JPH0442108B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method and equipment for winding a thin metal plate manufactured by continuous casting.

(Prior art) The conventional method for manufacturing thin metal sheets by continuous casting is to manufacture slabs in continuous casting equipment, cut them into appropriate lengths to form slabs, and either directly send them to a heating furnace or recycle them after cooling. It was heated, then continuously hot rolled and wound around a coiler.

With the recent development of continuous casting technology, it has become possible to cast thin metal sheets, and a device has appeared that can continuously manufacture thin metal sheets while winding them up.

JP-A-60-87903 discloses an apparatus for continuously casting and winding a thin metal plate. This is shown in FIG.

Slab 22 manufactured by twin roll continuous casting machine 21
is formed in the width direction by a vertical rolling mill 23, then reduced in thickness by a horizontal rolling mill 24, and then rolled into a coiler 25.
It is wound up.

(Problem to be Solved by the Invention) Winding equipment usually uses two machines at once after winding a metal plate being conveyed, in order to wind the next metal plate.
They are installed as a pair to prevent interference with the metal plate.
Installed above or below the conveyor line.

If the metal plate is thick, there is a considerable distance from the conveyance line to reach the winding equipment, and the weight of the metal plate during this time is large, so it is better to bend it downward rather than upward to reach the winding equipment. Since it is structurally simpler to guide and wind up, it is common to provide it at the bottom.

However, installing it below the conveyance line has the problem of high equipment costs.

Furthermore, with the development of continuous casting technology, thin metal sheets of 10 mm or less are being cast, and when conventional winding equipment is used to wind them, defects in the coil shape such as loose winding and telescopic winding occur. Furthermore, since the cast thin metal plate is transported while still at a high temperature, the tip tends to bend and may get under the roller table, so the structure of the transport table also requires improvement.

(Means for Solving the Problems) An object of the present invention is to provide a method and equipment for winding a thin metal plate, which is inexpensive in equipment cost and has a good coil shape after winding. In the first invention of the present invention,
The second invention is characterized in that a thin metal plate cast by continuous casting equipment is wound up in an up-coiled state using a winding equipment consisting of a driven cradle roll and a non-driven reel placed above the cradle roll. A thin metal plate cast by the equipment is connected to the rear end of the lead strip, the tip of the lead strip is attached to the non-driving reel, and the thin metal plate is wound onto the reel in an up-coiled state while applying tension with the cradle roll. It is characterized by In a third aspect of the present invention, a winding equipment for a thin metal sheet cast by continuous casting equipment includes a driving cradle roll and a non-driving reel disposed above the cradle roll after the continuous casting equipment to roll the metal thin sheet. This is characterized by the provision of a winding device that winds up the coil in an up-coiled state.

(Operations and Examples) The present invention will be explained in detail with reference to Examples shown in the drawings.

Fig. 1 shows an embodiment of the present invention, in which a winding equipment and a normal unwinding equipment are interposed between the continuous casting equipment and the rolling equipment, and the continuous casting process and the rolling process are connected. be.

Molten steel adjusted to predetermined composition and temperature is poured into a tandate 6 from a ladle 5, and the molten steel is rapidly cooled by a pair of rolls 7 whose interior is water-cooled to produce a thin metal plate 2, which is a slab. pinch roll 9
This eliminates uneven temperature of the slab by feeding it through the slab. On the outlet side of the heat treatment furnace 8, an up-coiler type winding device 10 having a reel 11 is installed. This winding device consists of a pair of driven cradle rolls (the explanation of the driving mechanism is omitted) and a non-driven reel placed (mounted) on top of the cradle rolls. Guide it to the cradle roll 12 of the device, drive this cradle roll 12 to apply a slight tension,
It can be wound onto a non-driven reel placed above it.

The coil of the wound thin metal sheet 2 is extracted from the winding device 10 and temporarily stored, or is rotated 180° in a horizontal plane and set in the unwinding equipment 13, where it is continuously unwound. Then, it is supplied to the rolling mill 14 and rolled.

The thin metal plate 3 that has been rolled and reduced in thickness is transferred to a heat treatment furnace 1.
The material is heat treated (for example, annealed) in the heat treatment furnace 15 and wound up in a winding equipment 10 installed on the outlet side of the heat treatment furnace 15 .

Before casting the thin metal plate, the leading end of the lead strip is fixed to the reel 11 of the winding equipment 10, the rear end is engaged with the pair of rolls 7, and casting is started.

