US20200261957A1 - Warpage correction apparatus for metal strip and continuous plating facility for metal strip - Google Patents
Warpage correction apparatus for metal strip and continuous plating facility for metal strip Download PDFInfo
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- US20200261957A1 US20200261957A1 US16/757,598 US201716757598A US2020261957A1 US 20200261957 A1 US20200261957 A1 US 20200261957A1 US 201716757598 A US201716757598 A US 201716757598A US 2020261957 A1 US2020261957 A1 US 2020261957A1
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- Prior art keywords
- roll
- metal strip
- warpage
- correction
- strip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
- B21D1/05—Stretching combined with rolling
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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
- C23C2/003—Apparatus
- C23C2/0035—Means for continuously moving substrate through, into or out of the bath
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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
- C23C2/0038—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
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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
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
- C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating
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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
- C23C2/12—Aluminium 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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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
-
- 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 bridle roll 16 B is the downstream one of the bridle rolls 16 A, 16 B disposed at the outlet portion 4 of the furnace 3 .
- FIGS. 6 and 7 are graphs showing an example of a relationship between the apparent diameter D 2 of the correction roll 18 and the warpage amount w of the metal strip 2 at the exit side of the sink roll 20 of the warpage correction apparatus 1 according to Example and Comparative Example, respectively.
- FIG. 6 is a graph when the diameter D 1 of the bridle roll 16 B (fixed roll) is 800 mm, the diameter D 3 of the sink roll 20 is 2000 mm, D 3 /D 1 is 2.5 in the warpage correction apparatus 1 described above.
- FIG. 7 is a graph when D 1 is 800 mm, D 3 is 900 mm, D 3 /D 1 is 1.1 in the warpage correction apparatus 1 described above.
- “t” represents the thickness of the metal strip 2 .
- the warpage correction apparatus 1 may further include a controller (not shown) configured to adjust the pressing amount d 2 of the correction roll 18 toward the metal strip 2 based on a measurement result of the warpage amount by the warpage measuring device 12 .
- the metal strip may warp in the strip width direction (hereinafter, referred to as “C-warp” or simply “warpage”) at the exit side of each roll.
- C-warp the strip width direction
- the ratio D 3 /D 1 of the diameter D 3 of the sink roll to the diameter D 1 of the fixed roll increases, it is possible to expand the adjustable range of warpage amount in the strip width direction at the exit side of the sink roll by adjusting the apparent diameter D 2 of the correction roll, and it is possible to bring the warpage amount of a thicker metal strip close to zero.
- the bridle roll is generally disposed at the outlet portion of the furnace and thus tends to be a primary cause of warpage in the strip width direction at the entry side of the correction roll.
- an expression of relative or absolute arrangement such as “in a direction”, “along a direction”, “parallel”, “orthogonal”, “centered”, “concentric” and “coaxial” shall not be construed as indicating only the arrangement in a strict literal sense, but also includes a state where the arrangement is relatively displaced by a tolerance, or by an angle or a distance whereby it is possible to achieve the same function.
Abstract
A warpage correction apparatus for a metal strip to be used in a continuous plating facility for the metal strip includes a sink roll disposed downstream of a fixed roll, configured to change the conveying direction of the metal strip, with respect to a conveying direction of the metal strip and inside a molten metal pot for plating, and a correction roll disposed between the fixed roll and the sink roll and configured to correct warpage of the metal strip. A ratio D3/D1 of a diameter D3 of the sink roll to a diameter D1 of the fixed roll is not less than 1.5.
Description
- The present disclosure relates to a warpage correction apparatus for a metal strip and a continuous plating facility for a metal strip.
- In a case where a metal plate in strip form is continuously plated with molten metal (hot dip coating), it may be necessary to reduce warpage of the metal strip in the strip width direction at the outlet of a molten metal pot (plating bath) to flatten the metal strip for the sake of, for example, uniformly coating the metal strip with molten metal.
- As an example of a mechanism for reducing warpage of the metal strip in the strip width direction at the outlet of the molten metal pot,
Patent Documents - Further,
Patent Document 2 discloses that the pressing amount of this roll (snubber roll) upstream of the plating bath with respect to the pass line direction of the steel strip is adjustable by translationally moving the axis of the roll, and the pressing amount is adjusted in accordance with the width of the steel strip, for instance. -
- Patent Document 1: JPH2-54746A
- Patent Document 2: JPH3-166354A
- The present inventors have intensively studied and consequently found that, when a correction roll for warping a metal strip in a direction opposite to crossbow warpage of the metal strip after passing through the sink roll is provided upstream of a molten metal pot (plating bath) as in
Patent Documents - In view of the above, an object of at least one embodiment of the present invention is to provide a warpage correction apparatus for a metal strip and a continuous plating facility for a metal strip whereby it is possible to effectively correct warpage of the metal strip in the strip width direction even when the metal strip is relatively thick.
