KR101321847B1 - Secondary unit for cutting steel plate and Apparatus for cutting steel plate comprising it and Cutting method - Google Patents

Abstract

The present invention relates to an apparatus and a method for cutting a slab, the second cutting operation of the cast or when cutting the head head crop 31, the support unit for switching between the horizontal state and vertical state and supporting the lower surface of the cast, and the There is provided a slab cutting device and method comprising a slab cutting auxiliary unit composed of a support guide portion for guiding the support portion to be switched to a horizontal state or a vertical state.
As a result, it is possible to prevent grid damage of the slab cutting device, and to prevent the melt generated during the slab cutting from being fused and grown, thereby preventing scratches, scratches, and other quality defects on the lower surface of the slab. have.

Description

Auxiliary unit for cutting steel plate and Apparatus for cutting steel plate comprising it and Cutting method}

The present invention relates to a slab cutting auxiliary unit, a slab cutting device including the same, and a slab cutting method, and more particularly, to a slab cutting auxiliary unit used to cut a head crop of a drawn slab in a continuous casting process. It relates to a slab cutting device and a cutting method using the same.

In general, the continuous casting process is performed by injecting molten steel manufactured in an electric furnace or a refining furnace into a ladle, injecting molten steel into a tundish, and supplying molten steel to a mold through a immersion nozzle of the tundish. . At this time, the dummy bar head is inserted into the bottom surface of the mold and sealed to draw the cast steel. In the initial stage of the casting process, the dummy bar is drawn and the pull of the cast steel meshed with the head gutter is induced. When the cast of the desired length is drawn, the dummy bar is separated from the cast, and the head crop is formed in a shape that protrudes from the center portion of the cast separated from the dummy bar. This cast is then cut to an appropriate length to meet the needs of the consumer. In particular, the head crops protruding from the cast pieces should be cut.

A conventional head crop cutting process will be described with reference to FIG. 1. Cutting machine unit 10 for cutting the slab includes a sensor and a burner (50). The cutting length (or cutting position) at which the slab 30 extending in the longitudinal direction is cut may be set by the operator, and the set length may be recognized by a detection sensor of the cutting machine unit 10. When the cast steel is injected into the cutting device to the set position, the burner 50 provided on both side surfaces of the cutting machine 10 travels inward and performs the first cutting operation. The burners 50 on both sides advance inward in the width direction of the cast steel, and then interrupt the primary cutting operation leaving a predetermined area in the width of the cast steel. At this time, the predetermined area is a length, for example, about 110 ~ 140mm that the slabs to be cut are connected to each other. In addition, when both burners 50 meet, the burner 50 on one side returns to the home position, and the burner 50 on the other side stops the cutting operation for a while and waits. Subsequently, the shifting table 60 is moved to the run-out roll 21 side so that the floating grid 41 is inserted into the fixed grid 42, and the cutting machine 10 has the same speed as the moving speed of the slab 30. Is moved to. Thereafter, when the cast steel 30 is adjacent to the run-out roll 21, the cutting operation is re-executed by the burner 50 waiting, and the secondary cutting operation for cutting the remaining portion of the remaining cast steel 30 after the first cutting operation. This is done. When the cutting is completed, the cut slab, ie, the head crop region, as shown in FIG. 70) Seated on the top.

According to the cutting process, as shown in FIG. 2, when the second cutting operation is performed on the upper surfaces of the grids 41 and 42, the surface of the grids 41 and 42 is cut and deformed by the burner flame. In addition, the melt generated during cutting is fused and grown on the grids 41 and 42, causing a problem of contaminating the grid. While the slabs cut therefrom pass through the contaminated grids 41 and 42, there is a problem that scratches, scratches, and other quality defects occur on the lower surface of the slabs.

Korean Laid-Open Patent 2006-0054948

The present invention provides a slab cutting device and method that can prevent thermal deformation or damage of the region where the slab is supported.

