KR20170107146A - Method and Apparatus for Heating Edge Parts of Strip On Continuous Casting Process - Google Patents

Method and Apparatus for Heating Edge Parts of Strip On Continuous Casting Process Download PDF

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Publication number
KR20170107146A
KR20170107146A KR1020160030569A KR20160030569A KR20170107146A KR 20170107146 A KR20170107146 A KR 20170107146A KR 1020160030569 A KR1020160030569 A KR 1020160030569A KR 20160030569 A KR20160030569 A KR 20160030569A KR 20170107146 A KR20170107146 A KR 20170107146A
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KR
South Korea
Prior art keywords
coil
cast steel
heating coil
heating
casting
Prior art date
Application number
KR1020160030569A
Other languages
Korean (ko)
Inventor
고창순
하현진
최길용
김상중
Original Assignee
주식회사 다원시스
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Priority to KR1020160030569A priority Critical patent/KR20170107146A/en
Publication of KR20170107146A publication Critical patent/KR20170107146A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1213—Accessories for subsequent treating or working cast stock in situ for heating or insulating strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/122—Accessories for subsequent treating or working cast stock in situ using magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/16—Controlling or regulating processes or operations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227—Applications
    • H05B1/023—Industrial applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/36—Coil arrangements

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)

Abstract

Disclosed are a cast-edge heating device and method. According to one embodiment of the present invention, the cast-edge heating device and method are configured to adjust a position of the heating coil in accordance with the movement of the cast-piece by grasping fine movement of the cast-piece using a sensor, or to heat an edge of the cast-piece at a predetermined temperature by detecting the temperature of the cast-piece and controlling a voltage applied to a heating coil in accordance with the temperature of the cast-piece. Accordingly, the present invention is able to evenly heat an edge of a cast-piece using a heating coil.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for heating a steel strip edge in a casting process,

This embodiment relates to an apparatus and a method for heating an edge portion of a cast steel.

The contents described in this section merely provide background information on the present embodiment and do not constitute the prior art.

Generally, a strip produced in a continuous casting process is cut into a cast steel of 40 tons or less through a soft reduction process, heated in a reheating furnace, and then introduced into a hot rolling mill to be produced as a hot-rolled coil. Here, the cast steel includes a cast iron itself, an as-cast cast iron piece obtained by strip casting or the like, and a rolled cast iron piece obtained by rolling these cast iron or cast iron pieces, and is made of blooms, billets, (Slab).

The cast steel produced in the continuous casting process starts to gradually cool as the molten steel in the liquid state passes through the continuous casting machine and passes through the vertical cooling chamber. In particular, the edge portion of the casting is cooled more quickly than the other portions until the entire horizontal section of the original rolling mill is reached. As the edge portion of the cast steel is cooled, the upper and lower edges of the cast steel are stretched in the section from the vertical to the horizontal, and the lower portion is compressed. When the cast steel passes through the rolling mill in this state, . Especially steel types such as alloy steel become more severe. When a cast steel having cracks in the edge portion is put into a rolling machine and rolled, a fault such as an edge scab is generated in the produced hot-rolled coil, There is a problem in that a negative treatment (cutting) cost is high.

In order to eliminate such defects, conventionally, a process of reheating the edge portion of the casting has been carried out by using a torch in a vertical bending section.

However, the conventional method of heating the edge portion of the cast steel using a torch has a disadvantage in that the edge portion of the cast steel can not be uniformly heated. Since the flame of the torch can not always occur constantly, not all portions of the edge of the cast steel can be heated to a constant temperature. When the casting produced in the casting process moves finely up, down, left, and right, the distance between the edge of the casting and the torch becomes different, and the edge of the casting can not be uniformly heated. Further, the torch is difficult to control the flame, and in particular, there is a problem that a gas explosion is very dangerous because a pipe for supplying a gas used as a fuel is installed around a high temperature casting.

An object of the present embodiment is to provide a casting edge apparatus and method which can uniformly heat an edge portion of a casting using a heating coil.

In addition, the present embodiment can detect the minute movement of the cast steel by using a sensor, adjust the position of the heating coil according to the movement of the cast steel, or grasp the temperature of the cast steel and control the power applied to the heating coil according to the casting temperature, And it is an object of the present invention to provide a casting edge portion heating device and method capable of heating an edge portion of the casting to a predetermined temperature.