- A warpage correction apparatus according to at least one embodiment of the present invention for a metal strip to be used in a continuous plating facility for the metal strip comprises: a sink roll disposed downstream of a fixed roll with respect to a conveying direction of the metal strip and inside a molten metal pot for plating, the fixed roll being configured to change the conveying direction of the metal strip; and a correction roll disposed between the fixed roll and the sink roll and configured to correct warpage of the metal strip, and a ratio D3/D1 of a diameter D3 of the sink roll to a diameter D1 of the fixed roll is not less than 1.5.
- According to at least one embodiment of the present invention, there is provided a warpage correction apparatus for a metal strip and a continuous plating facility for a metal strip whereby it is possible to effectively correct warpage of the metal strip in the strip width direction even when the metal strip is relatively thick.
-
FIG. 1 is a schematic configuration diagram of a continuous plating facility according to an embodiment. -
FIG. 2 is a schematic diagram of a warpage correction apparatus according to an embodiment. -
FIG. 3 is a diagram for describing warpage amount of a metal strip. -
FIG. 4 is a graph showing an example of a relationship between diameter D3 of a sink roll and warpage amount of a metal strip by a warpage correction apparatus according to an embodiment. -
FIG. 5 is a graph showing an example of a relationship between diameter D3 of a sink roll and warpage amount of a metal strip by a warpage correction apparatus according to an embodiment. -
FIG. 6 is a graph showing an example of a relationship between apparent diameter D2 of a correction roll and warpage amount of a metal strip by a warpage correction apparatus according to Example. -
FIG. 7 is a graph showing an example of a relationship between apparent diameter D2 of a correction roll and warpage amount of a metal strip by a warpage correction apparatus according to Comparative Example. -
FIG. 8 is a diagram for describing an example of a method of calculating apparent diameter D2. - Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It is intended, however, that unless particularly identified, dimensions, materials, shapes, relative positions and the like of components described in the embodiments shall be interpreted as illustrative only and not intended to limit the scope of the present invention.
- First, with reference to
FIG. 1 , an overall configuration of a continuous plating facility according to some embodiments will be described. -
FIG. 1 is a schematic configuration diagram of a continuous plating facility according to an embodiment. As shown inFIG. 1 , thecontinuous plating facility 100 is a facility for continuously plating a metal strip 2 (e.g., steel strip) and includes afurnace 3 for heat treatment of themetal strip 2, a pot 6 (molten metal pot) forming aplating bath 8, and awiping nozzle 10 for adjusting the amount of a plating solution (molten metal) adhering to themetal strip 2. - The arrow in
FIG. 1 represents the conveying direction (moving direction) of themetal strip 2. - The
furnace 3 is a device for heat treatment of themetal strip 2 passing therethrough. For instance, thefurnace 3 may be configured to continuously anneal themetal strip 2. - The interior of the
furnace 3 is provided with a plurality ofrolls 14. Theserolls 14 serve to apply tension to themetal strip 2 or change the direction of themetal strip 2 to convey themetal strip 2. This enables continuous treatment of themetal strip 2. - The interior of the
furnace 3 may be provided with reducing or non-oxidizing gas. - An outlet portion 4 of the
furnace 3 shown inFIG. 1 is provided withbridle rolls metal strip 2. - The temperature in the
furnace 3 may vary with position. For instance, the outlet portion 4 of thefurnace 3 has a relatively low temperature, while a portion on the upstream side of the outlet portion 4 with respect to the conveying direction of the metal strip 2 (hereinafter, also simply referred to as “upstream side”), e.g., a portion in the vicinity of a burner, has a relatively high temperature. Thus, when the furnace has temperature distribution, tension to be applied to the metal strip varies depending on the position in the furnace. Therefore, thebridle rolls metal strip 2 in accordance with the temperature distribution in thefurnace 3, for instance. - Between the outlet portion 4 of the
furnace 3 and thepot 6, asnout 5 is provided which is a tubular member forming a passage for themetal strip 2. An end portion of thesnout 5 closer to thepot 6 is immersed in molten metal (plating bath 8) stored in thepot 6 to prevent leakage of gas from the inside to the outside of thefurnace 3 or entrance of gas (e.g., air) from the outside to the inside of thefurnace 3. - The
pot 6 stores molten metal as the plating solution and forms aplating bath 8. - In a case where the
metal strip 2 is a steel strip, the molten metal stored in thepot 6 may be, but not limited to, zinc, aluminum, or an alloy containing them. - The
pot 6 contains asink roll 20. Themetal strip 2 introduced from the inside of thefurnace 3 to theplating bath 8 through thesnout 5 is directed upward by thesink roll 20, so that themetal strip 2 with the molten metal adhering thereto moves to the upper side of thepot 6. - On the downstream side of the
sink roll 20 with respect to the conveying direction of the metal strip 2 (hereinafter, also simply referred to as “downstream side”), thewiping nozzle 10 and awarpage measuring device 12 are provided. - The
