JP2010242192A - Apparatus for producing hot-dip coated metal strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for producing a hot-dip coated metal strip, equipped with a molten metal narrowing down member for suppressing the lifting amount of a hot-dip coated metal lifted by a metal strip pulled up from a hot-dip coating metal bath. <P>SOLUTION: The apparatus 10 for producing a hot-dip coated metal strip includes a coating tank 12 holding the hot-dip coating metal bath 11, a sink roll 14 provided inside the coating tank 12 for changing the moving direction of a metal strip 13 which has advanced to the hot-dip coating metal bath 11 upwards, and a gas wiping nozzle 15 provided above the coating tank 12 for blowing a gas to both surfaces of the metal strip 13 pulled out from the hot-dip coating metal bath 11 and forming the hot-dip coated metal layer of a fixed thickness. In the apparatus 10, the apparatus is provided with paired narrowing down members 18, 19 which are entirely or partially disposed right below the bath surface of the hot-dip coating metal bath 11 and pressurize both surfaces of the metal strip 13 which has passed through the sink roll 14 over the entire width direction of the metal strip 13 through a precipitation layer 17 formed of accumulations and the hot-dip coated metal at the upper part of the hot-dip coating metal bath 11. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a manufacturing apparatus for a hot dipped metal strip, and more specifically, manufacturing a hot dipped metal strip that suppresses the lifting amount of the hot dipped metal that is lifted by excessive adhesion to the metal drawn by the hot dipped metal bath. Relates to the device.

A hot-dip metal strip that forms a constant thickness of hot-dip metal layer by blowing a gas from a gas wiping nozzle onto the hot-dip metal adhesion layer formed on the front and back surfaces of the hot-dip metal bath. In the production line of hot dip galvanized steel strip, it is necessary to increase the line speed (metal strip passing speed) in order to improve productivity. However, if the line speed is increased, the amount of the hot-dip plated metal that is lifted by adhering to the metal strip pulled up from the hot-dip metal bath increases rapidly. Therefore, it is necessary to increase the pressure and flow rate of the gas to be blown from, and there is a problem that the load of the gas wiping nozzle increases. Therefore, a non-contact type molten metal squeeze member is provided at a location upstream of the gas wiping nozzle so as to face the front and back surfaces of the metal band and face each other, and adheres to the metal band pulled up from the hot dipped metal bath. An apparatus for manufacturing a hot dip metal strip that can suppress the lift of the hot dip metal that is lifted up is disclosed (for example, see Patent Document 1).

JP 2004-76082 A

However, in the invention described in Patent Document 1, when the line speed increases (for example, when the line speed exceeds 150 to 180 mpm), the lifting amount of the hot-dip plated metal that is lifted by adhering to the metal band (hot-plated metal accompanying) Amount) increases, and a non-contact type molten metal drawing member has a problem that a sufficient drawing effect of the hot dip plated metal cannot be expected. In addition, if the molten metal squeeze member is arranged on both sides of the metal strip with a narrow gap that can fully exhibit the squeezing effect of the molten metal, the metal strip contacts the molten metal squeeze member if the shape of the metal strip is poor. Thus, there arises a problem that wrinkles enter the surface of the metal strip.

The present invention has been made in view of such circumstances, and is provided with a molten metal squeezing member capable of suppressing the amount of lifting of the molten plated metal that is lifted excessively in contact with the metal band pulled up from the molten plated metal bath. It aims at providing the manufacturing apparatus of a hot dipped metal strip.

An apparatus for producing a hot dipped metal strip according to the present invention that meets the above-described object is provided with a plating tank for holding a hot dipped metal bath, and a moving direction of the metal band provided in the hot dipped metal bath and entering the hot dipped metal bath. A sink roll that changes in the upward direction, and a gas wiping nozzle that is provided above the plating tank and that blows gas onto both surfaces of the metal strip drawn from the hot-dip metal bath to form a hot-dip metal layer with a certain thickness. In an apparatus for manufacturing a hot-dip metal strip having
The whole or a part of the hot-dip metal bath is disposed directly below the bath surface, and both sides of the metal strip that has passed through the sink roll are integrated over the entire width of the hot-dip metal bath. There is provided a pair of squeezing members that are pressed through a deposited layer formed from an object and a hot dipped metal.