According to an aspect of the present invention, there is provided an apparatus for heating a cast steel produced in a continuous casting process, the cast steel having a predetermined distance from at least one edge portion, And a heating coil connected to the heating coil for fixing the heating coil and moving the heating coil so that the heating coil maintains a predetermined distance from the casting in accordance with the height or position of the cast steel, And a device control unit for receiving the height information or the position information of the casting spindle and controlling the coil moving device so that the heating coil maintains a predetermined distance from the casting spindle do.

According to another aspect of the present invention, there is provided a method for heating a cast steel produced by a casting heating apparatus for heating a cast steel produced in a continuous casting process, the casting being performed at a predetermined distance from an edge of the cast steel A step of fixing the heating coil so as to face the edge portion of the cast steel; and a step of applying power to the heating coil to heat the cast steel by radiating a magnetic field to the edge portion of the cast steel do.

As described above, according to the embodiment of the present invention, there is no danger of gas explosion because the edge portion of the cast steel is inductively heated by using the heating coil, and temperature control is easy, so that the temperature can be easily and quickly adjusted to a preset temperature .

According to another aspect of the present invention, even when the main body moves finely, upward, downward, leftward and rightward, the position of the heating coil is adjusted in accordance with the movement of the casting stove, So that the edge portion of the cast steel can be heated to a predetermined temperature.

Further, according to another aspect of the present embodiment, since the effect of penetrating the cast steel, particularly the edge portion of the cast steel, is attained, the heating effect is superior to the conventional method of heating the edge portion of the cast steel using the gas and the torch , And the quality of the produced product is excellent.

1 is a view showing a configuration of a casting edge heating system according to an embodiment of the present invention.
2 is a diagram illustrating a method of processing a signal in a casting edge portion heating system in accordance with an embodiment of the present invention.
FIG. 3 is a perspective view of the inside of a fixing portion of a heating coil in an arrangement of a coil moving device according to an embodiment of the present invention. FIG.
4 is a view showing the shape of a coil portion of a heating coil according to an embodiment of the present invention.
5 is a view showing a configuration of a coil moving apparatus according to an embodiment of the present invention.
6 is a flowchart illustrating a method of heating an edge portion of a cast steel according to an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference numerals whenever possible, even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. Throughout the specification, when an element is referred to as being "comprising" or "comprising", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise . In addition, '... Quot ;, " module ", and " module " refer to a unit that processes at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software.

1 is a view showing a configuration of a casting edge heating system according to an embodiment of the present invention.

1, an edge heating system 100 of a cast steel 120 according to an embodiment of the present invention includes a heating coil 130, a coil moving device 140, a device control unit 150, An apparatus 170 and a cooling system 180. As shown in FIG.

The casting edge heating system 100 is a system for heating an edge portion of the cast steel 120 produced in the casting process 110 as a part of the casting process 110. The casting edge heating system 100 heats the edge portion of the casting 120 which is produced in the casting process 110 and enters the light-tight casting process 190.

The heating coil 130 receives power from the power source device 170 and emits a magnetic field to an edge portion of the cast steel 120. The heating coil 130 radiates a magnetic field to the edge of the casting 120 and the edge of the casting 120 is heated by induction heating by the magnetic field radiated by the heating coil 130.

The heating coil 130 faces the edge of one or more of the casts 120 at a predetermined distance and emits a magnetic field to the edge of the casting 120. The edge portion of the cast steel 120 refers to a region having a certain area in the vicinity of the edge of the cast steel 120 and facing the heating coil 130 and heated by the heating coil 130 . The heating coil 130 is disposed at a predetermined distance from the edge of the cast steel 120 and faces the edge of the cast steel 120. The heating coil 130 faces the edge portion of the cast steel 120, thereby causing the edge of the cast steel 120 to emit a magnetic field. A detailed description of the heating coil 130 will be given with reference to FIG.

Since the heating coil 130 has an internal resistance, heat is necessarily generated internally when the power source 170 receives power and radiates a magnetic field. The heating coil 130 is supplied with cooling water from the cooling system 180 to cool such internal heat. At this time, if the temperature of the cooling water flowing into the heating coil 130 is abnormally high, or if the amount of the cooling water flowing into the heating coil 130 is small because the cooling water does not flow smoothly, have. If an abnormality occurs in the cooling water as described above, such information is provided to the device control unit 150.

