WO2009017209A1 - Equipement de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide et procédé de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide - Google Patents

Equipement de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide et procédé de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide Download PDF

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Publication number
WO2009017209A1
WO2009017209A1 PCT/JP2008/063807 JP2008063807W WO2009017209A1 WO 2009017209 A1 WO2009017209 A1 WO 2009017209A1 JP 2008063807 W JP2008063807 W JP 2008063807W WO 2009017209 A1 WO2009017209 A1 WO 2009017209A1
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WO
WIPO (PCT)
Prior art keywords
steel strip
molten metal
roll
plated steel
squeeze roll
Prior art date
Application number
PCT/JP2008/063807
Other languages
English (en)
Japanese (ja)
Inventor
Gentaro Takeda
Hiroyuki Fukuda
Hideyuki Takahashi
Original Assignee
Jfe Steel Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2007197681A external-priority patent/JP5194612B2/ja
Priority claimed from JP2007197682A external-priority patent/JP5194613B2/ja
Application filed by Jfe Steel Corporation filed Critical Jfe Steel Corporation
Publication of WO2009017209A1 publication Critical patent/WO2009017209A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material
    • C23C2/20—Strips; Plates

Definitions

  • the present invention relates to a manufacturing apparatus for a molten metal-plated steel strip that can reduce the scattering of the molten metal in a molten metal plating process, and a method for manufacturing a molten metal-plated steel strip using the apparatus.
  • a typical continuous melting apparatus and process will be described with reference to FIG.
  • the steel strip 3 is immersed in a molten metal plating bath 8 filled in the plating tank 9 and the direction is changed by the sink roll 7, and then the steel strip 3 is pulled up vertically.
  • the steel strip coming out of the plating bath has molten metal attached to the surface.
  • the steel strip 3 to which the molten metal adheres is squeezed of excess molten metal by the pressurized gas ejected from the gas wiping nozzle 4 provided so as to be sandwiched in a non-contact manner.
  • the adhesion amount (plating adhesion amount) is controlled to be a predetermined plating thickness uniformly in the plate width direction and the plate longitudinal direction.
  • a support roll 6 in the bath is usually placed under the bath surface above the synchro 7 and gas is used as needed when alloying is performed.
  • a bath support roll 5 is installed above the wiping nozzle 4.
  • the nozzle is longer than the width of the steel strip, that is, extends beyond the width end of the steel strip 3 in order to cope with various widths of the steel strip and to cope with the deviation in the width direction when the steel strip is pulled up.
  • a so-called splash occurs in which molten metal falling below the steel strip is scattered by the disturbance of the jet that collides with the steel strip 3, and the surface quality of the steel strip is degraded.
  • it is only necessary to increase the steel strip threading speed.
  • the viscosity of the molten metal As the line speed increases, the initial amount of adhesion immediately after passing through the steel sheet bath increases. For this reason, in order to control the amount of plating deposition within a certain range, the wiping gas pressure must be set to a higher pressure, which greatly increases the splash and makes it impossible to maintain good surface quality. In order to solve the above problem, the amount of excess molten metal that accompanies the steel strip is reduced to some extent from the molten metal plating tank to the gas wiping nozzle, and the initial adhesion amount immediately after passing through the plating bath is reduced. A method of reducing is disclosed.
  • the shape of the molten metal squeezing member is preferably a rectangular shape or a cylindrical body having an introduction portion whose distance from the front and back surfaces of the steel strip becomes wider at the lower end, and the installation position of the molten metal squeezing member is It is described that the position over the upper and lower surfaces of the plating solution is most desirable.
  • An object of the present invention is to provide a facility for manufacturing a molten metal-plated steel strip.
  • the present invention provides a method for producing a steel strip that can stably produce a molten metal-plated steel strip that reduces the occurrence of splash and is excellent in surface appearance at both normal plate feeding speed and high-speed plate feeding. It is an issue to provide. Disclosure of the invention
  • the present invention is directed to a steel strip that is continuously pulled up from a molten metal plating tank, by blowing gas from a gas wiping nozzle that is disposed opposite to both sides of the steel strip above the molten metal plating tank.
