WO2020039869A1 - 溶融金属めっき鋼帯の製造方法及び連続溶融金属めっき設備 - Google Patents
溶融金属めっき鋼帯の製造方法及び連続溶融金属めっき設備 Download PDFInfo
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- WO2020039869A1 WO2020039869A1 PCT/JP2019/030071 JP2019030071W WO2020039869A1 WO 2020039869 A1 WO2020039869 A1 WO 2020039869A1 JP 2019030071 W JP2019030071 W JP 2019030071W WO 2020039869 A1 WO2020039869 A1 WO 2020039869A1
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- steel strip
- gas
- hot
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- molten metal
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 127
- 239000010959 steel Substances 0.000 title claims abstract description 127
- 239000002184 metal Substances 0.000 title claims abstract description 76
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000007747 plating Methods 0.000 title claims description 44
- 238000002347 injection Methods 0.000 claims description 31
- 239000007924 injection Substances 0.000 claims description 31
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 11
- 239000008397 galvanized steel Substances 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 88
- 239000011701 zinc Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 210000004894 snout Anatomy 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910018137 Al-Zn Inorganic materials 0.000 description 2
- 229910018573 Al—Zn Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Images
Classifications
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- 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
-
- 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
-
- 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
- C23C2/0034—Details related to elements immersed in bath
- C23C2/00342—Moving elements, e.g. pumps or mixers
- C23C2/00344—Means for moving substrates, e.g. immersed rollers or immersed bearings
-
- 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
- C23C2/003—Apparatus
- C23C2/0038—Apparatus characterised by the pre-treatment chambers located immediately upstream of the bath or occurring locally before the dipping process
- C23C2/004—Snouts
-
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
-
- 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
Definitions
- the present invention relates to a method for producing a hot-dip metal-plated steel strip and a continuous hot-dip metal plating facility, and more particularly to gas wiping for adjusting the amount of molten metal deposited on the surface of the steel strip (hereinafter, also referred to as “plated deposition amount”). It is.
- the steel strip S annealed in the continuous annealing furnace in the reducing atmosphere passes through the snout 10 and continuously enters the molten metal bath 14 in the plating tank 12. Will be introduced. Thereafter, the steel strip S is pulled up above the molten metal bath 14 via the sink roll 16 and the support roll 18 in the molten metal bath 14, adjusted to a predetermined plating thickness by the gas wiping nozzles 20 ⁇ / b> A, 20 ⁇ / b> B, and then cooled. Then, it is led to a subsequent process.
- the gas wiping nozzles 20A and 20B are arranged above the plating tank 12 so as to face each other with the steel strip S interposed therebetween, and spray gas from the injection ports toward both surfaces of the steel strip S. By this gas wiping, excess molten metal is scraped off, the amount of plating applied to the surface of the steel strip is adjusted, and the molten metal attached to the surface of the steel strip is made uniform in the sheet width direction and the sheet longitudinal direction.
- the gas wiping nozzles 20A and 20B are generally configured to be wider than the steel strip width in order to cope with various steel strip widths and to cope with a positional deviation in the width direction when the steel strip is pulled up. Extending beyond the part.
- the gas blown out from a pair of gas wiping nozzles collides outside the both ends in the width direction of the steel strip, and the flow of the gas is disturbed.
- the wiping force is reduced in a region (edge portion) near both ends in the direction, and an edge overcoat in which the amount of plating applied to the edge portion of the steel strip surface relatively increases is likely to occur.
- the edge overcoat appears more remarkably. This is because when operating at a low wiping gas pressure to obtain a high adhesion amount, the wiping force at the edge of the steel strip surface is further reduced.
- the plated steel sheet on which such edge overcoat has occurred is cut before winding, and thus greatly affects the yield of the plated steel sheet.
- Patent Literature 1 a pair of baffle plates are arranged outside both ends in the width direction of a steel strip at a height where a pair of gas wiping nozzles are installed, and the pair of gas wiping nozzles ejects the gas from the pair of gas wiping nozzles. Methods for avoiding gas collisions are described. Patent Document 1 describes that the edge overcoat can be suppressed by avoiding the collision of the gas.