The coil moving device 140 moves the heating coil 130 under the control of the device controller 150. The coil moving device 140 includes a fixed portion of the heating coil 130 and fixes the heating coil 130 to a position facing the edge portion of the piece 120 at a predetermined distance. The coil moving device 140 can move the heating coil 130 to a predetermined position so as to maintain a predetermined distance from the edge of the casting 120. The coil moving device 140 moves the heating coil 130 by moving the fixed portion of the heating coil 130 under the control of the device controller 150. The coil moving device 140 will be described in detail with reference to FIGS. 4 and 5. FIG.

The apparatus control unit 150 receives information about whether an abnormality has occurred in the production of the cast steel or information about whether or not an abnormality has occurred in the casting production equipment of the cast steel and the like so as to heat the edge of the cast steel 120 using the heating coil 130 . Information on whether or not an abnormality has occurred in production of the cast steel includes information on the production of cast steel from the HMI (human machine interface, not shown), height information of the tail of the cast steel 120 from the first distance sensor 160, and the like. The device control unit 150 receives information on the production of the casting from the HMI and judges whether the production is stopped to change the product or change the size of the casting product currently produced. The apparatus control unit 150 receives the height information of the tail of the casting from the sensor unit 160 and determines whether the tail of the produced cast steel 120 has an irregular shape (abnormally higher or lower than the periphery). The apparatus control unit 150 may control the heating of the edge portion of the cast steel 120 by using the heating coil 130 when the production of the cast steel 120 is stopped or the tail of the produced cast steel 120 has a malleable shape It is determined that there is no need to move to the evacuation area. The evacuation zone is an area where the influence of the heating coil 130 on the casting can be minimized, and the heating coil 130 in the casting may be the farthest away zone. Information on whether or not an abnormality has occurred in the production equipment of the casting is stored in the heating coil 130, information on whether abnormality has occurred in the cooling water, error detail information of the power supply device 170, , Pressure, and so on. The apparatus control unit 150 determines whether the cooling coil 130 has an abnormality in the cooling water 130 or an error occurs in the power supply 170 or the cooling system 180 or the cooling system 180 When it is determined that an abnormality has occurred in the temperature and pressure of the cooling water, the heating coil 130 controls the edge portion of the cast steel 120 from being heated. In this case, when the heating of the edge portion of the cast strip 120 of the heating coil 130 is proceeded, there is a possibility that the configuration of the heating coil 130, the power supply device 170, to be. If the apparatus control unit 150 determines that the production of the cast steel has failed or the casting production equipment has experienced an abnormality, the control unit 150 controls the coil moving apparatus 140 to move the heating coil 130 to the retirement area do. The apparatus control unit 150 controls the coil moving device 140 to move the heating coil 130 to the retirement area to minimize the damage to the structure of the heating coil 130 and the power source device 170 and the like. The device control unit 150 is connected to the power supply unit 170 and the cooling system 180 in a wired manner, and receives information as to whether or not an abnormality has occurred from each configuration.

The apparatus control unit 150 checks the height of the tail of the cast steel 120 and the position of the cast steel 120 from the first and second distance sensors 160 and 162 and moves the heating coil 130 according to the result Thereby controlling the coil moving device 140. The first distance sensor 160 senses the height of the tail of the cast steel 120 and senses whether the height of a specific part of the tail of the cast steel 120 to be sensed is higher or lower than the height of the other part. The apparatus control unit 150 receives the height of a specific portion of the tail of the slab 120 from the first distance sensor 160 and confirms the height of the tail of the slab 120 to thereby adjust the position of the heating coil 130 . For example, when the first distance sensor 160 is higher in height than the other portions of the tail portion of the cast steel 120, the specific portion of the tail of the cast steel 120 and the heating coil 130 are located at different portions There is a problem that it becomes closer. A situation may occur where the heating coil 130 and the casting 120 are in contact with each other. Thus, when the height of a specific portion of the tail of the cast steel 120 is higher than other portions, the device control unit 150 controls the coil moving device 140 to raise the heating coil 130. The second distance sensor 162 senses the position of the cast 120 and senses whether the cast 120 has been biased to the left or to the right at the center of the production line of the performance process 110. Even when the cast steel 120 is shifted to one side, there is a possibility that the same problem as that caused by a different height of a specific portion of the tail of the cast steel 120 is generated. The apparatus controller 150 receives the position of the bobbin 120 sensed by the second distance sensor 162 and moves the heating coil 130 to the left or right according to the position of the bobbin 120, . For example, when the slab 120 is biased to the left, the device control unit 150 controls the coil moving device 140 to move the heating coil 130 to the left. The device control unit 150 is connected to the first and second distance sensors 160 and 162 by wires to receive information from the first and second distance sensors 160 and 162, respectively.