wiping nozzle 10 may extend along the strip width direction of themetal strip 2 and include a slit opening to the pass line of themetal strip 2. Thewiping nozzle 10 is configured to jet a gas to thetraveling metal strip 2, for example through the slit, to wipe and remove the molten metal excessively adhering to themetal strip 2 so as to make the thickness of the molten metal on the surface of themetal strip 2 uniform. - The
warpage measuring device 12 is a device for measuring the warpage amount of themetal strip 2 at the installation position of thewarpage measuring device 12. Thewarpage measuring device 12 may be disposed upstream or downstream of thewiping nozzle 10. Thewarpage measuring device 12 may include a plurality of position sensors arranged along the strip width direction of themetal strip 2 and each configured to measure a distance from themetal strip 2. - As described later, the
warpage correction apparatus 1 according to some embodiments may be configured to correct warpage of the strip based on a measurement result of thewarpage measuring device 12. - At least some of the plurality of
rolls 14 disposed in thefurnace 3 are configured to change the conveying direction of the conveyedmetal strip 2 during normal operation of thecontinuous plating facility 100. The roll for changing the conveying direction of themetal strip 2 is generally configured so that themetal strip 2 is wound thereon. For instance, in case of a roll for changing the conveying direction of themetal strip 2 by 90 degrees or more, it can be visually confirmed that the metal strip is wound around the roll. When themetal strip 2 is wound around the roll, generally, themetal strip 2 warps in the strip width direction (C-warp; crossbow). - Herein, the phrase “the
metal strip 2 is wound around theroll 14” means that the bend diameter of themetal strip 2 coincides with the diameter of theroll 14, i.e., themetal strip 2 is in surface contact with theroll 14. - Further, at least some of the plurality of
rolls 14 are fixed rolls whose rotational axes are fixed during normal operation of thecontinuous plating facility 100. - Next, with reference to
FIGS. 1 to 3 , thewarpage correction apparatus 1 used in thecontinuous plating facility 100 will be described. -
FIG. 2 is a schematic diagram of thewarpage correction apparatus 1 according to an embodiment.FIG. 3 is a diagram for describing warpage amount w of themetal strip 2, which shows a cross-section of themetal strip 2 taken along a plane perpendicular to the conveying direction at a position of thewiping nozzle 10.FIG. 2 is an enlarged partial view of thecontinuous plating facility 100 shown inFIG. 1 , but thefurnace 3 and thesnout 5 shown inFIG. 1 are not depicted inFIG. 2 for convenience of description. - As shown in
FIGS. 1 and 2 , thewarpage correction apparatus 1 according to an embodiment includes asink roll 20 disposed downstream of thebridle roll 16B, which is a fixed roll for changing the conveying direction of themetal strip 2, and inside thepot 6, and acorrection roll 18 disposed between thebridle roll 16B (fixed roll) and thesink roll 20. Thecorrection roll 18 is disposed above theplating bath 8. Thecorrection roll 18 may be disposed inside thesnout 5 as shown inFIG. 1 . - The
bridle roll 16B is the downstream one of the bridle rolls 16A, 16B disposed at the outlet portion 4 of thefurnace 3. - The
correction roll 18 is configured to be able to adjust the pressing amount d2 (seeFIG. 2 ) toward the metal strip 2 (or toward the pass line of the metal strip 2) by moving therotational axis 19 of thecorrection roll 18. As shown inFIGS. 1 and 2 , thecorrection roll 18 is disposed on the opposite side of themetal strip 2 from thebridle roll 16B (fixed roll) and thesink roll 20. - In
FIG. 2 , thecorrection roll 18 and themetal strip 2 when the pressing amount d2 is 0 are shown by the dotted line. At this time, themetal strip 2 is not pressed to thecorrection roll 18, and has a linear shape between thebridle roll 16B and thesink roll 20. - The
correction roll 18 has apparent diameter D2 corresponding to the pressing amount d2. The apparent diameter D2 of thecorrection roll 18 is a value defined as twice the reciprocal of the curvature of themetal strip 2 around a contact portion between themetal strip 2 and thecorrection roll 18. The apparent diameter D2 is affected by both geometrical conditions such as the correction roll, the fixed roll, the thickness and width of the metal strip, and mechanical properties such as Young's modulus, yield stress, and tension of themetal strip 2. By adjusting the pressing amount d2, the apparent diameter D2 can be adjusted from the actual diameter of the correction roll 18 (in a state where themetal strip 2 is wound around the roll 18) to infinity (in a state where the pressing amount d2 is zero). -
FIG. 8 is a diagram for describing an example of a method of calculating the apparent diameter D2. - For instance, as shown in
FIG. 8 , in a vertical plane including the extending direction of themetal strip 2, when x-axis and y-axis represent perpendicular directions, with respect to the bending shape of themetal strip 2 in this vertical plane, the apparent diameter D2 of thecorrection roll 18 creates an approximate curve of function y=f(x) before and after a contact point Pc (nearly point contact in a side view) between themetal strip 2 and the pressing roll. By second-order differentiating this approximate curve with respect to x in the vicinity of the contact portion between the strip and the roll, a curvature radius is obtained, and twice the curvature radius is defined as the apparent diameter D2. - The curve of the