- the present invention has been made in view of the above problems, and has been developed to provide a method for manufacturing a hot-dip metal-plated steel strip and a continuous hot-dip metal plating facility capable of manufacturing a high-quality hot-dip metal-plated steel strip capable of sufficiently suppressing the occurrence of edge overcoat.
- the purpose is to provide.
- Patent Literature 1 a baffle plate is simply installed at a height where a gas wiping nozzle is installed, and gas is directly discharged from a pair of gas wiping nozzles arranged opposite to each other outside both ends in the width direction of the steel strip. It was a technical idea that it was only necessary to avoid a natural collision. Therefore, as shown in FIG. 8, there was a relatively long distance from the lower end of the baffle plate 60 to the bath surface.
- the present inventors consider that shortening the distance from the lower end of the baffle plate to the bath surface contributes to suppression of edge overcoat in order to shorten the vertical length of the edge portion where the wiping force is reduced as described above.
- the correlation between the distance from the lower end of the baffle plate to the bath surface and the occurrence of the edge overcoat was investigated, it was found that by setting the distance to 50 mm or less, the edge overcoat could be sufficiently suppressed.
- the gist configuration of the present invention completed on the basis of the above findings is as follows. [1] A steel strip is continuously immersed in a molten metal bath, A pair of gas wiping nozzles disposed on a steel strip pulled up from the molten metal bath and sandwiching the steel strip, a slit-shaped gas extending wider than the steel strip along the width direction of the steel strip.
- a plating tank containing a molten metal and forming a molten metal bath;
- a gas injection port having a slit-shaped gas injection port disposed so as to sandwich the steel strip continuously pulled up from the molten metal bath and extending wider than the steel strip along the width direction of the steel strip;
- a pair of gas wiping nozzles that spray gas from the mouth toward the steel strip to adjust the amount of plating applied to both sides of the steel strip,
- a pair of baffle plates arranged outside the width direction both ends of the steel strip, and a part of the front and back surfaces are arranged so as to face the gas injection ports of the pair of gas wiping nozzles, Wherein the height B of the lower end of the pair of baffle plates with respect to the bath surface of the molten metal bath is +50 mm or less when the upper side in the vertical direction is positive.
- FIG. 5 is a cross-sectional view of the gas wiping nozzle 20A perpendicular to the steel strip S in a state where the nozzle angle ⁇ is greater than 0 degree in one embodiment of the present invention.
- FIG. 2 is an enlarged view of a baffle plate 40 of FIG. 1 and its periphery.
- FIG. 2 is a top view of the gas wiping nozzles 20A and 20B of FIG. 1 and the periphery thereof.
- FIG. 6 is an enlarged view of a width direction end of the steel strip of FIG. 5 and its periphery.
- FIG. 2 is a perspective view of the baffle plate 40 of FIG. 1 and its periphery. It is a perspective view of the baffle plate 60 and its periphery in a prior art. It is a graph which shows the relationship between height B of the lower end of a baffle plate with respect to a bath surface, and edge overcoat ratio R. It is a schematic diagram which shows the structure of a general continuous hot-dip metal plating equipment.
- a method for manufacturing a hot-dip metal-plated steel strip and a continuous hot-dip metal plating facility 100 (hereinafter, also simply referred to as “plating facility”) according to an embodiment of the present invention will be described.
- a plating facility 100 of the present embodiment includes a snout 10, a plating tank 12 for storing a molten metal, a sink roll 16, and a support roll 18.
- the snout 10 is a member that defines a space through which the steel strip S passes and whose cross section perpendicular to the steel strip traveling direction has a rectangular shape, and whose tip is immersed in a molten metal bath 14 formed in the plating tank 12. I have.
- the steel strip S annealed in the continuous annealing furnace in the reducing atmosphere passes through the snout 10 and is continuously introduced into the molten metal bath 14 in the plating tank 12.
