KR101129499B1 - Continuous caster with roller step height adjusted - Google Patents

Abstract

The continuous casting machine in which the roller step is adjusted according to the present invention can automatically detect and adjust the step between the upper segment and the casting beam according to the pressure of the cast steel moved between the rollers at the same time as the continuous casting operation, before the start of the continuous casting process or Even if there is a step between the upper segment and the casting beam after the start, it is not necessary to recalibrate it. Also, the error caused by various factors such as the local temperature rise of the cast and the pressure of the molten steel inside the cast is naturally The advantage is that it can be erased.

Roll, roller, playing machine, step, error, cast, molten steel, link, casting beam, segment.

Description

Continuous caster with roller step height adjusted}

1 is a plan view illustrating a coupling between an upper segment and a casting beam of a conventional continuous casting machine.

2 shows the step that occurs between the upper segment and the casting beam.

3 is a plan view showing a control block of a conventional continuous casting machine.

Figure 4 is a perspective view showing the upper segment of the continuous casting machine is adjusted roller step according to the present invention.

5 is an exploded perspective view showing the adjusting roller portion and the step correction portion of the continuous casting machine is adjusted roller step according to the present invention.

6 is a plan view showing a case where the step correction unit of the continuous casting machine in which the roller step according to the present invention is adjusted is operated by the step.

<Description of the symbols for the main parts of the drawings>

100: upper segment 102: upper beam

104: lower beam 105: fixed bar

106: guide groove 112: upper adjustment roller

114: lower adjustment roller 115: guide bolt                 

116: moving block 118a: first elastic means

118b: second elastic means 121: rotating body

122: outer cover 123a: projection

123b: protrusion coupling hole 124: connection link

125: transmission link 128: control block

128a: first member 128b: second member

129a: insertion groove 129b: liner

210: mounting base 310: mounting bar

The present invention relates to a continuous casting machine in which a roller step is configured to automatically maintain an optimum alignment during operation in order to prevent the quality of the cast slab caused by the step difference between the upper segment and the casting beam of the continuous casting machine.

In general, the continuous casting process is a molten steel is injected into the tundish through a long nozzle in a ladle containing the molten steel after the refining process, the molten steel temporarily stored in the tundish It is injected into the mold via a molten steel delivery system located between the tundish and the mold, and is solidified through the first cooling in the mold and the second cooling in the lower part of the mold. Refers to a series of processes for producing slabs such as bloom, beam blanks, slabs and the like.

Molten steel discharged through the mold is introduced between the upper and lower roller assemblies provided in the continuous casting machine after the primary cooling in the mold to slightly solidify the surface, whereby coolant is injected for rapid solidification of the molten steel. The shape of the cast steel to be produced is continuously changed. This continuous casting machine is composed of an upper segment for solidifying the molten steel in the initial stage and a casting bow for continuously forming the semi-solid cast slab processed from the upper segment in order to obtain a slab having a desired shape. Is done.

1 is a plan view illustrating a coupling between an upper segment and a casting beam of a conventional continuous casting machine.

As shown in FIG. 1, the casting beam 20 is composed of a combination of casting rollers 26 including drive rollers and non-drive rollers, between the casting beam upper beam 22 and the casting beam lower beam 24. In the cast roller 26 is compressed to be transported by the cast slab is configured to be gradually moved. In addition, the upper segment 10 is coupled to the upper end of the casting beam 20, the upper segment 10 for the initial treatment of the slab close to the semi-liquid bar, the upper segment 10 is similar to the casting beam 20, the casting roller The upper segment upper beam 12 and the upper segment lower beam 14, which are composed of a combination of segment rollers 17 smaller than the size of 26, are compressed by the segment rollers 17 in a space formed apart from each other. It is configured to form cast pieces that gradually solidify as they are conveyed.

The upper segment 10 of the adjusting block seating bar 28 formed at the upper end of the adjusting block 18 and the casting beam lower beam 24 fixedly coupled by the bolt 40 at the lower end of the upper segment lower beam 14. One side is supported by the coupling, and an upper fixing bar 16 formed at the upper end of the upper segment lower beam 14 and a support guide 30 supporting the upper segment 10 and the casting beam 20. The other side is supported by the coupling of the seating base 32 of the upper end and is connected to the casting beam.

After performing the connection operation as described above, as shown in FIG. 2, for example, the upper fixing bar 16 between the upper segment roller 17 coupled to the upper segment and the casting roller 26 coupled to the casting beam. ) And a step as long as δ length may occur depending on an unexpected external factor such as a seating base 32 or a coupling part wear between the adjusting block 18 and the seating bar 28.