The first temperature sensor 164 senses the temperature of the billet 120 before heating and provides it to the apparatus controller 150. The apparatus control unit 150 recognizes the difference between the current temperature of the billet 120 received from the first temperature sensor and in particular the edge portion of the billet 120 and the predetermined temperature desired to have the edge portion of the billet 120. [ The device controller 150 controls the size of the power source to be supplied to the heating coil 130 by the power source device 170 according to the difference between the current temperature of the edge of the casting and the predetermined temperature. For example, when the difference between the current temperature of the edge portion of the cast steel 120 and the predetermined temperature is large, the heating coil 130 controls the power source device 170 to provide a relatively larger power source. The second temperature sensor 166 senses the temperature of the billet 120 after heating and provides it to the device controller 150. The device control unit 150 can adjust the size of the power source to be supplied to the heating coil 130 by the power source device 170 by receiving the feedback result after heating from the second temperature sensor 166. [ The device control unit 150 is connected to the first or second temperature sensor 164 or 166 by wire to receive information from the first and second temperature sensors 164 and 166, respectively.

1, an edge heating system 100 according to an embodiment of the present invention is shown to include both a first temperature sensor 164 and a second temperature sensor 166, But may be implemented with only the first temperature sensor 164.

The power supply unit 170 supplies power to the heating coil 130 under the control of the device control unit 150. The power supply 170 may or may not provide power to the heating coil 130 according to the device controller 150 and may provide a power of a predetermined magnitude when provided. In this case, the power supply unit 170 transmits to the device control unit 150 information on which power source is provided when power is supplied or power is supplied. The power supply unit 170 may be connected to the heating coil 130, the bus bar, and the cable using only one cable or one bus bar.

The power supply device 170 is configured to receive information on whether an abnormality has occurred in the cooling water supplied by the power supply device 170, information on whether an abnormality has occurred in the cooling water supplied to the heating coil 130, To the device control unit 150. [0050] The power supply 170 also receives cooling water from the cooling system 180 to cool the heat generation of the power elements within the power supply 170. At this time, if there is an abnormality related to the cooling water, such as a case where the temperature of the supplied cooling water is abnormal or a flow of the supplied cooling water is not smooth or another error occurs, the control unit 150 is transmitted. The power supply unit 170 receives information indicating that an abnormality has occurred in the heating coil 130 with respect to the cooling water from the heating coil 130, and transmits the information to the device control unit 150.

Cooling system 180 provides cooling water to heating coil 130 or power supply 170 to lower the respective internal temperatures. When power is continuously supplied to the heating coil 130 so that the heating coil 130 is used for heating the edge portion of the billet 120, heat is inevitably generated inside the heating coil 130. Also, when the power supply 170 continuously supplies the power to the heating coil 130 as well, heat is generated in the internal power element of the power supply 170. The cooling system thus supplies the cooling water to lower the temperature of the internal or internal power element caused by the heat generated in the heating coil 130 or the internal power element of the power source device 170. [ The cooling system 180 provides plumbing to provide cooling water to the heating coil 130 or the power supply 170. At this time, the piping may be composed of a single pipe including the bus bar or cable used by the power supply unit 170 to supply power to the heating coil 130, and the pipe and the bus bar or the cable may exist independently of each other have. If the piping includes a booth bar or cable, the booth bar or cable may be located inside the piping and the cooling water may flow to the periphery of the booth bar or cable to lower the temperature of the booth bar or cable together.

The cooling system 180 transmits the storage amount information of the cooling water, the information about the temperature and the pressure of the cooling water that is received or exited, and the like to the device control unit 150. The device control unit 150 transmits the above-described information to the device control unit 150 so as to determine whether or not the cooling system 180 has an equipment abnormality

2 is a diagram illustrating a method of processing a signal in a casting edge portion heating system in accordance with an embodiment of the present invention.

The device control unit 150 transmits the size and frequency information of the power source, the temperature information before and after the heating, or the system information of the cooling system 180 or the power source device 170 to the HMI 210. The apparatus control unit 150 transmits the overall contents of the above-described edge heating system 100 to the HMI so that the operator operating the system can grasp the overall system. On the other hand, the device control unit 150 receives information on production from the HMI 210, such as production speed, size, and the like. The device control unit 150 receives information on the production speed of the casting from the HMI 210, and judges when the portion of the casting where the distance or the temperature information is sensed by each sensor reaches the heating coil 130 . The device controller 150 determines the transmission timing of the control signal related to the position of the heating coil 130 and the control signal regarding the size of the power source to be supplied to the heating coil 130 and the like. In addition, when the production control section 150 stops production of the cast steel in order to change the size of the cast steel to be produced by receiving information on the cast steel production from the HMI 210, .