- the steel strip S is pulled up above the molten metal bath 14 via the sink roll 16 and the support roll 18 in the molten metal bath 14, and after being adjusted to a predetermined plating thickness by the pair of gas wiping nozzles 20A and 20B. , Is cooled and led to the subsequent process.
- the pair of gas wiping nozzles 20A and 20B (hereinafter, also simply referred to as “nozzles”) are arranged above the plating tank 12 to face each other with the steel strip S interposed therebetween.
- the nozzle 20A blows gas toward the steel strip S from a slit-shaped gas injection port 28 extending in the width direction of the steel strip at the tip thereof. Adjust the amount of plating on the surface. The same applies to the other nozzle 20B.
- the excess molten metal is scraped off by the pair of nozzles 20A and 20B, the amount of plating applied to both surfaces of the steel strip S is adjusted, and the sheet width direction and the sheet longitudinal direction are adjusted. Is uniformed.
- the nozzles 20A and 20B are generally configured to be longer than the steel strip width in order to cope with various steel strip widths and to cope with a positional deviation in the width direction when the steel strip is pulled up.
- the band extends to the outside from the widthwise end of the band. That is, the slit-shaped gas injection ports 28 of the nozzles 20A and 20B extend wider than the steel strip along the width direction of the steel strip.
- the nozzle 20 ⁇ / b> A has a nozzle header 22 and an upper nozzle member 24 and a lower nozzle member 26 connected to the nozzle header 22.
- the tip portions of the upper and lower nozzle members 24 and 26 have surfaces facing each other parallel to each other in a sectional view perpendicular to the steel strip S, thereby forming a slit-shaped gas injection port 28.
- the gas injection ports 28 extend in the plate width direction of the steel strip S.
- the vertical cross-sectional shape of the nozzle 20A has a tapered shape tapering toward the tip.
- the thickness of the tip portions of the upper and lower nozzle members 24 and 26 may be about 1 to 3 mm.
- the opening width (nozzle gap) of the gas injection port is not particularly limited, but can be about 0.5 to 3.0 mm.
- Gas supplied from a gas supply mechanism passes through the inside of the header 22, further passes through a gas flow path defined by the upper and lower nozzle members 24 and 26, is injected from a gas injection port 28, and Sprayed on the surface.
- the other nozzle 20B has a similar configuration.
- the gas pressure inside the nozzle header 22 is defined as “header pressure P”.
- the steel strip S is continuously immersed in the hot-dip metal bath 14, and the hot-dip steel strip S is disposed on the hot-dip steel strip S with the steel strip S interposed therebetween.
- Gas is blown from a pair of gas wiping nozzles 20A and 20B to adjust the amount of molten metal adhered to both sides of the steel strip S, thereby continuously producing a hot-dip metal-plated steel strip.
- the steel strip S is provided on the outside of the width direction both ends, preferably on the steel strip extension surface near the width direction end of the steel strip S.
- a pair of baffle plates 40 and 42 are arranged. These baffle plates 40, 42 are arranged between the pair of nozzles 20A, 20B. Therefore, the front and back surfaces of the baffle plate face the gas injection ports 28 of the pair of nozzles 20A and 20B.
- the baffle plates 40 and 42 contribute to reduction of splash by avoiding direct collision between the gas injected from the pair of nozzles 20A and 20B.
- the shape of the baffle plates 40 and 42 is not particularly limited, but is preferably rectangular as shown in FIG. 7, and two sides thereof are arranged in parallel with the extending direction of the width direction end of the steel strip S. preferable.
- the thickness of the baffle plates 40 and 42 is desirably 2 to 10 mm. If the plate thickness is 2 mm or more, the baffle plate is not easily deformed by the pressure of the wiping gas. If the plate thickness is 10 mm or less, the possibility of contact with the wiping nozzle or thermal deformation is low.
- the height B of the lower ends of the pair of baffle plates 40 and 42 with respect to the bath surface of molten metal bath 14 be +50 mm or less with the upper side in the vertical direction being positive. It is.