This step is such a step that it is not easy to obtain a homogeneous cross section with good segregation due to the sudden pressure change when the cast in the initial solidified state is moved from the upper segment 10 to the casting beam 20, Is generated, the thickness of the liner 19 positioned between the adjusting block 18 and the coupling portion of the seating bar 28 as shown in FIGS. 1 and 3 is adjusted by δ length as shown in FIG. 2. You will work to correct the step.

However, the roller step adjustment method as described above reduces the step by adjusting the thickness of the liner 19 of the adjusting block 18, and repeats the steps of re-adjusting the thickness of the liner 19 after measuring again. Because of this, it was necessary to work after stopping the operation because it took a long time, and it was not good for cast quality because it could not cope with various factors such as local temperature rise and pressure of molten steel inside the cast during operation. There was a problem such as not affecting.

The present invention has been made to solve the above-described problems, the roller step which can automatically detect and adjust the step between the upper segment and the casting beam according to the pressure of the cast steel moved between the rollers at the same time as the continuous casting operation is adjusted It is an object to provide a continuous casting machine.

It is also an object of the present invention to provide a continuous casting machine in which a roller step is adjusted, in which a step between the upper segment and the casting beam occurs even before or after the start of the continuous casting process is not required.

It is also an object of the present invention to provide a continuous casting machine in which a roller step capable of naturally eliminating errors caused by various factors such as local temperature rise of the cast steel and pressure of molten steel in the cast steel is naturally eliminated.

In addition, the objects of the present invention are not limited to the above-mentioned objects, other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

Continuous caster is adjustable roller step according to the present invention for achieving the above object, the upper segment including an upper beam and a lower beam rotatably mounted to each other a plurality of rollers are arranged opposite to each other, and the lower beam bottom A continuous casting machine including a casting beam having a casting beam upper beam and a casting beam lower beam, coupled to an adjustment block provided at the upper side, for drawing a slab processed from the upper segment, the lower and upper ends of the upper beam and the lower beam. An adjusting roller portion provided to move upward and downward in a direction in which at least a pair of upper and lower adjusting rollers rotatably mounted in parallel with the roller face each other; A connection link coupled between the rotary shafts of the upper and lower adjustment rollers, a transmission link of which one end is rotatably connected to the rotary shaft of the lower adjustment roller or one end of the connection link, and one end of which is rotatable with the other end of the transmission link. Includes an insertion groove formed to be connected to the mounting bar is formed on the upper end of the casting beam lower beam to be fastened at the other end and comprises a step correction unit including an adjustment block rotatably mounted on one side of the lower beam. do.

In addition, the adjustment block is coupled to the inner surface of the insertion groove portion includes a liner in contact with both ends of the rotation axis of the seating bar.

In addition, the adjustment roller portion is a moving block rotatably coupled to both ends of the rotation axis of the upper adjustment roller and the lower adjustment roller, respectively, and guide grooves formed on one side of the upper beam and the lower beam to guide the movement of the moving block, respectively. It includes what consists of.

In addition, the moving block is formed with a through groove penetrating the upper and lower ends, the bottom surface of the guide groove includes one end of the guide bolt inserted into the through groove is coupled.

In addition, a first elastic means is installed between the other end of the guide bolt and the movable block.

In addition, a second elastic means is installed between the bottom surface of the guide groove and the movable block facing it.

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The transmission link also includes an adjustable length.

The adjusting block may include a second member having the insertion groove portion and a first member rotatably connected to the transfer link, and the first and second members may be rotatably coupled at a predetermined angle. do.

In addition, the coupling hole is formed in the inner circumferential surface through the first and second members in the same shape is formed, and includes a rotating body formed with a projection penetrating the coupling hole and the protrusion on the outer circumferential surface, the rotating body is It includes rotatably mounted on one side of the lower beam.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the continuous casting machine is adjusted roller step according to the present invention.

Figure 4 is a perspective view showing the upper segment of the continuous casting machine is adjusted roller step according to the present invention, Figure 5 is an exploded perspective view showing the adjustment roller portion and the step correction portion of the continuous casting machine is adjusted roller step according to the present invention. .                     

The upper segment 100 according to the present invention has a top fixing bar 105 formed on the upper end of the upper segment lower beam 104 and the upper part of the guide guide supporting the upper segment 100 and the casting beam as in the conventional method. The mounting base 210 is fastened, and the adjustment block 128 provided at the lower end of the lower beam 104 and the mounting bar at the upper end of the lower beam of the casting beam are fastened to be coupled to the casting beam and the support purlin.