metal strip 2 in the vertical plane can also be obtained based on continuous measurement on the height of the side surface of themetal strip 2 with respect to a certain horizontal line, or based on information processing of an image of the side surface of themetal strip 2. - However, in the actual operation of the
warpage correction apparatus 1, it is not necessary to measure the curvature radius since the apparent radius D2 in an appropriate range can be obtained by adjusting the pressing amount d2 of thecorrection roll 18. - In the
warpage correction apparatus 1 shown inFIGS. 1 and 2 , the ratio D3/D1 of the diameter D3 of the sink roll to the diameter D1 of thebridle roll 16B (fixed roll) is not less than 1.5. - Further, in the
warpage correction apparatus 1 shown inFIGS. 1 and 2 , the diameter D1 of thebridle roll 16B (fixed roll), the apparent diameter D2 of thecorrection roll 18, and the diameter D3 of thesink roll 20 satisfy D1<D2<D3. - In the
continuous plating facility 100 described above, at the exit sides of thebridle roll 16B (fixed roll), thecorrection roll 18, and thesink roll 20, the strip may warp in the strip width direction (warp such that the widthwise central portion of the strip protrudes in the strip thickness direction with respect to both widthwise edges, as shown inFIG. 3 , i.e., C-warp). - Herein, the warpage amount w (see
FIG. 3 ) of themetal strip 2 means a distance between both end points in the thickness direction of themetal strip 2 in the strip width direction. - The deformation direction of warpage in the strip width direction applied to the
metal strip 2 by each roll (direction in which the widthwise central portion of themetal strip 2 protrudes) is determined depending on a positional relationship between the roll and themetal strip 2. - For instance, as shown in
FIG. 3 , in thewarpage correction apparatus 1 shown inFIGS. 1 and 2 , when both surfaces of themetal strip 2 are referred to as afirst surface 2 a and asecond surface 2 b, warpage in the strip width direction applied to themetal strip 2 by thebridle roll 16B (fixed roll) and thesink roll 20 is warpage in which the central portion of themetal strip 2 protrudes toward thefirst surface 2 a (i.e., in a direction shown inFIG. 3 ) in the strip thickness direction, while warpage in the strip width direction applied to themetal strip 2 by thecorrection roll 18 is warpage in which the central portion of themetal strip 2 protrudes toward thesecond surface 2 b (i.e., opposite to the direction shown inFIG. 3 ). - If the
metal strip 2 has warpage in the strip width direction as described above at the position of the wipingnozzle 10 downstream of thesink roll 20, the distance between the wipingnozzle 10 and themetal strip 2 in the strip width direction is varied. As a result, the removal amount of the molten metal (plating solution) by the wipingnozzle 10 becomes non-uniform in the strip width direction depending on the distance between the wipingnozzle 10 and themetal strip 2. For instance, as the wipingnozzle 10 is distant from themetal strip 2, the removal amount of the molten metal (plating solution) by the wipingnozzle 10 decreases, so that the plating thickness increases. Conversely, as the wipingnozzle 10 is close to themetal strip 2, the removal amount of the molten metal (plating solution) by the wipingnozzle 10 increases, so that the plating thickness decreases. When the plating thickness is not uniform, the plating thickness increases for ensuring the plating at the thinnest portion, which leads to an increase in cost. Further, the plating thickness variation on themetal strip 2 may lead to uneven weldability (weld strength) at the time of welding the metal strip in a subsequent process, reducing the quality of a product of themetal strip 2. - In this regard, with the
warpage correction apparatus 1 according to the above embodiments, since the ratio D3/D1 of the diameter D3 of thesink roll 20 to the diameter D1 of thebridle roll 16B (fixed roll) is not less than 1.5, it is possible to effectively correct warpage in the strip width direction at the exit side of thesink roll 20, as described later with reference toFIGS. 4 to 7 . -
FIGS. 4 and 5 are each a graph showing an example of a relationship between the diameter D3 of thesink roll 20 and the warpage amount w of themetal strip 2 at the exit side of thesink roll 20 of thewarpage correction apparatus 1 according to an embodiment. The hatched area represents a range of the warpage amount w when the thickness t of themetal strip 2 is 3.2 mm or 2.3 mm respectively, the diameter D1 of thebridle roll 16B (fixed roll) is 800 mm, and the apparent diameter D2 (or pressing amount d2) of thecorrection roll 18 is changed between 800 mm and 2000 mm. In either figure, the line with the smaller warpage amount w is the case of D2=800 mm, and the line with the larger warpage amount w is the case of D2=2000 m. - As seen from the graphs of
FIGS. 4 and 5 , regardless of the thickness t, as the diameter D3 of the sink roll increases, the range of the warpage amount w that can be adjusted by the apparent diameter D2 (or pressing amount d2) of thecorrection roll 18 increases, and the warpage w can be easily adjusted to zero. -
