JPS6473061A - Manufacture or minimum-spangle galvanized steel sheet - Google Patents
Manufacture or minimum-spangle galvanized steel sheetInfo
- Publication number
- JPS6473061A JPS6473061A JP22785787A JP22785787A JPS6473061A JP S6473061 A JPS6473061 A JP S6473061A JP 22785787 A JP22785787 A JP 22785787A JP 22785787 A JP22785787 A JP 22785787A JP S6473061 A JPS6473061 A JP S6473061A
- Authority
- JP
- Japan
- Prior art keywords
- minimum
- spangle
- steel sheet
- strip
- galvanized steel
- 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
Landscapes
- Coating With Molten Metal (AREA)
Abstract
PURPOSE:To stably manufacture a superattractive and uniform minimum-spangle galvanized steel sheet, by spraying a liquid for minimum-spangle on molten-zinc surfaces on the surfaces of an iron sheet by means of a nitrogen gas under specific pressure conditions at the time of manufacturing a minimum-spangle galvanized steel sheet. CONSTITUTION:A steel strip 1 having cleaned and activated surfaces is passed through a hot dip galvanizing bath 2 and pulled up, and then, excess molten zinc on the steel-strip surfaces is wiped out by means of gas wiping nozzles 3, by which the coating weight of molten zinc is regulated. Subsequently, the above steel strip 1 is introduced into a minimum-spangle device 4, where, before the molten zinc on the surfaces of the steel strip 1 is solidified, a liquid for minimum spangle consisting of an aqueous solution of phosphate, ammonium phosphate, magnesium phosphate, etc., is sprayed through mist nozzles 5. At this time, the liquid for minimum spangle is sprayed by means of a nitrogen gas of 2-6kg/cm<2> pressure on the steel-strip surfaces at 1-4kg/cm<2> pressure, by which the minimum-spangle galvanized steel sheet free from the oxidation of zinc and having superattractive appearance can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22785787A JPS6473061A (en) | 1987-09-11 | 1987-09-11 | Manufacture or minimum-spangle galvanized steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22785787A JPS6473061A (en) | 1987-09-11 | 1987-09-11 | Manufacture or minimum-spangle galvanized steel sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6473061A true JPS6473061A (en) | 1989-03-17 |
Family
ID=16867451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22785787A Pending JPS6473061A (en) | 1987-09-11 | 1987-09-11 | Manufacture or minimum-spangle galvanized steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6473061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004010960A (en) * | 2002-06-06 | 2004-01-15 | Nippon Steel Corp | Cooling process in process line for manufacturing industrial product |
-
1987
- 1987-09-11 JP JP22785787A patent/JPS6473061A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004010960A (en) * | 2002-06-06 | 2004-01-15 | Nippon Steel Corp | Cooling process in process line for manufacturing industrial product |
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