KR101189517B1 - Internally cooled guiding roller - Google Patents

Abstract

The present invention relates to an internally cooled guide roll that is installed in the upper and lower segments of the segment in a continuous casting machine in which a plurality of segments are arranged in series to guide and compress the slab, and in particular, the internally cooled guide roll according to an embodiment of the present invention. It is rotatably provided, and the shaft is formed inside the main cooling water passage and the sub cooling water passage to which the cooling water flows; It is provided so as to surround the outer circumferential surface of the shaft, therein includes at least one roll shell formed with a shell cooling water passage connected to the main cooling water passage and the sub cooling water passage, the shell cooling water passage formed in the roll shell At least one pair of first shell cooling water passages formed in both edge regions of the at least one second shell cooling water passage formed in the central region of the shaft, and the cooling water in the first and second shell cooling water passages, respectively. It is characterized by flowing separately.

Description

Internally Cooled Guide Rolls {INTERNALLY COOLED GUIDING ROLLER}

The present invention relates to a guide roll, and more particularly, to an internally cooled guide roll which is installed in the upper and lower segments of a segment in a continuous casting machine in which a plurality of segments are continuously arranged to guide and compress the cast pieces.

In general, the continuous casting process (continuous casting process) is a process of continuously solidifying the molten steel of the liquid phase to a solid form.

FIG. 1 is a perspective view showing a general continuous casting facility and a segment. Referring to the drawings, the continuous casting process will be described. First, a long nozzle is included in a ladle 10 in which molten steel is finished. The molten steel is injected into the tundish 20, and the molten steel temporarily stored in the tundish 20 is positioned between the tundish 20 and the mold 40. 30) and injected into the mold 40, and solidify through the primary cooling in the mold 40 and the secondary cooling in the lower part of the mold 40, so that the billet, bloom, slab ( It refers to a series of processes for producing cast steel (1) such as slab).

Molten steel discharged through the mold (40) is the upper roller assembly 51 provided in the segment (50) of the continuous casting apparatus in the state that the surface is somewhat solidified through the primary cooling in the mold (40) ) And the lower roller assembly 53, and the cooling water is injected for rapid solidification of the molten steel and continuously changed into the shape of the cast 1 to be manufactured as shown in FIG. 1.

The guide rolls 52 and 54 provided in the segment 50 are generally composed of an upper roller assembly 51 and a lower roller assembly 53, which are composed of 5 to 10 rolls, between which molten steel is cast and rolled. Made into slabs.

The guide rolls 52 and 54 can be divided into a single roll formed into one roll and a divided roll divided into a plurality of split rolls. The split rolls also include a plurality of shells on an axle shaft and a split portion being disconnected. ) Is divided into assembled.

Divided rolls are advantageous to deformation due to the load generated during casting, compared to integral rolls. Rolls with broken sections are excellent in maintenance, such as disassembly and assembly, and shaft and shell type are vertical and horizontal. Most resistant to directional displacement, it is suitable for heavy loads. Thus, integrated rolls are used for the production of relatively narrow slabs within 900 mm in width and for player equipment for producing billets and blooms, and split rolls for the production of relatively wide slabs in width over 900 mm.

Most of the guide rolls 52 and 54 are cooled by the coolant supplied along the flow path formed therein, and the guide rolls 52 and 54 to be cooled are not only resistant to wear but also about 30% of the rolls which are not cooled. It is known to have a slab cooling effect.

However, in order to cool the shell in a guide roll having several shells assembled on one shaft, a flow path for supplying and discharging cooling water from the shaft to the shell must be formed, and a separate sealing structure must be made between the shaft and the shell. However, in this sealing structure, parts are broken or leaks are frequently caused due to problems of the sealing material.

In addition, although the edges and the center region of the guide rolls are heated at different levels by the cast slab, the temperature difference between the edge region and the center region of the guide rolls is generated because the edges of the guide roll and the center region are uniformly cooled. As a result, the solidification of the cast was unevenly progressed, resulting in a problem of deterioration of the quality of the cast during long casting.