In the hot dip metal strip manufacturing apparatus according to the present invention, it is preferable that the throttle member is hollow and the cooling gas passes inside.
Here, it is preferable that a temperature sensor is provided inside the throttle member.

In the apparatus for manufacturing a hot-dip metal strip according to the present invention, the pair of throttle members are arranged to face both surfaces of the metal strip, and the pressure for pressing the metal strip of the throttle member can be adjusted. It is preferable.
Further, it is preferable that the pair of diaphragm members are arranged to face both surfaces of the metal strip, and the height direction position of the diaphragm member is adjustable.

In the apparatus for manufacturing a hot-dip metal strip according to the present invention, the drawing member is brought into contact with both surfaces of the metal belt through the accumulation on the hot-dip metal bath and the deposited layer formed from the hot-dip metal, so that the metal It is possible to efficiently reduce the amount of hot-dip plated metal lifted by being attached to the belt. As a result, even if the line speed is increased, the amount of the hot-dip plated metal that is lifted by being attached to the metal strip can be suppressed, and a constant-thick hot-dip metal layer can be formed without increasing the load of the gas wiping nozzle. Can be formed.
In addition, since the deposited layer that is in direct contact with the metal band is softer than the metal band, no wrinkles are generated in the contact between the deposited layer and the metal band. It is possible to prevent wrinkles from entering the surface of the metal strip.
Furthermore, even if the deposited layer is worn by contact with the metal strip, the accumulated portion of the hot-dip metal bath and the hot-plated metal are continuously supplied to the deposited layer, so that the worn portion is regenerated and becomes maintenance-free. .

In the hot-dip plated metal strip manufacturing apparatus according to the present invention, when the throttle member is hollow and the cooling gas passes inside, the surface temperature of the throttle member can be kept at a constant temperature, for example, 420 ° C. or less. Accumulated material and hot-dipped metal can be continuously deposited on the surface side of the member.
When a temperature sensor is provided inside the throttle member, the surface temperature of the throttle member can be easily managed by adjusting the flow rate of the cooling gas.

In the apparatus for manufacturing a hot-dipped metal strip according to the present invention, when the pair of throttle members are disposed to face both surfaces of the metal strip, and the pressure for pressing the metal strip of the throttle member is adjustable, The lifting amount of the hot-dip plated metal after passing through the drawing member can be easily adjusted, and the connecting portion of the metal band (welded portion between the tail end portion of the preceding metal band and the tip portion of the subsequent metal band) passes. In this case, the diaphragm member can be quickly retracted.
In addition, when the pair of squeezing members are arranged opposite to both surfaces of the metal band and the height direction position of the squeezing member can be adjusted, the lifted amount of the hot dip metal is finely adjusted (hot dip metal) Prevention of over-squeezing).