FIGS. 6 and 7 are graphs showing an example of a relationship between the apparent diameter D2 of thecorrection roll 18 and the warpage amount w of themetal strip 2 at the exit side of thesink roll 20 of thewarpage correction apparatus 1 according to Example and Comparative Example, respectively.FIG. 6 is a graph when the diameter D1 of thebridle roll 16B (fixed roll) is 800 mm, the diameter D3 of thesink roll 20 is 2000 mm, D3/D1 is 2.5 in thewarpage correction apparatus 1 described above.FIG. 7 is a graph when D1 is 800 mm, D3 is 900 mm, D3/D1 is 1.1 in thewarpage correction apparatus 1 described above. In the graphs, “t” represents the thickness of themetal strip 2. - As can be seen from the graph of
FIG. 7 , in the warpage correction apparatus of D3/D1=1.1, when the thickness t is relatively thin, i.e., 1 to 2 mm, the warpage amount in the strip width direction at the exit side of thesink roll 20 can be reduced to about zero by adjusting the apparent diameter D2 of thecorrection roll 18 appropriately (i.e., by adjusting the pressing amount d2 of thecorrection roll 18 appropriately). However, when the thickness t is relatively thick, i.e., about 3 to 4 mm, the warpage amount in the strip width direction cannot be reduced to about zero even by adjusting the apparent diameter D2 of thecorrection roll 18. - In contrast, as can be seen from the graph of
FIG. 6 , in the warpage correction apparatus of D3/D1=2.5, by adjusting the apparent diameter D2 of thecorrection roll 18 appropriately (i.e., by adjusting the pressing amount d2 of thecorrection roll 18 appropriately), the warpage amount in the strip width direction at the exit side of thesink roll 20 can be reduced to about zero in a relatively wide strip thickness range of 1.2 mm≤t≤4.5 mm. - In other words, the greater the ratio D3/D1 of the diameter D3 of the
sink roll 20 to the diameter D1 of thebridle roll 16B (fixed roll), thethicker metal strip 2 can be corrected so that its warpage due to thesink roll 20 is reduced to zero by adjusting the apparent diameter D2 (or pressing amount d2) of thecorrection roll 18. - On the basis of these findings, the
warpage correction apparatus 1 according to the above-described embodiments is set so that the ratio D3/D1 of the diameter D3 of thesink roll 20 to the diameter D1 of thebridle roll 16B (fixed roll) is not less than 1.5. Thus, by adjusting the apparent diameter D2 (or pressing amount d2) of thecorrection roll 18 appropriately, even when the thickness t of themetal strip 2 is relatively thick, it is possible to effectively reduce the warpage amount w of themetal strip 2 in the strip width direction at the outlet of thepot 6, and it is possible to correct warpage of themetal strip 2. - Accordingly, it is easy to uniformize the amount of the molten metal adhering to the surface of the
metal strip 2, for example, by the wipingnozzle 10 disposed downstream of thepot 6 with respect to the conveying direction of the metal strip. - Further, in the
warpage correction apparatus 1, when the diameter D1 of thebridle roll 16B (fixed roll), the apparent diameter D2 of thecorrection roll 18, and the diameter D2 of thesink roll 20 satisfy D1<D2<D3, the plastic deformation amount provided to themetal strip 2 by each of thebridle roll 16B (fixed roll), thecorrection roll 18, and thesink roll 20 is the greatest in thesink roll 20, followed by thecorrection roll 18 and thebridle roll 16B (fixed roll). Accordingly, warpage of themetal strip 2 at the exit side of thesink roll 20 can be effectively corrected in an adjustment range of plastic deformation by thecorrection roll 18. - In some embodiments, the
warpage correction apparatus 1 may further include a controller (not shown) configured to adjust the pressing amount d2 of thecorrection roll 18 toward themetal strip 2 based on a measurement result of the warpage amount by thewarpage measuring device 12. - For instance, the controller may be configured to adjust the pressing amount d2 of the
correction roll 18 toward themetal strip 2 so that the warpage amount w approximates zero by feedback control based on the warpage amount w at the exit side of thesink roll 20 measured by thewarpage measuring device 12. - In a case where the
warpage measuring device 12 includes a plurality of position sensors arranged along the strip width direction of themetal strip 2 and each configured to measure a distance from themetal strip 2 as described above, the controller may be configured to calculate the warpage amount w of themetal strip 2 at the exit side of thesink roll 20 based on detection results of the position sensors, and adjust the pressing amount d2 of thecorrection roll 18 toward themetal strip 2 based on the warpage amount w thus calculated. - Hereinafter, the outline of the
warpage correction apparatus 1 and thecontinuous plating facility 100 according to some embodiments will be described. - (1) A warpage correction apparatus according to at least one embodiment of the present invention is a warpage correction apparatus for a metal strip to be used in a continuous plating facility for the metal strip comprising: a sink roll disposed downstream of a fixed roll with respect to a conveying direction of the metal strip and inside a molten metal pot for plating, the fixed roll being configured to change the conveying direction of the metal strip; and a correction roll disposed between the fixed roll and the sink roll and configured to correct warpage of the metal strip, wherein a ratio D3/D1 of a diameter D3 of the sink roll to a diameter D1 of the fixed roll is not less than 1.5.
