WO2012056934A1 - ガスワイピング装置 - Google Patents
ガスワイピング装置 Download PDFInfo
- Publication number
- WO2012056934A1 WO2012056934A1 PCT/JP2011/073882 JP2011073882W WO2012056934A1 WO 2012056934 A1 WO2012056934 A1 WO 2012056934A1 JP 2011073882 W JP2011073882 W JP 2011073882W WO 2012056934 A1 WO2012056934 A1 WO 2012056934A1
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- WO
- WIPO (PCT)
- Prior art keywords
- gas wiping
- wiping nozzle
- nozzle
- gas
- extending
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/06—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface with a blast of gas or vapour
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
- B05C3/125—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length the work being a web, band, strip or the like
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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
- C23C2/003—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
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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
- C23C2/04—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
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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
- C23C2/20—Strips; Plates
Definitions
- This invention relates to the gas wiping apparatus which suppresses the splash adhesion to a steel strip.
- a steel strip and a gas wiping nozzle for injecting gas are surrounded by a seal box, and the oxygen concentration in the seal box is controlled within a specified value (for example, within 1%), thereby Can prevent rough skin.
- a specified value for example, within 1%
- a band (steel band) and a gas wiping nozzle are enclosed, and an enclosure including an outlet portion of the band is provided in the enclosure.
- an enclosure including an outlet portion of the band is provided in the enclosure.
- Arranged in contact with at least one lower end surface of the gas wiping nozzle, leaving an opening where the strip travels, and separating and partitioning the enclosure into an upper space and a lower space in which the gas wiping nozzle is disposed A pair of baffle plates arranged opposite to each other with the band-like body interposed therebetween, and a wiping gas discharge port connected to the lower space of the surrounding body and connected to the suction and exhaust means, thereby allowing splash to the steel band The prevention of adhesion is aimed at.
- a hot-dip Zn—Al—Mg-based plated steel sheet using a plating bath containing appropriate amounts of Al and Mg in Zn is superior in corrosion resistance compared to other Zn-based plated steel sheets.
- Application cases in industrial fields such as housing and electrical machinery are increasing.
- a Zn 11 Mg 2 phase (Al / Zn / Zn 11 Mg 2 ternary eutectic substrate itself, Zn 11 Mg 2 system phase in the matrix is [Al primary crystal] comprising a mixture and / or the plain ground to the [Al primary crystal] [Zn single phase] and is mixed Zn 11 Mg 2 system, The phase of crystallization occurs locally.
- This locally crystallized Zn 11 Mg 2 phase is more likely to discolor than the Zn 2 Mg phase, and if left undisturbed, this portion has a very noticeable color tone, and the molten Zn—Al—Mg Remarkably deteriorates the surface appearance of the plated steel sheet.
- this Zn 11 Mg 2 phase is crystallized locally, a phenomenon occurs in which the crystallized portion is preferentially corroded.
- the hot-dip Zn-Al-Mg-based plated steel sheets have a glossy and beautiful surface appearance, so even fine spot patterns are conspicuous. The value will be significantly reduced.
- the passage of the steel strip above the nozzle surface of the gas wiping nozzle (the surface connecting the tip portions of the gas wiping nozzles arranged opposite to each other) It is necessary to prevent the splash from turning around. In order to prevent the splash from sneaking toward the path of the steel strip above the nozzle surface, it is preferable to seal all parts in the seal box except between the opposing gas wiping nozzles. It is.
- an object of the present invention is a gas wiping apparatus having a box-like body surrounding a steel strip and a gas wiping nozzle, and capable of suppressing splash adhesion to the steel strip after gas wiping. Is to provide.
- a gas wiping apparatus includes a first gas wiping nozzle disposed oppositely across the steel strip in order to remove excess molten metal adhering to the surface of the steel strip pulled up from the molten metal plating bath.
- a second gas wiping nozzle a first tubular member provided along the width direction of the steel strip, connected to the first wiping nozzle, and provided along the width direction of the steel strip, A second tubular member connected to a second wiping nozzle; and a box surrounding the first gas wiping nozzle, the second gas wiping nozzle, the first tubular member and the second tubular member.