(A) is explanatory drawing of the manufacturing apparatus of the hot dip metal strip which concerns on one embodiment of this invention, (B) is explanatory drawing which shows the contact state of a drawing member and a steel strip. It is a fragmentary sectional view of the squeeze member of the manufacturing apparatus of the hot dip metal strip. It is explanatory drawing of the arm member which concerns on a modification. (A), (B), (C) is explanatory drawing of the aperture member which concerns on a modification, respectively. It is explanatory drawing which shows the relationship between the line speed and lifting amount in an Example. It is explanatory drawing which shows the relationship between the line speed and lifting amount in the comparative example 1. It is explanatory drawing which shows the relationship between the line speed and the lifting amount in the comparative example 2.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1A and 1B, a hot-dip metal strip manufacturing apparatus 10 according to an embodiment of the present invention is a plating tank that holds a hot-dip zinc bath 11 that is an example of a hot-dip metal bath. 12, a sink roll 14 provided in the plating tank 12, which changes the moving direction of the steel band 13, which is an example of a metal band that has entered the molten zinc bath 11, and an upper side of the plating tank 12, and melted It has a gas wiping nozzle 15 for blowing a gas onto both surfaces of a steel strip 13 drawn from the zinc bath 11 to form a molten zinc layer having a constant thickness. A pair of support rolls 16 are provided on the downstream side (upper side) of the sink roll 14 in the molten zinc bath 11 to be in contact with and supported on both surfaces of the steel strip 13 whose movement direction is changed to the upward direction. ing.

Then, a part of the molten zinc bath 11 is disposed immediately below the bath surface, and both the surfaces of the steel strip 13 that has passed through the sink roll 14 are spread over the entire width direction of the steel strip 13, A pair of squeezing members 18 and 19 are provided to be pressed through a deposited layer 17 formed from molten zinc. Here, since the plating tank 12, the sink roll 14, the gas wiping nozzle 15, and the pair of support rolls 16 can be diverted from those used in a conventional hot-dip metal strip manufacturing apparatus, these The description regarding the diaphragm members 18 and 19 will be described.

As shown in FIGS. 1A and 2, the throttle members 18 and 19 are hollow, and are formed of, for example, a stainless steel tube. Further, on both sides of the diaphragm member 18, for example, stainless support members 20 and 21 are respectively sheathed, and the bottom portions of the support members 20 and 21 are fixed to both ends of the diaphragm member 18. Here, the throttle members 18 and 19 are disposed so that the longitudinal direction is parallel to the width direction of the steel strip 13 (horizontally arranged) and the steel strip 13 is disposed therebetween, and the support member that is externally mounted on the throttle member 18 20 and 21 are supported on the base side of an arm member 23 to which a gear 22 is attached on the front side, respectively, and gears 24 are also provided on the top sides of the support members 20 and 21 that are externally mounted on the throttle member 19. The base side of the attached arm member 25 is pivotally supported. The gear 22 and the gear 24 can have the same shape. The gears 22 and 24 are accommodated in a storage box 26 attached to a frame (not shown) of the hot-dip metal strip manufacturing apparatus 10, and one of the arm members 23 and 25 (FIG. 1). In (A), a rod 29 of a cylinder 28 fixed to a support base 27 attached to a frame of the manufacturing apparatus 10 for a hot-dip metal strip is pinned to an intermediate portion of the arm member 25).

With this configuration, when the cylinder 28 is driven and the rod 29 is extended (advanced), the arm member 25 rotates inward with the gear 24 as a fulcrum, and when the gear 24 rotates, The meshing gear 22 rotates in the opposite direction to the gear 24, and the arm member 23 rotates inward with the gear 22 as a fulcrum. As a result, the throttle members 18 and 19 are also rotated toward the steel strip 13 via the support members 20 and 21 connected to the base sides (lower ends) of the arm members 23 and 25, so that the throttle members 18 and 19 are rotated. Can be brought closer to the steel strip 13. On the other hand, when the cylinder 28 is driven and the rod 29 is contracted (retracted), the arm member 25 rotates outward from the steel strip 13 with the gear 24 as a fulcrum, and when the gear 24 rotates, the gear meshes with the gear 24. 22 rotates in the opposite direction to the gear 24, and the arm member 23 rotates outward with the gear 22 as a fulcrum. As a result, the throttle members 18 and 19 are also rotated outward via the support members 20 and 21 connected to the base sides of the arm members 23 and 25, and the throttle members 18 and 19 are moved away from the steel strip 13. be able to.

