KR101325305B1 - Scrap treatment apparatus method of the same - Google Patents

Abstract

Disclosed are a scrap processing apparatus and method. Scrap processing apparatus according to an aspect of the present invention is provided on the movement path of the material cutting unit for cutting the material entered into the preceding process when the abnormal supply of the material in a subsequent process; An accommodation body disposed at the rear of the cutting unit to accommodate the material; And an entrance pinch roll and an exit pinch roll provided at the entrance and exit sides of the accommodation body to move the material and to bend the material to be accommodated by using a difference in feed speed during abnormal supply of the material.

Description

Scrap Processing Equipment and Method {SCRAP TREATMENT APPARATUS METHOD OF THE SAME}

The present invention relates to a scrap processing apparatus and method for allowing a continuous process of continuous rolling process by scrap processing the slabs continuously supplied in an emergency situation in the continuous continuous rolling process.

In general, the continuous continuous rolling process includes a casting process of continuously casting molten steel of a liquid into a solid form without a defect, and a rolling process of rolling continuously cast pieces.

In the continuous rolling device, the molten steel stored in the ladle in the machine is supplied to the mold through a tundish to produce a cast steel, and then passed through a plurality of rough rolling rolls or finishing rolls, etc. to manufacture a slab form. Proceed to

Such continuous rolling device stops casting when abnormal cobble such as plate breaking, twist, cold winding, etc. occurs during finishing rolling or winding process, but the casting stop is not made within a short time. The supplied cast steel collides with the continuous rolling mill in the subsequent process, causing damage.

In addition, while conventionally controlling to bypass the molten steel supplied from the tundish to the mold or to delay the feed rate of the cast steel, there is a limit in solving the fundamental problem.

In addition, conventionally, a part of the molten steel may leak while bypassing molten steel supplied from the tundish to the mold, and the cooling devices for cooling the rough rolling roll or the finishing roll and the cast steel are damaged by the leaked molten steel. You can wear

An embodiment of the present invention provides a scrap processing apparatus and method for forming a space in which the slab is accommodated so that the slab can be continuously processed when an emergency situation occurs in the continuous rolling process. It aims to do it.

Scrap processing apparatus according to an aspect of the present invention is provided on the movement path of the material cutting unit for cutting the material entered into the preceding process when the abnormal supply of the material in a subsequent process; An accommodation body disposed at the rear of the cutting unit to accommodate the material; And an entrance pinch roll and an exit pinch roll provided at the entrance and exit sides of the accommodation body to move the material and to bend the material to be accommodated by using a difference in feed speed during abnormal supply of the material.

Here, the receiving main body may include a casing having an inlet and an outlet which are opened so that the material enters and exits, and has a space accommodating the material therein.

In addition, it may include an inclined surface provided on one side of the casing to guide the bending of the material.

In addition, it may include a table provided with at least one rotating roller for guiding the movement of the material, and the lifting unit for providing a space in which the material is bent by lifting the table.

In addition, the lifting unit may include at least one actuator provided in the lower portion of the table.

In addition, the entry pinch roll and the exit pinch roll may include a motor which is provided to each rotation shaft to impart a driving force, and may further include a controller for varying the rotational speed of the motor during abnormal supply of the material.

The control unit may stop the exit pinch roll when the material is abnormally supplied, and the entrance pinch roll may be accelerated at a maximum speed to enter the material into the receiving body.

The apparatus may further include a storage unit which is provided between the cutting unit and the receiving main body and is transferred to a space in which the raw material is accommodated in the receiving main body and stores the trailing material cut by the cutting unit.

In addition, the scrap processing apparatus may be provided between the rough rolling process and the finishing rolling process of the continuous continuous rolling apparatus.

In addition, the scrap processing method according to another embodiment of the present invention is a material supply step of supplying the material continuously; When the abnormal supply of the material occurs in a subsequent process, the material cutting step of cutting the material entered into the preceding process; A material accommodating step of accommodating the material cut in the material cutting step; A trailing material supplying step of supplying a trailing material to the space in which the material is accommodated in the material accommodating step; And a scrap storage step of cutting the material supplied in the subsequent material supplying step and storing it as scrap.

