JP2000126803A - Hot rolling method and facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot rolling method and facility which can deal with the requirement of diversification of a manufacturing facility for rolled stocks, by which the cost of all facility is reduced by using an appropriate manufacturing facility, a roughing rolling machine group is omitted, reverse rolling is unnecessitated, the length of a rolling line is shortened, a thin slab or a sheet is conveyed to finishing rolling machines and formed by rolling in a state where it is held at high temp. by reducing the number of passes and the improvement of yield and the highly accurate rolled stocks are attained. SOLUTION: The thin slab 26 of <=70 mm thick or the sheet of <=10 mm thick is manufactured with a continuous rolling mill 27, it is rolled into a rolled stock 26' having product thickness with one or plural finishing rolling machines 31 while continuously conveying the thin slabs or the sheets of >= two coils and carried in any one of two or more coilers 35 and, after that, the rolled stocks are cut with a shearing machine 33 and alternately distributively coiled with two or more coilers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of rolling a thin slab or a thin plate manufactured by a continuous casting facility by directly transferring the thin slab or the thin plate manufactured by a continuous casting facility to a finishing mill without a rough rolling mill group. The present invention relates to a hot rolling method and equipment.

[0002]

2. Description of the Related Art Conventionally, a rolling facility for rolling a thin slab having a thickness of 70 mm or less or a thin plate having a thickness of 10 mm or less is commonly used as a facility for rolling a so-called medium slab having a thickness of about 150 mm. It consisted of a rough rolling facility for rolling a slab or a thin plate into a rolled material having a thickness of about 20 mm, and a finish rolling facility for rolling to a thickness of about 1 to 2 mm. Various arrangements of rolling mills constituting such rolling equipment have been known.

[0003] For example, FIG. 3 is a schematic view illustrating the arrangement of such conventional rolling equipment. The hot rolling equipment 1 shown in FIG.
And a table roller 3 that conveys the sheet along the rolling line P;
A walking furnace 4 for maintaining and heating the slab 2 at a predetermined temperature
And two rough rolling mills 6 each having a vertical rolling mill 5 arranged on the entry side, and an intermediate coiler 7 for heat retention and rewinding to prevent cooling of the roughly rolled rolled material having a thickness of about 20 mm. And are arranged. Further, on the downstream side of the intermediate coiler 7, five finishing mills 9 having a vertical mill 8 arranged on the entrance side, and two winding machines (down coilers) 11 for winding the rolled material 2 'in a coil shape. And transports the slab 2 to a finishing mill 9
And finish rolling to a product thickness of about 1 to 2 mm, and the rolled material 2 ′ is wound in a coil shape by the down coiler 11 via the pinch roll 10.

Further, Japanese Patent Application Laid-Open No. 63-90303 discloses a "hot rolling equipment" in which a group of rough rolling equipment for medium thickness slabs is omitted. As shown in the schematic diagram of FIG. 4, the hot rolling equipment 15 includes a heating / heating furnace 16, a coil box 17 toward the downstream side of the heating / heating furnace 16, and a crop shear 18.
And a finishing mill group 19 having five finishing rolling mills F1 to F5, and edgers E1, E on the entrance side of F1 and the exit side of F2.
2 and a downcoiler 20 at the most downstream part. In addition, F1 and F2 are reverse rolling mills so that the slab 21 can be reverse-rolled.

[0005] In addition, a sheet thickness press in which a group of rough rolling equipment for medium thickness slabs is omitted has been devised. For example, although not shown, there is Japanese Patent Application Laid-Open No. 2-175011 “Sizing press during running”. According to this thickness press, the upper and lower surfaces of the medium thickness slab in the thickness direction are pressed by a pair of upper and lower inclined dies having inclined surfaces and parallel surfaces connected to the inclined surfaces in the slab transport direction, and instantaneously. It can be reduced to a thickness that can be finish-rolled by a finishing mill.

[0006]

However, the sheet thickness is 70 m.
In order to roll-form a thin slab having a thickness of 10 mm or less or a thin plate having a thickness of 10 mm or less, the conventional rolling equipment for medium-thick slabs shown in FIG. A rough rolling mill and an intermediate coiler for heat retention are required, and the rolling line becomes longer and causes a cost increase. There is a problem that the temperature distribution in the portion becomes uneven and the yield of the rolled material is reduced.

