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WO2009146665A1 - Dispositif et procédé servant à détecter et à contrôler les scories dans de l'acier en fusion - Google Patents

Dispositif et procédé servant à détecter et à contrôler les scories dans de l'acier en fusion Download PDF

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Publication number
WO2009146665A1
WO2009146665A1 PCT/CN2009/072728 CN2009072728W WO2009146665A1 WO 2009146665 A1 WO2009146665 A1 WO 2009146665A1 CN 2009072728 W CN2009072728 W CN 2009072728W WO 2009146665 A1 WO2009146665 A1 WO 2009146665A1
Authority
WO
WIPO (PCT)
Prior art keywords
slag
molten steel
information
package
brightness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2009/072728
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English (en)
Chinese (zh)
Inventor
田志恒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP09757099A priority Critical patent/EP2316594A1/fr
Publication of WO2009146665A1 publication Critical patent/WO2009146665A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B22D11/18—Controlling or regulating processes or operations for pouring
    • B22D11/181—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/001—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the slag appearance in a molten metal stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
    • B22D2/003—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass for the level of the molten metal

Definitions

  • the invention relates to a slag detection and control technology, in particular to a device for detecting and controlling slag flowing from a large package through a long nozzle to a molten steel in a medium package, and a detection and control flow from the large package through the long nozzle to the middle
  • a slag detection and control technology in particular to a device for detecting and controlling slag flowing from a large package through a long nozzle to a molten steel in a medium package, and a detection and control flow from the large package through the long nozzle to the middle
  • the more common detection technologies are electromagnetic method and vibration method.
  • the first disadvantage of the electromagnetic method is that the electromagnetic sensor is installed in a high temperature area around the upper nozzle of the large bag. The electromagnetic sensor is subjected to a high temperature baking life, and once the sensor is damaged, it needs to be replaced when the large bag is repaired (the cycle is usually one week).
  • the second disadvantage of the electromagnetic method is that the installation of the sensor requires the modification of the large-seat brick and the reference plate, and the modification work is relatively large. These two shortcomings affect the widespread promotion of electromagnetic slag technology.
  • the first disadvantage of the vibration method is that the vibration source of the continuous casting site is seriously disturbed.
  • the vibration slag equipment Even if the adjustment of the large package skateboard is restricted during the slag inspection and the start of many electromechanical equipment, the vibration slag equipment will also have a false alarm in advance, which will make the large Excessive amount of steel after the package seriously affects the utilization rate of the steel in the big package;
  • the second disadvantage of the vibration method is that the difference between the vibration signal caused by the molten steel and the slag-containing steel in the vibration sensor is not significant and the alarm is leaked, so that the inside of the package is The slag layer is too thick, which affects the purity of the water in the steel.
  • the present invention provides an apparatus for detecting and controlling slag flowing from a large package through a long nozzle to a molten steel in a medium package and detecting and controlling from the large package through the long nozzle
  • the method of flowing slag into the molten steel in the middle package is intended to provide a melting and detecting device for detecting and controlling the flow of the large package to the middle package, which is easy to install and has a long service life without being disturbed by environmental disturbances. Slag device and method.
  • An apparatus for detecting slag in molten steel includes: a sensor for acquiring one or more topographical information of a surface of a molten steel coating in a middle package and transmitting the topographical information to a signal processor; And a signal processor, configured to determine whether slag is present according to the topographical information, and send a slag warning signal in the case where it is determined that slag is present, and stop the molten steel and the slag from flowing into the middle package through the long nozzle. control signal.
  • the molten steel and the molten slag flow into the middle package from the large bag through the long nozzle, and the density of the molten slag is smaller than the density of the molten steel.
  • the sensor may be an ordinary optical imaging device or an infrared sensitive imaging device.
  • the topographical information includes at least one of the following information: height information of a partial surface of the molten steel cover layer near the long nozzle in the middle package and brightness information of a partial surface of the molten steel cover layer near the long nozzle in the middle package .
  • the signal processor is configured to emit a brightness alarm signal if the brightness information exceeds a predetermined value of the brightness.
  • the signal processor is used to issue a height alarm signal if the altitude information exceeds a predetermined height value.
  • the sensor detects the height information by measuring the change in the position of the boundary line between the long nozzle and the surface of the molten steel cover in the middle pack.