- When the fixed roll, the correction roll, and the sink roll deform the metal plate in this order, the metal strip may warp in the strip width direction (hereinafter, referred to as “C-warp” or simply “warpage”) at the exit side of each roll. According to the findings of the present inventors, as the ratio D3/D1 of the diameter D3 of the sink roll to the diameter D1 of the fixed roll increases, it is possible to expand the adjustable range of warpage amount in the strip width direction at the exit side of the sink roll by adjusting the apparent diameter D2 of the correction roll, and it is possible to bring the warpage amount of a thicker metal strip close to zero.
- In this regard, with the above configuration (1), since D3/D1 is not less than 1.5, by adjusting the apparent diameter D2 of the correction roll appropriately, even when the strip is relatively thick, it is possible to effectively reduce warpage of the metal strip in the strip width direction at the outlet of the molten metal pot, and it is possible to correct warpage of the metal strip.
- Accordingly, it is easy to uniformize the amount of the molten metal adhering to the surface of the metal strip, for example, by a gas wiping downstream of the molten metal pot with respect to the conveying direction of the metal strip.
- If the correction roll for correcting warpage at the outlet of the molten metal pot is disposed inside the molten metal pot on the downstream side of the sink roll unlike the above (1), the bearing of the correction roll requires a large clearance to prevent biting of foreign matter. In this case, backlash is likely to occur due to the clearance of the bearing, so that it is difficult to accurately correct warpage of the metal strip.
- In this regard, with the above configuration (1), since the correction roll is disposed between the fixed roll and the sink roll (i.e., upstream of the sink roll with respect to the conveying direction of the metal strip), it is unnecessary to dispose the correction roll inside the molten metal pot. Accordingly, a bearing with little backlash can be adopted, and the warpage amount of the metal strip can be accurately adjusted. Further, since the correction roll in the molten metal pot can be eliminated, a sink roll having a larger diameter can be adopted without increasing the size of the existing molten metal pot which assumes that the correction roll is disposed inside the pot.
- The “fixed roll” in the above (1) may be a roll that mainly causes warpage of the metal strip at the exit side of the sink roll. More specifically, the “fixed roll” in the above (1) may be the
bridle roll 16B of thewarpage correction apparatus 1 or may be anotherroll 14 fixed in thefurnace 3. Moreover, the “fixed roll” in the above (1) may be one disposed on the most downstream side of the fixed rolls for changing the conveying direction of the metal strip. - (2) In some embodiments, in the above configuration (1), the correction roll is capable of adjusting a pressing amount of the correction roll toward the metal strip.
- With the above configuration (2), by adjusting the pressing amount of the correction roll toward the metal strip (i.e., by adjusting the apparent diameter D2 of the correction roll), the plastic deformation amount of the metal strip by the correction roll can be changed. Accordingly, by adjusting the pressing amount appropriately, it is possible to effectively correct warpage of the metal strip in the strip width direction at the outlet of the molten metal pot.
- (3) In some embodiments, in the above configuration (1) or (2), D1<D2<D3 is satisfied, where D2 is an apparent diameter of the correction roll corresponding to a pressing amount of the correction roll toward the metal strip.
- With the above configuration (3), the plastic deformation amount provided to the metal strip by each of the fixed roll, the correction roll, and the sink roll is the greatest in the sink roll, followed by the correction roll and the fixed roll. Accordingly, warpage of the metal strip at the outlet of the molten metal pot can be effectively corrected in an adjustment range of plastic deformation by the correction roll.
- (4) In some embodiments, in any one of the above configurations (1) to (3), the diameter D3 of the sink roll is not less than 1200 mm.
- Alternatively, in some embodiments, in any one of the above configurations (1) to (3), the diameter D3 of the sink roll is not less than 1300 mm.
- Generally, the diameter of the sink roll disposed inside the molten metal pot is at most about 1000 mm. When a sink roll of larger diameter is adopted, a related facility (e.g., molten metal pot for accommodating the sink roll) other than the sink roll needs to be enlarged, so that the installation cost is increased.
- With the above configuration (4), since the sink roll having a larger diameter than usual, namely 1200 mm, or 1300 mm or more, is adopted regardless of the above circumstances, D3/D1 is easily set to not less than 1.5 when a fixed roll of typical size is used. Thus, by adjusting the apparent diameter D2 of the correction roll appropriately, even when the strip is relatively thick, it is possible to effectively reduce warpage of the metal strip in the strip width direction at the outlet of the molten metal pot.
- (5) In some embodiments, in any one of the above configurations (1) to (4), the fixed roll is disposed inside a furnace for heat treatment of the metal strip.
- With the above configuration (5), when the fixed roll is disposed inside the furnace (e.g., annealing furnace) for heat treatment of the metal strip, as described in the above (1), by adjusting the apparent diameter D2 of the correction roll appropriately, even when the strip is relatively thick, it is possible to effectively reduce warpage of the metal strip in the strip width direction at the outlet of the molten metal pot.
- (6) In some embodiments, in the above configuration (5), the fixed roll is disposed at an outlet portion of the furnace.
- The heating furnace for the metal strip may contain a plurality of rolls for conveying the metal strip with change of direction as appropriate. The roll disposed at the outlet portion of the furnace is the most downstream one of the plurality of rolls. The most downstream roll tends to be a primary cause of warpage in the strip width direction at the entry side of the correction roll.