- first partition member having one end fixed to the outer wall of the first tubular member and the other end fixed to the inner wall of the box-like body, and one end to the outer wall of the second tubular member.
- Fixed A second partition member having the other end fixed to the inner wall of the box-shaped body, wherein the second gas wiping nozzle is disposed from one end in the width direction of the first gas wiping nozzle.
- a first extending member extending toward the direction of the second gas extending from the other end in the width direction of the first gas wiping nozzle toward the second gas wiping nozzle.
- An extending member, a third extending member extending from one end of the second gas wiping nozzle in the width direction toward the first gas wiping nozzle, and the second gas wiping nozzle.
- a fourth extending member extending from the other end in the width direction toward the first gas wiping nozzle, and at least the tip of the first extending member and the third extending member Tip of member Are arranged so as to overlap in the vertical direction of the device, and at least the tip of the second extending member and the tip of the fourth extending member are arranged to overlap in the vertical direction of the device. .
- the first partition member seals the space between the outer wall of the first tubular member and the inner wall of the box-shaped body, and the second partition member The space between the outer wall of the tubular member and the inner wall of the box-shaped body is sealed. That is, the first tubular member and the inner wall of the box-shaped body are directed toward the path of the steel strip above the nozzle surface connecting the tip portion of the first gas wiping nozzle and the tip portion of the second gas wiping nozzle. The splash can be prevented from wrapping around or between the second tubular member and the inner wall of the box-shaped body.
- splash between the first gas wiping nozzle and the second gas wiping nozzle at both ends in the width direction of the gas wiping nozzles 26a and 26b, toward the path of the steel strip above the nozzle surface. Can be prevented. That is, the splash generated below the nozzle surface is from the region excluding the nozzle widths of the first gas wiping nozzle and the second gas wiping nozzle arranged opposite to each other, and the steel strip above the nozzle surface is It becomes possible to prevent going around the road. Therefore, even when a box-shaped body surrounding the first gas wiping nozzle and the second gas wiping nozzle is provided, excess molten metal is removed by the first gas wiping nozzle and the second gas wiping nozzle. It can suppress more that a splash adheres to the steel strip surface after doing.
- At least one of the first gas wiping nozzle and the second gas wiping nozzle can be changed within a predetermined range. Even when one is parallel to the other and the distance between the first gas wiping nozzle and the second gas wiping nozzle is at a maximum distance within the predetermined range, at least the The distal end portion of the first extending member and the distal end portion of the third extending member are disposed so as to overlap in the vertical direction of the apparatus, and at least the distal end portion of the second extending member and the fourth extending member It is preferable that it is arrange
- the width direction of the gas wiping nozzles 26a and 26b can be obtained even when the distance between the first gas wiping nozzle and the second gas wiping nozzle is at the maximum distance. At both ends, it is possible to prevent wrapping around the steel strip path above the nozzle surface.
- the first extending member and the third extending portion are always provided. Since the second extending member and the fourth extending portion do not always interfere without interfering with each other, the parallel movement of the first gas wiping nozzle and / or the second gas wiping nozzle may be inhibited. Absent. As a result, it is possible to always prevent the steel gas from going around toward the path of the steel strip above the nozzle surface regardless of the inter-nozzle distance between the first gas wiping nozzle and the second gas wiping nozzle. .
- the device of the present invention As a gas wiping device that controls the plating thickness attached to the steel strip by blowing gas onto the steel strip immersed in the molten metal, it prevents the splash wrapping around the outlet side of the gas wiping nozzle, Since the adhesion of the splash to the steel strip after gas wiping can be suppressed, defects in the surface appearance due to the splash adhesion can be greatly reduced.
- a spatter adheres to the steel strip after gas wiping, where the plated metal is in an unsolidified state, causing a Zn 11 Mg 2 phase to crystallize and create a speckled pattern.
- the gas wiping apparatus can surely suppress the occurrence of spotted patterns and the deterioration of corrosion resistance.
