JPS61176406A - Method and installation for continuous casting and rolling - Google Patents

Abstract

PURPOSE:To perform the continuous operation of casting and rolling of a metal lic sheet, having width dimensions of wide range, by changing the sheet width by combining the width change of a pouring nozzle of molten metal in continu ous casting machine and the width change of a width regulating means, etc. in rolling device. CONSTITUTION:A cast metallic slab, discharged continuously from a continuous casting machine 1 is rolled by respective rolling rolls 22 while regulating its width by vertical rolls 19 or cylindrical vertical rolls 23, and a metallic sheet of prescribed sheet width is obtained. The width of cast slab is spreaded by extending the distance between mold caterpillars 5 at both sides by actuating hydraulic cylinders 11 of both sides as well as exchanging tundishes 9. As a molten-metal pouring nozzle 10 and the tundish 9 are formed in one body, the change of nozzle width is performed by exchanging the tundishes 9, and a tundish exchanging device consisting of hydraulic cylinders 14, 15 corresponds to a nozzle exchanging device.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention utilizes a continuous casting machine and rolling equipment installed in series on the exit side of the continuous casting machine to perform everything from casting to rolling in one continuous line. The present invention relates to a continuous casting and rolling method for manufacturing metal plates, and an apparatus therefor.

[Prior art]

Conventionally, when rolling a metal plate from a cast product obtained by continuous casting, a continuous casting machine casts a slab of a certain width,
This slab was rolled using rolling equipment in the downstream process to obtain metal plates of various dimensions and widths.

[Problem that the invention seeks to solve]

When obtaining a rolled product of a metal plate from a continuous casting product, it is considered efficient to make the continuous casting process and the rolling process continuous and perform it as a continuous line. However, if the conventional method were simply transferred to an integrated line, metal plates of all desired width dimensions would be rolled from a slab of a certain width using rolling equipment, but all of a wide range of metal plates would be rolled using rolling equipment alone. It is very difficult to adapt to the width dimension because it is a heavy burden.

This breakthrough was made against the above background, and the purpose was to obtain a continuous casting and rolling method and a continuous casting and rolling apparatus that can consistently perform continuous casting and rolling of metal plates with a wide range of width dimensions. shall be.

[Means for solving problems]

The seventh invention is characterized in that a rolling device is installed in series on the outlet side of a continuous casting machine to continuously cast and roll a metal plate, and the width of the plate is changed by changing the nozzle width of a molten metal injection nozzle of the continuous casting machine. This is a continuous casting and rolling method that performs a combination of the change and the width change of the width regulating means provided on the left and right sides of the rolling apparatus.

The third invention is a device for carrying out the above method, including a nozzle changing device for replacing the molten metal injection nozzle with a molten metal injection nozzle having a desired nozzle width, and a nozzle changing device that can be positioned on the left and right sides of the rolling device in the sheet width direction. This is a continuous casting and rolling equipment equipped with vertical rolls for regulating sheet width.

[Effect]

A cast metal plate of a certain width that is continuously drawn out from a continuous casting machine is rolled by a rolling mill and becomes wider, but it is not easy to roll left or right! The width is regulated by a width regulating means such as a vertical roll provided in ILK, and a metal plate having a desired width can be obtained. The range in which the width is increased using the rolling machine is a small range, and if you want to obtain a sheet wider than that small range, change the nozzle width of the molten metal injection nozzle, cast a wider metal plate, and then use the rolling machine to widen the width. to reduce the amount of width expansion. In this way, metal plates having a wide range of width dimensions can be continuously cast and rolled.

〔Example〕

An embodiment of the present invention will be described based on FIG. 1, which is a plan view of a continuous casting and rolling apparatus, and FIG. 2, which is a side view of the same.

1 is a continuous casting machine, 2 is a rolling device, and the rolling device 2 is provided in series on the outlet side of the continuous casting machine 1.

The continuous casting machine 1 is of an endless track type, and has seven pairs of upper and lower mold caterpillars 4 for regulating plate thickness, which are formed by connecting a large number of mold blocks 3 in a loop shape, and a large number of mold blocks 5 connected in a loop shape. ], seven pairs of left and right mold caterpillars 6 for regulating plate width are sandwiched between the upper and lower mold caterpillars 4.
The upper and lower mold caterpillars 4 and the left and right mold caterpillars 6 are driven by drive devices 7 and 8, respectively, as shown by the arrow (A).
or (b) direction, the mold caterpillars 4 and 6
A molten metal injection nozzle 10 connected to a tongue pusher 9 is inserted into the inlet side of the tank.

The mold caterpillar 6 for determining the sheet width is connected to hydraulic cylinders IIK provided on the left and right, and is moved in the left and right direction (arrow (c)) K by this hydraulic cylinder 11 to adjust the spacing according to the sheet width of the metal sheet to be cast. is set to

Further, a switching tundish 13 in which molten metal injection nozzles 12 having different nozzle widths are integrally connected is provided on the side of the tundish 9.
3 is connected to a hydraulic cylinder 14 for replacing the tundish, which operates in the left-right direction (in the direction of the arrow). In addition, on the entrance side of the mold caterpillar 4.6, there is a hydraulic cylinder 15 for installing a tundish that moves the tundish 9 back and forth.
is provided.