The present invention provides a slab cutting device and method that can suppress the occurrence of quality defects such as scratches in a slab to be cut.

       Cast slab auxiliary unit according to an embodiment of the present invention,

It is possible to switch between a horizontal state and a vertical state and a support portion for supporting the lower surface of the cast when cutting the cast piece, and a support guide portion for guiding the support portion to be switched to a horizontal or vertical state.

The support portion includes an arm having a pair of cast iron support bars formed in parallel to each other and an arm clamping rod formed between the cast iron support bars, and a rod, one end of which is fastened to the arm clamping rod and induces a folding motion of the arm. Include. When two or more arms are provided, the two or more arms are connected by an arm connecting rod.

The rod includes an elastic member and sub-rods coupled to both ends of the elastic member and having fastening holes formed at ends thereof.

The support guide part includes a shaft connected to the support part and extending in a vertical direction, a housing through which the shaft penetrates up and down and a cylinder for vertically moving the housing.

The shaft includes a shaft head engaged with the arm of the support portion, and a shaft body positioned below the shaft head and penetrating the housing.

The housing has a first connection member coupled to the rod of the support part at one side, and a second connection member connected to the cylinder at the other side thereof. A stopper is formed on the upper portion of the first connection member to limit the moving range of the rod.

A bellows is located below the housing, and is formed in a pleated shape to allow compression extension. In addition, a bracket protruding in the horizontal direction from the housing and a sensor for detecting the position of the bracket.

The support portion includes a cast iron support bar for supporting a lower surface of the cast steel, and the support guide portion includes a driving motor connected to one end of the cast steel support bar to rotate the cast steel support bar.

Cast steel cutting device including a cast steel cutting auxiliary unit according to an embodiment of the present invention,

A roller unit having a plurality of rolls for moving the cast piece by rotation; A cutting machine unit which is movable at a moving speed of the cast steel and at least a portion thereof is positioned at an upper end of the cut portion of the cast steel to cut the cast steel; A discharge part through which a part of the slab cut by the cutting machine part is discharged; And a cast-cutting auxiliary unit positioned between the roller part and the discharge part and having a support part for supporting the lower surface of the cast piece and a support guide part for guiding the support part to be switched to a horizontal state or a vertical state. do.

The roller portion has a run out roll positioned adjacent to the discharge portion, and the slab cutting auxiliary unit is located in the central region in the longitudinal direction of the run out roll.

The slab cutting auxiliary unit may be provided in plural along the extending direction of the roller.

In addition, the slab cutting device includes an operation detection sensor for detecting the slab, and a controller for receiving the detection signal from the operation detection sensor to control the operation of the slab cutting auxiliary unit.

Cast steel cutting method according to an embodiment of the present invention,

The process of preparing cast pieces; Primary cutting the cast piece in the width direction while moving the cast piece; Stopping the first cut while leaving a remainder having a predetermined width in the slab width direction; Supporting the cast steel by converting the support portion of the cast steel cutting auxiliary unit into a horizontal state; And secondly cutting the remaining portion of the cast steel. After the slab is first cut, the slab is moved to the cutting auxiliary unit, and the moved slab is sensed. When the secondary cutting of the slab is completed, the support part of the slab cutting auxiliary unit is switched to the vertical state. The head crop of the cast is also removed by the slab cutting method.

The slab cutting device and method according to the embodiment of the present invention can prevent the grid of the slab cutting device from being thermally deformed or damaged by using a slab cutting auxiliary unit that assists secondary cutting operations of the slab.

In addition, the melt generated during cutting of the slab is prevented from being fused, grown on the grid, and now being made, so that the scratched scratch, scratches, and other quality defects are generated on the lower surface while the cutting slab passes through the grid. Can be.

The slab cutting device and the method according to the embodiment of the present invention use the slab cutting auxiliary unit by protruding and expanding when cutting the head crop of the ultra slab, and when cutting the normal slab, it is embedded in the cutting device. The device can be operated efficiently.