- In this regard, with the above configuration (6), it is possible to more effectively correct warpage in the strip width direction primarily caused by the fixed roll disposed at the outlet portion of the furnace by means of the correction roll and the sink roll.
- (7) In some embodiments, in any one of the above configurations (1) to (6), the fixed roll is a bridle roll for adjusting a tension applied to the metal strip.
- The bridle roll is generally disposed at the outlet portion of the furnace and thus tends to be a primary cause of warpage in the strip width direction at the entry side of the correction roll.
- With the above configuration (7), it is possible to more effectively correct warpage in the strip width direction primarily caused by the bridle roll by means of the correction roll and the sink roll.
- (8) In some embodiments, in any one of the above configurations (1) to (7), the correction roll is disposed inside a snout disposed between the molten metal pot and an outlet portion of a furnace for heat treatment of the metal strip.
- (9) In some embodiments, in any one of the above configurations (1) to (8), the warpage correction apparatus further comprises: a warpage measuring device disposed downstream of the sink roll with respect to the conveying direction; and a controller configured to adjust a pressing amount of the correction roll toward the metal strip based on a measurement result of the warpage measuring device.
- With the above configuration (9), since the apparent diameter D2 of the correction roll is adjusted by controlling the pressing amount of the correction roll toward the metal strip by means of the controller based on a measurement result of the warpage measuring device, it is possible to effectively correct warpage of the metal strip in the strip width direction by adjusting the apparent diameter D2 of the correction roll appropriately.
- (10) A continuous plating facility for metal strip according to at least one embodiment of the present invention comprises the warpage correction apparatus described in any one of the above (1) to (9).
- With the above configuration (10), since D3/D1 is not less than 1.5, by adjusting the apparent diameter D2 of the correction roll appropriately, even when the strip is relatively thick, it is possible to effectively reduce warpage of the metal strip in the strip width direction at the outlet of the molten metal pot, and it is possible to correct warpage of the metal strip. Accordingly, it is easy to uniformize the amount of the molten metal adhering to the surface of the metal strip, for example, by a gas wiping downstream of the molten metal pot with respect to the conveying direction of the metal strip.
- Embodiments of the present invention were described in detail above, but the present invention is not limited thereto, and various amendments and modifications may be implemented.
- Further, in the present specification, an expression of relative or absolute arrangement such as “in a direction”, “along a direction”, “parallel”, “orthogonal”, “centered”, “concentric” and “coaxial” shall not be construed as indicating only the arrangement in a strict literal sense, but also includes a state where the arrangement is relatively displaced by a tolerance, or by an angle or a distance whereby it is possible to achieve the same function.
- For instance, an expression of an equal state such as “same” “equal” and “uniform” shall not be construed as indicating only the state in which the feature is strictly equal, but also includes a state in which there is a tolerance or a difference that can still achieve the same function.
- Further, for instance, an expression of a shape such as a rectangular shape or a cylindrical shape shall not be construed as only the geometrically strict shape, but also includes a shape with unevenness or chamfered corners within the range in which the same effect can be achieved.
- On the other hand, an expression such as “comprise”, “include”, “have” are not intended to be exclusive of other components.
-
- 1 Warpage correction apparatus
- 2 Metal strip
- 2 a First surface
- 2 b Second surface
- 3 Furnace
- 4 Outlet portion
- 5 Snout
- 6 Pot (Molten metal pot)
- 8 Plating bath
- 10 Wiping nozzle
- 12 Warpage measuring device
- 14 Roll
- 16A Bridle roll
- 16B Bridle roll
- 17 virtual roll
- 18 Correction roll
- 19 Rotational axis
- 20 Sink roll
- 100 Continuous plating facility
- d2 Pressing amount
- w Warpage amount
Claims (10)
1. A warpage correction apparatus for a metal strip to be used in a continuous plating facility for the metal strip, the warpage correction apparatus comprising:
a sink roll disposed downstream of a fixed roll with respect to a conveying direction of the metal strip and inside a molten metal pot for plating, the fixed roll being configured to change the conveying direction of the metal strip; and
a correction roll disposed between the fixed roll and the sink roll and configured to correct warpage of the metal strip,
wherein a ratio D3/D1 of a diameter D3 of the sink roll to a diameter D1 of the fixed roll is not less than 1.5.
2. The warpage correction apparatus according to claim 1 ,
wherein the correction roll is capable of adjusting a pressing amount of the correction roll toward the metal strip.
3. The warpage correction apparatus according to claim 1 ,
wherein D1<D2<D3 is satisfied, where D2 is an apparent diameter of the correction roll corresponding to a pressing amount of the correction roll toward the metal strip.
4. The warpage correction apparatus according to claim 1 ,
wherein the diameter D3 of the sink roll is not less than 1200 mm.
5. The warpage correction apparatus according to claim 1 ,
wherein the fixed roll is disposed inside a furnace for heat treatment of the metal strip.
6. The warpage correction apparatus according to claim 5 ,
wherein the fixed roll is disposed at an outlet portion of the furnace.