- the vertical length of the edge portion of the steel strip surface where the wiping force decreases due to the turbulent flow generated immediately below the lower end of the baffle plate also exceeds 50 mm. Will exist. In that case, as described above, the edge overcoat occurs due to the molten metal staying at the edge portion and forming a lump.
- the edge portion of the steel strip surface is top dross (floating on the pot bath surface). Zinc lump) tends to be rolled up, so that the edge overcoat tends to deteriorate. Therefore, the effect of suppressing the edge overcoat according to the present invention is particularly remarkably obtained under the above conditions.
- the header pressure P is preferably 1 kPa or more.
- the height B is preferably -10 mm or more. This can reduce the possibility that the baffle plate contacts the support roll 18 in the molten metal bath or the baffle plate obstructs the flow of dross in the bath and increases dross defects.
- the height of the bath surface slightly changes during operation. Specifically, the height of the bath surface gradually decreases due to the removal of the molten zinc by the steel strip, but when the height of the bath surface drops by about several mm, the ingot mass of the bath composition is reduced during operation. Add gradually so that the bath height is the original height.
- the bath height can be constantly monitored with a laser displacement meter.
- the manufacturing method of the hot-dip metal-plated steel strip of the present embodiment obtains the effect of suppressing the edge overcoat by performing wiping in a state where the height B is +50 mm or less. It is preferable to maintain the state where B is +50 mm or less, but it is not limited to this, and includes a case where B temporarily exceeds +50 mm during operation.
- the continuous hot-dip metal plating equipment of the present embodiment is controlled so that the height B is always kept at +50 mm or less during operation.
- the height of the upper ends of the baffle plates 40 and 42 is not particularly limited as long as it is higher than the position of the gas injection port 28, but from the viewpoint of reliably avoiding direct collision of the gas, the height of the gas injection port 28 is reduced. It is preferable that the height is 10 mm or more higher than the gap center position, and it is preferable that the height is 300 mm or less than the gap center position of the gas injection port 28 from the viewpoint of not arranging the baffle plate at an unnecessary portion.
- distance E between the widthwise end of the steel strip and the baffle plate is preferably 10 mm or less, more preferably 5 mm or less. Thereby, direct collision of the opposed jet can be more reliably prevented. Further, from the viewpoint of reducing the possibility that the steel strip comes into contact with the baffle plate when meandering, the distance E is preferably 3 mm or more.
- the material of the baffle plate is not particularly limited. However, in this embodiment, since the baffle plate is close to the bath surface, there is a possibility that top dross and splash (spray of molten zinc) adhere to the alloy and adhere to the baffle plate. When the baffle plate is immersed in the bath, it is necessary to consider not only the above alloying but also thermal deformation. From this viewpoint, examples of the material of the baffle plate include a steel plate obtained by applying a boron nitride-based spray, which easily repels zinc, and SUS316L, which hardly reacts with zinc. Further, ceramics such as alumina, silicon nitride, and silicon carbide are desirable because they can suppress both alloying and thermal deformation.
- the nozzle height H is low.
- the lower the nozzle height H the higher the temperature of the molten metal at the stagnation point and the lower the viscosity, so that wiping can be performed with a low header pressure and edge overcoat is less likely to occur.
- the length of the baffle plate can be shortened, the rigidity of the baffle plate can be maintained.
- the nozzle height H is preferably equal to or greater than 50 mm, more preferably equal to or greater than 80 mm, and is preferably equal to or less than 450 mm, and more preferably equal to or less than 250 mm.
- the pair of gas wiping nozzles 20A and 20B are directed downward with respect to the horizontal plane so that the angle ⁇ between the gas injection port 28 and the horizontal plane is 10 degrees or more and 75 degrees or less.
- the “angle ⁇ between the gas injection port and the horizontal plane” refers to a portion (parallel portion) where the upper nozzle member 24 and the lower nozzle member 26 face each other to form a slit as shown in FIG.