The device control unit 150 receives the respective information from the first and second distance sensors 160 and 162 and the first and second temperature sensors 164 and 166.

The device control unit 150 transmits a control signal related to the movement of the heating coil 130 to the coil moving device 140. The apparatus control unit 150 controls the heating operation of the casting 120 by using the distance information from the first and second distance sensors 160 and 162 to the upper portion of the casting and the distance information to the left or right side of the casting, The distance between each part of the coil 130 and the cast steel 120 is grasped. The apparatus control unit 150 controls the coil moving device 140 to move the heating coil 130 up and down in the case where the distance between each part of the heating coil 130 and the casting 120 is shorter than a predetermined distance, Or left or right to transmit a control signal so as to maintain a predetermined distance.

The device control unit 150 may transmit a control signal to the coil moving device 140 regarding whether to perform remote control. The coil moving apparatus 140 can control the coil moving apparatus 140 remotely by an operator operating the system using the apparatus control unit 150. However, when the operator manually operates the coil moving apparatus 140, 130 can be controlled. When the operator of the system intends to operate the coil moving device 140 manually, the device control unit 150 transmits a control signal to the coil moving device 140 to determine whether to operate the coil moving device 140 manually.

The device control unit 150 receives information on the amount of stored cooling water from the cooling system 180, information on the temperature or pressure of the incoming / outgoing cooling water, and the like. The device control unit 150 determines whether an abnormality has occurred in the cooling system 180 by receiving the above-described information.

The device control unit 150 transmits a control signal regarding whether or not the pump is operating to the cooling system 180. The apparatus control unit 150 may not supply the cooling water such as when an abnormality has occurred in the power supply unit 170 or the heating coil 130 or when the production of the cast steel has been stopped The cooling system 180 may send a control signal to stop the operation of the pump. Conversely, when it is determined that the above-mentioned problem is solved, the device control unit 150 may send a control signal to the cooling system 180 to resume the operation of the interrupted pump.

The device control unit 150 transmits a control signal regarding whether or not the power is supplied to the power supply unit 170 and the magnitude of the power to be supplied. The device control unit 150 transmits a control signal as to whether the power supply unit 170 supplies power to the heating coil 130. [ It is determined whether it is necessary or not to supply power to the heating coil 130, such as when an abnormality has occurred in the power source apparatus 170 or other components, 170 to provide power. When the control unit 150 transmits a control signal to the power supply unit 170 to supply the power to the heating coil 130, the device control unit 150 also transmits a control signal regarding the magnitude of the power to be supplied. The apparatus control unit 150 receives the temperature information of the pre-heating strip 120 from the first temperature sensor 164 and grasps the difference between the temperature of the current strip 120 and a preset temperature for heating the strip. The size of the power to be supplied to the heating coil 130 varies depending on the difference between the temperature of the current cast steel 120 and the predetermined temperature. The larger the difference between the two temperatures is, the more power is supplied to the heating coil 130 because the more the casting 120 is to be heated. The apparatus controller 150 controls the power supply 170 to transmit the control signal regarding the size of the power supply to be supplied to the heating coil 130 in consideration of the temperature information of the pre-heating strip 120 received from the first temperature sensor 164, Lt; / RTI >

The apparatus control unit 150 receives information on whether or not power is supplied from the power supply unit 170, size information of the supplied power supply, error details, the temperature of incoming / outgoing cooling water, or the flow of cooling water. The device control unit 150 receives whether the power is supplied from the power source device 170 or the size information of the supplied power source to thereby confirm whether the power source device 170 has correctly supplied power according to the control. The apparatus control unit 150 receives information on the fault details of the power supply apparatus 170 from the power supply apparatus 170 and the temperature of the cooling water flowing into or out of the power supply apparatus 170 or the heating coil 130 or the flow of the cooling water The power supply device 170, or the heating coil 130 is abnormal.

The power supply 170 supplies power to the heating coil 130. The power supply unit 170 supplies power to the heating coil 130, and supplies power of a predetermined magnitude under the control of the device control unit 150.

The power supply unit 170 receives information about the temperature of the cooling water flowing into the heating coil 130 from the heating coil 130 or the flow of the cooling water. The power supply unit 170 receives information on whether or not an abnormality has occurred in the heating coil 130 and transmits the information to the device control unit 150.