  • a molten metal squeezing roll disposed below the plating bath surface and above the support roll in the bath, on both sides of the steel strip, in non-contact with the steel strip. The molten metal squeezing port is driven so that the direction of rotation at the closest position to the steel strip is opposite to the direction of travel of the steel strip.
  • the molten metal squeeze roll is directly connected to the strip feed speed V p [m / sec] and the rotational speed V r [rad / sec] of the molten metal squeeze roll. It is preferable that the diameter D [m] and the closest distance S [mm] between the steel strip and the molten metal squeeze roll are set so as to satisfy the following formula (1).
  • the molten metal squeezing roll has a width direction of the steel strip that is greater than a roll diameter facing a central portion in the width direction of the steel strip. It is more preferable that the diameter of the roll facing both end portions is larger.
  • a rectifying plate that covers 1Z2 or more of the 1Z4 surface corresponding to the bath surface side and the steel strip side of the molten metal squeeze roll is further installed.
  • the ones made are preferred.
  • the diameter D [m] of the molten metal squeeze roll is determined with respect to the sheet feeding speed Vp [m / sec] of the steel strip and the rotational speed Vr [rad / sec] of the molten metal squeeze roll.
  • FIG. 1 is a cross-sectional view showing an embodiment of the apparatus for producing a molten metal plated steel strip according to the present invention.
  • FIG. 2 is a diagram showing the flow of molten metal in the vicinity of the steel strip passing through the molten metal squeeze roll j side and the molten metal squeeze roll part of the apparatus for producing a molten metal plated steel strip according to the present invention.
  • FIG. 3 is a diagram used for explaining the method for controlling the molten metal squeeze tool of the apparatus for producing a molten metal plated steel strip according to the present invention.
  • FIG. 4 (a) to FIG. 4 (c) are plan views for explaining the roll shape of the molten metal squeezing roll in the apparatus for producing a molten metal-plated steel strip according to the present invention.
  • FIG. 5 is a cross-sectional view showing a general apparatus for producing a molten metal-plated steel strip.
  • FIG. 6 is a view of a molten metal squeezing member described in Japanese Patent Application Laid-Open No. 2004-760602.
  • FIG. 7 is a cross-sectional view showing an embodiment in which a rectifying plate is attached to the apparatus for producing a molten metal plated steel strip of the present invention.
  • FIG. 8 is a diagram showing the flow of molten metal in the vicinity of the molten metal squeeze tool and the rectifying plate and in the vicinity of the steel strip passing through the molten metal squeezing roll part of the manufacturing apparatus for the molten metal plated steel strip of the present invention. is there.
  • FIG. 9 is a diagram used for explaining the control method of the molten metal squeeze roll and the rectifying plate in the apparatus for producing a molten metal plated steel strip of the present invention.
  • FIG. 10 (a) to FIG. 10 (b) are cross-sectional views showing another embodiment of the rectifying plate of the apparatus for producing a molten metal plated steel strip according to the present invention.
  • FIG. 1 is a cross-sectional view showing an embodiment of the apparatus for producing a molten metal plated steel strip according to the present invention.
  • 1 is a molten metal squeezing roll for removing excess molten metal accompanying the steel strip.
  • the molten metal squeezing roll 1 is disposed on both sides of the steel strip 3 below the bath surface and above the in-bath support roll 6, and is placed at a predetermined distance from the steel strip surface.
  • FIG. 2 is a view for explaining the flow of molten metal in the vicinity of the molten metal squeeze roll in FIG. 1 and in the vicinity of the steel strip passing through the molten metal squeeze roll.
  • the rotation direction of the molten metal squeeze roll 1 is controlled as described above, even if an accompanying flow 1 1 is generated as the steel strip 3 travels, a forced flow 1 2 in the opposite direction is generated.