- the occurrence of spotted patterns in the hot-dip Zn-Al-Mg-based steel sheet is due to remelting in the steel strip before gas wiping where the plated metal is in an unsolidified state and no spotted pattern is generated even if splash is attached.
- Japanese Patent Laid-Open No. 62-193671 Japanese Patent Laid-Open No. 62-193671
- FIG. 1 A is a perspective view of the box-shaped body in the gas wiping apparatus shown in FIG. 1
- (b) is a perspective view for demonstrating the internal structure of the box-shaped body shown to (a). It is an enlarged view of the box-shaped body in the gas wiping apparatus shown in FIG.
- the gas wiping device 100 As shown in FIG. 1, the gas wiping device 100 according to the present embodiment is disposed on the upper part of the plating bath 10 in which the molten metal 11 is stored, and the box-like body 20 placed on the upper portion of the plating bath 10. It is equipped with.
- the main roller 12 and the sub rollers 13 a and 13 b for delivering or supporting the steel strip 30 to the upper portion of the plating bath 10, and the steel strip 30 from the outside (for example, a furnace) into the plating bath 10. And a snout 14 for delivery.
- the box-shaped body 20 includes a substantially cylindrical main body 21, closing portions 22 and 23 provided so as to close both ends in the width direction of the main body 21, and molten metal.
- the steel strip 30 plated on the surface has a delivery port 24 for delivering the steel strip 30 from the inside to the outside.
- a seal curtain 31 is provided on the box-shaped body 20. The seal curtain 31 is closed when the plated steel strip is manufactured to ensure airtightness, and is opened when the dross in the seal box is discharged.
- the gas wiping device 100 includes tubular members 25a and 25b provided inside the box-like body 20 along the width direction of the steel strip 30, and tubular members.
- Gas wiping nozzles (first gas wiping nozzle 26a and second gas wiping nozzle 26b) provided so as to oppose steel strip 30 to each of 25a and 25b, and outer walls of tubular members 25a and 25b, respectively
- the bellows-shaped curtains 27a and 27b one end of which is fixed to the inner wall of the box-like body 20, and the extending member that extends toward the gas wiping nozzle 26b at both ends of the gas wiping nozzle 26a (The first extending member 28a and the second extending member 28b) and the gas wiping nozzle 26a toward both ends of the gas wiping nozzle 26a.
- the tubular members 25a and 25b are connected to gas pipes (not shown) for sending gas from the outside to the inside of the tubular members 25a and 25b.
- the closing portions 22 and 23 have a bellows structure so that the gas pipe can move in the vertical and horizontal directions in FIG.
- the gas wiping nozzle 26a communicates with the inside of the tubular member 25a, and the gas sent from the outside to the inside of the tubular member 25a through the gas pipe (not shown) is supplied from the tip of the gas wiping nozzle 26a to the steel. It is configured to eject toward the surface of the band 30.
- the tubular member 25b and the gas wiping nozzle 26b communicate with each other, and the gas sent from the outside to the inside of the tubular member 25b through the gas pipe (not shown) from the tip of the gas wiping nozzle 26b. It is configured to eject toward the surface of the steel strip 30.
- the tubular member 25a is configured to be movable in the vertical and horizontal directions in FIG. 3.
- the gas wiping nozzle 26a is moved relative to the gas wiping nozzle 26b.
- interval of the gas wiping nozzle 26a and the gas wiping nozzle 26b is adjusted.
- the tubular member 25b is configured to be movable in the vertical and horizontal directions on the paper surface of FIG. 3 in the same manner as the tubular member 25a.
- the distance between the gas wiping nozzle 26a and the gas wiping nozzle 26b is set within a predetermined range. It can be changed.
- the bellows-shaped curtains 27a and 27b which are partition members, are made of an elastic heat-resistant material, and may be a metallic member or a non-woven fabric.
- the bellows-shaped curtains 27a and 27b between the tubular member 25a and the inner wall of the box-shaped body 20 (inner wall on the tubular member 25a side) and between the tubular member 25b and the inner wall of the box-shaped body 20 (inner wall on the tubular member 25b side).