FIG. 3 shows arm members 41 and 42 having a tie rod structure according to a modification. Here, the arm member 41 has a rod-like upper arm 44 in which the gear 22 is attached to the front side and the male screw portion 43 is formed on the base side, and a male screw portion 45 is formed on the base side and the enlarged diameter portion 46 is formed on the base side. A rod-shaped intermediate arm 47 formed on the front side, a rod-shaped lower arm 49 formed with an enlarged diameter portion 48 on the front side and a base side pivotally supported on the top of the support member 20, a base side of the upper arm 44, and a base side of the intermediate arm 47. A female threaded portion 50 that is threadedly engaged with the distal side is formed on the inner side to form a tubular screw-type fitting 51 that connects the proximal side of the upper arm 44 and the distal side of the intermediate arm 47, the enlarged-diameter portion 46 of the intermediate arm 47, and A fixed metal fitting 52 is provided in which the enlarged diameter portion 48 of the lower arm 49 is brought into contact with the lower arm 49 so as to be rotatable about the axis.

The arm member 42 has a rod-like upper arm 53 in which the gear 24 is attached to the front side and a male screw portion 43 is formed on the base side, and a male screw portion 45 is formed on the front side and a diameter-expanded portion 46 is formed on the base side. A rod-shaped intermediate arm 54, a rod-shaped lower arm 55 formed with an enlarged diameter portion 48 on the front side and a base side pivotally supported on the top of the support member 21, a base side of the upper arm 53, and a front side of the intermediate arm 54 Female threaded portions 50 that are respectively screwed with each other, and a tubular screw-type coupling fitting 56 that connects the base side of the upper arm 53 and the distal side of the intermediate arm 54, the diameter-enlarged portion 46 and the lower arm of the intermediate arm 54 And a fixing bracket 57 that abuts the diameter-expanded portion 48 of 55 and is rotatably connected about the axis. A cylinder fixed to a support 27 attached to the frame of the hot-dip metal strip manufacturing apparatus 10 is fixed to one of the arm members 41 and 42, for example, an intermediate portion of the lower arm 55 of the arm member 42. 28 rods 29 are pinned.

Accordingly, by operating the cylinder 28, the throttle members 18 and 19 can be brought close to the steel strip 13 or away from the steel strip 13. In addition, the length of the arm members 41 and 42 can be expanded and contracted by rotating the screw-type coupling brackets 51 and 56 around the axis center by using either the male screw portion 43 or the male screw portion 45 as a reverse screw. It is possible to adjust the height position of the squeezing members 18 and 19 in the bath of the molten zinc bath 11 (the depth of the squeezing members 18 and 19 immersed in the molten zinc bath 11).

Through holes 30 and 31 are formed on both sides of the throttle members 18 and 19, and gas pipes 32 made of, for example, stainless steel are connected to the inside of the throttle members 18 and 19 on the outer side of the throttle members 18 and 19. 33 is connected. Further, a thermocouple 34 as an example of a temperature sensor is inserted into one of the gas pipes 32 and 33 (the gas pipe 33 in FIG. 2), and the temperature measuring portion 34a of the thermocouple 34 It is fixed to the inner longitudinal center. And the base side of the gas piping 33 is connected to the nitrogen source (not shown) which is an example of cooling gas.

With this configuration, the nitrogen gas in the throttle members 18 and 19 is introduced to the outside through the gas pipe 32 while introducing nitrogen gas from the nitrogen source through the gas pipe 33 into the throttle members 18 and 19. Thus, the inside of the throttle members 18 and 19 can be cooled. At this time, since the temperature of the central portion in the longitudinal direction inside the throttle members 18 and 19 can be measured by the thermocouple 34, the flow rate of the nitrogen gas supplied from the nitrogen source is adjusted based on the temperature measured by the thermocouple 34. Thus, the inside temperature of the throttle members 18 and 19 can be adjusted.