In the conventional hot rolling equipment shown in FIG. 4, the rolling line can be considerably shortened by omitting the rough rolling equipment group, but the surface temperature of the rolled material is reduced during the reverse rolling by the reverse rolling mill. Decreases, making rolling difficult
There were problems such as the necessity of a coil box.

Further, the conventional hot rolling equipment using a thickness press can omit the rough rolling equipment group and increase the thickness reduction, but the thickness press itself is a large-sized structure, which causes an increase in cost. In addition, a looper for retaining the slack of the slab between the plate thickness press and the finish rolling mill is required, and there is a problem that the rolling line cannot be shortened.

The present invention has been made to solve such a problem. That is, the object of the present invention is:
It can meet the demand for diversification of rolled material manufacturing equipment, drastically reduce total equipment cost by using appropriate manufacturing equipment from excessive rolled material manufacturing equipment, omission of rough rolling mill group and no need for reverse rolling And shorten the rolling line,
An object of the present invention is to provide a hot rolling method and a hot rolling method capable of reducing the number of passes and transporting a thin slab or a thin plate to a finishing mill while maintaining the thin slab or the thin plate at a high temperature, thereby improving the yield and producing a highly accurate rolled material.

[0010]

According to the present invention, a thin slab having a thickness of 70 mm or less or a thickness of 10
mm or less, and while continuously transporting two or more coils of thin slabs or thin plates, rolling them to a rolled material of product thickness with multiple or one finishing mill, and winding two or more Hot rolling method, wherein the rolled material is cut into a predetermined length by a shearing machine, and is alternately distributed and wound by two or more winding machines. Provided. According to the method of the present invention described above, a thin slab having a thickness of 70 mm or less or a thin plate having a thickness of 10 mm or less is manufactured by a continuous casting machine, and the thin slab or the thin plate having a thickness of two or more coils is continuously conveyed. Rolled into rolled material of product thickness by multiple or one finishing rolling mill, transported to one of two or more winders, and then cut the rolled material to a predetermined length with a shearing machine 2. Winding by alternately sorting by two or more winders.

Further according to a preferred embodiment of the present invention,
After producing a thin plate by a continuous casting machine, the thin slab or the thin plate is transported while being kept at a predetermined thickness by a pressing roll, and then is transported on a rolling line, and the thin slab or the thin plate is heated to a predetermined temperature in a soaking furnace. After rolling by a finishing mill, the rolled material is conveyed to the downstream side by pinch rolls, and then the rolled material is carried into the winding machine in a state where the leading end of the rolled material is floated by the thin plate passing device.

Therefore, a thin slab continuously manufactured with a thickness of 70 mm or less by a continuous casting machine is reduced to a thickness of about 50 mm by a plurality of press rolls while being carried into a soaking furnace, and then reduced. In a short period of time, the rough rolling mill group is omitted (that is, the rolling line is shortened) in a state where the temperature is soaked at a predetermined temperature in the soaking furnace, and a plurality of (five in the present invention) finishing rolling mills are formed. Conveyed directly and continuously. If the thickness of the slab just before the entry side of the finishing mill group is about 50 mm, it is maintained in a high temperature state, so that even if the rough rolling mill group is omitted, no reverse rolling is required, and the final finishing rolling is performed. Product thickness (e.g., 1-2 mm) can be obtained on the exit side of the machine. As described above, the rolling line can be shortened, the number of passes can be reduced, and the temperature can be reduced, so that a good rolled material can be obtained.

On the other hand, a thin plate continuously manufactured with a plate thickness of 10 mm or less by a continuous casting machine is also directly and continuously conveyed to one finishing mill while being soaked at a predetermined temperature in a soaking furnace. Then, the rolling mill group can be omitted, and the rolling can be performed without the need for the reverse rolling, and the product thickness can be obtained at the exit side of the finishing mill. As a result, equipment costs can be significantly reduced. Furthermore,
In the state where the leading end of the rolled material is floated by the thin plate passing device, 2
Since the rolled material is carried into one of the winders or more, the leading end of the rolled material is smoothly carried into the winder, and the trouble of loading the rolled material at the winding machine entrance side can be prevented beforehand. Improve wood productivity.