- the extending direction of the parallel portion means an angle formed by a horizontal plane.
- the nozzle angle ⁇ By setting the nozzle angle ⁇ to 10 degrees or more, the shearing force due to the wiping gas can be increased, the phenomenon that the wiping force is weakened is more easily prevented, and a remarkable edge overcoat suppressing effect can be obtained.
- the nozzle angle ⁇ exceeds 75 degrees, an unstable pressure pool may be generated and hot water wrinkles may be easily generated. Therefore, it is preferable that the nozzle angle ⁇ be 75 degrees or less.
- the distance d between the nozzle tip and the steel strip is not particularly limited, but is set to 3 mm or more from the viewpoint of reducing the possibility that the nozzle tip contacts the steel strip to save wiping gas. From the viewpoint, it is preferable to set it to 50 mm or less.
- the gas injected from the gas wiping nozzle is not particularly limited, and may be, for example, air, but may be an inert gas.
- an inert gas By using an inert gas, oxidation of the molten metal on the surface of the steel strip can be prevented, so that uneven viscosity of the molten metal can be further suppressed.
- the inert gas can include, but is not limited to, one or more of nitrogen, argon, helium, and carbon dioxide.
- the components of the molten metal include 1.0 to 10% by mass of Al, 0.2 to 1% by mass of Mg, and 0 to 0.1% by mass of Ni, with the balance being Zn and unavoidable impurities. Is preferred. It has been confirmed that when Mg is contained as described above, the molten metal is easily oxidized and the amount of generated top dross is increased, so that an edge overcoat is easily generated. Therefore, when the molten metal has the above component composition, the effect of suppressing the edge overcoat of the present invention is remarkably exhibited. Further, even when the composition of the molten metal is 5% by mass Al—Zn or 55% by mass Al—Zn, the effect of suppressing the edge overcoat of the present invention can be obtained.
- a hot-dip galvanized steel sheet As the hot-dip galvanized steel strip manufactured by the manufacturing method and the plating equipment of the present invention, a hot-dip galvanized steel sheet can be mentioned. And galvanized steel sheet (GA) subjected to alloying treatment.
- Example 1 A production test of a hot-dip galvanized steel strip was performed on a hot-dip galvanized steel strip manufacturing line.
- the plating equipment shown in FIG. 1 was used.
- the gas wiping nozzle used had a nozzle gap of 1.2 mm.
- the composition of the plating bath, the height B of the lower end of the baffle plate with respect to the bath surface, the nozzle angle ⁇ , the wiping gas pressure (header pressure) P, the distance d between the nozzle tip and the steel strip, the steel strip speed L is as shown in Table 1.
- the upper end of the baffle plate was located 70 mm higher than the center of the gap of the gas injection port.
- the height H of the nozzle from the bath surface was 200 mm.
- the material of the baffle plate was silicon nitride, the plate thickness was 3 mm, and the distance E between the end of the steel strip in the width direction and the baffle plate was 5 mm.
- a method of supplying gas to the gas wiping nozzle As a method of supplying gas to the gas wiping nozzle, a method of supplying gas pressurized to a predetermined pressure by a compressor to the nozzle header was adopted.
- the gas type was air, and the wiping gas temperature was 100 ° C.
- a steel strip having a thickness of 1.2 mm and a width of 1000 mm was passed at a predetermined steel strip speed L to produce a hot-dip galvanized steel strip.
- the edge overcoat ratio R on both sides of the manufactured hot-dip galvanized steel strip was determined and evaluated by the following procedure.
- Table 1 shows the target adhesion amount CW (g / m 2 ) of the total on both sides at each level.
- the galvanized steel strip produced in each level the actual deposition amount of the double-sided total actual deposition amount CWc (g / m 2) and the steel edge portions of both sides sum of the steel plate center CWe a (g / m 2)
- the measurement was performed and the results are shown in Table 1.
- the measurement of CWc and CWe was performed in accordance with JIS G3302 for one location on each side.