  • the accompanying flow 11 of the steel strip 3 passing between the pair of molten metal squeezed rolls 1 can be greatly suppressed, and the amount of excess molten metal accompanying the steel strip pulled up from the plating bath can be reduced.
  • the axis of the molten metal squeeze roll 1 (or the rotation axis or the center axis) is parallel to the axis of the support roll 6 in the bath (or the rotation axis or the center axis).
  • a more effective control method for the molten metal squeeze roll 1 was studied. As shown in Fig.
  • the feeding speed of steel strip 3 is V p [m / sec]
  • the diameter of molten metal squeeze roll 1 is D [m]
  • the rotational speed is V r [rad / sec]
  • steel strip 3
  • the effective influence range of the flow generated by the rotation of the molten metal squeeze roll 1 is estimated to be approximately 10 mm from the outer surface of the roll by a water model experiment. Therefore, we found that the following equation (1) should be satisfied in order to reduce the excess molten metal accompanying the steel strip pulled up on the bath.
  • the molten metal squeeze roll 1 may be brought close to the steel strip 3 to such an extent that it does not generate rubbing (usually about 3 mm).
  • the shape of the molten metal squeezing roll 1 is not particularly limited as long as the effect of suppressing the accompanying flow 11 is not impaired.
  • 4 (a) to 4 (c) are schematic views overlooking the shape of the molten metal squeeze roll 1 in the width direction of the steel strip.
  • Figure 4 (a) shows the same diameter in the entire length of the steel strip. Splash that becomes a problem when performing gas wiping is usually generated at the edge of the steel strip. Therefore, if the amount of excess molten metal at the edge of the steel strip can be reduced more, the splash reduction effect will be higher. From Equation (1), the right side of Equation (1) increases as the distance S between the steel strip and the end of the steel strip on the roll side decreases, so the molten metal squeeze roll as shown in Fig. 4 (a) is Even if it is not possible to approach the steel strip over the entire length in the direction, it is possible to make the distance between the roll and the steel strip closer by increasing the roll diameter only at the edge in the width direction of the steel strip.
  • a certain range in the center of the roll is a constant diameter, and the outside is a tapered crown roll in which the roll diameter is increased in a tapered shape. May be.
  • a radial crown roll having a large roll diameter with a certain curvature from the center of the roll may be used. Further, a combination of these may be used.
  • diameter D of molten metal squeeze roll 1, edge of steel strip 3 and molten metal squeeze roll 1 Eq. (1) should be applied, where S is the closest distance to.
  • the in-bath support roll 6 is disposed on both sides of the steel strip 3, but the in-bath support roll 6 may be disposed on one side of the steel strip 3.
  • the position of the molten metal squeeze tool 1 disposed on the side where the support roll 6 in the bath is not disposed is the support in the bath whose vertical position is disposed on one side of the steel strip 3. It should be above the roll 6.
  • baffle plate is further installed so as to cover the molten metal squeezing roll 1, and have also completed the invention having the following characteristics.
  • FIG. 7 is a view showing an embodiment of the apparatus for producing a molten metal-plated steel strip according to the present invention.
  • 1 is a molten metal comparison roll
  • 2 is a current plate. The action of removing excess molten metal accompanying the steel strip is achieved by the molten metal squeezing roll 1 and the current plate 2.
  • the molten metal squeezing roll 1 is disposed across the steel strip and is installed at a predetermined distance from the surface of the steel strip.
  • the rectifying plate 2 is installed under the bath surface above the molten metal squeeze roll 1 so as to cover the roll with a gap from the molten metal squeeze roll 1.
  • the molten metal squeezing roll 1 is driven so as to rotate in the direction opposite to the traveling direction of the steel strip at the closest position to the steel strip.
  • FIG. 8 is a diagram for explaining the flow of the molten metal in the vicinity of the molten metal squeeze hole and the vicinity of the molten metal squeeze part in FIG.