In this embodiment, as shown in FIGS. 1 (A) and 1 (B), the cylindrical throttle members 18 and 19 are placed just below the bath surface of the molten zinc bath 11 with the steel strip 13 in between. The squeezing members 18 and 19 are disposed opposite to each other at the same height position. However, as shown in FIG. 4A, the height of the squeezing members 35 and 36 to be paired in the molten zinc bath 11 is increased. The squeezing members 35 and 36 may be arranged so as to be immersed directly below the bath surface of the molten zinc bath 11 with the steel strip 13 in between.
Further, as shown in FIG. 4 (B), a rectangular (including a square) throttle members 37 and 38 in a cross-sectional view, a part of which is directly below the bath surface of the molten zinc bath 11 with the steel strip 13 in between. The squeezing members 37 and 38 can be immersed and placed directly below the bath surface of the molten zinc bath 11 and arranged opposite to each other at the same height position. You can also.
Furthermore, as shown in FIG. 4 (C), the parallelogram-shaped drawing members 39 and 40 in a cross-sectional view are partially immersed immediately below the bath surface of the molten zinc bath 11 with the steel strip 13 in between. When opposingly arranged at the same height position, the steel strip 13 can be disposed such that a recess is formed on the entry side and a protrusion is formed on the discharge side. 11 may be immersed immediately below the bath surface.

Then, the effect | action of the manufacturing apparatus 10 of the hot dip metal strip which concerns on one embodiment of this invention is demonstrated.
The throttle members 18 and 19 are hollow so that nitrogen gas can pass through them, and the temperature measuring part 34a of the thermocouple 34 is attached to the inside of the throttle members 18 and 19, so that the thermoelectric The flow rate of nitrogen gas passing through the inside of the throttle members 18 and 19 can be adjusted based on the inside temperature of the throttle members 18 and 19 measured in the pair 34. As a result, the inner temperature of the throttle members 18 and 19 can be adjusted, and the surface temperature of the throttle members 18 and 19 can be managed based on the inner temperature of the throttle members 18 and 19. Thereby, the surface temperature of the throttle members 18 and 19 can be maintained at a constant temperature, for example, 420 ° C. or less.

Here, since the squeezing members 18 and 19 are partly disposed immediately below the bath surface of the molten zinc bath 11, there are aggregates of zinc oxide aggregates and molten zinc around them. Therefore, when the surface temperature of the squeezing members 18 and 19 is kept at 420 ° C. or less, the accumulated material and molten zinc contacting the outer peripheral surfaces of the squeezing members 18 and 19 are deprived of heat through the outer peripheral surfaces of the squeezing members 18 and 19. (Cooled), the deposit and molten zinc solidify. For this reason, the precipitation layer 17 which has the aggregate of zinc oxide and the solidified zinc is formed on the surface of the throttle members 18 and 19.

Then, the throttle member 18 and 19 is moved toward the steel strip 13 by operating the cylinder 28 to adjust the pressure for pressing the throttle members 18 and 19 against the steel strip 13, thereby reducing the throttle member 18 via the precipitation layer 17. , 19 can be brought into contact with both surfaces of the moving steel strip 13 and pressed with a constant contact force (for example, 5 to 100 kgf). Thereby, the lift amount of the molten zinc which adheres to both surfaces of the steel strip 13 pulled up from the molten zinc bath 11 and can be lifted can be narrowed down efficiently. As a result, even if the line speed of the steel strip 13 increases, a molten zinc layer having a constant thickness can be formed without increasing the load on the gas wiping nozzle 15.

In addition, since the squeezing members 18 and 19 are arranged so as to be partly immersed immediately below the bath surface of the molten zinc bath 11, the accumulations present above the molten zinc bath 11 are excluded by the squeezing members 18 and 19. Thus, it exists around the throttle members 18 and 19. For this reason, it is prevented that the accumulation which exists in the upper part of the molten zinc bath 11 contacts the steel strip 13 which passes between the throttle members 18 and 19 and is pulled up from the molten zinc bath 11, and accumulates on the surface of the steel strip 13. It is possible to prevent objects from adhering.