FIG. 3 is a perspective view of the inside of a fixing part of a heating coil in an angle according to an embodiment of the present invention, and FIG. 4 is a perspective view of a coil part of a heating coil according to an embodiment of the present invention. Fig.

Referring to FIG. 3, the heating coil 130 according to an embodiment of the present invention includes a fixing portion 310, coil portions 320 and 325, and a connecting portion 330.

The fixing part 310 has a predetermined shape and includes the coil parts 320 and 325 to fix the coil parts 320 and 325 therein. In FIG. 3, the open portion of the fixing portion 310 is shown as having a downwardly directed 'C' shape, but it is not limited thereto and may have a different shape depending on the number and shape of the coil portion. For example, if the fixation portion 310 includes only one nose portion, it may have an 'a' shape or a symmetrical 'a' shape. Or if the coil portion has a shape of '-' rather than a shape of 'A', the fixing portion 310 may have a straight line shape. The lower end of the fixing part 310 is sealed to prevent the coil parts 320 and 325 from approaching the billet 120 due to gravity and can be fixed at a predetermined position. In the case where the fixing portion 310 has two coil portions inside and the opened portion has a downward " C " shape, the interval between the fixing portions 313 and 316 including the coil portions is HMI The size of the billet 120 received from the billet 120 is determined. The gap between the fixed portions 313 and 316 is determined according to the width of the cast steel 120 so that the cast steel 120 and the coil portions 320 and 325 can be fixed with a predetermined distance.

The coil parts 320 and 325 receive power from the power supply 170 and emit a magnetic field. The coil portions 320 and 325 may be constructed of copper pipes. The casting 120 receives the power from the coil parts 320 and 325 and emits a magnetic field. The casting piece 120 is induction-heated by a magnetic field radiated by the coil parts 320 and 325. Cooling water is injected into the coil parts 320 and 325, and the cooling water minimizes heat generated inside the coil parts 320 and 325.

FIG. 4 shows the shape of the coil part according to an embodiment of the present invention.

Fig. 4 (a) shows a coil portion bending a part to face both one side of the edge portion of the cast steel 120 and another side perpendicular to one side thereof. The coil sections 320 and 325 are bent to a certain extent so as to face both sides of the cast steel 120 located at the edge of the cast steel 120 to increase the facing area so that the heating efficiency of the edge of the cast steel 120 .

Fig. 4 (b) or Fig. 4 (c) shows the coil portion facing one side of the edge portion of the cast steel 120 without the bent portion. The coil parts 320 and 325 are advantageous in that the coil parts 320 and 325 can be configured to be smaller and more simple, though the coil parts are somewhat smaller than the coil part bent in terms of heating efficiency.

The coil portions 320 and 325 may be bent to have predetermined curvatures, particularly curvatures similar to those of the cast steel. The cast steel produced in the casting process has a curvature due to the nature of the process. At this time, if the coil parts 320 and 325 facing the cast with a certain curvature have no curvature, a certain part of the coil parts 320 and 325 face relatively close to the cast, The other part is relatively far away from the cast. Therefore, as the coil parts 320 and 325 are bent to have a predetermined curvature, particularly, a curvature similar to that of the cast steel, all parts of the coil parts 320 and 325 can be closely contacted with the cast steel.

The connection part 330 protrudes from the fixing part 310 and connects the coil moving device 140 and the fixing part 310. The connecting portion 330 connects the fixing portion and the coil moving device 140 so that the fixing portion 310 is prevented from approaching the casting 120 by gravity and can be fixed at a predetermined position.

5 is a view showing a configuration of a coil moving apparatus according to an embodiment of the present invention.

5, a coil moving apparatus 140 according to an embodiment of the present invention includes an angle adjusting unit 510, an arm frame 520, a screw jack 530, a wheel 540, And a weight counterbalance weight 510.

The angle adjusting unit 510 is positioned at one end of the arm frame 520 and connected to the heating coil 130 to adjust the angle formed by the heating coil 130 and the casting 120. The angle adjusting portion 510 is connected to the connecting portion 330 of the heating coil 130 to fix the heating coil 130. The angle adjusting unit 510 adjusts an angle formed by the heating coil 130 and the casting 120 to change an area of the heating coil 130 facing the edge of the casting 120. The apparatus controller 150 receives the temperature information of the cast steel 120 after the heating from the second temperature sensor 166 and can confirm in real time whether or not the edge of the cast steel 120 has been heated to a predetermined temperature. For example, when the edge of the cast steel 120 is heated to a predetermined temperature, the angle adjusting unit 510 adjusts the angle formed between the heating coil 130 and the cast steel 120, The temperature for heating the part can be quickly controlled.