Moreover, according to embodiment of this invention, slab cutting efficiency and productivity can be improved.

1 is a schematic diagram showing a general cast cutting operation process.
2 is a side view of the cast cutting operation process showing the secondary cutting operation of the cast.
3A is in accordance with an embodiment of the present invention. It is a perspective view of a slab cutting auxiliary unit.
3B is a perspective view illustrating a support part and a shaft connected thereto of a slab cutting auxiliary unit formed of one arm according to an embodiment of the present invention.
4 is in accordance with an embodiment of the present invention. It is a side view which shows the support part of a cast cutting auxiliary unit.
5 is in accordance with an embodiment of the present invention. An arm and a rod of a slab cutting auxiliary unit are shown in perspective view.
6 is according to an embodiment of the present invention It is a side view which shows the support guide part of a cast cutting auxiliary unit.
7 is in accordance with an embodiment of the present invention. The shaft of the slab cutting auxiliary unit is shown in perspective view.
8 is according to an embodiment of the present invention The housing and bellows of the cast cutting aid unit are perspective views.
FIG. 9 is a side view of a cast cutting device including a cast cutting aid unit in which a cast cutting aid unit is used. FIG.
10 is a slab cutting device including a slab cutting assist unit, the slab cutting aid
It is a side view when a unit is not used.
11 is according to an embodiment of the present invention. It is a state diagram which shows the operating state of a cast slab auxiliary | assistant unit.

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.

3A is in accordance with an embodiment of the present invention. It is a perspective view of a slab cutting auxiliary unit.

Referring to Figure 3a, the slab cutting auxiliary unit according to an embodiment of the present invention is used during the secondary cutting operation of the slab 30 drawn in the continuous casting process and the cutting of the head crop (31). The cast cutting auxiliary unit includes a support part 100 for supporting the lower part of the cast piece 30, and a support guide part 200 for guiding the support part 100 to switch the support part 100 to a horizontal state or a vertical state. ).

The support part 100 includes a rod 110 and arms 120: 121 and 122, and the support guide part 200 is coupled to the base 210 and the base 210 by a seat fastening member. And a housing 230 through which the shaft 220 penetrates and moves up and down, a bellows 240 in which an upper end is fastened to the housing 230, and a lower end is fastened to the base 210, and an upper end of the housing 230. It includes a cylinder 250 is connected to the second connecting member 232 positioned on the rear surface and the lower end is connected to the base fastening member 211 located on the rear surface of the base 210.

In addition, when repairing and manual operation of the slab cutting auxiliary unit, it includes an operation control unit 300 for controlling the slab cutting auxiliary unit. The operation control unit 300 is composed of input means and display means. After the operation of the slab cutting auxiliary unit is stopped under the control of the operation control unit 300, the cutting situation can be visually checked and repaired. After that, the cast cutting auxiliary unit can be operated safely.

Figure 3b is a perspective view showing the support portion 100 and the shaft 220 connected to the support portion 100 of the slab cutting auxiliary unit formed of one arm 120 according to an embodiment of the present invention. Referring to FIG. 3B, the slab cutting auxiliary unit may be formed of one arm.

Hereinafter, with reference to FIGS. 3 to 8, the slab cutting assistance device and each component will be described.

Referring to FIGS. 3A and 4, the support unit 100 includes arms 120: 121 and 122 supporting the cast steel and a rod 110 for moving the arm. The arm 120 has a female fastening rod 123 formed between the pair of cast bar supporting bars 121a and 122a and the cast bar supporting bars 121a and 122a which are formed to face each other in parallel. As shown in Figure 5 (a), the cast bar support bar is formed in a plate extending in the horizontal direction is coupled to each other on one side. That is, two cast bar supporting bars are connected by connecting bars 121b and 122b at one side. The connection bars 121b and 122b are provided with a protruding portion that can be fastened to the shaft 220 to be described later. Two parallel cast iron support bar is coupled by the arm fastening rods (123). The arm fastening rods 123 extend in a rod shape and are fastened with the cast iron supporting bars at both ends, and are fastened with the rod 110 to be described later in the center. In addition, having two or more arms (120: 121, 122), the two or more arms (120: 121, 122) are connected by the arm connecting rod 124.

