JP5479237B2 - Slab cutting equipment and continuous casting equipment - Google Patents

Description

  The present invention relates to a slab cutting device and continuous casting equipment. More specifically, the present invention relates to a slab cutting device for cutting a slab drawn from a continuous casting facility to a desired length, and a continuous casting facility including the slab cutting device.

Billet casting in a continuous casting facility performs high-speed casting from the viewpoint of productivity, cooling performance, and the like. Therefore, cutting of a continuous cast piece is performed with a so-called hydraulic shear by cutting with a saddle-shaped blade by hydraulic drive.
There are two types of hydraulic shears: diagonal and vertical. In the diagonal type, a hydraulic shear is installed obliquely with respect to a vertical line, and a rectangular slab is cut diagonally with a V-shaped upper blade and lower blade (see Patent Document 1). In the vertical type, the upper blade and the lower blade of the flat blade are arranged vertically, and the square slab is cut into a guillotine type (see Patent Document 2).

Japanese Patent No. 4369304 JP 2005-193290 A

However, since the cutting with the hydraulic shear is pushed by the blade, lateral swell occurs on the side surface of the slab. That is, taking the case of a vertical hydraulic shear as an example, in FIG. 9, C is a slab, and as shown in FIG. As shown in FIG. (B), lateral bulges b and b occur on both upper sides in the cross section where the upper blade hits. Each lateral expansion b has a height h of about 20 mm and a width w of about 6 to 10 mm.
When such a lateral expansion b occurs in the slab C, problems such as difficulty in tightly transporting the slab on the transport table or occurrence of poor biting in the rolling line occur. descend.

  In view of the above circumstances, an object of the present invention is to provide a slab cutting device that does not cause lateral expansion on the side surface of the slab during cutting, and a continuous casting facility including the slab cutting device.

The slab cutting device according to the first aspect of the present invention is a slab cutting device for cutting a slab into a predetermined length, comprising a regulating means that contacts a side surface of the slab and suppresses lateral expansion of the slab. Features.
The slab cutting device according to a second aspect of the present invention is the slab cutting device according to the first aspect, wherein the regulating means includes a pair of regulating members in contact with both side surfaces of the slab, and an interval adjusting mechanism for adjusting an interval between the pair of regulating members. It is characterized by providing.
The slab cutting device according to a third aspect of the invention is characterized in that, in the second aspect of the invention, the slab cutting device includes guide means for guiding the slab between the pair of regulating members.
The slab cutting device according to a fourth aspect of the present invention is the slab cutting device according to the second or third aspect, wherein the slab cutting device includes a movable blade, the regulating means is disposed on the movable blade side, and a pair of the regulating means. It is characterized by comprising release means for bringing the contact surface of the regulating member with the slab closer to and away from the slab and releasing the contact with the slab.
The slab cutting device according to a fifth aspect of the present invention is the slab cutting device according to the fourth aspect, wherein the release means is at a speed faster than the adjustment speed of the spacing adjustment mechanism, and the distance between the contact surfaces of the pair of regulation members of the regulation means with the slab. It is characterized by adjusting.
The slab cutting device according to a sixth aspect of the present invention is the slab cutting device according to the fourth or fifth aspect, wherein the slab cutting device includes a movable blade and a fixed blade, and the regulating means is provided on each of the movable blade side and the fixed blade side. Is arranged, and the release means is provided in the restricting means arranged on the movable blade side.
According to a seventh aspect of the present invention, there is provided a continuous casting facility comprising the slab cutting device according to the first, second, third, fourth, fifth or sixth aspect.