- the partition member in addition to the bellows-shaped curtain, for example, a partition plate fixed to the outer wall of the tubular member 25 and a partition plate fixed to the inner wall of the box-shaped body 20 are arranged so as to overlap in the vertical direction. May be.
- the extending members 28a, 28b, 29a, and 29b are heat-resistant plate-like members, and one end thereof is connected and fixed to the tubular member as shown in FIGS.
- the first extending member 28a extending toward the gas wiping nozzle 26b at one end in the width direction of the gas wiping nozzle 26a extends toward the gas wiping nozzle 26a at one end in the width direction of the gas wiping nozzle 26b.
- the third extending member 29a is opposed to the third extending member 29a while being shifted in the vertical direction. Further, the distance between the gas wiping nozzle 26a and the gas wiping nozzle 26b varies as described above, but even when the distance between the gas wiping nozzle 26a and the gas wiping nozzle 26b is at the maximum distance,
- the leading end of the first extending member 28a and the leading end of the third extending member 29a are provided so as to overlap each other.
- the second extending member 28b extending toward the gas wiping nozzle 26b at the other end in the width direction of the gas wiping nozzle 26a is in the direction of the gas wiping nozzle 26a at the other end in the width direction of the gas wiping nozzle 26b. It is opposed to the fourth extending member 29b extending toward the top in the vertical direction.
- the distance between the gas wiping nozzle 26a and the gas wiping nozzle 26b is variable, but even if the distance between the gas wiping nozzle 26a and the gas wiping nozzle 26b is at the maximum distance, the second extension is performed.
- the distal end portion of the installation member 28b and the distal end portion of the fourth extending member 29b are provided so as to overlap each other.
- the second extending member 28b and the fourth extending member 29b can be sealed.
- the upper limit position is set to +50 mm is that if it exceeds +50 mm, it becomes difficult to prevent the splash generated by gas wiping from adhering to the surface of the steel strip after wiping. If it is less than ⁇ 50 mm, it becomes difficult to prevent the splash from adhering to the surface of the steel strip after wiping, and the splash scattered from the edge of the steel strip adheres to the extending members 28 and 29. This is because there is a risk of malfunction due to contact with the steel sheet or interference between the extended members.
- the vertical gap between the extending member 28 and the extending member 29 is as narrow as possible.
- the tip portion may be formed in a tapered shape having an inclination in the left-right direction in FIG.
- the steel strip 30 is fed from the outside into the plating bath 10 via the snout 14 and immersed in the liquid of the molten metal 11 in the plating bath 10.
- the steel strip 30 is delivered to the inside of the box-shaped body 20 via the main roller 12 and the sub rollers 13a and 13b.
- the steel strip 30 delivered to the inside of the box-shaped body 20 passes between the gas wiping nozzle 26a and the gas wiping nozzle 26b, and passes through the outlet 24 (see FIG. 2A) to the outside of the box-shaped body 20. Is sent to.
- the gas wiping nozzle 26a and the gas wiping nozzle 26b both move up, down, left and right in FIG. 3, so that the gas wiping nozzles at both ends in the width direction of the gas wiping nozzles 26a, 26b. It is difficult to seal between 26a and the gas wiping nozzle 26b.
- one end side of the gas wiping nozzles 26a and 26b is sealed by the first extending member 28a and the third extending member 29a, and the other end of the gas wiping nozzles 26a and 26b.
- the splash 40 scatters and goes around from both ends of the gas wiping nozzles 26a and 26b toward the upper space 50 inside the box-shaped body 20. Can be suppressed.
- the first distance no matter what the distance between the gas wiping nozzle 26a and the gas wiping nozzle 26b is (the maximum distance or the minimum distance). Since the extending member 28a and the third extending member 29a overlap each other, and the second extending member 28b and the fourth extending member 29b overlap each other, they do not interfere with each other, and as a result, the gas wiping nozzle The parallel movement of 26a or / and the gas wiping nozzle b is not hindered.