The rod 110 extends in a rod shape to induce a folding motion of the arm so that one end is fastened to the arm fastening rod 123 and the other end is fastened to the first connection member 231 of the housing 230. When the rod 110 is formed of two or more arms, the rod 110 may be formed of two or more numbers. FIG. 3A illustrates the case of two cancers, and FIG. 3B illustrates the case of one cancer. As shown in Figure 5, the rods 110 (111, 112) is made of a rod of a predetermined length having a circular or polygonal cross section, and fastening holes are formed at both ends. In this case, the length of the rod 110 corresponds to the gap between the arm and the housing, and is manufactured to have a length to fold the arm. In addition, the rod 110 may be formed of a fixed rod 111 (see FIG. 5 (b)) in which fastening holes are formed at both ends of the rod. The rod 110 is formed to be coupled to both ends of the elastic member 112a and the elastic member 112a. It may be formed of an adjustable rod 112 (see Fig. 5 (c)) consisting of a pair of sub-rod (112b) is formed in the fastening hole.

3A and 6, the support guide part 200 includes a base 210 formed at the bottom of the support guide part 200, a shaft 220 coupled to the base 210 by a seating fastening member, The shaft 220 penetrates and moves up and down, a bellows 240 in which an upper end is fastened to the housing 230 and a lower end is fastened to the base 210, and an upper end thereof is formed under the housing 230. 2 includes a cylinder 250 connected to the connection member 232 and a lower end connected to the base fastening member 211. The base 210 may be formed in a cylindrical or polygonal column shape, and is formed below the support guide part 200. In addition, the support guide unit 200 includes a driving motor (not shown) connected to one end of the cast bar supporting bars 121a and 122a to rotate the cast bar supporting bars 121a and 122a.

The shaft 220 includes a shaft head 221 having a shaft fastening member 223 protruding therefrom and a shaft body 222 integrally formed under the shaft head 221. The shaft body 222 has a length. It is formed in a cylindrical shape extending in the direction. In addition, it is formed in a shape penetrating the housing 230 and the lower portion of the shaft body 222 is connected to the base 210. As shown in Fig. 7, the upper portion of the shaft head 221 is formed with an extension plate 224 extending a predetermined length in the horizontal direction. The central portion of the extension plate 224 is connected to the shaft head 221 of the rectangular columnar shape extending in the vertical direction, it is connected to the shaft body 222. The shaft fastening member 223 is formed of a pair of parallel plates including fastening holes, and protrudes from both ends of the extension plate 224. The shaft fastening member 223 is fastened to the aforementioned connection bars 121b and 122b, and the arm 120 is connected to the shaft head 221 by the shaft fastening member 223 and the extension plate 224.

The housing 230 is formed in a quadrangular column shape having a through hole through which the shaft body 222 penetrates up and down. Predetermined intervals are spaced apart from the housing 230 so that the shaft head 221 is positioned, and a bellows 240 is disposed below. As shown in FIG. 8, the first connection member 231 is formed at both ends of one side of the housing 230, and the second connection member 232 is protruded from the central portion of the housing 230 at the other side. The first connection member 231 is formed of a pair of plates parallel to each other at a predetermined interval. The plate is formed in a rectangular plate shape including a fastening hole, and is connected to one end of the rod 110 described above. In addition, a stopper 233 formed at a predetermined angle is formed on the upper portion of the first connection member 231 to increase the supporting force and improve the restoring force. The stopper 223 may limit the moving range of the rod 110.