  • the molten metal squeeze roll 1 When the rotational direction of the molten metal squeeze roll 1 is controlled as described above, the molten metal squeeze roll 1 is forced in the opposite direction even if an accompanying flow 1 1 is generated as the copper band advances. Since the general flow 1 2 is generated, the accompanying flow 1 1 can be suppressed.
  • the rectifying plate 2 can be developed by restricting the accompanying flow 1 2 generated by the rotational drive of the molten metal throttle 1 to the region between the molten metal throttle 1 and the rectifying plate 2. it can.
  • the accompanying flow 1 1 The flow to be generated for suppression is the flow in the opposite direction to the accompanying flow 1 1 as shown in Fig. 8. The effect will be greater by installing it side by side.
  • the rectifying plate 2 is a quarter of the outer peripheral surface of the molten metal squeeze roll 1, corresponding to the bath surface side and the steel strip side (in the arc AB in FIG. 9). It is effective to cover 1 Z 2 or more of the corresponding outer peripheral surface.
  • line AO is perpendicular to the steel strip surface
  • line BO is parallel to the steel strip surface
  • arc AB corresponds to the arc of quadrant OAB.
  • the 1/4 of the outer peripheral surface of the molten metal squeeze roll 1 corresponding to the anti-bath surface and the steel strip side (the outer peripheral surface corresponding to the arc AC in Fig. 9) is not covered with the rectifying plate 2.
  • the line segment CO is parallel to the steel strip surface, and the arc AC corresponds to the arc of the quadrant OAC.
  • the shape of the rectifying plate 2 is an arc with the same center as the molten metal squeeze roll 1, as shown in Fig. 9, and the plate passing speed of the steel strip is V p Cm / sec], the diameter of the molten metal squeeze roll 1 is D [m], the rotation speed is V r [rad / sec], the closest distance between the steel strip 3 and the molten metal squeeze roll 1 is S [mm], the molten metal squeeze If the distance between roll 1 and rectifying plate 2 is S r [mm], and the melt covered by rectifying plate 2 is L.
  • the circumference of molten metal squeeze roll 1 is L [mm].
  • the rectifying plate 2 Under the condition that the rectifying plate 2 is installed so as to cover 1/2 or more of the 1/4 surface corresponding to the bath surface side and the steel strip 3 side of the surface, it is lifted onto the bath along with the steel strip 3 In order to reduce excess molten metal, it is preferable to satisfy the following formulas (2) and (3).
  • the circumferential length L of the molten metal squeezing roll 1 covered by the rectifying plate 2 is projected toward the center of the molten metal squeezing roll 1 in a cross section perpendicular to the molten metal squeezing roll center line.
  • the molten metal squeezing roll 1 is the projected arc length of the rectifying plate on the outer peripheral surface, and the rectifying plate 2 covers the arc AB part of the quadrant OAB in FIG.
  • AC is not covered means that when the current plate 2 is projected toward the center of the molten metal squeeze roll 1, the current plate 2 is not projected onto the outer peripheral surface of the molten metal squeeze roll 1.
  • Equation (3) means that the distance S r between the molten metal squeeze roll 1 and the rectifying plate 2 is 5 times or less the closest distance S between the steel strip 3 and the molten metal squeeze roll. The larger the right side of Equation (2), the better the effect of reducing the amount of excess molten metal associated with the steel strip.
  • the molten metal squeezing roll 1 and the current plate 2 may be brought close to the steel strip 3 to the extent that no scuffing occurs. This distance is usually about 3 mm.
  • the rectifying plate 2 does not need to keep the distance from the molten metal squeezing roll 1 constant. Therefore, the shape of the current plate 2 is not limited to the arc shape. If the distance between the rectifying plate 2 and the molten metal squeezing roll 1 is not constant, the flow rate of the molten metal flowing between the rectifying plate 2 and the molten metal squeezing roll 1 is limited by the portion where the distance is the narrowest. 2 and the closest distance Sr between the molten metal squeezing rolls 1 as a representative value, the effect of reducing the amount of excess molten metal can be evaluated.