  • a method for detecting slag in molten steel includes the following steps: Step 1: Obtaining more than one topographical information of a surface of a molten steel coating in a middle package; Step 2, determining whether there is slag according to the shape information; and step 3, issuing a slag alarm signal in the case where it is determined that slag is present, and stopping the molten steel and slag from flowing into the package through the long nozzle Control signal.
  • the molten steel and the molten slag flow into the middle package from the large bag through the long nozzle, and the density of the molten slag is smaller than the density of the molten steel.
  • the topographical information includes at least one of the following information: height information of a partial surface of the molten steel cover layer near the long nozzle in the middle package and brightness information of a partial surface of the molten steel cover layer near the long nozzle in the middle package .
  • a brightness alarm signal is issued if the brightness information exceeds a predetermined value of brightness.
  • a height alarm signal is issued if the height information exceeds a predetermined height value.
  • the height information can be detected by measuring the change in the position of the boundary line between the surface of the molten steel in the long nozzle and the middle package.
  • an apparatus and method for detecting and controlling slag flowing from a large package to a middle package which is easy to install and has a long service life without being disturbed by environmental disturbances.
  • FIG. 1 is a block diagram of a slag device for detecting and controlling molten steel flowing from a large package through a long nozzle to a middle package according to an embodiment of the present invention
  • FIG. 2 is a diagram for detecting and controlling from a large bag through a long nozzle according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a specific application of a device for detecting and controlling slag flowing from a large package through a long nozzle to a molten steel in a package according to an embodiment of the present invention. Mode for carrying out the invention
  • the slag alarm signal and the control signal for driving the sliding mechanism to close the large water inlet are issued.
  • the slag flowing into the middle package of the large package is detected by using two physical quantities of height and brightness, and the sensors having long life and easy installation are detected by the sensors far away from the high temperature area,
  • the signal processor separately processes and issues an independent alarm signal based on the results of the respective processing. These two methods complement each other to increase the alarm rate. Since the specific gravity of the slag is only 1/3 of that of molten steel, the slag flowing from the large bag into the middle of the bag will float upward near the long water inlet of the large bag, so that the surface of the water-clad layer of the steel-clad steel is locally raised first.
  • the increase of the local surface height and the enhancement of the brightness of the water-clad layer of the steel-clad steel layer caused by the slag floating under the large bag can be observed by an ordinary camera device.
  • the brightness of the slag relative to the molten steel is more significant in the infrared band, and the infrared sensitive imaging device can improve the resolution of the large bag slag detecting device.
  • the water-clad layer of the slag is formed by a molten water ring around the long nozzle, which is caused by the shaking of the long nozzle.
  • ⁇ is the slag flowing in the molten steel of the large package to the middle of the package, which is floated by the buoyancy of the molten steel and breaks through the breakthrough of the water-clad layer of the molten steel, so that the molten ring raft and its vicinity rise first and then break through the partial surface of the cover layer to make the brightness Sudden increase.
  • Figure 1 is a block diagram of an apparatus for detecting and controlling slag flowing into a molten steel from a large package through a shroud in accordance with an embodiment of the present invention. As shown in FIG.
  • an apparatus for detecting and controlling slag flowing from a large package through a long nozzle into a medium-clad steel water includes: a sensor 102 for acquiring a molten steel cover layer in the middle package More than one topographical information of the surface and transmitting the topographical information to the signal processor 104; and a signal processor 104 for determining whether slag is present according to the topographical information and determining that slag is present In the case of the alarm signal and stop the molten steel and slag through the long nozzle from the big bag into the control signal.
  • the molten steel and molten slag flow into the middle package from the large bag through the long nozzle, and the density of the molten slag is smaller than the density of the molten steel.
  • the sensor 102 may be a general optical imaging device or an imaging device sensitive to infrared rays.
  • the topographical information includes at least one of the following information: height information of a partial surface of the molten steel cover layer near the long nozzle in the middle package and brightness information of a partial surface of the molten steel cover layer near the long nozzle in the middle package .
  • the signal processor 104 emits a brightness alarm signal if the brightness information exceeds a predetermined value of brightness.
  • the signal processor 104 issues a height alert signal if the altitude information exceeds a predetermined height value.