- the edge overcoat ratio R was calculated as (CWe / CWc-1) ⁇ 100 (%). Table 1 shows the results. Table 1 also shows, for each plating type, the “edge overcoat improvement rate” with respect to the edge overcoat rate when no baffle plate was used. However, for plating type B, the improvement rates for Nos. 9 to 13 and 18 to 23 are based on No. 8, and the improvement rates for Nos. 15 to 17 are based on No. 14. is there. The level of the edge overcoat improvement rate of 50% or more was regarded as acceptable, and the level of less than 50% was rejected.
- the edge overcoat rate R is low, the edge overcoat improvement rate is 50% or more, and the quality of the plated steel sheet is good.
- the edge overcoat ratio R was large, and the edge overcoat improvement ratio was less than 50%.
- the effect was remarkably obtained when the height B of the lower end of the baffle plate with respect to the bath surface was within the range of the present invention.
- Example 2 Using the plating equipment shown in FIG. 1, the height B of the lower end of the baffle plate with respect to the bath surface was variously changed, and a production test of a hot-dip galvanized steel strip was performed.
- the gas wiping nozzle used had a nozzle gap of 1.2 mm.
- the composition of the plating bath was Al: 0.2% by mass, with the balance being zinc.
- the nozzle angle ⁇ was 0 degree
- the wiping gas pressure (header pressure) P was 8 kPa
- the distance d between the nozzle tip and the steel strip was 10 mm
- the steel strip speed L was 50 m / min.
- the upper end of the baffle plate was located 70 mm higher than the center of the gap of the gas injection port.
- the height H of the nozzle from the bath surface was 200 mm.
- the material of the baffle plate was silicon nitride
- the plate thickness was 3 mm
- the distance E between the end of the steel strip in the width direction and the baffle plate was 5 mm.
- the edge overcoat ratio R was determined in the same manner as in Example 1, and the relationship between the height B of the lower end of the baffle plate and the bath surface was summarized in FIG. In addition, the edge of the steel strip surface was observed with a camera, and the state of the molten metal at the edge was confirmed.