  • the shape of the rectifying plate 2 is not an arc as shown in Fig. 9, but for example, an inverted L shape with a horizontal portion and a vertical portion connected as shown in Fig. 10 (a), or a horizontal shape as shown in Fig. 10 (b) If the shape is such that the straight part and lead part are connected to each other, pressure loss will occur and the effect will be reduced, but the closest distance S r between the molten metal squeeze roll 1 and the current plate 2 will be By approximating the projected arc length L of the rectifying plate 1 on the outer peripheral surface of the molten metal squeeze roll 1 to the center of the molten metal squeeze roll 1 to the above formulas (2) and (3), the approximate effect Can be calculated.
  • the molten metal plating steel strip production equipment shown in Fig. 1 was installed in the continuous molten zinc plating line, and experiments were conducted on the molten zinc plating steel strip.
  • the molten metal squeezing rolls are opposed to both sides of the steel strip, and a servo motor that rotates each roll is installed at the end of the frame extended from the servo motor position control device provided on the machine side, and directly connected to this servo motor. .
  • the distance to the steel strip can be easily controlled, and the rotational speed of the molten metal squeeze roll can be set arbitrarily.
  • the distance between the bath surface and the upper end of the support roll in the bath on the side close to the bath surface was 80 mm.
  • the diameter of the center in the width direction is 50 mm, and the bath surface and roll center The distance was fixed at 35mm.
  • the length of the molten metal squeeze roll in the width direction of the steel strip was set to 2000 mm, equivalent to a gas wiping nozzle.
  • the production conditions for the hot-dip galvanized steel strip are as follows: the slit gap of the gas wiping nozzle is 0, 8 mm, the distance between the gas wiping nozzle and the steel strip is 7 mm, the nozzle height from the molten zinc bath is 400 mm, and the molten zinc bath temperature is 460 °.
  • the size of the steel strip to be produced was 0.8 mm thick X I. 2 m wide, and the coating weight was 45 g Zm 2 on one side.
  • Table 1 shows the other manufacturing conditions, molten metal squeeze roll conditions, and the results of a survey of the amount of splash that is the product quality index.
  • Splash occurrence rate is the ratio of the length of steel strip that was determined to have splash defects in the inspection process to the length of steel strip that passed under each manufacturing condition, and includes mild splash defects that do not cause any practical problems. .
  • Tapered crown roll is the distance from the steel strip in the flat part.
  • Examples 1 to 4 are in the direction of the roll width as illustrated in Fig. 4 (a), in the case of a flat molten metal squeeze roll that does not change its diameter. r is changed.
  • the splash occurrence rate is reduced, and the effect is more remarkable as the right side of Equation (1) is larger. It was hot.
  • Example 5 is a case of a tapered crown roll in which the center of the roll is flat and the diameter of the roll increases toward both ends, as shown in FIG. 4 (b).
  • the steel strip end can be as close as 6 mm, and the formula (1 ) The right side is between Example 3 and 4. Splash incidence was also a result.
  • Examples 6 and 7 and Comparative Example 2 were performed under the condition where the sheet passing speed was increased to 4. OmZ s. In Comparative Example 2, the splash was frequent and the operation was impossible. In Examples 6 and 7, the quality level was better than that of the current plate speed of 2.5 mZ s (Comparative Example 1). The operation became possible.
  • the plating thickness can be adjusted by gas wiping. Can be greatly reduced.
  • the amount of splash generated significantly increased when the plate passing speed was increased.
  • the plate passing speed is increased significantly, the occurrence of splash can be suppressed and plating without surface defects can be achieved. It becomes possible to manufacture a steel strip while maintaining high productivity. Examples 8 to 1 1
  • the manufacturing equipment for the molten metal plating steel strip shown in Fig. 7 was installed in the continuous molten zinc plating line, and an experiment for manufacturing the molten zinc plating steel strip was conducted.