- both end portions in the width direction of the gas wiping nozzles 26a and 26b are always sealed regardless of the distance between these nozzles, and the splash generated below the nozzle surface is in the path of the steel strip 30 above the nozzle surface. It is possible to suppress turning around.
- the splash bellows-like curtains 27a and 27b suppress the splash 40 from being scattered in the upper space 50 inside the box-like body 20. Thereby, it can suppress that the splash which generate
- the bellows-shaped curtains 27a and 27b are formed in the width direction of the box-shaped body 20 (the width direction of the steel strip 30 and the width direction of the steel strip 30) from the viewpoint of preventing the splash from flowing toward the path of the steel strip 30 above the nozzle surface. It is preferable that it is provided over the entire area.
- gas for example, nitrogen gas
- the splash generated below the nozzle surface is a path of the steel strip 30 above the nozzle surface. It is possible to suppress the sneaking toward the side.
- Example> A molten Zn-6 mass% Al-2.9 mass% Mg-based plated steel sheet was produced using the gas wiping apparatus shown in FIG.
- a molten Zn-6 mass% Al-2.9 mass% Mg-based plated steel sheet was manufactured using a gas wiping apparatus in which the extending members 28 and 29 were removed from FIG.
- Table 1 shows the ratio of the number of spots per unit area of the spotted pattern in which the Zn 11 Mg 2 phase crystallizes for the plated steel sheet produced under each of these conditions. The ratio of the number of occurrences is set to 1 for the comparative example.
- the curtain is used between the tubular member 25a and the inner wall of the box-like body 20 (inner wall on the tubular member 25a side), and the tubular member 25b and the box-like shape. Since the space between the body 20 and the inner wall (the inner wall on the tubular member 25b side) of the body 20 is sealed, the splash can be prevented from wrapping toward the path of the steel strip 30 above the nozzle surface. In addition, it is possible to prevent splash from entering the path of the steel strip 30 above the nozzle surface from between the gas wiping nozzle 26a and the gas wiping nozzle 26b at both ends in the width direction.
- the splash generated below the nozzle surface moves from the region excluding the nozzle widths of the gas wiping nozzle 26a and the gas wiping nozzle 26b arranged to face each other to the path of the steel strip 30 above the nozzle surface. It is possible to prevent sneaking around. Therefore, even when the box-shaped body 20 surrounding the gas wiping nozzle 26a and the gas wiping nozzle 26b is provided, the steel strip 30 after the excess molten metal is removed by the gas wiping nozzle 26a and the gas wiping nozzle 26b is provided. It is possible to further prevent the splash from adhering to the surface, and to suppress an increase in the number of splash spots.
- the distance between the nozzles of the gas wiping nozzle 26a and the gas wiping nozzle 26b is any, it is possible to prevent the gas wiping nozzle 26a and the gas wiping nozzle 26b from going around toward the path of the steel strip above the nozzle surface.
- the parallel movement of the gas wiping nozzle 26a and / or the gas wiping nozzle 26b is not hindered.
- each of the extending members 28a, 28b, 29a, and 29b is made of a plate-like member, but is not limited to that made of the plate-like member, and is a rod-like member or a cylindrical member.
- the first extending member and the third extending member may be arranged so that at least the distal end of the third extending member overlaps the vertical direction of the apparatus, and at least the distal end of the second extending member and the fourth extending member. Any member may be used as long as it is arranged so as to overlap the tip of the installation member in the vertical direction of the apparatus and can suppress the adhesion of splash.
- each of the extending members 28a, 28b, 29a, and 29b is fixed to the tubular member and the gas wiping nozzle. It may be possible to replace it. Thereby, it can be set as the gas wiping apparatus which is easy to maintain.
- a state is shown in which the vicinity of the distal end portion of the extending member 29b is arranged so as to overlap in the vertical direction of the apparatus.
- the tip of the extension member 28a and the tip of the extension member 29a are arranged so as to overlap in the vertical direction of the apparatus, and at least the tip of the extension member 28b and the tip of the extension member 29b. Need only be arranged so as to overlap in the vertical direction of the apparatus, and is not limited to the positional relationship shown in FIGS.
