pb] LQBJWKCYZGMFEV-UHFFFAOYSA-N 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000005554 pickling Methods 0.000 abstract 1
- 239000001117 sulphuric acid Substances 0.000 abstract 1
- 235000011149 sulphuric acid Nutrition 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
-
- 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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/026—Deposition of sublayers, e.g. adhesion layers or pre-applied alloying elements or corrosion protection
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)
- Electroplating Methods And Accessories (AREA)
- Coating With Molten Metal (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
1,220,772. Galvanizing ferrous metal strips; cathodic pickling; electrolytic coating with chromium and chromiumoxide. STEEL CO. OF CANADA Ltd. March 14, 1969 [March 14, 1968], No. 13678/69. Headings C7B and C7F. Ferrous strip is coated with zinc by hot-dipping on one side only by first electro-depositing a chromium and hydrated chromium oxide coating containing at least 3À0 mgm per sq. foot of chromium and at least 2.0 mgm per sq. foot of chromium oxide on the side not to be coated. The coating is applied on one side by forming the strip into a U and using a tin-lead anode on the outer side of each arm of the U. The bath may be 50 to 60 g/1 chromic acid, 0À20 to 0.40 g/1 sulphuric acid, and 0.5 to 1.0 g/1 fluoboric acid. The strip is made cathodic at current densities of 200 to 300 amps. / sq. ft. The side of the strip to be galvanized may be sprayed with flux while the other side is sprayed with water to prevent flux creepage. The strip may be cathodically cleansed at a current density of 60 amps. per sq. ft. at 190 F. in a solution containing 70 g/1 NaOH and 20 g/1 alkali cleaner, and subsequently cathodically derusted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA14856 | 1968-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1220772A true GB1220772A (en) | 1971-01-27 |
Family
ID=4084089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB03678/69A Expired GB1220772A (en) | 1968-03-14 | 1969-03-14 | Selective galvanizing of steel strip |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1913167B2 (en) |
| FR (1) | FR2003915B1 (en) |
| GB (1) | GB1220772A (en) |
| SE (1) | SE350534B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214687A (en) * | 2021-12-22 | 2022-03-22 | 芜湖双翼液压件有限公司 | Hydraulic valve rod and sectional function sectional treatment process thereof |
-
1969
- 1969-03-13 SE SE03515/69A patent/SE350534B/xx unknown
- 1969-03-14 GB GB03678/69A patent/GB1220772A/en not_active Expired
- 1969-03-14 DE DE1913167A patent/DE1913167B2/en active Granted
- 1969-03-14 FR FR6907300A patent/FR2003915B1/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114214687A (en) * | 2021-12-22 | 2022-03-22 | 芜湖双翼液压件有限公司 | Hydraulic valve rod and sectional function sectional treatment process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1913167C3 (en) | 1974-05-16 |
| FR2003915B1 (en) | 1975-07-04 |
| SE350534B (en) | 1972-10-30 |
| FR2003915A1 (en) | 1969-11-14 |
| DE1913167B2 (en) | 1973-10-04 |
| DE1913167A1 (en) | 1969-10-02 |
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