  • the molten metal squeezing roll 1 was placed directly opposite to both sides of the steel strip, and a servo motor that rotates each roll was installed at the end of the frame extended from the position control device by the servo motor provided on the machine side. With this structure, the distance to the steel strip can be easily controlled. In addition, the number of revolutions of the molten metal throttle 1 can be set arbitrarily.
  • the rectifying plate 2 is attached to the frame on which the servo motor is installed, and the distance between the steel strip side end of the rectifying plate 2 and the steel strip 3 is set to be the same as the distance between the molten metal squeeze roll 1 and the steel strip 3.
  • the distance between the bath surface and the upper end of the support roll in the bath on the side close to the bath surface was 8 O mm.
  • the diameter (D) is 50 mm
  • the distance between the bath surface and the center of the molten metal squeeze roll is fixed to 35 mm
  • the closest distance (Sr) between the molten metal squeeze roll 1 and the current plate 2 is fixed to 2 mm.
  • the shape of the rectifying plate 2 is an arc (Examples 1 to 3) as shown in Fig. 9 or an inverted L-shape (horizontal direction 70 mm, vertical direction 50 mm; Example 4) of Fig. 10 (a). did.
  • the length of the molten metal throttle 1 and the current plate 2 in the width direction of the steel strip was set to 200 mm, which is equivalent to gas-dipping nose.
  • the production conditions for the hot-dip galvanized steel strip are as follows: slit gap of the gas wiping nozzle 0 ⁇ 8 mm, distance of the gas wiping nozzle steel strip 7 mm, nozzle height from the hot-dip zinc bath 400 mm, hot-dip zinc bath temperature 4 6
  • the size of the steel strip to be manufactured was 0.8 mm thickness x 1.2 m width, and the coating weight was 45 g / m 2 on one side.
  • Table 2 shows the other production conditions, molten metal squeeze roll conditions, and the results of a survey of the amount of splash generated that is a product quality index.
  • Splash occurrence rate is the ratio of the length of steel strip that was determined to have splash defects in the inspection process to the length of steel strip that passed under each manufacturing condition, and includes mild splash defects that do not cause any practical problems. .
  • Example 10 and Comparative Example 2 were performed under conditions where the plate passing speed was increased to 4.0 m / s. In Comparative Example 2 using conventional equipment, splashes occurred frequently and operation was impossible.In Example 10, operation at a quality level better than the current 2.5 m / s was possible. became.
  • Example 1 1 is a condition in which the shape of the current plate 2 is an inverted L shape.
  • the splash reduction effect was slightly inferior to Examples 8 and 9, but a significant splash reduction effect was obtained compared to Comparative Example 1.
  • the molten metal squeezing tool that rotates in the direction opposite to the traveling direction of the steel strip in a non-contact manner with the steel strip and the flow straightening plate so as to cover this joint are attached to the steel strip.
  • the amount of splash generated can be further greatly reduced because the metal thickness can be adjusted by gas wiping after reducing the excess plating metal.
  • the device of this effort can be used as a manufacturing facility for molten metal-plated steel strips that reduce the occurrence of splash and have an excellent surface appearance. Since the apparatus of the present invention can suppress the occurrence of splash even during high-speed sheet feeding, it can be used as an apparatus for manufacturing a molten metal plated steel strip having an excellent surface appearance while maintaining high productivity.