The second connection member 232 is formed of a pair of plates including fastening holes, and is connected to the cylinder 250 to be described later.

The bracket 234 protrudes in the horizontal direction of the housing 230. The bracket 234 is in contact with the sensors 400a and 400b of the slab cutting auxiliary unit, thereby controlling the vertical movement of the housing 230. The sensors 400a and 400b (see FIG. 3A) detect the position of the bracket 234 and are formed in plural in the vertical direction of the bracket.

The bellows 240 is formed in a stretchable corrugated shape. It is formed between the lower end of the housing 230 and the upper end of the base 210, and surrounds the shaft body 222 penetrating the housing 230. This is to prevent foreign matter contamination of the shaft body 222 exposed along the shanghaidong of the housing 230.

One end of the cylinder 250 is connected to the base fastening member 211, and the other end is connected to the second connection member 232 of the housing 230. Up and down movement of the housing 230 is formed by expansion and contraction of the cylinder rod 252. Vertical movement of the housing 230 induces movement of the rod 110. Arms 120 and 121 and 122 described above are guided by the rod 110 in a horizontal and vertical state.

The protective cover 500 may be formed at the rear of the shaft head 221. The protective cover 500 may be formed in various shapes such as an open shape or a closed shape at both sides thereof in an L shape. In addition, the cylinder 250 is formed in various forms in the range that does not cause interference with the contraction, expansion.

9 and 10 are side views of the slab cutting device including the slab cutting auxiliary unit. FIG. 9 is a side view showing the operation of the shifting table and the operation of the cutting aid when using the slab cutting auxiliary unit, and FIG. 10 shows the state of cutting the slab on the grid when the slab cutting auxiliary unit is not used. One side view. In addition, Figure 11 is in accordance with an embodiment of the present invention It is a state figure which shows the operation state of the cast iron cutting assistance apparatus.

9 and 10, a slab cutting device including a slab cutting auxiliary unit includes a roller portion 20 having a plurality of rolls 21, 22, and 23 for moving the slabs by rotation, A cutting machine 10 which is movable at a moving speed and at least a part of which is located at the upper end of the cutting part and cuts the slab, and a discharge part and the roller through which a part of the slab cut by the cutting machine 10 is discharged. Slab cutting auxiliary units (100, 200) positioned between the portion 20 and the discharge portion 70.

The roller portion 20 includes a plurality of rolls to move the slab 30 flowing into the cutting device. The measuring roll 22 may be installed at the inlet side into which the cast piece 30 is injected, and a plurality of rolls 23 are installed on the shifting table 60, which may move forward and backward, and the shifting table 60 may be installed. The run out roll 21 is provided spaced apart. The shifting table 60 is moved by the shifting table cylinder 80. That is, as the shifting table cylinder 80 expands, it can move toward the run out roll 21 side, and as the shifting table cylinder 80 contracts, it can move toward the measuring roll 22 side. In addition, a plurality of flowable grids 41 may protrude from one end of the shifting table 60 facing the run out roll 21. The run out roll 21 is formed adjacent to the discharge part 70, and the slab cutting auxiliary units 100 and 200 described above are installed below the run out roll 21. In addition, a plurality of fixed grids 42 may protrude from the run out roll 21 toward the flowable grid 41. When the shifting table 60 moves to the run out roll 21 side, the fluid grid 41 is inserted between the fixed grids 42.