As shown in FIGS. 4 and 5, the upper segment 100 is the first position of the upper and lower rollers coupled to the upper beam 102 and the lower beam 104 along the opposite direction of the casting direction (i.e., upper). A pair of upper adjusting rollers 112 and lower adjusting rollers 114 coupled to the bottommost position of the segment or the position facing the casting beam) so as to be able to move a certain distance vertically or at an angle in the casting direction. It includes a roller portion.

As shown in the drawing, only one adjustment roller may be formed along a position facing the casting beam, and a plurality of adjustment rollers may be formed adjacent to each other.

The adjusting roller portion is coupled to the guide groove 106 formed so that the lower and upper portions of the upper beam 102 and the lower beam 104 are recessed, and the upper adjusting roller 112 and the lower adjusting of the adjusting roller portion. It is coupled to both ends of the rotary shaft of the roller 114, and includes a moving block 116 is installed to be moved up and down along the groove in the guide groove 106, to the vertical sliding movement of the moving block 116 As a result, the vertical movement of the upper and lower adjustment rollers 112 and 114 becomes possible. At this time, the guide groove 106 is formed so that the movable block 116 can be moved up and down in the direction in which the upper adjustment roller 112 and the lower adjustment roller 114 face.

As a configuration for guiding the vertical movement of the movable block 116, the upper and lower ends of the movable block 116 is coupled into the through groove formed through, one end is attached to the bottom surface of the guide groove 106 Guide bolts 115 to be fastened are further provided. In addition, between the other end of the guide bolt 115 and the upper surface of the movable block 116 is coupled to the first elastic means 118a such as a spring having an elastic force, and the bottom surface of the guide groove 106 A second elastic means 118b is coupled between the bottom surfaces of the moving block 116 to face each other to provide a force for restoring back to the original position even if the adjusting roller part is moved up and down by a cast steel.

When the cast piece is moved between the rollers of the upper segment including the adjusting roller portion and drawn between the first casting rollers of the casting beam, the upper adjusting roller 112 and the lower adjusting roller 114 of the upper segment 100 and If there is a step between the first upper casting roller and the lower casting roller of the casting beam that can cause a sudden cross-sectional change in the cast steel, the moving block 116 is moved upward or downward to reduce the level of the cast steel. Will be. In addition, in order to detect such a change and further reduce the step of the cast steel, it may be possible by allowing the adjusting block 128 coupled to the seating bar of the casting beam to rotate slightly upward or downward.

The step correction part provided for the above reason is coupled between the rotation axis of the upper adjustment roller 112 and the rotation axis of the lower adjustment roller 114, the link link 124 for maintaining a predetermined distance therebetween, and one end A transmission link 125 rotatably connected to one end of the rotation shaft of the lower adjustment roller 114 or the connection link 124 and an adjustment block 128 one end of which is pivotally connected to the other end of the transmission link 125. . The adjusting block includes a first member 128a and a second member 128b, one end of which is connected to the other end of the first member 128a, and the second member 128b has an upper end of the casting beam lower beam. The mounting bar 310 mounted on the insert groove 129a is formed to be fastened at the other end. At this time, the liner 129b may be provided inside the insertion groove 129a as in the conventional method.

Protrusion coupling holes 123b are formed at the other end of the first member 128a and one end of the second member 128b, respectively, and the rotating body 121 is coupled through these coupling holes 123b. A protrusion 123a is formed at one end side outer circumferential surface of the rotating body 121 to be coupled to the coupling hole 123b. In addition, the other end of the rotating body 121 is rotatably coupled to the lower portion of the guide groove 106 of the lower beam 104, the rotating body 121 is made of a general bearing coupling method that is rotated about the cylindrical shaft. . Accordingly, the first member 128a and the second member 128b are integrally coupled by the coupling of the coupling hole 123b and the protrusion 123a to rotate about the rotating body 121. In this case, the first member 128a and the second member 128b may be connected to each other at a desired angle by the protrusion coupling.

In addition, in FIG. 5, the adjustment roller unit and the step correction unit are coupled to only one rotation shaft of the upper adjustment roller 112 and the lower adjustment roller 114, but this is only to more clearly show the drawings, The adjustment roller unit and the step correction unit, such as are combined.

6 is a plan view showing a case where the step correction unit of the continuous casting machine in which the roller step according to the present invention is adjusted is operated by the step.

The state as shown in (a) of FIG. 6 shows a state in which no step is generated between the upper segment and the casting beam, or before the cast piece moved in the upper segment is introduced into the casting beam.