A pinch roll 16 is provided on the exit side of the continuous casting machine 1,
A crop shear 17 and a scrap receiver 18 for shearing the leading and trailing ends of the board are provided in front of it.

A rolling device 2 installed in series with the continuous casting machine 1 includes, in order from the continuous casting machine 1 side, a drum-shaped vertical roll 19, a work roll 20, and a backup roll 21.
2. It has a structure in which a cylindrical vertical roll 23 is arranged between the stands of the rolling rolls 22, and the rolled metal plate is wound onto a recoiler 25 via a pinch roll 24 on the output side. The drum-shaped vertical roll 19 and the cylindrical vertical roll 23 both constitute width regulating means and are movable in the board width direction.

Continuous casting machine 1 of continuous casting and rolling equipment configured as above
At 1C, the molten metal injected from the nozzle IO is cooled from the part of the mold caterpillar 4.6 that contacts the mold surface, forming a solidified shell, and is sent out by the mold caterpillars 4, 6 to form a continuous metal. The casting of the plate is carried out.

Here, the width of the metal plate to be left is determined by the left and right mold caterpillars 6, and the molten metal injection nozzle 10 used is one that matches the spacing between the left and right mold caterpillars 6.

The cast metal plate that is continuously combed out from the continuous casting machine 1 is
Although rolled by each rolling roll 22, the drum-shaped vertical roll 19
Alternatively, the width is regulated by the cylindrical vertical roll 23, and a metal plate with a desired width can be obtained. The width of the plate to be rolled is adjusted by adjusting the distance between the left and right sides of the vertical rolls 19.23.

Here, the sheet width obtained by rolling [2] is narrower than the sheet width of the @formed metal sheet coming out of the continuous casting machine 1 plus 300w,
If the width is 300 m or more, the casting width of the continuous casting machine 1 is increased. To widen the casting width, use the left and right hydraulic cylinders 1.
1 to widen the interval between the left and right mold caterpillars 5, and replace the tandish 9. To replace the tundish 9, pull out the tundish 9 using the hydraulic cylinder 15, lift the tundish 9 with a crane or the like, and move it to another location. 13 is pushed out by the side hydraulic cylinders 14 to move it to the center, and then pushed forward by the hydraulic cylinder 15, and the molten metal injection nozzle 12 is inserted between the mold caterpillars 4.6. As described above, the width is changed by 3θOttm or more.

In the embodiment, since the molten metal injection nozzle and the tundish are integrated, the nozzle width can be changed by replacing the tundish. Corresponds to a replacement device.

Note that if the structure allows only the molten metal injection nozzle to be replaced, there is no need to replace the tundish itself.

Moreover, although the continuous casting machine 1 of the embodiment is of an endless track type, the continuous casting machine 1 is not necessarily limited to this and may be of a general type in which the mold does not move.

〔effect〕

According to the present invention described above, a continuous casting machine and a rolling device are installed in series, and changing the width of one plate is achieved by changing the nozzle width of the molten metal injection nozzle of the continuous casting machine and regulating the width of vertical rolls, etc. in the rolling device. Since this is carried out in combination with changing the width of the means, it has become possible to continuously cast and roll metal plates having a wide range of widths without placing an excessive burden on the rolling equipment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway plan view of a continuous casting and rolling apparatus showing an embodiment of the present invention, and FIG. 2 is a side view of the same. 1... Continuous casting machine, 2... Rolling device,
9.13... Tanditshu, 10.12...
...Molten metal injection nozzle, 11, 14.15...
・Hydraulic cylinder, 19°23... Vertical roll, 2
2...ff-g o-le.

Claims (2)

[Claims] (1) A continuous casting and rolling method in which a metal plate continuously cast by a continuous casting machine is continuously rolled by a rolling device installed in series on the outlet side of the continuous casting machine, and the continuous casting A continuous casting and rolling method characterized in that the process is carried out by a combination of changing the nozzle width of a molten metal injection nozzle of a machine and changing the width of width regulating means provided on the left and right sides of a rolling device. (2) A continuous casting machine that continuously casts metal plates, and a rolling device that is installed in series on the outlet side of this continuous casting machine and continuously rolls the metal plates that are drawn out from the continuous casting machine.
A continuous casting and rolling machine that continuously casts and rolls metal sheets, and includes a nozzle changing device that replaces the molten metal injection nozzle of the continuous casting machine with a molten metal injection nozzle having a desired nozzle width, and 1. A continuous casting and rolling apparatus comprising: a vertical roll for regulating the width of the sheet, the position of which is adjustable in the width direction of the sheet;