According to the first invention, when the slab is cut, lateral bulge is likely to occur at the side of the cross section of the slab where the blade first contacts, but the regulating means is in contact with the side surface of the slab. Occurrence of lateral swelling is suppressed. For this reason, since the cross-sectional shape of the cut slab is maintained, it becomes possible to carry out tight conveyance on the conveyance table, and no biting occurs in the rolling line, and productivity can be increased.
According to the second aspect of the invention, the distance between the pair of regulating members can be changed by the distance adjusting mechanism, so that it is possible to cope with a change in the cross-sectional dimension of the slab. Further, since the interval can be finely adjusted, lateral swelling can be effectively prevented.
According to the third invention, since the guide means guides the slab between the pair of regulating members, the slab can be smoothly introduced without causing any collision.
According to the fourth aspect of the present invention, the contact surface of the regulating means arranged on the movable blade side advances to a position where it comes into contact with both side surfaces of the slab during the cutting operation, and the lateral swell of the slab during cutting is caused by the release means. It fulfills its original function of preventing. When the movable blade is retracted, the movable blade is moved away from both side surfaces of the slab, and contact with the slab is released so that the slab is not moved by the movement of the movable blade. For this reason, it can move to the transfer operation | movement after slab cutting | disconnection immediately, and productivity improves.
According to the fifth invention, since the slab proceeds at a high speed, the cutting must be performed at a high speed, and the adjustment of the distance between the contact surface with the slab must be fast, but the release means is the distance adjustment. Since the adjustment is performed at a speed higher than the adjustment speed of the mechanism, it is suitable for such an operation.
According to the sixth aspect of the present invention, the contact surface of the regulating means arranged on the movable blade side advances to a position where it comes into contact with both side surfaces of the slab during the cutting operation by the release means, and the lateral swell of the slab during cutting is prevented. It fulfills its original function of preventing. And at the time of retraction | saving operation | movement of a movable blade, it can space apart from the both sides | surfaces of a slab, the contact with a slab is released, and it can prevent a slab from moving with the movement of a movable blade. For this reason, it can move to the transfer operation | movement after slab cutting | disconnection immediately, and productivity improves.
According to the seventh aspect, since the cross-sectional shape of the cut slab is maintained, it becomes possible to carry out tight conveyance on the conveyance table, and the biting in the rolling line does not occur, and the productivity can be increased.

It is a principal part side view of the slab cutting device which concerns on one Embodiment of this invention. It is the II-II arrow top view of FIG. FIG. 3 is a front view taken along line III-III in FIG. 2. FIG. 4 is a rear view taken along line IV-IV in FIG. 2. It is state explanatory drawing at the time of cutting operation of a movable side regulation block. It is state explanatory drawing at the time of retracting operation of a movable side control block. It is explanatory drawing of the continuous casting installation which provided the slab cutting apparatus which concerns on this invention. It is explanatory drawing of the basic structure of a slab cutting apparatus, (A) is a front view, (B) is a side view. It is explanatory drawing of the lateral swelling which arises at the time of the cutting | disconnection of a square slab.

Next, an embodiment of the present invention will be described with reference to the drawings.
First, the whole structure of the continuous casting equipment X provided with the slab cutting device according to the present invention will be described.
As shown in FIG. 7, molten steel is stored in the ladle 1, and molten steel is supplied to each mold 3 from a plurality of tundish nozzles formed at the bottom of the tundish 2 connected to the lower portion of the ladle 1. Inflow. Molten steel is cooled while moving the roll guide portion 4 and formed into a slab C having a square cross section. The slab C moves on the table 5, is cut into a predetermined length by the slab cutting device A, and is drawn out. The length of the slab C is detected by the measuring roll 6, and a cutting command is issued to the slab cutting device A every predetermined length.

  FIG. 8 shows the basic structure of the slab cutting device. The slab cutting device includes a fixed portion 11 provided at a lower portion of the frame 10 and a movable portion 12 that moves up and down in the frame 10. A hydraulic cylinder 13 is provided on the upper portion of the frame 10. The movable portion 12 is connected to a rod 13 a of the hydraulic cylinder 13 and is moved up and down by the operation of the hydraulic cylinder 13.

In the fixed portion 11, a lower blade 21 is attached to the downstream surface of the pass line P through which the slab C passes, and the blade edge is located on the upper surface of the fixed portion 11. The lower blade 21 is located below the pass line P and is fixed so as not to move up and down. An upper blade 22 is attached to the surface of the movable portion 12 on the upstream side of the pass line P, and the blade edge is located on the bottom surface of the movable portion 12. The upper blade 22 moves up and down so as to cross the pass line P in the vertical direction as the movable unit 12 moves up and down. That is, in the slab cutting device, the lower blade 21 is a fixed blade, and the upper blade 22 is a movable blade.
When the upper blade 22 is lowered, the slab C passing through the pass line P can be cut to a predetermined length by the lower blade 21 and the upper blade 22.