In this way, the thin metal plate is well connected to the rear end of the lead strip, and the lead strip can be wound while applying tension, so the shape of the wound coil is good, and the tip of the thin metal plate does not slip between the roller tables. This allows for stable operation.

In addition, thin metal sheets are thin, and during winding, the weight of the thin metal sheet from the conveyance table to the winding device is light, so it can be easily bent upwards, and it can be placed above the conveyance line. Since the coiler type can be equipped with a winding device, the equipment cost is also low.

FIG. 2 shows another embodiment of the present invention, showing a process in which continuous casting equipment is directly connected to winding equipment via a rolling mill.

Molten steel adjusted to a predetermined composition and temperature is poured from a ladle 5 into a tundish 6, where it is rapidly cooled while passing through a gap between a pair of rolls 7 whose interior is water-cooled, and then sent to a heat treatment furnace 8 to eliminate temperature unevenness. At the same time, it is heated or cooled to rolling temperature and supplied to the rolling mill 14.

The metal thin plate whose thickness has been reduced by the rolling mill 14 is transferred to the heat treatment furnace 1.
5, and is wound into a winding equipment 10 having a reel 11 in an up-coiled state while being guided by a cradle roll 12.

In this embodiment as well, before starting the casting of the thin metal sheet, the tip of the lead strip was fixed to the reel of the winding device, the rear end of the lead strip was caught in the pair of rolls 7, and then casting was started. Of course, the lead strip may be wound while applying tension.

To fix the lead strip to the reel, it is sufficient to insert the tip of the strip into a slit provided in the reel and wrap the lead strip around the reel two or three times, or other general fixing methods can be used.

Furthermore, if the winding equipment of the present invention and normal unwinding equipment are installed between the rolling mill and the heat treatment equipment on the downstream side, even if the rolling mill stops, work can continue as long as the spare coil is supplied to the unwinding equipment. This improves the operating rate of heat treatment furnaces (for example, continuous annealing furnaces).

(Effects of the Invention) By implementing the present invention, (a) the equipment cost is low because the coil is wound in an up-coiled state using a cradle roll and a non-driven reel;

(b) Since the coil is wound using a non-driving reel and tension is applied by a driving cradle roll, the coil shape after winding is good.

(c) Since the cast metal thin plate is guided by a lead strip, there are no accidents such as crawling under the roller table, and stable operation can be performed.

It has the following effects.

[Brief explanation of drawings]

FIG. 1 shows one embodiment of the present invention, FIG. 2 shows another embodiment of the invention, and FIG. 3 shows a prior art. 1... Molten steel, 2... Metal thin plate, 3... Metal thin plate, 5... Ladle, 6... Tundishtsu, 7...
Roll, 8...Heat treatment furnace, 9...Pinch roll,
10... Winding equipment, 11... Reel, 12... Cradle roll, 13... Unwinding equipment, 14... Rolling mill, 15... Heat treatment furnace.

Claims (1)

[Claims] 1. A method for winding a thin metal sheet cast by continuous casting equipment, which includes guiding the thin metal sheet to a driving cradle roll and winding it in an up-coiled state onto a non-driving reel disposed above the cradle roll. Characteristic method for winding thin metal sheets 2 In a method for winding thin metal sheets cast by continuous casting equipment, before starting casting, a lead strip is placed on top of a cradle roll that drives the tip of a lead strip that pulls the thin metal sheet to be cast. The lead strip is attached to a non-driven roll, and the rear end of the lead strip is connected to the cast metal sheet at the exit of the continuous casting equipment, and at the start of casting, the lead strip is driven while being applied with a slight tension by a driving cradle roll. 1. A method for winding a thin metal sheet, characterized by winding the continuously cast thin metal sheet onto a reel that does not need to be rolled up. 3. A winding device for a thin metal sheet cast by continuous casting equipment, which comprises a cradle roll that is driven after the continuous casting equipment and a non-driven reel placed above the cradle roll, and winds the thin metal sheet in an up-coiled state. A thin metal sheet winding equipment characterized by being provided with. 4. The reel has a gripping mechanism for the tip of the lead strip that guides the cast thin metal plate, and the continuous casting equipment has the lead strip gripping mechanism on the slab outlet side. Winding equipment for the metal sheet described. 5. The winding equipment for a thin metal sheet according to claim 3 or 4, wherein the winding equipment is provided between continuous casting equipment and a rolling mill that rolls the thin metal sheet. 6. The metal sheet winding equipment according to claim 3 or 4, wherein the winding equipment is provided between a rolling mill and a heat treatment equipment.