JPS55145162A - Manufacture of galvanized steel sheet of minimum spangle - Google Patents
Manufacture of galvanized steel sheet of minimum spangleInfo
- Publication number
- JPS55145162A JPS55145162A JP5340179A JP5340179A JPS55145162A JP S55145162 A JPS55145162 A JP S55145162A JP 5340179 A JP5340179 A JP 5340179A JP 5340179 A JP5340179 A JP 5340179A JP S55145162 A JPS55145162 A JP S55145162A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- quick cooling
- manufacture
- temp
- lateral direction
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 3
- 229910001335 Galvanized steel Inorganic materials 0.000 title abstract 2
- 239000008397 galvanized steel Substances 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 9
- 239000010959 steel Substances 0.000 abstract 9
- 238000001816 cooling Methods 0.000 abstract 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 3
- 238000007747 plating Methods 0.000 abstract 3
- 239000011701 zinc Substances 0.000 abstract 3
- 229910052725 zinc Inorganic materials 0.000 abstract 3
- 238000000137 annealing Methods 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000005507 spraying Methods 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
-
- 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
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/22—Removing excess of molten coatings; Controlling or regulating the coating thickness by rubbing, e.g. using knives, e.g. rubbing solids
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
PURPOSE:To manufacture steel sheet described in the title which is uniform over whole breadth, by controlling cooling air quantity in lateral direction of the steel sheet by adjusting the dampers of a quick cooling means before plating so as to make uniform the temp. of the steel sheet over whole breadth in quick cooling after plating. CONSTITUTION:In manufacture of galvanized steel sheet by a sendzimir system continuous zinc dipping unit, the steel sheet 1 is conveyed through an annealing, reducing furnace 2, a cooling zone 3, a quick cooling zone 4 and immersed in a molten zinc bath. In the quick cooling zone 4, the temp. of the edge parts of the steel sheet 1 is kept higher than that of the central part by dividing laterally the draft air duct of the quick cooling means into plural sections, which are equipped with separate dampers respectively, in order to adjust the cooling air quantity in the lateral direction of the steel sheet 1. The steel sheet 1 is plted with controlled quantity of adhered zinc while passing through plating rolls 6, 6', gas wiping nozzles 7, 7', and is suitably air cooled, then the steel sheet 1 is quickly cooled by the control of the temp. of lateral direction of the steel sheet passing through an aqueous soln.-spraying means 8, 8' at abut 425-440 deg.C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5340179A JPS55145162A (en) | 1979-05-02 | 1979-05-02 | Manufacture of galvanized steel sheet of minimum spangle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5340179A JPS55145162A (en) | 1979-05-02 | 1979-05-02 | Manufacture of galvanized steel sheet of minimum spangle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55145162A true JPS55145162A (en) | 1980-11-12 |
Family
ID=12941798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5340179A Pending JPS55145162A (en) | 1979-05-02 | 1979-05-02 | Manufacture of galvanized steel sheet of minimum spangle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55145162A (en) |
-
1979
- 1979-05-02 JP JP5340179A patent/JPS55145162A/en active Pending
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