The material accommodating step may accommodate the material by stopping the progress of the front end of the material and accelerating the progress of the rear end of the material.

In addition, the material accommodating step may be accommodated by bending the material supplied.

According to one embodiment of the present invention, if a material is abnormally supplied to a subsequent step in a continuous rolling process, a predetermined space may be provided by bending and storing the supplied material, and the subsequent supply is continuously supplied to the provided space. Continuous casting can be continued by supplying a material.

As described above, in the present embodiment, continuous casting may be performed even when abnormal supply of materials occurs in a subsequent process in the continuous rolling process, thereby preventing productivity degradation and cost increase due to interruption and re-starting of continuous casting.

In addition, in this embodiment, it is possible to prevent the interruption of the supply of the cast steel to minimize the damage caused to the facility as the hot molten steel stagnated during the continuous rolling process, it is possible to follow-up treatment according to the abnormal situation in the subsequent process By ensuring a long time, it is possible to produce a normal cast quickly after the subsequent processing.

In addition, the present embodiment can be prevented from being supplied to the subsequent process in an abnormal situation can prevent the collision with the continuous rolling device of the subsequent process, thereby preventing damage.

In addition, the present embodiment can prevent damage caused by molten steel leaking in the process of stopping the casting, and thus it is unnecessary to replace the damaged device.

Therefore, the present embodiment can re-supply the cast continuously when solving the problem of the subsequent process to resume production in a short time to increase the productivity.

1 is a configuration in which the scrap processing apparatus is applied to a continuous rolling mill according to an embodiment of the present invention.
Figure 2 is an operating state of the scrap processing apparatus according to an embodiment of the present invention.
Figure 3 is a graph showing the feed rate of the cast for each position in the scrap processing apparatus according to an embodiment of the present invention.
4 is a flow chart showing a scrap processing method according to an embodiment of the present invention.
5 is a block diagram of a scrap processing apparatus according to another embodiment of the present invention.
Figure 6 is an operating state of the scrap processing apparatus according to another embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below. The shape and the size of the elements in the drawings may be exaggerated for clarity and the same elements are denoted by the same reference numerals in the drawings.

1 is a configuration diagram in which a scrap processing apparatus is applied to a continuous rolling apparatus according to an embodiment of the present invention, Figure 2 is an operating state diagram of a scrap processing apparatus according to an embodiment of the present invention.

Referring to Figures 1 and 2, the continuous rolling device 10 is produced from the material supplied from the player 20, for example, molten steel cast steel, and then to produce it in the form of a coil having a thickness and width desired by the user Can be.

To this end, the continuous rolling device 10 is supplied to the molten steel stored in the ladle in the player 20 to the tundish, the molten steel supplied to the mold from the tundish is discharged can be continuously produced cast.

In addition, the slabs produced by the continuous casting as described above may be manufactured in a slab form while passing through a plurality of rough rolling rolls 30 or finishing rolling rolls 40, etc., in the form of a coil or the like to the winder 50 Can be wound up.

On the other hand, in the present embodiment, the cast steel may cause abnormal supply (cobble) of the cast steel, such as plate breaking, twisting, cold winding, etc. in a subsequent process including a finishing mill 40 or a winding machine 50, such as When the abnormal supply occurs, the scrap processing apparatus 100 for scrap processing the supplied slab to be continuously supplied without interruption to the supplied slab may be provided.

In this embodiment, the scrap processing apparatus 100 may include a cutting unit 110 provided on the movement path of the cast steel.

The cutting unit 110 may cut the slab continuously supplied from the player 10 to the movement path when the slab is abnormally supplied in a subsequent process.

And, the rear of the cutting unit 110 may be provided with a receiving body 120 for receiving the slab cut by the cutting unit 110.

In addition, the entrance and exit pinch rolls 124 and the exit pinch rolls 126 may be provided at the entrance and exit sides of the receiving body 120 to rotate and move the material in contact with the material.

The entry pinch roll 124 and the exit pinch roll 126 can supply the cast slab to the finishing mill 40 and the winding machine 50 successive thereto.

