JP2004105984A - Sealing device on inlet side of rolling mill - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve a sealing performance between a surrounded casing and the work rolls of a rolling mill. <P>SOLUTION: A strip 40 which is positioned between sealing panels 42 and the work rolls 32, 35 is isolated from the outdoor air with an inert gas which is jetted from nozzles 47 provided above and below the opening 41 of the sealing panels 42 toward the barrel parts of the work rolls 32, 35 and the inert gas which is introduced from ducts 50 provided on the right and the left of the sealing panels 42 to the neck parts of the work rolls 32, 35. Furthermore, the leakage of the inert gas from between the barrel parts of the work rolls 32, 35 and the sealing panels 42 is restrained with side liners 52 which are provided on the right and the left of the sealing panels 42. The hermeticity between a movable frame 39, a surrounded casing 38 and the sealing panel 42 is ensured and the inflow of the outdoor air in the inside of the encircled casing 38 with a sealing member 62 on the upstream side and the sealing member 61 on the downstream side is inhibited. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a rolling mill entrance side sealing device.
[0002]
[Prior art]
As an example of a conventional twin-roll caster, there is one as shown in Patent Document 1.
[0003]
[Patent Document 1]
JP-A-9-174204
As shown in FIGS. 8 and 9, the twin-roll caster disclosed in Patent Document 1 includes a pair of cooling rolls 1 and a tundish 3 for forming a molten metal pool 2 between the cooling rolls 1. A threading table 5 capable of laterally guiding the strip 4 delivered downward from between the cooling rolls 1 and an upstream side in the strip transport direction so as to clamp the strip 4 passing through the threading table 5 in the thickness direction thereof. And upper and lower catch rolls 6, upper and lower pinch rolls 7, rolling mills 8, and upper and lower pinch rolls 9, which are sequentially arranged from the bottom to the downstream side, and a coiler 10 for sequentially winding the strip 4 having passed through the pinch rolls 9. ing.
[0005]
The rolling mill 8 includes upper and lower work rolls 11 and upper and lower stay rolls 12.
[0006]
The strip transport path from the cooling roll 1 to the pinch roll 7 is surrounded by an enclosure 13.
[0007]
The surrounding housing 13 is provided with a seal member 14 that contacts the outer peripheral surface of the cooling roll 1 and a seal member 15 that contacts the outer peripheral surface of the pinch roll 7.
[0008]
The strip transport path from the pinch roll 7 to the work roll 11 of the rolling mill 8 is surrounded by an enclosure 16.
[0009]
The surrounding housing 16 is provided with a seal member 17 that contacts the outer peripheral surface of the pinch roll 7 and a seal member 18 that contacts the outer peripheral surface of the work roll 11.
[0010]
A strip transport path from the work roll 11 to a position just before the pinch roll 9 is surrounded by an enclosure 19.
[0011]
The surrounding housing 19 is provided with a seal member 20 that comes into contact with the outer peripheral surface of the work roll 11.
[0012]
A labyrinth seal or a wire seal formed by a large number of metal wires is applied to the seal members 14, 15, 17, 18, and 20.
[0013]
A shutter 21 is provided at a downstream end of the surrounding housing 19 in the strip transport direction.
[0014]
The shutter 21 has a lower shielding plate 22 fixed to the end of the enclosure 19 so as to be located below the strip 4, and a shutter 21 which is located above the lower shielding plate 22 and moves up and down along the end of the enclosure 19. A possible upper shielding plate 23, a pair of side shielding plates 24 which can be moved close to and away from each other in the horizontal direction along the shielding plates 22, 23, a cylinder 25 for moving the upper shielding plate 23 up and down, A cylinder 26 for moving the shielding plate 24 to the left and right is provided. By operating the cylinders 25 and 26, the upper edge of the lower shielding plate 22, the lower edge of the upper shielding plate 23, and the opposing side shielding plates 24 are opposed to each other. The area of the opening surrounded by the edge to be adjusted can be adjusted in accordance with the sectional shape of the strip 4.
[0015]
Inside the above-mentioned surrounding housing 13, a pair of nozzle groups 27 facing the upper and lower surfaces of the strip 4 between the cooling roll 1 and the catch roll 6, and the strip 4 between the catch roll 6 and the pinch roll 7 A pair of nozzle groups 28 are provided on both upper and lower surfaces.