  • the sensor detects the height information by measuring the change in the position of the boundary line between the long nozzle and the surface of the molten steel cover in the middle pack.
  • FIG. 2 is a flow chart of a method for detecting and controlling slag flowing from a large package through a long nozzle into a molten steel in a package according to an embodiment of the present invention.
  • the slag for detecting and controlling the molten steel flowing from the large bag through the long nozzle into the middle package according to an embodiment of the present invention includes the following steps:
  • Step S202 acquiring more than one shape information of the surface of the molten steel cover layer in the middle package
  • Step S204 determining whether slag is present according to the topography information; and step S206, issuing an alarm signal in the case where it is determined that slag is present, and stopping the control signal that the molten steel and slag flow from the large package into the middle package through the long nozzle.
  • molten steel and molten slag flow into the middle package from the large bag through the long nozzle, and the density of the molten slag is smaller than the density of the molten steel.
  • the topographical information includes at least one of the following information: height information of a partial surface of the molten steel cover layer near the long nozzle in the middle package and brightness information of a partial surface of the molten steel cover layer near the long nozzle in the middle package .
  • step S206 a brightness alarm signal is issued if the brightness information exceeds the brightness predetermined value.
  • step S206 a height alarm signal is issued if the height information exceeds a predetermined height value.
  • step S202 the height information can be detected by measuring the change in the position of the boundary line between the long nozzle and the surface of the molten steel coating in the middle pack.
  • a device for detecting the occurrence of slag in the process of flowing molten steel in a large package through a long nozzle to a middle package including sensor and signal processing for observing the surface of the water cladding layer of the steel.
  • the sensor detects the partial surface height of the water-clad layer of the steel-clad steel near the long nozzle extending from the large package into the water in the steel
  • the signal processor separately processes the height and brightness signals and respectively issues a height alarm signal and a brightness alarm signal for marking the slag and a control signal for driving the slider mechanism to close the large package.
  • the sensor for observing the surface of the water cladding layer of the steel can be a general optical imaging device.
  • the sensor for observing the surface of the water cladding layer of the steel can also be an infrared sensitive imaging device.
  • the senor that can observe the surface of the water-clad layer of the medium-clad steel is used to measure the rise height of the local surface of the water-covered layer of the medium-clad steel by measuring the change of the position of the boundary line between the long water inlet and the water-covered layer of the medium-clad steel.
  • Fig. 3 is a schematic view showing a concrete application of a device for detecting molten slag in molten steel according to an embodiment of the present invention.
  • the molten steel 4 in the large bag 3 appears from the bottom of the large bag 3 through the long nozzle 6 to the molten steel 9 of the middle bag 7 in the process of detecting the slag.
  • the slag-containing molten steel flows into the medium-packed molten steel.
  • the molten slag will float upward by the buoyancy force, causing the local surface of the water-clad cover layer 8 near the long nozzle 6 to rise, eventually breaking through the partial surface of the cover layer 8 to enhance the surface brightness. .
  • the camera (sensor) 1 observes the surface of the molten steel cover 8 near the long nozzle 6 and the long nozzle 6 near the cover 8, and the signal processor 2 processes the observed signals of the camera 1 to give lengths respectively.
  • the increase in the local surface height and brightness of the water-clad layer in the vicinity of the nozzle 6 and the high-rise alarm signal and the brightness increase alarm signal and the control signal for driving the large-pack skateboard mechanism 5 to close the large package nozzle are issued in time.
  • the shaking of the shroud 6 causes the water-clad steel layer 8 of the tundish to form a molten ring around the shroud 6.
  • the molten ring raft becomes the breakthrough point of the slag floating up and rushing out of the water-clad steel cover layer 8, so that the ring raft and its vicinity rise first and then brighten and A large area of red slag appears near the ring.
  • the molten enthalpy and the slag and molten steel mixture floating up to the partial surface of the cover layer 8 are brighter and the long nozzle 6 is darker, and the boundary line between the long nozzle 6 and the ring ⁇ is easily distinguishable.
  • the elevation angle ⁇ 10 of the boundary line P observed by the camera 1 will increase.
  • the camera 1 observes the change in the elevation angle ⁇ 10 to determine the rising height of the partial surface of the molten steel cover layer 8, and at the same time measures the degree of localized surface enhancement of the cover layer.
  • the signal processor 2 respectively issues an alarm signal according to the degree of height increase and the degree of brightness highlighting, and a control signal for driving the large pack slide mechanism 5 to close the large water supply port.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)

