JPS6456877A - Production of chromated galvanized steel sheet - Google Patents
Production of chromated galvanized steel sheetInfo
- Publication number
- JPS6456877A JPS6456877A JP21422787A JP21422787A JPS6456877A JP S6456877 A JPS6456877 A JP S6456877A JP 21422787 A JP21422787 A JP 21422787A JP 21422787 A JP21422787 A JP 21422787A JP S6456877 A JPS6456877 A JP S6456877A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- ions
- galvanized steel
- tervalent
- amt
- 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
- 229910001335 Galvanized steel Inorganic materials 0.000 title abstract 4
- 239000008397 galvanized steel Substances 0.000 title abstract 4
- 150000002500 ions Chemical class 0.000 abstract 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 5
- 229910000831 Steel Inorganic materials 0.000 abstract 3
- 239000010959 steel Substances 0.000 abstract 3
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 abstract 2
- 229910052681 coesite Inorganic materials 0.000 abstract 2
- 230000007797 corrosion Effects 0.000 abstract 2
- 238000005260 corrosion Methods 0.000 abstract 2
- 229910052906 cristobalite Inorganic materials 0.000 abstract 2
- 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 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract 2
- 229910052682 stishovite Inorganic materials 0.000 abstract 2
- 229910052905 tridymite Inorganic materials 0.000 abstract 2
- 239000008119 colloidal silica Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
PURPOSE:To provide superior corrosion resistance to the titled steel sheet by applying an aq. soln. contg. a specified amt. of SiO2 basing on the total amt. of hexa- and tervalent Cr ions including a specified amt. of tervalent Cr ions to a galvanized steel sheet and by drying this steel sheet. CONSTITUTION:An aq. soln. contg. Cr ions composed of hexa- and tervalent Cr ions and including tervalent Cr ions in 0.3-about 0.5 ratio to the total amt. of the Cr ions and further contg. SiO2 as colloidal silica in 0.01-0.20 ratio to the total amt. of the Cr ions [expressed in terms of chromic acid (CrO3)] is prepd. The aq. soln. is applied to a hot dip galvanized steel sheet and this steel sheet is dried without washing to remove the water. Thus, a chromated hot dip galvanized steel sheet having improved corrosion resistance is obtd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21422787A JPS6456877A (en) | 1987-08-28 | 1987-08-28 | Production of chromated galvanized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21422787A JPS6456877A (en) | 1987-08-28 | 1987-08-28 | Production of chromated galvanized steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456877A true JPS6456877A (en) | 1989-03-03 |
Family
ID=16652299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21422787A Pending JPS6456877A (en) | 1987-08-28 | 1987-08-28 | Production of chromated galvanized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456877A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716163A1 (en) * | 1994-12-07 | 1996-06-12 | ATOTECH Deutschland GmbH | Chromating bath and process for finishing surfaces of zinc, zinc alloys or cadmium |
-
1987
- 1987-08-28 JP JP21422787A patent/JPS6456877A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0716163A1 (en) * | 1994-12-07 | 1996-06-12 | ATOTECH Deutschland GmbH | Chromating bath and process for finishing surfaces of zinc, zinc alloys or cadmium |
| FR2727983A1 (en) * | 1994-12-07 | 1996-06-14 | Atotech France | CHROMATION BATH AND PROCESS FOR FINISHING ZINC, ZINC ALLOY, OR CADMIUM SURFACES |
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