  • the steel strip manufacturing method of the present invention can be used as a method for manufacturing a molten metal-plated steel strip that reduces the occurrence of splash and has an excellent surface appearance.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)

Abstract

La présente invention concerne un équipement de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide grâce auquel un gaz est pulvérisé à partir de buses d'enduction par projection de gaz, qui sont disposées à l'opposé des deux côtés d'un feuillard d'acier soumis à une traction en continu hors d'une cuve de plaquage de métal liquide, pendant que le feuillard d'acier est pincé au-dessus de la cuve de plaquage de métal liquide, des cylindres essoreurs de métal liquide étant disposés sur les côtés opposés du feuillard d'acier sans contact toutefois avec le feuillard d'acier au-dessus des cylindres de support présents dans le bain et au-dessous de la surface du bain de plaquage. Les cylindres essoreurs de métal liquide sont mus de sorte que la direction de rotation au niveau de la position la plus proche du feuillard d'acier corresponde à la direction inverse à la direction d'avancement du feuillard d'acier. Cet équipement de fabrication limite la survenue de projections et permet d'obtenir, de façon stable, un feuillard d'acier en bobine plaqué de métal liquide à la surface du plus bel aspect.
PCT/JP2008/063807 2007-07-30 2008-07-25 Equipement de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide et procédé de fabrication d'un feuillard d'acier en bobine plaqué de métal liquide WO2009017209A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-197681 2007-07-30
JP2007-197682 2007-07-30
JP2007197681A JP5194612B2 (ja) 2007-07-30 2007-07-30 溶融金属めっき鋼帯の製造装置及び溶融金属めっき鋼帯の製造方法
JP2007197682A JP5194613B2 (ja) 2007-07-30 2007-07-30 溶融金属めっき鋼帯の製造装置及び溶融金属めっき鋼帯の製造方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184377A1 (fr) * 2007-09-05 2010-05-12 JFE Steel Corporation Appareil de fabrication d'une bande d'acier plaquée par trempage à chaud
CN105316570A (zh) * 2015-12-11 2016-02-10 武汉钢铁(集团)公司 一种差厚锌层的热镀锌钢板及生产方法
CN110462092A (zh) * 2017-03-31 2019-11-15 杰富意钢铁株式会社 热浸镀金属钢带的制造方法以及其制造装置
US11313020B2 (en) 2017-03-31 2022-04-26 Jfe Steel Corporation Method and apparatus for manufacturing hot-dip metal plated steel strip

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS548124A (en) * 1977-06-21 1979-01-22 Nippon Steel Corp Controlling method for amount of molten metal adhered in continuous hot dipping
JPS55128570A (en) * 1979-03-29 1980-10-04 Nippon Steel Corp Continuous galvanizing apparatus for strip
JPS6288749U (fr) * 1985-11-26 1987-06-06
JPH06207263A (ja) * 1992-08-27 1994-07-26 Nkk Corp 溶融金属めっき装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS548124A (en) * 1977-06-21 1979-01-22 Nippon Steel Corp Controlling method for amount of molten metal adhered in continuous hot dipping
JPS55128570A (en) * 1979-03-29 1980-10-04 Nippon Steel Corp Continuous galvanizing apparatus for strip
JPS6288749U (fr) * 1985-11-26 1987-06-06
JPH06207263A (ja) * 1992-08-27 1994-07-26 Nkk Corp 溶融金属めっき装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2184377A1 (fr) * 2007-09-05 2010-05-12 JFE Steel Corporation Appareil de fabrication d'une bande d'acier plaquée par trempage à chaud
EP2184377A4 (fr) * 2007-09-05 2011-02-16 Jfe Steel Corp Appareil de fabrication d'une bande d'acier plaquée par trempage à chaud
CN105316570A (zh) * 2015-12-11 2016-02-10 武汉钢铁(集团)公司 一种差厚锌层的热镀锌钢板及生产方法
CN110462092A (zh) * 2017-03-31 2019-11-15 杰富意钢铁株式会社 热浸镀金属钢带的制造方法以及其制造装置
EP3604601A4 (fr) * 2017-03-31 2020-02-05 JFE Steel Corporation Procédé et dispositif de production d'une bande d'acier plaquée de métal par immersion à chaud
US11313020B2 (en) 2017-03-31 2022-04-26 Jfe Steel Corporation Method and apparatus for manufacturing hot-dip metal plated steel strip

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