- the vicinity of the distal end portion of the extending member 28a and the vicinity of the distal end portion of the extending member 29a are arranged so as to sufficiently overlap in the vertical direction of the apparatus, and the vicinity of the distal end portion of the extending member 28b and the extending member 29b are arranged. Needless to say, it is possible to further suppress the adhesion of the splash to the steel strip 30 when it is arranged so that the vicinity of the tip of the steel plate is sufficiently overlapped in the vertical direction of the apparatus.
- the extension member 28a and the extension member 29a When it is necessary to provide a gap between the extending member 28b and the extending member 29b, a sealing material having excellent heat resistance is provided at the ends of the extending members 28a, 29a, 28b, 29b. It is effective to provide.
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Abstract
Description
溶融Znー6質量%Al-2.9質量%Mg系めっき鋼板を、図2(b)に示すガスワイピング装置を用いて製造した。また、比較例として、図2(b)から延設部材28,29を除いたガスワイピング装置を用いて溶融Znー6質量%Al-2.9質量%Mg系めっき鋼板を製造した。これらそれぞれの条件で製造しためっき鋼板について、Zn11Mg2系の相が晶出した斑点模様の単位面積あたりの発生個数の割合を表1に示す。なお、発生個数の割合は、比較例を1としている。この結果、本発明のガスワイピング装置を用いることで、スプラッシュによる斑点模様の発生を大幅に低減できることがわかる。
なお、本発明は上記実施形態に限定されるものではなく、本発明の趣旨に基づいて種々の変形が可能であり、これらを本発明の範囲から排除するものではない。例えば、上記実施形態において、延設部材28a,28b,29a,29bのそれぞれは板状部材からなるものであるが、該板状部材からなるものに限られず、棒状部材または筒状部材などであってもよく、少なくとも第1延設部材の先端部と第3延設部材の先端部とが装置上下方向に重なるように配置されているとともに、少なくとも第2延設部材の先端部と第4延設部材の先端部とが装置上下方向に重なるように配置され、スプラッシュ付着を抑制できるものであれば、どのような形状の部材からなるものであってもよい。
11 溶融金属
12 メインローラー
13a、13b サブローラー
14 送入口
20 箱状体
21 本体
22、23 閉塞部
24 送出口
25a、25b 管状部材
26a、26b ガスワイピングノズル
27a、27b 蛇腹状カーテン
28a、28b、29a、29b 延設部材
30 鋼帯
31 シールカーテン
40 スプラッシュ
50 上部空間
100 ガスワイピング装置
Claims (2)
- 溶融金属メッキ浴から引き上げられる鋼帯の表面に付着した過剰溶融金属を除去するために前記鋼帯を挟んで対向配置されている第1ガスワイピングノズルおよび第2ガスワイピングノズルと、
前記鋼帯の幅方向に沿って設けられ、前記第1のワイピングノズルに接続されている第1の管状部材と、
前記鋼帯の幅方向に沿って設けられ、前記第2のワイピングノズルに接続されている第2の管状部材と、
前記第1のガスワイピングノズル、前記第2のガスワイピングノズル、前記第1の管状部材および前記第2の管状部材を包囲する箱状体と、
前記第1の管状部材の外壁に一端が固定され、他端が前記箱状体の内壁に固定されている第1の仕切り部材と、
前記第2の管状部材の外壁に一端が固定され、他端が前記箱状体の内壁に固定されている第2の仕切り部材と、
を備えるガスワイピング装置であって、
前記第1のガスワイピングノズルの幅方向一端部から前記第2のガスワイピングノズルの方向に向かって延設されている第1延設部材と、
前記第1のガスワイピングノズルの幅方向他端部から前記第2のガスワイピングノズルの方向に向かって延設されている第2延設部材と、
前記第2のガスワイピングノズルの幅方向一端部から前記第1のガスワイピングノズルの方向に向かって延設されている第3延設部材と、
前記第2のガスワイピングノズルの幅方向他端部から前記第1のガスワイピングノズルの方向に向かって延設されている第4延設部材と、
をさらに備え、
少なくとも前記第1延設部材の先端部と前記第3延設部材の先端部とが装置上下方向に重なるように配置されているとともに、少なくとも前記第2延設部材の先端部と前記第4延設部材の先端部とが装置上下方向に重なるように配置されている
ことを特徴とするガスワイピング装置。 - 前記第1のガスワイピングノズルおよび前記第2のガスワイピングノズルは、互いの距離が所定の範囲内で変更可能となるように、これらのうち少なくともいずれか一方が他方に対して平行移動可能であって、