(First embodiment)
Next, a slab cutting device A according to an embodiment of the present invention will be described.
The slab cutting device A is obtained by attaching the following restriction block to the basic structure of the slab cutting device shown in FIG.
In the slab cutting device A, a fixed side restriction block 30 is disposed on the lower blade 21 side which is a fixed blade, and a movable side restriction block 40 is disposed on the upper blade 22 side which is a movable blade.
The fixed side restriction block 30 and the movable side restriction block 40 correspond to “restricting means” described in the claims.

As shown in FIGS. 1, 2, and 3, a fixed-side regulating block 30 is disposed on the fixed portion 11 to which the lower blade 21 is attached. The fixed side restriction block 30 includes a fixed side right block 31 and a fixed side left block 32 that are substantially rectangular parallelepiped. The fixed side right block 31 is on the right side in the direction of travel of the pass line P, and the fixed side left block 32 is on the path line P. Located on the left side of the direction. The fixed side right block 31 and the fixed side left block 32 are located on the upper surface of the fixed portion 11, and the downstream side surface of the pass line P is located at the same position as the cutting edge of the lower blade 21 or slightly upstream. .
The fixed-side right block 31 and the fixed-side left block 32 correspond to “regulating members” described in the claims.

  A right slide portion 33 and a left slide portion 34 project from the bottom surfaces of the fixed side right block 31 and the fixed side left block 32, respectively. On the other hand, grooves 11a and 11b perpendicular to the pass line P are formed on the left and right sides of the upper surface of the fixed portion 11, and the slide portions 33 and 34 are fitted in the grooves 11a and 11b. Rollers are incorporated in the bottom and side surfaces of the grooves 11a and 11b, and the slide portions 33 and 34 are movable in the grooves 11a and 11b.

  In addition, screw holes are formed in the slide portions 33 and 34, and the fixed-side right block 31 and the fixed-side left block 32 are connected by screwing one screw shaft 35 into these screw holes. Has been. One of the screw shafts 35 is a right-hand thread and the other is a left-hand thread with respect to the center. Therefore, if the screw shaft 35 is turned to one side, the interval between the fixed-side right block 31 and the fixed-side left block 32 is reduced, and if the screw shaft 35 is turned to the other side, the interval is increased.

The screw shaft 35 is pivotally supported on the fixed portion 11 via a bearing or the like, and an electric motor 36 that rotates the screw shaft 35 forward and backward is connected to one end thereof. The electric motor 36 is attached to the frame 10.
Further, since the screw shaft 35 is passed through the hole 11c formed in the fixed portion 11 and communicating with the grooves 11a and 11b on both sides, the heat of the slab C passing through the upper surface of the fixed portion 11 and the like. It is less affected.

  Since the configuration is as described above, the fixed-side right block 31 and the fixed-side left block 32 can be moved closer to and away from the pass line P by rotating the screw shaft 35 forward and backward. Accordingly, the distance between the surfaces (contact surfaces 31t, 32t) facing the pass lines P of both the fixed-side right block 31 and the fixed-side left block 32 is adjusted, and at the position where it contacts the both side surfaces Cs, Cs of the slab C. Can be fixed. That is, the distance between the fixed-side right block 31 and the fixed-side left block 32 can be adjusted according to the width dimension of the slab C.

In addition, as long as the screw shaft 35 can be rotated forward / reversely, a hydraulic motor or a manual handle may be connected instead of the electric motor 36.
The slide portions 33 and 34, the screw shaft 35, and the electric motor 36 correspond to an “interval adjustment mechanism” described in the claims. The interval adjusting mechanism only needs to adjust the interval between the fixed right block 31 and the fixed left block 32, and may be realized by a mechanism such as a link mechanism instead of the above mechanism.

A pair of guide rollers 37, 37 for guiding the introduction of the slab C to the corner on the upstream side of the pass line P is attached to the fixed side right block 31 and the fixed side left block 32. Since the guide rollers 37 and 37 are in contact with the side surface Cs of the slab C while rotating, even if the slab C is bent or meandered in the width direction, the fixed side right block 31 and the fixed side left block 32 They can be guided smoothly, positioned, and smoothly introduced without hitting the fixed-side regulating block 30.
The guide rollers 37 and 37 correspond to “guide means” recited in the claims.