The arm frame 520 connects the angle adjusting part 510 and the weight weight 510 so that the heating coil 130 connected to the angle adjusting part 510 can be balanced and fixed.

The screw jack 530 and the wheel 540 move the arm frame 520 to change the position of the heating coil 130 connected to the angle adjuster 510. The screw jack 530 moves the arm frame 520 up and down so that the heating coil 130 rises or falls. The wheel 540 moves the arm frame to the left and right so that the heating coil 130 is also moved left and right together therewith. The screw jack 530 or the wheel 540 operates under the control of the device control unit 150. A state in which the position of the heating coil 130 is controlled by the screw jack 530 or the wheel 540 is shown in Figs. 5 (b) and 5 (c). Fig. 5 (b) shows a state in which the heating coil rises to the maximum and moves to the left to the maximum. Fig. 5 (c) shows a state in which the heating coil descends to the maximum and moves to the maximum to the right. The apparatus control unit 150 controls the screw jack 530 or the wheel 540 so that the height of the cast steel 120 or the height of the cast steel 120 in the position of the heating coil 130 shown in Figs. And controls the heating coil 130 to move upward or downward or leftward or rightward according to the position of the heating coil 120. [

The weight counterbalance 550 is located at the other end of the arm frame 520 so that the arm frame 520 is horizontally balanced. The weight counterweight 550 has the same weight as the weight of the heating coil 130 connected to the angle adjuster 510 and the angle adjuster 510 located at one end of the arm frame. The weight balance weight 550 has the same weight as that of the angle adjusting unit 510 and the heating coil 130 so that the arm frame 520 and the heating coil 130 are horizontally balanced, Is not tilted to one side.

6 is a flowchart illustrating a method of heating an edge portion of a cast steel according to an embodiment of the present invention.

Cooling water storage, input and output temperature and pressure information from cooling system and power supply. Information on whether or not the power is supplied, information on the size of the supplied power, and information on the error history is received (S610). The apparatus control unit 150 receives information on the above-described abnormality of the heating coil 130, the cooling system 180, or the power supply apparatus 170 from the cooling system 180 and the power supply apparatus 170. [

It is determined whether there is an abnormality in the heating coil, the cooling system, or the power supply unit (S620).

If there is no abnormality in the heating coil, cooling system or power supply, the cooling system is started (S630). The apparatus control unit 150 supplies the cooling water to the heating coil 130 and the power supply unit 170 by operating the cooling system 180. [

The distance information of the casting and the temperature information of the casting before and after heating are received from the sensor (S640). The device control unit 150 receives distance information from the first and second distance sensors to the top, left, and right sides of the slab 120. The apparatus control unit 150 receives temperature information of the pre-heating and post-heating bobbins 120 from the first or second temperature sensor.

Using the distance information of the casting, the coil moving device is controlled so that the heating coil faces the casting while maintaining a predetermined distance (S650). The apparatus control unit 150 controls the distance between the heating coil 130 and the edge of the billet 120 so as to maintain a predetermined distance between the heating coil 130 and the billet 120 using the distance information of the billet 120 received from the first and second distance sensors. The heating coil 130 is moved by controlling the coil moving device 140 according to the position of the edge portion.

The power supply unit is controlled to adjust the size of power to be supplied to the heating coil by using the temperature information of the pre-heating and post-heating units (S660). The apparatus control unit 150 controls the power supply apparatus 170 to heat the edge of the slab 120 to a preset temperature by using the temperature information of the pre-heating and post-heating slabs 120 received from the first and second temperature sensors Thereby controlling the size of the power supply to be supplied to the heating coil 130.

When an abnormality occurs in the heating coil, the cooling system, or the power supply unit, each is checked (S670). The apparatus control unit 150 controls the heating coil 130, the cooling system 180, or the power supply 170 in the event that an abnormality occurs in the heating coil 130, the cooling system 180, or the power supply apparatus 170, And transmits information to the HMI 210 indicating that an abnormality has occurred in the entire configuration. The operator of the casting edge heating system can check the configuration in which the abnormality detected from the HMI 210 has occurred, so that the abnormal configuration can be properly operated again. When the maintenance of the operator is completed, the device control unit 150 goes through step S610 again and determines whether there is any abnormality in each configuration.