Embodiment of the present invention is to separate the edge region and the center region of the guide roll to allow the cooling water to flow separately to selectively cool the edge region and the central region of the guide roll to prevent the solidification unevenness of the cast steel guide Provide a roll.

Further, without providing a separate sealing structure for connecting the cooling water between the shaft and the roll shell, it provides an internally cooled guide roll that can simplify the structure to reduce the leakage of the cooling water.

An internal cooling guide roll according to an embodiment of the present invention is rotatably provided, and a shaft formed therein is divided into a main cooling water passage and a sub cooling water passage in which cooling water flows; It is provided so as to surround the outer circumferential surface of the shaft, therein includes at least one roll shell formed with a shell cooling water passage connected to the main cooling water passage and the sub cooling water passage, the shell cooling water passage formed in the roll shell At least one pair of first shell cooling water passages formed in both edge regions of the at least one second shell cooling water passage formed in the central region of the shaft, and the cooling water in the first and second shell cooling water passages, respectively. It is characterized by flowing separately.

The first shell cooling water passages formed in pairs are in communication with each other through the sub cooling water passages.

The main cooling water path of the shaft is characterized in that it is divided into an inflow path area in which the coolant is introduced from the outside and a discharge water area in which the coolant is discharged to the outside.

One end of the first shell cooling water path is connected to an inflow path area of the main cooling water path, the other end is connected to one end of the sub cooling water path, and one end of the other first shell cooling water path is the other end of the sub cooling water path. It is connected to, the other end is characterized in that connected to the area of the discharge water to the main cooling water.

One end of the second shell cooling water passage is connected to the inflow passage region of the main cooling water passage, and the other end is connected to the discharge passage passage region of the main cooling water passage.

An internally cooled guide roll according to one embodiment of the present invention includes a shaft rotatably provided; At least one roll shell is provided to surround the outer circumferential surface of the shaft, the shaft and the inside of the roll shell is formed with at least two cooling lines which are flowed separately from each other, at least one of the cooling line A first cooling line passing through the inside of the roll shell corresponding to both edge regions of the at least one, and at least another forming a second cooling line passing through the inside of the roll shell corresponding to the central region of the shaft; It is done.

The first and second cooling lines are combined with each other to be introduced into and discharged from the inside of the shaft, and branched from the inside of the shaft.

The first cooling line may include a roll shell corresponding to an inside of one side of the shaft, an inside of a roll shell corresponding to an edge region of the one side of the shaft, an inside of one side of the shaft, an inside of the other side of the shaft and an edge region of the other side of the shaft. It is characterized in that the inner and the other side of the shaft is formed in order.

The second cooling line is formed in the order of the inside of the center of the shaft, the inside of the roll shell corresponding to the central region of the shaft and the inside of the center of the shaft.

An internal cooling guide roll according to an embodiment of the present invention is rotatably provided, and a shaft formed therein is divided into a main cooling water passage and a sub cooling water passage in which cooling water flows; At least one pair of first roll shells provided to enclose an outer circumferential surface of both edges of the shaft, and having a first shell cooling water path formed therein to communicate with the main cooling water path and the sub cooling water path; At least one second roll shell is provided to surround a central outer circumferential surface of the shaft, and a second shell cooling water passage formed therein communicates with the main cooling water passage.

The shaft has a plurality of main branch pipes branching from the main cooling water passage and a plurality of sub branch pipes branching from the sub cooling water passage opening to an outer circumferential surface thereof, and first and second grooves on the inner circumferential surfaces of the first and second roll shells. It is characterized in that a plurality of shell branch pipes branched from each of the two shell cooling water passages and connected to the main branch pipes or the sub branch pipes, respectively.

The main cooling water path of the shaft is divided into an inflow path area into which the coolant flows from the outside and an outlet water path area from which the coolant is discharged to the outside, and at least two main branch pipes are formed in the inflow path area and the discharge water path area respectively. And, respectively, connected to the first and second shell cooling water passages.