The cutting machine 10 is used to cut the cast steel 30, and includes a burner 50 and a sensing sensor 11 for sensing the cast steel 30. The cutting machine 10 may be moved at the same speed as the speed at which the cast piece 30 moves on the roll. The burner 50 is installed on both sides of the cast steel 30 on the basis of the cast steel 30, and can move in the width direction of the cast steel 30. That is, the burner 50 cuts the slab 30 by injecting a flame while moving in the moving direction of the slab and moving across the width direction of the slab. At this time, the cutting machine 10 may be provided with a clamping means to press the upper surface of the cast steel at a predetermined pressure. The detection sensor 11 is connected to the controller 12, and detects the position of the cast steel 30 or the presence of a roll from the sensor 11, the cutting operation of the cast steel by the cutting machine unit 10 is controlled. The controller 12 is also connected to the cylinder 250 of the slab cutting auxiliary unit to control the operation of the slab cutting auxiliary unit. That is, the support unit 100 is switched to a horizontal state or a vertical state by driving the cylinder 250 of the slab cutting auxiliary unit in response to a signal from the controller.

The discharge part 70 is positioned adjacent to the run out roll 21, and the remaining part of the slab 30 cut by the cutting machine part 10 is stored. That is, the discharge part 70 is disposed outside the run-out roll 21 in the direction in which the cast piece 30 is discharged, it may be made of a crop car for seating the cut slab head crop. The remaining part of the cut piece 30 is pushed by the drawn piece, and is moved to the discharge part 70 by the run out roll 21.

The above-described slab cutting auxiliary unit is positioned between the roller part 20 and the discharge part 70, and guides the support part 100 and the support part 100 so that the lower surface of the slab 30 is supported in a horizontal state. Or it includes a support guide portion 200 to be converted to a vertical state. In addition, the slab cutting auxiliary unit is preferably located in the central region in the longitudinal direction of the run out roll (21). One piece of the slab cutting auxiliary unit may be provided, and a plurality of the slab cutting auxiliary units may be provided along the extending direction of the run out roll 21.

9, 10, and 11, the operation process and cutting method of the slab cutting device including a slab cutting auxiliary unit according to the present invention will be described.

First, the first cutting process will be described with reference to FIG. 1. At the beginning of the cutting operation, the length of the drawn cast steel 30 is measured by a measuring roll. The cutting distance to be cut by the operator is set in the controller. The introduced cast piece is moved on a roll, and the length is sensed by the sensor while the cast piece 30 moves. When the set cutting length is sensed, the clamping of the cutting machine 10 is lowered, and the upper surface of the slab 30 is pressed at a constant pressure, and the burners 50 corresponding to both sides of the cutting machine 10 move inward in the width direction of the cast steel slab 30. To cut. At this time, the cutting machine 10 moves at the same speed as the cast steel 30 is moved. That is, the cutting machine 10 is drawn to the drawing cast 30 to move, and when the flame of the burner 50 approaches the roll, a sensor (not shown) moves the rod of the shifting table cylinder 80 to shift. The cutting table 60 is moved in the forward and reverse directions to perform the first cutting operation. The primary cutting operation is stopped leaving the remainder having a predetermined width (eg, 110 mm) in the width direction of the cast steel 30. At this time, the burner 50 on one side stops the cutting operation and travels back to the home position. In the shifting table 60, the shifting table cylinder 80 is contracted to move to the roll side of the inlet side and maintain its state.

When the cutting machine unit 10 is drawn to the drawn cast piece 30 adjacent to the flowable grid 41, a sensor (not shown) senses the position of the cutting machine unit 10 and transmits a detection signal to the controller 12. do. Since the burner 50 is waiting for the secondary cutting operation. Meanwhile, before or at the same time as the secondary cutting proceeds, as shown in FIG. 9, the cylinder 250 of the slab cutting auxiliary unit is expanded and the housing 230 is raised by the control of the controller 12. As the cylinder 250 expands, the rod 110 lifts the arms 120: 121, 122 of the slab cutting auxiliary unit located below the run out roll 21 from the vertical state to the horizontal state. Accordingly, the arms 120 and 121 protrude between the shifting table 60 (see FIG. 3) and the run out roll 21 to form a horizontal state. At this time, the height of the arm is preferably formed 10mm ~ 15mm lower than the shifting table (20). At this time, in the process of raising the arms 120: 121 and 122, when the bracket 234 (see FIG. 3A) of the housing 230 touches the contact point of the sensor 400a (see FIG. 3A) positioned on the bracket, the cylinder ( The expansion of 250 is stopped. With the rise of the housing 230, the retracted bellows 240 expands and prevents foreign material contamination of the shaft 220.

