JPH067896A - Cast slab guiding equipment of twin roll type continuous casting equipment - Google Patents

Abstract

PURPOSE:To easily set a dummy chute on a cooling roll and to greatly reduce the working time in a twin roll type continuous casting equipment. CONSTITUTION:A dummy chute 10 where a coupling 1 is mounted at the rear end is held by a pair of cooling rolls 51, and the forward end is projected into a molten pool part 53 on the cooling rolls. The strip-shaped cast slab melted on the tip part of the dummy chute is guided by the coupling and the dummy chute and lowered, bent by a guide chute 7, and supplied to a carrying roller 55. The coupling traveling on the carrying roller is connected to a sled 11 where the hook on the tip is waiting, and this sled travels on the carrying roller and to guide the cast slab.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin drum type continuous casting facility for leading a strip-shaped slab at the start of casting to a winding machine.

[0002]

2. Description of the Related Art FIG. 5 is a side view showing the concept of a conventional slab leading device. As shown in FIG. 5, in the conventional slab leading device, a long dummy sheet 60 is placed on a conveying roller 55 and a tangential roll 57 and a pinch roll 56 are placed.
This is clamped by the bobbin 58
Are connected with bolts 59.

Then, the dummy sheet 60 is sandwiched by both cooling drums 51 so that the leading end of the dummy sheet 60 projects into the molten metal pool 53 consisting of the pair of cooling drums 51 and the side dams 52, and the strip-shaped cast pieces are continuously formed. Prepare for casting.

Next, when the molten metal is continuously supplied to the molten metal pool portion 53 and the cooling drum 51, the pinch roll 56 and the winding bobbin 58 are rotated, the molten drum is cooled and solidified, and the leading end portion of the dummy sheet 60. The strip-shaped cast slab 40 welded to is led by the dummy sheet 60 and supplied to the winding bobbin 58. The winding bobbin 58 winds the strip-shaped cast piece together with the dummy sheet 60.

[0005]

Since the cooling drum 51 and the winding bobbin 58 are arranged apart from each other, the conventional cast slab leading device requires a very long dummy sheet 60. Therefore, a great amount of labor is required for setting the dummy sheet 60 on the tangential roll 57, the transport roller 55, the pinch roll 56, and the winding bobbin 58, and for the work of sandwiching the leading end of the dummy sheet 60 between the cooling drums 51. It was necessary, inefficient, and required a long time.

It is an object of the present invention to provide a cast slab leading device which does not have the above-mentioned drawbacks found in the conventional device and which can be easily set and can significantly reduce the working time.

[0007]

According to the present invention, a dummy sheet having a tip portion protruding from a pool of water between cooling drums and a rear end portion suspended below the cooling drum, and a dummy sheet mounted on the lower end of the dummy sheet are provided. It is possible to run on a horizontal coupling roller, and a coupling chute that is arranged below the coupling, a guide chute that changes the progress of the dummy sheet and the strip-shaped slab in the horizontal direction. A slab leading device is constituted by a thread which is arranged in the above and is attached to the coupling.

Further, in the present invention, as the dummy sheet, a long sheet whose front end projects into the molten metal pool and whose rear end is sandwiched by pinch rolls for horizontally feeding strip-shaped slabs is used. A casting attached to the rear end of the dummy sheet and a thread attached to and detached from the coupling are provided to form a slab leading device.

[0009]

According to the present invention, at the start of continuous casting of strip-shaped slabs, a coupling is attached to the rear end portion of the dummy sheet, and the dummy sheet is provided on both cooling drums so that the front end portion thereof protrudes into the molten metal pool. The dummy sheet and the coupling are suspended below the cooling drum.

Next, the molten metal is continuously supplied to the molten metal pool formed by the pair of cooling drums, and the cooling drum is rotated while being cooled by the cooling drum to solidify into strip-shaped cast pieces,
The coupling, the dummy sheet, and the strip-shaped slab welded to the tip of this dummy sheet are lowered, and the progress thereof is changed in the horizontal direction by the guide chute. Then, the coupling is quickly connected to the thread waiting on the conveying roller and is fed to the next step.