According to a preferred embodiment of the present invention, the thin slab or the thin plate is cut into a predetermined length which can be wound as a rolled material for several coils by a shearing machine arranged on the output side of the continuous casting machine. Rolling is performed continuously, cut before the winding machine, and alternately distributed and wound by two or more winding machines. According to this method, the thickness schedule can be freely changed in the middle of continuous rolling.

Further, the thin slab or the thin plate is cut into a predetermined length which can be wound as a rolled material for one coil by a shearing machine arranged on the output side of the continuous casting machine, so that one coil can be batch-rolled. According to this method, batch rolling of one coil can be performed without requiring reverse rolling, and diversification of rolled material manufacturing equipment and energy saving can be achieved.

Further, according to the present invention, a continuous casting machine for producing a thin slab having a plate thickness of 70 mm or less or a thin plate having a plate thickness of 10 mm or less, and a thin slab or a thin plate which is arranged on the output side of the continuous casting machine and is conveyed. And a plurality of press rolls that can be pressed, and a soaking furnace that heats a thin slab or a thin plate to a predetermined temperature while being transported on a rolling line arranged downstream of the press roll,
From one or more finishing rolling mills that rolls into a rolled product of product thickness while batch or continuously transporting thin slabs or sheets of one or more coils from a soaking furnace, and from a finishing mill A pinch roll for transporting the rolled material downstream,
Hot rolling characterized by comprising a shearing machine arranged on the exit side of a pinch roll and cutting a rolled material to a predetermined length, and two or more winders for winding the cut rolled material. Facilities are provided.

According to the structure of the present invention, a thin slab continuously manufactured with a plate thickness of 70 mm or less by a continuous casting machine is processed by a plurality of pressing rolls into a plate having a thickness of about 50 mm while being carried into a soaking furnace. Can be reduced in thickness. In addition, a thin slab for one coil or two or more coils in a soaked state at a predetermined temperature in a soaking furnace is shortened in a short time, and the rough rolling mill group is omitted (that is, the rolling line is shortened). It can be directly and continuously transferred to one finishing mill. Furthermore, since the slab thickness immediately before the entry side of the finishing mill group was set to about 50 mm, it could be maintained at a high temperature, so that the rough rolling mill group was omitted, and no reverse rolling was required at the exit side of the final finishing mill. A product thickness (eg, 1-2 mm) can be obtained. In this way, the rolling line can be shortened,
In addition, since the number of passes can be reduced and the temperature can be reduced, a good rolled material can be obtained. Further, since the pinch roll is provided on the downstream side of the finishing mill, the rolled material can be reliably transported to the downstream side.

On the other hand, a thin plate continuously manufactured with a thickness of 10 mm or less by a continuous casting machine can be reduced to a predetermined thickness by a plurality of pressing rolls while being carried into a soaking furnace. If no reduction is necessary, the thin plate is transported by a pressing roll. In addition, the thin plate is omitted from the rough rolling mill group in a state where it is soaked to a predetermined temperature in the soaking furnace, and is directly conveyed directly to one finishing mill without the need for reverse rolling to perform roll forming. The product thickness is obtained at the exit side of the finishing mill. As a result, equipment costs can be significantly reduced.

[0019] According to a preferred embodiment of the present invention, the thin strip passing between each of the finish rolling mills and each of the winders and conveyed to each of the winders with the leading end of the rolled material floated. Equipment. With this configuration, the leading end of the rolled material is carried into one of the two or more winding machines in a state where the leading end of the rolled material is floated by the thin plate passing device, so that the leading end of the rolled material is smoothly carried into the winding machine. In addition, it is possible to prevent the trouble of loading the rolled material on the entrance side of the winding machine, thereby improving the productivity of the rolled material.

Further, a shearing machine is provided on the output side of the continuous casting machine and cuts a thin slab or a thin plate into a predetermined length which can be wound as a rolled material of one coil. With this configuration, batch rolling of one coil can be performed without requiring reverse rolling, and diversification of rolled material manufacturing equipment and energy saving can be achieved.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings, common parts are denoted by the same reference numerals, and redundant description is omitted.