Abstract

Dispositif servant à détecter et à contrôler les scories dans de l'acier en fusion et comprenant un capteur (1) et un processeur de signaux (2). Le capteur (1) sert à obtenir des informations d'image de surface de la couche supérieure (8) de l'acier en fusion et à envoyer ces informations d'image au processeur de signaux (2). Celui-ci sert à déterminer si les scories augmentent ou non en fonction des informations d'image et à envoyer un signal d'alarme de dégrossissage de scories, ainsi qu'un signal de commande afin d'arrêter l'écoulement de l'acier en fusion et des scories. L'invention concerne également un procédé servant à détecter et à contrôler les scories dans l'acier en fusion. Ce dispositif et ce procédé peuvent être mis en application de façon adéquate.
PCT/CN2009/072728 2008-06-02 2009-07-10 Dispositif et procédé servant à détecter et à contrôler les scories dans de l'acier en fusion Ceased WO2009146665A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09757099A EP2316594A1 (fr) 2008-06-02 2009-07-10 Dispositif et procédé servant à détecter et à contrôler les scories dans de l'acier en fusion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2008101085942A CN101306466B (zh) 2008-06-02 2008-06-02 检测和控制钢水中的熔渣的装置和方法
CN200810108594.2 2008-06-02

Publications (1)

Publication Number Publication Date
WO2009146665A1 true WO2009146665A1 (fr) 2009-12-10

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PCT/CN2009/072728 Ceased WO2009146665A1 (fr) 2008-06-02 2009-07-10 Dispositif et procédé servant à détecter et à contrôler les scories dans de l'acier en fusion

Country Status (3)

Country Link
EP (1) EP2316594A1 (fr)
CN (1) CN101306466B (fr)
WO (1) WO2009146665A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101306466B (zh) * 2008-06-02 2011-03-30 田志恒 检测和控制钢水中的熔渣的装置和方法
CN102343428A (zh) * 2011-11-14 2012-02-08 上海金自天正信息技术有限公司 钢水液位自动控制装置及其方法
CN105160683B (zh) * 2015-09-29 2019-01-15 田陆 一种基于人工干预的铁水扒渣检测与控制系统及其方法
KR101797312B1 (ko) * 2015-12-11 2017-11-14 주식회사 포스코 연속주조기의 종료동작 처리장치 및 종료동작 처리방법
TWI638137B (zh) * 2017-02-14 2018-10-11 日商新日鐵住金股份有限公司 熔鋼流中的熔渣檢測方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360051A (en) * 1988-11-30 1994-11-01 Nippon Steel Corporation Continuous casting method and apparatus for implementing same method
JPH0890215A (ja) * 1994-09-16 1996-04-09 Nippon Steel Corp 溶融金属流出時の溶融金属歩留り向上方法
JPH09262661A (ja) * 1996-03-28 1997-10-07 Nkk Corp 除滓装置とその運転方法
CN1507971A (zh) * 2002-12-20 2004-06-30 宝山钢铁股份有限公司 自动扒渣方法和装置
CN101306466A (zh) * 2008-06-02 2008-11-19 田志恒 检测和控制钢水中的熔渣的装置和方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5360051A (en) * 1988-11-30 1994-11-01 Nippon Steel Corporation Continuous casting method and apparatus for implementing same method
JPH0890215A (ja) * 1994-09-16 1996-04-09 Nippon Steel Corp 溶融金属流出時の溶融金属歩留り向上方法
JPH09262661A (ja) * 1996-03-28 1997-10-07 Nkk Corp 除滓装置とその運転方法
CN1507971A (zh) * 2002-12-20 2004-06-30 宝山钢铁股份有限公司 自动扒渣方法和装置
CN101306466A (zh) * 2008-06-02 2008-11-19 田志恒 检测和控制钢水中的熔渣的装置和方法

Also Published As

Publication number Publication date
EP2316594A1 (fr) 2011-05-04
CN101306466A (zh) 2008-11-19
CN101306466B (zh) 2011-03-30

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