On the other hand, the entry pinch roll 124 and the exit pinch roll 126 has a problem in the subsequent process including the finishing mill 40, the winding machine 150, etc. By generating a difference in the moving speed, it can be bent to accommodate the cast in the receiving body 120 using this.

In other words, in the present embodiment, the entry pinch roll 124 and the exit pinch roll 126 allow the cast steel to be continuously supplied even if the cast steel does not proceed any further in the subsequent process, thereby allowing continuous casting of the cast steel. Maintenance of the supply can be maintained.

To this end, the receiving body 120 of the present embodiment may include a casing 121 in which the inlet 121a and the outlet 121b are opened so that the material enters and exits. In addition, the inlet 121a and the outlet 121b of the casing 121 may enter or exit the casing 121 by the entry pinch roll 124 and the exit pinch roll 126, respectively.

A space may be provided inside the casing 121, and the slab continuously supplied during abnormal supply of the slab may be bent and accommodated.

In addition, one side of the casing 121 may be provided with an inclined surface 122 to guide the bending occurs inside the receiving of the cast. For example, the inclined surface 122 that is inclined in the direction of gathering inwardly may be provided at the lower or upper inlet and outlet side of the casing 121.

In addition, in the present embodiment, the entry pinch roll 124 and the exit pinch roll 126 may be provided with motors (not shown) on their respective rotation shafts, and the driving force may be imparted by the action of the motors.

In addition, a control unit is connected to these motors, and the control unit may vary the rotational speed of the motor during abnormal supply of the cast steel to generate a difference in the rotational speeds of the entry pinch roll 124 and the exit pinch roll 126 to bend the cast steel. have.

That is, the controller stops the exit pinch roll 126 when the cast is abnormally supplied so that the cast is not supplied to the subsequent process, and the side pinch roll 124 accelerates at the maximum speed so that the casing (the casing of the receiving body 120) 121) You can enter inside. In addition, the slab entered into the casing 121 may be guided and bent by the inclined surface 122 of the casing 121.

Cutting unit 110 is provided with a cutting knife 112 on both sides of the direction orthogonal to the traveling direction of the cast steel, the cutting knife 112 is moved in the direction engaged with the cutting actuator 114 to cut the cast steel can do.

Then, the slabs cut by the cutting unit 110 is supplied to the storage unit 130 provided between the cutting unit 110 and the receiving body 120, the storage unit is laminated to the cut slab subsequent process Can be saved for scrap processing.

To this end, the storage unit 130 includes a seating portion 132 on which the slab cut by the cutting unit 110 is seated, and at least one actuator 134 for lifting up and down is provided below the seating portion 132. Can be provided.

The actuator 134 may be lowered as the slab is seated on the seating portion 132, and may subsequently stack the slabs subsequently cut.

In addition, the heating unit 140 for heating the slab may be provided between the storage unit 130 and the receiving body 120 in the present embodiment. For example, the heating unit 140 may include an induction heater, and may improve the bending characteristics by heating the slab to enter the receiving body 120.

Referring to the operation of the scrap processing device configured as described above and the scrap processing method using the same as follows.

Figure 3 is a graph showing the feed rate of the cast for each position in the scrap processing apparatus according to an embodiment of the present invention. 4 is a flowchart illustrating a scrap processing method according to an embodiment of the present invention.

First, molten steel supplied from the ladle of the player 20 is discharged through a mold through a tundish and continuously produces a material, for example, a cast steel.

Then, the continuously cast as described above is supplied to the roughing mill 30, the finishing mill 40, the winding machine 50, and the like of the subsequent rolling process through the transfer line.

On the other hand, in the present embodiment, if an abnormal supply situation of the cast steel occurs in a subsequent process such as the finishing mill 40 or the winding machine 50, the operation of the subsequent process is stopped. Then, the continuously supplied cast slab is treated with scrap to maintain a continuous casting state, solving the problems caused in subsequent processes.

To this end, the scrap processing method in the present embodiment includes a material supply step of continuously supplying the cast from the player 20 (see S11).

In the normal supply situation of the cast steel, it can be supplied at a constant speed as shown in FIG.