FIG. 1 shows a first example of the hot rolling equipment according to the present invention.
1 is an overall configuration diagram showing an embodiment. In this figure, the hot rolling equipment 25 of the present invention includes a continuous casting machine 27 (for example, a cooled copper plate is placed under a tundish) for producing a plate thickness of 70 mm or less, a so-called thin slab 26, and a continuous casting machine 27. It comprises a plurality (three pairs in this figure) of pressing rolls 28 which are arranged on the delivery side and are conveyed to the downstream side while sequentially reducing and reducing a thin slab 26 cast with a thickness of 70 mm to a predetermined thickness. ing. In this figure, the final (third)
The thin slab 26 pressed from the pressing roll 28 is transported downstream with a plate thickness of about 50 mm. Further, the hot rolling equipment 25 is disposed downstream of the pressing roll 28 and is configured to heat the thin slab 26 to a predetermined temperature while being transported on the rolling line P; Line P
A table roller 30 composed of a plurality of drive rolls conveyed along the top and a thin slab 26 having a thickness of about 50 mm conveyed while being soaked at a predetermined temperature from a soaking furnace 29 are continuously thinned (for example, Rolled material 26 having a product thickness of 1 to 2 mm)
And a plurality of (five in this figure) finishing mills 31 are arranged. As described above, even if the thin slab 26 for one coil or two or more coils is directly conveyed to the finishing mill group 31 without the rough rolling mill group, the slab plate immediately before the entrance of the first finishing mill 31 can be obtained. Since the thickness is maintained at a high temperature of about 50 mm, the product can be roll-formed to the product thickness at the exit side of the final finishing rolling mill without requiring reverse rolling. As described above, since the rough rolling mill group is omitted, the rolling line can be shortened and the equipment cost can be reduced. Further, since the rough rolling mill group and reverse rolling are not required, the number of passes can be greatly reduced, and the temperature drop can be reduced. Therefore, a rolled material having a good shape can be obtained.

Further, the hot rolling equipment 25 includes a finishing mill 3
Pinch roll 3 for transporting rolled material 26 'from 1 to the downstream side
2 and a rolled material 26 ′ arranged on the exit side of the pinch roll 32.
A shearing machine (high-speed shear) 33 for cutting a piece into a predetermined length,
Two or more winding machines (down coilers) 3 which convey the cut rolled material 26 ′ with a pinch roll 34 and wind it into a coil shape 3
5 is provided. Since the pinch roll 32 is provided on the downstream side of the finish rolling mill 31, the rolled material 26 'can be reliably transported to the downstream side.

In FIG. 1, hot rolling equipment 25
Is provided between the finishing mill 31 and each of the winders 35, and has a thin plate passing device 37 which carries the rolled material 26 'into the respective winders 35 in a state where the leading end of the rolled material 26' floats ( (Two in this figure). With this configuration, the leading end of the rolled material 26 'is carried into one of the two or more winders 35 in a state of being floated by the thin plate passing device 37, so that the rolled material 2
The leading end of 6 'is carried into the winding machine, and the trouble of introducing the rolled material on the entrance side of the winding machine 35 is prevented beforehand, so that the productivity of the rolled material is improved.

Further, in FIG.
Is provided with a shearing machine (shear) 38 which is arranged on the exit side of the continuous casting machine 27 and cuts to a predetermined length. Thereby, the thin slab 26 is cut into a predetermined length that can be wound as a rolled material 26 ′ for several coils, continuously rolled, cut by a shearing machine (high-speed shear) 33 in front of a winder 35, and The winding can be performed by alternately distributing and winding by the winding machines 35 or more. Therefore, the sheet thickness schedule can be freely changed during continuous rolling.

In FIG. 1, hot rolling equipment 25
Is placed on the exit side of the continuous casting machine 27 and the thin slab 26 is
A shearing machine (shear) 38 for cutting into a predetermined length that can be wound as a rolled material 26 ′ of a coil is provided. With this configuration, it is possible to perform batch rolling of one coil at a time without the need for reverse rolling, to meet the demand for diversification of rolled material manufacturing equipment, and to further save energy.