Although it is described in FIG. 6 that the processes S610 to S670 are sequentially executed, this is merely an illustration of the technical idea of the embodiment of the present invention. In other words, those skilled in the art will appreciate that the steps described in FIG. 6 may be modified and executed without departing from the essential characteristics of an embodiment of the present invention, or the steps S610 to S670 6 is not limited to the time-series order because it can be variously modified and modified by being executed in parallel.

Meanwhile, the processes shown in FIG. 6 can be implemented as a computer-readable code on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. That is, a computer-readable recording medium includes a magnetic storage medium (e.g., ROM, floppy disk, hard disk, etc.), an optical reading medium (e.g., CD ROM, And the like). The computer-readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: casting edge heating system 110: casting process
120: Cast steel 130: Heating coil
140: coil moving device 150:
160, 162: Distance sensor 164, 166: Temperature sensor
170: power supply unit 180: cooling system
190: Light-hardening process 210: HML
310, 313, 316: fixing portion 320, 325: coil portion
330: connection part 510: angle adjusting part
520: arm frame 530: screw jack
540: Wheel 550: Weight counterbalance

Claims (12)

An apparatus for heating a cast steel produced in a continuous casting process,
A heating coil facing the at least one edge portion of the cast steel at a predetermined distance and heating the cast steel by applying a power source and radiating a magnetic field with the cast steel;
A coil moving device connected to the heating coil to fix the heating coil and to move the heating coil so that the heating coil maintains a predetermined distance from the cast according to the height or position of the casting; And
A device control unit for receiving the height information or position information of the casting spindle and controlling the coil moving device so that the heating coil maintains a predetermined distance from the casting spindle,
And a heating section for heating the cast strip. The method according to claim 1,
The heating coil
A coil part for receiving the power source and radiating a magnetic field;
A fixing part for fixing the coil part, the fixing part including the coil part inside; And
And a connecting portion protruded from the fixing portion and connecting the coil moving device and the fixing portion. 3. The method of claim 2,
Wherein the coil portion or the fixing portion includes:
Wherein the cast steel is faced with a predetermined distance from any one side of the edge portion of the cast steel and partially bent so as to face at a predetermined distance from either one side of the edge portion of the cast steel and another side perpendicular to the one side, . 3. The method of claim 2,
Wherein the coil portion or the fixing portion
And has a preset curvature. The method according to claim 1,
The apparatus control unit includes:
And controls the coil moving device to raise or lower the heating coil based on the height information of the casting, when it is ascertained that the height of a certain portion of the casting is higher or lower than the height of the peripheral portion of the certain portion of the casting Casting heater. The method according to claim 1,
The apparatus control unit includes:
And controls the coil moving device so that the heating coil moves to the left or right when it is confirmed from the position information of the cast steel that a certain portion of the cast steel is shifted to the left or right side of the peripheral portion of the certain portion of the cast steel Casting heater. The method according to claim 1,
The apparatus control unit includes:
Wherein the control unit receives temperature information of the casting before heating by the heating coil and controls the size of the power applied to the coil so that the edge of the casting has a predetermined temperature. 8. The method of claim 7,
The apparatus control unit includes:
And receives the temperature information of the cast steel which is heated by the heating coil, and confirms whether the edge portion of the cast steel has a preset temperature. The method according to claim 1,
The coil moving device includes:
Wherein an angle formed by the fixing portion of the heating coil with the cast steel is adjusted to change an area of the heating coil facing the cast steel. A method for heating a cast steel by a casting apparatus for heating a cast produced in a continuous casting process,
Fixing the heating coil so as to face the edge portion of the cast steel at a predetermined distance from an edge portion of the cast steel; And
And a step of applying power to the heating coil to heat the cast steel by radiating a magnetic field with the edge of the cast steel
And heating the billet. 11. The method of claim 10,
And controlling the position of the heating coil so that the heating coil receives the height information or the position information of the casting so that the heating coil maintains a predetermined distance from the edge of the casting. 11. The method of claim 10,
And controlling the size of a power source to be applied to the heating coil so that the temperature of the edge portion of the cast steel has a preset temperature.

KR1020160030569A 2016-03-14 2016-03-14 Method and Apparatus for Heating Edge Parts of Strip On Continuous Casting Process KR20170107146A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190133965A (en) * 2018-05-24 2019-12-04 주식회사 다원시스 Induction Heating Apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190133965A (en) * 2018-05-24 2019-12-04 주식회사 다원시스 Induction Heating Apparatus

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