The slab according to the present invention uses a long dummy sheet whose front end projects into the basin, but whose rear end is sandwiched by pinch rolls that feed horizontally. When using the leading device, at the start of continuous casting of strip-shaped slabs, the dummy sheet is pinched by both cooling drums so that the tip portion projects into the molten metal pool portion, and the trailing edge portion is placed on the transport roller. Fit the coupling. Then, the dummy sheet is pinched by the pinch rolls, and the sled waiting on the transport roller is moved to be coupled to the coupling.

Next, the molten metal is continuously supplied to the pool,
The cooling drum is rotated while being cooled by the cooling drum to be solidified into a strip-shaped slab, and the dummy sheet, the coupling and the thread are fed to the next step by the pinch roll. As described above, the coupling and the thread can be quickly attached and detached, and the slab leading can be completed with a little labor and time.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus according to the present invention will be specifically described below based on the illustrated embodiments. The same members as those of the conventional apparatus described with reference to FIG. 5 are designated by the same reference numerals, and duplicated description will be omitted.

FIG. 1 is a side view showing the concept of a slab leading apparatus according to a first embodiment of the present invention in a set state, and FIG. 2 is a side view showing the concept in a state in which continuous casting of strip-shaped slabs is started, Figure 3
FIG. 3 is a side view showing an enlarged main part of FIG.

In FIGS. 1 to 3, reference numeral 1 denotes a coupling, and the coupling 1 is adapted to rotate upward with respect to the connector 2, the flat head screw 3 screwed to the connector 2, and the connector 2. And a hook 4 pivotally attached to the.

Reference numeral 11 is a sled, and the latch 12 is pivotally attached to the leading end of the sled so as to rotate by its own weight, and is placed on the conveying roller 55. A guide chute 7 is arranged below the cooling drum 51. 8 is a guide roll. Reference numeral 20 is a rotary drum type running shear, and 30 is a winder.

Next, the operation of the apparatus according to this embodiment will be described. As shown in FIG. 1, the dummy sheet 10 having the coupling 1 mounted at the rear end is sandwiched by both cooling drums 51, and the front end thereof is projected into the molten metal pool 53 to prepare for starting continuous casting.

Next, when the molten metal is continuously supplied to the molten metal pool 53 and the cooling drum 51 is rotated, the molten metal is cooled and solidified by the cooling drum 51 as shown in FIG. The strip-shaped slab 40 that has been welded to is guided and lowered by the coupling 1 and the dummy sheet 10, and is guided by the guide chute 7 to the tangential roll 5
It is fed from 7 to the transport roller 55. At this time, the connector 2 and the hook 4 of the coupling 1 shown in FIG. 3 are bent along the curved surface of the guide chute 7.

Next, the coupling 1 which advances on the conveying roller 55 passes through the pinch roll 56 and the guide roll 8, and its hook 4 comes into contact with the tip end portion of the thread 11 waiting and pushes the latch 12. Latch 1 when raised and passed
2 descends by its own weight and engages with the hook 4, and the coupling 1 and the thread 11 are connected.

The thread 11 is advanced on the transport roller 55, and the running shear 20 cuts the cut portion 42 of the strip-shaped cast piece 40 from the plate thickness increasing portion 41 having a predetermined thickness. Then, the thread 11, the coupling 1, the dummy sheet 10 and the cut sheet thickness increasing portion 41 are passed over the conveying roller 55 on the right side of the winder 30 in the drawing, and fed by the pinch roll 56 and the conveying roller 55. Strip-shaped slab 4
0 is wound into a coil by the winder 30.

In this embodiment, the hook 4 of the coupling 1 is used.
Since the latch 12 of the sled 11 and the sled 11 can be easily engaged with each other with a simple structure, the dummy sheet 10 that advances
Can be quickly connected to the waiting thread 11.