The arm 120 of the slab cutting auxiliary unit (120: 121, 122) is maintained in a horizontal state while the slab 30 is moved to the upper portion of the arm, the standby burner 50 is left after the slab 30 is cut first The remaining portion of the predetermined width is cut secondarily. In addition, the secondary cutting operation is performed in the empty space formed between the parallel cast bar support bars (121a, 122a, see Figure 3a), from which the surface of the arms (120: 121, 122) to the burner 50 flame Damage, deformation or cutting can be prevented. This secondary cutting operation is mainly used for cutting the head crop 31 of the cast steel.

Referring to FIG. 10, after the secondary cutting operation or the head crop 31 of the slab 30 is thus performed, the cut piece 30 is pushed by the cast slab 30 to be drawn out of the runout roll ( 21) It is discharged to the discharge part 70 by sliding along the surface. As described above, when the second cutting operation of the cast steel or the cutting operation of the cast head cropping 31 is completed, the burner 50 moves backward to move to the home position to prepare for the next cutting operation.

In addition, under the control of the controller 12, the cylinder 250 of the slab cutting auxiliary unit is operated to pull the housing 230. When the housing 230 is lowered, the arms 120: 121 and 122 in horizontal state are switched to the vertical state by the rod 110 connected to the first connecting member (FIG. 10). In other words, the arm remains embedded in the cutting device. When the arm 120: 121, 122 descends, when the bracket 234 (see FIG. 3A) of the housing 230 touches the contact point of the sensor 400b (see FIG. 3A) positioned below the bracket, the cylinder 250 ) Contraction is stopped. Thus, the arms 120, 121 and 122 change from a horizontal state to a vertical state. In addition, as the cylinder 250 contracts, the bellows 240 contracts to expose a portion of the shaft 220, and the rod 110 forms a predetermined inclination angle and contacts the stopper 233 of the housing 230. do.

The above descriptions describe a process in which the secondary cutting operation of the cast steel 30 or the cutting of the cast head crop 31 is performed under the automatic conditions, and the input means and the display means during the repair and manual operation of the cast cutting auxiliary unit. An operation control unit 300 may be used.

On the other hand, in the above described the cutting operation of the cast head crop 31, the present invention can be applied to various cast cutting process.

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. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the present invention.

10: cutting machine unit 11: operation detection sensor
12: controller 20: roller portion
30: Cast 31: Cast head crop
40: grid 50: burner
60: shifting table 70: discharge part
100: support portion 200: support guide portion

Claims (19)