Some of the plurality of sub branch pipes branched from the sub cooling water passage are connected to a shell branch pipe formed in any one of the pair of first roll shells, and the remaining sub branch pipes of the pair of first roll shells. It is connected to the shell branch pipe formed in the other one, characterized in that for communicating the pair of first roll shell with each other.

The portion where the main branch pipe or the sub branch pipe and the shell branch pipe are connected is sealed with a sealing member.

The shell branch pipes formed on the inner circumferential surfaces of the first and second roll shells are characterized by being biased to one side selected from the edges of the inner circumferential surfaces of the roll shell.

The shaft and the first and second roll shells are fixed by a parallel key and are rotated integrally.

The first and second shell cooling water passages formed in the first and second roll shells are formed in the axial direction of the shaft, respectively, and are formed in the radial direction of the shaft to connect the water pipe portions. It comprises a plurality of connecting pipe, each of the water pipe and the connecting pipe is characterized in that it forms a continuous cooling water passage.

The first and second shell cooling water passages formed in the first and second roll shells may be disposed at a predetermined distance from the outer circumferential surfaces of the roll shells.

An internal cooling guide roll according to an embodiment of the present invention is rotatably provided, and a shaft formed therein is divided into a main cooling water passage and a sub cooling water passage in which cooling water flows; It is provided so as to surround the outer circumferential surface of the shaft, therein includes at least one roll shell formed with a shell cooling water passage connected to the main cooling water passage and the sub cooling water passage, wherein the roll shell is fixed to the shaft of the shaft The main cooling water passage and the sub cooling water passage and the shell cooling water passage of the roll shell are characterized in direct communication.

The portion where the main cooling water passage and the sub cooling water passage of the shaft and the shell cooling water passage of the roll shell directly communicate with each other is sealed by a sealing member.

The shaft has a plurality of main branch pipes branched from the main cooling water passage, and a plurality of sub branch pipes branching from the sub cooling water passage opening to the outer circumferential surface, and the inner circumferential surface of the roll shell is branched from the shell cooling water passage to the main It is characterized in that a plurality of shell branch pipes which are connected to the branch pipe or sub branch pipes, respectively.

According to the embodiments of the present invention, the cooling line of the edge region and the center region in the longitudinal direction of the guide roll is configured separately, and the temperature of the guide roll can be controlled for each region by flowing the cooling water separately. It can improve the resistance to mechanical thermal stresses generated in the process and prevent the non-uniformity of the slab in the width direction. As a result, it is possible to produce high quality cast steel.

In addition, by directly connecting the shaft constituting the guide roll and the cooling water passage formed in the roll shell, and by providing only a sealing member having a simple structure around the guide roll, the structure of the guide roll can be simplified to reduce the occurrence of leakage of the cooling water.

In addition, since the structure of the guide roll is simplified, it is possible to prevent breakage of the guide roll component during the casting process, thereby shortening maintenance and repair time of the guide roll, thereby improving productivity of the continuous casting facility.

1 is a perspective view showing a typical continuous casting plant and segments,
Figure 2 is a longitudinal sectional schematic view showing a guide roll according to an embodiment of the present invention,
3 is a cross-sectional view taken along line A-A 'and line B-B' of FIG. 2,
4 is a longitudinal sectional schematic view showing an edge area of a guide roll according to an embodiment of the present invention,
5 is a cross-sectional view taken along lines C-C 'and D-D' of FIG. 2,
6 is a cross-sectional view and a longitudinal cross-sectional schematic view showing a guide roll according to another embodiment of the present invention,
7 is a schematic circulating view showing the flow of cooling water flowing in the guide roll according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

First, the guide roll described in the present invention has been described by taking a guide roll provided in the segment of the continuous casting facility as an example for a preferable description. However, the technical idea of the guide roll of the present invention is not limited to the guide roll provided in the segment, and may be applied to various guide rolls requiring selective cooling in the width direction.

Figure 2 is a longitudinal cross-sectional schematic view showing a guide roll according to an embodiment of the present invention, Figure 3 is a cross-sectional view of the line A-A ', line B-B' of Figure 2, Figure 4 according to an embodiment of the present invention It is a longitudinal cross-sectional schematic diagram showing the edge area of a guide roll, and FIG. 5 is a cross-sectional view of the C-C 'line | wire and the D-D' line | wire of FIG.