And, if an abnormal supply situation of the cast steel occurs, the exit speed of the cast steel supplied through the player 20 and the rough rolling machine 30 is kept constant, and subsequent to the finishing mill 40 or the winding machine 50, etc. The advancing of the cast steel is stopped by abnormal supply of cast steel generated in the process (see S12).

That is, as shown in FIG. 3B, when abnormal supply occurs in a subsequent process, supply of the cast steel may be stopped in a subsequent process.

As described above, when abnormal supply of the cast steel is generated in the process of supplying the cast steel to the subsequent process, a material cutting step of cutting the cast steel being supplied via the rough rolling mill 40 is performed (see S13).

The material cutting step is to cut the continuously cast steel using the cutting unit (110).

On the other hand, when the material is cut in the material cutting step, the material receiving step is carried out, the material cut in this process is accommodated in the receiving body 120.

At this time, the material receiving step stops the operation of the exit pinch roll 126 by stopping the operation of the motor connected to the exit pinch roll 126, and thus the progression of the cast between the exit pinch roll 126 is stopped ( See S14).

That is, as shown in FIG. 3C, the rotation of the exit pinch roll 126 is stopped, and thus, the cast may not proceed to the subsequent process.

At the same time, when the motor connected to the entry pinch roll 124 is accelerated at the maximum speed and the entry pinch roll 124 is rotated at the maximum speed, the cast pieces held between the entry pinch rolls 124 are accommodated at the maximum speed. The main body 120 enters, and in this process, the cast steel is bent and received inside the receiving main body 120 (see S15).

That is, as shown in (d) of FIG. 3, the side pinch roll 124 rotates at the maximum acceleration, and the cast piece can enter the receiving body 120 inside. At this time, the cast slab accommodated in the receiving body 120, the discharge is limited as the exit pinch roll 126 is stopped, in this process can be accommodated by bent by the inclined surface 122 of the casing 121.

When the cast piece is accommodated in the housing body 120 by a predetermined amount, the speed of the entry pinch roll 124 is slowed down, and when the cast piece is filled in the accommodation body 120 by the allowable amount, the operation of the entry pinch roll 124 is stopped.

In this case, as shown in (e) of FIG. 3, the accommodating main body 120 may have a space capable of accommodating the slab as much as a space generated according to the speed difference between the exit pinch roll 126 and the entrance pinch roll 124. .

On the other hand, in the space generated by receiving the slab to the receiving body 120 in the material receiving step as described above, the slab continuously supplied in the material supply step is entered.

Then, when the trailing slab enters the space, the cutting unit is cut in the cutting unit (see S16).

On the other hand, the following slabs cut by the cutting unit is stored as scrap in the scrap storage step.

The scrap storage step is that if the later cut slab is seated in the seating part, the process of lowering the height of the seating part and repeating the process of seating the other cut slab trailing on the upper side and storing the slab, then abnormal supply of the cast in a subsequent process To solve the problem, if the cast is normally supplied, the stored cast is provided as a subsequent process of treating the scrap (see S17).

As such, in the present embodiment, when abnormal supply of the cast steel occurs in the continuous rolling process, the casting can be continuously processed by treating the supplied cast steel with scrap while solving the problem.

In the present embodiment, the housing, for example, the housing body in which the slab is accommodated is described as including a casing, but the configuration for forming a space in which the slab is accommodated may be modified in various forms.

5 is a configuration diagram of a scrap processing apparatus according to another embodiment of the present invention, Figure 6 is an operating state diagram of a scrap processing apparatus according to another embodiment of the present invention.

5 and 6, in the present embodiment, the receiving body 220 may include a table 222 for guiding or supporting the movement of the material, for example, the cast steel.

The table 222 may be provided with at least one rotary roller 223 to guide the movement of the cast.

In addition, one side of the table 222, for example, the lower portion may be provided with a lifting unit 228 that forms a space to accommodate the cast in the abnormal supply of the cast.

In addition, the entrance pinch roll 224 and the exit pinch roll 226 for guiding the movement of the material may be provided at the inlet and the outlet of the receiving body 220.