As a slab cutting auxiliary unit for cutting slabs,
A support unit which is mutually switchable between a horizontal state and a vertical state and supports the lower surface of the cast steel when the cast steel is cut; And
A support guide part for guiding the support part to be switched to a horizontal state or a vertical state
Lt; / RTI >
The support part,
An arm supporting the cast steel; And
A rod connected at one end to the arm to induce a folding motion of the arm;
Including;
The support guide part,
A shaft head protruding from an upper portion of the shaft fastening member coupled to the arm;
A housing connected to a lower portion of the shaft head and capable of vertically moving and connected to the other end of the rod;
Cast cutting auxiliary unit comprising a.
The method according to claim 1,
The support portion, an arm having a female fastening rod formed between the pair of cast bar support bar and the cast bar support formed to face in parallel,
One end is fastened to the arm fastening rod, the other end is connected to the housing, the slab cutting auxiliary unit comprising a rod for inducing a folding motion of the arm. The method according to claim 2,
And two or more arms, wherein the two or more arms are connected by an arm connecting rod. The method according to claim 2,
The rod, the slab cutting auxiliary unit including an elastic member, and a sub-rod coupled to both ends of the elastic member and the fastening hole is formed at the end.
The support guide unit according to any one of claims 1 to 4, wherein
Cast aiding unit comprising a cylinder for moving the housing up and down.
The method according to claim 5,
And a shaft body positioned below the shaft head and passing through the housing.
The method according to claim 5,
The housing is formed on one side of the first cutting member is coupled to the rod of the support portion is formed, the other side is a slab cutting auxiliary unit formed with a second connecting member connected to the cylinder.
The method of claim 7,
The upper part of the first connecting member, the slab cutting auxiliary unit is formed with a stopper for limiting the movement range of the rod.
The method according to claim 5,
And a bellows bellows shaped bellows positioned below the housing.
The method according to claim 5,
Cast supporting unit comprising a bracket protruding in the horizontal direction from the housing and a sensor for detecting the position of the bracket.
The method according to claim 1,
The arm has a plate shape extending in the horizontal direction, is formed so as to face in parallel, is connected by a connecting bar on one side, the slab cutting auxiliary unit including a cast support bar for supporting the lower surface of the cast.
A roller unit having a plurality of rolls for moving the cast piece by rotation;
A cutting machine unit which is movable at a moving speed of the cast steel and at least a portion thereof is positioned at an upper end of the cut portion of the cast steel to cut the cast steel;
A discharge part through which a part of the slab cut by the cutting machine part is discharged; And
Located between the roller portion and the discharge portion, including a support portion for supporting the lower surface of the cast piece and a support guide unit for guiding the support portion to be converted to a horizontal or vertical state,
The support part,
An arm supporting the cast steel; And
A rod connected at one end to the arm to induce a folding motion of the arm;
Including;
The support guide part,
A shaft head protruding from an upper portion of the shaft fastening member coupled to the arm;
A housing connected to a lower portion of the shaft head and capable of vertically moving and connected to the other end of the rod;
Cast steel cutting device comprising a.
The method of claim 12,
And the roller portion includes a run out roll positioned adjacent to the discharge portion, and the slab cutting auxiliary unit is located in a central region in the longitudinal direction of the run out roll. The method according to claim 13,
The slab cutting auxiliary unit is a plurality of slab cutting device is provided along the extending direction of the run out roll in the longitudinal direction .
The method according to any one of claims 12 to 14,
An operation detecting sensor detecting the cast steel;
And a controller configured to control the operation of the slab cutting auxiliary unit by receiving a detection signal from the operation detecting sensor.
As a method of cutting a slab with a slab cutting auxiliary unit,
The cast cutting auxiliary unit
A support part having an arm supporting the slab and one end connected to the arm and having a rod for inducing a folding motion of the arm;
A shaft head configured to protrude from an upper part of the shaft fastening member coupled to the arm;
A support guide part connected to a lower portion of the shaft head, and capable of vertical movement, and having a housing connected to the other end of the rod.
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The process of preparing cast pieces;
Primary cutting the cast piece in the width direction while moving the cast piece;
Stopping the first cut while leaving a remainder having a predetermined width in the slab width direction;
Supporting the cast steel by converting the support portion of the cast steel cutting auxiliary unit into a horizontal state;
And secondly cutting the remaining portion of the cast steel.
In the process of switching the support portion of the slab cutting auxiliary unit to a horizontal state,
And raising the housing to move the rod to switch the arm fastened to the shaft fastening member to a horizontal state.
18. The method of claim 16,
And moving the slab to the cutting auxiliary unit after the slab is first cut, and sensing the moved slab.
18. The method of claim 16,
When the secondary cutting of the cast is completed,
And lowering the housing to move the rod to switch the arm in a horizontal state to a vertical state.
The method according to any one of claims 16 to 18,
Slab cutting method for removing the head crop of the slab by the slab cutting.

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