Here, since the precipitation layer 17 that is in direct contact with the steel strip 13 is softer than the steel strip 13, no wrinkles are generated in the contact between the precipitation layer 17 and the steel strip 13, the shape of the steel strip 13 is poor, and the throttle members 18, 19 It is possible to prevent wrinkles from entering the surface of the steel strip 13 even if the contact is strong.
Further, since there is always an accumulation around the precipitation layer 17, even if the precipitation layer 17 comes into contact with the steel strip 13 and a wear portion is formed, the accumulation is deposited on the wear portion and the wear portion is not formed. As a result, the deposited layer 17 becomes maintenance-free.
Furthermore, when tracking of the connecting portion of the steel strip 13 (welded portion between the tail end portion of the preceding steel strip and the tip portion of the succeeding steel strip), when the connecting portion passes between the throttle members 18 and 19, By operating the cylinder 28 and retracting the throttle members 18 and 19 quickly, the collision between the connecting portion and the throttle members 18 and 19 can be avoided. Then, when the connecting portion passes, the squeezing members 18 and 19 are quickly brought into contact with the steel strip 13, and the lift amount of the molten zinc that is lifted by adhering to both surfaces of the steel strip 13 pulled up from the molten zinc bath 11 can be reduced. it can.

Further, as shown in FIG. 3, the arm members 41 and 42 have a tie rod structure, and the depth of the squeezing members 18 and 19 to be immersed in the molten zinc bath 11 by manually changing the length of the arm members 41 and 42. When the molten zinc is excessively squeezed, the depth of the squeezing members 18 and 19 submerged in the molten zinc bath 11 is increased so that the molten zinc can be lifted by being attached to both surfaces of the steel strip 13 Can be adjusted (increased).

When the steel strip is moved into the water tank at a speed of 60 to 240 mpm, the moving direction is changed upward by a sink roll provided in the water tank and the pipe is pulled up from the water, and is a tubular throttle with an outer diameter of 30 mm arranged just below the water surface. The thickness of the water adhering to the steel strip pulled from the water by pressing both sides of the steel strip with the member across the entire width direction of the steel strip is 91.5 mm, 141.5 mm, and 191.5 mm from the water surface. Was measured using a laser thickness gauge. The result is shown in FIG.

Due to the limitation of the detection accuracy of the laser thickness gauge used, an accurate value cannot be obtained when the film thickness of water is 0.3 mm or less. However, by providing a throttle member, when the speed of the steel strip is 150 mpm or less, The film thickness can be suppressed to 0.3 mm or less. Moreover, when the speed of the steel strip exceeds 150 mpm, the film thickness of water increases as the speed increases. When the speed of the steel strip is 240 mpm, 0.94 mm at a position of 91.5 mm from the water surface and 141.5 mm from the water surface. It was 0.76 mm at the position and 0.69 mm at the position 191.5 mm from the water surface.

(Comparative Example 1)
When a steel strip is made to enter the water tank at a speed of 60 to 240 mpm and the moving direction is changed upward by a sink roll provided in the water tank, a tubular throttle member having an outer diameter of 30 mm is directly below the water surface. Installed over the entire width of the steel strip, 0.1 mm away from the steel strip on both sides of the steel strip, and the film thickness of water adhering to the steel strip pulled up from the water is 141.5 mm and 191.5 mm from the water surface. The position was measured using a laser thickness gauge. The result is shown in FIG.
When the speed of the steel strip exceeds 120 mpm, the film thickness of the water greatly increases with the increase of the speed. When the speed of the steel strip is 240 mpm, it is 1.96 mm at a position of 141.5 mm from the water surface and 191.5 mm from the water surface. The position was 1.42 mm.