[0016]
The nozzle group 27 is configured to be movable in the horizontal direction, so that the threading table 5 can rotate between a position indicated by a solid line and a position indicated by a two-dot chain line in FIG.
[0017]
A pair of nozzle groups 29 facing the upper and lower surfaces of the strip 4 between the pinch roll 7 and the work roll 11 of the rolling mill 8 are provided inside the surrounding housing 16.
[0018]
Inside the enclosure 19, a pair of nozzle groups 30 are provided between the work roll 11 of the rolling mill 8 and the shutter 21 so as to face both upper and lower surfaces of the strip 4.
[0019]
Further, a nitrogen gas supply source (not shown) is connected to the enclosures 13, 16, 19 and the nozzle groups 27, 28, 29, 30.
[0020]
That is, before the casting of the strip 4 is started, an inert gas such as nitrogen is supplied to each of the enclosures 13, 16, and 19, and the interiors of the enclosures 13, 16, and 19 are set to a non-oxidizing atmosphere. When the strip 4 is continuously cast, an inert gas is supplied to each of the nozzle groups 27, 28, 29, and 30 to suppress oxidation of the strip 4.
[0021]
[Problems to be solved by the invention]
However, when the twin-roll caster shown in FIGS. 8 and 9 is realized as an actual machine, only the sealing member 18 that comes into contact with the outer peripheral surfaces of the upper and lower work rolls 11 of the rolling mill 8 requires the surrounding casing 16 upstream of the strip transport path. It is not possible to efficiently suppress the flow of the inert gas from the outside to the outside, and there is a concern that an oxide film may be formed on the surface of the strip 4.
[0022]
The present invention has been made in view of the above-described circumstances, and has as its object to improve the sealing performance between an enclosure and a work roll of a rolling mill.
[0023]
[Means for Solving the Problems]
In order to achieve the above object, a sealing device for a rolling mill according to claim 1 of the present invention has an opening through which a strip can pass and a shaft box of one of the work rolls facing a pair of work rolls. A first gas sealing means provided on the seal panel and capable of ejecting an inert gas in a curtain shape extending in a lateral direction toward a barrel portion of the work roll; and a first gas sealing means provided on the seal panel; A second gas sealing means capable of ejecting an inert gas toward a neck portion of the work roll; and an inert gas having a projecting portion inserted between the neck portions of the work roll and ejected by the second gas seal means. Frame that can enclose the surrounding housing and can move close to and away from the seal panel, and a movable frame that can contact the entire circumference of the seal panel Includes a downstream seal member provided, the upstream-side seal member provided on the movable frame such that the outer surface of the surrounding housing and may abut.
[0024]
A side liner having a protruding portion having a shape corresponding to the interval between the upper and lower neck portions when the outer diameter of the barrel portion of the upper and lower work rolls is equal to or greater than a predetermined value. And a replacement side liner having a protruding portion having a shape corresponding to the interval between the upper and lower neck portions when the outer diameter of the barrel portion of the upper and lower work rolls falls below a predetermined value, and attaching and detaching these side liners to and from the seal panel. It is configured to be able to do.
[0025]
The rolling mill entrance-side sealing device according to claim 3 of the present invention is configured so that an inert gas can be charged into a space surrounded by the movable frame, the surrounding housing, the downstream sealing member, and the upstream sealing member.
[0026]
According to a fourth aspect of the present invention, in the rolling mill entrance-side sealing device, a double-walled structure having a passage through which a cooling fluid can flow is formed in a sealing panel.
[0027]
The sealing apparatus for the rolling mill according to the fifth aspect of the present invention uses a double-walled structure having a passage through which a cooling fluid can flow inside as a movable frame.
[0028]
According to a sixth aspect of the present invention, there is provided a rolling mill entry side sealing device provided with a pressing means for urging the movable frame toward the downstream side in the strip transport direction.
[0029]
In the rolling mill entrance-side sealing device according to claim 1 of the present invention, an inert gas blown from the first gas sealing means provided on the seal panel to the barrel portion of the upper and lower work rolls, and the second gas provided on the seal panel. The strip moving between the seal panel and the upper and lower work rolls is isolated from the outside air by an inert gas guided from the second gas sealing means to the neck portion via the side liner, thereby preventing oxidation of the strip.
