ES8107401A1 - Method and Apparatus for Detecting Level of Molten Metal in Steel Manufacturing - Google Patents

Method and Apparatus for Detecting Level of Molten Metal in Steel Manufacturing

Info

Publication number
ES8107401A1
ES8107401A1 ES495737A ES495737A ES8107401A1 ES 8107401 A1 ES8107401 A1 ES 8107401A1 ES 495737 A ES495737 A ES 495737A ES 495737 A ES495737 A ES 495737A ES 8107401 A1 ES8107401 A1 ES 8107401A1
Authority
ES
Spain
Prior art keywords
free surface
molten steel
level
molten metal
steel manufacturing
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.)
Expired
Application number
ES495737A
Other languages
Spanish (es)
Other versions
ES495737A0 (en
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Publication of ES8107401A1 publication Critical patent/ES8107401A1/en
Publication of ES495737A0 publication Critical patent/ES495737A0/en
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
    • 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
    • B22D11/185—Controlling or regulating processes or operations for pouring responsive to molten metal level or slag level by using optical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G01F23/2921—Light, e.g. infrared or ultraviolet for discrete levels
    • G01F23/2928—Light, e.g. infrared or ultraviolet for discrete levels using light reflected on the material surface

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Continuous Casting (AREA)

Abstract

In continuous casting, the level of molten steel 2 in mould 4 is detected by taking images of the free surface 5 with video camera 6, scanning lines substantially in parallel with the free surface. The video camera produces signals corresponding to images of the free surface and to those of background. The signals are converted into binary signals wherein the molten steel is represented by one level and the background by the other. The binary signals representing the molten steel are summed to obtain a total area of the molten steel. A predetermined area corresponding to the gravitational flow into the mould is subtracted from the total area to obtain the area of the free surface proportional to the level of the free surface.
ES80495737A 1979-10-09 1980-10-08 METHOD TO DETECT THE LEVEL OF THE METAL FREE SURFACE CAST IN A MOLD Granted ES495737A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979139932U JPS5658522U (en) 1979-10-09 1979-10-09

Publications (2)

Publication Number Publication Date
ES8107401A1 true ES8107401A1 (en) 1981-10-01
ES495737A0 ES495737A0 (en) 1981-10-01

Family

ID=15257019

Family Applications (1)

Application Number Title Priority Date Filing Date
ES80495737A Granted ES495737A0 (en) 1979-10-09 1980-10-08 METHOD TO DETECT THE LEVEL OF THE METAL FREE SURFACE CAST IN A MOLD

Country Status (5)

Country Link
JP (1) JPS5658522U (en)
DE (1) DE3038183C2 (en)
ES (1) ES495737A0 (en)
GB (1) GB2061492B (en)
IT (1) IT1150967B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3145301A1 (en) * 1981-11-14 1983-05-19 ESB Schweißbetrieb Burbach & Bender oHG, 5900 Siegen Method and apparatus for determining the quantity of molten metal in a treatment or transfer vessel
US4597048A (en) * 1983-09-07 1986-06-24 United States Steel Corporation Digital flow regulation of liquid-level control for a continuous casting mold
JP2007298445A (en) * 2006-05-01 2007-11-15 Olympus Corp Liquid level detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1458181B2 (en) * 1964-12-11 1974-01-17 Pierre Lyon Poncet (Frankreich) Arrangement for the automatic adjustment of the bath level of a metal melt in a continuous casting mold
JPS51126302A (en) * 1975-04-26 1976-11-04 Sanyu Gijutsu Kenkyusho:Kk A method of controlling melt levels of iron etc. and an apparatus for it

Also Published As

Publication number Publication date
IT8025245A0 (en) 1980-10-09
DE3038183C2 (en) 1984-04-26
JPS5658522U (en) 1981-05-20
DE3038183A1 (en) 1981-04-30
GB2061492B (en) 1983-11-02
GB2061492A (en) 1981-05-13
ES495737A0 (en) 1981-10-01
IT1150967B (en) 1986-12-17

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