Next, the hot rolling method of the present invention will be described with reference to FIG. The method of the present invention comprises the following steps. First, a thin slab 26 having a thickness of 70 mm or less is manufactured by a continuous casting machine 27. Next, the thin slab 26 is moved about 50 m by three pressing rolls 28.
It is conveyed while reducing the thickness to m. Next, the thin slab 26 is soaked at a predetermined temperature in the soaking furnace 29 while being transported on the rolling line P. Next, a plurality of (five) finishing mills 3 are continuously transported from the soaking furnace 29 to the thin slab 26 of at least two coils.
In step 1, the product is rolled to a rolled material 26 'having a product thickness. Next, the rolled material 26 ′ is transported downstream by the pinch roll 32. Next, the rolled material 26 ′ is carried into one of the two or more winders 35 while being floated by the thin plate passing device 37. Thereafter, the rolled material 26 ′ is cut into a predetermined length by the shearing machine 33. The rolled material 26 ′ conveyed from the pinch roll 34 is alternately distributed and wound by two or more winders 35. Therefore, a thin slab continuously manufactured with a sheet thickness of 70 mm or less by a continuous casting machine is reduced to a sheet thickness of about 50 mm by a plurality of pressing rolls while being carried into a soaking furnace, and then is subjected to soaking. In a state of being uniformly heated to a predetermined temperature in a furnace, it is directly and continuously conveyed to five finishing mills in a short time and without a rough rolling mill group (that is, shortening the rolling line). If the thickness of the slab just before the entry side of the finishing mill group is about 50 mm, it is maintained in a high temperature state, so that even if the rough rolling mill group is omitted, no reverse rolling is required, and the final finishing rolling is performed. A product thickness of 1-2 mm can be obtained on the exit side of the machine. As described above, the rolling line can be shortened, the number of passes can be reduced, and the temperature can be reduced, so that a good rolled material can be obtained.

FIG. 2 shows a second example of the hot rolling equipment according to the present invention.
1 is an overall configuration diagram showing an embodiment. In this figure, the hot rolling equipment 40 of the present invention includes a continuous casting machine (for example, a twin roll type equipped with two cooling rolls) 27 for producing a plate thickness of 10 mm or less, a so-called thin plate 41, and a continuous casting machine 27. It comprises a plurality (three pairs in this figure) of pressing rolls 28 which are arranged on the delivery side and are conveyed to the downstream side while sequentially reducing and pressing a thin plate 41 cast with a thickness of 10 mm to a predetermined thickness. I have. If necessary, the final (third) in this figure
The thin plate 41 pressed from the pressing roll 28 has a thickness of about 1
It may be conveyed downstream by 0 mm or less. Further, the hot rolling equipment 40 is provided on the downstream side of the pressing roll 28 and is configured to soak the thin plate 41 to a predetermined temperature while being transported on the rolling line P, and the rolling line P on which the thin plate 41 is placed. A table roller 30 composed of a plurality of drive rolls conveyed along the top, and a thin plate 26 having a thickness of about 10 mm conveyed in a state where it is soaked at a predetermined temperature from a soaking furnace 29, for example, continuously have a A finishing mill 42 having a rolled material 41 ′ having a thickness of 1 to 2 mm is arranged. In this way, the rough rolling mill group is omitted, and one coil or 2
Even if a thin plate 41 equal to or more than the coil is conveyed,
Since it is maintained at a high temperature immediately before the entry side, the product can be roll-formed to the product thickness at the exit side of one finishing mill 42 without requiring reverse rolling. As described above, since the rough rolling mill group is omitted, the rolling line can be shortened and the equipment cost can be reduced. Further, since the rough rolling mill group and reverse rolling are not required, the number of passes can be greatly reduced, and the temperature drop can be reduced. Therefore, a rolled material having a good shape can be obtained.

In the method of rolling a thin plate according to the present invention, as shown in FIG. 2, while the thin slab of the first embodiment is roll-formed with five finishing mills, one finishing mill is used. Roll forming. Accordingly, the product can be directly and continuously conveyed to one finishing mill, and the product thickness can be obtained at the exit side of the finishing mill without the need for the rough rolling mills and without requiring reverse rolling. As a result, equipment costs can be significantly reduced.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the present invention.

[0031]

As described above, according to the hot rolling method and equipment of the present invention, it is possible to meet the demand for diversification of rolled material production equipment, and to use appropriate production equipment from excessive rolled material production equipment. It is possible to greatly reduce the total equipment cost, eliminate the need for the rough rolling mill group and eliminate the need for reverse rolling, shorten the rolling line, reduce the number of passes, and keep the thin slab or sheet at a high temperature. Since it can be conveyed to a finish rolling mill, it has excellent effects such as improvement in yield and high-precision rolled material.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing a first embodiment of a hot rolling facility according to the present invention.