前記第1のガスワイピングノズルと前記第2のガスワイピングノズルとの間が前記所定の範囲内における最大距離にあるときであっても、少なくとも前記第1延設部材の先端部と前記第3延設部材の先端部とが装置上下方向に重なるように配置されているとともに、少なくとも前記第2延設部材の先端部と前記第4延設部材の先端部とが装置上下方向に重なるように配置されている
ことを特徴とする請求項1または2に記載のガスワイピング装置。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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BR112013010095-8A BR112013010095B1 (pt) | 2010-10-26 | 2011-10-18 | Dispositivo de limpeza a gás |
AU2011321686A AU2011321686B2 (en) | 2010-10-26 | 2011-10-18 | Gas wiping device |
CN201180052048.1A CN103180479B (zh) | 2010-10-26 | 2011-10-18 | 气体擦拭装置 |
ES11836070.0T ES2659824T3 (es) | 2010-10-26 | 2011-10-18 | Dispositivo de limpieza con gas |
EP11836070.0A EP2634283B1 (en) | 2010-10-26 | 2011-10-18 | Gas wiping device |
MX2013004713A MX2013004713A (es) | 2010-10-26 | 2011-10-18 | Dispositivo limpiador de gas. |
PL11836070T PL2634283T3 (pl) | 2010-10-26 | 2011-10-18 | Gazowe urządzenie czyszczące |
KR1020137013106A KR101367291B1 (ko) | 2010-10-26 | 2011-10-18 | 가스 와이핑 장치 |
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JP2010-239831 | 2010-10-26 | ||
JP2010239831 | 2010-10-26 | ||
JP2011-226292 | 2011-10-14 | ||
JP2011226292A JP5221732B2 (ja) | 2010-10-26 | 2011-10-14 | ガスワイピング装置 |
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WO2012056934A1 true WO2012056934A1 (ja) | 2012-05-03 |
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PCT/JP2011/073882 WO2012056934A1 (ja) | 2010-10-26 | 2011-10-18 | ガスワイピング装置 |
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US (1) | US9021982B2 (ja) |
EP (1) | EP2634283B1 (ja) |
JP (1) | JP5221732B2 (ja) |
KR (1) | KR101367291B1 (ja) |
CN (1) | CN103180479B (ja) |
AU (1) | AU2011321686B2 (ja) |
BR (1) | BR112013010095B1 (ja) |
ES (1) | ES2659824T3 (ja) |
MX (1) | MX2013004713A (ja) |
MY (1) | MY167050A (ja) |
PL (1) | PL2634283T3 (ja) |
TW (1) | TWI500812B (ja) |
WO (1) | WO2012056934A1 (ja) |
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US9863029B2 (en) * | 2012-08-01 | 2018-01-09 | Dongkuk Steel Mill Co., Ltd. | Apparatus for forming nitrogen cloud to produce hot dip coated steel sheet |
WO2014199194A1 (en) * | 2013-06-10 | 2014-12-18 | Arcelormittal Investigacion Y Desarrollo, S.L. | Installation for hot dip coating a metal strip comprising an adjustable confinement box |
US9816168B2 (en) | 2013-12-20 | 2017-11-14 | Arcelormittal | Method for producing a sheet having a ZnAlMg coating with optimized wiping |
CA2935047C (fr) * | 2013-12-20 | 2021-01-05 | Arcelormittal | Procede de realisation d'une tole a revetement znalmg avec un essorage optimise et tole correspondante |
NO2786187T3 (ja) | 2014-11-21 | 2018-07-28 | ||
DE102015216721B3 (de) * | 2015-09-01 | 2016-11-24 | Fontaine Engineering Und Maschinen Gmbh | Vorrichtung zum Behandeln eines Metallbandes |