- the edge overcoat ratio R was high when the nozzle lower end height B was 60 mm or more, but was significantly reduced by setting the nozzle lower end height B to 50 mm or less. .
- the nozzle lower end height B was set to 60 mm or more, the molten metal staying at the edge portion and forming a lump was observed, whereas when the nozzle lower end height B was set to 50 mm or less, Such a massive molten metal was not observed, and the surface state of the molten metal was relatively uniform.
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Abstract
Description
[1]溶融金属浴に連続的に鋼帯を浸漬し、
前記溶融金属浴から引き上げられる鋼帯に、該鋼帯を挟んで配置される一対のガスワイピングノズルの、前記鋼帯の幅方向に沿って前記鋼帯よりも広幅に延在するスリット状のガス噴射口からガスを吹き付けて、該鋼帯の両面の溶融金属の付着量を調整して、
連続的に溶融金属めっき鋼帯を製造する溶融金属めっき鋼帯の製造方法であって、
前記鋼帯の幅方向両端部の外側に、かつ、表裏面の一部が前記一対のガスワイピングノズルの前記ガス噴射口と対向するように一対のバッフルプレートを設置し、
前記溶融金属浴の浴面に対する前記一対のバッフルプレートの下端の高さBを、鉛直方向上側を正として+50mm以下とすることを特徴とする溶融金属めっき鋼帯の製造方法。
前記溶融金属浴から連続的に引き上げられる鋼帯を挟んで配置され、前記鋼帯の幅方向に沿って前記鋼帯よりも広幅に延在するスリット状のガス噴射口を有し、該ガス噴射口から前記鋼帯に向けてガスを吹き付けて、前記鋼帯の両面のめっき付着量を調整する一対のガスワイピングノズルと、
前記鋼帯の幅方向両端部の外側に、かつ、表裏面の一部が前記一対のガスワイピングノズルの前記ガス噴射口と対向するように配置された一対のバッフルプレートと、
を有し、前記溶融金属浴の浴面に対する前記一対のバッフルプレートの下端の高さBが、鉛直方向上側を正として+50mm以下であることを特徴とする連続溶融金属めっき設備。
溶融亜鉛めっき鋼帯の製造ラインにおいて、溶融亜鉛めっき鋼帯の製造試験を行った。各発明例及び比較例で、図1に示すめっき設備を用いた。ガスワイピングノズルは、ノズルギャップが1.2mmのものを使用した。各発明例及び比較例で、めっき浴の組成、浴面に対するバッフルプレート下端の高さB、ノズル角度θ、ワイピングガス圧力(ヘッダ圧力)P、ノズル先端と鋼帯との距離d、鋼帯速度Lは、表1に示すものとした。バッフルプレート上端は、ガス噴射口のギャップ中心位置よりも70mm高い位置とした。ノズルの浴面からの高さHは200mmとした。バッフルプレートの材質は窒化ケイ素を使用し、板厚は3mm、鋼帯の幅方向端部とバッフルプレートとの距離Eは5mmとした。
図1に示すめっき設備を用い、浴面に対するバッフルプレート下端の高さBを種々変更して、溶融亜鉛めっき鋼帯の製造試験を行った。
10 スナウト
12 めっき槽
14 溶融金属浴
16 シンクロール
18 サポートロール
20A ガスワイピングノズル
20B ガスワイピングノズル
22 ノズルヘッダ
24 上ノズル部材
26 下ノズル部材
28 ガス噴射口
40 バッフルプレート
42 バッフルプレート
S 鋼帯
B 浴面に対するバッフルプレート下端の高さ
θ ガス噴射口が水平面となす角度
d ノズル先端と鋼帯間の距離
H ノズル高さ
E 鋼帯の幅方向端部とバッフルプレートとの距離
Claims (7)
- 溶融金属浴に連続的に鋼帯を浸漬し、
前記溶融金属浴から引き上げられる鋼帯に、該鋼帯を挟んで配置される一対のガスワイピングノズルの、前記鋼帯の幅方向に沿って前記鋼帯よりも広幅に延在するスリット状のガス噴射口からガスを吹き付けて、該鋼帯の両面の溶融金属の付着量を調整して、
連続的に溶融金属めっき鋼帯を製造する溶融金属めっき鋼帯の製造方法であって、
前記鋼帯の幅方向両端部の外側に、かつ、表裏面の一部が前記一対のガスワイピングノズルの前記ガス噴射口と対向するように一対のバッフルプレートを設置し、
前記溶融金属浴の浴面に対する前記一対のバッフルプレートの下端の高さBを、鉛直方向上側を正として+50mm以下とすることを特徴とする溶融金属めっき鋼帯の製造方法。 - 前記高さBを-10mm以上とする、請求項1に記載の溶融金属めっき鋼帯の製造方法。
- 前記一対のガスワイピングノズルは、前記ガス噴射口が水平面となす角度θが10度以上75度以下となるように、該水平面に対して下向きに設置される、請求項1又は2に記載の溶融金属めっき鋼帯の製造方法。
- 前記溶融金属の成分は、Al:1.0~10質量%、Mg:0.2~1質量%、Ni:0~0.1質量%を含有し、残部がZn及び不可避的不純物からなる、請求項1~3のいずれか一項に記載の溶融金属めっき鋼帯の製造方法。
- 溶融金属を収容し、溶融金属浴を形成しためっき槽と、