As shown in FIGS. 1, 2, and 4, a movable side restriction block 40 is disposed on the movable portion 12 to which the upper blade 22 is attached. The movable side restricting block 40 is composed of a substantially rectangular parallelepiped movable right block 41 and a movable left block 42. The movable right block 41 is on the right side in the direction of travel of the pass line P, and the movable left block 42 is traveled on the pass line P. Located on the left side of the direction. The movable side right block 41 and the movable side left block 42 are located on the bottom surface of the movable part 12, and the surface on the upstream side of the pass line P is located at the same position as the cutting edge of the upper blade 22 or slightly downstream. .
The movable side right block 41 and the movable side left block 42 correspond to a “regulating member” described in the claims.

  A right slide portion 43 and a left slide portion 44 project from the upper surfaces of the movable right block 41 and the movable left block 42, respectively. On the other hand, grooves 12a and 12b perpendicular to the pass line P are formed on the left and right sides of the bottom surface of the movable portion 12, and the slide portions 43 and 44 are fitted in the grooves 12a and 12b. Rollers are incorporated on the upper and side surfaces of the grooves 12a and 12b, and the slide portions 43 and 44 are movable within the grooves 12a and 12b.

  Further, screw holes are formed in the slide portions 43 and 44, and a single screw shaft 45 is screwed into these screw holes, whereby the movable side right block 41 and the movable side left block 42 are connected. Has been. One of the screw shafts 45 is a right-hand thread and the other is a left-hand thread with respect to the center. Therefore, when the screw shaft 45 is turned to one side, the distance between the movable side right block 41 and the movable side left block 42 is narrowed, and when the screw shaft 45 is turned to the other side, the distance is widened.

The screw shaft 45 is pivotally supported on the movable portion 12 via a bearing or the like, and an electric motor 46 that rotates the screw shaft 45 forward and backward is connected to one end thereof. The electric motor 46 is attached to the movable part 12.
Further, since the screw shaft 45 is passed through the hole 12c formed in the movable portion 12 and communicating with the grooves 12a and 12b on both sides, the heat of the slab C contacting the bottom surface of the movable portion 12 and the like. It is less affected.

  Since the configuration is as described above, the movable-side right block 41 and the movable-side left block 42 can be moved closer to and away from the pass line P by rotating the screw shaft 45 forward and backward. Therefore, the distance between the surfaces (contact surfaces 41t, 42t) facing the pass lines P of both the movable side right block 41 and the movable side left block 42 is adjusted, and at the position where it contacts the both side surfaces Cs, Cs of the slab C. Can be fixed. That is, the distance between the movable right block 41 and the movable left block 42 can be adjusted according to the width of the slab C.

In addition, as long as the screw shaft 45 can be rotated forward / reversely, a hydraulic motor or a handwheel handle may be connected instead of the electric motor 46.
The slide parts 43 and 44, the screw shaft 45, and the electric motor 46 correspond to an “interval adjustment mechanism” described in the claims. The interval adjusting mechanism only needs to adjust the interval between the movable right block 41 and the movable left block 42, and may be realized by a mechanism such as a link mechanism instead of the above mechanism.

  Contact surfaces 41t and 42t of the movable side right block 41 and the movable side left block 42 to the slab C are pressure contact pads 47 and 47, respectively. The pressure contact pads 47, 47 approach and separate from the side surface Cs of the slab C by supplying and discharging pressure oil to and from the oil chamber provided between the movable right block 41 or the movable left block 42. Can be done.

Pressure oil is supplied / discharged by connecting the movable side right block 41 and the movable side left block 42 to a hydraulic source such as a pump or an accumulator via a hose or the like and a tank, and controlling the supply and discharge of the pressure oil in the middle. Should be attached. FIG. 5 shows a state in which the pressure contact pad 47 protrudes, and FIG. 6 shows a state in which the pressure contact pad 47 is retracted.
The pressure-contact pads 47 and 47 and the hydraulic circuit thereof correspond to “release means” described in the claims.

Next, the cutting operation of the slab cutting device A will be described.
First, the distance between the contact surfaces 31t and 32t of the fixed side right block 31 and the fixed side left block 32 is adjusted and fixed at a position where it contacts the both side surfaces Cs and Cs of the slab C. Similarly, the distance between the contact surfaces 41t and 42t of the movable side right block 41 and the movable side left block 42 (the distance between the pressure contact pads 47 and 47) is adjusted and fixed at a position where it contacts the both side surfaces Cs and Cs of the slab C. . At this time, the pressure contact pad 47 is supplied with pressure oil so as to be close to the side surface Cs of the slab C.