As shown in the drawing, the guide roll according to the embodiment of the present invention includes a shaft 100 rotatably provided; At least one roll shell 200 provided to surround the outer circumferential surface of the shaft 100.

The shaft 100 serves to mount the guide roll rotatably to the segment 50 and to support the roll shell 200. The shaft 100 is formed in a substantially cylindrical shape. At this time, the longitudinal direction of the shaft 100 is defined as the axial direction, the direction from the center of the shaft 100 toward the outer peripheral surface is defined as a radial direction.

 The shaft 100 is supported by the bearing means 60, for example, a plurality of bearings 61 to be rotatable, and the bearing 61 is preferably installed in the bearing housing 62.

 The shaft 100 has a main cooling channel 110 in the axial direction from the radial center of the inside, at least one sub-cooling channel 120 is formed in parallel to the periphery of the main cooling channel 110. In this case, the main cooling water channel 110 and the sub cooling water channel 120 are formed separately. For example, as shown in FIGS. 3A and 3B, a main cooling water path 110 is formed at a radial center of the shaft 100, and three sub cooling water paths 120 are radially around the main cooling water path 110. Can be formed. The arrangement and the number of the main cooling water passages and the sub cooling water passages are not limited to the embodiments shown, but may be variously implemented.

The main cooling channel 110 is divided into an inflow channel region 110a through which the coolant flows from the outside and a discharge channel region 110b through which the coolant is discharged to the outside. Thus, the inflow channel region 110a and the discharge channel region 110b extend to both ends of the shaft 100, respectively, and a rotary joint 70 is connected to an end thereof. Of course, the main cooling water channel 110 is not divided into the inflow channel region 110a and the discharge channel 110b, but may be formed in communication. The rotary joint 70 may not be connected to both ends of the shaft 100. May be connected to the selected one end of the shaft 100.

The roll shell 200 is installed to surround the outer circumferential surface of the shaft 100 and rotates integrally with the shaft 100 to guide or press the cast slab 1 to have a substantially cylindrical pipe shape. . Of course, the inner diameter of the roll shell 200 is preferably formed to be equal to or slightly larger than the outer diameter of the shaft 100.

One roll shell 200 may be provided, but a plurality of roll shells 200 may be provided and fixedly supported on the outer circumferential surface of the shaft 100 at regular intervals. In the present embodiment, it is preferable that three roll shells are provided, one at each edge region of the shaft 100 and one at the center region of the shaft 100. Of course, the number and arrangement of the roll shell 200 is not limited to the embodiment shown, it can be implemented in various combinations that can preferably guide or push the cast (1). In the present embodiment, for the sake of clarity, the roll shells disposed at both edge regions of the three roll shells 200 are referred to as first roll shells 201 and 203, and the roll shells disposed in the central region are referred to as second roll shells 202. It is referred to as). In addition, when distinguishing a pair of 1st roll shells 201 and 203, for convenience, the 1st roll shell arrange | positioned at the left edge in FIG. 2 is called the left 1st roll shell 201, and the 1st roll arrange | positioned at the right edge The shell is referred to as the right first roll shell 203.

Shell cooling water passages 210 are formed in the first and second roll shells 200, respectively. The shell cooling water passages 210 formed in the first and second roll shells 200 are referred to as first shell cooling water passages 210a and 210c and second shell cooling water passages 210b, respectively. In this case, as shown in (a) and (b) of FIG. 5, the shell cooling water path 210 includes a plurality of water pipe parts 211 formed radially spaced apart in the axial direction of the shaft 100, respectively, It is formed in the radial direction of the shaft 100 includes a plurality of connecting pipe portion 213 connecting between the water pipe portion 211. Thus, each of the water pipe part 211 and the connection pipe part 213 communicate with each other in the first and second roll shells 200 to form one continuous cooling water path.