If a step is generated between the casting beam and the upper segment so that the upper adjustment roller 112 and the lower adjustment roller 114 are moved downward by the cast steel, then as shown in FIG. The connecting link 124 coupled to the rotation shaft of the upper adjusting roller 112 and the lower adjusting roller 114 is also moved downward. In addition, the downward movement of the connection link 124 as described above is transmitted to the transmission link 125 coupled thereto, and the downward movement of the transmission link 125 is coupled to the first member 128a and the second body integrally therewith. The member 128b is rotated about the rotating body 121. As a result, the second member 128b is rotated upward, and as the lifting bar coupled to the second member 128b is lifted, the upper segment is slightly moved upward to reduce the step with the casting beam.

The reason why the control block is separated into the first member 128a and the second member 128b as described above and combined with the protrusion of the rotating body as described above, is to adjust the mutual coupling angle about the rotation axis. To do this. As such, when the first member 128a and the second member 128b are separated and configured, the moving bar that lifts the seat bar by adjusting the engagement angle between the first member 128a and the second member 128b and fitting them to the protrusions. You can adjust it accordingly.

In addition, the length of the transmission link may be configured to be adjustable by another method of adjusting the rotation angle of the second member 128b. The second member 128b may be adjusted by adjusting the length of the transmission link as described above. You can also adjust the angle of rotation.

As described above, the continuous casting machine in which the roller step is adjusted according to the present invention senses the pressure applied from the cast steel according to the step generation by the vertical movement of the adjusting roller part, and the detected step is transferred to the link provided in the step correction part and automatically. Can be corrected.

As mentioned above, although this invention was demonstrated in detail through the preferable Example, the scope of the present invention is not limited to a specific Example, Comprising: It should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The continuous casting machine in which the roller step is adjusted according to the present invention can automatically detect and adjust the step between the upper segment and the casting beam according to the pressure of the cast steel moved between the rollers at the same time as the continuous casting operation, before the start of the continuous casting process or Even if there is a step between the upper segment and the casting beam after the start, it is not necessary to recalibrate it. Also, the error caused by various factors such as the local temperature rise of the cast and the pressure of the molten steel inside the cast is naturally The advantage is that it can be erased.

Claims (10)

A plurality of rollers are arranged to face each other, the upper segment including an upper beam and a lower beam rotatably mounted, and a cast beam coupled to an adjusting block provided at the lower end of the lower beam to be processed from the upper segment. A continuous casting machine comprising a casting beam having an upper beam and a casting beam lower beam, At least one pair of upper and lower adjusting rollers rotatably mounted side by side with the roller at lower and upper ends of the upper and lower beams so as to be movable upward and downward in a direction facing each other; A connection link coupled between the rotary shafts of the upper and lower adjustment rollers, a transmission link of which one end is rotatably connected to the rotary shaft of the lower adjustment roller or one end of the connection link, and one end of which is rotatable with the other end of the transmission link. A step correction part including an insertion groove which is connected and is formed to be fastened at the other end of the mounting bar formed at the upper end of the casting beam lower beam, and includes an adjustment block rotatably mounted on one side of the lower beam; Continuous caster is adjusted roller step comprising a. The method according to claim 1, The adjustment block is coupled to the inner surface of the insertion groove continuous caster is adjusted roller step comprising a liner in contact with both ends of the rotating shaft of the seating bar. The method according to claim 1 or 2, The adjusting roller part includes a moving block rotatably coupled to both ends of rotation shafts of the upper adjusting roller and the lower adjusting roller, respectively, and a guide groove formed at one side of the upper beam and the lower beam to guide the movement of the moving block. Continuous casting machine that the roller step including the one is adjusted. The method of claim 3, The moving block is formed in the through groove penetrating the upper and lower ends, the bottom of the guide groove is continuous casting machine, the roller step including the one end of the guide bolt inserted into the through groove is coupled. The method according to claim 4, Continuous roller casting step of adjusting the roller step comprising the first elastic means is installed between the other end of the guide bolt and the movable block. The method of claim 3, And a roller step including a second elastic means installed between the bottom surface of the guide groove and the movable block facing the guide groove. delete The method according to claim 1, The transfer link is a continuous casting machine of the roller step is adjusted to include an adjustable length. The method according to claim 1, The adjusting block may include a second member having the insertion groove portion and a first member rotatably connected to the transfer link, and the first and second members may have a roller step coupled to be rotatable at a predetermined angle. Continuous casting machine regulated. The method according to claim 9, A coupling hole having protrusions formed on an inner circumferential surface of the same shape as penetrating through the first and second members, and including a rotating body having protrusions that penetrate the coupling hole and align with the protrusions on an outer circumferential surface thereof, Continuous casting machine with a roller step is adjusted to include rotatably mounted on one side of the bottom of the beam.

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