FIG. 4 is a side view showing the concept of a state in which the cast slab leading apparatus according to the second embodiment of the present invention is set. In the second embodiment, the dummy sheet 15 is lengthened so that its rear end reaches the end of the pinch roll 56, and its front end is sandwiched by both cooling drums 51, and its rear end is placed on the transport roller 55. The same coupling 1 as in the first embodiment is mounted and mounted, and the dummy sheet 15 is sandwiched by the pinch roll 56 and the tangential roll 57.

Then, the thread 11 on the transport roller 55
Is moved to the coupling 1 for connection. Other configurations and operations are the same as those of the device of the first embodiment.

In the second embodiment, the guide chute 7 is unnecessary as compared with the first embodiment, and the coupling 1 does not have to pass through the guide chute 7, the tangential roll 57, and the pinch roll 56. Therefore, leading of the strip-shaped cast piece at the start of continuous casting becomes easy.

Although the present invention has been specifically described based on the illustrated embodiments, the specific structures and shapes of the couplings and threads are not limited to the illustrated ones, and various modifications can be made within the scope of the present invention. It is needless to say that other mechanism may be added.

[0026]

According to the present invention, a sled horizontally moving on the conveying roller, a coupling for attaching / detaching a dummy sheet to / from the sled, a descending coupling and a guide chute for horizontally guiding the dummy sheet are provided. As a result, the length of the dummy sheet can be significantly shortened, and the dummy sheet can be easily set on the cooling drum. Therefore, the work for setting the slab leading device becomes easy, and the working time can be greatly shortened.

[Brief description of drawings]

FIG. 1 is a side conceptual view of a twin-drum type continuous casting facility showing a state in which a cast slab leading apparatus according to a first embodiment of the present invention is set.

FIG. 2 is a side view conceptual diagram showing a state where continuous casting is started.

FIG. 3 is a cutaway side view in which an essential part of FIG. 2 is enlarged.

FIG. 4 is a side conceptual view showing a state in which the cast slab leading apparatus according to the second embodiment of the present invention is set.

FIG. 5 is a side conceptual view showing a state in which a conventional cast slab leading device is set.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coupling 7 Guide chute 10 Dummy sheet 11 Thread 15 Dummy sheet 40 Strip cast 50 Molten metal 51 Cooling drum 52 Side dam 53 Hot water pool 55 Conveying roller 56 Pinch roll

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Oka 3434 Shimada, Hikari-shi, Yamaguchi Prefecture Nippon Steel Co., Ltd. Hikari Steel Co., Ltd. (72) Yumitsu Haga 3434 Shimada, Hikari-shi, Yamaguchi Prefecture Nippon Steel Co., Ltd. Inside the Hikari Steel Works

Claims (2)

[Claims] 1. A molten metal is supplied to a molten metal pool portion formed by a pair of cooling drums that rotate in opposite directions and a pair of side dams that abut on both end surfaces of the cooling drum to solidify the molten metal and form a strip shape. In a twin-drum type continuous casting facility for continuously casting slabs, a dummy held between both of the cooling drums, a front end of which protrudes into the molten metal pool, and a rear end of which is suspended below the cooling drum. A seat, a coupling attached to the lower end of the dummy sheet, a guide chute that horizontally changes the progress of the coupling, the dummy sheet, and the strip-shaped slab that are arranged below the coupling and descend. A slab leader for twin-drum type continuous casting equipment, characterized in that the coupling and the thread to be attached / detached are provided so as to be able to travel on conveying rollers arranged in a row in a horizontal direction. 2. A band shape in which molten metal is supplied to a molten metal pool formed by a pair of cooling drums rotating in opposite directions and a pair of side dams abutting both end surfaces of the cooling drum to solidify the molten metal. In a twin-drum type continuous casting facility that discharges the slab downward and feeds the same strip slab horizontally with a pinch roll on the conveying roller, it is sandwiched between both cooling drums, and the tip part is the basin part. A dummy sheet having a rear end portion sandwiched between the pinch rolls, a coupling attached to the rear end portion of the dummy sheet, and a thread detachable from the coupling. A twin-drum type continuous casting equipment slab leading device.