[0030]
Further, the side liner suppresses the leakage of the inert gas from between the barrel portion of the upper and lower work rolls and the seal panel to the outside.
[0031]
The upstream seal member and the downstream seal member ensure airtightness between the enclosure and the movable frame, and between the seal panel and the movable frame, and prevent outside air from flowing into the enclosure.
[0032]
In the rolling mill entry side sealing device according to the second aspect of the present invention, when the outer diameter of the barrel portion of the upper and lower work rolls falls below a predetermined value due to wear, grinding, or the like, the existing side liner is replaced with a replacement side liner. A liner is used to avoid interference between the side liner and the neck of the upper and lower work rolls.
[0033]
In the sealing device according to the third aspect of the present invention, the space surrounded by the movable frame, the enclosure, the downstream seal member, and the upstream seal member is filled with an inert gas, and the inside of the enclosure is sealed. More effectively prevent the outside air from flowing into the vehicle.
[0034]
In the rolling mill entrance-side sealing device according to claim 4 of the present invention, a cooling fluid is circulated through a passage inside the double-walled structure to cool the seal panel, resulting in thermal deformation of the seal panel. The interference between the side liner and the neck part of the upper and lower work rolls is avoided, and the close contact between the downstream seal member attached to the movable frame and the seal panel is ensured.
[0035]
In the rolling mill entrance-side sealing device according to claim 5 of the present invention, the movable frame is cooled by circulating a cooling fluid through the passage inside the double-walled structure to avoid thermal deformation of the movable frame. Thus, the close contact between the upstream seal member and the enclosure and the close contact between the downstream seal member and the seal panel are ensured.
[0036]
In the sealing device according to the sixth aspect of the present invention, the movable frame is urged toward the downstream side in the strip conveying direction by the pressing means to improve the adhesion between the downstream side sealing member and the seal panel. .
[0037]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0038]
FIGS. 1 to 7 show an example of an embodiment of a rolling mill entrance-side sealing device of the present invention. This sealing device is arranged on the entrance side of a rolling mill 31 and pivots a lower work roll 32. The seal frame 34 mounted on the supporting axle box 33, the beam 37 mounted on the axle box 36 disposed on the entrance side of the rolling mill 31 and supporting the upper work roll 35, are positioned relative to the entrance side of the rolling mill 31. And a movable frame 39 which surrounds the surrounding housing 38 in the circumferential direction and is capable of approaching to and separating from the rolling mill 31.
[0039]
The seal frame 34 has an opening 41 through which the strip 40 passing through the surrounding housing 38 toward the rolling mill 31 can pass, and a seal panel 42 arranged to face the work rolls 32 and 35, and a lower edge of the opening 41. Inlet guides 43 and 44 extending along the upper and lower edge portions, and sealing so as to be positioned above and below the opening 41 and parallel to the barrel portions 45 and 46 of the work rolls 32 and 35 (see FIG. 5). A plurality of inert gas injection nozzles 47 (see FIG. 1) attached to the panel 42 are located on the left and right of the opening 41 and opposed to the neck portions 48 and 49 of the work rolls 32 and 35 (see FIG. 5). A duct 50 formed integrally with the seal panel 42 for injecting an inert gas, and a protruding portion 51 between the neck portions 48 and 49 extending along the outer peripheral surface thereof. 0 to detachable side liner 52, and replacement of the side liner 53 is constructed de (see FIG. 7).
[0040]
Wipers 54 and 55 extending parallel to the lower work roll 32 and in contact with the barrel portion 45 and a wiper 56 extending parallel to the upper work roll 35 and in contact with the barrel portion 46 are attached to the seal panel 42. (See FIG. 1).
[0041]
The wiper 54 is provided for wiping the cooling water poured on the work roll 32, and the wipers 55 and 56 are provided for equalizing the film thickness of the rolling oil sprayed on the barrel portions 45 and 46. .
[0042]
The seal panel 42 is a double-walled structure in which a passage through which cooling water can flow is formed, and a cooling water supply pipe and a cooling water discharge pipe (not shown) are connected to the passage. .
[0043]
Thereby, the cooling water is continuously supplied to the passage to cool the seal panel 42, and the thermal deformation of the seal panel 42 is suppressed.