In this case, the first and second shell cooling water passages 210 formed in the first and second roll shells 200, preferably at least the water pipes 211, are disposed at a predetermined distance from the outer circumferential surfaces of the roll shells 200. . Preferably, the water pipe part 211 is disposed within 50 mm from the outer circumferential surface of the roll shells 200. Thus, by arranging the first and second shell cooling water passages 210 close to the outer circumferential surface, the cooling effect of the roll shell 200 can be improved, and accordingly, the temperature control for each region of the guide roll can be relatively fine.

In addition, since the water pipe part 211 is preferably formed in an even number, both ends of the first and second shell cooling water paths 210 communicating with the water pipe part 211 and the connection pipe part 213 are first and first. Two roll shell 200 is preferably to be biased to any one selected from the inner peripheral surface edge. Thus, the first and second roll shell 200 to implement a structure that is easy to fix to the shaft 100, and the first and second shell cooling water passage 210 and the main cooling water passage 110 or the sub cooling water passage ( Concentrating the connection portion of 120) to easily form a leak-proof structure, and easy to repair.

The first and second shell cooling water passages 210 formed in the first and second roll shells 200 are selectively connected to the main cooling water passage 110 or the sub cooling water passage 120 of the shaft 100. . Preferably, one end of the first shell cooling water passage 210a formed in the left first roll shell 201 is connected to the inflow passage region 110a of the main cooling water passage 110, and the left first roll shell ( The other end of the first shell cooling water passage 210a formed at 201 is connected to one end of the sub cooling water passage 120, and the first shell cooling water passage 210c of the right first roll shell 203 is formed. One end is connected to the other end of the sub cooling water passage 120, and the other end of the first shell cooling water passage 210c formed in the right first roll shell 203 is an outlet channel region of the main cooling water passage 110. 110b) to form a first cooling line.

One end of the second shell cooling water channel 210b is connected to the inflow channel region 110a of the main cooling channel 110, and the other end is connected to the discharge channel region 110b of the main cooling channel 110. To form a second cooling line.

Thus, the first and second cooling lines are combined with each other and flow into the inflow channel region 110a of the shaft 100, and then branched inside the shaft 100 to be separately formed, and then again the shaft ( The discharged water of 100 is combined in the area and discharged to the outside of the shaft 100.

As shown in (a) and (b) of FIG. 3, connecting the main cooling water passage 110 and the sub cooling water passage 120 and the first and second shell cooling water passages 210 formed in the shaft 100. To this end, the shaft 100 includes a plurality of main branch pipes 111 branched in the radial direction of the shaft 100 from the main cooling water passage 110, and a radial direction of the shaft 100 in the sub cooling water passage 120. A plurality of sub branch pipes 121 branched to the outer circumferential surface, and the inner circumferential surface of the first and second roll shell 200 is branched from the first and second shell cooling water passage 210, respectively, to the main branch pipe. A plurality of shell branch pipes 220 connected to the 111 or the sub branch pipes 121 are formed. In this case, since the shell branch pipe 220 is impossible to drill radially from the inside of the roll shell 200, it is preferable to process the hemisphere using a milling cutter.

At least two main branch pipes 111 are formed in the inflow channel region 110a and the discharge channel region 110b, respectively, and are connected to the first and second shell cooling channel 210, respectively. For example, two main branch pipes 111a and 111b are formed in the inflow passage area 110a, and one main branch pipe 111a is a shell branch pipe formed in the left first roll shell 201 ( 220a), and the other main branch pipe 111b is connected to the shell branch pipe 220a formed in the second roll shell 202. In addition, two main branch pipes 111c and 111d are formed in the discharge channel region 110b, and one main branch pipe 111d is a shell branch pipe 220b formed in the right first roll shell 203. Is connected to, the other main branch pipe 111c is preferably connected to the shell branch pipe (220b) formed in the second roll shell 202.

In addition, some of the sub branch pipes 121a among the plurality of sub branch pipes 121a and 121b branched from the sub cooling water passage 120 are connected to the shell branch pipe 220b formed in the left first roll shell 201. And the remaining sub branch pipes 121b are connected to a shell branch pipe 220a formed in the right first roll shell 203 so that the left first roll shell 201 and the right first roll shell 203 are connected to each other. Communicate with each other.