前記溶融金属浴から連続的に引き上げられる鋼帯を挟んで配置され、前記鋼帯の幅方向に沿って前記鋼帯よりも広幅に延在するスリット状のガス噴射口を有し、該ガス噴射口から前記鋼帯に向けてガスを吹き付けて、前記鋼帯の両面のめっき付着量を調整する一対のガスワイピングノズルと、
前記鋼帯の幅方向両端部の外側に、かつ、表裏面の一部が前記一対のガスワイピングノズルの前記ガス噴射口と対向するように配置された一対のバッフルプレートと、
を有し、前記溶融金属浴の浴面に対する前記一対のバッフルプレートの下端の高さBが、鉛直方向上側を正として+50mm以下であることを特徴とする連続溶融金属めっき設備。 - 前記高さBが-10mm以上である、請求項5に記載の連続溶融金属めっき設備。
- 前記一対のガスワイピングノズルは、前記ガス噴射口が水平面となす角度θが10度以上75度以下となるように、該水平面に対して下向きに設置される、請求項5又は6に記載の連続溶融金属めっき設備。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004059943A (ja) * | 2002-07-25 | 2004-02-26 | Nippon Steel Corp | 溶融金属めっきの目付量制御方法 |
JP2014181361A (ja) * | 2013-03-18 | 2014-09-29 | Nippon Steel & Sumitomo Metal | ガスワイピング装置 |
JP2016204694A (ja) * | 2015-04-20 | 2016-12-08 | Jfeスチール株式会社 | 溶融金属めっき鋼帯の製造装置及び製造方法 |
WO2018012132A1 (ja) * | 2016-07-13 | 2018-01-18 | Jfeスチール株式会社 | 溶融金属めっき鋼帯の製造方法及び連続溶融金属めっき設備 |
JP2018178154A (ja) * | 2017-04-05 | 2018-11-15 | 新日鐵住金株式会社 | 溶融亜鉛めっきラインのワイピングノズル部におけるエッジマスク遮蔽板及び溶融亜鉛飛散防止方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10237616A (ja) * | 1997-02-20 | 1998-09-08 | Nisshin Steel Co Ltd | 良好な表面肌をもつ溶融亜鉛めっき鋼帯の製造方法 |
JPH11279736A (ja) * | 1998-03-30 | 1999-10-12 | Nisshin Steel Co Ltd | 厚目付けに適したガスワイピング方法 |
KR100502816B1 (ko) | 2001-03-15 | 2005-07-20 | 제이에프이 스틸 가부시키가이샤 | 용융도금 금속스트립의 제조방법 및 그 장치 |
JP5812581B2 (ja) | 2010-07-13 | 2015-11-17 | スチールプランテック株式会社 | バッフルプレートユニットおよびそれを用いたガスワイピング装置 |
JP6011740B2 (ja) * | 2014-10-08 | 2016-10-19 | Jfeスチール株式会社 | 連続溶融金属めっき方法および溶融亜鉛めっき鋼帯ならびに連続溶融金属めっき設備 |
JP6561010B2 (ja) * | 2016-04-28 | 2019-08-14 | Primetals Technologies Japan株式会社 | 溶融金属めっき設備及び方法 |
KR101988772B1 (ko) * | 2017-12-26 | 2019-06-12 | 주식회사 포스코 | 가스 와이핑 장치 |
-
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004059943A (ja) * | 2002-07-25 | 2004-02-26 | Nippon Steel Corp | 溶融金属めっきの目付量制御方法 |
JP2014181361A (ja) * | 2013-03-18 | 2014-09-29 | Nippon Steel & Sumitomo Metal | ガスワイピング装置 |
JP2016204694A (ja) * | 2015-04-20 | 2016-12-08 | Jfeスチール株式会社 | 溶融金属めっき鋼帯の製造装置及び製造方法 |
WO2018012132A1 (ja) * | 2016-07-13 | 2018-01-18 | Jfeスチール株式会社 | 溶融金属めっき鋼帯の製造方法及び連続溶融金属めっき設備 |
JP2018178154A (ja) * | 2017-04-05 | 2018-11-15 | 新日鐵住金株式会社 | 溶融亜鉛めっきラインのワイピングノズル部におけるエッジマスク遮蔽板及び溶融亜鉛飛散防止方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023037881A1 (ja) * | 2021-09-10 | 2023-03-16 | Jfeスチール株式会社 | 溶融金属めっき鋼帯の製造方法 |
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