[0044]
The seal panel 42 is fastened to the axle box 33 and is integrated with the lower work roll 32 so as to be taken in and out of the rolling line.
[0045]
A gas supply pipe (not shown) is connected to the nozzle 47 and the duct 50 so that an inert gas such as a nitrogen gas is supplied.
[0046]
The nozzles 47 arranged below the opening 41 eject the inert gas in a curtain shape extending in the lateral direction from the gas discharge port toward the barrel portion 45 of the work roll 32, and the nozzles 47 arranged above the opening 41. Ejects an inert gas in the form of a curtain extending laterally from the gas discharge port toward the barrel portion 46 of the work roll 35.
[0047]
The duct 50 has a plurality of gas discharge holes 57 (see FIG. 6) facing the outer peripheral surfaces of the neck portions 48 and 49 of the work rolls 32 and 35, and the gas discharge holes 57 are closer to the neck portions 48 and 49. Inert gas is blown out.
[0048]
The side liners 52 and 53 are formed so as to fit outside the duct 50, have a slit 58 (see FIG. 6) extending vertically and opening to the neck portions 48 and 49, and have the gas discharge holes. The inert gas having passed through 57 is guided to the vicinity of the neck portions 48 and 49, and is ejected from the slit 58.
[0049]
The shape of the projecting portion 51 of the side liner 52 is such that the interval between the neck portions 48, 49 and the projecting portion 51 is below the injection position of the inert gas by the nozzle 47 above the opening 41 so that the barrel portion 45, The difference between the outer diameter D1 of the neck portion 48 and the outer diameter D0 of the neck portion 48 and the outer diameter D0 of the neck portion 46 is set so as not to exceed (see FIG. 7).
[0050]
That is, the side liner 52 suppresses leakage of the inert gas from between the barrel portions 45 and 46 and the seal panel 42 to the outside.
[0051]
On the other hand, when the barrel portions 45, 46 are reduced to the outer diameter D2 due to wear, grinding, or the like, the centers of the two work rolls 32, 35 are relatively close to each other, and the distance between the neck portions 48, 49 and the protruding portion 51 is reduced. There is a concern that they may interfere.
[0052]
In such a case, the side liner 52 is replaced with a replacement side liner 53.
[0053]
The shape of the protruding portion 51 of the side liner 53 is such that the distance between the neck portions 48 and 49 and the protruding portion 51 is reduced below the injection position of the inert gas by the nozzle 47 above the opening 41. It is set so as not to exceed the difference between the outer diameter D0 of the neck portions 48 and 49 with respect to the outer diameter D2 (see FIG. 7).
[0054]
That is, the side liner 53 suppresses leakage of the inert gas from between the barrel portions 45 and 46 and the seal panel 42 to the outside.
[0055]
In addition, an inert gas guided toward the neck portions 48 and 49 by the side liners 52 and 53 and an inert gas ejected from the nozzles 47 above and below the opening 41 toward the barrel portions 45 and 46 of the work rolls 32 and 35. However, the strip 40 that moves to the work rolls 32 and 35 via the seal panel 42 is isolated from the outside air.
[0056]
The beam 37 is provided with a wiper 59 extending parallel to the upper work roll 35 and in contact with the barrel portion 46, and a seal member 60 in contact with substantially the entire upper edge portion of the seal panel 42 (see FIG. 1).
[0057]
The wiper 59 is provided for wiping the cooling water that has been poured onto the work roll 35.
[0058]
The upstream side of the surrounding housing 38 in the strip transport direction is connected to a twin-roll caster having a pair of cooling rolls and the like, and the inside of the surrounding housing 38 is maintained in an inert gas atmosphere.
[0059]
The surrounding housing 38 is a double-walled structure in which a passage through which cooling water can flow is formed, and a cooling water supply pipe and a cooling water discharge pipe (not shown) are connected to the passage. I have.
[0060]
The movable frame 39 is provided with a downstream seal member 61 that is in contact with the entire periphery of the peripheral portion of the opening 41 of the seal panel 42 and an upstream seal member 62 that is in contact with the entire outer surface of the enclosure 38.
[0061]
Further, in a space surrounded by the movable frame 39, the surrounding housing 38, the downstream seal member 61, and the upstream seal member 62, an inert gas is provided via a gas inflow chamber 63 (see FIG. 1) inside the movable frame 39. The space is filled with an inert gas, whereby the inflow of outside air into the enclosure 38 is effectively prevented.
