GB888927A - Improvements relating to apparatus for controlling the continuous casting of metals - Google Patents

Improvements relating to apparatus for controlling the continuous casting of metals

Info

Publication number
GB888927A
GB888927A GB1868558A GB1868558A GB888927A GB 888927 A GB888927 A GB 888927A GB 1868558 A GB1868558 A GB 1868558A GB 1868558 A GB1868558 A GB 1868558A GB 888927 A GB888927 A GB 888927A
Authority
GB
United Kingdom
Prior art keywords
detector
source
level
mould
control
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
GB1868558A
Inventor
William Campbell Heselwood
Derrick Shaw
Geoffrey Rowland Church
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.)
United Steel Companies Ltd
Original Assignee
United Steel Companies Ltd
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 United Steel Companies Ltd filed Critical United Steel Companies Ltd
Priority to GB1868558A priority Critical patent/GB888927A/en
Priority to BE579514A priority patent/BE579514A/en
Publication of GB888927A publication Critical patent/GB888927A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01F23/288—X-rays; Gamma rays or other forms of ionising radiation
    • 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

Landscapes

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

Abstract

888,927. Automatic level control systems. UNITED STEEL CO'S. Ltd. June 4, 1959 [June 11, 1958], No. 18685/58. Class 38 (4). [Also in Groups XXII and XL (b)] An indicator for the level of molten metal in a vertical water-cooled mould 1 during a continuous casting process comprises a source of gamma rays 19 and a gamma-ray detector 21 carried respectively by chains 11, 12 (counterbalanced by weights 24) on opposite sides of the mould and arranged to be moved together vertically under the control of a reversible motor 17. When the source and detector move past the region 34 (Fig. 4), between the full mould and the incoming stream 38 of molten metal the variation in the output signal of the detector is utilized (via a servo control circuit, Fig. 6, not shown) to stop the motor 17. If the level of region varies 34 (e.g. due to variations between the rates of pouring the metal 38 and of extracting the billet from the lower end of the mould) the servo system operates to cause the source and detector to vary in a similar manner a visible pointer moving with the source and detector indicating the position of the level. Alternatively, the signal output of the detector may be employed to produce an indication of the rate and direction of movement of the level and additionally may be utilized to control the pouring and withdrawal devices. The source 19 may comprise a radio-active cobalt 60 wire 27, Figs. 4 and 5 (or a line deposit of caesium 137 on silver) contained in a lead shield 25 slotted at 26 and covered by a steel case 28 and the detector 21 may comprise a sodium iodide crystal 30 in a lead and steel casing 29, 33 slotted at 32.
GB1868558A 1958-06-11 1958-06-11 Improvements relating to apparatus for controlling the continuous casting of metals Expired GB888927A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1868558A GB888927A (en) 1958-06-11 1958-06-11 Improvements relating to apparatus for controlling the continuous casting of metals
BE579514A BE579514A (en) 1958-06-11 1959-06-10 Improvements to devices to control the continuous casting of metals.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1868558A GB888927A (en) 1958-06-11 1958-06-11 Improvements relating to apparatus for controlling the continuous casting of metals

Publications (1)

Publication Number Publication Date
GB888927A true GB888927A (en) 1962-02-07

Family

ID=10116659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1868558A Expired GB888927A (en) 1958-06-11 1958-06-11 Improvements relating to apparatus for controlling the continuous casting of metals

Country Status (2)

Country Link
BE (1) BE579514A (en)
GB (1) GB888927A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834445A (en) * 1971-09-20 1974-09-10 Voest Ag Continuous casting mold having a breakout sensing and control device
GB2151774A (en) * 1983-12-16 1985-07-24 Atomic Energy Authority Uk Measuring displacement
GB2200206A (en) * 1986-12-19 1988-07-27 Subsea Offshore Ltd Detecting matter in hollow undersea structures
GB2212908A (en) * 1987-11-17 1989-08-02 Abnor Marketing International Fluid level detector
EP1956350A4 (en) * 2005-11-04 2009-12-30 Zhiheng Tian MELTING STEEL MEASURING INSTRUMENT WITH A LONG SZINTILLATOR

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834445A (en) * 1971-09-20 1974-09-10 Voest Ag Continuous casting mold having a breakout sensing and control device
GB2151774A (en) * 1983-12-16 1985-07-24 Atomic Energy Authority Uk Measuring displacement
GB2200206A (en) * 1986-12-19 1988-07-27 Subsea Offshore Ltd Detecting matter in hollow undersea structures
GB2200206B (en) * 1986-12-19 1991-02-13 Subsea Offshore Ltd Detection apparatus and method
GB2212908A (en) * 1987-11-17 1989-08-02 Abnor Marketing International Fluid level detector
GB2212908B (en) * 1987-11-17 1992-07-22 Abnor Marketing International Fluid level detector
EP1956350A4 (en) * 2005-11-04 2009-12-30 Zhiheng Tian MELTING STEEL MEASURING INSTRUMENT WITH A LONG SZINTILLATOR

Also Published As

Publication number Publication date
BE579514A (en) 1959-12-10

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