FIG. 2 is an overall configuration diagram showing a second embodiment of the hot rolling equipment according to the present invention.

FIG. 3 is a schematic view illustrating an arrangement of a conventional rolling facility.

FIG. 4 is a schematic view illustrating an arrangement of another conventional rolling equipment.

[Explanation of symbols]

 1, 15, 25, 40 Hot rolling equipment 2, 21 Slab 2 ', 26', 41 'Rolled material 3, 30 Table roller 4 Walking furnace 5, 8 Vertical rolling mill 6 Rough rolling mill 7 Intermediate coiler 9, 31 , 42 Finish rolling mill 10, 32, 34 Pinch roll 11, 35 Winding machine (down coiler) 16 Heating furnace 17 Coil box 18 Crop shear 19 Finish rolling mill group 20 Down coiler 26 Thin slab 27 Continuous casting machine 28 Press roll 29 Average Heat furnace 33 Shearing machine (high-speed shear) 37 Thin plate passing device 38 Shearing machine (shear) 41 Thin plate P Rolling line F1-F5 Finishing mill E1, E2 Edger

Claims (7)

[Claims] 1. A continuous casting machine is used to produce a thin slab having a thickness of 70 mm or less or a thin plate having a thickness of 10 mm or less, and a plurality of or one thin slab or two or more thin slabs are continuously conveyed. Rolled into a rolled product of product thickness by a finishing rolling machine, and carried into one of two or more winding machines. Thereafter, the rolled material is cut into a predetermined length by a shearing machine, and two or more rolled materials are cut. A hot rolling method characterized by alternately winding and winding with a winder. 2. After the production of a thin plate by a continuous casting machine, the thin slab or the thin plate is transported while being kept at a predetermined thickness by a pressing roll, and then transported on a rolling line, and the thin slab or the thin plate is transported to a predetermined temperature in a soaking furnace. After being rolled by a finishing mill, the rolled material is transported downstream by pinch rolls, and then the rolled material is transported to the winder in a state where the leading end of the rolled material is floated by a thin plate passing device. The hot rolling method according to claim 1, wherein the hot rolling is performed. 3. A winding machine in which a thin slab or a thin plate is cut into a predetermined length which can be wound as a rolled material for several coils by a shearing machine arranged on an output side of the continuous casting machine, and continuously rolled. The hot rolling method according to claim 1, wherein the hot rolling is performed by cutting beforehand, and alternately winding by two or more winders. 4. A method in which a thin slab or a thin plate is cut into a predetermined length that can be wound as a rolled material for one coil by a shearing machine arranged on an output side of a continuous casting machine, so that one coil can be batch-rolled. The hot rolling method according to claim 1, wherein: 5. A continuous casting machine for producing a thin slab having a thickness of 70 mm or less or a thin plate having a thickness of 10 mm or less, and a plurality of thin slabs disposed on the output side of the continuous casting machine and capable of conveying and pressing the thin slab or the thin plate. A pressing roll, a soaking furnace for disposing a thin slab or a thin plate at a predetermined temperature while being transported on a rolling line, which is arranged downstream of the pressing roll, and a thin film for one coil or two or more coils from the soaking furnace. A plurality or one finishing mill for rolling a slab or a thin plate into a rolled material having a product thickness while continuously or continuously transporting the slab or the thin plate, a pinch roll for transporting the rolled material from the finish rolling mill to a downstream side, and a pinch roll. 1. A hot rolling facility, comprising: a shearing machine disposed on the outlet side of the above for cutting a rolled material into a predetermined length; and two or more winders for winding the cut rolled material. 6. A thin plate passing device which is disposed between the finishing mill and each of the winders and is carried into each of the winders in a state where the leading end of the rolled material is floated. The hot rolling equipment according to claim 5, wherein 7. A shearing machine disposed on an output side of the continuous casting machine and cutting a thin slab or a thin plate into a predetermined length that can be wound as a rolled material of one coil.
The hot rolling equipment according to 1.