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 ManufacturingInfo
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title abstract 5
- 239000010959 steel Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000002184 metal Substances 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- 238000009749 continuous casting Methods 0.000 abstract 1
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.
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 |
---|---|
ES495737A0 ES495737A0 (en) | 1981-10-01 |
ES8107401A1 true ES8107401A1 (en) | 1981-10-01 |
Family
ID=15257019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES495737A Expired ES8107401A1 (en) | 1979-10-09 | 1980-10-08 | Method and Apparatus for Detecting Level of Molten Metal in Steel Manufacturing |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5658522U (en) |
DE (1) | DE3038183C2 (en) |
ES (1) | ES8107401A1 (en) |
GB (1) | GB2061492B (en) |
IT (1) | IT1150967B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3145301C2 (en) * | 1981-11-14 | 1987-05-07 | ESB Schweißbetrieb Burbach & Bender oHG, 5900 Siegen | Method and device for determining the amount of melt in a treatment or transport 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)
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 |
-
1979
- 1979-10-09 JP JP1979139932U patent/JPS5658522U/ja active Pending
-
1980
- 1980-10-03 GB GB8032006A patent/GB2061492B/en not_active Expired
- 1980-10-08 ES ES495737A patent/ES8107401A1/en not_active Expired
- 1980-10-09 DE DE3038183A patent/DE3038183C2/en not_active Expired
- 1980-10-09 IT IT8025245A patent/IT1150967B/en active
Also Published As
Publication number | Publication date |
---|---|
IT8025245A0 (en) | 1980-10-09 |
ES495737A0 (en) | 1981-10-01 |
GB2061492B (en) | 1983-11-02 |
JPS5658522U (en) | 1981-05-20 |
DE3038183A1 (en) | 1981-04-30 |
IT1150967B (en) | 1986-12-17 |
GB2061492A (en) | 1981-05-13 |
DE3038183C2 (en) | 1984-04-26 |
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