7. The warpage correction apparatus according to claim 1 ,
wherein the fixed roll is a bridle roll for adjusting a tension applied to the metal strip.
8. The warpage correction apparatus according to claim 1 ,
wherein the correction roll is disposed inside a snout disposed between the molten metal pot and an outlet portion of a furnace for heat treatment of the metal strip.
9. The warpage correction apparatus according to claim 1 , further comprising:
a warpage measuring device disposed downstream of the sink roll with respect to the conveying direction; and
a controller configured to adjust a pressing amount of the correction roll toward the metal strip based on a measurement result of the warpage measuring device.
10. A continuous plating facility for a metal strip, comprising:
the warpage correction apparatus according to claim 1 .
Applications Claiming Priority (1)
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PCT/JP2017/043023 WO2019106785A1 (en) | 2017-11-30 | 2017-11-30 | Plate warp correction device for metal plates, and continuous plating processing equipment for metal plates |
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US20200261957A1 true US20200261957A1 (en) | 2020-08-20 |
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ID=63354744
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US16/757,598 Abandoned US20200261957A1 (en) | 2017-11-30 | 2017-11-30 | Warpage correction apparatus for metal strip and continuous plating facility for metal strip |
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US (1) | US20200261957A1 (en) |
EP (1) | EP3686311B1 (en) |
JP (1) | JP6381858B1 (en) |
CN (1) | CN111295461A (en) |
WO (1) | WO2019106785A1 (en) |
Cited By (1)
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US20220298616A1 (en) * | 2019-08-30 | 2022-09-22 | Micromaterials Llc | Apparatus and methods for depositing molten metal onto a foil substrate |
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IT202000016012A1 (en) * | 2020-07-02 | 2022-01-02 | Danieli Off Mecc | EQUIPMENT FOR CORRECTING THE FLATNESS OF A METALLIC STRIP AND RELATED CORRECTION METHOD |
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JPS5511171A (en) * | 1978-07-10 | 1980-01-25 | Sumitomo Metal Ind Ltd | Fused zinc one side plating apparatus of steel belt |
JPS5554359U (en) * | 1978-10-04 | 1980-04-12 | ||
JPH0254746A (en) | 1988-08-18 | 1990-02-23 | Kawasaki Steel Corp | Method for preventing of warpage in band-like material in the cross direction |
KR0174815B1 (en) * | 1989-09-18 | 1999-02-18 | 미다 가쓰시게 | Leveling device and leveling method |
JPH03166354A (en) | 1989-11-24 | 1991-07-18 | Kawasaki Steel Corp | Continuous hot tipping apparatus for steel strip |
JP3111857B2 (en) * | 1995-07-06 | 2000-11-27 | 日本鋼管株式会社 | Shape control method for hot-dip coated steel sheet |
JP2005097748A (en) * | 2001-03-15 | 2005-04-14 | Jfe Steel Kk | Method and device of producing hot-dip plated metal strip |
JP2004107681A (en) * | 2002-09-13 | 2004-04-08 | Jfe Steel Kk | Method and apparatus for producing hot dip plated metallic strip |
JP4912699B2 (en) * | 2006-03-07 | 2012-04-11 | 新日本製鐵株式会社 | Hot dipping equipment |
KR101559159B1 (en) * | 2012-02-13 | 2015-10-08 | 스틸플랜테크가부시키가이샤 | Roller leveler and method for correcting sheet material |
-
2017
- 2017-11-30 EP EP17933221.8A patent/EP3686311B1/en active Active
- 2017-11-30 CN CN201780096430.XA patent/CN111295461A/en active Pending
- 2017-11-30 US US16/757,598 patent/US20200261957A1/en not_active Abandoned
- 2017-11-30 JP JP2018513689A patent/JP6381858B1/en not_active Expired - Fee Related
- 2017-11-30 WO PCT/JP2017/043023 patent/WO2019106785A1/en unknown
Cited By (4)
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US20220298616A1 (en) * | 2019-08-30 | 2022-09-22 | Micromaterials Llc | Apparatus and methods for depositing molten metal onto a foil substrate |
US20220298617A1 (en) * | 2019-08-30 | 2022-09-22 | Micromaterials Llc | Apparatus and methods for depositing molten metal onto a foil substrate |
US11597989B2 (en) * | 2019-08-30 | 2023-03-07 | Applied Materials, Inc. | Apparatus and methods for depositing molten metal onto a foil substrate |
US11597988B2 (en) * | 2019-08-30 | 2023-03-07 | Applied Materials, Inc. | Apparatus and methods for depositing molten metal onto a foil substrate |
Also Published As
Publication number | Publication date |
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WO2019106785A1 (en) | 2019-06-06 |
CN111295461A (en) | 2020-06-16 |
EP3686311B1 (en) | 2021-06-23 |
EP3686311A4 (en) | 2020-07-29 |
EP3686311A1 (en) | 2020-07-29 |
JP6381858B1 (en) | 2018-08-29 |
JPWO2019106785A1 (en) | 2019-12-12 |
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