KR20020021456A - roll for carrying a bending slab on roller table - Google Patents

Abstract

PURPOSE: A roll for transferring a bending slab on a roller table is provided which smoothly transfers a rectangular sectional slab bended due to cooling differences between the upper and lower parts of the slab during strip casting to a discharging position without being caught on the roller table. CONSTITUTION: In plural roll members which are rotationally driven on a roller table so as to transfer a slab(3), the roll for transferring a bending slab on the roller table is characterized in that one or more catch grooves(51) are depressed on the outer part of the body contacted with the lower part of the slab(3) in a width direction of the slab(3), wherein the catch grooves(51) are formed in a polygonal shape having a triangular or rectangular cross section, or a circular shape so that lower corners of the front end of the slab(3) are well caught by the catch grooves(51).

Description

Roll for carrying a bending slab on roller table

The present invention relates to a roll capable of smoothly transporting a slab bent on a roller table. More particularly, the slab on a rectangular cross-section curved by upper and lower cooling differences during casting can be smoothly transported to a dispensing position on a roller table. The invention relates to a roll for feeding a bending slab on a roller table.

In general, the continuous casting process performed in the steel mill is supplied to the tundish 13 through the immersion nozzle 12 from the ladle 11 containing the molten steel into the tundish 13, the molten steel filled tundish 13 as shown in FIG. When molten steel is supplied to the mold 15 through another nozzle 14, the molten steel coming out of the mold 15 is continuously cast into a cast piece having a rectangular cross section.

In addition, the cast slab 2 of the rectangular cross section cast from the mold 15 passes through a plurality of guide rolls 16 installed in the banding, the casting bow 16 and the horizontal, and a torch cutting machine 17 ), The torch cutter machine 17 cuts the slab 2 to a predetermined length to produce a slab 3, and the cut slab 3 rotates by a driving force of a motor not shown. It is moved to the position for dispensing to the next process by the some rotation roll which becomes.

However, in the process of transferring the cut slab 3 using the rotary roll 4 mounted on the roller table 90 installed in the section for transferring the slab 3, as shown in FIG. If the slab 3 is bent due to a cooling difference in the upper and lower surfaces, the lower edge of the slab 3 is severely bent downward and struck downward so that the slab 3 is caught by the rotary roll 4 during the transfer. Then, the slab (3) caused a problem that frequently occurs the casting stop accident that can not be carried over to the rotational roll 4 is rotated in one direction can not be transferred smoothly to the discharge position.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and its purpose is to prevent the lower edge of the slab tip from contacting the rotating roll due to the bending phenomenon of the slab by the upper and lower cooling differences so that the casting work and It is an object of the present invention to provide a roll for feeding a bending slab on a roller table capable of smoothly performing the next work.

1 is a process chart showing a typical continuous casting equipment,

Figure 2 is a working state showing the cast steel using the cast steel roll according to the prior art,

3 is a plan view showing a working state using the banding slab transfer roll on the roller table according to the present invention,

Figure 4 is a side view showing the working state using the banding slab transfer roll on the roller table according to the present invention.

Explanation of symbols on the main parts of the drawings

2 ..... cast 3 .... slabs

11 .... ladle 15 .... mold

17 .... torch cutter machine 51 .... hanging groove

90 .... Roller Table 92 .... Chain

93 .... sprocket 94 ..... motor member

As a technical configuration for achieving the above object, the present invention,

In the plurality of roll members rotated to feed the slab on the roller table,

By providing a banding slab transfer roll on a roller table, characterized in that one or more engaging grooves are formed in the width direction of the slab on the outer surface of the body in contact with the lower surface of the slab.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

3 is a plan view showing a working state using the banding slab transfer roll on the roller table according to the present invention, Figure 4 is a side view showing a working state using the banding slab transfer roll on the roller table according to the present invention, 3 and 4, the roll 100 of the present invention is a slab (3) obtained by cutting the slab (2) of the rectangular cross-sectional structure cast from the mold (15) by a torch cutting machine (17). In the process of transporting the roller table 90 to the discharged position at equal intervals so that the slab 3 bent by the upper and lower cooling differences can be continuously transported to the discharged position smoothly without congestion. It is arranged to be rotatable.