DE102016222230A1 (de) | 2016-08-26 | 2018-03-01 | Sms Group Gmbh | Verfahren und Beschichtungseinrichtung zum Beschichten eines Metallbandes |
JP6396971B2 (ja) * | 2016-12-06 | 2018-09-26 | 日新製鋼株式会社 | 溶融めっき設備 |
CN106622854A (zh) * | 2016-12-23 | 2017-05-10 | 鞍山发蓝股份公司 | 采用浸漆方式生产包装用涂漆带钢的刮漆装置 |
DE102017109559B3 (de) | 2017-05-04 | 2018-07-26 | Fontaine Engineering Und Maschinen Gmbh | Vorrichtung zum Behandeln eines Metallbandes |
US11384419B2 (en) * | 2019-08-30 | 2022-07-12 | Micromaierials Llc | Apparatus and methods for depositing molten metal onto a foil substrate |
JP7398285B2 (ja) | 2020-01-24 | 2023-12-14 | 日鉄鋼板株式会社 | シールボックスを用いためっき金属板製造方法 |
US11642690B1 (en) * | 2021-11-05 | 2023-05-09 | GM Global Technology Operations LLC | Systems and methods for paint application during paint submersion |
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2011
- 2011-10-14 JP JP2011226292A patent/JP5221732B2/ja active Active
- 2011-10-18 MY MYPI2013001481A patent/MY167050A/en unknown
- 2011-10-18 CN CN201180052048.1A patent/CN103180479B/zh not_active Expired - Fee Related
- 2011-10-18 BR BR112013010095-8A patent/BR112013010095B1/pt not_active IP Right Cessation
- 2011-10-18 MX MX2013004713A patent/MX2013004713A/es active IP Right Grant
- 2011-10-18 ES ES11836070.0T patent/ES2659824T3/es active Active
- 2011-10-18 EP EP11836070.0A patent/EP2634283B1/en not_active Not-in-force
- 2011-10-18 PL PL11836070T patent/PL2634283T3/pl unknown
- 2011-10-18 KR KR1020137013106A patent/KR101367291B1/ko active IP Right Grant
- 2011-10-18 WO PCT/JP2011/073882 patent/WO2012056934A1/ja active Application Filing
- 2011-10-18 AU AU2011321686A patent/AU2011321686B2/en not_active Ceased
- 2011-10-26 TW TW100138848A patent/TWI500812B/zh not_active IP Right Cessation
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2013
- 2013-04-24 US US13/869,728 patent/US9021982B2/en active Active
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JP2012107321A (ja) | 2012-06-07 |
AU2011321686A1 (en) | 2013-05-02 |
EP2634283B1 (en) | 2017-11-29 |
MY167050A (en) | 2018-08-02 |
ES2659824T3 (es) | 2018-03-19 |
CN103180479B (zh) | 2014-07-16 |
EP2634283A4 (en) | 2016-04-27 |
KR20130069863A (ko) | 2013-06-26 |
AU2011321686B2 (en) | 2015-02-19 |
US9021982B2 (en) | 2015-05-05 |
JP5221732B2 (ja) | 2013-06-26 |
BR112013010095B1 (pt) | 2020-03-10 |
BR112013010095A2 (pt) | 2016-08-02 |
CN103180479A (zh) | 2013-06-26 |
MX2013004713A (es) | 2013-08-29 |
EP2634283A1 (en) | 2013-09-04 |
PL2634283T3 (pl) | 2018-05-30 |
KR101367291B1 (ko) | 2014-02-27 |
TWI500812B (zh) | 2015-09-21 |
US20130232811A1 (en) | 2013-09-12 |
TW201221692A (en) | 2012-06-01 |
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