Thus, the first cooling line is the main branch pipe (111a) formed in the inlet channel region 110a, the inlet channel region 110a of the main cooling channel 110 of the shaft 100, the left first roll shell 201 ) Shell branch pipe (220a) formed in the shell), the first shell cooling water passage (210a) formed in the left first roll shell 201, shell branch pipe (220b) formed in the left first roll shell 201, one side Formed in the sub branch pipe | tube 121a, the sub cooling water path 120, the other sub branch pipe | tube 121b, and the shell branch pipe | tube 220a formed in the right 1st roll shell 203, and the right 1st roll shell 203. The first shell cooling water passage 210c, the shell branch pipe 220b formed in the right first roll shell 203, the main branch pipe 111d formed in the discharge water passage region 110b of the main cooling water passage 110, It is connected to and communicated with the drainage water in the region 110b.

The second cooling line includes a main branch pipe 111b and a second roll shell 202 formed in the inflow channel region 110a and the inflow channel region 110a of the main cooling channel 110 of the shaft 100. Outlet water passage region 110b of one side shell branch pipe 220a, the second shell cooling water channel 210b, and the second shell shell tube 220b formed in the second roll shell 202 and the main cooling water channel 110 formed in The main branch pipe (111c) formed in the), the discharge passage area 110b in order to communicate with each other.

In this case, a portion where the main branch pipe 111 or the sub branch pipe 121 is connected to the shell branch pipe 220 is sealed with a sealing member 400. The sealing member 400 may use various means for sealing a portion where the main branch pipe 111 or the sub branch pipe 121 and the shell branch pipe 220 are connected. For example, donut-shaped grooves may be formed on the inner circumferential surfaces of the first and second roll shells 200, and the grooves may be formed through a sealing ring, for example, an O-ring.

Preferably, the shaft 100 and the first and second roll shells 200 are fixed by the parallel key 300 to be integrally rotated. To this end, the parallel key 300 is attached to the outer circumferential surface of the shaft 100 in a number corresponding to the number of the first and second roll shell 200, the first and second roll shell 200 A key groove 310 corresponding to the parallel key 300 is formed on an inner circumferential surface thereof. In this case, since the key groove 310 is formed such that both ends of the first and second shell cooling water passages 210 are biased to any one selected from the inner circumferential edges of the first and second roll shells 200 as described above. Both ends of the first and second shell cooling water passages 210 may be easily formed on opposite sides. In addition, in order to easily install the first and second roll shells 200 to the shaft 100, the key groove 310 is preferably extended to the ends of the first and second roll shells 200 to be opened. Thus, the first and second roll shells 200 may be inserted into one end of the shaft 100 to slide the parallel key 300 into the key groove 310 to provide a fixed force. In this case, the outer diameter of the shaft 100 may not be formed to have the same diameter, so that the outer circumferential surface of the shaft 100 may be gradually inclined to facilitate assembly and separation of the first and second roll shells 200. Of course, when changing the outer diameter of the shaft 100, the inner diameter of the first and second roll shell 200 should also be changed corresponding to the outer diameter of the shaft 100.

6 is a cross-sectional view and a longitudinal cross-sectional schematic view showing a guide roll according to another embodiment of the present invention, the guide roll according to another embodiment of the present invention has a similar configuration to the embodiment described above. However, at the end of the shell branch pipe 220 formed in the first roll shells 201 and 203, a residence space 500 in which the coolant can stay is formed. The staying space 500 is formed in a donut shape along the inner diameters of the first roll shells 201 and 203 to communicate the shell branch pipes 220 formed in the first roll shells 201 and 203. In this way, as the staying space 500 for communicating the shell branch pipes 220 is formed, the direction and number of branches of the main branch pipe 111 formed in the main cooling water path 110 of the shaft 100 can be variously changed. There is an advantage that can simply form the processing method and structure of the shaft 100.

The flow of the cooling water flowing in the guide roll according to the present invention configured as described above will be described with reference to the drawings.