[0062]
The movable frame 39 is a double-walled structure in which a passage through which cooling water can flow is formed, and a cooling water supply pipe and a cooling water discharge pipe (not shown) are connected to the passage. .
[0063]
Thereby, the movable frame 39 is cooled by continuously supplying the cooling water to the passage, and the thermal deformation of the movable frame 39 is suppressed.
[0064]
By suppressing the thermal deformation of the movable frame 39 and the above-described thermal deformation of the seal panel 42, the adhesion of the upstream seal member 62 to the surrounding housing 38 and the adhesion of the downstream seal member 61 to the seal panel 42 are improved. Secure.
[0065]
Further, cylinders 64 and 65 are arranged below and above the movable frame 39 in parallel with the strip transport direction.
[0066]
The housings of these cylinders 64, 65 are fastened to a fixed structure, and the piston rod is connected to brackets 66, 67 provided on the movable frame 39.
[0067]
Therefore, when fluid pressure is applied to the cylinders 64 and 65 to urge the movable frame 39 downstream in the strip transport direction, the adhesion between the downstream seal member 61 and the seal panel 42 is improved.
[0068]
As described above, in the above-described sealing device on the inlet side of the rolling mill, the inert gas ejected from the nozzle 47 provided on the seal panel 42 toward the barrel portions 45 and 46 of the work rolls 32 and 35 and the inert gas provided on the seal panel 42 are provided. The strip 40 moving between the seal panel 42 and the work rolls 32 and 35 is exposed to the outside air by the inert gas introduced from the duct 50 through the side liners 52 and 53 to the neck portions 48 and 49 of the work rolls 32 and 35. Therefore, the strip 40 can be prevented from being oxidized.
[0069]
Furthermore, the side liners 52 and 53 provided on the left and right sides of the seal panel 42 suppress the leakage of the inert gas from between the barrel portions 45 and 46 of the work rolls 32 and 35 and the seal panel 42 to the outside. Gas consumption can be reduced.
[0070]
The upstream seal member 62 ensures airtightness between the surrounding housing 38 and the movable frame 39, and the downstream seal member 61 ensures airtightness between the seal panel 42 and the movable frame 39. The outside air can be prevented from flowing into the air.
[0071]
The rolling-stock-side sealing device of the present invention is not limited to the above-described embodiment, but may be modified without departing from the scope of the present invention.
[0072]
【The invention's effect】
As described above, according to the rolling mill entry side sealing device of the present invention, various excellent effects as described below can be obtained.
[0073]
(1) In the rolling mill entrance-side sealing device according to the first aspect of the present invention, an inert gas blown from the first gas sealing means provided on the seal panel to the barrel portion of the upper and lower work rolls, and the inert gas provided on the seal panel. The strip between the seal panel and the upper and lower work rolls is isolated from the outside air by the inert gas guided from the second gas sealing means to the neck portion of the upper and lower work rolls via the side liner. Can be prevented.
[0074]
(2) Furthermore, the side liner provided on the seal panel suppresses leakage of the inert gas from between the barrel portion of the upper and lower work rolls and the seal panel to the outside, so that the consumption of the inert gas can be reduced.
[0075]
(3) Since the upstream seal member and the downstream seal member ensure airtightness between the enclosure and the movable frame, and between the seal panel and the movable frame, the inflow of outside air into the enclosure is prevented. it can.
[0076]
(4) In the rolling mill entry side sealing device according to the second aspect of the present invention, when the outer diameter of the barrel portion of the upper and lower work rolls falls below a predetermined value due to wear, grinding, or the like, the existing side liner is replaced. , It is possible to avoid interference between the side liner and the neck of the upper and lower work rolls.
[0077]
(5) In the rolling mill entrance-side sealing device according to the third aspect of the present invention, a space surrounded by the movable frame, the surrounding housing, the downstream-side sealing member, and the upstream-side sealing member is filled with an inert gas, and the surroundings are filled. The inflow of outside air into the housing can be more effectively prevented.
[0078]
(6) In the rolling mill entrance-side sealing device according to the fourth aspect of the present invention, a cooling fluid is circulated through a passage inside the double-walled structure to cool the seal panel, and to reduce thermal deformation of the seal panel. As a result, the side liner and the neck portion of the upper and lower work rolls do not interfere with each other, and the close contact between the downstream seal member attached to the movable frame and the seal panel can be ensured.