The roll 100 is a lower portion of the front end of the slab (3) bent downward by the cooling difference in the width direction of the slab (3) on the outer surface of the body 50 in contact with the lower surface of the slab (3) that is the transfer object. The recess p is recessed to form one or more catching grooves 51 so that the edge p1 can be retracted without being pulled out.

In addition, the locking groove 51 may be composed of a triangular, rectangular cross-sectional polygonal cross-sectional structure or circular cross-sectional structure so that the locking of the lower edge (p) of the front end of the slab (3) is properly made, the roll 100 is As shown in FIG. 4, it is preferable that the engaging grooves 51 formed in the adjacent rolls 100 are arranged at equal intervals on the roller table 90 so as not to have the same arrangement structure.

On the other hand, both ends of the roll 100 are mounted with a sprocket 93 on which the chain 92 is wound so as to transmit a rotational driving force capable of transferring the slab mounted on the roller table 90 to the discharge position of the next process. And, the rotation drive motor member 94 is mounted on the sprocket 93 of one side roll (100).

The operation and effects of the present invention as described above will be described.

The cast slab 2 is cut to a certain length with the torch cutter machine 17 to manufacture the slab 3, and then the motor member (1) is continuously transferred to the discharge position of the slab mounted on the roller table 90. 94 is driven, the roll 92, which is connected to the chain 92 and the sprocket 93 and is disposed at equal intervals on the roller table 90, is rotated in one direction (counterclockwise in the drawing), and the upper portion thereof. The slab 3 of the heavy material placed on the surface is started to be transferred in one direction (right direction in the drawing).

The slab (3) in contact with the atmosphere during the transfer process is a bending phenomenon in which the front and the rear end is bent to the lower side by the cooling difference between the upper and lower surfaces, at this time the lower edge (p) of the bent slab edge is caught groove ( When the slab 3 comes into contact with the smooth outer surface of the roll 100 where it is not formed, the slab 3 no longer moves forward and stagnates in place, whereas the roll 100 comes into contact with the slab 3 tip. ) Receives the driving force of the motor member 94 and continues to rotate in the conveying direction.

Therefore, when the lower edge p of the slab 3 in contact with the outer surface of the roll 100 coincides with the engaging groove 51 of the roll 100 that is rotationally driven, the slab 3 having straightness to be advanced. Since the lower edge p of the) is introduced into the locking groove 51 to secure the locking force, the lower edge p of the slab tip is lifted by the rotational driving force of the roll 100 and the upper portion of the roll 100. The slab 3 can continue to be transferred to the next process by lifting it.

According to the present invention having the above-described configuration, by recessing the engaging groove on the outer surface of the roll that is rotated to transfer the slab on the roller table, the lower edge of the front end is caught in the locking groove during the transfer of the lower banded slab When the slab is moved to the upper part of the roll, the conveying work can be carried out smoothly. Therefore, it is possible to prevent the high temperature slab from stagnating for a long time on the roller table, thereby suppressing the equipment failure and preventing the casting breakdown accident. The effect of reducing the manufacturing cost is obtained.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (2)

In the plurality of roll members which are driven to rotate the slab 3 on the roller table 90, Rolling slab transfer rollers on the roller table, characterized in that one or more locking grooves (51) formed in the width direction of the slab on the outer surface of the body in contact with the lower surface of the slab (3). The method of claim 1, The locking groove 51 is a roller slab transfer roll on the roller table, characterized in that consisting of a triangular, rectangular cross-sectional polygonal or circular cross-sectional structure to ensure that the lower edge of the slab (3) is properly engaged.