(Comparative Example 2)
The steel strip is made to enter the water tank at a speed of 60 to 240 mpm, the moving direction is changed upward by a sink roll provided in the water tank, the film is pulled up from the water, and the film thickness of the water adhering to the steel band pulled up from the water is Measurements were made using a laser thickness gauge at positions 141.5 mm and 191.5 mm from the water surface. The result is shown in FIG.
When the speed of the steel strip exceeds 120 mpm, the film thickness of the water further increases as compared with the speed of Comparative Example 1, and when the speed of the steel strip is 240 mpm, it is 2.53 mm at a position 141.5 mm from the water surface. It was 1.87 mm at a position of 191.5 mm from the water surface.

Therefore, it can be confirmed that the film thickness of the water adhering to the steel strip pulled up from the water is greatly reduced by bringing the drawing member into contact with both surfaces of the steel strip even if the speed of the steel strip increases. Even when the steel strip is pulled up from the bath, it is considered that the amount of molten zinc lifted by the steel strip can be greatly reduced by bringing the drawing members into contact with both sides of the steel strip.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.
For example, although an example of a hot dip zinc bath has been described as an example of a hot dip metal bath, needless to say, the hot dip metal may be other hot dip metal such as hot dip aluminum.
Further, the drawing member that presses the steel strip can be pressed by an independent cylinder without using a gear, and the amount of lift of the hot-dip plated metal on both sides of the steel strip can be adjusted independently.

DESCRIPTION OF SYMBOLS 10: Manufacturing apparatus of hot dip metal strip, 11: Hot dip zinc bath, 12: Plating tank, 13: Steel strip, 14: Sink roll, 15: Gas wiping nozzle, 16: Support roll, 17: Precipitation layer, 18, 19 : Throttle member, 20, 21: support member, 22: gear, 23: arm member, 24: gear, 25: arm member, 26: storage box, 27: support base, 28: cylinder, 29: rod, 30, 31 : Through-hole, 32, 33: Gas piping, 34: Thermocouple, 34a: Temperature measuring part, 35-40: Throttle member, 41, 42: Arm member, 43: Male screw part, 44: Upper arm, 45: Male screw part , 46: Expanded portion, 47: Intermediate arm, 48: Expanded portion, 49: Lower arm, 50: Female thread portion, 51: Screw-type coupling bracket, 52: Fixing bracket, 53: Upper arm, 54: Intermediate arm, 55: Lower arm, 56: Ne Formula connecting fitting, 57: fixing bracket

Claims (5)

A plating tank for holding a hot dipped metal bath, a sink roll that is provided in the plating tank and changes the moving direction of the metal band that has entered the hot dipped metal bath, and is provided above the plating tank, In a hot-dip metal strip manufacturing apparatus having a gas wiping nozzle that blows gas on both surfaces of the hot metal strip drawn from the hot-dip metal bath to form a hot-dip metal layer having a constant thickness,
The whole or a part of the hot-dip metal bath is disposed directly below the bath surface, and both sides of the metal strip that has passed through the sink roll are integrated over the entire width of the hot-dip metal bath. An apparatus for producing a hot-dip metal strip, comprising a pair of squeezing members that are pressed through a deposited layer formed of an object and hot-dip metal. 2. The apparatus for manufacturing a hot-dip metal strip according to claim 1, wherein the drawing member is hollow and a cooling gas passes inside. 3. The apparatus for manufacturing a hot-dip metal strip according to claim 2, wherein a temperature sensor is provided inside the drawing member. The hot-dip metal strip manufacturing apparatus according to any one of claims 1 to 3, wherein the pair of throttle members are arranged to face both surfaces of the metal strip, and the metal strip of the throttle member. The apparatus for producing a hot dipped metal strip, wherein the pressure for pressing is adjustable. In the manufacturing apparatus of the hot dipped metal strip according to any one of claims 1 to 4, the pair of throttle members are arranged to face both surfaces of the metal strip, and the height direction of the throttle member An apparatus for producing a hot-dip metal strip, the position of which is adjustable.

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