[0079]
(7) In the rolling mill entrance-side sealing device according to claim 5 of the present invention, the movable frame is cooled by circulating a cooling fluid through the passage inside the double wall structure, and the thermal deformation of the movable frame is reduced. As a result, the adhesion between the upstream seal member and the surrounding housing and the adhesion between the downstream seal member and the seal panel can be ensured.
[0080]
(8) In the rolling mill entrance-side sealing device according to claim 6 of the present invention, since the movable frame is urged toward the downstream side in the strip conveying direction by the pressing means, the adhesion between the downstream-side sealing member and the sealing panel is improved. Improvement can be achieved.
[Brief description of the drawings]
FIG. 1 is a central longitudinal sectional view showing an example of an embodiment of a rolling mill entry side sealing device of the present invention.
FIG. 2 is a side longitudinal sectional view showing an example of an embodiment of a rolling mill entry side sealing device of the present invention.
FIG. 3 is a side view showing an example of an embodiment of a rolling mill entry side sealing device of the present invention.
FIG. 4 is a front view of the seal panel related to FIG. 1;
FIG. 5 is a partially cutaway perspective view showing the relative positions of a seal panel, a side liner, and a movable frame related to FIG. 1;
FIG. 6 is a partial plan view showing the relative positions of a seal panel, a side liner, and a work roll related to FIG. 1;
FIG. 7 is a side view showing the side liner related to FIG. 1 and the relative positions of a replacement side liner and a work roll.
FIG. 8 is a conceptual diagram showing an example of a conventional twin-roll caster.
FIG. 9 is a conceptual diagram of a shutter related to FIG. 8;
[Explanation of symbols]
31 Rolling machine 32 Work roll 33 Axle box 35 Work roll 38 Surrounding housing 39 Movable frame 40 Strip 41 Opening 42 Seal panel 45 Barrel part 46 Barrel part 47 Nozzle (first gas sealing means)
48 neck part 49 neck part 50 duct (second gas sealing means)
51 Projecting portion 52 Side liner 53 Side liner 61 Downstream seal member 62 Upstream seal member 64 Cylinder (pressing means)
65 cylinder (pressing means)

Claims (6)

A seal panel having an opening through which the strip can pass and mounted on the axle box of one of the work rolls so as to face the pair of work rolls; and an inert gas provided on the seal panel and directed toward a barrel portion of the work roll. First gas sealing means capable of injecting into a curtain extending in the lateral direction, second gas sealing means provided on the seal panel and capable of injecting an inert gas toward a neck portion of the work roll, and a work roll. A side liner having a protruding portion that enters between the neck portions and guiding the inert gas spouted by the second gas sealing means to the vicinity of the neck portion; a movable frame surrounding the surrounding housing and capable of approaching and separating from the seal panel. A downstream seal member provided on the movable frame so as to be able to contact the entire periphery of the seal panel; and a movable frame so as to be able to contact the outer surface of the surrounding housing. Rolling mill inlet side sealing apparatus characterized in that it comprises an upstream seal member provided. When the outer diameter of the barrel portion of the upper and lower work rolls is equal to or greater than a predetermined value, the side liner has a projecting portion having a shape corresponding to the interval between the upper and lower neck portions, and the outer diameter of the barrel portion of the upper and lower work rolls falls below a predetermined value. 2. A rolling mill entry side seal according to claim 1, further comprising: a replacement side liner having a protruding portion having a shape corresponding to the interval between the upper and lower neck portions when the side liner is detachable from the seal panel. apparatus. The rolling mill entrance side sealing device according to claim 1, wherein a space surrounded by the movable frame, the surrounding housing, the downstream side sealing member, and the upstream side sealing member can be filled with an inert gas. The rolling-machine entrance-side sealing device according to claim 1, wherein a double-walled structure having a passage through which a cooling fluid can flow is formed in the sealing panel. The rolling-machine entrance-side sealing device according to claim 1, wherein a double-walled structure having a passage through which a cooling fluid can flow is formed in the movable frame. The rolling-machine entrance-side sealing device according to claim 1, further comprising pressing means for urging the movable frame toward the downstream side in the strip transport direction.

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