JPS6436794A - Chromate treatment for galvanized steel material - Google Patents
Chromate treatment for galvanized steel materialInfo
- Publication number
- JPS6436794A JPS6436794A JP19239287A JP19239287A JPS6436794A JP S6436794 A JPS6436794 A JP S6436794A JP 19239287 A JP19239287 A JP 19239287A JP 19239287 A JP19239287 A JP 19239287A JP S6436794 A JPS6436794 A JP S6436794A
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- galvanized steel
- chromate treatment
- sio2
- cathode
- 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.)
- Granted
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
PURPOSE:To form a chromate film excellent in uncoated corrosion resistance, etc., on a galvanized steel material, by carrying out electrolytic treatment under specific conditions by using a solution containing Cr<6+>, F<->, SiO2, Zn<2+>, SO4<2->, and Cl<-> in respectively specified concentrations and also using a galvanized steel material as a cathode. CONSTITUTION:Electrolytic treatment is carried out under the conditions of 1-50A/dm<2> current density and 1-100C/dm<2> quantity of electricity by using a solution containing 2-80g/l Cr<6+>, 0.05-5.0g/l F<->, 0.5-30g/l SiO2, 0.001-10g/l Zn<2+>, 0.001-5g/l SO4<2->, and 0.001-10g/l Cl<-> and also using a galvanized steel material as a cathode. By this method, the chromate film excellent in adhesive strength of painting and adhesive strength be means of adshesives can be stably formed on the galvanized steel material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19239287A JPH0680200B2 (en) | 1987-07-31 | 1987-07-31 | Chromate treatment method for galvanized steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19239287A JPH0680200B2 (en) | 1987-07-31 | 1987-07-31 | Chromate treatment method for galvanized steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6436794A true JPS6436794A (en) | 1989-02-07 |
JPH0680200B2 JPH0680200B2 (en) | 1994-10-12 |
Family
ID=16290539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19239287A Expired - Fee Related JPH0680200B2 (en) | 1987-07-31 | 1987-07-31 | Chromate treatment method for galvanized steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0680200B2 (en) |
-
1987
- 1987-07-31 JP JP19239287A patent/JPH0680200B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0680200B2 (en) | 1994-10-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |