FR2455938A2 - Automatic height control of metal in continuous casting mould - where TV camera provides image scanned by photoelectric cell to calculate height of surface of melt in mould - Google Patents

Automatic height control of metal in continuous casting mould - where TV camera provides image scanned by photoelectric cell to calculate height of surface of melt in mould

Info

Publication number
FR2455938A2
FR2455938A2 FR7912508A FR7912508A FR2455938A2 FR 2455938 A2 FR2455938 A2 FR 2455938A2 FR 7912508 A FR7912508 A FR 7912508A FR 7912508 A FR7912508 A FR 7912508A FR 2455938 A2 FR2455938 A2 FR 2455938A2
Authority
FR
France
Prior art keywords
mould
melt
cell
photoelectric cell
reciprocated
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.)
Granted
Application number
FR7912508A
Other languages
French (fr)
Other versions
FR2455938B2 (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.)
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 FR7912508A priority Critical patent/FR2455938A2/en
Publication of FR2455938A2 publication Critical patent/FR2455938A2/en
Application granted granted Critical
Publication of FR2455938B2 publication Critical patent/FR2455938B2/fr
Granted legal-status Critical Current

Links

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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Continuous Casting (AREA)

Abstract

This is an addn. to 025267, which used a row of cells to detect the point of inversion of the temp. gradient along a casting pipe, where the lower part of the pipe is immersed in the molten metal in the mould. The novelty in the present invention is that only a single detector cell (11) sensitive to radiation is used; and cell (11) is reciprocated along a straight line to scan an optical image of the surface of the melt in the mould. Cell (11) is pref. a photoelectric cell which is reciprocated while the optical image is stationary. Conversely, the image may be reciprocated while the cell (11) is stationary. A TV camera is pref. used to obtain the image. An optical image (inverted) is obtd. showing the mould (1) inside a cooling jacket (2); and molten metal flows down casting pipe (3) to form metal (7), which is covered by casting powder (8). A single photoelectric cell (11) is reciprocated between points (A,B) on line (X-X) to obtain temp. gradients (T4,T8) which meet at a line (N) representing the height of the melt in mould (1).
FR7912508A 1979-05-09 1979-05-09 Automatic height control of metal in continuous casting mould - where TV camera provides image scanned by photoelectric cell to calculate height of surface of melt in mould Granted FR2455938A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7912508A FR2455938A2 (en) 1979-05-09 1979-05-09 Automatic height control of metal in continuous casting mould - where TV camera provides image scanned by photoelectric cell to calculate height of surface of melt in mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7912508A FR2455938A2 (en) 1979-05-09 1979-05-09 Automatic height control of metal in continuous casting mould - where TV camera provides image scanned by photoelectric cell to calculate height of surface of melt in mould

Publications (2)

Publication Number Publication Date
FR2455938A2 true FR2455938A2 (en) 1980-12-05
FR2455938B2 FR2455938B2 (en) 1983-06-17

Family

ID=9225546

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912508A Granted FR2455938A2 (en) 1979-05-09 1979-05-09 Automatic height control of metal in continuous casting mould - where TV camera provides image scanned by photoelectric cell to calculate height of surface of melt in mould

Country Status (1)

Country Link
FR (1) FR2455938A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU48988A1 (en) * 1965-07-05 1967-01-05
FR2020300A1 (en) * 1968-10-10 1970-07-10 Centre Nat Rech Metall Furnace charge level measuring device
US3838727A (en) * 1973-07-16 1974-10-01 I Levi Normalized optical input level control in continuous casting process and apparatus
FR2369548A1 (en) * 1976-10-26 1978-05-26 Arbed METHOD AND INSTALLATION FOR MEASURING THE LEVEL OF LIQUID METAL IN A LINGOTIER
FR2374985A1 (en) * 1976-12-21 1978-07-21 Nippon Kokan Kk APPARATUS FOR MONITORING AND CONTROLLING THE LEVEL OF MELT METAL IN THE MOLD OF A CONTINUOUS CASTING MACHINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU48988A1 (en) * 1965-07-05 1967-01-05
FR2020300A1 (en) * 1968-10-10 1970-07-10 Centre Nat Rech Metall Furnace charge level measuring device
US3838727A (en) * 1973-07-16 1974-10-01 I Levi Normalized optical input level control in continuous casting process and apparatus
FR2369548A1 (en) * 1976-10-26 1978-05-26 Arbed METHOD AND INSTALLATION FOR MEASURING THE LEVEL OF LIQUID METAL IN A LINGOTIER
FR2374985A1 (en) * 1976-12-21 1978-07-21 Nippon Kokan Kk APPARATUS FOR MONITORING AND CONTROLLING THE LEVEL OF MELT METAL IN THE MOLD OF A CONTINUOUS CASTING MACHINE

Also Published As

Publication number Publication date
FR2455938B2 (en) 1983-06-17

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Legal Events

Date Code Title Description
TP Transmission of property
GC Lien (pledge) constituted
CN Change in juridical nature
EM Correction of a material error concerning inscription in the national patent register