In the present embodiment, the cast steel that is continuously supplied during abnormal supply of the cast steel is restricted movement by the exit pinch roll 226, the supply is maintained by the entry pinch roll 224, in the process to the receiving body 220 Bends may occur in the cast slabs.

At this time, the lifting unit 228 is lowered to form a space by lowering the table 222 for guiding or supporting the cast steel, the cast steel can be accommodated by bending to the table 222 lowering by gravity and self-weight.

In this embodiment, the lifting unit 228 may include at least one actuator 229 provided at the bottom of the table.

For example, in the present embodiment, the lifting unit 228 may be provided with actuators 229 respectively at the front or rear side of the lower portion of the table 229, preferably the actuators 229 are provided in pairs in the width direction It is also possible.

In addition, the actuator 229 may adjust the inclined angle of the table, and may change the traveling speed or the curved shape of the cast steel by using the actuator 229.

In addition, the material in the continuous rolling device in the present embodiment may be provided in the form of a plate, or may be provided in the form of a wire, the shape of the roller for transferring it according to the shape of the material may be set differently.

That is, when the material is in the form of a plate, the roller may be provided in a form having a predetermined width to support it. In addition, when the material is in the form of wire, the roller may be provided with a groove, for example, a ball so as to guide the movement of the material.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. It will be clear to those who have knowledge.

10: continuous rolling device 20: playing machine
30: rough rolling roll 40: finishing rolling roll
50: winder 100: scrap processing apparatus
110: cutting unit 112: cutting knife
114: cutting actuator 120: receiving body
121: casing 121a: inlet
121b: exit 122: slope
124: exit pinch roll 126: exit pinch roll
130: storage unit 132: seating portion
134: actuator 140: heating

Claims (12)

A cutting unit provided on the movement path of the raw material and cutting the raw material entered into the preceding process when the abnormal supply of the raw material is performed in a subsequent process;
An accommodation body disposed at the rear of the cutting unit to accommodate the material; And
An entrance pinch roll and an exit pinch roll provided at the entrance and exit sides of the accommodation body to move the material, and to bend the material to be accommodated by using a difference in feed speed during abnormal supply of the material;
Scrap processing apparatus comprising a
The method according to claim 1, wherein the receiving body is
And a casing having an inlet and an outlet formed to open and close the material, and having a space in which the material is accommodated.
The method according to claim 2,
Scrap processing apparatus characterized in that it comprises an inclined surface provided on one side of the casing to guide the bending of the material.
The method according to claim 1, wherein the receiving body is
A table provided with at least one rotating roller for guiding the movement of the material;
And a lifting unit providing a space in which the material is bent by lifting the table.
The method of claim 4, wherein the lifting unit
And at least one actuator provided at a lower portion of the table.
The method according to any one of claims 1 to 5, wherein the entry pinch roll and the exit pinch roll includes a motor which is provided to each rotation shaft to impart a driving force,
And a controller for varying the rotational speed of the motor when the material is abnormally supplied.
The method of claim 6,
And the control unit stops the exit pinch roll when the supply of the raw material is abnormal, and the entrance pinch roll is accelerated at the maximum speed and enters the material into the receiving body.
The method according to any one of claims 1 to 5,
And a storage unit provided between the cutting unit and the receiving body, the storage unit storing the trailing material which is transferred to a space in which the material is accommodated in the receiving body and cut by the cutting unit. Device.
The method according to any one of claims 1 to 5,
Said scrap processing apparatus is provided between the rough rolling process and the finishing rolling process of a continuous continuous rolling apparatus.
A material supply step of continuously supplying materials;
When the abnormal supply of the material occurs in a subsequent process, the material cutting step of cutting the material entered into the preceding process;
A material accommodating step of accommodating the material cut in the material cutting step;
A trailing material supplying step of supplying a trailing material to the space in which the material is accommodated in the material accommodating step;
A scrap storage step of cutting the material supplied in the trailing material supplying step and storing it as scrap;
Scrap processing method comprising a.
The method according to claim 10, wherein the material receiving step
Stopping the advancing of the front end of the material, and accelerates the progress of the rear end of the material to accommodate the material.
The method according to claim 10 or 11,
The material receiving step is a scrap processing method characterized in that to accommodate the bent material supplied.

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