7 is a schematic circulating view showing the flow of cooling water flowing in the guide roll according to the present invention.

As shown in FIG. 7, some of the cooling water introduced into the inflow channel region 110a of the main cooling channel 110 may pass through the first shell cooling channel of the left first roll shell 201 through the main branch pipe 111a ( It flows into 210a and rounds the left first roll shell 201. The coolant flows into the first shell cooling water path 210c of the right first roll shell 203 through the sub cooling water path 120 to round the right first roll shell 203, and then the main cooling water path 110. Is discharged to the outside of the shaft 100 through the discharge passage area 110b.

In addition, the remaining of the cooling water introduced into the inflow channel region 110a of the main cooling channel 110 is introduced into the second shell cooling water channel 210b of the second roll shell 202 through the main branch pipe 111b. The roll shell 202 is rounded. The coolant is discharged to the outside of the shaft 100 through the discharge channel region 110b of the main cooling channel 110 (second cooling line).

When a plurality of roll shells 200 are attached to the shaft 100 constituting the guide roll as described above, the cooling lines flowing through the edge regions of the shaft 100 and the roll shells 200 disposed in the central region are divided by regions. By separately flowing by adjusting the width direction solidification degree of the cast or guided by the guide roll by the guide roll to prevent the non-uniformity of the solidification by region.

Although the present invention has been described as an embodiment in which three roll shells are attached to one shaft, the number of roll shells is not limited thereto, and a coolant path formed inside the roll shell separates an edge region and a central region of the shaft. Thus, the cooling line may be modified and implemented in various ways in which the cooling line may be formed.

The present invention is not limited to the above-described embodiments, but may be embodied in various forms. In other words, the above-described embodiments are provided so that the disclosure of the present invention is complete, and those skilled in the art will fully understand the scope of the invention, and the scope of the present invention should be understood by the appended claims .

100: shaft 110: main cooling flow path
120: sub cooling flow path 200: roll shell
210: shell cooling flow path

Claims (21)