  The distance between the contact surfaces 31t and 32t of the fixed side right block 31 and the fixed side left block 32 and the distance between the contact surfaces 41t and 42t of the movable side right block 41 and the movable side left block 42 are the width of the slab C. It is preferable to set with a slight gap from the dimension. This is because the slight gap allows the slab C to smoothly travel along the pass line P without generating resistance between the slab C and the contact surfaces 31t, 32t, 41t, 42t. Further, if this slight gap is provided, even if there is some variation in the width dimension of the slab C, all the slabs C do not receive resistance from the contact surfaces 31t, 32t, 41t, 42t. Can proceed along P.

  When the slab C is supplied to the pass line P, the slab C is guided and positioned between the fixed-side right block 31 and the fixed-side left block 32 by the guide rollers 37, 37, and its both side surfaces Cs, Cs. Is passed in contact with the contact surfaces 31t, 32t.

In response to a cutting command from the measuring roll 6, the hydraulic cylinder 13 is operated and the movable portion 12 is lowered. Then, as shown in FIG. 5, the slab C is cut by the lower blade 21 and the upper blade 22 after the slab C is sandwiched between the movable right block 41 and the movable left block 42.
At the time of this cutting, a lateral bulge b tends to occur at the upper both sides of the slab C cross section where the upper blade 22 first contacts and at the lower both sides of the slab C cross section where the lower blade 21 first contacts. However, since the fixed side restriction block 30 and the movable side restriction block 40 are in contact with both side surfaces Cs and Cs of the slab C, the occurrence of lateral swelling b is suppressed. For this reason, since the front end cross-section and the rear end cross-section of the cut slab C are kept in a square shape, it is possible to closely convey on the conveyance table, and the biting in the rolling line does not occur, and the productivity is increased. be able to.
In the case where a slight gap is provided between the slab C and each of the contact surfaces 31t, 32t, 41t, and 42t, the lateral bulge b is generated by the gap, but this does not cause a problem in a later process. It can be minimized to the extent.

After cutting, the movable portion 12 is raised by the operation of the hydraulic cylinder 13. At this time, since the slab C is sandwiched between the movable side right block 41 and the movable side left block 42, if the movable part 12 is lifted as it is, the slab C may move and rise.
Therefore, as shown in FIG. 6, when the movable portion 12 reaches the lower limit, the pressure oil is discharged from the pressure contact pad 47, separated from the side surface Cs of the slab C, and the contact with the slab C is released. To do. Thereby, it is possible to prevent the slab C from being moved when the movable blade 22 is retracted, and it is possible to immediately move to a transfer operation after cutting the slab C, thereby improving productivity.
In addition to the method of forcibly discharging the pressure oil from the pressure contact pad 47 and separating the pressure oil from the side surface Cs of the slab C, the method of stopping the supply of the pressure oil so that the pressure oil can be discharged, Since the force which pinches the slab C is lost, the slab C can be prevented from moving during the retraction operation.

  After raising the movable part 12, pressure oil is again supplied to the pressure contact pad 47 to prepare for the next cutting. Thus, the cutting operation is completed.

  Since the slab C advances at a high speed, the cutting must be performed at a high speed, and the speed of the approaching / separating operation of the pressure contact pads 47, 47 must also be high. Since the pressure contact pad 47 is operated by hydraulic pressure, the operation is faster than a case where it is operated by a screw shaft or the like, which is suitable for such an operation.

  When cutting the slab C having different cross-sectional dimensions, the motors 36 and 46 are operated, the distance between the contact surfaces 31t and 32t of the fixed side right block 31 and the fixed side left block 32, and the movable side right block 41 and The distance between the contact surfaces 41t and 42t of the movable left block 42 is changed. Since the interval is changed by the electric motors 36 and 46, it is possible to cope with a change in the cross-sectional dimension of the slab C. Further, since the interval can be finely adjusted, the lateral swelling b can be effectively suppressed.

(Other embodiments)
The present invention is not limited to the above embodiment, and various modifications can be made.
In the said embodiment, although the slab C was made into the square shape, another shape may be sufficient. For example, in the case of round slabs, the shapes of the contact surfaces 31t, 32t, 41t, and 42t of the blocks 31, 32, 41, and 42 may be formed in a circular arc when viewed from the front so as to match the round slabs.

In the above embodiment, the lower blade 21 is a fixed blade and the upper blade 22 is a movable blade. Alternatively, the lower blade 21 may be a movable blade and the upper blade 22 may be a fixed blade. . In this case, the movable side restriction block 40 is disposed on the lower blade 21 side, and the fixed side restriction block 30 is disposed on the upper blade 22 side.
Both the lower blade 21 and the upper blade 22 may be movable blades. In this case, the movable side restriction block 40 is arranged on both the lower blade 21 side and the upper blade 22 side.
In the above-described embodiment, the blade on the upstream side of the pass line P is the lower blade 21 and the blade on the downstream side is the upper blade 22. Instead, the blade on the upstream side is the upper blade 22 and the blade on the downstream side is used instead. It is good also as embodiment which makes lower blade 21. FIG. Also in this case, the movable-side regulating block 40 is disposed on the upper blade 22 or the lower blade 21 serving as a movable blade, or both.

Further, the upper blade and the lower blade are not arranged vertically, and the left blade and the right blade may be arranged in the horizontal direction.
Furthermore, the present invention is not limited to a vertical hydraulic shear, but can also be applied to a diagonal hydraulic shear in which a hydraulic shear is installed obliquely with respect to a vertical line. Although the diagonal type hydraulic shear has a smaller lateral expansion than the vertical hydraulic shear when the slab C is cut, the lateral expansion can be more effectively suppressed by providing a restricting means for suppressing the lateral expansion. In addition, since the length from the mold to the cutting position is the same for each strand and the slab temperature at the cutting position is the same, the vertical hydraulic shear can maintain a uniform cutting shape as compared to the diagonal hydraulic shear.

  Moreover, in the said embodiment, although the control blocks 30 and 40 were comprised with the substantially rectangular parallelepiped blocks 31, 32, 41, and 42, it may replace with this and may comprise it with an L-shaped or plate-shaped member. In short, any member can be used as long as it can contact the side surface Cs of the slab C and suppress lateral expansion.

  In the above embodiment, the pair of guide rollers 37 and 37 are attached to the fixed side blocks 31 and 32. However, instead of the guide rollers 37 and 37, an arc bent plate or the downstream side of the pass line P is used. Therefore, other guide means such as a block member having an opening having a narrow width may be provided. The guide means may be provided as a separate member on the upstream side of the pass line P from the fixed blocks 31 and 32 in addition to the fixed blocks 31 and 32.

X continuous casting equipment A slab cutting device C slab 11 fixed part 12 movable part 13 hydraulic cylinder 21 lower blade 22 upper blade 30 fixed side restriction block 31 fixed side right block 32 fixed side left block 33 right slide part 34 left slide part 35 Screw shaft 36 Electric motor 37 Guide roller 40 Movable side restriction block 41 Movable side right block 42 Movable side left block 43 Right slide part 44 Left slide part 45 Screw shaft 46 Electric motor 47 Pressure contact pad

Claims (7)

A slab cutting device for cutting a slab into a predetermined length,
A slab cutting device comprising a regulating means that contacts a side surface of the slab and suppresses lateral expansion of the slab. The restricting means comprises a pair of restricting members that contact both side surfaces of the slab,
The slab cutting device according to claim 1, further comprising an interval adjusting mechanism that adjusts an interval between the pair of regulating members. The slab cutting device according to claim 2, further comprising guide means for guiding the slab between the pair of regulating members. The slab cutting device includes a movable blade,
The restricting means is disposed on the movable blade side,
4. The casting according to claim 2, further comprising release means for releasing the contact with the slab by bringing a contact surface of the regulating means with the slab of the pair of regulating members closer to and away from the slab. Single cutting device. The said releasing means adjusts the space | interval of the contact surface with the slab of a pair of control member of the said control means at a speed faster than the adjustment speed of the said space | interval adjustment mechanism. Slab cutting equipment. The slab cutting device includes a movable blade and a fixed blade,
The regulating means is arranged on each of the movable blade side and the fixed blade side,
The slab cutting device according to claim 4 or 5, wherein the release means is provided in a regulating means arranged on the movable blade side. A continuous casting facility comprising the slab cutting device according to claim 1, 2, 3, 4, 5 or 6.

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