As a guide roll,
A shaft rotatably provided therein, the main cooling water passage in which the cooling water flows, and a sub cooling water passage formed therein;
It is provided to surround the outer circumferential surface of the shaft, therein includes at least one roll shell formed with a shell cooling water passage connected to the main cooling water passage and the sub cooling water passage,
The shell cooling water path formed in the roll shell is divided into at least one pair of first shell cooling water paths formed in both edge regions of the shaft and at least one second shell cooling water formed in a central area of the shaft. An internally cooled guide roll in which coolant flows separately in the first and second shell cooling water paths. The method according to claim 1,
And the first shell cooling water path formed in a pair communicates with each other through the sub cooling water path. The method according to claim 1 or 2,
The internal cooling guide roll of the main cooling water path of the shaft is divided into an inflow path region into which the coolant flows from the outside and a discharge water region from which the coolant is discharged to the outside. The method according to claim 3,
One end of the one side first shell cooling water passage is connected to an inflow passage region of the main cooling water passage, and the other end is connected to one end of the sub cooling water passage.
And one end of the other first shell cooling water passage is connected to the other end of the sub cooling water passage, and the other end of the first shell cooling water passage is connected to an area of the discharge water passage of the main cooling water passage. The method according to claim 3,
And one end of the second shell cooling water passage is connected to the inflow passage region of the main cooling water passage, and the other end of the second shell cooling water passage is connected to the discharge passage passage region of the main cooling water passage. As a guide roll,
A shaft rotatably provided; At least one roll shell provided to surround the outer peripheral surface of the shaft,
At least two cooling lines are formed in the shaft and the roll shell to flow separately from each other,
At least one of the cooling lines forms a first cooling line passing through the inside of the roll shell corresponding to both edge regions of the shaft, and at least the other passes through the inside of the roll shell corresponding to the central region of the shaft. Internally cooled guide rolls forming a second cooling line. The method of claim 6,
The first and second cooling lines are combined with each other to enter and exit the inside of the shaft, the internal cooling guide roll is formed in each branch is formed separately from the inside of the shaft. The method of claim 7,
The first cooling line may include a roll shell corresponding to an inside of one side of the shaft, an inside of a roll shell corresponding to an edge region of the one side of the shaft, an inside of one side of the shaft, an inside of the other side of the shaft and an edge region of the other side of the shaft. An internally cooled guide roll formed in the inner order and the other inner side of the shaft. The method of claim 7,
The second cooling line is formed inside the center of the shaft, the inside of the roll shell corresponding to the center region of the shaft and the inner cooling guide roll in the order of the inner center of the shaft. As a guide roll,
A shaft rotatably provided therein, the main cooling water passage in which the cooling water flows, and a sub cooling water passage formed therein;
At least one pair of first roll shells provided to enclose an outer circumferential surface of both edges of the shaft, and having a first shell cooling water path formed therein to communicate with the main cooling water path and the sub cooling water path;
And an at least one second roll shell provided to surround a central outer circumferential surface of the shaft, and having a second shell cooling water passage formed therein in communication with the main cooling water passage. The method of claim 10,
The shaft has a plurality of main branch pipes branched from the main cooling water passage, and a plurality of sub branch pipes branching from the sub cooling water passage opening to the outer circumferential surface,
The inner circumferential surface of the first and second roll shells are internally cooled guide rolls formed with a plurality of shell branch pipes branched from the first and second shell cooling water passages respectively and connected to the main branch pipe or sub branch pipe. The method of claim 11,
The main cooling water path of the shaft is divided into an inflow path area into which the coolant flows from the outside and a discharge water area from which the coolant is discharged to the outside.
At least two main branch pipes are formed in each of the inflow passage and the discharge passage, respectively, and are connected to first and second shell cooling passages, respectively. The method of claim 11,
Some of the plurality of sub branch pipes branched from the sub cooling water passage are connected to a shell branch pipe formed in any one of the pair of first roll shells, and the remaining sub branch pipes of the pair of first roll shells. And an internally cooled guide roll connected to the shell branch pipe formed on the other to communicate the pair of first roll shells with each other. The method of claim 11,
And the portion where the main branch pipe or the sub branch pipe is connected to the shell branch pipe is sealed with a sealing member. The method of claim 11,
An inner cooling guide roll having a shell branch pipe formed on the inner circumferential surfaces of the first and second roll shells is biased to any one selected from the inner circumferential surface edges of the roll shell. The method of claim 10,
And the shaft and the first and second roll shells are fixed by a parallel key to rotate integrally. The method of claim 10,
The first and second shell cooling water passages formed in the first and second roll shells are formed in the axial direction of the shaft, respectively, and are formed in the radial direction of the shaft to connect the water pipe portions. Including a plurality of connectors,
And an internally cooled guide roll communicating with the water pipe part and the connecting pipe part, respectively, to form one continuous cooling water path. The method according to claim 10 or 17,
The first and second shell cooling water passages formed in the first and second roll shells are disposed at a predetermined distance from the outer peripheral surface of the roll shells. As a guide roll,
A shaft rotatably provided therein, the main cooling water passage in which the cooling water flows, and a sub cooling water passage formed therein;
It is provided to surround the outer circumferential surface of the shaft, therein includes at least one roll shell formed with a shell cooling water passage connected to the main cooling water passage and the sub cooling water passage,
An internally cooled guide roll in which the roll shell is secured to the shaft and directly communicates with the main cooling water passage and the sub cooling water passage of the shaft and the shell cooling water passage of the roll shell. The method of claim 19,
And an area where the main cooling water passage and the sub cooling water passage of the shaft communicate with the shell cooling water passage of the roll shell is sealed with a sealing member. The method of claim 19,
The shaft has a plurality of main branch pipes branched from the main cooling water passage, and a plurality of sub branch pipes branching from the sub cooling water passage opening to the outer circumferential surface,
An inner cooled guide roll formed on an inner circumferential surface of the roll shell, a plurality of shell branch pipes branched from shell cooling water passages and connected to the main branch pipe or sub branch pipe, respectively.

Images